diff --git a/README.md b/README.md
index 8a5ca1a1ff0193df4aeeb9d59f5b38ae65869458..49a3cc36d167169467a2d65bec7527610691694d 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # Sonic Robo Blast 2
+[![latest release](https://badgen.net/github/release/STJr/SRB2/stable)](https://github.com/STJr/SRB2/releases/latest)
 
 [![Build status](https://ci.appveyor.com/api/projects/status/399d4hcw9yy7hg2y?svg=true)](https://ci.appveyor.com/project/STJr/srb2)
 [![Build status](https://travis-ci.org/STJr/SRB2.svg?branch=master)](https://travis-ci.org/STJr/SRB2)
diff --git a/appveyor.yml b/appveyor.yml
index 2acc2f71235be24cd7190e511ee5106f16bcc295..e94a709cdb6b9960ab300a620a60f25295be3d5c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 2.2.8.{branch}-{build}
+version: 2.2.9.{branch}-{build}
 os: MinGW
 
 environment:
diff --git a/dep/.gitignore b/dep/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..fb941664fc5718a31185a0cf67ccd2cfd68a2be8
--- /dev/null
+++ b/dep/.gitignore
@@ -0,0 +1,2 @@
+#All folders
+*.d
diff --git a/dep/FreeBSD/SDL/Debug/.gitignore b/dep/FreeBSD/SDL/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/FreeBSD/SDL/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/FreeBSD/SDL/Release/.gitignore b/dep/FreeBSD/SDL/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/FreeBSD/SDL/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Linux/SDL/Debug/.gitignore b/dep/Linux/SDL/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Linux/SDL/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Linux/SDL/Release/.gitignore b/dep/Linux/SDL/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Linux/SDL/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Linux64/SDL/Debug/.gitignore b/dep/Linux64/SDL/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Linux64/SDL/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Linux64/SDL/Release/.gitignore b/dep/Linux64/SDL/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Linux64/SDL/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/MasterClient/.gitignore b/dep/MasterClient/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/MasterClient/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/MasterServer/.gitignore b/dep/MasterServer/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/MasterServer/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw/Debug/.gitignore b/dep/Mingw/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw/Release/.gitignore b/dep/Mingw/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw/SDL/Debug/.gitignore b/dep/Mingw/SDL/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw/SDL/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw/SDL/Release/.gitignore b/dep/Mingw/SDL/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw/SDL/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw64/Debug/.gitignore b/dep/Mingw64/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw64/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw64/Release/.gitignore b/dep/Mingw64/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw64/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw64/SDL/Debug/.gitignore b/dep/Mingw64/SDL/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw64/SDL/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/Mingw64/SDL/Release/.gitignore b/dep/Mingw64/SDL/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/Mingw64/SDL/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/SDL/Release/.gitignore b/dep/SDL/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/SDL/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/VC/.gitignore b/dep/VC/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/VC/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/VC9/.gitignore b/dep/VC9/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/VC9/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/cygwin/Debug/.gitignore b/dep/cygwin/Debug/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/cygwin/Debug/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/cygwin/Release/.gitignore b/dep/cygwin/Release/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/cygwin/Release/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/dep/dummy/.gitignore b/dep/dummy/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42c6dc2c662642792a8860e166dfd81126695e8f
--- /dev/null
+++ b/dep/dummy/.gitignore
@@ -0,0 +1,2 @@
+# DON'T REMOVE
+# This keeps the folder from disappearing
diff --git a/extras/conf/SRB2-22.cfg b/extras/conf/SRB2-22.cfg
index a0d40cdf0003dcc9f8ed81b0812825a625f6048a..5a464eb5dc008cfa9c8ddfa490df5f196914f30c 100644
--- a/extras/conf/SRB2-22.cfg
+++ b/extras/conf/SRB2-22.cfg
@@ -640,6 +640,39 @@ linedeftypes
 			prefix = "(63)";
 		}
 
+		96
+		{
+			title = "Apply Tag to Tagged Sectors";
+			prefix = "(96)";
+			flags1024text = "[10] Offsets are target tags";
+			flags8192text = "[13] Use front side offsets";
+			flags32768text = "[15] Use back side offsets";
+		}
+
+		97
+		{
+			title = "Apply Tag to Front Sector";
+			prefix = "(97)";
+			flags8192text = "[13] Use front side offsets";
+			flags32768text = "[15] Use back side offsets";
+		}
+
+		98
+		{
+			title = "Apply Tag to Back Sector";
+			prefix = "(98)";
+			flags8192text = "[13] Use front side offsets";
+			flags32768text = "[15] Use back side offsets";
+		}
+
+		99
+		{
+			title = "Apply Tag to Front and Back Sectors";
+			prefix = "(99)";
+			flags8192text = "[13] Use front side offsets";
+			flags32768text = "[15] Use back side offsets";
+		}
+
 		540
 		{
 			title = "Floor Friction";
@@ -746,13 +779,13 @@ linedeftypes
 
 		20
 		{
-			title = "First Line";
+			title = "PolyObject First Line";
 			prefix = "(20)";
 		}
 
 		22
 		{
-			title = "Parameters";
+			title = "PolyObject Parameters";
 			prefix = "(22)";
 			flags8text = "[3] Set translucency by X offset";
 			flags32text = "[5] Render outer sides only";
@@ -765,19 +798,19 @@ linedeftypes
 
 		30
 		{
-			title = "Waving Flag";
+			title = "PolyObject Waving Flag";
 			prefix = "(30)";
 		}
 
 		31
 		{
-			title = "Displacement by Front Sector";
+			title = "Move PolyObject by Front Sector Displacement";
 			prefix = "(31)";
 		}
 
 		32
 		{
-			title = "Angular Displacement by Front Sector";
+			title = "Rotate PolyObject by Front Sector Displacement";
 			prefix = "(32)";
 			flags64text = "[6] Don't turn players";
 			flags512text = "[9] Turn all objects";
@@ -2498,35 +2531,35 @@ linedeftypes
 
 		480
 		{
-			title = "Door Slide";
+			title = "PolyObject Door Slide";
 			prefix = "(480)";
 			flags8text = "[3] Set delay by backside sector";
 		}
 
 		481
 		{
-			title = "Door Swing";
+			title = "PolyObject Door Swing";
 			prefix = "(481)";
 			flags8text = "[3] Set delay by backside sector";
 		}
 
 		482
 		{
-			title = "Move";
+			title = "Move PolyObject";
 			prefix = "(482)";
 			flags8text = "[3] Set delay by backside sector";
 		}
 
 		483
 		{
-			title = "Move, Override";
+			title = "Move PolyObject, Override";
 			prefix = "(483)";
 			flags8text = "[3] Set delay by backside sector";
 		}
 
 		484
 		{
-			title = "Rotate Right";
+			title = "Rotate PolyObject Right";
 			prefix = "(484)";
 			flags8text = "[3] Set delay by backside sector";
 			flags64text = "[6] Don't turn players";
@@ -2535,7 +2568,7 @@ linedeftypes
 
 		485
 		{
-			title = "Rotate Right, Override";
+			title = "Rotate PolyObject Right, Override";
 			prefix = "(485)";
 			flags8text = "[3] Set delay by backside sector";
 			flags64text = "[6] Don't turn players";
@@ -2544,7 +2577,7 @@ linedeftypes
 
 		486
 		{
-			title = "Rotate Left";
+			title = "Rotate PolyObject Left";
 			prefix = "(486)";
 			flags8text = "[3] Set delay by backside sector";
 			flags64text = "[6] Don't turn players";
@@ -2553,7 +2586,7 @@ linedeftypes
 
 		487
 		{
-			title = "Rotate Left, Override";
+			title = "Rotate PolyObject Left, Override";
 			prefix = "(487)";
 			flags8text = "[3] Set delay by backside sector";
 			flags64text = "[6] Don't turn players";
@@ -2562,7 +2595,7 @@ linedeftypes
 
 		488
 		{
-			title = "Move by Waypoints";
+			title = "Move PolyObject by Waypoints";
 			prefix = "(488)";
 			flags8text = "[3] Set delay by backside sector";
 			flags32text = "[5] Reverse order";
@@ -2573,7 +2606,7 @@ linedeftypes
 
 		489
 		{
-			title = "Turn Invisible, Intangible";
+			title = "Turn PolyObject Invisible, Intangible";
 			prefix = "(489)";
 			flags8text = "[3] Set delay by backside sector";
 			flags64text = "[6] Only invisible";
@@ -2581,7 +2614,7 @@ linedeftypes
 
 		490
 		{
-			title = "Turn Visible, Tangible";
+			title = "Turn PolyObject Visible, Tangible";
 			prefix = "(490)";
 			flags8text = "[3] Set delay by backside sector";
 			flags64text = "[6] Only visible";
@@ -2589,7 +2622,7 @@ linedeftypes
 
 		491
 		{
-			title = "Set Translucency";
+			title = "Set PolyObject Translucency";
 			prefix = "(491)";
 			flags8text = "[3] Set delay by backside sector";
 			flags16text = "[4] Set raw alpha by Front X";
@@ -2598,7 +2631,7 @@ linedeftypes
 
 		492
 		{
-			title = "Fade Translucency";
+			title = "Fade PolyObject Translucency";
 			prefix = "(492)";
 			flags8text = "[3] Set delay by backside sector";
 			flags16text = "[4] Set raw alpha by Front X";
@@ -3059,6 +3092,78 @@ linedeftypes
 			slopeargs = 3;
 		}
 
+		723
+		{
+			title = "Copy Backside Floor Slope from Line Tag";
+			prefix = "(720)";
+			slope = "copy";
+			slopeargs = 4;
+		}
+
+		724
+		{
+			title = "Copy Backside Ceiling Slope from Line Tag";
+			prefix = "(721)";
+			slope = "copy";
+			slopeargs = 8;
+		}
+
+		725
+		{
+			title = "Copy Backside Floor and Ceiling Slope from Line Tag";
+			prefix = "(722)";
+			slope = "copy";
+			slopeargs = 12;
+		}
+
+		730
+		{
+			title = "Copy Frontside Floor Slope to Backside";
+			prefix = "(730)";
+			slope = "copy";
+			copyslopeargs = 1;
+		}
+
+		731
+		{
+			title = "Copy Frontside Ceiling Slope to Backside";
+			prefix = "(731)";
+			slope = "copy";
+			copyslopeargs = 4;
+		}
+
+		732
+		{
+			title = "Copy Frontside Floor and Ceiling Slope to Backside";
+			prefix = "(732)";
+			slope = "copy";
+			copyslopeargs = 5;
+		}
+
+		733
+		{
+			title = "Copy Backside Floor Slope to Frontside";
+			prefix = "(733)";
+			slope = "copy";
+			copyslopeargs = 2;
+		}
+
+		734
+		{
+			title = "Copy Backside Ceiling Slope to Frontside";
+			prefix = "(734)";
+			slope = "copy";
+			copyslopeargs = 8;
+		}
+
+		735
+		{
+			title = "Copy Backside Floor and Ceiling Slope to Frontside";
+			prefix = "(735)";
+			slope = "copy";
+			copyslopeargs = 10;
+		}
+
 		799
 		{
 			title = "Set Tagged Dynamic Slope Vertex to Front Sector Height";
@@ -3393,6 +3498,7 @@ thingtypes
 			width = 8;
 			height = 28;
 			angletext = "Jump strength";
+			fixedrotation = 1;
 		}
 		103
 		{
@@ -3431,6 +3537,7 @@ thingtypes
 			width = 12;
 			height = 64;
 			angletext = "Firing delay";
+			fixedrotation = 1;
 		}
 		122
 		{
@@ -3547,9 +3654,10 @@ thingtypes
 		{
 			title = "Pterabyte Spawner";
 			sprite = "PTERA2A8";
-			width = 16;
-			height = 16;
-			parametertext = "No. Pterabytes";
+			width = 24;
+			height = 48;
+			parametertext = "Spawns +1";
+			arrow = 0;
 		}
 		136
 		{
@@ -3771,6 +3879,7 @@ thingtypes
 			height = 16;
 			sprite = "internal:capsule";
 			angletext = "Tag";
+			fixedrotation = 1;
 		}
 		292
 		{
@@ -3781,11 +3890,13 @@ thingtypes
 			flags8text = "[8] Sea Egg shooting point";
 			sprite = "internal:eggmanway";
 			angletext = "No. (Sea Egg)";
+			fixedrotation = 1;
 			flagsvaluetext = "No. (Brak)";
 			parametertext = "Next";
 		}
 		293
 		{
+			arrow = 0;
 			title = "Metal Sonic Gather Point";
 			sprite = "internal:metal";
 			width = 8;
@@ -3793,6 +3904,7 @@ thingtypes
 		}
 		294
 		{
+			arrow = 0;
 			title = "Fang Waypoint";
 			flags8text = "[8] Center waypoint";
 			sprite = "internal:eggmanway";
@@ -3820,79 +3932,79 @@ thingtypes
 		301
 		{
 			title = "Bounce Ring";
-			sprite = "internal:RNGBA0";
+			sprite = "RNGBA0";
 		}
 		302
 		{
 			title = "Rail Ring";
-			sprite = "internal:RNGRA0";
+			sprite = "RNGRA0";
 		}
 		303
 		{
 			title = "Infinity Ring";
-			sprite = "internal:RNGIA0";
+			sprite = "RNGIA0";
 		}
 		304
 		{
 			title = "Automatic Ring";
-			sprite = "internal:RNGAA0";
+			sprite = "RNGAA0";
 		}
 		305
 		{
 			title = "Explosion Ring";
-			sprite = "internal:RNGEA0";
+			sprite = "RNGEA0";
 		}
 		306
 		{
 			title = "Scatter Ring";
-			sprite = "internal:RNGSA0";
+			sprite = "RNGSA0";
 		}
 		307
 		{
 			title = "Grenade Ring";
-			sprite = "internal:RNGGA0";
+			sprite = "RNGGA0";
 		}
 		308
 		{
 			title = "CTF Team Ring (Red)";
-			sprite = "internal:RRNGA0";
+			sprite = "internal:TRNGA0r";
 			width = 16;
 		}
 		309
 		{
 			title = "CTF Team Ring (Blue)";
-			sprite = "internal:BRNGA0";
+			sprite = "internal:TRNGA0b";
 			width = 16;
 		}
 		330
 		{
 			title = "Bounce Ring Panel";
-			sprite = "internal:PIKBA0";
+			sprite = "PIKBA0";
 		}
 		331
 		{
 			title = "Rail Ring Panel";
-			sprite = "internal:PIKRA0";
+			sprite = "PIKRA0";
 		}
 		332
 		{
 			title = "Automatic Ring Panel";
-			sprite = "internal:PIKAA0";
+			sprite = "PIKAA0";
 		}
 		333
 		{
 			title = "Explosion Ring Panel";
-			sprite = "internal:PIKEA0";
+			sprite = "PIKEA0";
 		}
 		334
 		{
 			title = "Scatter Ring Panel";
-			sprite = "internal:PIKSA0";
+			sprite = "PIKSA0";
 		}
 		335
 		{
 			title = "Grenade Ring Panel";
-			sprite = "internal:PIKGA0";
+			sprite = "PIKGA0";
 		}
 	}
 
@@ -3986,6 +4098,7 @@ thingtypes
 			flags8height = 24;
 			flags8text = "[8] Float";
 			angletext = "Tag";
+			fixedrotation = 1;
 		}
 	}
 
@@ -4000,6 +4113,7 @@ thingtypes
 		flags4text = "[4] Random (Strong)";
 		flags8text = "[8] Random (Weak)";
 		angletext = "Tag";
+		fixedrotation = 1;
 
 		400
 		{
@@ -4131,6 +4245,7 @@ thingtypes
 		height = 44;
 		flags1text = "[1] Run linedef executor on pop";
 		angletext = "Tag";
+		fixedrotation = 1;
 
 		431
 		{
@@ -4228,6 +4343,7 @@ thingtypes
 			height = 128;
 			flags4text = "[4] Respawn at center";
 			angletext = "Angle/Order";
+			fixedrotation = 1;
 			parametertext = "Order";
 		}
 		520
@@ -4259,7 +4375,7 @@ thingtypes
 			flags1text = "[1] Start retracted";
 			flags4text = "[4] Retractable";
 			flags8text = "[8] Intangible";
-			parametertext = "Initial delay";
+			parametertext = "Start delay";
 		}
 		523
 		{
@@ -4271,7 +4387,8 @@ thingtypes
 			flags4text = "[4] Retractable";
 			flags8text = "[8] Intangible";
 			angletext = "Retraction interval";
-			parametertext = "Initial delay";
+			fixedrotation = 1;
+			parametertext = "Start delay";
 		}
 		1130
 		{
@@ -4320,6 +4437,7 @@ thingtypes
 			flags4text = "[4] Invisible";
 			flags8text = "[8] No distance check";
 			angletext = "Lift height";
+			fixedrotation = 1;
 		}
 		541
 		{
@@ -4335,6 +4453,7 @@ thingtypes
 			width = 32;
 			height = 64;
 			angletext = "Strength";
+			fixedrotation = 1;
 		}
 		543
 		{
@@ -4344,6 +4463,7 @@ thingtypes
 			height = 64;
 			flags8text = "[8] Respawn";
 			angletext = "Color";
+			fixedrotation = 1;
 		}
 		550
 		{
@@ -4617,6 +4737,9 @@ thingtypes
 			title = "Slope Vertex";
 			sprite = "internal:vertexslope";
 			angletext = "Tag";
+			fixedrotation = 1;
+			parametertext = "Absolute?";
+			flagsvaluetext = "Absolute Z";
 		}
 
 		751
@@ -4638,6 +4761,7 @@ thingtypes
 			title = "Zoom Tube Waypoint";
 			sprite = "internal:zoom";
 			angletext = "Order";
+			fixedrotation = 1;
 		}
 
 		754
@@ -4647,6 +4771,7 @@ thingtypes
 			flags8text = "[8] Push using XYZ";
 			sprite = "GWLGA0";
 			angletext = "Radius";
+			fixedrotation = 1;
 		}
 		755
 		{
@@ -4655,6 +4780,7 @@ thingtypes
 			flags8text = "[8] Pull using XYZ";
 			sprite = "GWLRA0";
 			angletext = "Radius";
+			fixedrotation = 1;
 		}
 		756
 		{
@@ -4663,6 +4789,7 @@ thingtypes
 			width = 32;
 			height = 16;
 			angletext = "Tag";
+			fixedrotation = 1;
 		}
 		757
 		{
@@ -4671,6 +4798,7 @@ thingtypes
 			width = 8;
 			height = 16;
 			angletext = "Tag";
+			fixedrotation = 1;
 		}
 		758
 		{
@@ -4681,21 +4809,24 @@ thingtypes
 		{
 			title = "PolyObject Anchor";
 			sprite = "internal:polyanchor";
-			angletext = "ID";
+			angletext = "Tag";
+			fixedrotation = 1;
 		}
 
 		761
 		{
 			title = "PolyObject Spawn Point";
 			sprite = "internal:polycenter";
-			angletext = "ID";
+			angletext = "Tag";
+			fixedrotation = 1;
 		}
 
 		762
 		{
 			title = "PolyObject Spawn Point (Crush)";
 			sprite = "internal:polycentercrush";
-			angletext = "ID";
+			angletext = "Tag";
+			fixedrotation = 1;
 		}
 		780
 		{
@@ -4703,6 +4834,7 @@ thingtypes
 			sprite = "internal:skyb";
 			flags4text = "[4] In-map centerpoint";
 			parametertext = "ID";
+			fixedrotation = 1;
 		}
 	}
 
@@ -4897,6 +5029,7 @@ thingtypes
 			height = 16;
 			hangs = 1;
 			angletext = "Dripping interval";
+			fixedrotation = 1;
 		}
 		1003
 		{
@@ -4953,7 +5086,7 @@ thingtypes
 		1011
 		{
 			title = "Stalagmite (DSZ2)";
-			sprite = "DSTGA0";
+			sprite = "DSTGB0";
 			width = 8;
 			height = 116;
 			flags4text = "[4] Double size";
@@ -5038,6 +5171,8 @@ thingtypes
 			flags4text = "[4] No sounds";
 			flags8text = "[8] Double size";
 			angletext = "Tag";
+			parametertext = "Spokes";
+			fixedrotation = 1;
 		}
 		1105
 		{
@@ -5048,6 +5183,8 @@ thingtypes
 			flags4text = "[4] No sounds";
 			flags8text = "[8] Double size";
 			angletext = "Tag";
+			parametertext = "Spokes";
+			fixedrotation = 1;
 		}
 		1106
 		{
@@ -5058,6 +5195,8 @@ thingtypes
 			flags4text = "[4] No sounds";
 			flags8text = "[8] Red spring";
 			angletext = "Tag";
+			parametertext = "Spokes";
+			fixedrotation = 1;
 		}
 		1107
 		{
@@ -5067,6 +5206,8 @@ thingtypes
 			height = 34;
 			flags8text = "[8] Double size";
 			angletext = "Tag";
+			parametertext = "Spokes";
+			fixedrotation = 1;
 		}
 		1108
 		{
@@ -5086,6 +5227,8 @@ thingtypes
 			flags4text = "[4] No sounds";
 			flags8text = "[8] Double size";
 			angletext = "Tag";
+			parametertext = "Spokes";
+			fixedrotation = 1;
 		}
 		1110
 		{
@@ -5095,6 +5238,8 @@ thingtypes
 			height = 34;
 			flags4text = "[4] No sounds";
 			angletext = "Tag";
+			parametertext = "Spokes";
+			fixedrotation = 1;
 		}
 		1111
 		{
@@ -5224,6 +5369,7 @@ thingtypes
 			sprite = "EGR1A1";
 			width = 20;
 			height = 72;
+			arrow = 1;
 		}
 		1128
 		{
@@ -5272,6 +5418,7 @@ thingtypes
 			width = 8;
 			height = 16;
 			angletext = "Tag";
+			fixedrotation = 1;
 		}
 		1203
 		{
@@ -5342,6 +5489,7 @@ thingtypes
 			sprite = "WWSGAR";
 			width = 22;
 			height = 64;
+			arrow = 1;
 		}
 		1213
 		{
@@ -5349,6 +5497,7 @@ thingtypes
 			sprite = "WWS2AR";
 			width = 22;
 			height = 64;
+			arrow = 1;
 		}
 		1214
 		{
@@ -5356,6 +5505,7 @@ thingtypes
 			sprite = "WWS3ALAR";
 			width = 16;
 			height = 192;
+			arrow = 1;
 		}
 		1215
 		{
@@ -5371,6 +5521,7 @@ thingtypes
 			sprite = "BARRA1";
 			width = 24;
 			height = 63;
+			arrow = 1;
 		}
 		1217
 		{
@@ -5392,6 +5543,7 @@ thingtypes
 			sprite = "MCRTCLFR";
 			width = 22;
 			height = 32;
+			arrow = 1;
 		}
 		1220
 		{
@@ -5399,6 +5551,7 @@ thingtypes
 			sprite = "MCRTIR";
 			width = 32;
 			height = 32;
+			arrow = 1;
 		}
 		1221
 		{
@@ -5406,6 +5559,7 @@ thingtypes
 			sprite = "SALDARAL";
 			width = 96;
 			height = 160;
+			arrow = 1;
 			flags8text = "[8] Allow non-minecart players";
 		}
 		1222
@@ -5467,6 +5621,7 @@ thingtypes
 			height = 40;
 			flags8text = "[8] Waves vertically";
 			angletext = "On/Off time";
+			fixedrotation = 1;
 			parametertext = "Strength";
 		}
 		1301
@@ -5477,6 +5632,7 @@ thingtypes
 			height = 40;
 			flags8text = "[8] Shoot downwards";
 			angletext = "On/Off time";
+			fixedrotation = 1;
 			parametertext = "Strength";
 		}
 		1302
@@ -5500,6 +5656,7 @@ thingtypes
 			width = 30;
 			height = 32;
 			angletext = "Initial delay";
+			fixedrotation = 1;
 			flags8text = "[8] Double size";
 		}
 		1305
@@ -5537,6 +5694,7 @@ thingtypes
 			sprite = "WVINALAR";
 			width = 1;
 			height = 288;
+			arrow = 1;
 		}
 		1310
 		{
@@ -5544,6 +5702,7 @@ thingtypes
 			sprite = "WVINBLBR";
 			width = 1;
 			height = 288;
+			arrow = 1;
 		}
 	}
 
@@ -5901,6 +6060,7 @@ thingtypes
 		width = 8;
 		height = 4096;
 		sprite = "UNKNA0";
+		fixedrotation = 1;
 
 		1700
 		{
@@ -5959,6 +6119,7 @@ thingtypes
 			flags4text = "[4] Align player to top";
 			flags8text = "[8] Die upon time up";
 			angletext = "Time limit";
+			fixedrotation = 1;
 			parametertext = "Height";
 		}
 		1704
@@ -5971,6 +6132,7 @@ thingtypes
 			unflippable = true;
 			flagsvaluetext = "Pitch";
 			angletext = "Yaw";
+			fixedrotation = 1;
 		}
 		1705
 		{
@@ -5983,6 +6145,7 @@ thingtypes
 			centerHitbox = true;
 			flagsvaluetext = "Height";
 			angletext = "Pitch/Yaw";
+			fixedrotation = 1;
 		}
 		1706
 		{
@@ -6104,6 +6267,7 @@ thingtypes
 			width = 8;
 			height = 16;
 			angletext = "Jump strength";
+			fixedrotation = 1;
 		}
 		1806
 		{
@@ -6336,6 +6500,7 @@ thingtypes
 			width = 18;
 			height = 28;
 			angletext = "Initial delay";
+			fixedrotation = 1;
 		}
 		2001
 		{
@@ -6459,6 +6624,7 @@ thingtypes
 			sprite = "XMS6A0";
 			width = 52;
 			height = 106;
+			hangs = 1;
 		}
 	}
 
@@ -6472,6 +6638,7 @@ thingtypes
 		flags4text = "[4] No movement";
 		flags8text = "[8] Hop";
 		angletext = "Radius";
+		fixedrotation = 1;
 
 		2200
 		{
diff --git a/extras/conf/udb/Includes/SRB222_things.cfg b/extras/conf/udb/Includes/SRB222_things.cfg
index 0ea452155181cfd080a65a0713afd8e966531196..113c1a4c26eb08a7109da2afeba747dfb1cdda14 100644
--- a/extras/conf/udb/Includes/SRB222_things.cfg
+++ b/extras/conf/udb/Includes/SRB222_things.cfg
@@ -1247,6 +1247,7 @@ patterns
 		sprite = "SPHRA0";
 		width = 96;
 		height = 192;
+	}
 	609
 	{
 		title = "Circle of Rings and Spheres (Big)";
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 87a0499b6d088b5bb51cf36658de9238397b3402..33898c9a170c87a24fa468f282056f81d4b44e7c 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -32,6 +32,7 @@ set(SRB2_CORE_SOURCES
 	m_bbox.c
 	m_cheat.c
 	m_cond.c
+	m_easing.c
 	m_fixed.c
 	m_menu.c
 	m_misc.c
@@ -93,6 +94,7 @@ set(SRB2_CORE_HEADERS
 	i_video.h
 	info.h
 	keys.h
+	libdivide.h
 	lzf.h
 	m_aatree.h
 	m_anigif.h
@@ -101,6 +103,7 @@ set(SRB2_CORE_HEADERS
 	m_cheat.h
 	m_cond.h
 	m_dllist.h
+	m_easing.h
 	m_fixed.h
 	m_menu.h
 	m_misc.h
@@ -604,6 +607,8 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
 	set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} -Wno-absolute-value)
 endif()
 
+set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} -Wno-trigraphs)
+
 add_definitions(-DCMAKECONFIG)
 
 #add_library(SRB2Core STATIC
diff --git a/src/Makefile b/src/Makefile
index 1314161bd8b5f573732459c1f1cd080c3a35b7b3..1d3551ce2422238794aca67334a8d0138a195e82 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2,7 +2,7 @@
 #     GNU Make makefile for SRB2
 #############################################################################
 # Copyright (C) 1998-2000 by DooM Legacy Team.
-# Copyright (C) 2003-2020 by Sonic Team Junior.
+# Copyright (C) 2003-2021 by Sonic Team Junior.
 #
 # This program is free software distributed under the
 # terms of the GNU General Public License, version 2.
@@ -24,7 +24,9 @@
 #     clean
 #       Remove all object files
 #     cleandep
-#       Remove depend.dep
+#       Remove dependency files
+#     distclean
+#       Remove autogenerated files
 #     dll
 #       compile primary HW render DLL/SO
 #     all_dll
@@ -79,13 +81,23 @@
 #
 #############################################################################
 
+,=,
+
+ifeq (,$(filter-out cleandep clean distclean,$(or $(MAKECMDGOALS),all)))
+CLEANONLY=1
+else ifndef SILENT
+echo=@echo "$(1)"
+ifndef MAKE_RESTARTS
+print=$(info $(1))
+endif
+endif
+
 ALL_SYSTEMS=\
 	PANDORA\
 	LINUX64\
 	MINGW64\
 	HAIKU\
 	DUMMY\
-	DJGPPDOS\
 	MINGW\
 	UNIX\
 	LINUX\
@@ -98,7 +110,7 @@ ALL_SYSTEMS=\
 ifeq (,$(filter $(ALL_SYSTEMS),$(.VARIABLES)))
 ifeq ($(OS),Windows_NT) # all windows are Windows_NT...
 
- $(info Detected a Windows system, compiling for 32-bit MinGW SDL2...)
+ $(call print,Detected a Windows system$(,) compiling for 32-bit MinGW SDL2...)
 
  # go for a 32-bit sdl mingw exe by default
  MINGW=1
@@ -123,7 +135,7 @@ else # if you on the *nix
  new_system:=$(new_system)64
  endif
 
- $(info Detected $(system) ($(new_system))...)
+ $(call print,Detected $(system) ($(new_system))...)
  $(new_system)=1
 
 endif
@@ -237,6 +249,12 @@ endif
 
 MSGFMT?=msgfmt
 
+ifdef WINDOWSHELL
+	COMPTIME=-..\comptime.bat
+else
+	COMPTIME=-../comptime.sh
+endif
+
 ifndef ECHO
 	NASM:=@$(NASM)
 	REMOVE:=@$(REMOVE)
@@ -251,6 +269,7 @@ ifndef ECHO
 	MSGFMT:=@$(MSGFMT)
 	UPX:=@$(UPX)
 	UPX_OPTS+=-q
+	COMPTIME:=@$(COMPTIME)
 endif
 
 ifdef NONET
@@ -415,7 +434,7 @@ ifdef GCC48
 else
 	CFLAGS+=-O0
 endif
-	CFLAGS+= -Wall -DPARANOIA -DRANGECHECK -DPACKETDROP -DMOBJCONSISTANCY
+	CFLAGS+= -Wall -DPARANOIA -DRANGECHECK -DPACKETDROP
 else
 
 
@@ -455,7 +474,6 @@ DBGNAME?=$(EXENAME).debug
 
 # not too sophisticated dependency
 OBJS:=$(i_main_o) \
-		$(OBJDIR)/comptime.o \
 		$(OBJDIR)/string.o   \
 		$(OBJDIR)/d_main.o   \
 		$(OBJDIR)/d_clisrv.o \
@@ -484,6 +502,7 @@ OBJS:=$(i_main_o) \
 		$(OBJDIR)/m_bbox.o   \
 		$(OBJDIR)/m_cheat.o  \
 		$(OBJDIR)/m_cond.o   \
+		$(OBJDIR)/m_easing.o \
 		$(OBJDIR)/m_fixed.o  \
 		$(OBJDIR)/m_menu.o   \
 		$(OBJDIR)/m_misc.o   \
@@ -542,7 +561,10 @@ OBJS:=$(i_main_o) \
 		$(i_sound_o)    \
 		$(OBJS)
 
+DEPS:=$(patsubst $(OBJDIR)/%.o,$(DEPDIR)/%.d,$(filter %.o,$(OBJS)))
+OBJS+=$(OBJDIR)/comptime.o
 
+ifndef SILENT
 ifndef ECHO
 ifndef NOECHOFILENAMES
 define echoName =
@@ -550,6 +572,7 @@ define echoName =
 endef
 endif
 endif
+endif
 
 # List of languages to compile.
 # For reference, this is the command I use to build a srb2.pot file from the source code.
@@ -562,12 +585,12 @@ OPTS+=-DGETTEXT
 endif
 
 ifdef PANDORA
-all:	pre-build $(BIN)/$(PNDNAME)
+all: $(BIN)/$(PNDNAME)
 endif
 
 
 ifdef SDL
-all:	 pre-build $(BIN)/$(EXENAME)
+all: $(BIN)/$(EXENAME)
 endif
 
 ifdef DUMMY
@@ -575,20 +598,15 @@ all:	$(BIN)/$(EXENAME)
 endif
 
 cleandep:
-	$(REMOVE) $(OBJDIR)/depend.dep
+	$(REMOVE) $(DEPS)
 	$(REMOVE) comptime.h
 
-pre-build:
-ifdef WINDOWSHELL
-	-..\comptime.bat .
-else
-	-@../comptime.sh .
-endif
-
 clean:
 	$(REMOVE) *~ *.flc
 	$(REMOVE) $(OBJDIR)/*.o
 
+distclean: clean cleandep
+
 ifdef MINGW
 	$(REMOVE) $(OBJDIR)/*.res
 endif
@@ -604,15 +622,13 @@ asm:
 	$(REMOVE) $(OBJDIR)/tmp.exe
 
 # executable
-# NOTE: DJGPP's objcopy do not have --add-gnu-debuglink
-
 $(BIN)/$(EXENAME): $(POS) $(OBJS)
 	-$(MKDIR) $(BIN)
-	@echo Linking $(EXENAME)...
+	$(call echo,Linking $(EXENAME)...)
 	$(LD) $(LDFLAGS) $(OBJS) -o $(BIN)/$(EXENAME) $(LIBS)
 ifndef VALGRIND
 ifndef NOOBJDUMP
-	@echo Dumping debugging info
+	$(call echo,Dumping debugging info)
 	$(OBJDUMP) $(OBJDUMP_OPTS) $(BIN)/$(EXENAME) > $(BIN)/$(DBGNAME).txt
 ifdef WINDOWSHELL
 	-$(GZIP) $(GZIP_OPTS) $(BIN)/$(DBGNAME).txt
@@ -631,10 +647,10 @@ ifndef NOUPX
 	-$(UPX) $(UPX_OPTS) $(BIN)/$(EXENAME)
 endif
 endif
-	@echo Build is done, please look for $(EXENAME) in $(BIN), \(checking for post steps\)
+	$(call echo,Build is done$(,) please look for $(EXENAME) in $(BIN)$(,) (checking for post steps))
 
 reobjdump:
-	@echo Redumping debugging info
+	$(call echo,Redumping debugging info)
 	$(OBJDUMP) $(OBJDUMP_OPTS) $(BIN)/$(DBGNAME) > $(BIN)/$(DBGNAME).txt
 ifdef WINDOWSHELL
 	-$(GZIP) $(GZIP_OPTS) $(BIN)/$(DBGNAME).txt
@@ -670,24 +686,40 @@ endif
 endif
 
 #dependecy made by gcc itself !
-$(OBJS):
 ifndef DUMMY
--include $(OBJDIR)/depend.dep
+ifndef CLEANONLY
+$(call print,Checking dependency files...)
+-include $(DEPS)
+endif
 endif
 
-$(OBJDIR)/depend.dep:
-	@echo "Creating dependency file, depend.dep"
-	@echo > comptime.h
-	-$(MKDIR) $(OBJDIR)
-	$(CC) $(CFLAGS) -MM *.c > $(OBJDIR)/depend.ped
-	$(CC) $(CFLAGS) -MM $(INTERFACE)/*.c >> $(OBJDIR)/depend.ped
-ifndef NOHW
-	$(CC) $(CFLAGS) -MM hardware/*.c >> $(OBJDIR)/depend.ped
+undefine deps_rule
+
+# windows makes it too hard !
+ifndef WINDOWSHELL
+ifdef echoName
+define deps_rule =
+	@printf "%-20.20s\r" $<
+
+endef
+endif
 endif
-	$(CC) $(CFLAGS) -MM blua/*.c >> $(OBJDIR)/depend.ped
-	@sed -e 's,\(.*\)\.o: ,$(subst /,\/,$(OBJDIR))\/&,g' < $(OBJDIR)/depend.ped > $(OBJDIR)/depend.dep
-	$(REMOVE) $(OBJDIR)/depend.ped
-	@echo "Created dependency file, depend.dep"
+
+define deps_rule +=
+	$(CC) $(CFLAGS) -M -MF $@ -MT $(OBJDIR)/$(<:.c=.o) $<
+endef
+
+$(DEPDIR)/%.d: %.c
+	$(deps_rule)
+
+$(DEPDIR)/%.d: $(INTERFACE)/%.c
+	$(deps_rule)
+
+$(DEPDIR)/%.d: hardware/%.c
+	$(deps_rule)
+
+$(DEPDIR)/%.d: blua/%.c
+	$(deps_rule)
 
 ifdef VALGRIND
 $(OBJDIR)/z_zone.o: z_zone.c
@@ -695,9 +727,12 @@ $(OBJDIR)/z_zone.o: z_zone.c
 	$(CC) $(CFLAGS) $(WFLAGS) -DHAVE_VALGRIND $(VALGRIND_CFLAGS) -c $< -o $@
 endif
 
-$(OBJDIR)/comptime.o: comptime.c pre-build
-	$(echoName)
-	$(CC) $(CFLAGS) $(WFLAGS) -c $< -o $@
+$(OBJDIR)/comptime.o::
+ifdef echoName
+	@echo -- comptime.c ...
+endif
+	$(COMPTIME) .
+	$(CC) $(CFLAGS) $(WFLAGS) -c comptime.c -o $@
 
 $(BIN)/%.mo: locale/%.po
 	-$(MKDIR) $(BIN)
diff --git a/src/Makefile.cfg b/src/Makefile.cfg
index f081eacdfaaf795bec1d2635a71afdd920630f00..90dce0073beb806165cf1bd2064170ab7fa36b51 100644
--- a/src/Makefile.cfg
+++ b/src/Makefile.cfg
@@ -47,7 +47,8 @@ ifdef MACOSX
 endif
 
 # Automatically set version flag, but not if one was manually set
-ifeq   (,$(filter GCC%,$(.VARIABLES)))
+# And don't bother if this is a clean only run
+ifeq   (,$(filter GCC% CLEANONLY,$(.VARIABLES)))
  version:=$(shell $(CC) --version)
  # check if this is in fact GCC
  ifneq (,$(or $(findstring gcc,$(version)),$(findstring GCC,$(version))))
@@ -60,12 +61,14 @@ ifeq   (,$(filter GCC%,$(.VARIABLES)))
 
   # If this version is not in the list, default to the latest supported
   ifeq (,$(filter $(v),$(SUPPORTED_GCC_VERSIONS)))
-   $(info\
-		Your compiler version, GCC $(version), is not supported by the Makefile.\
-		The Makefile will assume GCC $(LATEST_GCC_VERSION).)
+    define line =
+	Your compiler version, GCC $(version), is not supported by the Makefile.
+	The Makefile will assume GCC $(LATEST_GCC_VERSION).))
+    endef
+   $(call print,$(line))
    GCC$(subst .,,$(LATEST_GCC_VERSION))=1
   else
-   $(info Detected GCC $(version) (GCC$(v)))
+   $(call print,Detected GCC $(version) (GCC$(v)))
    GCC$(v)=1
   endif
  endif
@@ -206,7 +209,7 @@ endif
 
 OLDWFLAGS:=$(WFLAGS)
 # -W -Wno-unused
-WFLAGS=-Wall
+WFLAGS=-Wall -Wno-trigraphs
 ifndef GCC295
 #WFLAGS+=-Wno-packed
 endif
@@ -361,6 +364,7 @@ i_main_o=$(OBJDIR)/i_main.o
 #set OBJDIR and BIN's starting place
 OBJDIR=../objs
 BIN=../bin
+DEPDIR=../dep
 #Nasm ASM and rm
 ifdef YASM
 NASM?=yasm
@@ -383,6 +387,7 @@ ifdef DUMMY
 	INTERFACE=dummy
 	OBJDIR:=$(OBJDIR)/dummy
 	BIN:=$(BIN)/dummy
+	DEPDIR:=$(DEPDIR)/dummy
 else
 ifdef LINUX
 	NASMFORMAT=elf -DLINUX
@@ -390,9 +395,11 @@ ifdef LINUX
 ifdef LINUX64
 	OBJDIR:=$(OBJDIR)/Linux64
 	BIN:=$(BIN)/Linux64
+	DEPDIR:=$(DEPDIR)/Linux64
 else
 	OBJDIR:=$(OBJDIR)/Linux
 	BIN:=$(BIN)/Linux
+	DEPDIR:=$(DEPDIR)/Linux
 endif
 else
 ifdef FREEBSD
@@ -402,6 +409,7 @@ ifdef FREEBSD
 
 	OBJDIR:=$(OBJDIR)/FreeBSD
 	BIN:=$(BIN)/FreeBSD
+	DEPDIR:=$(DEPDIR)/Linux
 else
 ifdef SOLARIS
 	INTERFACE=sdl
@@ -410,6 +418,7 @@ ifdef SOLARIS
 
 	OBJDIR:=$(OBJDIR)/Solaris
 	BIN:=$(BIN)/Solaris
+	DEPDIR:=$(DEPDIR)/Solaris
 else
 ifdef CYGWIN32
 	INTERFACE=sdl
@@ -418,18 +427,21 @@ ifdef CYGWIN32
 
 	OBJDIR:=$(OBJDIR)/cygwin
 	BIN:=$(BIN)/Cygwin
+	DEPDIR:=$(DEPDIR)/Cygwin
 else
 ifdef MINGW64
 	#NASMFORMAT=win64
 	SDL=1
 	OBJDIR:=$(OBJDIR)/Mingw64
 	BIN:=$(BIN)/Mingw64
+	DEPDIR:=$(DEPDIR)/Mingw64
 else
 ifdef MINGW
 	NASMFORMAT=win32
 	SDL=1
 	OBJDIR:=$(OBJDIR)/Mingw
 	BIN:=$(BIN)/Mingw
+	DEPDIR:=$(DEPDIR)/Mingw
 endif
 endif
 endif
@@ -441,6 +453,7 @@ endif
 ifdef ARCHNAME
 	OBJDIR:=$(OBJDIR)/$(ARCHNAME)
 	BIN:=$(BIN)/$(ARCHNAME)
+	DEPDIR:=$(DEPDIR)/$(ARCHNAME)
 endif
 
 OBJDUMP_OPTS?=--wide --source --line-numbers
@@ -449,14 +462,17 @@ LD=$(CC)
 ifdef SDL
 	INTERFACE=sdl
 	OBJDIR:=$(OBJDIR)/SDL
+	DEPDIR:=$(DEPDIR)/SDL
 endif
 
 ifndef DUMMY
 ifdef DEBUGMODE
 	OBJDIR:=$(OBJDIR)/Debug
 	BIN:=$(BIN)/Debug
+	DEPDIR:=$(DEPDIR)/Debug
 else
 	OBJDIR:=$(OBJDIR)/Release
 	BIN:=$(BIN)/Release
+	DEPDIR:=$(DEPDIR)/Release
 endif
 endif
diff --git a/src/am_map.c b/src/am_map.c
index 53a7480a5468d113226cdcbdde34d495f735e55d..ef0ebb88cd33e3d865095015cfd8be09a8487388 100644
--- a/src/am_map.c
+++ b/src/am_map.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/am_map.h b/src/am_map.h
index 1c8fa70e4b8274b76b17444fe6b61d28cfdc4617..022a7208b3fdf5a94f38101f5f1daccb2ff802ed 100644
--- a/src/am_map.h
+++ b/src/am_map.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/apng.c b/src/apng.c
index 0abbe541d822082b37b83e3aaaa73a96f76d4240..36b205c60998099009c21ce6a49fe97a71d44faa 100644
--- a/src/apng.c
+++ b/src/apng.c
@@ -1,5 +1,5 @@
 /*
-Copyright 2019-2020, James R.
+Copyright 2019-2021, James R.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/src/apng.h b/src/apng.h
index a8b5c8f2422ef9fdb23a04038335d7200f37516b..893b523cbcacb8fd9f58a5be59b8dac3ef787596 100644
--- a/src/apng.h
+++ b/src/apng.h
@@ -1,5 +1,5 @@
 /*
-Copyright 2019-2020, James R.
+Copyright 2019-2021, James R.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
diff --git a/src/asm_defs.inc b/src/asm_defs.inc
index ec286b0bd1bc7a6633fa0708c64751a28e90d353..9074f20f86d53523bf19030f01fb9e4e63e6283d 100644
--- a/src/asm_defs.inc
+++ b/src/asm_defs.inc
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/b_bot.c b/src/b_bot.c
index ba5aa3ccff6aa30a02db53984be72c9f1698f6bd..9213da95eb87464a19fc93e0a8ef70952b355624 100644
--- a/src/b_bot.c
+++ b/src/b_bot.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2007-2016 by John "JTE" Muniz.
-// Copyright (C) 2011-2020 by Sonic Team Junior.
+// Copyright (C) 2011-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/b_bot.h b/src/b_bot.h
index 2806bd68f892ab394ccb7db6a03ceee79062e565..9f55637d14d8543f14f5dd2926e21fb9d36a955c 100644
--- a/src/b_bot.h
+++ b/src/b_bot.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2007-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/byteptr.h b/src/byteptr.h
index 01a6293b41401f9b663b6b672986a286b85e449a..4c8414fae29c7d3498a9a085f607243d261c3af9 100644
--- a/src/byteptr.h
+++ b/src/byteptr.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/command.c b/src/command.c
index 58434ef8983a1a0ed1816a9522783214896351b1..95b1fd67d84a31686a2943cc2702c0d6acb90607 100644
--- a/src/command.c
+++ b/src/command.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1433,6 +1433,7 @@ static void Setvalue(consvar_t *var, const char *valstr, boolean stealth)
 						if (var->revert.allocated)
 						{
 							Z_Free(var->revert.v.string);
+							var->revert.allocated = false; // the below value is not allocated in zone memory, don't try to free it!
 						}
 
 						var->revert.v.const_munge = var->PossibleValue[i].strvalue;
@@ -1440,6 +1441,10 @@ static void Setvalue(consvar_t *var, const char *valstr, boolean stealth)
 						return;
 					}
 
+					// free the old value string
+					Z_Free(var->zstring);
+					var->zstring = NULL;
+
 					var->value = var->PossibleValue[i].value;
 					var->string = var->PossibleValue[i].strvalue;
 					goto finish;
@@ -1502,13 +1507,7 @@ static void Setvalue(consvar_t *var, const char *valstr, boolean stealth)
 found:
 			if (client && execversion_enabled)
 			{
-				if (var->revert.allocated)
-				{
-					Z_Free(var->revert.v.string);
-				}
-
 				var->revert.v.const_munge = var->PossibleValue[i].strvalue;
-
 				return;
 			}
 
@@ -1523,6 +1522,7 @@ found:
 		if (var->revert.allocated)
 		{
 			Z_Free(var->revert.v.string);
+			// Z_StrDup creates a new zone memory block, so we can keep the allocated flag on
 		}
 
 		var->revert.v.string = Z_StrDup(valstr);
@@ -1577,7 +1577,7 @@ finish:
 	}
 	var->flags |= CV_MODIFIED;
 	// raise 'on change' code
-	LUA_CVarChanged(var->name); // let consolelib know what cvar this is.
+	LUA_CVarChanged(var); // let consolelib know what cvar this is.
 	if (var->flags & CV_CALL && !stealth)
 		var->func();
 
@@ -1787,6 +1787,7 @@ void CV_RevertNetVars(void)
 			if (cvar->revert.allocated)
 			{
 				Z_Free(cvar->revert.v.string);
+				cvar->revert.allocated = false; // no value being held now
 			}
 
 			cvar->revert.v.string = NULL;
diff --git a/src/command.h b/src/command.h
index ea5593395cc369e4f771bb7f55abf737045a503b..34fd15963262d6ec4e4416ac8cbb514301f72d6f 100644
--- a/src/command.h
+++ b/src/command.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -158,7 +158,7 @@ typedef struct consvar_s //NULL, NULL, 0, NULL, NULL |, 0, NULL, NULL, 0, 0, NUL
 
 /* name, defaultvalue, flags, PossibleValue, func */
 #define CVAR_INIT( ... ) \
-{ __VA_ARGS__, 0, NULL, NULL, {0}, 0U, (char)0, NULL }
+{ __VA_ARGS__, 0, NULL, NULL, {0, {NULL}}, 0U, (char)0, NULL }
 
 #ifdef OLD22DEMOCOMPAT
 typedef struct old_demo_var old_demo_var_t;
diff --git a/src/config.h.in b/src/config.h.in
index a6f43a7d7b6ab1df4f2abc00e110b97c4290a0cd..db794cccc82a59eb378f53f9adaa4d5d1bd3cb20 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -34,12 +34,13 @@
  * Last updated 2020 / 07 / 10 - v2.2.6 - player.dta & patch.pk3
  * Last updated 2020 / 09 / 27 - v2.2.7 - patch.pk3
  * Last updated 2020 / 10 / 02 - v2.2.8 - patch.pk3
+ * Last updated 2021 / 05 / 06 - v2.2.9 - patch.pk3 & zones.pk3
  */
 #define ASSET_HASH_SRB2_PK3   "0277c9416756627004e83cbb5b2e3e28"
-#define ASSET_HASH_ZONES_PK3  "f7e88afb6af7996a834c7d663144bead"
+#define ASSET_HASH_ZONES_PK3  "f8f3e2b5deacf40f14e36686a07d44bb"
 #define ASSET_HASH_PLAYER_DTA "49dad7b24634c89728cc3e0b689e12bb"
 #ifdef USE_PATCH_DTA
-#define ASSET_HASH_PATCH_PK3  "466cdf60075262b3f5baa5e07f0999e8"
+#define ASSET_HASH_PATCH_PK3  "7d467a883f7887b3c311798ee2f56b6a"
 #endif
 
 #endif
diff --git a/src/console.c b/src/console.c
index c7bfe0fe18bd2a016757424b625dfefdc1596944..9e65a97b19a0a3ed63612009f5f0a8490357b36d 100644
--- a/src/console.c
+++ b/src/console.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -826,6 +826,12 @@ static void CON_InputDelSelection(void)
 
 	Lock_state();
 
+	if (!input_cur)
+	{
+		Unlock_state();
+		return;
+	}
+
 	if (input_cur > input_sel)
 	{
 		start = input_sel;
@@ -1297,10 +1303,6 @@ boolean CON_Responder(event_t *ev)
 	if (key < 32 || key > 127)
 		return true;
 
-	// add key to cmd line here
-	if (key >= 'A' && key <= 'Z' && !(shiftdown ^ capslock)) //this is only really necessary for dedicated servers
-		key = key + 'a' - 'A';
-
 	if (input_sel != input_cur)
 		CON_InputDelSelection();
 	CON_InputAddChar(key);
@@ -1695,7 +1697,10 @@ static void CON_DrawHudlines(void)
 			{
 				charflags = (*p & 0x7f) << V_CHARCOLORSHIFT;
 				p++;
+				c++;
 			}
+			if (c >= con_width)
+				break;
 			if (*p < HU_FONTSTART)
 				;//charwidth = 4 * con_scalefactor;
 			else
@@ -1816,7 +1821,10 @@ static void CON_DrawConsole(void)
 			{
 				charflags = (*p & 0x7f) << V_CHARCOLORSHIFT;
 				p++;
+				c++;
 			}
+			if (c >= con_width)
+				break;
 			V_DrawCharacter(x, y, (INT32)(*p) | charflags | cv_constextsize.value | V_NOSCALESTART, true);
 		}
 	}
diff --git a/src/console.h b/src/console.h
index 0296f4f6e658e82a01d78a2ae05f636d90e411ed..28f40d308270cc279bc70b5995b6f3fdf378536c 100644
--- a/src/console.h
+++ b/src/console.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_clisrv.c b/src/d_clisrv.c
index 2a461be349466b6aa1214299ab06c4d4479f95ff..1549811c127ec64ffde85558bffdf92487223aaf 100644
--- a/src/d_clisrv.c
+++ b/src/d_clisrv.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1565,15 +1565,6 @@ static void CL_LoadReceivedSavegame(boolean reloading)
 		}
 		CONS_Printf("\"\n");
 	}
-	else
-	{
-		CONS_Alert(CONS_ERROR, M_GetText("Can't load the level!\n"));
-		Z_Free(savebuffer);
-		save_p = NULL;
-		if (unlink(tmpsave) == -1)
-			CONS_Alert(CONS_ERROR, M_GetText("Can't delete %s\n"), tmpsave);
-		return;
-	}
 
 	// done
 	Z_Free(savebuffer);
@@ -2961,7 +2952,7 @@ static void Got_KickCmd(UINT8 **p, INT32 playernum)
 	{
 		case KICK_MSG_GO_AWAY:
 			if (!players[pnum].quittime)
-				HU_AddChatText(va("\x82*%s has been kicked (Go away)", player_names[pnum]), false);
+				HU_AddChatText(va("\x82*%s has been kicked (No reason given)", player_names[pnum]), false);
 			kickreason = KR_KICK;
 			break;
 		case KICK_MSG_PING_HIGH:
@@ -2969,7 +2960,7 @@ static void Got_KickCmd(UINT8 **p, INT32 playernum)
 			kickreason = KR_PINGLIMIT;
 			break;
 		case KICK_MSG_CON_FAIL:
-			HU_AddChatText(va("\x82*%s left the game (Synch Failure)", player_names[pnum]), false);
+			HU_AddChatText(va("\x82*%s left the game (Synch failure)", player_names[pnum]), false);
 			kickreason = KR_SYNCH;
 
 			if (M_CheckParm("-consisdump")) // Helps debugging some problems
@@ -3015,7 +3006,7 @@ static void Got_KickCmd(UINT8 **p, INT32 playernum)
 			kickreason = KR_LEAVE;
 			break;
 		case KICK_MSG_BANNED:
-			HU_AddChatText(va("\x82*%s has been banned (Don't come back)", player_names[pnum]), false);
+			HU_AddChatText(va("\x82*%s has been banned (No reason given)", player_names[pnum]), false);
 			kickreason = KR_BAN;
 			break;
 		case KICK_MSG_CUSTOM_KICK:
@@ -3112,7 +3103,7 @@ consvar_t cv_maxplayers = CVAR_INIT ("maxplayers", "8", CV_SAVE|CV_NETVAR, maxpl
 static CV_PossibleValue_t joindelay_cons_t[] = {{1, "MIN"}, {3600, "MAX"}, {0, "Off"}, {0, NULL}};
 consvar_t cv_joindelay = CVAR_INIT ("joindelay", "10", CV_SAVE|CV_NETVAR, joindelay_cons_t, NULL);
 static CV_PossibleValue_t rejointimeout_cons_t[] = {{1, "MIN"}, {60 * FRACUNIT, "MAX"}, {0, "Off"}, {0, NULL}};
-consvar_t cv_rejointimeout = CVAR_INIT ("rejointimeout", "Off", CV_SAVE|CV_NETVAR|CV_FLOAT, rejointimeout_cons_t, NULL);
+consvar_t cv_rejointimeout = CVAR_INIT ("rejointimeout", "2", CV_SAVE|CV_NETVAR|CV_FLOAT, rejointimeout_cons_t, NULL);
 
 static CV_PossibleValue_t resynchattempts_cons_t[] = {{1, "MIN"}, {20, "MAX"}, {0, "No"}, {0, NULL}};
 consvar_t cv_resynchattempts = CVAR_INIT ("resynchattempts", "10", CV_SAVE|CV_NETVAR, resynchattempts_cons_t, NULL);
@@ -4268,7 +4259,7 @@ static void HandlePacketFromPlayer(SINT8 node)
 		case PT_RECEIVEDGAMESTATE:
 			sendingsavegame[node] = false;
 			resendingsavegame[node] = false;
-			savegameresendcooldown[node] = I_GetTime() + 15 * TICRATE;
+			savegameresendcooldown[node] = I_GetTime() + 5 * TICRATE;
 			break;
 // -------------------------------------------- CLIENT RECEIVE ----------
 		case PT_SERVERTICS:
@@ -4480,70 +4471,73 @@ static INT16 Consistancy(void)
 		ret += P_GetRandSeed();
 
 #ifdef MOBJCONSISTANCY
-	for (th = thlist[THINK_MOBJ].next; th != &thlist[THINK_MOBJ]; th = th->next)
+	if (gamestate == GS_LEVEL)
 	{
-		if (th->function.acp1 == (actionf_p1)P_RemoveThinkerDelayed)
-			continue;
+		for (th = thlist[THINK_MOBJ].next; th != &thlist[THINK_MOBJ]; th = th->next)
+		{
+			if (th->function.acp1 == (actionf_p1)P_RemoveThinkerDelayed)
+				continue;
 
-		mo = (mobj_t *)th;
+			mo = (mobj_t *)th;
 
-		if (mo->flags & (MF_SPECIAL | MF_SOLID | MF_PUSHABLE | MF_BOSS | MF_MISSILE | MF_SPRING | MF_MONITOR | MF_FIRE | MF_ENEMY | MF_PAIN | MF_STICKY))
-		{
-			ret -= mo->type;
-			ret += mo->x;
-			ret -= mo->y;
-			ret += mo->z;
-			ret -= mo->momx;
-			ret += mo->momy;
-			ret -= mo->momz;
-			ret += mo->angle;
-			ret -= mo->flags;
-			ret += mo->flags2;
-			ret -= mo->eflags;
-			if (mo->target)
+			if (mo->flags & (MF_SPECIAL | MF_SOLID | MF_PUSHABLE | MF_BOSS | MF_MISSILE | MF_SPRING | MF_MONITOR | MF_FIRE | MF_ENEMY | MF_PAIN | MF_STICKY))
 			{
-				ret += mo->target->type;
-				ret -= mo->target->x;
-				ret += mo->target->y;
-				ret -= mo->target->z;
-				ret += mo->target->momx;
-				ret -= mo->target->momy;
-				ret += mo->target->momz;
-				ret -= mo->target->angle;
-				ret += mo->target->flags;
-				ret -= mo->target->flags2;
-				ret += mo->target->eflags;
-				ret -= mo->target->state - states;
-				ret += mo->target->tics;
-				ret -= mo->target->sprite;
-				ret += mo->target->frame;
-			}
-			else
-				ret ^= 0x3333;
-			if (mo->tracer && mo->tracer->type != MT_OVERLAY)
-			{
-				ret += mo->tracer->type;
-				ret -= mo->tracer->x;
-				ret += mo->tracer->y;
-				ret -= mo->tracer->z;
-				ret += mo->tracer->momx;
-				ret -= mo->tracer->momy;
-				ret += mo->tracer->momz;
-				ret -= mo->tracer->angle;
-				ret += mo->tracer->flags;
-				ret -= mo->tracer->flags2;
-				ret += mo->tracer->eflags;
-				ret -= mo->tracer->state - states;
-				ret += mo->tracer->tics;
-				ret -= mo->tracer->sprite;
-				ret += mo->tracer->frame;
+				ret -= mo->type;
+				ret += mo->x;
+				ret -= mo->y;
+				ret += mo->z;
+				ret -= mo->momx;
+				ret += mo->momy;
+				ret -= mo->momz;
+				ret += mo->angle;
+				ret -= mo->flags;
+				ret += mo->flags2;
+				ret -= mo->eflags;
+				if (mo->target)
+				{
+					ret += mo->target->type;
+					ret -= mo->target->x;
+					ret += mo->target->y;
+					ret -= mo->target->z;
+					ret += mo->target->momx;
+					ret -= mo->target->momy;
+					ret += mo->target->momz;
+					ret -= mo->target->angle;
+					ret += mo->target->flags;
+					ret -= mo->target->flags2;
+					ret += mo->target->eflags;
+					ret -= mo->target->state - states;
+					ret += mo->target->tics;
+					ret -= mo->target->sprite;
+					ret += mo->target->frame;
+				}
+				else
+					ret ^= 0x3333;
+				if (mo->tracer && mo->tracer->type != MT_OVERLAY)
+				{
+					ret += mo->tracer->type;
+					ret -= mo->tracer->x;
+					ret += mo->tracer->y;
+					ret -= mo->tracer->z;
+					ret += mo->tracer->momx;
+					ret -= mo->tracer->momy;
+					ret += mo->tracer->momz;
+					ret -= mo->tracer->angle;
+					ret += mo->tracer->flags;
+					ret -= mo->tracer->flags2;
+					ret += mo->tracer->eflags;
+					ret -= mo->tracer->state - states;
+					ret += mo->tracer->tics;
+					ret -= mo->tracer->sprite;
+					ret += mo->tracer->frame;
+				}
+				else
+					ret ^= 0xAAAA;
+				ret -= mo->state - states;
+				ret += mo->tics;
+				ret -= mo->sprite;
+				ret += mo->frame;
 			}
-			else
-				ret ^= 0xAAAA;
-			ret -= mo->state - states;
-			ret += mo->tics;
-			ret -= mo->sprite;
-			ret += mo->frame;
 		}
 	}
 #endif
diff --git a/src/d_clisrv.h b/src/d_clisrv.h
index 3d67525dacc65dd6c79d18c544cb7ff9fdffebac..f3eb524238d84461147b38252c107ed248dea578 100644
--- a/src/d_clisrv.h
+++ b/src/d_clisrv.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_event.h b/src/d_event.h
index 3cce8fad1fe07908bd72f5220f7c20d724d46240..1fd2e3824251082d6c059fffef8ddbe76f67a15c 100644
--- a/src/d_event.h
+++ b/src/d_event.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_main.c b/src/d_main.c
index a89f4ed2dc93af3efc4fd3acd59647b1dd208668..900390864c645288369a611a24ef9d6de7770e4a 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -15,7 +15,7 @@
 ///        plus functions to parse command line parameters, configure game
 ///        parameters, and call the startup functions.
 
-#if (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)
+#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 #include <sys/stat.h>
 #include <sys/types.h>
 #endif
@@ -61,7 +61,7 @@
 #include "p_local.h" // chasecam
 #include "mserv.h" // ms_RoomId
 #include "m_misc.h" // screenshot functionality
-#include "dehacked.h" // Dehacked list test
+#include "deh_tables.h" // Dehacked list test
 #include "m_cond.h" // condition initialization
 #include "fastcmp.h"
 #include "keys.h"
@@ -934,7 +934,7 @@ static void IdentifyVersion(void)
 	char *srb2wad;
 	const char *srb2waddir = NULL;
 
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	// change to the directory where 'srb2.pk3' is found
 	srb2waddir = I_LocateWad();
 #endif
@@ -1045,7 +1045,7 @@ void D_SRB2Main(void)
 	// Print GPL notice for our console users (Linux)
 	CONS_Printf(
 	"\n\nSonic Robo Blast 2\n"
-	"Copyright (C) 1998-2020 by Sonic Team Junior\n\n"
+	"Copyright (C) 1998-2021 by Sonic Team Junior\n\n"
 	"This program comes with ABSOLUTELY NO WARRANTY.\n\n"
 	"This is free software, and you are welcome to redistribute it\n"
 	"and/or modify it under the terms of the GNU General Public License\n"
@@ -1072,7 +1072,7 @@ void D_SRB2Main(void)
 	G_LoadGameSettings();
 
 	// Test Dehacked lists
-	DEH_Check();
+	DEH_TableCheck();
 
 	// Netgame URL special case: change working dir to EXE folder.
 	ChangeDirForUrlHandler();
@@ -1107,7 +1107,7 @@ void D_SRB2Main(void)
 
 		if (!userhome)
 		{
-#if ((defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)) && !defined (__CYGWIN__)
+#if (defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)) && !defined (__CYGWIN__)
 			I_Error("Please set $HOME to your home directory\n");
 #else
 			if (dedicated)
@@ -1287,7 +1287,7 @@ void D_SRB2Main(void)
 
 	G_LoadGameData();
 
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	VID_PrepareModeList(); // Regenerate Modelist according to cv_fullscreen
 #endif
 
@@ -1553,7 +1553,7 @@ const char *D_Home(void)
 		userhome = M_GetNextParm();
 	else
 	{
-#if !((defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)) && !defined (__APPLE__)
+#if !(defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON))
 		if (FIL_FileOK(CONFIGFILENAME))
 			usehome = false; // Let's NOT use home
 		else
diff --git a/src/d_main.h b/src/d_main.h
index 81de0634d0ca9ebe4cc03972590e99db631b6991..e282906d9577fa9f869018dbc57b5e7899634d60 100644
--- a/src/d_main.h
+++ b/src/d_main.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -40,10 +40,6 @@ void D_SRB2Main(void);
 
 // Called by IO functions when input is detected.
 void D_PostEvent(const event_t *ev);
-#if defined (PC_DOS) && !defined (DOXYGEN)
-void D_PostEvent_end(void);    // delimiter for locking memory
-#endif
-
 void D_ProcessEvents(void);
 
 const char *D_Home(void);
diff --git a/src/d_net.c b/src/d_net.c
index d534b1b081360da6f7274f33e14cb178c1d2f632..9e5abe24a0adbd1b81d5ab67e102b7689bca53b3 100644
--- a/src/d_net.c
+++ b/src/d_net.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_net.h b/src/d_net.h
index ea6b5d4d9a58e6b5d8fd8f62a3ca980e2986b4e6..dbc6d8ba5ab6288ad76e2003cf67fdd2d6aa43b1 100644
--- a/src/d_net.h
+++ b/src/d_net.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_netcmd.c b/src/d_netcmd.c
index 9052e9ac0b2e0913d2fef460436ef1614e1b5830..0a7172b127d5d815e58cfbf7ca863a2254461770 100644
--- a/src/d_netcmd.c
+++ b/src/d_netcmd.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -168,7 +168,7 @@ void SendWeaponPref(void);
 void SendWeaponPref2(void);
 
 static CV_PossibleValue_t usemouse_cons_t[] = {{0, "Off"}, {1, "On"}, {2, "Force"}, {0, NULL}};
-#if (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)
+#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 static CV_PossibleValue_t mouse2port_cons_t[] = {{0, "/dev/gpmdata"}, {1, "/dev/ttyS0"},
 	{2, "/dev/ttyS1"}, {3, "/dev/ttyS2"}, {4, "/dev/ttyS3"}, {0, NULL}};
 #else
@@ -255,7 +255,7 @@ consvar_t cv_joyscale2 = CVAR_INIT ("padscale2", "1", CV_SAVE|CV_CALL, NULL, I_J
 consvar_t cv_joyscale = CVAR_INIT ("padscale", "1", CV_SAVE|CV_HIDEN, NULL, NULL); //Alam: Dummy for save
 consvar_t cv_joyscale2 = CVAR_INIT ("padscale2", "1", CV_SAVE|CV_HIDEN, NULL, NULL); //Alam: Dummy for save
 #endif
-#if (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)
+#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 consvar_t cv_mouse2port = CVAR_INIT ("mouse2port", "/dev/gpmdata", CV_SAVE, mouse2port_cons_t, NULL);
 consvar_t cv_mouse2opt = CVAR_INIT ("mouse2opt", "0", CV_SAVE, NULL, NULL);
 #else
@@ -788,7 +788,7 @@ void D_RegisterClientCommands(void)
 	// WARNING: the order is important when initialising mouse2
 	// we need the mouse2port
 	CV_RegisterVar(&cv_mouse2port);
-#if (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)
+#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 	CV_RegisterVar(&cv_mouse2opt);
 #endif
 	CV_RegisterVar(&cv_controlperkey);
@@ -1313,8 +1313,9 @@ static void SendNameAndColor(void)
 	cv_skin.value = R_SkinAvailable(cv_skin.string);
 	if ((cv_skin.value < 0) || !R_SkinUsable(consoleplayer, cv_skin.value))
 	{
-		CV_StealthSet(&cv_skin, DEFAULTSKIN);
-		cv_skin.value = 0;
+		INT32 defaultSkinNum = GetPlayerDefaultSkin(consoleplayer);
+		CV_StealthSet(&cv_skin, skins[defaultSkinNum].name);
+		cv_skin.value = defaultSkinNum;
 	}
 
 	// Finally write out the complete packet and send it off.
@@ -1475,7 +1476,8 @@ static void Got_NameAndColor(UINT8 **cp, INT32 playernum)
 	if (server && (p != &players[consoleplayer] && p != &players[secondarydisplayplayer]))
 	{
 		boolean kick = false;
-		INT32 s;
+		UINT32 unlockShift = 0;
+		UINT32 i;
 
 		// team colors
 		if (G_GametypeHasTeams())
@@ -1491,12 +1493,29 @@ static void Got_NameAndColor(UINT8 **cp, INT32 playernum)
 			kick = true;
 
 		// availabilities
-		for (s = 0; s < MAXSKINS; s++)
+		for (i = 0; i < MAXUNLOCKABLES; i++)
 		{
-			if (!skins[s].availability && (p->availabilities & (1 << s)))
+			if (unlockables[i].type != SECRET_SKIN)
+			{
+				continue;
+			}
+
+			unlockShift++;
+		}
+
+		// If they set an invalid bit to true, then likely a modified client
+		if (unlockShift < 32) // 32 is the max the data type allows
+		{
+			UINT32 illegalMask = UINT32_MAX;
+
+			for (i = 0; i < unlockShift; i++)
+			{
+				illegalMask &= ~(1 << i);
+			}
+			
+			if ((p->availabilities & illegalMask) != 0)
 			{
 				kick = true;
-				break;
 			}
 		}
 
@@ -2130,7 +2149,7 @@ static void Command_Pause(void)
 
 	if (cv_pause.value || server || (IsPlayerAdmin(consoleplayer)))
 	{
-		if (modeattacking || !(gamestate == GS_LEVEL || gamestate == GS_INTERMISSION))
+		if (modeattacking || !(gamestate == GS_LEVEL || gamestate == GS_INTERMISSION) || (marathonmode && gamestate == GS_INTERMISSION))
 		{
 			CONS_Printf(M_GetText("You can't pause here.\n"));
 			return;
diff --git a/src/d_netcmd.h b/src/d_netcmd.h
index ac39626a4e381a454ce0c81e51aa604f70840fed..bc5f72209987792f20b09b6a37e6f0255436ea00 100644
--- a/src/d_netcmd.h
+++ b/src/d_netcmd.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -45,7 +45,7 @@ extern consvar_t cv_joyscale2;
 // splitscreen with second mouse
 extern consvar_t cv_mouse2port;
 extern consvar_t cv_usemouse2;
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON)
+#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 extern consvar_t cv_mouse2opt;
 #endif
 
diff --git a/src/d_netfil.c b/src/d_netfil.c
index 8f661bb5fb26f8f341ba77daa379b77c25fa6dbc..55ab4ea238f8564e73e3ff9a3b2cfe9b5636ba14 100644
--- a/src/d_netfil.c
+++ b/src/d_netfil.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -15,7 +15,7 @@
 
 #include <time.h>
 
-#if defined (_WIN32) || defined (__DJGPP__)
+#ifdef _WIN32
 #include <io.h>
 #include <direct.h>
 #else
@@ -30,10 +30,6 @@
 #elif defined (_WIN32)
 #include <sys/utime.h>
 #endif
-#ifdef __DJGPP__
-#include <dir.h>
-#include <utime.h>
-#endif
 
 #include "doomdef.h"
 #include "doomstat.h"
@@ -562,7 +558,7 @@ static void SV_PrepareSendLuaFileToNextNode(void)
 
     // Find a client to send the file to
 	for (i = 1; i < MAXNETNODES; i++)
-		if (nodeingame[i] && luafiletransfers->nodestatus[i] == LFTNS_WAITING) // Node waiting
+		if (luafiletransfers->nodestatus[i] == LFTNS_WAITING) // Node waiting
 		{
 			// Tell the client we're about to send them the file
 			netbuffer->packettype = PT_SENDINGLUAFILE;
@@ -570,6 +566,7 @@ static void SV_PrepareSendLuaFileToNextNode(void)
 				I_Error("Failed to send a PT_SENDINGLUAFILE packet\n"); // !!! Todo: Handle failure a bit better lol
 
 			luafiletransfers->nodestatus[i] = LFTNS_ASKED;
+			luafiletransfers->nodetimeouts[i] = I_GetTime() + 30 * TICRATE;
 
 			return;
 		}
@@ -588,7 +585,7 @@ void SV_PrepareSendLuaFile(void)
 
 	// Set status to "waiting" for everyone
 	for (i = 0; i < MAXNETNODES; i++)
-		luafiletransfers->nodestatus[i] = LFTNS_WAITING;
+		luafiletransfers->nodestatus[i] = (nodeingame[i] ? LFTNS_WAITING : LFTNS_NONE);
 
 	if (FIL_ReadFileOK(luafiletransfers->realfilename))
 	{
@@ -649,12 +646,14 @@ void RemoveAllLuaFileTransfers(void)
 
 void SV_AbortLuaFileTransfer(INT32 node)
 {
-	if (luafiletransfers
-	&& (luafiletransfers->nodestatus[node] == LFTNS_ASKED
-	||  luafiletransfers->nodestatus[node] == LFTNS_SENDING))
+	if (luafiletransfers)
 	{
-		luafiletransfers->nodestatus[node] = LFTNS_WAITING;
-		SV_PrepareSendLuaFileToNextNode();
+		if (luafiletransfers->nodestatus[node] == LFTNS_ASKED
+			|| luafiletransfers->nodestatus[node] == LFTNS_SENDING)
+		{
+			SV_PrepareSendLuaFileToNextNode();
+		}
+		luafiletransfers->nodestatus[node] = LFTNS_NONE;
 	}
 }
 
@@ -928,6 +927,22 @@ void FileSendTicker(void)
 	filetx_t *f;
 	INT32 packetsent, ram, i, j;
 
+	// If someone is taking too long to download, kick them with a timeout
+	// to prevent blocking the rest of the server...
+	if (luafiletransfers)
+	{
+		for (i = 1; i < MAXNETNODES; i++)
+		{
+			luafiletransfernodestatus_t status = luafiletransfers->nodestatus[i];
+
+			if (status != LFTNS_NONE && status != LFTNS_WAITING && status != LFTNS_SENT
+				&& I_GetTime() > luafiletransfers->nodetimeouts[i])
+			{
+				Net_ConnectionTimeout(i);
+			}
+		}
+	}
+
 	if (!filestosend) // No file to send
 		return;
 
diff --git a/src/d_netfil.h b/src/d_netfil.h
index 1b399be75f31ae472de43c65cce64f24a8202376..ddcbcfec385b64c45bef9438992be47e8bbaf047 100644
--- a/src/d_netfil.h
+++ b/src/d_netfil.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -85,10 +85,11 @@ boolean PT_RequestFile(INT32 node);
 
 typedef enum
 {
+	LFTNS_NONE,    // This node is not connected
 	LFTNS_WAITING, // This node is waiting for the server to send the file
-	LFTNS_ASKED, // The server has told the node they're ready to send the file
+	LFTNS_ASKED,   // The server has told the node they're ready to send the file
 	LFTNS_SENDING, // The server is sending the file to this node
-	LFTNS_SENT // The node already has the file
+	LFTNS_SENT     // The node already has the file
 } luafiletransfernodestatus_t;
 
 typedef struct luafiletransfer_s
@@ -99,6 +100,7 @@ typedef struct luafiletransfer_s
 	INT32 id; // Callback ID
 	boolean ongoing;
 	luafiletransfernodestatus_t nodestatus[MAXNETNODES];
+	tic_t nodetimeouts[MAXNETNODES];
 	struct luafiletransfer_s *next;
 } luafiletransfer_t;
 
diff --git a/src/d_player.h b/src/d_player.h
index 2e7afed882ccf4b1ca1966b7439785aadf4a993a..54ab342886ccaf6e0a8e2c4bf044444a6e487d8a 100644
--- a/src/d_player.h
+++ b/src/d_player.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_think.h b/src/d_think.h
index 4bdac46272ae071e5b500bde07c83bd2ac96f39c..c3f91edc4392238c92499146ea6aefd869e7848b 100644
--- a/src/d_think.h
+++ b/src/d_think.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/d_ticcmd.h b/src/d_ticcmd.h
index 2a5ef09818f05fb001b0b03200ca092e47b77607..374585edf7ba4b1568cc785bbd93883a7683cce4 100644
--- a/src/d_ticcmd.h
+++ b/src/d_ticcmd.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/deh_lua.c b/src/deh_lua.c
index e6a436421cc14096bb1bc02689455a48df499dc1..fbeaae08c5fc11f8e339be44ad62ed1000b085b1 100644
--- a/src/deh_lua.c
+++ b/src/deh_lua.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -25,10 +25,6 @@
 #include "deh_lua.h"
 #include "deh_tables.h"
 
-#ifdef MUSICSLOT_COMPATIBILITY
-#include "deh_soc.h" // for get_mus
-#endif
-
 // freeslot takes a name (string only!)
 // and allocates it to the appropriate free slot.
 // Returns the slot number allocated for it or nil if failed.
@@ -430,29 +426,6 @@ static inline int lib_getenum(lua_State *L)
 		if (mathlib) return luaL_error(L, "sfx '%s' could not be found.\n", word);
 		return 0;
 	}
-#ifdef MUSICSLOT_COMPATIBILITY
-	else if (!mathlib && fastncmp("mus_",word,4)) {
-		p = word+4;
-		if ((i = get_mus(p, false)) == 0)
-			return 0;
-		lua_pushinteger(L, i);
-		return 1;
-	}
-	else if (mathlib && fastncmp("MUS_",word,4)) { // SOCs are ALL CAPS!
-		p = word+4;
-		if ((i = get_mus(p, false)) == 0)
-			return luaL_error(L, "music '%s' could not be found.\n", word);
-		lua_pushinteger(L, i);
-		return 1;
-	}
-	else if (mathlib && (fastncmp("O_",word,2) || fastncmp("D_",word,2))) {
-		p = word+2;
-		if ((i = get_mus(p, false)) == 0)
-			return luaL_error(L, "music '%s' could not be found.\n", word);
-		lua_pushinteger(L, i);
-		return 1;
-	}
-#endif
 	else if (!mathlib && fastncmp("pw_",word,3)) {
 		p = word+3;
 		for (i = 0; i < NUMPOWERS; i++)
diff --git a/src/deh_lua.h b/src/deh_lua.h
index cd927b9fd51bb98f3d6674dd129d9df29726ae33..9df4028bdcf9619a14fe267d202aed2343125e2f 100644
--- a/src/deh_lua.h
+++ b/src/deh_lua.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/deh_soc.c b/src/deh_soc.c
index 5b12ea1b0b9b0339890b094516e0593e252d6556..3a611f3ba18daaacd3c9f5154505176f3a1ad4cd 100644
--- a/src/deh_soc.c
+++ b/src/deh_soc.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -127,6 +127,33 @@ static float searchfvalue(const char *s)
 #endif
 
 // These are for clearing all of various things
+void clear_emblems(void)
+{
+	INT32 i;
+
+	for (i = 0; i < MAXEMBLEMS; ++i)
+	{
+		Z_Free(emblemlocations[i].stringVar);
+		emblemlocations[i].stringVar = NULL;
+	}
+
+	memset(&emblemlocations, 0, sizeof(emblemlocations));
+	numemblems = 0;
+}
+
+void clear_unlockables(void)
+{
+	INT32 i;
+
+	for (i = 0; i < MAXUNLOCKABLES; ++i)
+	{
+		Z_Free(unlockables[i].stringVar);
+		unlockables[i].stringVar = NULL;
+	}
+
+	memset(&unlockables, 0, sizeof(unlockables));
+}
+
 void clear_conditionsets(void)
 {
 	UINT8 i;
@@ -229,7 +256,10 @@ void readPlayer(MYFILE *f, INT32 num)
 
 				SLOTFOUND
 
-				for (i = 0; i < MAXLINELEN-3; i++)
+				// A friendly neighborhood alias for brevity's sake
+#define NOTE_SIZE sizeof(description[num].notes)
+
+				for (i = 0; i < (INT32)(MAXLINELEN-NOTE_SIZE-3); i++)
 				{
 					if (s[i] == '=')
 					{
@@ -239,8 +269,9 @@ void readPlayer(MYFILE *f, INT32 num)
 				}
 				if (playertext)
 				{
-					strcpy(description[num].notes, playertext);
-					strcat(description[num].notes, myhashfgets(playertext, sizeof (description[num].notes), f));
+					strlcpy(description[num].notes, playertext, NOTE_SIZE);
+					strlcat(description[num].notes,
+						myhashfgets(playertext, NOTE_SIZE, f), NOTE_SIZE);
 				}
 				else
 					strcpy(description[num].notes, "");
@@ -249,7 +280,7 @@ void readPlayer(MYFILE *f, INT32 num)
 				// It works down here, though.
 				{
 					INT32 numline = 0;
-					for (i = 0; (size_t)i < sizeof(description[num].notes)-1; i++)
+					for (i = 0; (size_t)i < NOTE_SIZE-1; i++)
 					{
 						if (numline < 20 && description[num].notes[i] == '\n')
 							numline++;
@@ -260,6 +291,7 @@ void readPlayer(MYFILE *f, INT32 num)
 				}
 				description[num].notes[strlen(description[num].notes)-1] = '\0';
 				description[num].notes[i] = '\0';
+#undef NOTE_SIZE
 				continue;
 			}
 
@@ -1140,8 +1172,10 @@ void readgametype(MYFILE *f, char *gtname)
 				}
 				if (descr)
 				{
-					strcpy(gtdescription, descr);
-					strcat(gtdescription, myhashfgets(descr, sizeof (gtdescription), f));
+					strlcpy(gtdescription, descr, sizeof (gtdescription));
+					strlcat(gtdescription,
+						myhashfgets(descr, sizeof (gtdescription), f),
+						sizeof (gtdescription));
 				}
 				else
 					strcpy(gtdescription, "");
@@ -1574,19 +1608,8 @@ void readlevelheader(MYFILE *f, INT32 num)
 						sizeof(mapheaderinfo[num-1]->musname), va("Level header %d: music", num));
 				}
 			}
-#ifdef MUSICSLOT_COMPATIBILITY
 			else if (fastcmp(word, "MUSICSLOT"))
-			{
-				i = get_mus(word2, true);
-				if (i && i <= 1035)
-					snprintf(mapheaderinfo[num-1]->musname, 7, "%sM", G_BuildMapName(i));
-				else if (i && i <= 1050)
-					strncpy(mapheaderinfo[num-1]->musname, compat_special_music_slots[i - 1036], 7);
-				else
-					mapheaderinfo[num-1]->musname[0] = 0; // becomes empty string
-				mapheaderinfo[num-1]->musname[6] = 0;
-			}
-#endif
+				deh_warning("Level header %d: MusicSlot parameter is deprecated and will be removed.\nUse \"Music\" instead.", num);
 			else if (fastcmp(word, "MUSICTRACK"))
 				mapheaderinfo[num-1]->mustrack = ((UINT16)i - 1);
 			else if (fastcmp(word, "MUSICPOS"))
@@ -1964,19 +1987,6 @@ static void readcutscenescene(MYFILE *f, INT32 num, INT32 scenenum)
 				strncpy(cutscenes[num]->scene[scenenum].musswitch, word2, 7);
 				cutscenes[num]->scene[scenenum].musswitch[6] = 0;
 			}
-#ifdef MUSICSLOT_COMPATIBILITY
-			else if (fastcmp(word, "MUSICSLOT"))
-			{
-				i = get_mus(word2, true);
-				if (i && i <= 1035)
-					snprintf(cutscenes[num]->scene[scenenum].musswitch, 7, "%sM", G_BuildMapName(i));
-				else if (i && i <= 1050)
-					strncpy(cutscenes[num]->scene[scenenum].musswitch, compat_special_music_slots[i - 1036], 7);
-				else
-					cutscenes[num]->scene[scenenum].musswitch[0] = 0; // becomes empty string
-				cutscenes[num]->scene[scenenum].musswitch[6] = 0;
-			}
-#endif
 			else if (fastcmp(word, "MUSICTRACK"))
 			{
 				cutscenes[num]->scene[scenenum].musswitchflags = ((UINT16)i) & MUSIC_TRACKMASK;
@@ -2239,19 +2249,6 @@ static void readtextpromptpage(MYFILE *f, INT32 num, INT32 pagenum)
 				strncpy(textprompts[num]->page[pagenum].musswitch, word2, 7);
 				textprompts[num]->page[pagenum].musswitch[6] = 0;
 			}
-#ifdef MUSICSLOT_COMPATIBILITY
-			else if (fastcmp(word, "MUSICSLOT"))
-			{
-				i = get_mus(word2, true);
-				if (i && i <= 1035)
-					snprintf(textprompts[num]->page[pagenum].musswitch, 7, "%sM", G_BuildMapName(i));
-				else if (i && i <= 1050)
-					strncpy(textprompts[num]->page[pagenum].musswitch, compat_special_music_slots[i - 1036], 7);
-				else
-					textprompts[num]->page[pagenum].musswitch[0] = 0; // becomes empty string
-				textprompts[num]->page[pagenum].musswitch[6] = 0;
-			}
-#endif
 			else if (fastcmp(word, "MUSICTRACK"))
 			{
 				textprompts[num]->page[pagenum].musswitchflags = ((UINT16)i) & MUSIC_TRACKMASK;
@@ -2577,20 +2574,6 @@ void readmenu(MYFILE *f, INT32 num)
 				menupres[num].musname[6] = 0;
 				titlechanged = true;
 			}
-#ifdef MUSICSLOT_COMPATIBILITY
-			else if (fastcmp(word, "MUSICSLOT"))
-			{
-				value = get_mus(word2, true);
-				if (value && value <= 1035)
-					snprintf(menupres[num].musname, 7, "%sM", G_BuildMapName(value));
-				else if (value && value <= 1050)
-					strncpy(menupres[num].musname, compat_special_music_slots[value - 1036], 7);
-				else
-					menupres[num].musname[0] = 0; // becomes empty string
-				menupres[num].musname[6] = 0;
-				titlechanged = true;
-			}
-#endif
 			else if (fastcmp(word, "MUSICTRACK"))
 			{
 				menupres[num].mustrack = ((UINT16)value - 1);
@@ -2839,26 +2822,31 @@ void readsound(MYFILE *f, INT32 num)
 			if (s[0] == '\n')
 				break;
 
+			// First remove trailing newline, if there is one
+			tmp = strchr(s, '\n');
+			if (tmp)
+				*tmp = '\0';
+
 			tmp = strchr(s, '#');
 			if (tmp)
 				*tmp = '\0';
 			if (s == tmp)
 				continue; // Skip comment lines, but don't break.
 
-			word = strtok(s, " ");
-			if (word)
-				strupr(word);
+			// Set / reset word
+			word = s;
+
+			// Get the part before the " = "
+			tmp = strchr(s, '=');
+			if (tmp)
+				*(tmp-1) = '\0';
 			else
 				break;
+			strupr(word);
 
-			word2 = strtok(NULL, " ");
-			if (word2)
-				value = atoi(word2);
-			else
-			{
-				deh_warning("No value for token %s", word);
-				continue;
-			}
+			// Now get the part after
+			word2 = tmp += 2;
+			value = atoi(word2); // used for numerical settings
 
 			if (fastcmp(word, "SINGULAR"))
 			{
@@ -3017,7 +3005,12 @@ void reademblemdata(MYFILE *f, INT32 num)
 			else if (fastcmp(word, "COLOR"))
 				emblemlocations[num-1].color = get_number(word2);
 			else if (fastcmp(word, "VAR"))
+			{
+				Z_Free(emblemlocations[num-1].stringVar);
+				emblemlocations[num-1].stringVar = Z_StrDup(word2);
+
 				emblemlocations[num-1].var = get_number(word2);
+			}
 			else
 				deh_warning("Emblem %d: unknown word '%s'", num, word);
 		}
@@ -3219,11 +3212,16 @@ void readunlockable(MYFILE *f, INT32 num)
 						unlockables[num].type = SECRET_WARP;
 					else if (fastcmp(word2, "SOUNDTEST"))
 						unlockables[num].type = SECRET_SOUNDTEST;
+					else if (fastcmp(word2, "SKIN"))
+						unlockables[num].type = SECRET_SKIN;
 					else
 						unlockables[num].type = (INT16)i;
 				}
 				else if (fastcmp(word, "VAR"))
 				{
+					Z_Free(unlockables[num].stringVar);
+					unlockables[num].stringVar = Z_StrDup(word2);
+
 					// Support using the actual map name,
 					// i.e., Level AB, Level FZ, etc.
 
@@ -4178,46 +4176,6 @@ sfxenum_t get_sfx(const char *word)
 	return sfx_None;
 }
 
-#ifdef MUSICSLOT_COMPATIBILITY
-UINT16 get_mus(const char *word, UINT8 dehacked_mode)
-{ // Returns the value of MUS_ enumerations
-	UINT16 i;
-	char lumptmp[4];
-
-	if (*word >= '0' && *word <= '9')
-		return atoi(word);
-	if (!word[2] && toupper(word[0]) >= 'A' && toupper(word[0]) <= 'Z')
-		return (UINT16)M_MapNumber(word[0], word[1]);
-
-	if (fastncmp("MUS_",word,4))
-		word += 4; // take off the MUS_
-	else if (fastncmp("O_",word,2) || fastncmp("D_",word,2))
-		word += 2; // take off the O_ or D_
-
-	strncpy(lumptmp, word, 4);
-	lumptmp[3] = 0;
-	if (fasticmp("MAP",lumptmp))
-	{
-		word += 3;
-		if (toupper(word[0]) >= 'A' && toupper(word[0]) <= 'Z')
-			return (UINT16)M_MapNumber(word[0], word[1]);
-		else if ((i = atoi(word)))
-			return i;
-
-		word -= 3;
-		if (dehacked_mode)
-			deh_warning("Couldn't find music named 'MUS_%s'",word);
-		return 0;
-	}
-	for (i = 0; compat_special_music_slots[i][0]; ++i)
-		if (fasticmp(word, compat_special_music_slots[i]))
-			return i + 1036;
-	if (dehacked_mode)
-		deh_warning("Couldn't find music named 'MUS_%s'",word);
-	return 0;
-}
-#endif
-
 hudnum_t get_huditem(const char *word)
 { // Returns the value of HUD_ enumerations
 	hudnum_t i;
@@ -4448,13 +4406,6 @@ static fixed_t find_const(const char **rword)
 		free(word);
 		return r;
 	}
-#ifdef MUSICSLOT_COMPATIBILITY
-	else if (fastncmp("MUS_",word,4) || fastncmp("O_",word,2)) {
-		r = get_mus(word, true);
-		free(word);
-		return r;
-	}
-#endif
 	else if (fastncmp("PW_",word,3)) {
 		r = get_power(word);
 		free(word);
diff --git a/src/deh_soc.h b/src/deh_soc.h
index 2bcb52e709e9ef1003753fdf68ee6647af9c3e60..28e3c9512336b91700a648f35f0fe3e922356d69 100644
--- a/src/deh_soc.h
+++ b/src/deh_soc.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -43,7 +43,7 @@
 
 #include "info.h"
 #include "dehacked.h"
-#include "doomdef.h" // MUSICSLOT_COMPATIBILITY, HWRENDER
+#include "doomdef.h" // HWRENDER
 
 // Crazy word-reading stuff
 /// \todo Put these in a seperate file or something.
@@ -52,9 +52,6 @@ statenum_t get_state(const char *word);
 spritenum_t get_sprite(const char *word);
 playersprite_t get_sprite2(const char *word);
 sfxenum_t get_sfx(const char *word);
-#ifdef MUSICSLOT_COMPATIBILITY
-UINT16 get_mus(const char *word, UINT8 dehacked_mode);
-#endif
 hudnum_t get_huditem(const char *word);
 menutype_t get_menutype(const char *word);
 //INT16 get_gametype(const char *word);
@@ -84,6 +81,8 @@ void readskincolor(MYFILE *f, INT32 num);
 void readthing(MYFILE *f, INT32 num);
 void readfreeslots(MYFILE *f);
 void readPlayer(MYFILE *f, INT32 num);
+void clear_emblems(void);
+void clear_unlockables(void);
 void clear_levels(void);
 void clear_conditionsets(void);
 #endif
diff --git a/src/deh_tables.c b/src/deh_tables.c
index 3039bf7dec22dfecc241bd253ef5175d83aee026..23faf0092be6796ac2310ff8d43d37c44f15c46d 100644
--- a/src/deh_tables.c
+++ b/src/deh_tables.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -5457,3 +5457,27 @@ struct int_const_s const INT_CONST[] = {
 
 	{NULL,0}
 };
+
+// For this to work compile-time without being in this file,
+// this function would need to check sizes at runtime, without sizeof
+void DEH_TableCheck(void)
+{
+#if defined(_DEBUG) || defined(PARANOIA)
+	const size_t dehstates = sizeof(STATE_LIST)/sizeof(const char*);
+	const size_t dehmobjs  = sizeof(MOBJTYPE_LIST)/sizeof(const char*);
+	const size_t dehpowers = sizeof(POWERS_LIST)/sizeof(const char*);
+	const size_t dehcolors = sizeof(COLOR_ENUMS)/sizeof(const char*);
+
+	if (dehstates != S_FIRSTFREESLOT)
+		I_Error("You forgot to update the Dehacked states list, you dolt!\n(%d states defined, versus %s in the Dehacked list)\n", S_FIRSTFREESLOT, sizeu1(dehstates));
+
+	if (dehmobjs != MT_FIRSTFREESLOT)
+		I_Error("You forgot to update the Dehacked mobjtype list, you dolt!\n(%d mobj types defined, versus %s in the Dehacked list)\n", MT_FIRSTFREESLOT, sizeu1(dehmobjs));
+
+	if (dehpowers != NUMPOWERS)
+		I_Error("You forgot to update the Dehacked powers list, you dolt!\n(%d powers defined, versus %s in the Dehacked list)\n", NUMPOWERS, sizeu1(dehpowers));
+
+	if (dehcolors != SKINCOLOR_FIRSTFREESLOT)
+		I_Error("You forgot to update the Dehacked colors list, you dolt!\n(%d colors defined, versus %s in the Dehacked list)\n", SKINCOLOR_FIRSTFREESLOT, sizeu1(dehcolors));
+#endif
+}
diff --git a/src/deh_tables.h b/src/deh_tables.h
index 2c6b3e20407ec454a47a9b301fcf5003cb4220a8..1f265cc9992da1c3d5c6e53781f6151710bc798f 100644
--- a/src/deh_tables.h
+++ b/src/deh_tables.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -72,4 +72,7 @@ extern const char *const MENUTYPES_LIST[];
 
 extern struct int_const_s const INT_CONST[];
 
+// Moved to this file because it can't work compile-time otherwise
+void DEH_TableCheck(void);
+
 #endif
diff --git a/src/dehacked.c b/src/dehacked.c
index b4266326759b822ed91e17211f639c052a9af2bb..da8c81c351f845a98b59e3cd494e8f29c2a6b7d1 100644
--- a/src/dehacked.c
+++ b/src/dehacked.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -188,26 +188,11 @@ static void DEH_LoadDehackedFile(MYFILE *f, boolean mainfile)
 	dbg_line = -1; // start at -1 so the first line is 0.
 	while (!myfeof(f))
 	{
-		char origpos[128];
-		INT32 size = 0;
-		char *traverse;
-
 		myfgets(s, MAXLINELEN, f);
 		memcpy(textline, s, MAXLINELEN);
 		if (s[0] == '\n' || s[0] == '#')
 			continue;
 
-		traverse = s;
-
-		while (traverse[0] != '\n')
-		{
-			traverse++;
-			size++;
-		}
-
-		strncpy(origpos, s, size);
-		origpos[size] = '\0';
-
 		if (NULL != (word = strtok(s, " "))) {
 			strupr(word);
 			if (word[strlen(word)-1] == '\n')
@@ -562,13 +547,10 @@ static void DEH_LoadDehackedFile(MYFILE *f, boolean mainfile)
 					}
 
 					if (clearall || fastcmp(word2, "UNLOCKABLES"))
-						memset(&unlockables, 0, sizeof(unlockables));
+						clear_unlockables();
 
 					if (clearall || fastcmp(word2, "EMBLEMS"))
-					{
-						memset(&emblemlocations, 0, sizeof(emblemlocations));
-						numemblems = 0;
-					}
+						clear_emblems();
 
 					if (clearall || fastcmp(word2, "EXTRAEMBLEMS"))
 					{
@@ -645,25 +627,3 @@ void DEH_LoadDehackedLump(lumpnum_t lumpnum)
 {
 	DEH_LoadDehackedLumpPwad(WADFILENUM(lumpnum),LUMPNUM(lumpnum), false);
 }
-
-void DEH_Check(void)
-{
-#if defined(_DEBUG) || defined(PARANOIA)
-	const size_t dehstates = sizeof(STATE_LIST)/sizeof(const char*);
-	const size_t dehmobjs  = sizeof(MOBJTYPE_LIST)/sizeof(const char*);
-	const size_t dehpowers = sizeof(POWERS_LIST)/sizeof(const char*);
-	const size_t dehcolors = sizeof(COLOR_ENUMS)/sizeof(const char*);
-
-	if (dehstates != S_FIRSTFREESLOT)
-		I_Error("You forgot to update the Dehacked states list, you dolt!\n(%d states defined, versus %s in the Dehacked list)\n", S_FIRSTFREESLOT, sizeu1(dehstates));
-
-	if (dehmobjs != MT_FIRSTFREESLOT)
-		I_Error("You forgot to update the Dehacked mobjtype list, you dolt!\n(%d mobj types defined, versus %s in the Dehacked list)\n", MT_FIRSTFREESLOT, sizeu1(dehmobjs));
-
-	if (dehpowers != NUMPOWERS)
-		I_Error("You forgot to update the Dehacked powers list, you dolt!\n(%d powers defined, versus %s in the Dehacked list)\n", NUMPOWERS, sizeu1(dehpowers));
-
-	if (dehcolors != SKINCOLOR_FIRSTFREESLOT)
-		I_Error("You forgot to update the Dehacked colors list, you dolt!\n(%d colors defined, versus %s in the Dehacked list)\n", SKINCOLOR_FIRSTFREESLOT, sizeu1(dehcolors));
-#endif
-}
diff --git a/src/dehacked.h b/src/dehacked.h
index d5256be23f0b05b9b51e80faf12823e3a43e0366..1b200e2466f58994bb4db317db2dd9908565d5e5 100644
--- a/src/dehacked.h
+++ b/src/dehacked.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -30,8 +30,6 @@ typedef enum
 void DEH_LoadDehackedLump(lumpnum_t lumpnum);
 void DEH_LoadDehackedLumpPwad(UINT16 wad, UINT16 lump, boolean mainfile);
 
-void DEH_Check(void);
-
 fixed_t get_number(const char *word);
 FUNCPRINTF void deh_warning(const char *first, ...);
 void deh_strlcpy(char *dst, const char *src, size_t size, const char *warntext);
diff --git a/src/doomdata.h b/src/doomdata.h
index b3f7f5c4dbcc4ea5ce9ee8ff1cdf34a1845cdafa..e317fec1b352e21ab571810d2911ffbf4c03f7f5 100644
--- a/src/doomdata.h
+++ b/src/doomdata.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/doomdef.h b/src/doomdef.h
index 52abc95972cf4a2ed4b57c1dc939654d84f32906..11ca80538a0014563eb5761107a8da9f4efa1d4d 100644
--- a/src/doomdef.h
+++ b/src/doomdef.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -100,7 +100,7 @@
 #include <sys/stat.h>
 #include <ctype.h>
 
-#if defined (_WIN32) || defined (__DJGPP__)
+#ifdef _WIN32
 #include <io.h>
 #endif
 
@@ -112,7 +112,7 @@
 //#define PARANOIA // do some tests that never fail but maybe
 // turn this on by make etc.. DEBUGMODE = 1 or use the Debug profile in the VC++ projects
 //#endif
-#if defined (_WIN32) || (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON) || defined (macintosh)
+#if defined (_WIN32) || defined (__unix__) || defined(__APPLE__) || defined (UNIXCOMMON) || defined (macintosh)
 #define LOGMESSAGES // write message in log.txt
 #endif
 
@@ -415,7 +415,7 @@ enum {
 };
 
 // Name of local directory for config files and savegames
-#if (((defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON)) && !defined (__CYGWIN__)) && !defined (__APPLE__)
+#if (defined (__unix__) || defined (UNIXCOMMON)) && !defined (__CYGWIN__) && !defined (__APPLE__)
 #define DEFAULTDIR ".srb2"
 #else
 #define DEFAULTDIR "srb2"
@@ -604,10 +604,6 @@ extern const char *compdate, *comptime, *comprevision, *compbranch;
 /// Experimental tweaks to analog mode. (Needs a lot of work before it's ready for primetime.)
 //#define REDSANALOG
 
-/// Backwards compatibility with musicslots.
-/// \note	You should leave this enabled unless you're working with a future SRB2 version.
-#define MUSICSLOT_COMPATIBILITY
-
 /// Experimental attempts at preventing MF_PAPERCOLLISION objects from getting stuck in walls.
 //#define PAPER_COLLISIONCORRECTION
 
diff --git a/src/doomstat.h b/src/doomstat.h
index 2d28b81af7f007b380e466242c2ff0e49c317f01..32669b68bdecbda94eea9cebd7564907149b4d14 100644
--- a/src/doomstat.h
+++ b/src/doomstat.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -337,9 +337,9 @@ typedef struct
 	fixed_t gravity;        ///< Map-wide gravity.
 
 	// Title card.
-	char ltzzpatch[8];      ///< Zig zag patch.
-	char ltzztext[8];       ///< Zig zag text.
-	char ltactdiamond[8];   ///< Act diamond.
+	char ltzzpatch[9];      ///< Zig zag patch.
+	char ltzztext[9];       ///< Zig zag text.
+	char ltactdiamond[9];   ///< Act diamond.
 
 	// Freed animals stuff.
 	UINT8 numFlickies;     ///< Internal. For freed flicky support.
@@ -496,7 +496,7 @@ extern UINT32 lastcustomtol;
 
 extern tic_t totalplaytime;
 
-extern UINT8 stagefailed;
+extern boolean stagefailed;
 
 // Emeralds stored as bits to throw savegame hackers off.
 extern UINT16 emeralds;
diff --git a/src/doomtype.h b/src/doomtype.h
index 7dfee0720d263bf568ba3cd9e5d15e9ef8a24227..3a57d90e81f25998e80fc7181cd1aa14df50bde3 100644
--- a/src/doomtype.h
+++ b/src/doomtype.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -54,17 +54,6 @@ typedef long ssize_t;
 		#define PDWORD_PTR PDWORD
 	#endif
 #endif
-#elif defined (__DJGPP__)
-#define UINT8 unsigned char
-#define SINT8 signed char
-
-#define UINT16 unsigned short int
-#define INT16 signed short int
-
-#define INT32 signed long
-#define UINT32 unsigned long
-#define INT64  signed long long
-#define UINT64 unsigned long long
 #else
 #define __STDC_LIMIT_MACROS
 #include <stdint.h>
@@ -108,7 +97,7 @@ typedef long ssize_t;
 	#define strncasecmp             strnicmp
 	#define strcasecmp              strcmpi
 #endif
-#if (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)
+#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 	#undef stricmp
 	#define stricmp(x,y) strcasecmp(x,y)
 	#undef strnicmp
@@ -136,7 +125,7 @@ char *strcasestr(const char *in, const char *what);
 	#endif
 #endif //macintosh
 
-#if defined (PC_DOS) || defined (_WIN32) || defined (__HAIKU__)
+#if defined (_WIN32) || defined (__HAIKU__)
 #define HAVE_DOSSTR_FUNCS
 #endif
 
diff --git a/src/endian.h b/src/endian.h
index 24d8e35cd541f88bc9975f582f0e7c3d503a7ff8..e78204e723a43715cd7182b6aaebf59e61ee4358 100644
--- a/src/endian.h
+++ b/src/endian.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/f_finale.c b/src/f_finale.c
index b23ab4f7a834039c35947a75fa05298805603484..bfba7cf9614a23e9313b86df49d35f4ab7219216 100644
--- a/src/f_finale.c
+++ b/src/f_finale.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1138,6 +1138,7 @@ static const char *credits[] = {
 	"Iestyn \"Monster Iestyn\" Jealous",
 	"William \"GuyWithThePie\" Kloppenberg",
 	"Alice \"Alacroix\" de Lemos",
+	"Logan \"Hyperchaotix\" McCloud",
 	"Alexander \"DrTapeworm\" Moench-Ford",
 	"Andrew \"Senku Niola\" Moran",
 	"\"MotorRoach\"",
@@ -2545,28 +2546,28 @@ static void F_UnloadAlacroixGraphics(SINT8 oldttscale)
 	oldttscale--; // zero-based index
 	for (i = 0; i < TTMAX_ALACROIX; i++)
 	{
-		if(ttembl[oldttscale][i]) { Z_Free(ttembl[oldttscale][i]); ttembl[oldttscale][i] = 0; }
-		if(ttribb[oldttscale][i]) { Z_Free(ttribb[oldttscale][i]); ttribb[oldttscale][i] = 0; }
-		if(ttsont[oldttscale][i]) { Z_Free(ttsont[oldttscale][i]); ttsont[oldttscale][i] = 0; }
-		if(ttrobo[oldttscale][i]) { Z_Free(ttrobo[oldttscale][i]); ttrobo[oldttscale][i] = 0; }
-		if(tttwot[oldttscale][i]) { Z_Free(tttwot[oldttscale][i]); tttwot[oldttscale][i] = 0; }
-		if(ttrbtx[oldttscale][i]) { Z_Free(ttrbtx[oldttscale][i]); ttrbtx[oldttscale][i] = 0; }
-		if(ttsoib[oldttscale][i]) { Z_Free(ttsoib[oldttscale][i]); ttsoib[oldttscale][i] = 0; }
-		if(ttsoif[oldttscale][i]) { Z_Free(ttsoif[oldttscale][i]); ttsoif[oldttscale][i] = 0; }
-		if(ttsoba[oldttscale][i]) { Z_Free(ttsoba[oldttscale][i]); ttsoba[oldttscale][i] = 0; }
-		if(ttsobk[oldttscale][i]) { Z_Free(ttsobk[oldttscale][i]); ttsobk[oldttscale][i] = 0; }
-		if(ttsodh[oldttscale][i]) { Z_Free(ttsodh[oldttscale][i]); ttsodh[oldttscale][i] = 0; }
-		if(tttaib[oldttscale][i]) { Z_Free(tttaib[oldttscale][i]); tttaib[oldttscale][i] = 0; }
-		if(tttaif[oldttscale][i]) { Z_Free(tttaif[oldttscale][i]); tttaif[oldttscale][i] = 0; }
-		if(tttaba[oldttscale][i]) { Z_Free(tttaba[oldttscale][i]); tttaba[oldttscale][i] = 0; }
-		if(tttabk[oldttscale][i]) { Z_Free(tttabk[oldttscale][i]); tttabk[oldttscale][i] = 0; }
-		if(tttabt[oldttscale][i]) { Z_Free(tttabt[oldttscale][i]); tttabt[oldttscale][i] = 0; }
-		if(tttaft[oldttscale][i]) { Z_Free(tttaft[oldttscale][i]); tttaft[oldttscale][i] = 0; }
-		if(ttknib[oldttscale][i]) { Z_Free(ttknib[oldttscale][i]); ttknib[oldttscale][i] = 0; }
-		if(ttknif[oldttscale][i]) { Z_Free(ttknif[oldttscale][i]); ttknif[oldttscale][i] = 0; }
-		if(ttknba[oldttscale][i]) { Z_Free(ttknba[oldttscale][i]); ttknba[oldttscale][i] = 0; }
-		if(ttknbk[oldttscale][i]) { Z_Free(ttknbk[oldttscale][i]); ttknbk[oldttscale][i] = 0; }
-		if(ttkndh[oldttscale][i]) { Z_Free(ttkndh[oldttscale][i]); ttkndh[oldttscale][i] = 0; }
+		if(ttembl[oldttscale][i]) { Patch_Free(ttembl[oldttscale][i]); ttembl[oldttscale][i] = 0; }
+		if(ttribb[oldttscale][i]) { Patch_Free(ttribb[oldttscale][i]); ttribb[oldttscale][i] = 0; }
+		if(ttsont[oldttscale][i]) { Patch_Free(ttsont[oldttscale][i]); ttsont[oldttscale][i] = 0; }
+		if(ttrobo[oldttscale][i]) { Patch_Free(ttrobo[oldttscale][i]); ttrobo[oldttscale][i] = 0; }
+		if(tttwot[oldttscale][i]) { Patch_Free(tttwot[oldttscale][i]); tttwot[oldttscale][i] = 0; }
+		if(ttrbtx[oldttscale][i]) { Patch_Free(ttrbtx[oldttscale][i]); ttrbtx[oldttscale][i] = 0; }
+		if(ttsoib[oldttscale][i]) { Patch_Free(ttsoib[oldttscale][i]); ttsoib[oldttscale][i] = 0; }
+		if(ttsoif[oldttscale][i]) { Patch_Free(ttsoif[oldttscale][i]); ttsoif[oldttscale][i] = 0; }
+		if(ttsoba[oldttscale][i]) { Patch_Free(ttsoba[oldttscale][i]); ttsoba[oldttscale][i] = 0; }
+		if(ttsobk[oldttscale][i]) { Patch_Free(ttsobk[oldttscale][i]); ttsobk[oldttscale][i] = 0; }
+		if(ttsodh[oldttscale][i]) { Patch_Free(ttsodh[oldttscale][i]); ttsodh[oldttscale][i] = 0; }
+		if(tttaib[oldttscale][i]) { Patch_Free(tttaib[oldttscale][i]); tttaib[oldttscale][i] = 0; }
+		if(tttaif[oldttscale][i]) { Patch_Free(tttaif[oldttscale][i]); tttaif[oldttscale][i] = 0; }
+		if(tttaba[oldttscale][i]) { Patch_Free(tttaba[oldttscale][i]); tttaba[oldttscale][i] = 0; }
+		if(tttabk[oldttscale][i]) { Patch_Free(tttabk[oldttscale][i]); tttabk[oldttscale][i] = 0; }
+		if(tttabt[oldttscale][i]) { Patch_Free(tttabt[oldttscale][i]); tttabt[oldttscale][i] = 0; }
+		if(tttaft[oldttscale][i]) { Patch_Free(tttaft[oldttscale][i]); tttaft[oldttscale][i] = 0; }
+		if(ttknib[oldttscale][i]) { Patch_Free(ttknib[oldttscale][i]); ttknib[oldttscale][i] = 0; }
+		if(ttknif[oldttscale][i]) { Patch_Free(ttknif[oldttscale][i]); ttknif[oldttscale][i] = 0; }
+		if(ttknba[oldttscale][i]) { Patch_Free(ttknba[oldttscale][i]); ttknba[oldttscale][i] = 0; }
+		if(ttknbk[oldttscale][i]) { Patch_Free(ttknbk[oldttscale][i]); ttknbk[oldttscale][i] = 0; }
+		if(ttkndh[oldttscale][i]) { Patch_Free(ttkndh[oldttscale][i]); ttkndh[oldttscale][i] = 0; }
 	}
 	ttloaded[oldttscale] = false;
 }
diff --git a/src/f_finale.h b/src/f_finale.h
index b3abf1778408a43e54fe310d28d5410f821f98da..4aa2c3f05b121a17c4fcfe7c4163e4b1db274415 100644
--- a/src/f_finale.h
+++ b/src/f_finale.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/f_wipe.c b/src/f_wipe.c
index 6afb8a6a7934709c90b1428fcd5f5a6f55d54c20..7526aeca36f6bd94cd8179c79fc7be299d395e40 100644
--- a/src/f_wipe.c
+++ b/src/f_wipe.c
@@ -3,7 +3,7 @@
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 2013-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/g_demo.c b/src/g_demo.c
index 5bfe2684c8b8164a6b9d3ad8678ce41800bbc551..c736108689f820c557b7759fe35b74d7aac6ba35 100644
--- a/src/g_demo.c
+++ b/src/g_demo.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/g_demo.h b/src/g_demo.h
index df25042c48030402622a71a611c8a7f2a53649e7..73cf273582ff1baeffcb2638ebe81654e6b8d70d 100644
--- a/src/g_demo.h
+++ b/src/g_demo.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/g_game.c b/src/g_game.c
index f4fe3f9535eebdb03dc9ae487e0728b8f9e9a35b..9ac576bef14943df671f4f0adb8f80e96790e982 100644
--- a/src/g_game.c
+++ b/src/g_game.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -169,7 +169,7 @@ static boolean exitgame = false;
 static boolean retrying = false;
 static boolean retryingmodeattack = false;
 
-UINT8 stagefailed; // Used for GEMS BONUS? Also to see if you beat the stage.
+boolean stagefailed = false; // Used for GEMS BONUS? Also to see if you beat the stage.
 
 UINT16 emeralds;
 INT32 luabanks[NUM_LUABANKS];
@@ -1678,7 +1678,7 @@ void G_BuildTiccmd(ticcmd_t *cmd, INT32 realtics, UINT8 ssplayer)
 	// At this point, cmd doesn't contain the final angle yet,
 	// So we need to temporarily transform it so Lua scripters
 	// don't need to handle it differently than in other hooks.
-	if (gamestate == GS_LEVEL)
+	if (addedtogame && gamestate == GS_LEVEL)
 	{
 		INT16 extra = ticcmd_oldangleturn[forplayer] - player->oldrelangleturn;
 		INT16 origangle = cmd->angleturn;
@@ -2291,14 +2291,21 @@ void G_Ticker(boolean run)
 	{
 		if (playeringame[i])
 		{
+			INT16 received;
+
 			G_CopyTiccmd(&players[i].cmd, &netcmds[buf][i], 1);
 
+			received = (players[i].cmd.angleturn & TICCMD_RECEIVED);
+
 			players[i].angleturn += players[i].cmd.angleturn - players[i].oldrelangleturn;
 			players[i].oldrelangleturn = players[i].cmd.angleturn;
 			if (P_ControlStyle(&players[i]) == CS_LMAOGALOG)
 				P_ForceLocalAngle(&players[i], players[i].angleturn << 16);
 			else
 				players[i].cmd.angleturn = players[i].angleturn;
+
+			players[i].cmd.angleturn &= ~TICCMD_RECEIVED;
+			players[i].cmd.angleturn |= received;
 		}
 	}
 
@@ -3500,6 +3507,7 @@ tolinfo_t TYPEOFLEVEL[NUMTOLNAMES] = {
 	{"MARIO",TOL_MARIO},
 	{"NIGHTS",TOL_NIGHTS},
 	{"OLDBRAK",TOL_ERZ3},
+	{"ERZ3",TOL_ERZ3},
 
 	{"XMAS",TOL_XMAS},
 	{"CHRISTMAS",TOL_XMAS},
@@ -3735,7 +3743,7 @@ static void G_UpdateVisited(void)
 	// Update visitation flags?
 	if ((!modifiedgame || savemoddata) // Not modified
 		&& !multiplayer && !demoplayback && (gametype == GT_COOP) // SP/RA/NiGHTS mode
-		&& !(spec && stagefailed)) // Not failed the special stage
+		&& !stagefailed) // Did not fail the stage
 	{
 		UINT8 earnedEmblems;
 
@@ -3920,12 +3928,13 @@ static void G_DoCompleted(void)
 	{
 		token--;
 
-		for (i = 0; i < 7; i++)
-			if (!(emeralds & (1<<i)))
-			{
-				nextmap = ((netgame || multiplayer) ? smpstage_start : sstage_start) + i - 1; // to special stage!
-				break;
-			}
+		if (!nextmapoverride)
+			for (i = 0; i < 7; i++)
+				if (!(emeralds & (1<<i)))
+				{
+					nextmap = ((netgame || multiplayer) ? smpstage_start : sstage_start) + i - 1; // to special stage!
+					break;
+				}
 
 		if (i == 7)
 		{
@@ -3956,7 +3965,7 @@ static void G_DoCompleted(void)
 	// If the current gametype has no intermission screen set, then don't start it.
 	Y_DetermineIntermissionType();
 
-	if ((skipstats && !modeattacking) || (spec && modeattacking && stagefailed) || (intertype == int_none))
+	if ((skipstats && !modeattacking) || (modeattacking && stagefailed) || (intertype == int_none))
 	{
 		G_UpdateVisited();
 		G_HandleSaveLevel();
@@ -3966,6 +3975,7 @@ static void G_DoCompleted(void)
 	{
 		G_SetGamestate(GS_INTERMISSION);
 		Y_StartIntermission();
+		Y_LoadIntermissionData();
 		G_UpdateVisited();
 		G_HandleSaveLevel();
 	}
@@ -3987,8 +3997,15 @@ void G_AfterIntermission(void)
 
 	HU_ClearCEcho();
 
-	if ((gametyperules & GTR_CUTSCENES) && mapheaderinfo[gamemap-1]->cutscenenum && !modeattacking && skipstats <= 1 && (gamecomplete || !(marathonmode & MA_NOCUTSCENES))) // Start a custom cutscene.
+	if ((gametyperules & GTR_CUTSCENES) && mapheaderinfo[gamemap-1]->cutscenenum
+		&& !modeattacking
+		&& skipstats <= 1
+		&& (gamecomplete || !(marathonmode & MA_NOCUTSCENES))
+		&& stagefailed == false)
+	{
+		// Start a custom cutscene.
 		F_StartCustomCutscene(mapheaderinfo[gamemap-1]->cutscenenum-1, false, false);
+	}
 	else
 	{
 		if (nextmap < 1100-1)
@@ -4610,6 +4627,9 @@ void G_SaveGameOver(UINT32 slot, boolean modifylives)
 		UINT8 *end_p = savebuffer + length;
 		UINT8 *lives_p;
 		SINT8 pllives;
+#ifdef NEWSKINSAVES
+		INT16 backwardsCompat = 0;
+#endif
 
 		save_p = savebuffer;
 		// Version check
@@ -4628,9 +4648,23 @@ void G_SaveGameOver(UINT32 slot, boolean modifylives)
 
 		// P_UnArchivePlayer()
 		CHECKPOS
-		(void)READUINT16(save_p);
+#ifdef NEWSKINSAVES
+		backwardsCompat = READUINT16(save_p);
 		CHECKPOS
 
+		if (backwardsCompat == NEWSKINSAVES) // New save, read skin names
+#endif
+		{
+			char ourSkinName[SKINNAMESIZE+1];
+			char botSkinName[SKINNAMESIZE+1];
+
+			READSTRINGN(save_p, ourSkinName, SKINNAMESIZE);
+			CHECKPOS
+
+			READSTRINGN(save_p, botSkinName, SKINNAMESIZE);
+			CHECKPOS
+		}
+
 		WRITEUINT8(save_p, numgameovers);
 		CHECKPOS
 
diff --git a/src/g_game.h b/src/g_game.h
index 744d6755abd35dc0765ec2174e1cfed94c2b15b8..98336ad44d66fc324edd090246d5a3e0cf3acf32 100644
--- a/src/g_game.h
+++ b/src/g_game.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/g_input.c b/src/g_input.c
index d3c21e774c4359d4f2433379dcbbe6e7fdc79436..357081e1dd5189f86d23a418778106325c85aa37 100644
--- a/src/g_input.c
+++ b/src/g_input.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/g_input.h b/src/g_input.h
index ce38f6ba9d68a623b880361d868aeebdd18eb135..609141825bc6df6699736130fd0941d959d8b929 100644
--- a/src/g_input.h
+++ b/src/g_input.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/g_state.h b/src/g_state.h
index e364c5a35b62c323464783d518bf266b2abe4185..589dc6361705747ad0da81fddf79cbf327849228 100644
--- a/src/g_state.h
+++ b/src/g_state.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/hardware/hw_batching.c b/src/hardware/hw_batching.c
index fb3417158a76a53abd38698da07425541ffddb02..0ac33d1361d2a4bf92070a9d944c1bfeab9cd980 100644
--- a/src/hardware/hw_batching.c
+++ b/src/hardware/hw_batching.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -137,6 +137,8 @@ static int comparePolygons(const void *p1, const void *p2)
 	PolygonArrayEntry* poly2 = &polygonArray[index2];
 	int diff;
 	INT64 diff64;
+	UINT32 downloaded1 = 0;
+	UINT32 downloaded2 = 0;
 
 	int shader1 = poly1->shader;
 	int shader2 = poly2->shader;
@@ -152,7 +154,11 @@ static int comparePolygons(const void *p1, const void *p2)
 	if (shader1 == -1 && shader2 == -1)
 		return index1 - index2;
 
-	diff64 = poly1->texture - poly2->texture;
+	if (poly1->texture)
+		downloaded1 = poly1->texture->downloaded; // there should be a opengl texture name here, usable for comparisons
+	if (poly2->texture)
+		downloaded2 = poly2->texture->downloaded;
+	diff64 = downloaded1 - downloaded2;
 	if (diff64 != 0) return diff64;
 
 	diff = poly1->polyFlags - poly2->polyFlags;
@@ -184,16 +190,21 @@ static int comparePolygonsNoShaders(const void *p1, const void *p2)
 
 	GLMipmap_t *texture1 = poly1->texture;
 	GLMipmap_t *texture2 = poly2->texture;
+	UINT32 downloaded1 = 0;
+	UINT32 downloaded2 = 0;
 	if (poly1->polyFlags & PF_NoTexture || poly1->horizonSpecial)
 		texture1 = NULL;
 	if (poly2->polyFlags & PF_NoTexture || poly2->horizonSpecial)
 		texture2 = NULL;
-	diff64 = texture1 - texture2;
-	if (diff64 != 0) return diff64;
-
+	if (texture1)
+		downloaded1 = texture1->downloaded; // there should be a opengl texture name here, usable for comparisons
+	if (texture2)
+		downloaded2 = texture2->downloaded;
 	// skywalls and horizon lines must retain their order for horizon lines to work
-	if (texture1 == NULL && texture2 == NULL)
+	if (!texture1 && !texture2)
 		return index1 - index2;
+	diff64 = downloaded1 - downloaded2;
+	if (diff64 != 0) return diff64;
 
 	diff = poly1->polyFlags - poly2->polyFlags;
 	if (diff != 0) return diff;
diff --git a/src/hardware/hw_batching.h b/src/hardware/hw_batching.h
index 42291a0dfd261731ce6d40c24e06de63260dc132..9ccc7de3df503a12211b41d871c2734af70b0bf6 100644
--- a/src/hardware/hw_batching.h
+++ b/src/hardware/hw_batching.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/hardware/hw_cache.c b/src/hardware/hw_cache.c
index 43fdc89f080bf2465747e698a96bc23a73c4aaf0..317efd320e749fb4c60e2d5ab36a044d3543a699 100644
--- a/src/hardware/hw_cache.c
+++ b/src/hardware/hw_cache.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -866,7 +866,7 @@ static void HWR_CacheTextureAsFlat(GLMipmap_t *grMipmap, INT32 texturenum)
 }
 
 // Download a Doom 'flat' to the hardware cache and make it ready for use
-void HWR_LiterallyGetFlat(lumpnum_t flatlumpnum)
+void HWR_GetRawFlat(lumpnum_t flatlumpnum)
 {
 	GLMipmap_t *grmip;
 	patch_t *patch;
@@ -895,7 +895,7 @@ void HWR_GetLevelFlat(levelflat_t *levelflat)
 		return;
 
 	if (levelflat->type == LEVELFLAT_FLAT)
-		HWR_LiterallyGetFlat(levelflat->u.flat.lumpnum);
+		HWR_GetRawFlat(levelflat->u.flat.lumpnum);
 	else if (levelflat->type == LEVELFLAT_TEXTURE)
 	{
 		GLMapTexture_t *grtex;
@@ -934,15 +934,17 @@ void HWR_GetLevelFlat(levelflat_t *levelflat)
 #ifndef NO_PNG_LUMPS
 	else if (levelflat->type == LEVELFLAT_PNG)
 	{
-		INT32 pngwidth = 0, pngheight = 0;
 		GLMipmap_t *mipmap = levelflat->mipmap;
-		UINT8 *flat;
-		size_t size;
 
 		// Cache the picture.
-		if (!levelflat->picture)
+		if (!levelflat->mippic)
 		{
-			levelflat->picture = Picture_PNGConvert(W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_CACHE), PICFMT_FLAT, &pngwidth, &pngheight, NULL, NULL, W_LumpLength(levelflat->u.flat.lumpnum), NULL, 0);
+			INT32 pngwidth = 0, pngheight = 0;
+			void *pic = Picture_PNGConvert(W_CacheLumpNum(levelflat->u.flat.lumpnum, PU_CACHE), PICFMT_FLAT, &pngwidth, &pngheight, NULL, NULL, W_LumpLength(levelflat->u.flat.lumpnum), NULL, 0);
+
+			Z_ChangeTag(pic, PU_LEVEL);
+			Z_SetUser(pic, &levelflat->mippic);
+
 			levelflat->width = (UINT16)pngwidth;
 			levelflat->height = (UINT16)pngheight;
 		}
@@ -950,7 +952,7 @@ void HWR_GetLevelFlat(levelflat_t *levelflat)
 		// Make the mipmap.
 		if (mipmap == NULL)
 		{
-			mipmap = Z_Calloc(sizeof(GLMipmap_t), PU_LEVEL, NULL);
+			mipmap = Z_Calloc(sizeof(GLMipmap_t), PU_STATIC, NULL);
 			mipmap->format = GL_TEXFMT_P_8;
 			mipmap->flags = TF_WRAPXY|TF_CHROMAKEYED;
 			levelflat->mipmap = mipmap;
@@ -958,17 +960,22 @@ void HWR_GetLevelFlat(levelflat_t *levelflat)
 
 		if (!mipmap->data && !mipmap->downloaded)
 		{
+			UINT8 *flat;
+			size_t size;
+
+			if (levelflat->mippic == NULL)
+				I_Error("HWR_GetLevelFlat: levelflat->mippic == NULL");
+
 			mipmap->width = levelflat->width;
 			mipmap->height = levelflat->height;
+
 			size = (mipmap->width * mipmap->height);
 			flat = Z_Malloc(size, PU_LEVEL, &mipmap->data);
-			if (levelflat->picture == NULL)
-				I_Error("HWR_GetLevelFlat: levelflat->picture == NULL");
-			M_Memcpy(flat, levelflat->picture, size);
+			M_Memcpy(flat, levelflat->mippic, size);
 		}
 
 		// Tell the hardware driver to bind the current texture to the flat's mipmap
-		HWD.pfnSetTexture(mipmap);
+		HWR_SetCurrentTexture(mipmap);
 	}
 #endif
 	else // set no texture
@@ -1084,7 +1091,6 @@ void HWR_UnlockCachedPatch(GLPatch_t *gpatch)
 		return;
 
 	Z_ChangeTag(gpatch->mipmap->data, PU_HWRCACHE_UNLOCKED);
-	Z_ChangeTag(gpatch, PU_HWRPATCHINFO_UNLOCKED);
 }
 
 static const INT32 picmode2GR[] =
diff --git a/src/hardware/hw_data.h b/src/hardware/hw_data.h
index 11e41b18ac335a961c6fcff0d1b3dfff70659f49..5aba6a2a9b14e27d98fa7f57c6847826c8e791eb 100644
--- a/src/hardware/hw_data.h
+++ b/src/hardware/hw_data.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -48,44 +48,43 @@ struct GLColormap_s
 typedef struct GLColormap_s GLColormap_t;
 
 
-// data holds the address of the graphics data cached in heap memory
-//                NULL if the texture is not in Doom heap cache.
+// Texture information (misleadingly named "mipmap" all over the code.)
+// The *data pointer holds the address of the graphics data cached in heap memory.
+// NULL if the texture is not in SRB2's heap cache.
 struct GLMipmap_s
 {
-	// for TexDownloadMipMap
+	// for UpdateTexture
 	GLTextureFormat_t     format;
 	void                 *data;
 
 	UINT32                flags;
 	UINT16                height;
 	UINT16                width;
-	UINT32                downloaded;     // The GPU has this texture.
+	UINT32                downloaded; // The GPU has this texture.
 
 	struct GLMipmap_s    *nextcolormap;
 	struct GLColormap_s  *colormap;
-
-	struct GLMipmap_s    *nextmipmap; // Linked list of all textures
 };
 typedef struct GLMipmap_s GLMipmap_t;
 
 
 //
-// Doom texture info, as cached for hardware rendering
+// Level textures, as cached for hardware rendering.
 //
 struct GLMapTexture_s
 {
 	GLMipmap_t  mipmap;
-	float       scaleX;             //used for scaling textures on walls
+	float       scaleX; // Used for scaling textures on walls
 	float       scaleY;
 };
 typedef struct GLMapTexture_s GLMapTexture_t;
 
 
-// a cached patch as converted to hardware format
+// Patch information for the hardware renderer.
 struct GLPatch_s
 {
-	float               max_s,max_t;
-	GLMipmap_t          *mipmap;
+	GLMipmap_t *mipmap; // Texture data. Allocated whenever the patch is.
+	float       max_s, max_t;
 };
 typedef struct GLPatch_s GLPatch_t;
 
diff --git a/src/hardware/hw_defs.h b/src/hardware/hw_defs.h
index a782762a38c46dbb4161468b43b3041d215e8d2e..8df9b8916b2e563d7c1eebb16511b222a636a312 100644
--- a/src/hardware/hw_defs.h
+++ b/src/hardware/hw_defs.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -216,28 +216,28 @@ enum EPolyFlags
 	PF_Masked           = 0x00000001,   // Poly is alpha scaled and 0 alpha pixels are discarded (holes in texture)
 	PF_Translucent      = 0x00000002,   // Poly is transparent, alpha = level of transparency
 	PF_Environment      = 0x00000004,   // Poly should be drawn environment mapped. (Hurdler: used for text drawing)
-	PF_Additive         = 0x00000008,   // Additive color blending
-	PF_AdditiveSource   = 0x00000010,   // Source blending factor is additive. This is the opposite of regular additive blending.
-	PF_Subtractive      = 0x00000020,   // Subtractive color blending
-	PF_ReverseSubtract  = 0x00000040,   // Reverse subtract, used in wall splats (decals)
-	PF_Multiplicative   = 0x00000080,   // Multiplicative color blending
+	PF_Additive         = 0x00000008,   // Source blending factor is additive.
+	PF_Subtractive      = 0x00000010,   // Subtractive color blending
+	PF_ReverseSubtract  = 0x00000020,   // Reverse subtract, used in wall splats (decals)
+	PF_Multiplicative   = 0x00000040,   // Multiplicative color blending
 	PF_Fog              = 0x20000000,   // Fog blocks
 	PF_NoAlphaTest      = 0x40000000,   // Disables alpha testing
-	PF_Blending         = (PF_Masked|PF_Translucent|PF_Environment|PF_Additive|PF_AdditiveSource|PF_Subtractive|PF_ReverseSubtract|PF_Multiplicative|PF_Fog) & ~PF_NoAlphaTest,
+	PF_Blending         = (PF_Masked|PF_Translucent|PF_Environment|PF_Additive|PF_Subtractive|PF_ReverseSubtract|PF_Multiplicative|PF_Fog) & ~PF_NoAlphaTest,
 
 	// other flag bits
 	PF_Occlude          = 0x00000100,   // Updates the depth buffer
 	PF_NoDepthTest      = 0x00000200,   // Disables the depth test mode
 	PF_Invisible        = 0x00000400,   // Disables write to color buffer
 	PF_Decal            = 0x00000800,   // Enables polygon offset
-	PF_Modulated        = 0x00001000,   // Modulation (multiply output with constant ARGB)
+	PF_Modulated        = 0x00001000,   // Modulation (multiply output with constant RGBA)
 	                                    // When set, pass the color constant into the FSurfaceInfo -> PolyColor
 	PF_NoTexture        = 0x00002000,   // Disables texturing
 	PF_Corona           = 0x00004000,   // Tells the renderer we are drawing a corona
-	PF_Ripple           = 0x00008000,   // Water effect shader
+	PF_ColorMapped      = 0x00008000,   // Surface has "tint" and "fade" colors, which are sent as uniforms to a shader.
 	PF_RemoveYWrap      = 0x00010000,   // Forces clamp texture on Y
 	PF_ForceWrapX       = 0x00020000,   // Forces repeat texture on X
-	PF_ForceWrapY       = 0x00040000    // Forces repeat texture on Y
+	PF_ForceWrapY       = 0x00040000,   // Forces repeat texture on Y
+	PF_Ripple           = 0x00100000    // Water ripple effect. The current backend doesn't use it for anything.
 };
 
 
@@ -255,9 +255,17 @@ enum ETextureFlags
 	TF_TRANSPARENT = 0x00000040,        // texture with some alpha == 0
 };
 
-typedef struct GLMipmap_s FTextureInfo;
+struct FTextureInfo
+{
+	UINT32 width, height;
+	UINT32 downloaded;
+	UINT32 format;
+
+	struct GLMipmap_s *texture;
+	struct FTextureInfo *prev, *next;
+};
+typedef struct FTextureInfo FTextureInfo;
 
-// jimita 14032019
 struct FLightInfo
 {
 	FUINT			light_level;
@@ -273,7 +281,7 @@ struct FSurfaceInfo
 	RGBA_t			PolyColor;
 	RGBA_t			TintColor;
 	RGBA_t			FadeColor;
-	FLightInfo		LightInfo;	// jimita 14032019
+	FLightInfo		LightInfo;
 };
 typedef struct FSurfaceInfo FSurfaceInfo;
 
diff --git a/src/hardware/hw_draw.c b/src/hardware/hw_draw.c
index c5d362520a56ea249aadade297ae7f4f68a232df..e83aff0d778989a36bf3367c51600228b8a14189 100644
--- a/src/hardware/hw_draw.c
+++ b/src/hardware/hw_draw.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -437,18 +437,9 @@ void HWR_DrawCroppedPatch(patch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscale,
 
 		if (!(option & V_SCALEPATCHMASK))
 		{
-			// if it's meant to cover the whole screen, black out the rest (ONLY IF TOP LEFT ISN'T TRANSPARENT)
-			// cx and cy are possibly *slightly* off from float maths
-			// This is done before here compared to software because we directly alter cx and cy to centre
-			if (cx >= -0.1f && cx <= 0.1f && gpatch->width == BASEVIDWIDTH && cy >= -0.1f && cy <= 0.1f && gpatch->height == BASEVIDHEIGHT)
-			{
-				const column_t *column = (const column_t *)((const UINT8 *)(gpatch->columns) + (gpatch->columnofs[0]));
-				if (!column->topdelta)
-				{
-					const UINT8 *source = (const UINT8 *)(column) + 3;
-					HWR_DrawFill(0, 0, BASEVIDWIDTH, BASEVIDHEIGHT, (column->topdelta == 0xff ? 31 : source[0]));
-				}
-			}
+			// if it's meant to cover the whole screen, black out the rest
+			// no the patch is cropped do not do this ever
+
 			// centre screen
 			if (fabsf((float)vid.width - (float)BASEVIDWIDTH * dupx) > 1.0E-36f)
 			{
@@ -470,11 +461,11 @@ void HWR_DrawCroppedPatch(patch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscale,
 	fwidth = w;
 	fheight = h;
 
-	if (fwidth > gpatch->width)
-		fwidth = gpatch->width;
+	if (sx + w > gpatch->width)
+		fwidth = gpatch->width - sx;
 
-	if (fheight > gpatch->height)
-		fheight = gpatch->height;
+	if (sy + h > gpatch->height)
+		fheight = gpatch->height - sy;
 
 	if (pscale != FRACUNIT)
 	{
@@ -506,13 +497,13 @@ void HWR_DrawCroppedPatch(patch_t *gpatch, fixed_t x, fixed_t y, fixed_t pscale,
 
 	v[0].s = v[3].s = ((sx)/(float)(gpatch->width))*hwrPatch->max_s;
 	if (sx + w > gpatch->width)
-		v[2].s = v[1].s = hwrPatch->max_s - ((sx+w)/(float)(gpatch->width))*hwrPatch->max_s;
+		v[2].s = v[1].s = hwrPatch->max_s;
 	else
 		v[2].s = v[1].s = ((sx+w)/(float)(gpatch->width))*hwrPatch->max_s;
 
 	v[0].t = v[1].t = ((sy)/(float)(gpatch->height))*hwrPatch->max_t;
 	if (sy + h > gpatch->height)
-		v[2].t = v[3].t = hwrPatch->max_t - ((sy+h)/(float)(gpatch->height))*hwrPatch->max_t;
+		v[2].t = v[3].t = hwrPatch->max_t;
 	else
 		v[2].t = v[3].t = ((sy+h)/(float)(gpatch->height))*hwrPatch->max_t;
 
@@ -639,7 +630,7 @@ void HWR_DrawFlatFill (INT32 x, INT32 y, INT32 w, INT32 h, lumpnum_t flatlumpnum
 	v[0].t = v[1].t = (float)((y & flatflag)/dflatsize);
 	v[2].t = v[3].t = (float)(v[0].t + h/dflatsize);
 
-	HWR_LiterallyGetFlat(flatlumpnum);
+	HWR_GetRawFlat(flatlumpnum);
 
 	//Hurdler: Boris, the same comment as above... but maybe for pics
 	// it not a problem since they don't have any transparent pixel
diff --git a/src/hardware/hw_drv.h b/src/hardware/hw_drv.h
index 5a2e0e44eaeb13ffc0465403fdd606e2f556fe2e..d4a586d418de9f3da9a16d432690608b99961c8f 100644
--- a/src/hardware/hw_drv.h
+++ b/src/hardware/hw_drv.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -40,13 +40,12 @@ EXPORT void HWRAPI(DrawIndexedTriangles) (FSurfaceInfo *pSurf, FOutVector *pOutV
 EXPORT void HWRAPI(RenderSkyDome) (gl_sky_t *sky);
 EXPORT void HWRAPI(SetBlend) (FBITFIELD PolyFlags);
 EXPORT void HWRAPI(ClearBuffer) (FBOOLEAN ColorMask, FBOOLEAN DepthMask, FRGBAFloat *ClearColor);
-EXPORT void HWRAPI(SetTexture) (FTextureInfo *TexInfo);
-EXPORT void HWRAPI(UpdateTexture) (FTextureInfo *TexInfo);
-EXPORT void HWRAPI(DeleteTexture) (FTextureInfo *TexInfo);
+EXPORT void HWRAPI(SetTexture) (GLMipmap_t *TexInfo);
+EXPORT void HWRAPI(UpdateTexture) (GLMipmap_t *TexInfo);
+EXPORT void HWRAPI(DeleteTexture) (GLMipmap_t *TexInfo);
 EXPORT void HWRAPI(ReadRect) (INT32 x, INT32 y, INT32 width, INT32 height, INT32 dst_stride, UINT16 *dst_data);
 EXPORT void HWRAPI(GClipRect) (INT32 minx, INT32 miny, INT32 maxx, INT32 maxy, float nearclip);
 EXPORT void HWRAPI(ClearMipMapCache) (void);
-EXPORT void HWRAPI(ClearCacheList) (void);
 
 //Hurdler: added for backward compatibility
 EXPORT void HWRAPI(SetSpecialState) (hwdspecialstate_t IdState, INT32 Value);
@@ -69,7 +68,6 @@ EXPORT void HWRAPI(DrawScreenFinalTexture) (int width, int height);
 #define SCREENVERTS 10
 EXPORT void HWRAPI(PostImgRedraw) (float points[SCREENVERTS][SCREENVERTS][2]);
 
-// jimita
 EXPORT boolean HWRAPI(CompileShaders) (void);
 EXPORT void HWRAPI(CleanShaders) (void);
 EXPORT void HWRAPI(SetShader) (int type);
@@ -101,7 +99,6 @@ struct hwdriver_s
 	ReadRect            pfnReadRect;
 	GClipRect           pfnGClipRect;
 	ClearMipMapCache    pfnClearMipMapCache;
-	ClearCacheList      pfnClearCacheList;
 	SetSpecialState     pfnSetSpecialState;//Hurdler: added for backward compatibility
 	DrawModel           pfnDrawModel;
 	CreateModelVBOs     pfnCreateModelVBOs;
diff --git a/src/hardware/hw_glob.h b/src/hardware/hw_glob.h
index 87405d3d457080e1fccd86206ac2d0dfb9b97db4..37d77b467306b823cd36a9a1bdcb57500723cc2e 100644
--- a/src/hardware/hw_glob.h
+++ b/src/hardware/hw_glob.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -118,7 +118,7 @@ patch_t *HWR_GetPic(lumpnum_t lumpnum);
 
 GLMapTexture_t *HWR_GetTexture(INT32 tex);
 void HWR_GetLevelFlat(levelflat_t *levelflat);
-void HWR_LiterallyGetFlat(lumpnum_t flatlumpnum);
+void HWR_GetRawFlat(lumpnum_t flatlumpnum);
 
 void HWR_FreeTexture(patch_t *patch);
 void HWR_FreeTextureData(patch_t *patch);
diff --git a/src/hardware/hw_light.c b/src/hardware/hw_light.c
index 93c61f4e7f9d2357cd323555f41631d3bd17bb09..e83d9a6ec025143150754ab6910afed140b4fdcd 100644
--- a/src/hardware/hw_light.c
+++ b/src/hardware/hw_light.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -35,7 +35,7 @@
 
 #define DL_HIGH_QUALITY
 //#define STATICLIGHT  //Hurdler: TODO!
-#define LIGHTMAPFLAGS (PF_Modulated|PF_AdditiveSource)
+#define LIGHTMAPFLAGS (PF_Modulated|PF_Additive)
 
 #ifdef ALAM_LIGHTING
 static dynlights_t view_dynlights[2]; // 2 players in splitscreen mode
@@ -1056,7 +1056,7 @@ void HWR_DoCoronasLighting(FOutVector *outVerts, gl_vissprite_t *spr)
 
 		HWR_GetPic(coronalumpnum);  /// \todo use different coronas
 
-		HWD.pfnDrawPolygon (&Surf, light, 4, PF_Modulated | PF_AdditiveSource | PF_Corona | PF_NoDepthTest);
+		HWD.pfnDrawPolygon (&Surf, light, 4, PF_Modulated | PF_Additive | PF_Corona | PF_NoDepthTest);
 	}
 }
 #endif
@@ -1144,7 +1144,7 @@ void HWR_DrawCoronas(void)
 		light[3].y = cy+size*1.33f;
 		light[3].s = 0.0f;   light[3].t = 1.0f;
 
-		HWD.pfnDrawPolygon (&Surf, light, 4, PF_Modulated | PF_AdditiveSource | PF_NoDepthTest | PF_Corona);
+		HWD.pfnDrawPolygon (&Surf, light, 4, PF_Modulated | PF_Additive | PF_NoDepthTest | PF_Corona);
 	}
 }
 #endif
diff --git a/src/hardware/hw_light.h b/src/hardware/hw_light.h
index fed7db47f2a67e6b81f82bfe2e97048594ce43be..244cc921f567e63422868e64259b07f1cb5c0ac4 100644
--- a/src/hardware/hw_light.h
+++ b/src/hardware/hw_light.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index a7e37d231a1d6401f99203e11bc97b8161f1a46b..d413e3bbebff7d487f9756103631baf64d180822 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -173,6 +173,11 @@ boolean gl_shadersavailable = true;
 // Lighting
 // ==========================================================================
 
+static boolean HWR_UseShader(void)
+{
+	return (cv_glshaders.value && gl_shadersavailable);
+}
+
 void HWR_Lighting(FSurfaceInfo *Surface, INT32 light_level, extracolormap_t *colormap)
 {
 	RGBA_t poly_color, tint_color, fade_color;
@@ -182,7 +187,7 @@ void HWR_Lighting(FSurfaceInfo *Surface, INT32 light_level, extracolormap_t *col
 	fade_color.rgba = (colormap != NULL) ? (UINT32)colormap->fadergba : GL_DEFAULTFOG;
 
 	// Crappy backup coloring if you can't do shaders
-	if (!cv_glshaders.value || !gl_shadersavailable)
+	if (!HWR_UseShader())
 	{
 		// be careful, this may get negative for high lightlevel values.
 		float tint_alpha, fade_alpha;
@@ -362,16 +367,16 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 	float fflatwidth = 64.0f, fflatheight = 64.0f;
 	INT32 flatflag = 63;
 	boolean texflat = false;
-	float scrollx = 0.0f, scrolly = 0.0f;
+	float scrollx = 0.0f, scrolly = 0.0f, anglef = 0.0f;
 	angle_t angle = 0;
 	FSurfaceInfo    Surf;
-	fixed_t tempxsow, tempytow;
+	float tempxsow, tempytow;
 	pslope_t *slope = NULL;
 
 	static FOutVector *planeVerts = NULL;
 	static UINT16 numAllocedPlaneVerts = 0;
 
-	int shader;
+	INT32 shader = SHADER_DEFAULT;
 
 	// no convex poly were generated for this subsector
 	if (!xsub->planepoly)
@@ -499,24 +504,15 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 		}
 	}
 
-
 	if (angle) // Only needs to be done if there's an altered angle
 	{
+		tempxsow = flatxref;
+		tempytow = flatyref;
 
-		angle = (InvAngle(angle))>>ANGLETOFINESHIFT;
-
-		// This needs to be done so that it scrolls in a different direction after rotation like software
-		/*tempxsow = FLOAT_TO_FIXED(scrollx);
-		tempytow = FLOAT_TO_FIXED(scrolly);
-		scrollx = (FIXED_TO_FLOAT(FixedMul(tempxsow, FINECOSINE(angle)) - FixedMul(tempytow, FINESINE(angle))));
-		scrolly = (FIXED_TO_FLOAT(FixedMul(tempxsow, FINESINE(angle)) + FixedMul(tempytow, FINECOSINE(angle))));*/
+		anglef = ANG2RAD(InvAngle(angle));
 
-		// This needs to be done so everything aligns after rotation
-		// It would be done so that rotation is done, THEN the translation, but I couldn't get it to rotate AND scroll like software does
-		tempxsow = FLOAT_TO_FIXED(flatxref);
-		tempytow = FLOAT_TO_FIXED(flatyref);
-		flatxref = (FIXED_TO_FLOAT(FixedMul(tempxsow, FINECOSINE(angle)) - FixedMul(tempytow, FINESINE(angle))));
-		flatyref = (FIXED_TO_FLOAT(FixedMul(tempxsow, FINESINE(angle)) + FixedMul(tempytow, FINECOSINE(angle))));
+		flatxref = (tempxsow * cos(anglef)) - (tempytow * sin(anglef));
+		flatyref = (tempxsow * sin(anglef)) + (tempytow * cos(anglef));
 	}
 
 #define SETUP3DVERT(vert, vx, vy) {\
@@ -535,10 +531,10 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 		/* Need to rotate before translate */\
 		if (angle) /* Only needs to be done if there's an altered angle */\
 		{\
-			tempxsow = FLOAT_TO_FIXED(vert->s);\
-			tempytow = FLOAT_TO_FIXED(vert->t);\
-			vert->s = (FIXED_TO_FLOAT(FixedMul(tempxsow, FINECOSINE(angle)) - FixedMul(tempytow, FINESINE(angle))));\
-			vert->t = (FIXED_TO_FLOAT(FixedMul(tempxsow, FINESINE(angle)) + FixedMul(tempytow, FINECOSINE(angle))));\
+			tempxsow = vert->s;\
+			tempytow = vert->t;\
+			vert->s = (tempxsow * cos(anglef)) - (tempytow * sin(anglef));\
+			vert->t = (tempxsow * sin(anglef)) + (tempytow * cos(anglef));\
 		}\
 \
 		vert->x = (vx);\
@@ -568,12 +564,17 @@ static void HWR_RenderPlane(subsector_t *subsector, extrasubsector_t *xsub, bool
 	else
 		PolyFlags |= PF_Masked|PF_Modulated;
 
-	if (PolyFlags & PF_Fog)
-		shader = SHADER_FOG;	// fog shader
-	else if (PolyFlags & PF_Ripple)
-		shader = SHADER_WATER;	// water shader
-	else
-		shader = SHADER_FLOOR;	// floor shader
+	if (HWR_UseShader())
+	{
+		if (PolyFlags & PF_Fog)
+			shader = SHADER_FOG;
+		else if (PolyFlags & PF_Ripple)
+			shader = SHADER_WATER;
+		else
+			shader = SHADER_FLOOR;
+
+		PolyFlags |= PF_ColorMapped;
+	}
 
 	HWR_ProcessPolygon(&Surf, planeVerts, nrPlaneVerts, PolyFlags, shader, false);
 
@@ -702,10 +703,12 @@ static void HWR_RenderSkyPlane(extrasubsector_t *xsub, fixed_t fixedheight)
 
 #endif //doplanes
 
-FBITFIELD HWR_GetBlendModeFlag(INT32 ast)
+FBITFIELD HWR_GetBlendModeFlag(INT32 style)
 {
-	switch (ast)
+	switch (style)
 	{
+		case AST_TRANSLUCENT:
+			return PF_Translucent;
 		case AST_ADD:
 			return PF_Additive;
 		case AST_SUBTRACT:
@@ -715,10 +718,8 @@ FBITFIELD HWR_GetBlendModeFlag(INT32 ast)
 		case AST_MODULATE:
 			return PF_Multiplicative;
 		default:
-			return PF_Translucent;
+			return PF_Masked;
 	}
-
-	return 0;
 }
 
 UINT8 HWR_GetTranstableAlpha(INT32 transtablenum)
@@ -744,7 +745,7 @@ UINT8 HWR_GetTranstableAlpha(INT32 transtablenum)
 
 FBITFIELD HWR_SurfaceBlend(INT32 style, INT32 transtablenum, FSurfaceInfo *pSurf)
 {
-	if (!transtablenum)
+	if (!transtablenum || style <= AST_COPY || style >= AST_OVERLAY)
 	{
 		pSurf->PolyColor.s.alpha = 0xff;
 		return PF_Masked;
@@ -785,8 +786,17 @@ static void HWR_AddTransparentWall(FOutVector *wallVerts, FSurfaceInfo *pSurf, I
 //
 static void HWR_ProjectWall(FOutVector *wallVerts, FSurfaceInfo *pSurf, FBITFIELD blendmode, INT32 lightlevel, extracolormap_t *wallcolormap)
 {
+	INT32 shader = SHADER_DEFAULT;
+
 	HWR_Lighting(pSurf, lightlevel, wallcolormap);
-	HWR_ProcessPolygon(pSurf, wallVerts, 4, blendmode|PF_Modulated|PF_Occlude, SHADER_WALL, false); // wall shader
+
+	if (HWR_UseShader())
+	{
+		shader = SHADER_WALL;
+		blendmode |= PF_ColorMapped;
+	}
+
+	HWR_ProcessPolygon(pSurf, wallVerts, 4, blendmode|PF_Modulated|PF_Occlude, shader, false);
 }
 
 // ==========================================================================
@@ -831,7 +841,7 @@ static float HWR_ClipViewSegment(INT32 x, polyvertex_t *v1, polyvertex_t *v2)
 //
 // HWR_SplitWall
 //
-static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum, FSurfaceInfo* Surf, INT32 cutflag, ffloor_t *pfloor)
+static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum, FSurfaceInfo* Surf, INT32 cutflag, ffloor_t *pfloor, FBITFIELD polyflags)
 {
 	/* SoM: split up and light walls according to the
 	 lightlist. This may also include leaving out parts
@@ -969,11 +979,11 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
 		wallVerts[1].y = endbot;
 
 		if (cutflag & FF_FOG)
-			HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture, true, lightnum, colormap);
+			HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture|polyflags, true, lightnum, colormap);
 		else if (cutflag & FF_TRANSLUCENT)
-			HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent, false, lightnum, colormap);
+			HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent|polyflags, false, lightnum, colormap);
 		else
-			HWR_ProjectWall(wallVerts, Surf, PF_Masked, lightnum, colormap);
+			HWR_ProjectWall(wallVerts, Surf, PF_Masked|polyflags, lightnum, colormap);
 
 		top = bot;
 		endtop = endbot;
@@ -998,11 +1008,11 @@ static void HWR_SplitWall(sector_t *sector, FOutVector *wallVerts, INT32 texnum,
 	wallVerts[1].y = endbot;
 
 	if (cutflag & FF_FOG)
-		HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture, true, lightnum, colormap);
+		HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Fog|PF_NoTexture|polyflags, true, lightnum, colormap);
 	else if (cutflag & FF_TRANSLUCENT)
-		HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent, false, lightnum, colormap);
+		HWR_AddTransparentWall(wallVerts, Surf, texnum, PF_Translucent|polyflags, false, lightnum, colormap);
 	else
-		HWR_ProjectWall(wallVerts, Surf, PF_Masked, lightnum, colormap);
+		HWR_ProjectWall(wallVerts, Surf, PF_Masked|polyflags, lightnum, colormap);
 }
 
 // HWR_DrawSkyWall
@@ -1104,7 +1114,6 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 
 		SLOPEPARAMS(gl_backsector->c_slope, worldhigh, worldhighslope, gl_backsector->ceilingheight)
 		SLOPEPARAMS(gl_backsector->f_slope, worldlow,  worldlowslope,  gl_backsector->floorheight)
-#undef SLOPEPARAMS
 
 		// hack to allow height changes in outdoor areas
 		// This is what gets rid of the upper textures if there should be sky
@@ -1183,7 +1192,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 			wallVerts[1].y = FIXED_TO_FLOAT(worldhighslope);
 
 			if (gl_frontsector->numlights)
-				HWR_SplitWall(gl_frontsector, wallVerts, gl_toptexture, &Surf, FF_CUTLEVEL, NULL);
+				HWR_SplitWall(gl_frontsector, wallVerts, gl_toptexture, &Surf, FF_CUTLEVEL, NULL, 0);
 			else if (grTex->mipmap.flags & TF_TRANSPARENT)
 				HWR_AddTransparentWall(wallVerts, &Surf, gl_toptexture, PF_Environment, false, lightnum, colormap);
 			else
@@ -1249,7 +1258,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 			wallVerts[1].y = FIXED_TO_FLOAT(worldbottomslope);
 
 			if (gl_frontsector->numlights)
-				HWR_SplitWall(gl_frontsector, wallVerts, gl_bottomtexture, &Surf, FF_CUTLEVEL, NULL);
+				HWR_SplitWall(gl_frontsector, wallVerts, gl_bottomtexture, &Surf, FF_CUTLEVEL, NULL, 0);
 			else if (grTex->mipmap.flags & TF_TRANSPARENT)
 				HWR_AddTransparentWall(wallVerts, &Surf, gl_bottomtexture, PF_Environment, false, lightnum, colormap);
 			else
@@ -1465,13 +1474,17 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					blendmode = HWR_TranstableToAlpha(gl_curline->polyseg->translucency, &Surf);
 			}
 
+			// Render midtextures on two-sided lines with a z-buffer offset.
+			// This will cause the midtexture appear on top, if a FOF overlaps with it.
+			blendmode |= PF_Decal;
+
 			if (gl_frontsector->numlights)
 			{
 				if (!(blendmode & PF_Masked))
-					HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_TRANSLUCENT, NULL);
+					HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_TRANSLUCENT, NULL, PF_Decal);
 				else
 				{
-					HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL);
+					HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL, PF_Decal);
 				}
 			}
 			else if (!(blendmode & PF_Masked))
@@ -1554,7 +1567,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 
 			// I don't think that solid walls can use translucent linedef types...
 			if (gl_frontsector->numlights)
-				HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL);
+				HWR_SplitWall(gl_frontsector, wallVerts, gl_midtexture, &Surf, FF_CUTLEVEL, NULL, 0);
 			else
 			{
 				if (grTex->mipmap.flags & TF_TRANSPARENT)
@@ -1589,14 +1602,18 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 	{
 		ffloor_t * rover;
 		fixed_t    highcut = 0, lowcut = 0;
+		fixed_t lowcutslope, highcutslope;
+
+		// Used for height comparisons and etc across FOFs and slopes
+		fixed_t high1, highslope1, low1, lowslope1;
 
 		INT32 texnum;
 		line_t * newline = NULL; // Multi-Property FOF
 
-        ///TODO add slope support (fixing cutoffs, proper wall clipping) - maybe just disable highcut/lowcut if either sector or FOF has a slope
-        ///     to allow fun plane intersecting in OGL? But then people would abuse that and make software look bad. :C
-		highcut = gl_frontsector->ceilingheight < gl_backsector->ceilingheight ? gl_frontsector->ceilingheight : gl_backsector->ceilingheight;
-		lowcut = gl_frontsector->floorheight > gl_backsector->floorheight ? gl_frontsector->floorheight : gl_backsector->floorheight;
+		lowcut = max(worldbottom, worldlow);
+		highcut = min(worldtop, worldhigh);
+		lowcutslope = max(worldbottomslope, worldlowslope);
+		highcutslope = min(worldtopslope, worldhighslope);
 
 		if (gl_backsector->ffloors)
 		{
@@ -1618,7 +1635,11 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					continue;
 				if (!(rover->flags & FF_ALLSIDES) && rover->flags & FF_INVERTSIDES)
 					continue;
-				if (*rover->topheight < lowcut || *rover->bottomheight > highcut)
+
+				SLOPEPARAMS(*rover->t_slope, high1, highslope1, *rover->topheight)
+				SLOPEPARAMS(*rover->b_slope, low1,  lowslope1,  *rover->bottomheight)
+
+				if ((high1 < lowcut && highslope1 < lowcutslope) || (low1 > highcut && lowslope1 > highcutslope))
 					continue;
 
 				texnum = R_GetTextureNum(sides[rover->master->sidenum[0]].midtexture);
@@ -1634,10 +1655,17 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 				hS = P_GetFFloorTopZAt   (rover, v2x, v2y);
 				l  = P_GetFFloorBottomZAt(rover, v1x, v1y);
 				lS = P_GetFFloorBottomZAt(rover, v2x, v2y);
-				if (!(*rover->t_slope) && !gl_frontsector->c_slope && !gl_backsector->c_slope && h > highcut)
-					h = hS = highcut;
-				if (!(*rover->b_slope) && !gl_frontsector->f_slope && !gl_backsector->f_slope && l < lowcut)
-					l = lS = lowcut;
+				// Adjust the heights so the FOF does not overlap with top and bottom textures.
+				if (h >= highcut && hS >= highcutslope)
+				{
+					h = highcut;
+					hS = highcutslope;
+				}
+				if (l <= lowcut && lS <= lowcutslope)
+				{
+					l = lowcut;
+					lS = lowcutslope;
+				}
 				//Hurdler: HW code starts here
 				//FIXME: check if peging is correct
 				// set top/bottom coords
@@ -1717,7 +1745,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					Surf.PolyColor.s.alpha = HWR_FogBlockAlpha(rover->master->frontsector->lightlevel, rover->master->frontsector->extra_colormap);
 
 					if (gl_frontsector->numlights)
-						HWR_SplitWall(gl_frontsector, wallVerts, 0, &Surf, rover->flags, rover);
+						HWR_SplitWall(gl_frontsector, wallVerts, 0, &Surf, rover->flags, rover, 0);
 					else
 						HWR_AddTransparentWall(wallVerts, &Surf, 0, blendmode, true, lightnum, colormap);
 				}
@@ -1732,7 +1760,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					}
 
 					if (gl_frontsector->numlights)
-						HWR_SplitWall(gl_frontsector, wallVerts, texnum, &Surf, rover->flags, rover);
+						HWR_SplitWall(gl_frontsector, wallVerts, texnum, &Surf, rover->flags, rover, 0);
 					else
 					{
 						if (blendmode != PF_Masked)
@@ -1764,7 +1792,11 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					continue;
 				if (!(rover->flags & FF_ALLSIDES || rover->flags & FF_INVERTSIDES))
 					continue;
-				if (*rover->topheight < lowcut || *rover->bottomheight > highcut)
+
+				SLOPEPARAMS(*rover->t_slope, high1, highslope1, *rover->topheight)
+				SLOPEPARAMS(*rover->b_slope, low1,  lowslope1,  *rover->bottomheight)
+
+				if ((high1 < lowcut && highslope1 < lowcutslope) || (low1 > highcut && lowslope1 > highcutslope))
 					continue;
 
 				texnum = R_GetTextureNum(sides[rover->master->sidenum[0]].midtexture);
@@ -1779,10 +1811,17 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 				hS = P_GetFFloorTopZAt   (rover, v2x, v2y);
 				l  = P_GetFFloorBottomZAt(rover, v1x, v1y);
 				lS = P_GetFFloorBottomZAt(rover, v2x, v2y);
-				if (!(*rover->t_slope) && !gl_frontsector->c_slope && !gl_backsector->c_slope && h > highcut)
-					h = hS = highcut;
-				if (!(*rover->b_slope) && !gl_frontsector->f_slope && !gl_backsector->f_slope && l < lowcut)
-					l = lS = lowcut;
+				// Adjust the heights so the FOF does not overlap with top and bottom textures.
+				if (h >= highcut && hS >= highcutslope)
+				{
+					h = highcut;
+					hS = highcutslope;
+				}
+				if (l <= lowcut && lS <= lowcutslope)
+				{
+					l = lowcut;
+					lS = lowcutslope;
+				}
 				//Hurdler: HW code starts here
 				//FIXME: check if peging is correct
 				// set top/bottom coords
@@ -1829,7 +1868,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					Surf.PolyColor.s.alpha = HWR_FogBlockAlpha(rover->master->frontsector->lightlevel, rover->master->frontsector->extra_colormap);
 
 					if (gl_backsector->numlights)
-						HWR_SplitWall(gl_backsector, wallVerts, 0, &Surf, rover->flags, rover);
+						HWR_SplitWall(gl_backsector, wallVerts, 0, &Surf, rover->flags, rover, 0);
 					else
 						HWR_AddTransparentWall(wallVerts, &Surf, 0, blendmode, true, lightnum, colormap);
 				}
@@ -1844,7 +1883,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 					}
 
 					if (gl_backsector->numlights)
-						HWR_SplitWall(gl_backsector, wallVerts, texnum, &Surf, rover->flags, rover);
+						HWR_SplitWall(gl_backsector, wallVerts, texnum, &Surf, rover->flags, rover, 0);
 					else
 					{
 						if (blendmode != PF_Masked)
@@ -1856,6 +1895,7 @@ static void HWR_ProcessSeg(void) // Sort of like GLWall::Process in GZDoom
 			}
 		}
 	}
+#undef SLOPEPARAMS
 //Hurdler: end of 3d-floors test
 }
 
@@ -2659,30 +2699,30 @@ static void HWR_RenderPolyObjectPlane(polyobj_t *polysector, boolean isceiling,
 									FBITFIELD blendmode, UINT8 lightlevel, levelflat_t *levelflat, sector_t *FOFsector,
 									UINT8 alpha, extracolormap_t *planecolormap)
 {
-	float           height; //constant y for all points on the convex flat polygon
-	FOutVector      *v3d;
-	INT32             i;
-	float           flatxref,flatyref;
+	FSurfaceInfo Surf;
+	FOutVector *v3d;
+	INT32 shader = SHADER_DEFAULT;
+
+	size_t nrPlaneVerts = polysector->numVertices;
+	INT32 i;
+
+	float height = FIXED_TO_FLOAT(fixedheight); // constant y for all points on the convex flat polygon
+	float flatxref, flatyref;
 	float fflatwidth = 64.0f, fflatheight = 64.0f;
 	INT32 flatflag = 63;
+
 	boolean texflat = false;
+
 	float scrollx = 0.0f, scrolly = 0.0f;
 	angle_t angle = 0;
-	FSurfaceInfo    Surf;
 	fixed_t tempxs, tempyt;
-	size_t nrPlaneVerts;
 
 	static FOutVector *planeVerts = NULL;
 	static UINT16 numAllocedPlaneVerts = 0;
 
-	nrPlaneVerts = polysector->numVertices;
-
-	height = FIXED_TO_FLOAT(fixedheight);
-
-	if (nrPlaneVerts < 3)   //not even a triangle ?
+	if (nrPlaneVerts < 3)   // Not even a triangle?
 		return;
-
-	if (nrPlaneVerts > (size_t)UINT16_MAX) // FIXME: exceeds plVerts size
+	else if (nrPlaneVerts > (size_t)UINT16_MAX) // FIXME: exceeds plVerts size
 	{
 		CONS_Debug(DBG_RENDER, "polygon size of %s exceeds max value of %d vertices\n", sizeu1(nrPlaneVerts), UINT16_MAX);
 		return;
@@ -2834,7 +2874,6 @@ static void HWR_RenderPolyObjectPlane(polyobj_t *polysector, boolean isceiling,
 		v3d->z = FIXED_TO_FLOAT(polysector->vertices[i]->y);
 	}
 
-
 	HWR_Lighting(&Surf, lightlevel, planecolormap);
 
 	if (blendmode & PF_Translucent)
@@ -2845,7 +2884,13 @@ static void HWR_RenderPolyObjectPlane(polyobj_t *polysector, boolean isceiling,
 	else
 		blendmode |= PF_Masked|PF_Modulated;
 
-	HWR_ProcessPolygon(&Surf, planeVerts, nrPlaneVerts, blendmode, SHADER_FLOOR, false); // floor shader
+	if (HWR_UseShader())
+	{
+		shader = SHADER_FLOOR;
+		blendmode |= PF_ColorMapped;
+	}
+
+	HWR_ProcessPolygon(&Surf, planeVerts, nrPlaneVerts, blendmode, shader, false);
 }
 
 static void HWR_AddPolyObjectPlanes(void)
@@ -3566,6 +3611,8 @@ static void HWR_DrawDropShadow(mobj_t *thing, fixed_t scale)
 	FSurfaceInfo sSurf;
 	float fscale; float fx; float fy; float offset;
 	extracolormap_t *colormap = NULL;
+	FBITFIELD blendmode = PF_Translucent|PF_Modulated;
+	INT32 shader = SHADER_DEFAULT;
 	UINT8 i;
 	SINT8 flip = P_MobjFlip(thing);
 
@@ -3658,14 +3705,20 @@ static void HWR_DrawDropShadow(mobj_t *thing, fixed_t scale)
 	HWR_Lighting(&sSurf, 0, colormap);
 	sSurf.PolyColor.s.alpha = alpha;
 
-	HWR_ProcessPolygon(&sSurf, shadowVerts, 4, PF_Translucent|PF_Modulated, SHADER_SPRITE, false); // sprite shader
+	if (HWR_UseShader())
+	{
+		shader = SHADER_SPRITE;
+		blendmode |= PF_ColorMapped;
+	}
+
+	HWR_ProcessPolygon(&sSurf, shadowVerts, 4, blendmode, shader, false);
 }
 
 // This is expecting a pointer to an array containing 4 wallVerts for a sprite
 static void HWR_RotateSpritePolyToAim(gl_vissprite_t *spr, FOutVector *wallVerts, const boolean precip)
 {
 	if (cv_glspritebillboarding.value
-		&& spr && spr->mobj && !(spr->mobj->frame & FF_PAPERSPRITE)
+		&& spr && spr->mobj && !R_ThingIsPaperSprite(spr->mobj)
 		&& wallVerts)
 	{
 		float basey = FIXED_TO_FLOAT(spr->mobj->z);
@@ -3706,8 +3759,8 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 	boolean lightset = true;
 	FBITFIELD blend = 0;
 	FBITFIELD occlusion;
+	INT32 shader = SHADER_DEFAULT;
 	boolean use_linkdraw_hack = false;
-	boolean splat = R_ThingIsFloorSprite(spr->mobj);
 	UINT8 alpha;
 
 	INT32 i;
@@ -3766,22 +3819,19 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 		baseWallVerts[0].t = baseWallVerts[1].t = ((GLPatch_t *)gpatch->hardware)->max_t;
 	}
 
-	if (!splat)
-	{
-		// if it has a dispoffset, push it a little towards the camera
-		if (spr->dispoffset) {
-			float co = -gl_viewcos*(0.05f*spr->dispoffset);
-			float si = -gl_viewsin*(0.05f*spr->dispoffset);
-			baseWallVerts[0].z = baseWallVerts[3].z = baseWallVerts[0].z+si;
-			baseWallVerts[1].z = baseWallVerts[2].z = baseWallVerts[1].z+si;
-			baseWallVerts[0].x = baseWallVerts[3].x = baseWallVerts[0].x+co;
-			baseWallVerts[1].x = baseWallVerts[2].x = baseWallVerts[1].x+co;
-		}
-
-		// Let dispoffset work first since this adjust each vertex
-		HWR_RotateSpritePolyToAim(spr, baseWallVerts, false);
+	// if it has a dispoffset, push it a little towards the camera
+	if (spr->dispoffset) {
+		float co = -gl_viewcos*(0.05f*spr->dispoffset);
+		float si = -gl_viewsin*(0.05f*spr->dispoffset);
+		baseWallVerts[0].z = baseWallVerts[3].z = baseWallVerts[0].z+si;
+		baseWallVerts[1].z = baseWallVerts[2].z = baseWallVerts[1].z+si;
+		baseWallVerts[0].x = baseWallVerts[3].x = baseWallVerts[0].x+co;
+		baseWallVerts[1].x = baseWallVerts[2].x = baseWallVerts[1].x+co;
 	}
 
+	// Let dispoffset work first since this adjust each vertex
+	HWR_RotateSpritePolyToAim(spr, baseWallVerts, false);
+
 	realtop = top = baseWallVerts[3].y;
 	realbot = bot = baseWallVerts[0].y;
 	ttop = baseWallVerts[3].t;
@@ -3817,8 +3867,6 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 	else if (spr->mobj->frame & FF_TRANSMASK)
 	{
 		INT32 trans = (spr->mobj->frame & FF_TRANSMASK)>>FF_TRANSSHIFT;
-		if (spr->mobj->blendmode == AST_TRANSLUCENT && trans >= NUMTRANSMAPS)
-			return;
 		blend = HWR_SurfaceBlend(spr->mobj->blendmode, trans, &Surf);
 	}
 	else
@@ -3832,6 +3880,12 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 		if (!occlusion) use_linkdraw_hack = true;
 	}
 
+	if (HWR_UseShader())
+	{
+		shader = SHADER_SPRITE;
+		blend |= PF_ColorMapped;
+	}
+
 	alpha = Surf.PolyColor.s.alpha;
 
 	// Start with the lightlevel and colormap from the top of the sprite
@@ -3914,7 +3968,7 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 
 		// The x and y only need to be adjusted in the case that it's not a papersprite
 		if (cv_glspritebillboarding.value
-			&& spr->mobj && !(spr->mobj->frame & FF_PAPERSPRITE))
+			&& spr->mobj && !R_ThingIsPaperSprite(spr->mobj))
 		{
 			// Get the x and z of the vertices so billboarding draws correctly
 			realheight = realbot - realtop;
@@ -3940,7 +3994,7 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 
 		Surf.PolyColor.s.alpha = alpha;
 
-		HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, SHADER_SPRITE, false); // sprite shader
+		HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, shader, false);
 
 		if (use_linkdraw_hack)
 			HWR_LinkDrawHackAdd(wallVerts, spr);
@@ -3969,7 +4023,7 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 
 	Surf.PolyColor.s.alpha = alpha;
 
-	HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, SHADER_SPRITE, false); // sprite shader
+	HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, shader, false);
 
 	if (use_linkdraw_hack)
 		HWR_LinkDrawHackAdd(wallVerts, spr);
@@ -3983,7 +4037,7 @@ static void HWR_SplitSprite(gl_vissprite_t *spr)
 static void HWR_DrawSprite(gl_vissprite_t *spr)
 {
 	FOutVector wallVerts[4];
-	patch_t *gpatch; // sprite patch converted to hardware
+	patch_t *gpatch;
 	FSurfaceInfo Surf;
 	const boolean splat = R_ThingIsFloorSprite(spr->mobj);
 
@@ -4141,6 +4195,11 @@ static void HWR_DrawSprite(gl_vissprite_t *spr)
 		wallVerts[1].z = wallVerts[2].z = spr->z2;
 	}
 
+	// cache the patch in the graphics card memory
+	//12/12/99: Hurdler: same comment as above (for md2)
+	//Hurdler: 25/04/2000: now support colormap in hardware mode
+	HWR_GetMappedPatch(gpatch, spr->colormap);
+
 	if (spr->flip)
 	{
 		wallVerts[0].s = wallVerts[3].s = ((GLPatch_t *)gpatch->hardware)->max_s;
@@ -4160,11 +4219,6 @@ static void HWR_DrawSprite(gl_vissprite_t *spr)
 		wallVerts[0].t = wallVerts[1].t = ((GLPatch_t *)gpatch->hardware)->max_t;
 	}
 
-	// cache the patch in the graphics card memory
-	//12/12/99: Hurdler: same comment as above (for md2)
-	//Hurdler: 25/04/2000: now support colormap in hardware mode
-	HWR_GetMappedPatch(gpatch, spr->colormap);
-
 	if (!splat)
 	{
 		// if it has a dispoffset, push it a little towards the camera
@@ -4219,6 +4273,7 @@ static void HWR_DrawSprite(gl_vissprite_t *spr)
 	}
 
 	{
+		INT32 shader = SHADER_DEFAULT;
 		FBITFIELD blend = 0;
 		FBITFIELD occlusion;
 		boolean use_linkdraw_hack = false;
@@ -4244,8 +4299,6 @@ static void HWR_DrawSprite(gl_vissprite_t *spr)
 		else if (spr->mobj->frame & FF_TRANSMASK)
 		{
 			INT32 trans = (spr->mobj->frame & FF_TRANSMASK)>>FF_TRANSSHIFT;
-			if (spr->mobj->blendmode == AST_TRANSLUCENT && trans >= NUMTRANSMAPS)
-				return;
 			blend = HWR_SurfaceBlend(spr->mobj->blendmode, trans, &Surf);
 		}
 		else
@@ -4271,7 +4324,13 @@ static void HWR_DrawSprite(gl_vissprite_t *spr)
 			if (!occlusion) use_linkdraw_hack = true;
 		}
 
-		HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, SHADER_SPRITE, false); // sprite shader
+		if (HWR_UseShader())
+		{
+			shader = SHADER_SPRITE;
+			blend |= PF_ColorMapped;
+		}
+
+		HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, shader, false);
 
 		if (use_linkdraw_hack)
 			HWR_LinkDrawHackAdd(wallVerts, spr);
@@ -4282,9 +4341,10 @@ static void HWR_DrawSprite(gl_vissprite_t *spr)
 // Sprite drawer for precipitation
 static inline void HWR_DrawPrecipitationSprite(gl_vissprite_t *spr)
 {
+	INT32 shader = SHADER_DEFAULT;
 	FBITFIELD blend = 0;
 	FOutVector wallVerts[4];
-	patch_t *gpatch; // sprite patch converted to hardware
+	patch_t *gpatch;
 	FSurfaceInfo Surf;
 
 	if (!spr->mobj)
@@ -4337,7 +4397,7 @@ static inline void HWR_DrawPrecipitationSprite(gl_vissprite_t *spr)
 			// Always use the light at the top instead of whatever I was doing before
 			INT32 light = R_GetPlaneLight(sector, spr->mobj->z + spr->mobj->height, false);
 
-			if (!(spr->mobj->frame & FF_FULLBRIGHT))
+			if (!R_ThingIsFullBright(spr->mobj))
 				lightlevel = *sector->lightlist[light].lightlevel > 255 ? 255 : *sector->lightlist[light].lightlevel;
 
 			if (*sector->lightlist[light].extra_colormap)
@@ -4345,7 +4405,7 @@ static inline void HWR_DrawPrecipitationSprite(gl_vissprite_t *spr)
 		}
 		else
 		{
-			if (!(spr->mobj->frame & FF_FULLBRIGHT))
+			if (!R_ThingIsFullBright(spr->mobj))
 				lightlevel = sector->lightlevel > 255 ? 255 : sector->lightlevel;
 
 			if (sector->extra_colormap)
@@ -4358,9 +4418,7 @@ static inline void HWR_DrawPrecipitationSprite(gl_vissprite_t *spr)
 	if (spr->mobj->frame & FF_TRANSMASK)
 	{
 		INT32 trans = (spr->mobj->frame & FF_TRANSMASK)>>FF_TRANSSHIFT;
-		if (spr->mobj->blendmode == AST_TRANSLUCENT && trans >= NUMTRANSMAPS)
-			return;
-		blend = HWR_SurfaceBlend(spr->mobj->blendmode, trans, &Surf);
+		blend = HWR_SurfaceBlend(AST_TRANSLUCENT, trans, &Surf);
 	}
 	else
 	{
@@ -4372,7 +4430,13 @@ static inline void HWR_DrawPrecipitationSprite(gl_vissprite_t *spr)
 		blend = HWR_GetBlendModeFlag(spr->mobj->blendmode)|PF_Occlude;
 	}
 
-	HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, SHADER_SPRITE, false); // sprite shader
+	if (HWR_UseShader())
+	{
+		shader = SHADER_SPRITE;
+		blend |= PF_ColorMapped;
+	}
+
+	HWR_ProcessPolygon(&Surf, wallVerts, 4, blend|PF_Modulated, shader, false);
 }
 #endif
 
@@ -4921,8 +4985,8 @@ static void HWR_ProjectSprite(mobj_t *thing)
 
 	angle_t ang;
 	INT32 heightsec, phs;
-	const boolean papersprite = R_ThingIsPaperSprite(thing);
 	const boolean splat = R_ThingIsFloorSprite(thing);
+	const boolean papersprite = (R_ThingIsPaperSprite(thing) && !splat);
 	angle_t mobjangle = (thing->player ? thing->player->drawangle : thing->angle);
 	float z1, z2;
 
@@ -4939,6 +5003,13 @@ static void HWR_ProjectSprite(mobj_t *thing)
 	if (thing->spritexscale < 1 || thing->spriteyscale < 1)
 		return;
 
+	// Visibility check by the blend mode.
+	if (thing->frame & FF_TRANSMASK)
+	{
+		if (!R_BlendLevelVisible(thing->blendmode, (thing->frame & FF_TRANSMASK)>>FF_TRANSSHIFT))
+			return;
+	}
+
 	dispoffset = thing->info->dispoffset;
 
 	this_scale = FIXED_TO_FLOAT(thing->scale);
@@ -5270,7 +5341,7 @@ static void HWR_ProjectSprite(mobj_t *thing)
 		else if (vis->mobj->type == MT_METALSONIC_BATTLE)
 			vis->colormap = R_GetTranslationColormap(TC_METALSONIC, 0, GTC_CACHE);
 		else
-			vis->colormap = R_GetTranslationColormap(TC_BOSS, 0, GTC_CACHE);
+			vis->colormap = R_GetTranslationColormap(TC_BOSS, vis->mobj->color, GTC_CACHE);
 	}
 	else if (thing->color)
 	{
@@ -5325,6 +5396,13 @@ static void HWR_ProjectPrecipitationSprite(precipmobj_t *thing)
 	unsigned rot = 0;
 	UINT8 flip;
 
+	// Visibility check by the blend mode.
+	if (thing->frame & FF_TRANSMASK)
+	{
+		if (!R_BlendLevelVisible(thing->blendmode, (thing->frame & FF_TRANSMASK)>>FF_TRANSSHIFT))
+			return;
+	}
+
 	// transform the origin point
 	tr_x = FIXED_TO_FLOAT(thing->x) - gl_viewx;
 	tr_y = FIXED_TO_FLOAT(thing->y) - gl_viewy;
@@ -5358,7 +5436,7 @@ static void HWR_ProjectPrecipitationSprite(precipmobj_t *thing)
 		return;
 #endif
 
-	sprframe = &sprdef->spriteframes[ thing->frame & FF_FRAMEMASK];
+	sprframe = &sprdef->spriteframes[thing->frame & FF_FRAMEMASK];
 
 	// use single rotation for all views
 	lumpoff = sprframe->lumpid[0];
@@ -5651,7 +5729,7 @@ static void HWR_DrawSkyBackground(player_t *player)
 
 		dimensionmultiply = ((float)textures[texturetranslation[skytexture]]->width/256.0f);
 
-		v[0].s = v[3].s = (-1.0f * angle) / ((ANGLE_90-1)*dimensionmultiply); // left
+		v[0].s = v[3].s = (-1.0f * angle) / (((float)ANGLE_90-1.0f)*dimensionmultiply); // left
 		v[2].s = v[1].s = v[0].s + (1.0f/dimensionmultiply); // right (or left + 1.0f)
 		// use +angle and -1.0f above instead if you wanted old backwards behavior
 
@@ -6454,24 +6532,29 @@ void HWR_RenderWall(FOutVector *wallVerts, FSurfaceInfo *pSurf, FBITFIELD blend,
 	FBITFIELD blendmode = blend;
 	UINT8 alpha = pSurf->PolyColor.s.alpha; // retain the alpha
 
-	int shader;
+	INT32 shader = SHADER_DEFAULT;
 
 	// Lighting is done here instead so that fog isn't drawn incorrectly on transparent walls after sorting
 	HWR_Lighting(pSurf, lightlevel, wallcolormap);
 
 	pSurf->PolyColor.s.alpha = alpha; // put the alpha back after lighting
 
-	shader = SHADER_WALL;	// wall shader
-
 	if (blend & PF_Environment)
 		blendmode |= PF_Occlude;	// PF_Occlude must be used for solid objects
 
-	if (fogwall)
+	if (HWR_UseShader())
 	{
-		blendmode |= PF_Fog;
-		shader = SHADER_FOG;	// fog shader
+		if (fogwall)
+			shader = SHADER_FOG;
+		else
+			shader = SHADER_WALL;
+
+		blendmode |= PF_ColorMapped;
 	}
 
+	if (fogwall)
+		blendmode |= PF_Fog;
+
 	blendmode |= PF_Modulated;	// No PF_Occlude means overlapping (incorrect) transparency
 	HWR_ProcessPolygon(pSurf, wallVerts, 4, blendmode, shader, false);
 }
@@ -6514,7 +6597,7 @@ void HWR_DoPostProcessor(player_t *player)
 
 		Surf.PolyColor.s.alpha = 0xc0; // match software mode
 
-		HWD.pfnDrawPolygon(&Surf, v, 4, PF_Modulated|PF_AdditiveSource|PF_NoTexture|PF_NoDepthTest);
+		HWD.pfnDrawPolygon(&Surf, v, 4, PF_Modulated|PF_Additive|PF_NoTexture|PF_NoDepthTest);
 	}
 
 	// Capture the screen for intermission and screen waving
@@ -6647,7 +6730,6 @@ void HWR_DrawScreenFinalTexture(int width, int height)
     HWD.pfnDrawScreenFinalTexture(width, height);
 }
 
-// jimita 18032019
 static inline UINT16 HWR_FindShaderDefs(UINT16 wadnum)
 {
 	UINT16 i;
diff --git a/src/hardware/hw_main.h b/src/hardware/hw_main.h
index 4ad09aa3d63b1612239243ca15a0a2d878ea7c8d..218650b53283a6d285f5a8e79d4fe04a8463cca7 100644
--- a/src/hardware/hw_main.h
+++ b/src/hardware/hw_main.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -69,7 +69,7 @@ void HWR_Lighting(FSurfaceInfo *Surface, INT32 light_level, extracolormap_t *col
 UINT8 HWR_FogBlockAlpha(INT32 light, extracolormap_t *colormap); // Let's see if this can work
 
 UINT8 HWR_GetTranstableAlpha(INT32 transtablenum);
-FBITFIELD HWR_GetBlendModeFlag(INT32 ast);
+FBITFIELD HWR_GetBlendModeFlag(INT32 style);
 FBITFIELD HWR_SurfaceBlend(INT32 style, INT32 transtablenum, FSurfaceInfo *pSurf);
 FBITFIELD HWR_TranstableToAlpha(INT32 transtablenum, FSurfaceInfo *pSurf);
 
diff --git a/src/hardware/hw_md2.c b/src/hardware/hw_md2.c
index 2e944d3e601c03f541bdf65d3ed57fda4c81d4a1..b66f91e1962579788ebaae5bdc5baec73cdff325 100644
--- a/src/hardware/hw_md2.c
+++ b/src/hardware/hw_md2.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -158,7 +158,7 @@ static GLTextureFormat_t PNG_Load(const char *filename, int *w, int *h, GLPatch_
 	jmp_buf jmpbuf;
 #endif
 #endif
-	png_FILE_p png_FILE;
+	volatile png_FILE_p png_FILE;
 	//Filename checking fixed ~Monster Iestyn and Golden
 	char *pngfilename = va("%s"PATHSEP"models"PATHSEP"%s", srb2home, filename);
 
@@ -777,24 +777,7 @@ static void HWR_CreateBlendedTexture(patch_t *gpatch, patch_t *blendgpatch, GLMi
 
 	while (size--)
 	{
-		if (skinnum == TC_BOSS)
-		{
-			// Turn everything below a certain threshold white
-			if ((image->s.red == image->s.green) && (image->s.green == image->s.blue) && image->s.blue < 127)
-			{
-				// Lactozilla: Invert the colors
-				cur->s.red = cur->s.green = cur->s.blue = (255 - image->s.blue);
-			}
-			else
-			{
-				cur->s.red = image->s.red;
-				cur->s.green = image->s.green;
-				cur->s.blue = image->s.blue;
-			}
-
-			cur->s.alpha = image->s.alpha;
-		}
-		else if (skinnum == TC_ALLWHITE)
+		if (skinnum == TC_ALLWHITE)
 		{
 			// Turn everything white
 			cur->s.red = cur->s.green = cur->s.blue = 255;
@@ -1065,6 +1048,15 @@ skippixel:
 
 					cur->s.alpha = image->s.alpha;
 				}
+				else if (skinnum == TC_BOSS)
+				{
+					// Turn everything below a certain threshold white
+					if ((image->s.red == image->s.green) && (image->s.green == image->s.blue) && image->s.blue < 127)
+					{
+						// Lactozilla: Invert the colors
+						cur->s.red = cur->s.green = cur->s.blue = (255 - image->s.blue);
+					}
+				}
 			}
 		}
 
@@ -1314,7 +1306,7 @@ boolean HWR_DrawModel(gl_vissprite_t *spr)
 
 			light = R_GetPlaneLight(sector, spr->mobj->z + spr->mobj->height, false); // Always use the light at the top instead of whatever I was doing before
 
-			if (!(spr->mobj->frame & FF_FULLBRIGHT))
+			if (!R_ThingIsFullBright(spr->mobj))
 				lightlevel = *sector->lightlist[light].lightlevel > 255 ? 255 : *sector->lightlist[light].lightlevel;
 
 			if (*sector->lightlist[light].extra_colormap)
@@ -1322,7 +1314,7 @@ boolean HWR_DrawModel(gl_vissprite_t *spr)
 		}
 		else
 		{
-			if (!(spr->mobj->frame & FF_FULLBRIGHT))
+			if (!R_ThingIsFullBright(spr->mobj))
 				lightlevel = sector->lightlevel > 255 ? 255 : sector->lightlevel;
 
 			if (sector->extra_colormap)
@@ -1340,10 +1332,9 @@ boolean HWR_DrawModel(gl_vissprite_t *spr)
 		GLPatch_t *hwrPatch = NULL, *hwrBlendPatch = NULL;
 		INT32 durs = spr->mobj->state->tics;
 		INT32 tics = spr->mobj->tics;
-		//mdlframe_t *next = NULL;
-		const boolean papersprite = (spr->mobj->frame & FF_PAPERSPRITE);
-		const UINT8 flip = (UINT8)(!(spr->mobj->eflags & MFE_VERTICALFLIP) != !(spr->mobj->frame & FF_VERTICALFLIP));
-		const UINT8 hflip = (UINT8)(!(spr->mobj->mirrored) != !(spr->mobj->frame & FF_HORIZONTALFLIP));
+		const boolean papersprite = (R_ThingIsPaperSprite(spr->mobj) && !R_ThingIsFloorSprite(spr->mobj));
+		const UINT8 flip = (UINT8)(!(spr->mobj->eflags & MFE_VERTICALFLIP) != !R_ThingVerticallyFlipped(spr->mobj));
+		const UINT8 hflip = (UINT8)(!(spr->mobj->mirrored) != !R_ThingHorizontallyFlipped(spr->mobj));
 		spritedef_t *sprdef;
 		spriteframe_t *sprframe;
 		spriteinfo_t *sprinfo;
@@ -1405,6 +1396,11 @@ boolean HWR_DrawModel(gl_vissprite_t *spr)
 			|| ((!hwrBlendPatch->mipmap->format || !hwrBlendPatch->mipmap->downloaded) && !md2->noblendfile)))
 			md2_loadBlendTexture(md2);
 
+		// Load it again, because it isn't being loaded into blendgpatch after md2_loadblendtexture...
+		blendgpatch = md2->blendgrpatch;
+		if (blendgpatch)
+			hwrBlendPatch = ((GLPatch_t *)blendgpatch->hardware);
+
 		if (md2->error)
 			return false; // we already failed loading this before :(
 		if (!md2->model)
@@ -1529,7 +1525,12 @@ boolean HWR_DrawModel(gl_vissprite_t *spr)
 				{
 					nextFrame = (spr->mobj->frame & FF_FRAMEMASK) + 1;
 					if (nextFrame >= mod)
-						nextFrame = 0;
+					{
+						if (spr->mobj->state->frame & FF_SPR2ENDSTATE)
+							nextFrame--;
+						else
+							nextFrame = 0;
+					}
 					if (frame || !(spr->mobj->state->frame & FF_SPR2ENDSTATE))
 						nextFrame = md2->model->spr2frames[spr2].frames[nextFrame];
 					else
diff --git a/src/hardware/hw_md2.h b/src/hardware/hw_md2.h
index 0f4d2c7bc925f45005757c09a80cabaf103a8a3a..9249c034c2b1394f289681e1d33cc8726a9f161a 100644
--- a/src/hardware/hw_md2.h
+++ b/src/hardware/hw_md2.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/hardware/r_opengl/r_opengl.c b/src/hardware/r_opengl/r_opengl.c
index 8cd948eeadf57a34fa1290479b2f84d26210ba28..645a3bbaeca39338b1112e29d1920c9ef4ef9c6e 100644
--- a/src/hardware/r_opengl/r_opengl.c
+++ b/src/hardware/r_opengl/r_opengl.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 1998-2020 by Sonic Team Junior.
+// Copyright (C) 1998-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -58,8 +58,9 @@ static  GLuint      tex_downloaded  = 0;
 static  GLfloat     fov             = 90.0f;
 static  FBITFIELD   CurrentPolyFlags;
 
-static  FTextureInfo *gl_cachetail = NULL;
-static  FTextureInfo *gl_cachehead = NULL;
+// Linked list of all textures.
+static FTextureInfo *TexCacheTail = NULL;
+static FTextureInfo *TexCacheHead = NULL;
 
 RGBA_t  myPaletteData[256];
 GLint   screen_width    = 0;               // used by Draw2DLine()
@@ -909,7 +910,6 @@ void SetupGLFunc4(void)
 	pgluBuild2DMipmaps = GetGLFunc("gluBuild2DMipmaps");
 }
 
-// jimita
 EXPORT boolean HWRAPI(CompileShaders) (void)
 {
 #ifdef GL_SHADERS
@@ -961,8 +961,6 @@ EXPORT boolean HWRAPI(CompileShaders) (void)
 		}
 	}
 
-	SetShader(SHADER_DEFAULT);
-
 	return true;
 #else
 	return false;
@@ -1287,10 +1285,34 @@ void SetStates(void)
 // -----------------+
 // DeleteTexture    : Deletes a texture from the GPU and frees its data
 // -----------------+
-EXPORT void HWRAPI(DeleteTexture) (FTextureInfo *pTexInfo)
+EXPORT void HWRAPI(DeleteTexture) (GLMipmap_t *pTexInfo)
 {
-	if (pTexInfo->downloaded)
+	FTextureInfo *head = TexCacheHead;
+
+	if (!pTexInfo)
+		return;
+	else if (pTexInfo->downloaded)
 		pglDeleteTextures(1, (GLuint *)&pTexInfo->downloaded);
+
+	while (head)
+	{
+		if (head->downloaded == pTexInfo->downloaded)
+		{
+			if (head->next)
+				head->next->prev = head->prev;
+			else // no next -> tail is being deleted -> update TexCacheTail
+				TexCacheTail = head->prev;
+			if (head->prev)
+				head->prev->next = head->next;
+			else // no prev -> head is being deleted -> update TexCacheHead
+				TexCacheHead = head->next;
+			free(head);
+			break;
+		}
+
+		head = head->next;
+	}
+
 	pTexInfo->downloaded = 0;
 }
 
@@ -1303,23 +1325,26 @@ void Flush(void)
 {
 	//GL_DBG_Printf ("HWR_Flush()\n");
 
-	while (gl_cachehead)
+	while (TexCacheHead)
 	{
-		DeleteTexture(gl_cachehead);
-		gl_cachehead = gl_cachehead->nextmipmap;
-	}
+		FTextureInfo *pTexInfo = TexCacheHead;
+		GLMipmap_t *texture = pTexInfo->texture;
 
-	ClearCacheList(); //Hurdler: well, gl_cachehead is already NULL
-	tex_downloaded = 0;
-}
+		if (pTexInfo->downloaded)
+		{
+			pglDeleteTextures(1, (GLuint *)&pTexInfo->downloaded);
+			pTexInfo->downloaded = 0;
+		}
 
+		if (texture)
+			texture->downloaded = 0;
 
-// -----------------+
-// ClearCacheList   : Clears the texture cache tail and head
-// -----------------+
-EXPORT void HWRAPI(ClearCacheList) (void)
-{
-	gl_cachetail = gl_cachehead = NULL;
+		TexCacheHead = pTexInfo->next;
+		free(pTexInfo);
+	}
+
+	TexCacheTail = TexCacheHead = NULL; //Hurdler: well, TexCacheHead is already NULL
+	tex_downloaded = 0;
 }
 
 
@@ -1554,12 +1579,11 @@ static void SetBlendMode(FBITFIELD flags)
 		case PF_Additive & PF_Blending:
 		case PF_Subtractive & PF_Blending:
 		case PF_ReverseSubtract & PF_Blending:
+			pglBlendFunc(GL_SRC_ALPHA, GL_ONE); // src * alpha + dest
+			break;
 		case PF_Environment & PF_Blending:
 			pglBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 			break;
-		case PF_AdditiveSource & PF_Blending:
-			pglBlendFunc(GL_SRC_ALPHA, GL_ONE); // src * alpha + dest
-			break;
 		case PF_Multiplicative & PF_Blending:
 			pglBlendFunc(GL_DST_COLOR, GL_ZERO);
 			break;
@@ -1598,7 +1622,6 @@ static void SetBlendMode(FBITFIELD flags)
 			break;
 		case PF_Translucent & PF_Blending:
 		case PF_Additive & PF_Blending:
-		case PF_AdditiveSource & PF_Blending:
 		case PF_Subtractive & PF_Blending:
 		case PF_ReverseSubtract & PF_Blending:
 		case PF_Environment & PF_Blending:
@@ -1718,7 +1741,7 @@ EXPORT void HWRAPI(SetBlend) (FBITFIELD PolyFlags)
 // -----------------+
 // UpdateTexture    : Updates the texture data.
 // -----------------+
-EXPORT void HWRAPI(UpdateTexture) (FTextureInfo *pTexInfo)
+EXPORT void HWRAPI(UpdateTexture) (GLMipmap_t *pTexInfo)
 {
 	// Download a mipmap
 	boolean updatemipmap = true;
@@ -1920,7 +1943,7 @@ EXPORT void HWRAPI(UpdateTexture) (FTextureInfo *pTexInfo)
 // -----------------+
 // SetTexture       : The mipmap becomes the current texture source
 // -----------------+
-EXPORT void HWRAPI(SetTexture) (FTextureInfo *pTexInfo)
+EXPORT void HWRAPI(SetTexture) (GLMipmap_t *pTexInfo)
 {
 	if (!pTexInfo)
 	{
@@ -1937,17 +1960,25 @@ EXPORT void HWRAPI(SetTexture) (FTextureInfo *pTexInfo)
 	}
 	else
 	{
+		FTextureInfo *newTex = calloc(1, sizeof (*newTex));
+
 		UpdateTexture(pTexInfo);
-		pTexInfo->nextmipmap = NULL;
+
+		newTex->texture = pTexInfo;
+		newTex->downloaded = (UINT32)pTexInfo->downloaded;
+		newTex->width = (UINT32)pTexInfo->width;
+		newTex->height = (UINT32)pTexInfo->height;
+		newTex->format = (UINT32)pTexInfo->format;
 
 		// insertion at the tail
-		if (gl_cachetail)
+		if (TexCacheTail)
 		{
-			gl_cachetail->nextmipmap = pTexInfo;
-			gl_cachetail = pTexInfo;
+			newTex->prev = TexCacheTail;
+			TexCacheTail->next = newTex;
+			TexCacheTail = newTex;
 		}
 		else // initialization of the linked list
-			gl_cachetail = gl_cachehead = pTexInfo;
+			TexCacheTail = TexCacheHead = newTex;
 	}
 }
 
@@ -2144,32 +2175,34 @@ static void PreparePolygon(FSurfaceInfo *pSurf, FOutVector *pOutVerts, FBITFIELD
 
 	SetBlend(PolyFlags);    //TODO: inline (#pragma..)
 
-	// PolyColor
 	if (pSurf)
 	{
-		// If Modulated, mix the surface colour to the texture
+		// If modulated, mix the surface colour to the texture
 		if (CurrentPolyFlags & PF_Modulated)
-		{
-			// Poly color
-			poly.red    = byte2float[pSurf->PolyColor.s.red];
-			poly.green  = byte2float[pSurf->PolyColor.s.green];
-			poly.blue   = byte2float[pSurf->PolyColor.s.blue];
-			poly.alpha  = byte2float[pSurf->PolyColor.s.alpha];
-
 			pglColor4ubv((GLubyte*)&pSurf->PolyColor.s);
-		}
 
-		// Tint color
-		tint.red   = byte2float[pSurf->TintColor.s.red];
-		tint.green = byte2float[pSurf->TintColor.s.green];
-		tint.blue  = byte2float[pSurf->TintColor.s.blue];
-		tint.alpha = byte2float[pSurf->TintColor.s.alpha];
+		// If the surface is either modulated or colormapped, or both
+		if (CurrentPolyFlags & (PF_Modulated | PF_ColorMapped))
+		{
+			poly.red   = byte2float[pSurf->PolyColor.s.red];
+			poly.green = byte2float[pSurf->PolyColor.s.green];
+			poly.blue  = byte2float[pSurf->PolyColor.s.blue];
+			poly.alpha = byte2float[pSurf->PolyColor.s.alpha];
+		}
 
-		// Fade color
-		fade.red   = byte2float[pSurf->FadeColor.s.red];
-		fade.green = byte2float[pSurf->FadeColor.s.green];
-		fade.blue  = byte2float[pSurf->FadeColor.s.blue];
-		fade.alpha = byte2float[pSurf->FadeColor.s.alpha];
+		// Only if the surface is colormapped
+		if (CurrentPolyFlags & PF_ColorMapped)
+		{
+			tint.red   = byte2float[pSurf->TintColor.s.red];
+			tint.green = byte2float[pSurf->TintColor.s.green];
+			tint.blue  = byte2float[pSurf->TintColor.s.blue];
+			tint.alpha = byte2float[pSurf->TintColor.s.alpha];
+
+			fade.red   = byte2float[pSurf->FadeColor.s.red];
+			fade.green = byte2float[pSurf->FadeColor.s.green];
+			fade.blue  = byte2float[pSurf->FadeColor.s.blue];
+			fade.alpha = byte2float[pSurf->FadeColor.s.alpha];
+		}
 	}
 
 	// this test is added for new coronas' code (without depth buffer)
@@ -2722,7 +2755,7 @@ static void DrawModelEx(model_t *model, INT32 frameIndex, INT32 duration, INT32
 	fade.alpha = byte2float[Surface->FadeColor.s.alpha];
 
 	flags = (Surface->PolyFlags | PF_Modulated);
-	if (Surface->PolyFlags & (PF_Additive|PF_AdditiveSource|PF_Subtractive|PF_ReverseSubtract|PF_Multiplicative))
+	if (Surface->PolyFlags & (PF_Additive|PF_Subtractive|PF_ReverseSubtract|PF_Multiplicative))
 		flags |= PF_Occlude;
 	else if (Surface->PolyColor.s.alpha == 0xFF)
 		flags |= (PF_Occlude | PF_Masked);
@@ -2983,7 +3016,6 @@ EXPORT void HWRAPI(SetTransform) (FTransform *stransform)
 	pglMatrixMode(GL_PROJECTION);
 	pglLoadIdentity();
 
-	// jimita 14042019
 	// Simulate Software's y-shearing
 	// https://zdoom.org/wiki/Y-shearing
 	if (shearing)
@@ -3011,7 +3043,7 @@ EXPORT void HWRAPI(SetTransform) (FTransform *stransform)
 
 EXPORT INT32  HWRAPI(GetTextureUsed) (void)
 {
-	FTextureInfo *tmp = gl_cachehead;
+	FTextureInfo *tmp = TexCacheHead;
 	INT32 res = 0;
 
 	while (tmp)
@@ -3028,7 +3060,7 @@ EXPORT INT32  HWRAPI(GetTextureUsed) (void)
 
 		// Add it up!
 		res += tmp->height*tmp->width*bpp;
-		tmp = tmp->nextmipmap;
+		tmp = tmp->next;
 	}
 
 	return res;
diff --git a/src/http-mserv.c b/src/http-mserv.c
index 7c7d04495cd8f5641bd7c6f236c47bd0eb344c64..f9134ba5008b0ba5f27e0b6ae48feee7ec95feef 100644
--- a/src/http-mserv.c
+++ b/src/http-mserv.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/hu_stuff.c b/src/hu_stuff.c
index 9516b466bc0ee82ad18aa6c2d51d4a5aabea4bbe..e0eaf8fb178f1252b60b93e329d2f14d05858e53 100644
--- a/src/hu_stuff.c
+++ b/src/hu_stuff.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -98,6 +98,7 @@ patch_t *emeraldpics[3][8]; // 0 = normal, 1 = tiny, 2 = coinbox
 static patch_t *emblemicon;
 patch_t *tokenicon;
 static patch_t *exiticon;
+static patch_t *nopingicon;
 
 //-------------------------------------------
 //              misc vars
@@ -286,6 +287,7 @@ void HU_LoadGraphics(void)
 	emblemicon = W_CachePatchName("EMBLICON", PU_HUDGFX);
 	tokenicon = W_CachePatchName("TOKNICON", PU_HUDGFX);
 	exiticon = W_CachePatchName("EXITICON", PU_HUDGFX);
+	nopingicon = W_CachePatchName("NOPINGICON", PU_HUDGFX);
 
 	emeraldpics[0][0] = W_CachePatchName("CHAOS1", PU_HUDGFX);
 	emeraldpics[0][1] = W_CachePatchName("CHAOS2", PU_HUDGFX);
@@ -2109,15 +2111,18 @@ void HU_Drawer(void)
 		return;
 
 	// draw the crosshair, not when viewing demos nor with chasecam
-	if (!automapactive && cv_crosshair.value && !demoplayback &&
-		(!camera.chase || ticcmd_ztargetfocus[0])
-	&& !players[displayplayer].spectator)
-		HU_DrawCrosshair();
+	if (LUA_HudEnabled(hud_crosshair))
+	{
+		if (!automapactive && cv_crosshair.value && !demoplayback &&
+			(!camera.chase || ticcmd_ztargetfocus[0])
+		&& !players[displayplayer].spectator)
+			HU_DrawCrosshair();
 
-	if (!automapactive && cv_crosshair2.value && !demoplayback &&
-		(!camera2.chase || ticcmd_ztargetfocus[1])
-	&& !players[secondarydisplayplayer].spectator)
-		HU_DrawCrosshair2();
+		if (!automapactive && cv_crosshair2.value && !demoplayback &&
+			(!camera2.chase || ticcmd_ztargetfocus[1])
+		&& !players[secondarydisplayplayer].spectator)
+			HU_DrawCrosshair2();
+	}
 
 	// draw desynch text
 	if (hu_redownloadinggamestate)
@@ -2243,8 +2248,8 @@ void HU_Erase(void)
 //
 void HU_drawPing(INT32 x, INT32 y, UINT32 ping, boolean notext, INT32 flags)
 {
-	UINT8 numbars = 1; // how many ping bars do we draw?
-	UINT8 barcolor = 35; // color we use for the bars (green, yellow or red)
+	UINT8 numbars = 0; // how many ping bars do we draw?
+	UINT8 barcolor = 31; // color we use for the bars (green, yellow, red or black)
 	SINT8 i = 0;
 	SINT8 yoffset = 6;
 	INT32 dx = x+1 - (V_SmallStringWidth(va("%dms", ping),
@@ -2257,11 +2262,16 @@ void HU_drawPing(INT32 x, INT32 y, UINT32 ping, boolean notext, INT32 flags)
 	}
 	else if (ping < 256)
 	{
-		numbars = 2; // Apparently ternaries w/ multiple statements don't look good in C so I decided against it.
+		numbars = 2;
 		barcolor = 73;
 	}
+	else if (ping < UINT32_MAX)
+	{
+		numbars = 1;
+		barcolor = 35;
+	}
 
-	if (!notext || vid.width >= 640) // how sad, we're using a shit resolution.
+	if (ping < UINT32_MAX && (!notext || vid.width >= 640)) // how sad, we're using a shit resolution.
 		V_DrawSmallString(dx, y+4, V_ALLOWLOWERCASE|flags, va("%dms", ping));
 
 	for (i=0; (i<3); i++) // Draw the ping bar
@@ -2272,6 +2282,9 @@ void HU_drawPing(INT32 x, INT32 y, UINT32 ping, boolean notext, INT32 flags)
 
 		yoffset -= 2;
 	}
+
+	if (ping == UINT32_MAX)
+		V_DrawSmallScaledPatch(x + 4 - nopingicon->width/2, y + 9 - nopingicon->height/2, 0, nopingicon);
 }
 
 //
@@ -2298,16 +2311,17 @@ void HU_DrawTabRankings(INT32 x, INT32 y, playersort_t *tab, INT32 scorelines, I
 
 		if (!splitscreen) // don't draw it on splitscreen,
 		{
-			if (!(tab[i].num == serverplayer || players[tab[i].num].quittime))
-				HU_drawPing(x+ 253, y, playerpingtable[tab[i].num], false, 0);
+			if (tab[i].num != serverplayer)
+				HU_drawPing(x + 253, y, players[tab[i].num].quittime ? UINT32_MAX : playerpingtable[tab[i].num], false, 0);
 			//else
 			//	V_DrawSmallString(x+ 246, y+4, V_YELLOWMAP, "SERVER");
 		}
 
-		V_DrawString(x + 20, y,
-		             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
-		             | (greycheck ? V_60TRANS : 0)
-		             | V_ALLOWLOWERCASE, tab[i].name);
+		if (!players[tab[i].num].quittime || (leveltime / (TICRATE/2) & 1))
+			V_DrawString(x + 20, y,
+		                 ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
+		                 | (greycheck ? V_60TRANS : 0)
+		                 | V_ALLOWLOWERCASE, tab[i].name);
 
 		// Draw emeralds
 		if (players[tab[i].num].powers[pw_invulnerability] && (players[tab[i].num].powers[pw_invulnerability] == players[tab[i].num].powers[pw_sneakers]) && ((leveltime/7) & 1))
@@ -2455,10 +2469,11 @@ static void HU_Draw32TeamTabRankings(playersort_t *tab, INT32 whiteplayer)
 		supercheck = supercheckdef;
 
 		strlcpy(name, tab[i].name, 8);
-		V_DrawString(x + 10, y,
-		             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
-		             | (greycheck ? 0 : V_TRANSLUCENT)
-		             | V_ALLOWLOWERCASE, name);
+		if (!players[tab[i].num].quittime || (leveltime / (TICRATE/2) & 1))
+			V_DrawString(x + 10, y,
+			             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
+			             | (greycheck ? 0 : V_TRANSLUCENT)
+			             | V_ALLOWLOWERCASE, name);
 
 		if (gametyperules & GTR_TEAMFLAGS)
 		{
@@ -2497,10 +2512,10 @@ static void HU_Draw32TeamTabRankings(playersort_t *tab, INT32 whiteplayer)
 		V_DrawRightAlignedThinString(x+128, y, ((players[tab[i].num].spectator || players[tab[i].num].playerstate == PST_DEAD) ? 0 : V_TRANSLUCENT), va("%u", tab[i].count));
 		if (!splitscreen)
 		{
-			if (!(tab[i].num == serverplayer || players[tab[i].num].quittime))
-				HU_drawPing(x+ 135, y+1, playerpingtable[tab[i].num], true, 0);
-		//else
-			//V_DrawSmallString(x+ 129, y+4, V_YELLOWMAP, "HOST");
+			if (tab[i].num != serverplayer)
+				HU_drawPing(x + 135, y+1, players[tab[i].num].quittime ? UINT32_MAX : playerpingtable[tab[i].num], true, 0);
+			//else
+				//V_DrawSmallString(x+ 129, y+4, V_YELLOWMAP, "HOST");
 		}
 	}
 }
@@ -2583,10 +2598,11 @@ void HU_DrawTeamTabRankings(playersort_t *tab, INT32 whiteplayer)
 		supercheck = supercheckdef;
 
 		strlcpy(name, tab[i].name, 7);
-		V_DrawString(x + 20, y,
-		             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
-		             | (greycheck ? V_TRANSLUCENT : 0)
-		             | V_ALLOWLOWERCASE, name);
+		if (!players[tab[i].num].quittime || (leveltime / (TICRATE/2) & 1))
+			V_DrawString(x + 20, y,
+			             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
+			             | (greycheck ? V_TRANSLUCENT : 0)
+			             | V_ALLOWLOWERCASE, name);
 
 		if (gametyperules & GTR_TEAMFLAGS)
 		{
@@ -2621,10 +2637,10 @@ void HU_DrawTeamTabRankings(playersort_t *tab, INT32 whiteplayer)
 		V_DrawRightAlignedThinString(x+100, y, (greycheck ? V_TRANSLUCENT : 0), va("%u", tab[i].count));
 		if (!splitscreen)
 		{
-			if (!(tab[i].num == serverplayer || players[tab[i].num].quittime))
-				HU_drawPing(x+ 113, y, playerpingtable[tab[i].num], false, 0);
-		//else
-		//	V_DrawSmallString(x+ 94, y+4, V_YELLOWMAP, "SERVER");
+			if (tab[i].num != serverplayer)
+				HU_drawPing(x+ 113, y, players[tab[i].num].quittime ? UINT32_MAX : playerpingtable[tab[i].num], false, 0);
+			//else
+			//	V_DrawSmallString(x+ 94, y+4, V_YELLOWMAP, "SERVER");
 		}
 	}
 }
@@ -2652,15 +2668,16 @@ void HU_DrawDualTabRankings(INT32 x, INT32 y, playersort_t *tab, INT32 scoreline
 		supercheck = supercheckdef;
 
 		strlcpy(name, tab[i].name, 7);
-		if (!(tab[i].num == serverplayer || players[tab[i].num].quittime))
-			HU_drawPing(x+ 113, y, playerpingtable[tab[i].num], false, 0);
+		if (tab[i].num != serverplayer)
+			HU_drawPing(x+ 113, y, players[tab[i].num].quittime ? UINT32_MAX : playerpingtable[tab[i].num], false, 0);
 		//else
 		//	V_DrawSmallString(x+ 94, y+4, V_YELLOWMAP, "SERVER");
 
-		V_DrawString(x + 20, y,
-		             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
-		             | (greycheck ? V_TRANSLUCENT : 0)
-		             | V_ALLOWLOWERCASE, name);
+		if (!players[tab[i].num].quittime || (leveltime / (TICRATE/2) & 1))
+			V_DrawString(x + 20, y,
+			             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
+			             | (greycheck ? V_TRANSLUCENT : 0)
+			             | V_ALLOWLOWERCASE, name);
 
 		if (G_GametypeUsesLives() && !(G_GametypeUsesCoopLives() && (cv_cooplives.value == 0 || cv_cooplives.value == 3)) && (players[tab[i].num].lives != INFLIVES)) //show lives
 			V_DrawRightAlignedString(x, y+4, V_ALLOWLOWERCASE, va("%dx", players[tab[i].num].lives));
@@ -2760,16 +2777,17 @@ static void HU_Draw32TabRankings(INT32 x, INT32 y, playersort_t *tab, INT32 scor
 		strlcpy(name, tab[i].name, 7);
 		if (!splitscreen) // don't draw it on splitscreen,
 		{
-			if (!(tab[i].num == serverplayer || players[tab[i].num].quittime))
-				HU_drawPing(x+ 135, y+1, playerpingtable[tab[i].num], true, 0);
-		//else
-		//	V_DrawSmallString(x+ 129, y+4, V_YELLOWMAP, "HOST");
+			if (tab[i].num != serverplayer)
+				HU_drawPing(x+ 135, y+1, players[tab[i].num].quittime ? UINT32_MAX : playerpingtable[tab[i].num], true, 0);
+			//else
+			//	V_DrawSmallString(x+ 129, y+4, V_YELLOWMAP, "HOST");
 		}
 
-		V_DrawString(x + 10, y,
-		             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
-		             | (greycheck ? 0 : V_TRANSLUCENT)
-		             | V_ALLOWLOWERCASE, name);
+		if (!players[tab[i].num].quittime || (leveltime / (TICRATE/2) & 1))
+			V_DrawString(x + 10, y,
+			             ((tab[i].num == whiteplayer) ? V_YELLOWMAP : 0)
+			             | (greycheck ? 0 : V_TRANSLUCENT)
+			             | V_ALLOWLOWERCASE, name);
 
 		if (G_GametypeUsesLives()) //show lives
 			V_DrawRightAlignedThinString(x-1, y, V_ALLOWLOWERCASE, va("%d", players[tab[i].num].lives));
diff --git a/src/hu_stuff.h b/src/hu_stuff.h
index 63d85f1b81a7637579a1b510a2d979f79368281c..9b7cee2d3053cb63138a08d32dcfb75565ee537e 100644
--- a/src/hu_stuff.h
+++ b/src/hu_stuff.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_addrinfo.c b/src/i_addrinfo.c
index e77774549b4b572aa6f61557b3a5286347c077c2..5dcea100299805644612e5773392062ebca3c3cd 100644
--- a/src/i_addrinfo.c
+++ b/src/i_addrinfo.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2011-2020 by Sonic Team Junior.
+// Copyright (C) 2011-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -20,7 +20,7 @@
 #else
 #include <winsock.h>
 #endif
-#elif !defined (__DJGPP__)
+#else
 #include <sys/socket.h>
 #include <arpa/inet.h>
 #include <netdb.h>
diff --git a/src/i_addrinfo.h b/src/i_addrinfo.h
index 7ae0067195d6f46cd052200ebc109b7905d37e70..397a1969d94c866a10e4030abb74df2d73e4e5b4 100644
--- a/src/i_addrinfo.h
+++ b/src/i_addrinfo.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2011-2020 by Sonic Team Junior.
+// Copyright (C) 2011-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_joy.h b/src/i_joy.h
index 2a2797fc4045c95ce2a3207a8d4caf72a9923fcb..0c7c8dd3f45003909c956c536653bcdfb247f333 100644
--- a/src/i_joy.h
+++ b/src/i_joy.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_net.h b/src/i_net.h
index 5d93f191e5ade02c551384a0624f2a6698abc702..dbc82db65cd94480277e03e23222741741524d48 100644
--- a/src/i_net.h
+++ b/src/i_net.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_sound.h b/src/i_sound.h
index d45c0b323ef4ca34ea936e49b8e598471eb9d290..e38a17626b95dac976295a27c53e5583ce4043fb 100644
--- a/src/i_sound.h
+++ b/src/i_sound.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_system.h b/src/i_system.h
index 12f0d751d14eec081175d3a01fdb8a1d03647bb4..b88ea31772fa1b7f4e63d081faadc8512f1575b7 100644
--- a/src/i_system.h
+++ b/src/i_system.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_tcp.c b/src/i_tcp.c
index ab8a69a9fad3c300c92fa540fa60ae68345aff82..cae97a7d1039349aa570272fe5443d057e4be949 100644
--- a/src/i_tcp.c
+++ b/src/i_tcp.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -64,7 +64,7 @@
 		#include <errno.h>
 		#include <time.h>
 
-		#if (defined (__unix__) && !defined (MSDOS)) || defined(__APPLE__) || defined (UNIXCOMMON)
+		#if defined (__unix__) || defined (__APPLE__) || defined (UNIXCOMMON)
 			#include <sys/time.h>
 		#endif // UNIXCOMMON
 	#endif
@@ -107,15 +107,6 @@
 		#endif
 	#endif // USE_WINSOCK
 
-	#ifdef __DJGPP__
-		#ifdef WATTCP // Alam_GBC: Wattcp may need this
-			#include <tcp.h>
-			#define strerror strerror_s
-		#else // wattcp
-			#include <lsck/lsck.h>
-		#endif // libsocket
-	#endif // djgpp
-
 	typedef union
 	{
 		struct sockaddr     any;
@@ -149,32 +140,22 @@
 
 #include "doomstat.h"
 
-// win32 or djgpp
-#if defined (USE_WINSOCK) || defined (__DJGPP__)
+// win32
+#ifdef USE_WINSOCK
 	// winsock stuff (in winsock a socket is not a file)
 	#define ioctl ioctlsocket
 	#define close closesocket
 #endif
 
 #include "i_addrinfo.h"
-
-#ifdef __DJGPP__
-
-#ifdef WATTCP
 #define SELECTTEST
-#endif
-
-#else
-#define SELECTTEST
-#endif
-
 #define DEFAULTPORT "5029"
 
 #if defined (USE_WINSOCK) && !defined (NONET)
 	typedef SOCKET SOCKET_TYPE;
 	#define ERRSOCKET (SOCKET_ERROR)
 #else
-	#if (defined (__unix__) && !defined (MSDOS)) || defined (__APPLE__) || defined (__HAIKU__)
+	#if defined (__unix__) || defined (__APPLE__) || defined (__HAIKU__)
 		typedef int SOCKET_TYPE;
 	#else
 		typedef unsigned long SOCKET_TYPE;
@@ -184,7 +165,7 @@
 
 #ifndef NONET
 	// define socklen_t in DOS/Windows if it is not already defined
-	#if (defined (WATTCP) && !defined (__libsocket_socklen_t)) || defined (USE_WINSOCK1)
+	#ifdef USE_WINSOCK1
 		typedef int socklen_t;
 	#endif
 	static SOCKET_TYPE mysockets[MAXNETNODES+1] = {ERRSOCKET};
@@ -207,19 +188,6 @@ static const char *serverport_name = DEFAULTPORT;
 static const char *clientport_name;/* any port */
 
 #ifndef NONET
-
-#ifdef WATTCP
-static void wattcp_outch(char s)
-{
-	static char old = '\0';
-	char pr[2] = {s,0};
-	if (s == old && old == ' ') return;
-	else old = s;
-	if (s == '\r') CONS_Printf("\n");
-	else if (s != '\n') CONS_Printf(pr);
-}
-#endif
-
 #ifdef USE_WINSOCK
 // stupid microsoft makes things complicated
 static char *get_WSAErrorStr(int e)
@@ -764,11 +732,7 @@ static SOCKET_TYPE UDP_Bind(int family, struct sockaddr *addr, socklen_t addrlen
 	int opt;
 	socklen_t opts;
 #ifdef FIONBIO
-#ifdef WATTCP
-	char trueval = true;
-#else
 	unsigned long trueval = true;
-#endif
 #endif
 	mysockaddr_t straddr;
 	struct sockaddr_in sin;
@@ -1138,61 +1102,7 @@ boolean I_InitTcpDriver(void)
 		CONS_Debug(DBG_NETPLAY, "WinSock description: %s\n",WSAData.szDescription);
 		CONS_Debug(DBG_NETPLAY, "WinSock System Status: %s\n",WSAData.szSystemStatus);
 #endif
-#ifdef __DJGPP__
-#ifdef WATTCP // Alam_GBC: survive bootp, dhcp, rarp and wattcp/pktdrv from failing to load
-		survive_eth   = 1; // would be needed to not exit if pkt_eth_init() fails
-		survive_bootp = 1; // ditto for BOOTP
-		survive_dhcp  = 1; // ditto for DHCP/RARP
-		survive_rarp  = 1;
-		//_watt_do_exit = false;
-		//_watt_handle_cbreak = false;
-		//_watt_no_config = true;
-		_outch = wattcp_outch;
-		init_misc();
-//#ifdef DEBUGFILE
-		dbug_init();
-//#endif
-		switch (sock_init())
-		{
-			case 0:
-				init_tcp_driver = true;
-				break;
-			case 3:
-				CONS_Debug(DBG_NETPLAY, "No packet driver detected\n");
-				break;
-			case 4:
-				CONS_Debug(DBG_NETPLAY, "Error while talking to packet driver\n");
-				break;
-			case 5:
-				CONS_Debug(DBG_NETPLAY, "BOOTP failed\n");
-				break;
-			case 6:
-				CONS_Debug(DBG_NETPLAY, "DHCP failed\n");
-				break;
-			case 7:
-				CONS_Debug(DBG_NETPLAY, "RARP failed\n");
-				break;
-			case 8:
-				CONS_Debug(DBG_NETPLAY, "TCP/IP failed\n");
-				break;
-			case 9:
-				CONS_Debug(DBG_NETPLAY, "PPPoE login/discovery failed\n");
-				break;
-			default:
-				CONS_Debug(DBG_NETPLAY, "Unknown error with TCP/IP stack\n");
-				break;
-		}
-		hires_timer(0);
-#else // wattcp
-		if (__lsck_init())
-			init_tcp_driver = true;
-		else
-			CONS_Debug(DBG_NETPLAY, "No TCP/IP driver detected\n");
-#endif // libsocket
-#endif // __DJGPP__
-#ifndef __DJGPP__
 		init_tcp_driver = true;
-#endif
 	}
 #endif
 	if (!tcp_was_up && init_tcp_driver)
@@ -1217,10 +1127,8 @@ static void SOCK_CloseSocket(void)
 		if (mysockets[i] != (SOCKET_TYPE)ERRSOCKET
 		 && FD_ISSET(mysockets[i], &masterset))
 		{
-#if !defined (__DJGPP__) || defined (WATTCP)
 			FD_CLR(mysockets[i], &masterset);
 			close(mysockets[i]);
-#endif
 		}
 		mysockets[i] = ERRSOCKET;
 	}
@@ -1237,14 +1145,6 @@ void I_ShutdownTcpDriver(void)
 	WS_addrinfocleanup();
 	WSACleanup();
 #endif
-#ifdef __DJGPP__
-#ifdef WATTCP // wattcp
-	//_outch = NULL;
-	sock_exit();
-#else
-	__lsck_uninit();
-#endif // libsocket
-#endif // __DJGPP__
 	CONS_Printf("shut down\n");
 	init_tcp_driver = false;
 #endif
diff --git a/src/i_tcp.h b/src/i_tcp.h
index 738b8b4d14c9cbd13d8cd8299d1dc560e7cadc78..7857344156448712b934b0989b242e2e6fc554da 100644
--- a/src/i_tcp.h
+++ b/src/i_tcp.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_threads.h b/src/i_threads.h
index ecb9fce6715f3b8c40cc2bd37a0b3caa0d07101b..bc752181f521c447d736368cb0c17b09ae998572 100644
--- a/src/i_threads.h
+++ b/src/i_threads.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/i_video.h b/src/i_video.h
index ab48881d4405036b515ff65988a81bab89e7236a..2d07fcf10700973e4f3aad0b15e9566101ef9ec3 100644
--- a/src/i_video.h
+++ b/src/i_video.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/info.c b/src/info.c
index ee836a3728e4bb0ccea8352b790b7dfdb053136e..efcf1c044141225bf9fd64e1af619548df2c7298 100644
--- a/src/info.c
+++ b/src/info.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -13481,7 +13481,7 @@ mobjinfo_t mobjinfo[NUMMOBJTYPES] =
 		32*FRACUNIT,    // speed
 		30*FRACUNIT,    // radius
 		60*FRACUNIT,    // height
-		0,              // display offset
+		-1,             // display offset
 		100,            // mass
 		0,              // damage
 		sfx_None,       // activesound
@@ -21761,7 +21761,7 @@ skincolor_t skincolors[MAXSKINCOLORS] = {
 	{"Violet",     {0xd0, 0xd1, 0xd2, 0xca, 0xcc, 0xb8, 0xb9, 0xb9, 0xba, 0xa8, 0xa8, 0xa9, 0xa9, 0xfd, 0xfe, 0xfe}, SKINCOLOR_MINT,       6,  V_MAGENTAMAP, true}, // SKINCOLOR_VIOLET
 	{"Lilac",      {0x00, 0xd0, 0xd1, 0xd2, 0xd3, 0xc1, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc5, 0xc6, 0xc6, 0xfe, 0x1f}, SKINCOLOR_VAPOR,      4,  V_ROSYMAP,    true}, // SKINCOLOR_LILAC
 	{"Plum",       {0xc8, 0xd3, 0xd5, 0xd6, 0xd7, 0xce, 0xcf, 0xb9, 0xb9, 0xba, 0xba, 0xa9, 0xa9, 0xa9, 0xfd, 0xfe}, SKINCOLOR_MINT,       7,  V_ROSYMAP,    true}, // SKINCOLOR_PLUM
-	{"Raspberry",  {0xc8, 0xc9, 0xca, 0xcb, 0xcb, 0xcc, 0xcd, 0xcd, 0xce, 0xb9, 0xb9, 0xba, 0xba, 0xbb, 0xfe, 0xfe}, SKINCOLOR_APPLE,      13, V_MAGENTAMAP, true}, // SKINCOLOR_RASPBERRY
+	{"Raspberry",  {0xc8, 0xc9, 0xca, 0xcb, 0xcb, 0xcc, 0xcd, 0xcd, 0xce, 0xb9, 0xb9, 0xba, 0xba, 0xbb, 0xfe, 0xfe}, SKINCOLOR_APPLE,      13, V_ROSYMAP,    true}, // SKINCOLOR_RASPBERRY
 	{"Rosy",       {0xfc, 0xc8, 0xc8, 0xc9, 0xc9, 0xca, 0xca, 0xcb, 0xcb, 0xcc, 0xcc, 0xcd, 0xcd, 0xce, 0xce, 0xcf}, SKINCOLOR_AQUA,       1,  V_ROSYMAP,    true}, // SKINCOLOR_ROSY
 
 	// super
diff --git a/src/info.h b/src/info.h
index 60e9702463fb50db9934d6aea9e6eab28a562983..031a08b4316a00d135cf45a45827ff117181373e 100644
--- a/src/info.h
+++ b/src/info.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/keys.h b/src/keys.h
index 6cdd7956c4f28d7da6141f0744733778b00a2e2e..b19259320e59574effaa3b48ba7a713ac7af0c86 100644
--- a/src/keys.h
+++ b/src/keys.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/libdivide.h b/src/libdivide.h
new file mode 100644
index 0000000000000000000000000000000000000000..1a589c7e5508957b0c4a8e15d37cd02c0402f349
--- /dev/null
+++ b/src/libdivide.h
@@ -0,0 +1,2111 @@
+// libdivide.h - Optimized integer division
+// https://libdivide.com
+//
+// Copyright (C) 2010 - 2019 ridiculous_fish, <libdivide@ridiculousfish.com>
+// Copyright (C) 2016 - 2019 Kim Walisch, <kim.walisch@gmail.com>
+//
+// libdivide is dual-licensed under the Boost or zlib licenses.
+// You may use libdivide under the terms of either of these.
+// See LICENSE.txt in the libdivide source code repository for more details.
+
+
+// NOTICE: This is an altered source version of libdivide.
+// Libdivide is used here under the terms of the zlib license.
+// Here is the zlib license text from https://github.com/ridiculousfish/libdivide/blob/master/LICENSE.txt
+/*
+  zlib License
+  ------------
+
+  Copyright (C) 2010 - 2019 ridiculous_fish, <libdivide@ridiculousfish.com>
+  Copyright (C) 2016 - 2019 Kim Walisch, <kim.walisch@gmail.com>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+// This version of libdivide has been modified for use with SRB2.
+// Changes made include:
+//     - unused parts commented out (to avoid the need to fix C90 compilation issues with them)
+//     - C90 compilation issues fixed with used parts
+//     - use I_Error for errors
+
+#ifndef LIBDIVIDE_H
+#define LIBDIVIDE_H
+
+#define LIBDIVIDE_VERSION "3.0"
+#define LIBDIVIDE_VERSION_MAJOR 3
+#define LIBDIVIDE_VERSION_MINOR 0
+
+#include <stdint.h>
+
+#if defined(__cplusplus)
+    #include <cstdlib>
+    #include <cstdio>
+    #include <type_traits>
+#else
+    #include <stdlib.h>
+    #include <stdio.h>
+#endif
+
+#if defined(LIBDIVIDE_AVX512)
+    #include <immintrin.h>
+#elif defined(LIBDIVIDE_AVX2)
+    #include <immintrin.h>
+#elif defined(LIBDIVIDE_SSE2)
+    #include <emmintrin.h>
+#endif
+
+#if defined(_MSC_VER)
+    #include <intrin.h>
+    // disable warning C4146: unary minus operator applied
+    // to unsigned type, result still unsigned
+    #pragma warning(disable: 4146)
+    #define LIBDIVIDE_VC
+#endif
+
+#if !defined(__has_builtin)
+    #define __has_builtin(x) 0
+#endif
+
+#if defined(__SIZEOF_INT128__)
+    #define HAS_INT128_T
+    // clang-cl on Windows does not yet support 128-bit division
+    #if !(defined(__clang__) && defined(LIBDIVIDE_VC))
+        #define HAS_INT128_DIV
+    #endif
+#endif
+
+#if defined(__x86_64__) || defined(_M_X64)
+    #define LIBDIVIDE_X86_64
+#endif
+
+#if defined(__i386__)
+    #define LIBDIVIDE_i386
+#endif
+
+#if defined(__GNUC__) || defined(__clang__)
+    #define LIBDIVIDE_GCC_STYLE_ASM
+#endif
+
+#if defined(__cplusplus) || defined(LIBDIVIDE_VC)
+    #define LIBDIVIDE_FUNCTION __FUNCTION__
+#else
+    #define LIBDIVIDE_FUNCTION __func__
+#endif
+
+#define LIBDIVIDE_ERROR(msg) \
+    I_Error("libdivide.h:%d: %s(): Error: %s\n", \
+        __LINE__, LIBDIVIDE_FUNCTION, msg);
+
+#if defined(LIBDIVIDE_ASSERTIONS_ON)
+    #define LIBDIVIDE_ASSERT(x) \
+        if (!(x)) { \
+            I_Error("libdivide.h:%d: %s(): Assertion failed: %s\n", \
+                __LINE__, LIBDIVIDE_FUNCTION, #x); \
+        }
+#else
+    #define LIBDIVIDE_ASSERT(x)
+#endif
+
+#ifdef __cplusplus
+namespace libdivide {
+#endif
+
+// pack divider structs to prevent compilers from padding.
+// This reduces memory usage by up to 43% when using a large
+// array of libdivide dividers and improves performance
+// by up to 10% because of reduced memory bandwidth.
+#pragma pack(push, 1)
+
+struct libdivide_u32_t {
+    uint32_t magic;
+    uint8_t more;
+};
+
+struct libdivide_s32_t {
+    int32_t magic;
+    uint8_t more;
+};
+
+struct libdivide_u64_t {
+    uint64_t magic;
+    uint8_t more;
+};
+
+struct libdivide_s64_t {
+    int64_t magic;
+    uint8_t more;
+};
+
+struct libdivide_u32_branchfree_t {
+    uint32_t magic;
+    uint8_t more;
+};
+
+struct libdivide_s32_branchfree_t {
+    int32_t magic;
+    uint8_t more;
+};
+
+struct libdivide_u64_branchfree_t {
+    uint64_t magic;
+    uint8_t more;
+};
+
+struct libdivide_s64_branchfree_t {
+    int64_t magic;
+    uint8_t more;
+};
+
+#pragma pack(pop)
+
+// Explanation of the "more" field:
+//
+// * Bits 0-5 is the shift value (for shift path or mult path).
+// * Bit 6 is the add indicator for mult path.
+// * Bit 7 is set if the divisor is negative. We use bit 7 as the negative
+//   divisor indicator so that we can efficiently use sign extension to
+//   create a bitmask with all bits set to 1 (if the divisor is negative)
+//   or 0 (if the divisor is positive).
+//
+// u32: [0-4] shift value
+//      [5] ignored
+//      [6] add indicator
+//      magic number of 0 indicates shift path
+//
+// s32: [0-4] shift value
+//      [5] ignored
+//      [6] add indicator
+//      [7] indicates negative divisor
+//      magic number of 0 indicates shift path
+//
+// u64: [0-5] shift value
+//      [6] add indicator
+//      magic number of 0 indicates shift path
+//
+// s64: [0-5] shift value
+//      [6] add indicator
+//      [7] indicates negative divisor
+//      magic number of 0 indicates shift path
+//
+// In s32 and s64 branchfree modes, the magic number is negated according to
+// whether the divisor is negated. In branchfree strategy, it is not negated.
+
+enum {
+    LIBDIVIDE_32_SHIFT_MASK = 0x1F,
+    LIBDIVIDE_64_SHIFT_MASK = 0x3F,
+    LIBDIVIDE_ADD_MARKER = 0x40,
+    LIBDIVIDE_NEGATIVE_DIVISOR = 0x80
+};
+
+//static inline struct libdivide_s32_t libdivide_s32_gen(int32_t d);
+static inline struct libdivide_u32_t libdivide_u32_gen(uint32_t d);
+//static inline struct libdivide_s64_t libdivide_s64_gen(int64_t d);
+//static inline struct libdivide_u64_t libdivide_u64_gen(uint64_t d);
+
+/*static inline struct libdivide_s32_branchfree_t libdivide_s32_branchfree_gen(int32_t d);
+static inline struct libdivide_u32_branchfree_t libdivide_u32_branchfree_gen(uint32_t d);
+static inline struct libdivide_s64_branchfree_t libdivide_s64_branchfree_gen(int64_t d);
+static inline struct libdivide_u64_branchfree_t libdivide_u64_branchfree_gen(uint64_t d);*/
+
+//static inline int32_t  libdivide_s32_do(int32_t numer, const struct libdivide_s32_t *denom);
+static inline uint32_t libdivide_u32_do(uint32_t numer, const struct libdivide_u32_t *denom);
+//static inline int64_t  libdivide_s64_do(int64_t numer, const struct libdivide_s64_t *denom);
+//static inline uint64_t libdivide_u64_do(uint64_t numer, const struct libdivide_u64_t *denom);
+
+/*static inline int32_t  libdivide_s32_branchfree_do(int32_t numer, const struct libdivide_s32_branchfree_t *denom);
+static inline uint32_t libdivide_u32_branchfree_do(uint32_t numer, const struct libdivide_u32_branchfree_t *denom);
+static inline int64_t  libdivide_s64_branchfree_do(int64_t numer, const struct libdivide_s64_branchfree_t *denom);
+static inline uint64_t libdivide_u64_branchfree_do(uint64_t numer, const struct libdivide_u64_branchfree_t *denom);*/
+
+/*static inline int32_t  libdivide_s32_recover(const struct libdivide_s32_t *denom);
+static inline uint32_t libdivide_u32_recover(const struct libdivide_u32_t *denom);
+static inline int64_t  libdivide_s64_recover(const struct libdivide_s64_t *denom);
+static inline uint64_t libdivide_u64_recover(const struct libdivide_u64_t *denom);*/
+
+/*static inline int32_t  libdivide_s32_branchfree_recover(const struct libdivide_s32_branchfree_t *denom);
+static inline uint32_t libdivide_u32_branchfree_recover(const struct libdivide_u32_branchfree_t *denom);
+static inline int64_t  libdivide_s64_branchfree_recover(const struct libdivide_s64_branchfree_t *denom);
+static inline uint64_t libdivide_u64_branchfree_recover(const struct libdivide_u64_branchfree_t *denom);*/
+
+//////// Internal Utility Functions
+
+static inline uint32_t libdivide_mullhi_u32(uint32_t x, uint32_t y) {
+    uint64_t xl = x, yl = y;
+    uint64_t rl = xl * yl;
+    return (uint32_t)(rl >> 32);
+}
+
+static inline int32_t libdivide_mullhi_s32(int32_t x, int32_t y) {
+    int64_t xl = x, yl = y;
+    int64_t rl = xl * yl;
+    // needs to be arithmetic shift
+    return (int32_t)(rl >> 32);
+}
+
+static inline uint64_t libdivide_mullhi_u64(uint64_t x, uint64_t y) {
+#if defined(LIBDIVIDE_VC) && \
+    defined(LIBDIVIDE_X86_64)
+    return __umulh(x, y);
+#elif defined(HAS_INT128_T)
+    __uint128_t xl = x, yl = y;
+    __uint128_t rl = xl * yl;
+    return (uint64_t)(rl >> 64);
+#else
+    // full 128 bits are x0 * y0 + (x0 * y1 << 32) + (x1 * y0 << 32) + (x1 * y1 << 64)
+    uint32_t mask = 0xFFFFFFFF;
+    uint32_t x0 = (uint32_t)(x & mask);
+    uint32_t x1 = (uint32_t)(x >> 32);
+    uint32_t y0 = (uint32_t)(y & mask);
+    uint32_t y1 = (uint32_t)(y >> 32);
+    uint32_t x0y0_hi = libdivide_mullhi_u32(x0, y0);
+    uint64_t x0y1 = x0 * (uint64_t)y1;
+    uint64_t x1y0 = x1 * (uint64_t)y0;
+    uint64_t x1y1 = x1 * (uint64_t)y1;
+    uint64_t temp = x1y0 + x0y0_hi;
+    uint64_t temp_lo = temp & mask;
+    uint64_t temp_hi = temp >> 32;
+
+    return x1y1 + temp_hi + ((temp_lo + x0y1) >> 32);
+#endif
+}
+
+static inline int64_t libdivide_mullhi_s64(int64_t x, int64_t y) {
+#if defined(LIBDIVIDE_VC) && \
+    defined(LIBDIVIDE_X86_64)
+    return __mulh(x, y);
+#elif defined(HAS_INT128_T)
+    __int128_t xl = x, yl = y;
+    __int128_t rl = xl * yl;
+    return (int64_t)(rl >> 64);
+#else
+    // full 128 bits are x0 * y0 + (x0 * y1 << 32) + (x1 * y0 << 32) + (x1 * y1 << 64)
+    uint32_t mask = 0xFFFFFFFF;
+    uint32_t x0 = (uint32_t)(x & mask);
+    uint32_t y0 = (uint32_t)(y & mask);
+    int32_t x1 = (int32_t)(x >> 32);
+    int32_t y1 = (int32_t)(y >> 32);
+    uint32_t x0y0_hi = libdivide_mullhi_u32(x0, y0);
+    int64_t t = x1 * (int64_t)y0 + x0y0_hi;
+    int64_t w1 = x0 * (int64_t)y1 + (t & mask);
+
+    return x1 * (int64_t)y1 + (t >> 32) + (w1 >> 32);
+#endif
+}
+
+static inline int32_t libdivide_count_leading_zeros32(uint32_t val) {
+#if defined(__GNUC__) || \
+    __has_builtin(__builtin_clz)
+    // Fast way to count leading zeros
+    return __builtin_clz(val);
+#elif defined(LIBDIVIDE_VC)
+    unsigned long result;
+    if (_BitScanReverse(&result, val)) {
+        return 31 - result;
+    }
+    return 0;
+#else
+    if (val == 0)
+        return 32;
+    int32_t result = 8;
+    uint32_t hi = 0xFFU << 24;
+    while ((val & hi) == 0) {
+        hi >>= 8;
+        result += 8;
+    }
+    while (val & hi) {
+        result -= 1;
+        hi <<= 1;
+    }
+    return result;
+#endif
+}
+
+static inline int32_t libdivide_count_leading_zeros64(uint64_t val) {
+#if defined(__GNUC__) || \
+    __has_builtin(__builtin_clzll)
+    // Fast way to count leading zeros
+    return __builtin_clzll(val);
+#elif defined(LIBDIVIDE_VC) && defined(_WIN64)
+    unsigned long result;
+    if (_BitScanReverse64(&result, val)) {
+        return 63 - result;
+    }
+    return 0;
+#else
+    uint32_t hi = val >> 32;
+    uint32_t lo = val & 0xFFFFFFFF;
+    if (hi != 0) return libdivide_count_leading_zeros32(hi);
+    return 32 + libdivide_count_leading_zeros32(lo);
+#endif
+}
+
+// libdivide_64_div_32_to_32: divides a 64-bit uint {u1, u0} by a 32-bit
+// uint {v}. The result must fit in 32 bits.
+// Returns the quotient directly and the remainder in *r
+static inline uint32_t libdivide_64_div_32_to_32(uint32_t u1, uint32_t u0, uint32_t v, uint32_t *r) {
+#if (defined(LIBDIVIDE_i386) || defined(LIBDIVIDE_X86_64)) && \
+     defined(LIBDIVIDE_GCC_STYLE_ASM)
+    uint32_t result;
+    __asm__("divl %[v]"
+            : "=a"(result), "=d"(*r)
+            : [v] "r"(v), "a"(u0), "d"(u1)
+            );
+    return result;
+#else
+    uint64_t n = ((uint64_t)u1 << 32) | u0;
+    uint32_t result = (uint32_t)(n / v);
+    *r = (uint32_t)(n - result * (uint64_t)v);
+    return result;
+#endif
+}
+
+// libdivide_128_div_64_to_64: divides a 128-bit uint {u1, u0} by a 64-bit
+// uint {v}. The result must fit in 64 bits.
+// Returns the quotient directly and the remainder in *r
+/*static uint64_t libdivide_128_div_64_to_64(uint64_t u1, uint64_t u0, uint64_t v, uint64_t *r) {
+#if defined(LIBDIVIDE_X86_64) && \
+    defined(LIBDIVIDE_GCC_STYLE_ASM)
+    uint64_t result;
+    __asm__("divq %[v]"
+            : "=a"(result), "=d"(*r)
+            : [v] "r"(v), "a"(u0), "d"(u1)
+            );
+    return result;
+#elif defined(HAS_INT128_T) && \
+      defined(HAS_INT128_DIV)
+    __uint128_t n = ((__uint128_t)u1 << 64) | u0;
+    uint64_t result = (uint64_t)(n / v);
+    *r = (uint64_t)(n - result * (__uint128_t)v);
+    return result;
+#else
+    // Code taken from Hacker's Delight:
+    // http://www.hackersdelight.org/HDcode/divlu.c.
+    // License permits inclusion here per:
+    // http://www.hackersdelight.org/permissions.htm
+
+    const uint64_t b = (1ULL << 32); // Number base (32 bits)
+    uint64_t un1, un0; // Norm. dividend LSD's
+    uint64_t vn1, vn0; // Norm. divisor digits
+    uint64_t q1, q0; // Quotient digits
+    uint64_t un64, un21, un10; // Dividend digit pairs
+    uint64_t rhat; // A remainder
+    int32_t s; // Shift amount for norm
+
+    // If overflow, set rem. to an impossible value,
+    // and return the largest possible quotient
+    if (u1 >= v) {
+        *r = (uint64_t) -1;
+        return (uint64_t) -1;
+    }
+
+    // count leading zeros
+    s = libdivide_count_leading_zeros64(v);
+    if (s > 0) {
+        // Normalize divisor
+        v = v << s;
+        un64 = (u1 << s) | (u0 >> (64 - s));
+        un10 = u0 << s; // Shift dividend left
+    } else {
+        // Avoid undefined behavior of (u0 >> 64).
+        // The behavior is undefined if the right operand is
+        // negative, or greater than or equal to the length
+        // in bits of the promoted left operand.
+        un64 = u1;
+        un10 = u0;
+    }
+
+    // Break divisor up into two 32-bit digits
+    vn1 = v >> 32;
+    vn0 = v & 0xFFFFFFFF;
+
+    // Break right half of dividend into two digits
+    un1 = un10 >> 32;
+    un0 = un10 & 0xFFFFFFFF;
+
+    // Compute the first quotient digit, q1
+    q1 = un64 / vn1;
+    rhat = un64 - q1 * vn1;
+
+    while (q1 >= b || q1 * vn0 > b * rhat + un1) {
+        q1 = q1 - 1;
+        rhat = rhat + vn1;
+        if (rhat >= b)
+            break;
+    }
+
+     // Multiply and subtract
+    un21 = un64 * b + un1 - q1 * v;
+
+    // Compute the second quotient digit
+    q0 = un21 / vn1;
+    rhat = un21 - q0 * vn1;
+
+    while (q0 >= b || q0 * vn0 > b * rhat + un0) {
+        q0 = q0 - 1;
+        rhat = rhat + vn1;
+        if (rhat >= b)
+            break;
+    }
+
+    *r = (un21 * b + un0 - q0 * v) >> s;
+    return q1 * b + q0;
+#endif
+}*/
+
+// Bitshift a u128 in place, left (signed_shift > 0) or right (signed_shift < 0)
+static inline void libdivide_u128_shift(uint64_t *u1, uint64_t *u0, int32_t signed_shift) {
+    if (signed_shift > 0) {
+        uint32_t shift = signed_shift;
+        *u1 <<= shift;
+        *u1 |= *u0 >> (64 - shift);
+        *u0 <<= shift;
+    }
+    else if (signed_shift < 0) {
+        uint32_t shift = -signed_shift;
+        *u0 >>= shift;
+        *u0 |= *u1 << (64 - shift);
+        *u1 >>= shift;
+    }
+}
+
+// Computes a 128 / 128 -> 64 bit division, with a 128 bit remainder.
+/*static uint64_t libdivide_128_div_128_to_64(uint64_t u_hi, uint64_t u_lo, uint64_t v_hi, uint64_t v_lo, uint64_t *r_hi, uint64_t *r_lo) {
+#if defined(HAS_INT128_T) && \
+    defined(HAS_INT128_DIV)
+    __uint128_t ufull = u_hi;
+    __uint128_t vfull = v_hi;
+    ufull = (ufull << 64) | u_lo;
+    vfull = (vfull << 64) | v_lo;
+    uint64_t res = (uint64_t)(ufull / vfull);
+    __uint128_t remainder = ufull - (vfull * res);
+    *r_lo = (uint64_t)remainder;
+    *r_hi = (uint64_t)(remainder >> 64);
+    return res;
+#else
+    // Adapted from "Unsigned Doubleword Division" in Hacker's Delight
+    // We want to compute u / v
+    typedef struct { uint64_t hi; uint64_t lo; } u128_t;
+    u128_t u = {u_hi, u_lo};
+    u128_t v = {v_hi, v_lo};
+
+    if (v.hi == 0) {
+        // divisor v is a 64 bit value, so we just need one 128/64 division
+        // Note that we are simpler than Hacker's Delight here, because we know
+        // the quotient fits in 64 bits whereas Hacker's Delight demands a full
+        // 128 bit quotient
+        *r_hi = 0;
+        return libdivide_128_div_64_to_64(u.hi, u.lo, v.lo, r_lo);
+    }
+    // Here v >= 2**64
+    // We know that v.hi != 0, so count leading zeros is OK
+    // We have 0 <= n <= 63
+    uint32_t n = libdivide_count_leading_zeros64(v.hi);
+
+    // Normalize the divisor so its MSB is 1
+    u128_t v1t = v;
+    libdivide_u128_shift(&v1t.hi, &v1t.lo, n);
+    uint64_t v1 = v1t.hi; // i.e. v1 = v1t >> 64
+
+    // To ensure no overflow
+    u128_t u1 = u;
+    libdivide_u128_shift(&u1.hi, &u1.lo, -1);
+
+    // Get quotient from divide unsigned insn.
+    uint64_t rem_ignored;
+    uint64_t q1 = libdivide_128_div_64_to_64(u1.hi, u1.lo, v1, &rem_ignored);
+
+    // Undo normalization and division of u by 2.
+    u128_t q0 = {0, q1};
+    libdivide_u128_shift(&q0.hi, &q0.lo, n);
+    libdivide_u128_shift(&q0.hi, &q0.lo, -63);
+
+    // Make q0 correct or too small by 1
+    // Equivalent to `if (q0 != 0) q0 = q0 - 1;`
+    if (q0.hi != 0 || q0.lo != 0) {
+        q0.hi -= (q0.lo == 0); // borrow
+        q0.lo -= 1;
+    }
+
+    // Now q0 is correct.
+    // Compute q0 * v as q0v
+    // = (q0.hi << 64 + q0.lo) * (v.hi << 64 + v.lo)
+    // = (q0.hi * v.hi << 128) + (q0.hi * v.lo << 64) +
+    //   (q0.lo * v.hi <<  64) + q0.lo * v.lo)
+    // Each term is 128 bit
+    // High half of full product (upper 128 bits!) are dropped
+    u128_t q0v = {0, 0};
+    q0v.hi = q0.hi*v.lo + q0.lo*v.hi + libdivide_mullhi_u64(q0.lo, v.lo);
+    q0v.lo = q0.lo*v.lo;
+
+    // Compute u - q0v as u_q0v
+    // This is the remainder
+    u128_t u_q0v = u;
+    u_q0v.hi -= q0v.hi + (u.lo < q0v.lo); // second term is borrow
+    u_q0v.lo -= q0v.lo;
+
+    // Check if u_q0v >= v
+    // This checks if our remainder is larger than the divisor
+    if ((u_q0v.hi > v.hi) ||
+        (u_q0v.hi == v.hi && u_q0v.lo >= v.lo)) {
+        // Increment q0
+        q0.lo += 1;
+        q0.hi += (q0.lo == 0); // carry
+
+        // Subtract v from remainder
+        u_q0v.hi -= v.hi + (u_q0v.lo < v.lo);
+        u_q0v.lo -= v.lo;
+    }
+
+    *r_hi = u_q0v.hi;
+    *r_lo = u_q0v.lo;
+
+    LIBDIVIDE_ASSERT(q0.hi == 0);
+    return q0.lo;
+#endif
+}*/
+
+////////// UINT32
+
+static inline struct libdivide_u32_t libdivide_internal_u32_gen(uint32_t d, int branchfree) {
+    struct libdivide_u32_t result;
+    uint32_t floor_log_2_d;
+
+    if (d == 0) {
+        LIBDIVIDE_ERROR("divider must be != 0");
+    }
+
+    floor_log_2_d = 31 - libdivide_count_leading_zeros32(d);
+
+    // Power of 2
+    if ((d & (d - 1)) == 0) {
+        // We need to subtract 1 from the shift value in case of an unsigned
+        // branchfree divider because there is a hardcoded right shift by 1
+        // in its division algorithm. Because of this we also need to add back
+        // 1 in its recovery algorithm.
+        result.magic = 0;
+        result.more = (uint8_t)(floor_log_2_d - (branchfree != 0));
+    } else {
+        uint8_t more;
+        uint32_t rem, proposed_m;
+        uint32_t e;
+        proposed_m = libdivide_64_div_32_to_32(1U << floor_log_2_d, 0, d, &rem);
+
+        LIBDIVIDE_ASSERT(rem > 0 && rem < d);
+        e = d - rem;
+
+        // This power works if e < 2**floor_log_2_d.
+        if (!branchfree && (e < (1U << floor_log_2_d))) {
+            // This power works
+            more = floor_log_2_d;
+        } else {
+            // We have to use the general 33-bit algorithm.  We need to compute
+            // (2**power) / d. However, we already have (2**(power-1))/d and
+            // its remainder.  By doubling both, and then correcting the
+            // remainder, we can compute the larger division.
+            // don't care about overflow here - in fact, we expect it
+            const uint32_t twice_rem = rem + rem;
+            proposed_m += proposed_m;
+            if (twice_rem >= d || twice_rem < rem) proposed_m += 1;
+            more = floor_log_2_d | LIBDIVIDE_ADD_MARKER;
+        }
+        result.magic = 1 + proposed_m;
+        result.more = more;
+        // result.more's shift should in general be ceil_log_2_d. But if we
+        // used the smaller power, we subtract one from the shift because we're
+        // using the smaller power. If we're using the larger power, we
+        // subtract one from the shift because it's taken care of by the add
+        // indicator. So floor_log_2_d happens to be correct in both cases.
+    }
+    return result;
+}
+
+struct libdivide_u32_t libdivide_u32_gen(uint32_t d) {
+    return libdivide_internal_u32_gen(d, 0);
+}
+
+/*struct libdivide_u32_branchfree_t libdivide_u32_branchfree_gen(uint32_t d) {
+    if (d == 1) {
+        LIBDIVIDE_ERROR("branchfree divider must be != 1");
+    }
+    struct libdivide_u32_t tmp = libdivide_internal_u32_gen(d, 1);
+    struct libdivide_u32_branchfree_t ret = {tmp.magic, (uint8_t)(tmp.more & LIBDIVIDE_32_SHIFT_MASK)};
+    return ret;
+}*/
+
+uint32_t libdivide_u32_do(uint32_t numer, const struct libdivide_u32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return numer >> more;
+    }
+    else {
+        uint32_t q = libdivide_mullhi_u32(denom->magic, numer);
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            uint32_t t = ((numer - q) >> 1) + q;
+            return t >> (more & LIBDIVIDE_32_SHIFT_MASK);
+        }
+        else {
+            // All upper bits are 0,
+            // don't need to mask them off.
+            return q >> more;
+        }
+    }
+}
+
+/*uint32_t libdivide_u32_branchfree_do(uint32_t numer, const struct libdivide_u32_branchfree_t *denom) {
+    uint32_t q = libdivide_mullhi_u32(denom->magic, numer);
+    uint32_t t = ((numer - q) >> 1) + q;
+    return t >> denom->more;
+}
+
+uint32_t libdivide_u32_recover(const struct libdivide_u32_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+
+    if (!denom->magic) {
+        return 1U << shift;
+    } else if (!(more & LIBDIVIDE_ADD_MARKER)) {
+        // We compute q = n/d = n*m / 2^(32 + shift)
+        // Therefore we have d = 2^(32 + shift) / m
+        // We need to ceil it.
+        // We know d is not a power of 2, so m is not a power of 2,
+        // so we can just add 1 to the floor
+        uint32_t hi_dividend = 1U << shift;
+        uint32_t rem_ignored;
+        return 1 + libdivide_64_div_32_to_32(hi_dividend, 0, denom->magic, &rem_ignored);
+    } else {
+        // Here we wish to compute d = 2^(32+shift+1)/(m+2^32).
+        // Notice (m + 2^32) is a 33 bit number. Use 64 bit division for now
+        // Also note that shift may be as high as 31, so shift + 1 will
+        // overflow. So we have to compute it as 2^(32+shift)/(m+2^32), and
+        // then double the quotient and remainder.
+        uint64_t half_n = 1ULL << (32 + shift);
+        uint64_t d = (1ULL << 32) | denom->magic;
+        // Note that the quotient is guaranteed <= 32 bits, but the remainder
+        // may need 33!
+        uint32_t half_q = (uint32_t)(half_n / d);
+        uint64_t rem = half_n % d;
+        // We computed 2^(32+shift)/(m+2^32)
+        // Need to double it, and then add 1 to the quotient if doubling th
+        // remainder would increase the quotient.
+        // Note that rem<<1 cannot overflow, since rem < d and d is 33 bits
+        uint32_t full_q = half_q + half_q + ((rem<<1) >= d);
+
+        // We rounded down in gen (hence +1)
+        return full_q + 1;
+    }
+}
+
+uint32_t libdivide_u32_branchfree_recover(const struct libdivide_u32_branchfree_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+
+    if (!denom->magic) {
+        return 1U << (shift + 1);
+    } else {
+        // Here we wish to compute d = 2^(32+shift+1)/(m+2^32).
+        // Notice (m + 2^32) is a 33 bit number. Use 64 bit division for now
+        // Also note that shift may be as high as 31, so shift + 1 will
+        // overflow. So we have to compute it as 2^(32+shift)/(m+2^32), and
+        // then double the quotient and remainder.
+        uint64_t half_n = 1ULL << (32 + shift);
+        uint64_t d = (1ULL << 32) | denom->magic;
+        // Note that the quotient is guaranteed <= 32 bits, but the remainder
+        // may need 33!
+        uint32_t half_q = (uint32_t)(half_n / d);
+        uint64_t rem = half_n % d;
+        // We computed 2^(32+shift)/(m+2^32)
+        // Need to double it, and then add 1 to the quotient if doubling th
+        // remainder would increase the quotient.
+        // Note that rem<<1 cannot overflow, since rem < d and d is 33 bits
+        uint32_t full_q = half_q + half_q + ((rem<<1) >= d);
+
+        // We rounded down in gen (hence +1)
+        return full_q + 1;
+    }
+}*/
+
+/////////// UINT64
+
+/*static inline struct libdivide_u64_t libdivide_internal_u64_gen(uint64_t d, int branchfree) {
+    if (d == 0) {
+        LIBDIVIDE_ERROR("divider must be != 0");
+    }
+
+    struct libdivide_u64_t result;
+    uint32_t floor_log_2_d = 63 - libdivide_count_leading_zeros64(d);
+
+    // Power of 2
+    if ((d & (d - 1)) == 0) {
+        // We need to subtract 1 from the shift value in case of an unsigned
+        // branchfree divider because there is a hardcoded right shift by 1
+        // in its division algorithm. Because of this we also need to add back
+        // 1 in its recovery algorithm.
+        result.magic = 0;
+        result.more = (uint8_t)(floor_log_2_d - (branchfree != 0));
+    } else {
+        uint64_t proposed_m, rem;
+        uint8_t more;
+        // (1 << (64 + floor_log_2_d)) / d
+        proposed_m = libdivide_128_div_64_to_64(1ULL << floor_log_2_d, 0, d, &rem);
+
+        LIBDIVIDE_ASSERT(rem > 0 && rem < d);
+        const uint64_t e = d - rem;
+
+        // This power works if e < 2**floor_log_2_d.
+        if (!branchfree && e < (1ULL << floor_log_2_d)) {
+            // This power works
+            more = floor_log_2_d;
+        } else {
+            // We have to use the general 65-bit algorithm.  We need to compute
+            // (2**power) / d. However, we already have (2**(power-1))/d and
+            // its remainder. By doubling both, and then correcting the
+            // remainder, we can compute the larger division.
+            // don't care about overflow here - in fact, we expect it
+            proposed_m += proposed_m;
+            const uint64_t twice_rem = rem + rem;
+            if (twice_rem >= d || twice_rem < rem) proposed_m += 1;
+                more = floor_log_2_d | LIBDIVIDE_ADD_MARKER;
+        }
+        result.magic = 1 + proposed_m;
+        result.more = more;
+        // result.more's shift should in general be ceil_log_2_d. But if we
+        // used the smaller power, we subtract one from the shift because we're
+        // using the smaller power. If we're using the larger power, we
+        // subtract one from the shift because it's taken care of by the add
+        // indicator. So floor_log_2_d happens to be correct in both cases,
+        // which is why we do it outside of the if statement.
+    }
+    return result;
+}
+
+struct libdivide_u64_t libdivide_u64_gen(uint64_t d) {
+    return libdivide_internal_u64_gen(d, 0);
+}
+
+struct libdivide_u64_branchfree_t libdivide_u64_branchfree_gen(uint64_t d) {
+    if (d == 1) {
+        LIBDIVIDE_ERROR("branchfree divider must be != 1");
+    }
+    struct libdivide_u64_t tmp = libdivide_internal_u64_gen(d, 1);
+    struct libdivide_u64_branchfree_t ret = {tmp.magic, (uint8_t)(tmp.more & LIBDIVIDE_64_SHIFT_MASK)};
+    return ret;
+}
+
+uint64_t libdivide_u64_do(uint64_t numer, const struct libdivide_u64_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return numer >> more;
+    }
+    else {
+        uint64_t q = libdivide_mullhi_u64(denom->magic, numer);
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            uint64_t t = ((numer - q) >> 1) + q;
+            return t >> (more & LIBDIVIDE_64_SHIFT_MASK);
+        }
+        else {
+             // All upper bits are 0,
+             // don't need to mask them off.
+            return q >> more;
+        }
+    }
+}
+
+uint64_t libdivide_u64_branchfree_do(uint64_t numer, const struct libdivide_u64_branchfree_t *denom) {
+    uint64_t q = libdivide_mullhi_u64(denom->magic, numer);
+    uint64_t t = ((numer - q) >> 1) + q;
+    return t >> denom->more;
+}
+
+uint64_t libdivide_u64_recover(const struct libdivide_u64_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+
+    if (!denom->magic) {
+        return 1ULL << shift;
+    } else if (!(more & LIBDIVIDE_ADD_MARKER)) {
+        // We compute q = n/d = n*m / 2^(64 + shift)
+        // Therefore we have d = 2^(64 + shift) / m
+        // We need to ceil it.
+        // We know d is not a power of 2, so m is not a power of 2,
+        // so we can just add 1 to the floor
+        uint64_t hi_dividend = 1ULL << shift;
+        uint64_t rem_ignored;
+        return 1 + libdivide_128_div_64_to_64(hi_dividend, 0, denom->magic, &rem_ignored);
+    } else {
+        // Here we wish to compute d = 2^(64+shift+1)/(m+2^64).
+        // Notice (m + 2^64) is a 65 bit number. This gets hairy. See
+        // libdivide_u32_recover for more on what we do here.
+        // TODO: do something better than 128 bit math
+
+        // Full n is a (potentially) 129 bit value
+        // half_n is a 128 bit value
+        // Compute the hi half of half_n. Low half is 0.
+        uint64_t half_n_hi = 1ULL << shift, half_n_lo = 0;
+        // d is a 65 bit value. The high bit is always set to 1.
+        const uint64_t d_hi = 1, d_lo = denom->magic;
+        // Note that the quotient is guaranteed <= 64 bits,
+        // but the remainder may need 65!
+        uint64_t r_hi, r_lo;
+        uint64_t half_q = libdivide_128_div_128_to_64(half_n_hi, half_n_lo, d_hi, d_lo, &r_hi, &r_lo);
+        // We computed 2^(64+shift)/(m+2^64)
+        // Double the remainder ('dr') and check if that is larger than d
+        // Note that d is a 65 bit value, so r1 is small and so r1 + r1
+        // cannot overflow
+        uint64_t dr_lo = r_lo + r_lo;
+        uint64_t dr_hi = r_hi + r_hi + (dr_lo < r_lo); // last term is carry
+        int dr_exceeds_d = (dr_hi > d_hi) || (dr_hi == d_hi && dr_lo >= d_lo);
+        uint64_t full_q = half_q + half_q + (dr_exceeds_d ? 1 : 0);
+        return full_q + 1;
+    }
+}
+
+uint64_t libdivide_u64_branchfree_recover(const struct libdivide_u64_branchfree_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+
+    if (!denom->magic) {
+        return 1ULL << (shift + 1);
+    } else {
+        // Here we wish to compute d = 2^(64+shift+1)/(m+2^64).
+        // Notice (m + 2^64) is a 65 bit number. This gets hairy. See
+        // libdivide_u32_recover for more on what we do here.
+        // TODO: do something better than 128 bit math
+
+        // Full n is a (potentially) 129 bit value
+        // half_n is a 128 bit value
+        // Compute the hi half of half_n. Low half is 0.
+        uint64_t half_n_hi = 1ULL << shift, half_n_lo = 0;
+        // d is a 65 bit value. The high bit is always set to 1.
+        const uint64_t d_hi = 1, d_lo = denom->magic;
+        // Note that the quotient is guaranteed <= 64 bits,
+        // but the remainder may need 65!
+        uint64_t r_hi, r_lo;
+        uint64_t half_q = libdivide_128_div_128_to_64(half_n_hi, half_n_lo, d_hi, d_lo, &r_hi, &r_lo);
+        // We computed 2^(64+shift)/(m+2^64)
+        // Double the remainder ('dr') and check if that is larger than d
+        // Note that d is a 65 bit value, so r1 is small and so r1 + r1
+        // cannot overflow
+        uint64_t dr_lo = r_lo + r_lo;
+        uint64_t dr_hi = r_hi + r_hi + (dr_lo < r_lo); // last term is carry
+        int dr_exceeds_d = (dr_hi > d_hi) || (dr_hi == d_hi && dr_lo >= d_lo);
+        uint64_t full_q = half_q + half_q + (dr_exceeds_d ? 1 : 0);
+        return full_q + 1;
+    }
+}*/
+
+/////////// SINT32
+
+/*static inline struct libdivide_s32_t libdivide_internal_s32_gen(int32_t d, int branchfree) {
+    if (d == 0) {
+        LIBDIVIDE_ERROR("divider must be != 0");
+    }
+
+    struct libdivide_s32_t result;
+
+    // If d is a power of 2, or negative a power of 2, we have to use a shift.
+    // This is especially important because the magic algorithm fails for -1.
+    // To check if d is a power of 2 or its inverse, it suffices to check
+    // whether its absolute value has exactly one bit set. This works even for
+    // INT_MIN, because abs(INT_MIN) == INT_MIN, and INT_MIN has one bit set
+    // and is a power of 2.
+    uint32_t ud = (uint32_t)d;
+    uint32_t absD = (d < 0) ? -ud : ud;
+    uint32_t floor_log_2_d = 31 - libdivide_count_leading_zeros32(absD);
+    // check if exactly one bit is set,
+    // don't care if absD is 0 since that's divide by zero
+    if ((absD & (absD - 1)) == 0) {
+        // Branchfree and normal paths are exactly the same
+        result.magic = 0;
+        result.more = floor_log_2_d | (d < 0 ? LIBDIVIDE_NEGATIVE_DIVISOR : 0);
+    } else {
+        LIBDIVIDE_ASSERT(floor_log_2_d >= 1);
+
+        uint8_t more;
+        // the dividend here is 2**(floor_log_2_d + 31), so the low 32 bit word
+        // is 0 and the high word is floor_log_2_d - 1
+        uint32_t rem, proposed_m;
+        proposed_m = libdivide_64_div_32_to_32(1U << (floor_log_2_d - 1), 0, absD, &rem);
+        const uint32_t e = absD - rem;
+
+        // We are going to start with a power of floor_log_2_d - 1.
+        // This works if works if e < 2**floor_log_2_d.
+        if (!branchfree && e < (1U << floor_log_2_d)) {
+            // This power works
+            more = floor_log_2_d - 1;
+        } else {
+            // We need to go one higher. This should not make proposed_m
+            // overflow, but it will make it negative when interpreted as an
+            // int32_t.
+            proposed_m += proposed_m;
+            const uint32_t twice_rem = rem + rem;
+            if (twice_rem >= absD || twice_rem < rem) proposed_m += 1;
+            more = floor_log_2_d | LIBDIVIDE_ADD_MARKER;
+        }
+
+        proposed_m += 1;
+        int32_t magic = (int32_t)proposed_m;
+
+        // Mark if we are negative. Note we only negate the magic number in the
+        // branchfull case.
+        if (d < 0) {
+            more |= LIBDIVIDE_NEGATIVE_DIVISOR;
+            if (!branchfree) {
+                magic = -magic;
+            }
+        }
+
+        result.more = more;
+        result.magic = magic;
+    }
+    return result;
+}
+
+struct libdivide_s32_t libdivide_s32_gen(int32_t d) {
+    return libdivide_internal_s32_gen(d, 0);
+}
+
+struct libdivide_s32_branchfree_t libdivide_s32_branchfree_gen(int32_t d) {
+    struct libdivide_s32_t tmp = libdivide_internal_s32_gen(d, 1);
+    struct libdivide_s32_branchfree_t result = {tmp.magic, tmp.more};
+    return result;
+}
+
+int32_t libdivide_s32_do(int32_t numer, const struct libdivide_s32_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+
+    if (!denom->magic) {
+        uint32_t sign = (int8_t)more >> 7;
+        uint32_t mask = (1U << shift) - 1;
+        uint32_t uq = numer + ((numer >> 31) & mask);
+        int32_t q = (int32_t)uq;
+        q >>= shift;
+        q = (q ^ sign) - sign;
+        return q;
+    } else {
+        uint32_t uq = (uint32_t)libdivide_mullhi_s32(denom->magic, numer);
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // must be arithmetic shift and then sign extend
+            int32_t sign = (int8_t)more >> 7;
+            // q += (more < 0 ? -numer : numer)
+            // cast required to avoid UB
+            uq += ((uint32_t)numer ^ sign) - sign;
+        }
+        int32_t q = (int32_t)uq;
+        q >>= shift;
+        q += (q < 0);
+        return q;
+    }
+}
+
+int32_t libdivide_s32_branchfree_do(int32_t numer, const struct libdivide_s32_branchfree_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+    // must be arithmetic shift and then sign extend
+    int32_t sign = (int8_t)more >> 7;
+    int32_t magic = denom->magic;
+    int32_t q = libdivide_mullhi_s32(magic, numer);
+    q += numer;
+
+    // If q is non-negative, we have nothing to do
+    // If q is negative, we want to add either (2**shift)-1 if d is a power of
+    // 2, or (2**shift) if it is not a power of 2
+    uint32_t is_power_of_2 = (magic == 0);
+    uint32_t q_sign = (uint32_t)(q >> 31);
+    q += q_sign & ((1U << shift) - is_power_of_2);
+
+    // Now arithmetic right shift
+    q >>= shift;
+    // Negate if needed
+    q = (q ^ sign) - sign;
+
+    return q;
+}
+
+int32_t libdivide_s32_recover(const struct libdivide_s32_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+    if (!denom->magic) {
+        uint32_t absD = 1U << shift;
+        if (more & LIBDIVIDE_NEGATIVE_DIVISOR) {
+            absD = -absD;
+        }
+        return (int32_t)absD;
+    } else {
+        // Unsigned math is much easier
+        // We negate the magic number only in the branchfull case, and we don't
+        // know which case we're in. However we have enough information to
+        // determine the correct sign of the magic number. The divisor was
+        // negative if LIBDIVIDE_NEGATIVE_DIVISOR is set. If ADD_MARKER is set,
+        // the magic number's sign is opposite that of the divisor.
+        // We want to compute the positive magic number.
+        int negative_divisor = (more & LIBDIVIDE_NEGATIVE_DIVISOR);
+        int magic_was_negated = (more & LIBDIVIDE_ADD_MARKER)
+            ? denom->magic > 0 : denom->magic < 0;
+
+        // Handle the power of 2 case (including branchfree)
+        if (denom->magic == 0) {
+            int32_t result = 1U << shift;
+            return negative_divisor ? -result : result;
+        }
+
+        uint32_t d = (uint32_t)(magic_was_negated ? -denom->magic : denom->magic);
+        uint64_t n = 1ULL << (32 + shift); // this shift cannot exceed 30
+        uint32_t q = (uint32_t)(n / d);
+        int32_t result = (int32_t)q;
+        result += 1;
+        return negative_divisor ? -result : result;
+    }
+}
+
+int32_t libdivide_s32_branchfree_recover(const struct libdivide_s32_branchfree_t *denom) {
+    return libdivide_s32_recover((const struct libdivide_s32_t *)denom);
+}*/
+
+///////////// SINT64
+
+/*static inline struct libdivide_s64_t libdivide_internal_s64_gen(int64_t d, int branchfree) {
+    if (d == 0) {
+        LIBDIVIDE_ERROR("divider must be != 0");
+    }
+
+    struct libdivide_s64_t result;
+
+    // If d is a power of 2, or negative a power of 2, we have to use a shift.
+    // This is especially important because the magic algorithm fails for -1.
+    // To check if d is a power of 2 or its inverse, it suffices to check
+    // whether its absolute value has exactly one bit set.  This works even for
+    // INT_MIN, because abs(INT_MIN) == INT_MIN, and INT_MIN has one bit set
+    // and is a power of 2.
+    uint64_t ud = (uint64_t)d;
+    uint64_t absD = (d < 0) ? -ud : ud;
+    uint32_t floor_log_2_d = 63 - libdivide_count_leading_zeros64(absD);
+    // check if exactly one bit is set,
+    // don't care if absD is 0 since that's divide by zero
+    if ((absD & (absD - 1)) == 0) {
+        // Branchfree and non-branchfree cases are the same
+        result.magic = 0;
+        result.more = floor_log_2_d | (d < 0 ? LIBDIVIDE_NEGATIVE_DIVISOR : 0);
+    } else {
+        // the dividend here is 2**(floor_log_2_d + 63), so the low 64 bit word
+        // is 0 and the high word is floor_log_2_d - 1
+        uint8_t more;
+        uint64_t rem, proposed_m;
+        proposed_m = libdivide_128_div_64_to_64(1ULL << (floor_log_2_d - 1), 0, absD, &rem);
+        const uint64_t e = absD - rem;
+
+        // We are going to start with a power of floor_log_2_d - 1.
+        // This works if works if e < 2**floor_log_2_d.
+        if (!branchfree && e < (1ULL << floor_log_2_d)) {
+            // This power works
+            more = floor_log_2_d - 1;
+        } else {
+            // We need to go one higher. This should not make proposed_m
+            // overflow, but it will make it negative when interpreted as an
+            // int32_t.
+            proposed_m += proposed_m;
+            const uint64_t twice_rem = rem + rem;
+            if (twice_rem >= absD || twice_rem < rem) proposed_m += 1;
+            // note that we only set the LIBDIVIDE_NEGATIVE_DIVISOR bit if we
+            // also set ADD_MARKER this is an annoying optimization that
+            // enables algorithm #4 to avoid the mask. However we always set it
+            // in the branchfree case
+            more = floor_log_2_d | LIBDIVIDE_ADD_MARKER;
+        }
+        proposed_m += 1;
+        int64_t magic = (int64_t)proposed_m;
+
+        // Mark if we are negative
+        if (d < 0) {
+            more |= LIBDIVIDE_NEGATIVE_DIVISOR;
+            if (!branchfree) {
+                magic = -magic;
+            }
+        }
+
+        result.more = more;
+        result.magic = magic;
+    }
+    return result;
+}
+
+struct libdivide_s64_t libdivide_s64_gen(int64_t d) {
+    return libdivide_internal_s64_gen(d, 0);
+}
+
+struct libdivide_s64_branchfree_t libdivide_s64_branchfree_gen(int64_t d) {
+    struct libdivide_s64_t tmp = libdivide_internal_s64_gen(d, 1);
+    struct libdivide_s64_branchfree_t ret = {tmp.magic, tmp.more};
+    return ret;
+}
+
+int64_t libdivide_s64_do(int64_t numer, const struct libdivide_s64_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+
+    if (!denom->magic) { // shift path
+        uint64_t mask = (1ULL << shift) - 1;
+        uint64_t uq = numer + ((numer >> 63) & mask);
+        int64_t q = (int64_t)uq;
+        q >>= shift;
+        // must be arithmetic shift and then sign-extend
+        int64_t sign = (int8_t)more >> 7;
+        q = (q ^ sign) - sign;
+        return q;
+    } else {
+        uint64_t uq = (uint64_t)libdivide_mullhi_s64(denom->magic, numer);
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // must be arithmetic shift and then sign extend
+            int64_t sign = (int8_t)more >> 7;
+            // q += (more < 0 ? -numer : numer)
+            // cast required to avoid UB
+            uq += ((uint64_t)numer ^ sign) - sign;
+        }
+        int64_t q = (int64_t)uq;
+        q >>= shift;
+        q += (q < 0);
+        return q;
+    }
+}
+
+int64_t libdivide_s64_branchfree_do(int64_t numer, const struct libdivide_s64_branchfree_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+    // must be arithmetic shift and then sign extend
+    int64_t sign = (int8_t)more >> 7;
+    int64_t magic = denom->magic;
+    int64_t q = libdivide_mullhi_s64(magic, numer);
+    q += numer;
+
+    // If q is non-negative, we have nothing to do.
+    // If q is negative, we want to add either (2**shift)-1 if d is a power of
+    // 2, or (2**shift) if it is not a power of 2.
+    uint64_t is_power_of_2 = (magic == 0);
+    uint64_t q_sign = (uint64_t)(q >> 63);
+    q += q_sign & ((1ULL << shift) - is_power_of_2);
+
+    // Arithmetic right shift
+    q >>= shift;
+    // Negate if needed
+    q = (q ^ sign) - sign;
+
+    return q;
+}
+
+int64_t libdivide_s64_recover(const struct libdivide_s64_t *denom) {
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+    if (denom->magic == 0) { // shift path
+        uint64_t absD = 1ULL << shift;
+        if (more & LIBDIVIDE_NEGATIVE_DIVISOR) {
+            absD = -absD;
+        }
+        return (int64_t)absD;
+    } else {
+        // Unsigned math is much easier
+        int negative_divisor = (more & LIBDIVIDE_NEGATIVE_DIVISOR);
+        int magic_was_negated = (more & LIBDIVIDE_ADD_MARKER)
+            ? denom->magic > 0 : denom->magic < 0;
+
+        uint64_t d = (uint64_t)(magic_was_negated ? -denom->magic : denom->magic);
+        uint64_t n_hi = 1ULL << shift, n_lo = 0;
+        uint64_t rem_ignored;
+        uint64_t q = libdivide_128_div_64_to_64(n_hi, n_lo, d, &rem_ignored);
+        int64_t result = (int64_t)(q + 1);
+        if (negative_divisor) {
+            result = -result;
+        }
+        return result;
+    }
+}
+
+int64_t libdivide_s64_branchfree_recover(const struct libdivide_s64_branchfree_t *denom) {
+    return libdivide_s64_recover((const struct libdivide_s64_t *)denom);
+}*/
+
+#if defined(LIBDIVIDE_AVX512)
+
+static inline __m512i libdivide_u32_do_vector(__m512i numers, const struct libdivide_u32_t *denom);
+static inline __m512i libdivide_s32_do_vector(__m512i numers, const struct libdivide_s32_t *denom);
+static inline __m512i libdivide_u64_do_vector(__m512i numers, const struct libdivide_u64_t *denom);
+static inline __m512i libdivide_s64_do_vector(__m512i numers, const struct libdivide_s64_t *denom);
+
+static inline __m512i libdivide_u32_branchfree_do_vector(__m512i numers, const struct libdivide_u32_branchfree_t *denom);
+static inline __m512i libdivide_s32_branchfree_do_vector(__m512i numers, const struct libdivide_s32_branchfree_t *denom);
+static inline __m512i libdivide_u64_branchfree_do_vector(__m512i numers, const struct libdivide_u64_branchfree_t *denom);
+static inline __m512i libdivide_s64_branchfree_do_vector(__m512i numers, const struct libdivide_s64_branchfree_t *denom);
+
+//////// Internal Utility Functions
+
+static inline __m512i libdivide_s64_signbits(__m512i v) {;
+    return _mm512_srai_epi64(v, 63);
+}
+
+static inline __m512i libdivide_s64_shift_right_vector(__m512i v, int amt) {
+    return _mm512_srai_epi64(v, amt);
+}
+
+// Here, b is assumed to contain one 32-bit value repeated.
+static inline __m512i libdivide_mullhi_u32_vector(__m512i a, __m512i b) {
+    __m512i hi_product_0Z2Z = _mm512_srli_epi64(_mm512_mul_epu32(a, b), 32);
+    __m512i a1X3X = _mm512_srli_epi64(a, 32);
+    __m512i mask = _mm512_set_epi32(-1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0);
+    __m512i hi_product_Z1Z3 = _mm512_and_si512(_mm512_mul_epu32(a1X3X, b), mask);
+    return _mm512_or_si512(hi_product_0Z2Z, hi_product_Z1Z3);
+}
+
+// b is one 32-bit value repeated.
+static inline __m512i libdivide_mullhi_s32_vector(__m512i a, __m512i b) {
+    __m512i hi_product_0Z2Z = _mm512_srli_epi64(_mm512_mul_epi32(a, b), 32);
+    __m512i a1X3X = _mm512_srli_epi64(a, 32);
+    __m512i mask = _mm512_set_epi32(-1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0);
+    __m512i hi_product_Z1Z3 = _mm512_and_si512(_mm512_mul_epi32(a1X3X, b), mask);
+    return _mm512_or_si512(hi_product_0Z2Z, hi_product_Z1Z3);
+}
+
+// Here, y is assumed to contain one 64-bit value repeated.
+// https://stackoverflow.com/a/28827013
+static inline __m512i libdivide_mullhi_u64_vector(__m512i x, __m512i y) {
+    __m512i lomask = _mm512_set1_epi64(0xffffffff);
+    __m512i xh = _mm512_shuffle_epi32(x, (_MM_PERM_ENUM) 0xB1);
+    __m512i yh = _mm512_shuffle_epi32(y, (_MM_PERM_ENUM) 0xB1);
+    __m512i w0 = _mm512_mul_epu32(x, y);
+    __m512i w1 = _mm512_mul_epu32(x, yh);
+    __m512i w2 = _mm512_mul_epu32(xh, y);
+    __m512i w3 = _mm512_mul_epu32(xh, yh);
+    __m512i w0h = _mm512_srli_epi64(w0, 32);
+    __m512i s1 = _mm512_add_epi64(w1, w0h);
+    __m512i s1l = _mm512_and_si512(s1, lomask);
+    __m512i s1h = _mm512_srli_epi64(s1, 32);
+    __m512i s2 = _mm512_add_epi64(w2, s1l);
+    __m512i s2h = _mm512_srli_epi64(s2, 32);
+    __m512i hi = _mm512_add_epi64(w3, s1h);
+            hi = _mm512_add_epi64(hi, s2h);
+
+    return hi;
+}
+
+// y is one 64-bit value repeated.
+static inline __m512i libdivide_mullhi_s64_vector(__m512i x, __m512i y) {
+    __m512i p = libdivide_mullhi_u64_vector(x, y);
+    __m512i t1 = _mm512_and_si512(libdivide_s64_signbits(x), y);
+    __m512i t2 = _mm512_and_si512(libdivide_s64_signbits(y), x);
+    p = _mm512_sub_epi64(p, t1);
+    p = _mm512_sub_epi64(p, t2);
+    return p;
+}
+
+////////// UINT32
+
+__m512i libdivide_u32_do_vector(__m512i numers, const struct libdivide_u32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return _mm512_srli_epi32(numers, more);
+    }
+    else {
+        __m512i q = libdivide_mullhi_u32_vector(numers, _mm512_set1_epi32(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // uint32_t t = ((numer - q) >> 1) + q;
+            // return t >> denom->shift;
+            uint32_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+            __m512i t = _mm512_add_epi32(_mm512_srli_epi32(_mm512_sub_epi32(numers, q), 1), q);
+            return _mm512_srli_epi32(t, shift);
+        }
+        else {
+            return _mm512_srli_epi32(q, more);
+        }
+    }
+}
+
+__m512i libdivide_u32_branchfree_do_vector(__m512i numers, const struct libdivide_u32_branchfree_t *denom) {
+    __m512i q = libdivide_mullhi_u32_vector(numers, _mm512_set1_epi32(denom->magic));
+    __m512i t = _mm512_add_epi32(_mm512_srli_epi32(_mm512_sub_epi32(numers, q), 1), q);
+    return _mm512_srli_epi32(t, denom->more);
+}
+
+////////// UINT64
+
+__m512i libdivide_u64_do_vector(__m512i numers, const struct libdivide_u64_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return _mm512_srli_epi64(numers, more);
+    }
+    else {
+        __m512i q = libdivide_mullhi_u64_vector(numers, _mm512_set1_epi64(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // uint32_t t = ((numer - q) >> 1) + q;
+            // return t >> denom->shift;
+            uint32_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+            __m512i t = _mm512_add_epi64(_mm512_srli_epi64(_mm512_sub_epi64(numers, q), 1), q);
+            return _mm512_srli_epi64(t, shift);
+        }
+        else {
+            return _mm512_srli_epi64(q, more);
+        }
+    }
+}
+
+__m512i libdivide_u64_branchfree_do_vector(__m512i numers, const struct libdivide_u64_branchfree_t *denom) {
+    __m512i q = libdivide_mullhi_u64_vector(numers, _mm512_set1_epi64(denom->magic));
+    __m512i t = _mm512_add_epi64(_mm512_srli_epi64(_mm512_sub_epi64(numers, q), 1), q);
+    return _mm512_srli_epi64(t, denom->more);
+}
+
+////////// SINT32
+
+__m512i libdivide_s32_do_vector(__m512i numers, const struct libdivide_s32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        uint32_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+        uint32_t mask = (1U << shift) - 1;
+        __m512i roundToZeroTweak = _mm512_set1_epi32(mask);
+        // q = numer + ((numer >> 31) & roundToZeroTweak);
+        __m512i q = _mm512_add_epi32(numers, _mm512_and_si512(_mm512_srai_epi32(numers, 31), roundToZeroTweak));
+        q = _mm512_srai_epi32(q, shift);
+        __m512i sign = _mm512_set1_epi32((int8_t)more >> 7);
+        // q = (q ^ sign) - sign;
+        q = _mm512_sub_epi32(_mm512_xor_si512(q, sign), sign);
+        return q;
+    }
+    else {
+        __m512i q = libdivide_mullhi_s32_vector(numers, _mm512_set1_epi32(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+             // must be arithmetic shift
+            __m512i sign = _mm512_set1_epi32((int8_t)more >> 7);
+             // q += ((numer ^ sign) - sign);
+            q = _mm512_add_epi32(q, _mm512_sub_epi32(_mm512_xor_si512(numers, sign), sign));
+        }
+        // q >>= shift
+        q = _mm512_srai_epi32(q, more & LIBDIVIDE_32_SHIFT_MASK);
+        q = _mm512_add_epi32(q, _mm512_srli_epi32(q, 31)); // q += (q < 0)
+        return q;
+    }
+}
+
+__m512i libdivide_s32_branchfree_do_vector(__m512i numers, const struct libdivide_s32_branchfree_t *denom) {
+    int32_t magic = denom->magic;
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+     // must be arithmetic shift
+    __m512i sign = _mm512_set1_epi32((int8_t)more >> 7);
+    __m512i q = libdivide_mullhi_s32_vector(numers, _mm512_set1_epi32(magic));
+    q = _mm512_add_epi32(q, numers); // q += numers
+
+    // If q is non-negative, we have nothing to do
+    // If q is negative, we want to add either (2**shift)-1 if d is
+    // a power of 2, or (2**shift) if it is not a power of 2
+    uint32_t is_power_of_2 = (magic == 0);
+    __m512i q_sign = _mm512_srai_epi32(q, 31); // q_sign = q >> 31
+    __m512i mask = _mm512_set1_epi32((1U << shift) - is_power_of_2);
+    q = _mm512_add_epi32(q, _mm512_and_si512(q_sign, mask)); // q = q + (q_sign & mask)
+    q = _mm512_srai_epi32(q, shift); // q >>= shift
+    q = _mm512_sub_epi32(_mm512_xor_si512(q, sign), sign); // q = (q ^ sign) - sign
+    return q;
+}
+
+////////// SINT64
+
+__m512i libdivide_s64_do_vector(__m512i numers, const struct libdivide_s64_t *denom) {
+    uint8_t more = denom->more;
+    int64_t magic = denom->magic;
+    if (magic == 0) { // shift path
+        uint32_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+        uint64_t mask = (1ULL << shift) - 1;
+        __m512i roundToZeroTweak = _mm512_set1_epi64(mask);
+        // q = numer + ((numer >> 63) & roundToZeroTweak);
+        __m512i q = _mm512_add_epi64(numers, _mm512_and_si512(libdivide_s64_signbits(numers), roundToZeroTweak));
+        q = libdivide_s64_shift_right_vector(q, shift);
+        __m512i sign = _mm512_set1_epi32((int8_t)more >> 7);
+         // q = (q ^ sign) - sign;
+        q = _mm512_sub_epi64(_mm512_xor_si512(q, sign), sign);
+        return q;
+    }
+    else {
+        __m512i q = libdivide_mullhi_s64_vector(numers, _mm512_set1_epi64(magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // must be arithmetic shift
+            __m512i sign = _mm512_set1_epi32((int8_t)more >> 7);
+            // q += ((numer ^ sign) - sign);
+            q = _mm512_add_epi64(q, _mm512_sub_epi64(_mm512_xor_si512(numers, sign), sign));
+        }
+        // q >>= denom->mult_path.shift
+        q = libdivide_s64_shift_right_vector(q, more & LIBDIVIDE_64_SHIFT_MASK);
+        q = _mm512_add_epi64(q, _mm512_srli_epi64(q, 63)); // q += (q < 0)
+        return q;
+    }
+}
+
+__m512i libdivide_s64_branchfree_do_vector(__m512i numers, const struct libdivide_s64_branchfree_t *denom) {
+    int64_t magic = denom->magic;
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+    // must be arithmetic shift
+    __m512i sign = _mm512_set1_epi32((int8_t)more >> 7);
+
+     // libdivide_mullhi_s64(numers, magic);
+    __m512i q = libdivide_mullhi_s64_vector(numers, _mm512_set1_epi64(magic));
+    q = _mm512_add_epi64(q, numers); // q += numers
+
+    // If q is non-negative, we have nothing to do.
+    // If q is negative, we want to add either (2**shift)-1 if d is
+    // a power of 2, or (2**shift) if it is not a power of 2.
+    uint32_t is_power_of_2 = (magic == 0);
+    __m512i q_sign = libdivide_s64_signbits(q); // q_sign = q >> 63
+    __m512i mask = _mm512_set1_epi64((1ULL << shift) - is_power_of_2);
+    q = _mm512_add_epi64(q, _mm512_and_si512(q_sign, mask)); // q = q + (q_sign & mask)
+    q = libdivide_s64_shift_right_vector(q, shift); // q >>= shift
+    q = _mm512_sub_epi64(_mm512_xor_si512(q, sign), sign); // q = (q ^ sign) - sign
+    return q;
+}
+
+#elif defined(LIBDIVIDE_AVX2)
+
+static inline __m256i libdivide_u32_do_vector(__m256i numers, const struct libdivide_u32_t *denom);
+static inline __m256i libdivide_s32_do_vector(__m256i numers, const struct libdivide_s32_t *denom);
+static inline __m256i libdivide_u64_do_vector(__m256i numers, const struct libdivide_u64_t *denom);
+static inline __m256i libdivide_s64_do_vector(__m256i numers, const struct libdivide_s64_t *denom);
+
+static inline __m256i libdivide_u32_branchfree_do_vector(__m256i numers, const struct libdivide_u32_branchfree_t *denom);
+static inline __m256i libdivide_s32_branchfree_do_vector(__m256i numers, const struct libdivide_s32_branchfree_t *denom);
+static inline __m256i libdivide_u64_branchfree_do_vector(__m256i numers, const struct libdivide_u64_branchfree_t *denom);
+static inline __m256i libdivide_s64_branchfree_do_vector(__m256i numers, const struct libdivide_s64_branchfree_t *denom);
+
+//////// Internal Utility Functions
+
+// Implementation of _mm256_srai_epi64(v, 63) (from AVX512).
+static inline __m256i libdivide_s64_signbits(__m256i v) {
+    __m256i hiBitsDuped = _mm256_shuffle_epi32(v, _MM_SHUFFLE(3, 3, 1, 1));
+    __m256i signBits = _mm256_srai_epi32(hiBitsDuped, 31);
+    return signBits;
+}
+
+// Implementation of _mm256_srai_epi64 (from AVX512).
+static inline __m256i libdivide_s64_shift_right_vector(__m256i v, int amt) {
+    const int b = 64 - amt;
+    __m256i m = _mm256_set1_epi64x(1ULL << (b - 1));
+    __m256i x = _mm256_srli_epi64(v, amt);
+    __m256i result = _mm256_sub_epi64(_mm256_xor_si256(x, m), m);
+    return result;
+}
+
+// Here, b is assumed to contain one 32-bit value repeated.
+static inline __m256i libdivide_mullhi_u32_vector(__m256i a, __m256i b) {
+    __m256i hi_product_0Z2Z = _mm256_srli_epi64(_mm256_mul_epu32(a, b), 32);
+    __m256i a1X3X = _mm256_srli_epi64(a, 32);
+    __m256i mask = _mm256_set_epi32(-1, 0, -1, 0, -1, 0, -1, 0);
+    __m256i hi_product_Z1Z3 = _mm256_and_si256(_mm256_mul_epu32(a1X3X, b), mask);
+    return _mm256_or_si256(hi_product_0Z2Z, hi_product_Z1Z3);
+}
+
+// b is one 32-bit value repeated.
+static inline __m256i libdivide_mullhi_s32_vector(__m256i a, __m256i b) {
+    __m256i hi_product_0Z2Z = _mm256_srli_epi64(_mm256_mul_epi32(a, b), 32);
+    __m256i a1X3X = _mm256_srli_epi64(a, 32);
+    __m256i mask = _mm256_set_epi32(-1, 0, -1, 0, -1, 0, -1, 0);
+    __m256i hi_product_Z1Z3 = _mm256_and_si256(_mm256_mul_epi32(a1X3X, b), mask);
+    return _mm256_or_si256(hi_product_0Z2Z, hi_product_Z1Z3);
+}
+
+// Here, y is assumed to contain one 64-bit value repeated.
+// https://stackoverflow.com/a/28827013
+static inline __m256i libdivide_mullhi_u64_vector(__m256i x, __m256i y) {
+    __m256i lomask = _mm256_set1_epi64x(0xffffffff);
+    __m256i xh = _mm256_shuffle_epi32(x, 0xB1);        // x0l, x0h, x1l, x1h
+    __m256i yh = _mm256_shuffle_epi32(y, 0xB1);        // y0l, y0h, y1l, y1h
+    __m256i w0 = _mm256_mul_epu32(x, y);               // x0l*y0l, x1l*y1l
+    __m256i w1 = _mm256_mul_epu32(x, yh);              // x0l*y0h, x1l*y1h
+    __m256i w2 = _mm256_mul_epu32(xh, y);              // x0h*y0l, x1h*y0l
+    __m256i w3 = _mm256_mul_epu32(xh, yh);             // x0h*y0h, x1h*y1h
+    __m256i w0h = _mm256_srli_epi64(w0, 32);
+    __m256i s1 = _mm256_add_epi64(w1, w0h);
+    __m256i s1l = _mm256_and_si256(s1, lomask);
+    __m256i s1h = _mm256_srli_epi64(s1, 32);
+    __m256i s2 = _mm256_add_epi64(w2, s1l);
+    __m256i s2h = _mm256_srli_epi64(s2, 32);
+    __m256i hi = _mm256_add_epi64(w3, s1h);
+            hi = _mm256_add_epi64(hi, s2h);
+
+    return hi;
+}
+
+// y is one 64-bit value repeated.
+static inline __m256i libdivide_mullhi_s64_vector(__m256i x, __m256i y) {
+    __m256i p = libdivide_mullhi_u64_vector(x, y);
+    __m256i t1 = _mm256_and_si256(libdivide_s64_signbits(x), y);
+    __m256i t2 = _mm256_and_si256(libdivide_s64_signbits(y), x);
+    p = _mm256_sub_epi64(p, t1);
+    p = _mm256_sub_epi64(p, t2);
+    return p;
+}
+
+////////// UINT32
+
+__m256i libdivide_u32_do_vector(__m256i numers, const struct libdivide_u32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return _mm256_srli_epi32(numers, more);
+    }
+    else {
+        __m256i q = libdivide_mullhi_u32_vector(numers, _mm256_set1_epi32(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // uint32_t t = ((numer - q) >> 1) + q;
+            // return t >> denom->shift;
+            uint32_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+            __m256i t = _mm256_add_epi32(_mm256_srli_epi32(_mm256_sub_epi32(numers, q), 1), q);
+            return _mm256_srli_epi32(t, shift);
+        }
+        else {
+            return _mm256_srli_epi32(q, more);
+        }
+    }
+}
+
+__m256i libdivide_u32_branchfree_do_vector(__m256i numers, const struct libdivide_u32_branchfree_t *denom) {
+    __m256i q = libdivide_mullhi_u32_vector(numers, _mm256_set1_epi32(denom->magic));
+    __m256i t = _mm256_add_epi32(_mm256_srli_epi32(_mm256_sub_epi32(numers, q), 1), q);
+    return _mm256_srli_epi32(t, denom->more);
+}
+
+////////// UINT64
+
+__m256i libdivide_u64_do_vector(__m256i numers, const struct libdivide_u64_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return _mm256_srli_epi64(numers, more);
+    }
+    else {
+        __m256i q = libdivide_mullhi_u64_vector(numers, _mm256_set1_epi64x(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // uint32_t t = ((numer - q) >> 1) + q;
+            // return t >> denom->shift;
+            uint32_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+            __m256i t = _mm256_add_epi64(_mm256_srli_epi64(_mm256_sub_epi64(numers, q), 1), q);
+            return _mm256_srli_epi64(t, shift);
+        }
+        else {
+            return _mm256_srli_epi64(q, more);
+        }
+    }
+}
+
+__m256i libdivide_u64_branchfree_do_vector(__m256i numers, const struct libdivide_u64_branchfree_t *denom) {
+    __m256i q = libdivide_mullhi_u64_vector(numers, _mm256_set1_epi64x(denom->magic));
+    __m256i t = _mm256_add_epi64(_mm256_srli_epi64(_mm256_sub_epi64(numers, q), 1), q);
+    return _mm256_srli_epi64(t, denom->more);
+}
+
+////////// SINT32
+
+__m256i libdivide_s32_do_vector(__m256i numers, const struct libdivide_s32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        uint32_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+        uint32_t mask = (1U << shift) - 1;
+        __m256i roundToZeroTweak = _mm256_set1_epi32(mask);
+        // q = numer + ((numer >> 31) & roundToZeroTweak);
+        __m256i q = _mm256_add_epi32(numers, _mm256_and_si256(_mm256_srai_epi32(numers, 31), roundToZeroTweak));
+        q = _mm256_srai_epi32(q, shift);
+        __m256i sign = _mm256_set1_epi32((int8_t)more >> 7);
+        // q = (q ^ sign) - sign;
+        q = _mm256_sub_epi32(_mm256_xor_si256(q, sign), sign);
+        return q;
+    }
+    else {
+        __m256i q = libdivide_mullhi_s32_vector(numers, _mm256_set1_epi32(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+             // must be arithmetic shift
+            __m256i sign = _mm256_set1_epi32((int8_t)more >> 7);
+             // q += ((numer ^ sign) - sign);
+            q = _mm256_add_epi32(q, _mm256_sub_epi32(_mm256_xor_si256(numers, sign), sign));
+        }
+        // q >>= shift
+        q = _mm256_srai_epi32(q, more & LIBDIVIDE_32_SHIFT_MASK);
+        q = _mm256_add_epi32(q, _mm256_srli_epi32(q, 31)); // q += (q < 0)
+        return q;
+    }
+}
+
+__m256i libdivide_s32_branchfree_do_vector(__m256i numers, const struct libdivide_s32_branchfree_t *denom) {
+    int32_t magic = denom->magic;
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+     // must be arithmetic shift
+    __m256i sign = _mm256_set1_epi32((int8_t)more >> 7);
+    __m256i q = libdivide_mullhi_s32_vector(numers, _mm256_set1_epi32(magic));
+    q = _mm256_add_epi32(q, numers); // q += numers
+
+    // If q is non-negative, we have nothing to do
+    // If q is negative, we want to add either (2**shift)-1 if d is
+    // a power of 2, or (2**shift) if it is not a power of 2
+    uint32_t is_power_of_2 = (magic == 0);
+    __m256i q_sign = _mm256_srai_epi32(q, 31); // q_sign = q >> 31
+    __m256i mask = _mm256_set1_epi32((1U << shift) - is_power_of_2);
+    q = _mm256_add_epi32(q, _mm256_and_si256(q_sign, mask)); // q = q + (q_sign & mask)
+    q = _mm256_srai_epi32(q, shift); // q >>= shift
+    q = _mm256_sub_epi32(_mm256_xor_si256(q, sign), sign); // q = (q ^ sign) - sign
+    return q;
+}
+
+////////// SINT64
+
+__m256i libdivide_s64_do_vector(__m256i numers, const struct libdivide_s64_t *denom) {
+    uint8_t more = denom->more;
+    int64_t magic = denom->magic;
+    if (magic == 0) { // shift path
+        uint32_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+        uint64_t mask = (1ULL << shift) - 1;
+        __m256i roundToZeroTweak = _mm256_set1_epi64x(mask);
+        // q = numer + ((numer >> 63) & roundToZeroTweak);
+        __m256i q = _mm256_add_epi64(numers, _mm256_and_si256(libdivide_s64_signbits(numers), roundToZeroTweak));
+        q = libdivide_s64_shift_right_vector(q, shift);
+        __m256i sign = _mm256_set1_epi32((int8_t)more >> 7);
+         // q = (q ^ sign) - sign;
+        q = _mm256_sub_epi64(_mm256_xor_si256(q, sign), sign);
+        return q;
+    }
+    else {
+        __m256i q = libdivide_mullhi_s64_vector(numers, _mm256_set1_epi64x(magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // must be arithmetic shift
+            __m256i sign = _mm256_set1_epi32((int8_t)more >> 7);
+            // q += ((numer ^ sign) - sign);
+            q = _mm256_add_epi64(q, _mm256_sub_epi64(_mm256_xor_si256(numers, sign), sign));
+        }
+        // q >>= denom->mult_path.shift
+        q = libdivide_s64_shift_right_vector(q, more & LIBDIVIDE_64_SHIFT_MASK);
+        q = _mm256_add_epi64(q, _mm256_srli_epi64(q, 63)); // q += (q < 0)
+        return q;
+    }
+}
+
+__m256i libdivide_s64_branchfree_do_vector(__m256i numers, const struct libdivide_s64_branchfree_t *denom) {
+    int64_t magic = denom->magic;
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+    // must be arithmetic shift
+    __m256i sign = _mm256_set1_epi32((int8_t)more >> 7);
+
+     // libdivide_mullhi_s64(numers, magic);
+    __m256i q = libdivide_mullhi_s64_vector(numers, _mm256_set1_epi64x(magic));
+    q = _mm256_add_epi64(q, numers); // q += numers
+
+    // If q is non-negative, we have nothing to do.
+    // If q is negative, we want to add either (2**shift)-1 if d is
+    // a power of 2, or (2**shift) if it is not a power of 2.
+    uint32_t is_power_of_2 = (magic == 0);
+    __m256i q_sign = libdivide_s64_signbits(q); // q_sign = q >> 63
+    __m256i mask = _mm256_set1_epi64x((1ULL << shift) - is_power_of_2);
+    q = _mm256_add_epi64(q, _mm256_and_si256(q_sign, mask)); // q = q + (q_sign & mask)
+    q = libdivide_s64_shift_right_vector(q, shift); // q >>= shift
+    q = _mm256_sub_epi64(_mm256_xor_si256(q, sign), sign); // q = (q ^ sign) - sign
+    return q;
+}
+
+#elif defined(LIBDIVIDE_SSE2)
+
+static inline __m128i libdivide_u32_do_vector(__m128i numers, const struct libdivide_u32_t *denom);
+static inline __m128i libdivide_s32_do_vector(__m128i numers, const struct libdivide_s32_t *denom);
+static inline __m128i libdivide_u64_do_vector(__m128i numers, const struct libdivide_u64_t *denom);
+static inline __m128i libdivide_s64_do_vector(__m128i numers, const struct libdivide_s64_t *denom);
+
+static inline __m128i libdivide_u32_branchfree_do_vector(__m128i numers, const struct libdivide_u32_branchfree_t *denom);
+static inline __m128i libdivide_s32_branchfree_do_vector(__m128i numers, const struct libdivide_s32_branchfree_t *denom);
+static inline __m128i libdivide_u64_branchfree_do_vector(__m128i numers, const struct libdivide_u64_branchfree_t *denom);
+static inline __m128i libdivide_s64_branchfree_do_vector(__m128i numers, const struct libdivide_s64_branchfree_t *denom);
+
+//////// Internal Utility Functions
+
+// Implementation of _mm_srai_epi64(v, 63) (from AVX512).
+static inline __m128i libdivide_s64_signbits(__m128i v) {
+    __m128i hiBitsDuped = _mm_shuffle_epi32(v, _MM_SHUFFLE(3, 3, 1, 1));
+    __m128i signBits = _mm_srai_epi32(hiBitsDuped, 31);
+    return signBits;
+}
+
+// Implementation of _mm_srai_epi64 (from AVX512).
+static inline __m128i libdivide_s64_shift_right_vector(__m128i v, int amt) {
+    const int b = 64 - amt;
+    __m128i m = _mm_set1_epi64x(1ULL << (b - 1));
+    __m128i x = _mm_srli_epi64(v, amt);
+    __m128i result = _mm_sub_epi64(_mm_xor_si128(x, m), m);
+    return result;
+}
+
+// Here, b is assumed to contain one 32-bit value repeated.
+static inline __m128i libdivide_mullhi_u32_vector(__m128i a, __m128i b) {
+    __m128i hi_product_0Z2Z = _mm_srli_epi64(_mm_mul_epu32(a, b), 32);
+    __m128i a1X3X = _mm_srli_epi64(a, 32);
+    __m128i mask = _mm_set_epi32(-1, 0, -1, 0);
+    __m128i hi_product_Z1Z3 = _mm_and_si128(_mm_mul_epu32(a1X3X, b), mask);
+    return _mm_or_si128(hi_product_0Z2Z, hi_product_Z1Z3);
+}
+
+// SSE2 does not have a signed multiplication instruction, but we can convert
+// unsigned to signed pretty efficiently. Again, b is just a 32 bit value
+// repeated four times.
+static inline __m128i libdivide_mullhi_s32_vector(__m128i a, __m128i b) {
+    __m128i p = libdivide_mullhi_u32_vector(a, b);
+    // t1 = (a >> 31) & y, arithmetic shift
+    __m128i t1 = _mm_and_si128(_mm_srai_epi32(a, 31), b);
+    __m128i t2 = _mm_and_si128(_mm_srai_epi32(b, 31), a);
+    p = _mm_sub_epi32(p, t1);
+    p = _mm_sub_epi32(p, t2);
+    return p;
+}
+
+// Here, y is assumed to contain one 64-bit value repeated.
+// https://stackoverflow.com/a/28827013
+static inline __m128i libdivide_mullhi_u64_vector(__m128i x, __m128i y) {
+    __m128i lomask = _mm_set1_epi64x(0xffffffff);
+    __m128i xh = _mm_shuffle_epi32(x, 0xB1);        // x0l, x0h, x1l, x1h
+    __m128i yh = _mm_shuffle_epi32(y, 0xB1);        // y0l, y0h, y1l, y1h
+    __m128i w0 = _mm_mul_epu32(x, y);               // x0l*y0l, x1l*y1l
+    __m128i w1 = _mm_mul_epu32(x, yh);              // x0l*y0h, x1l*y1h
+    __m128i w2 = _mm_mul_epu32(xh, y);              // x0h*y0l, x1h*y0l
+    __m128i w3 = _mm_mul_epu32(xh, yh);             // x0h*y0h, x1h*y1h
+    __m128i w0h = _mm_srli_epi64(w0, 32);
+    __m128i s1 = _mm_add_epi64(w1, w0h);
+    __m128i s1l = _mm_and_si128(s1, lomask);
+    __m128i s1h = _mm_srli_epi64(s1, 32);
+    __m128i s2 = _mm_add_epi64(w2, s1l);
+    __m128i s2h = _mm_srli_epi64(s2, 32);
+    __m128i hi = _mm_add_epi64(w3, s1h);
+            hi = _mm_add_epi64(hi, s2h);
+
+    return hi;
+}
+
+// y is one 64-bit value repeated.
+static inline __m128i libdivide_mullhi_s64_vector(__m128i x, __m128i y) {
+    __m128i p = libdivide_mullhi_u64_vector(x, y);
+    __m128i t1 = _mm_and_si128(libdivide_s64_signbits(x), y);
+    __m128i t2 = _mm_and_si128(libdivide_s64_signbits(y), x);
+    p = _mm_sub_epi64(p, t1);
+    p = _mm_sub_epi64(p, t2);
+    return p;
+}
+
+////////// UINT32
+
+__m128i libdivide_u32_do_vector(__m128i numers, const struct libdivide_u32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return _mm_srli_epi32(numers, more);
+    }
+    else {
+        __m128i q = libdivide_mullhi_u32_vector(numers, _mm_set1_epi32(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // uint32_t t = ((numer - q) >> 1) + q;
+            // return t >> denom->shift;
+            uint32_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+            __m128i t = _mm_add_epi32(_mm_srli_epi32(_mm_sub_epi32(numers, q), 1), q);
+            return _mm_srli_epi32(t, shift);
+        }
+        else {
+            return _mm_srli_epi32(q, more);
+        }
+    }
+}
+
+__m128i libdivide_u32_branchfree_do_vector(__m128i numers, const struct libdivide_u32_branchfree_t *denom) {
+    __m128i q = libdivide_mullhi_u32_vector(numers, _mm_set1_epi32(denom->magic));
+    __m128i t = _mm_add_epi32(_mm_srli_epi32(_mm_sub_epi32(numers, q), 1), q);
+    return _mm_srli_epi32(t, denom->more);
+}
+
+////////// UINT64
+
+__m128i libdivide_u64_do_vector(__m128i numers, const struct libdivide_u64_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        return _mm_srli_epi64(numers, more);
+    }
+    else {
+        __m128i q = libdivide_mullhi_u64_vector(numers, _mm_set1_epi64x(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // uint32_t t = ((numer - q) >> 1) + q;
+            // return t >> denom->shift;
+            uint32_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+            __m128i t = _mm_add_epi64(_mm_srli_epi64(_mm_sub_epi64(numers, q), 1), q);
+            return _mm_srli_epi64(t, shift);
+        }
+        else {
+            return _mm_srli_epi64(q, more);
+        }
+    }
+}
+
+__m128i libdivide_u64_branchfree_do_vector(__m128i numers, const struct libdivide_u64_branchfree_t *denom) {
+    __m128i q = libdivide_mullhi_u64_vector(numers, _mm_set1_epi64x(denom->magic));
+    __m128i t = _mm_add_epi64(_mm_srli_epi64(_mm_sub_epi64(numers, q), 1), q);
+    return _mm_srli_epi64(t, denom->more);
+}
+
+////////// SINT32
+
+__m128i libdivide_s32_do_vector(__m128i numers, const struct libdivide_s32_t *denom) {
+    uint8_t more = denom->more;
+    if (!denom->magic) {
+        uint32_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+        uint32_t mask = (1U << shift) - 1;
+        __m128i roundToZeroTweak = _mm_set1_epi32(mask);
+        // q = numer + ((numer >> 31) & roundToZeroTweak);
+        __m128i q = _mm_add_epi32(numers, _mm_and_si128(_mm_srai_epi32(numers, 31), roundToZeroTweak));
+        q = _mm_srai_epi32(q, shift);
+        __m128i sign = _mm_set1_epi32((int8_t)more >> 7);
+        // q = (q ^ sign) - sign;
+        q = _mm_sub_epi32(_mm_xor_si128(q, sign), sign);
+        return q;
+    }
+    else {
+        __m128i q = libdivide_mullhi_s32_vector(numers, _mm_set1_epi32(denom->magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+             // must be arithmetic shift
+            __m128i sign = _mm_set1_epi32((int8_t)more >> 7);
+             // q += ((numer ^ sign) - sign);
+            q = _mm_add_epi32(q, _mm_sub_epi32(_mm_xor_si128(numers, sign), sign));
+        }
+        // q >>= shift
+        q = _mm_srai_epi32(q, more & LIBDIVIDE_32_SHIFT_MASK);
+        q = _mm_add_epi32(q, _mm_srli_epi32(q, 31)); // q += (q < 0)
+        return q;
+    }
+}
+
+__m128i libdivide_s32_branchfree_do_vector(__m128i numers, const struct libdivide_s32_branchfree_t *denom) {
+    int32_t magic = denom->magic;
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_32_SHIFT_MASK;
+     // must be arithmetic shift
+    __m128i sign = _mm_set1_epi32((int8_t)more >> 7);
+    __m128i q = libdivide_mullhi_s32_vector(numers, _mm_set1_epi32(magic));
+    q = _mm_add_epi32(q, numers); // q += numers
+
+    // If q is non-negative, we have nothing to do
+    // If q is negative, we want to add either (2**shift)-1 if d is
+    // a power of 2, or (2**shift) if it is not a power of 2
+    uint32_t is_power_of_2 = (magic == 0);
+    __m128i q_sign = _mm_srai_epi32(q, 31); // q_sign = q >> 31
+    __m128i mask = _mm_set1_epi32((1U << shift) - is_power_of_2);
+    q = _mm_add_epi32(q, _mm_and_si128(q_sign, mask)); // q = q + (q_sign & mask)
+    q = _mm_srai_epi32(q, shift); // q >>= shift
+    q = _mm_sub_epi32(_mm_xor_si128(q, sign), sign); // q = (q ^ sign) - sign
+    return q;
+}
+
+////////// SINT64
+
+__m128i libdivide_s64_do_vector(__m128i numers, const struct libdivide_s64_t *denom) {
+    uint8_t more = denom->more;
+    int64_t magic = denom->magic;
+    if (magic == 0) { // shift path
+        uint32_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+        uint64_t mask = (1ULL << shift) - 1;
+        __m128i roundToZeroTweak = _mm_set1_epi64x(mask);
+        // q = numer + ((numer >> 63) & roundToZeroTweak);
+        __m128i q = _mm_add_epi64(numers, _mm_and_si128(libdivide_s64_signbits(numers), roundToZeroTweak));
+        q = libdivide_s64_shift_right_vector(q, shift);
+        __m128i sign = _mm_set1_epi32((int8_t)more >> 7);
+         // q = (q ^ sign) - sign;
+        q = _mm_sub_epi64(_mm_xor_si128(q, sign), sign);
+        return q;
+    }
+    else {
+        __m128i q = libdivide_mullhi_s64_vector(numers, _mm_set1_epi64x(magic));
+        if (more & LIBDIVIDE_ADD_MARKER) {
+            // must be arithmetic shift
+            __m128i sign = _mm_set1_epi32((int8_t)more >> 7);
+            // q += ((numer ^ sign) - sign);
+            q = _mm_add_epi64(q, _mm_sub_epi64(_mm_xor_si128(numers, sign), sign));
+        }
+        // q >>= denom->mult_path.shift
+        q = libdivide_s64_shift_right_vector(q, more & LIBDIVIDE_64_SHIFT_MASK);
+        q = _mm_add_epi64(q, _mm_srli_epi64(q, 63)); // q += (q < 0)
+        return q;
+    }
+}
+
+__m128i libdivide_s64_branchfree_do_vector(__m128i numers, const struct libdivide_s64_branchfree_t *denom) {
+    int64_t magic = denom->magic;
+    uint8_t more = denom->more;
+    uint8_t shift = more & LIBDIVIDE_64_SHIFT_MASK;
+    // must be arithmetic shift
+    __m128i sign = _mm_set1_epi32((int8_t)more >> 7);
+
+     // libdivide_mullhi_s64(numers, magic);
+    __m128i q = libdivide_mullhi_s64_vector(numers, _mm_set1_epi64x(magic));
+    q = _mm_add_epi64(q, numers); // q += numers
+
+    // If q is non-negative, we have nothing to do.
+    // If q is negative, we want to add either (2**shift)-1 if d is
+    // a power of 2, or (2**shift) if it is not a power of 2.
+    uint32_t is_power_of_2 = (magic == 0);
+    __m128i q_sign = libdivide_s64_signbits(q); // q_sign = q >> 63
+    __m128i mask = _mm_set1_epi64x((1ULL << shift) - is_power_of_2);
+    q = _mm_add_epi64(q, _mm_and_si128(q_sign, mask)); // q = q + (q_sign & mask)
+    q = libdivide_s64_shift_right_vector(q, shift); // q >>= shift
+    q = _mm_sub_epi64(_mm_xor_si128(q, sign), sign); // q = (q ^ sign) - sign
+    return q;
+}
+
+#endif
+
+/////////// C++ stuff
+
+#ifdef __cplusplus
+
+// The C++ divider class is templated on both an integer type
+// (like uint64_t) and an algorithm type.
+// * BRANCHFULL is the default algorithm type.
+// * BRANCHFREE is the branchfree algorithm type.
+enum {
+    BRANCHFULL,
+    BRANCHFREE
+};
+
+#if defined(LIBDIVIDE_AVX512)
+    #define LIBDIVIDE_VECTOR_TYPE __m512i
+#elif defined(LIBDIVIDE_AVX2)
+    #define LIBDIVIDE_VECTOR_TYPE __m256i
+#elif defined(LIBDIVIDE_SSE2)
+    #define LIBDIVIDE_VECTOR_TYPE __m128i
+#endif
+
+#if !defined(LIBDIVIDE_VECTOR_TYPE)
+    #define LIBDIVIDE_DIVIDE_VECTOR(ALGO)
+#else
+    #define LIBDIVIDE_DIVIDE_VECTOR(ALGO) \
+        LIBDIVIDE_VECTOR_TYPE divide(LIBDIVIDE_VECTOR_TYPE n) const { \
+            return libdivide_##ALGO##_do_vector(n, &denom); \
+        }
+#endif
+
+// The DISPATCHER_GEN() macro generates C++ methods (for the given integer
+// and algorithm types) that redirect to libdivide's C API.
+#define DISPATCHER_GEN(T, ALGO) \
+    libdivide_##ALGO##_t denom; \
+    dispatcher() { } \
+    dispatcher(T d) \
+        : denom(libdivide_##ALGO##_gen(d)) \
+    { } \
+    T divide(T n) const { \
+        return libdivide_##ALGO##_do(n, &denom); \
+    } \
+    LIBDIVIDE_DIVIDE_VECTOR(ALGO) \
+    T recover() const { \
+        return libdivide_##ALGO##_recover(&denom); \
+    }
+
+// The dispatcher selects a specific division algorithm for a given
+// type and ALGO using partial template specialization.
+template<bool IS_INTEGRAL, bool IS_SIGNED, int SIZEOF, int ALGO> struct dispatcher { };
+
+template<> struct dispatcher<true, true, sizeof(int32_t), BRANCHFULL> { DISPATCHER_GEN(int32_t, s32) };
+template<> struct dispatcher<true, true, sizeof(int32_t), BRANCHFREE> { DISPATCHER_GEN(int32_t, s32_branchfree) };
+template<> struct dispatcher<true, false, sizeof(uint32_t), BRANCHFULL> { DISPATCHER_GEN(uint32_t, u32) };
+template<> struct dispatcher<true, false, sizeof(uint32_t), BRANCHFREE> { DISPATCHER_GEN(uint32_t, u32_branchfree) };
+template<> struct dispatcher<true, true, sizeof(int64_t), BRANCHFULL> { DISPATCHER_GEN(int64_t, s64) };
+template<> struct dispatcher<true, true, sizeof(int64_t), BRANCHFREE> { DISPATCHER_GEN(int64_t, s64_branchfree) };
+template<> struct dispatcher<true, false, sizeof(uint64_t), BRANCHFULL> { DISPATCHER_GEN(uint64_t, u64) };
+template<> struct dispatcher<true, false, sizeof(uint64_t), BRANCHFREE> { DISPATCHER_GEN(uint64_t, u64_branchfree) };
+
+// This is the main divider class for use by the user (C++ API).
+// The actual division algorithm is selected using the dispatcher struct
+// based on the integer and algorithm template parameters.
+template<typename T, int ALGO = BRANCHFULL>
+class divider {
+public:
+    // We leave the default constructor empty so that creating
+    // an array of dividers and then initializing them
+    // later doesn't slow us down.
+    divider() { }
+
+    // Constructor that takes the divisor as a parameter
+    divider(T d) : div(d) { }
+
+    // Divides n by the divisor
+    T divide(T n) const {
+        return div.divide(n);
+    }
+
+    // Recovers the divisor, returns the value that was
+    // used to initialize this divider object.
+    T recover() const {
+        return div.recover();
+    }
+
+    bool operator==(const divider<T, ALGO>& other) const {
+        return div.denom.magic == other.denom.magic &&
+               div.denom.more == other.denom.more;
+    }
+
+    bool operator!=(const divider<T, ALGO>& other) const {
+        return !(*this == other);
+    }
+
+#if defined(LIBDIVIDE_VECTOR_TYPE)
+    // Treats the vector as packed integer values with the same type as
+    // the divider (e.g. s32, u32, s64, u64) and divides each of
+    // them by the divider, returning the packed quotients.
+    LIBDIVIDE_VECTOR_TYPE divide(LIBDIVIDE_VECTOR_TYPE n) const {
+        return div.divide(n);
+    }
+#endif
+
+private:
+    // Storage for the actual divisor
+    dispatcher<std::is_integral<T>::value,
+               std::is_signed<T>::value, sizeof(T), ALGO> div;
+};
+
+// Overload of operator / for scalar division
+template<typename T, int ALGO>
+T operator/(T n, const divider<T, ALGO>& div) {
+    return div.divide(n);
+}
+
+// Overload of operator /= for scalar division
+template<typename T, int ALGO>
+T& operator/=(T& n, const divider<T, ALGO>& div) {
+    n = div.divide(n);
+    return n;
+}
+
+#if defined(LIBDIVIDE_VECTOR_TYPE)
+    // Overload of operator / for vector division
+    template<typename T, int ALGO>
+    LIBDIVIDE_VECTOR_TYPE operator/(LIBDIVIDE_VECTOR_TYPE n, const divider<T, ALGO>& div) {
+        return div.divide(n);
+    }
+    // Overload of operator /= for vector division
+    template<typename T, int ALGO>
+    LIBDIVIDE_VECTOR_TYPE& operator/=(LIBDIVIDE_VECTOR_TYPE& n, const divider<T, ALGO>& div) {
+        n = div.divide(n);
+        return n;
+    }
+#endif
+
+// libdivdie::branchfree_divider<T>
+template <typename T>
+using branchfree_divider = divider<T, BRANCHFREE>;
+
+} // namespace libdivide
+
+#endif // __cplusplus
+
+#endif // LIBDIVIDE_H
diff --git a/src/locale/en.po b/src/locale/en.po
index 30ebe4368fe45ddfa5f5be5989f13a6c00e0fcaf..8dd08173d7869cd799490b473c2629bb35306e3f 100644
--- a/src/locale/en.po
+++ b/src/locale/en.po
@@ -466,7 +466,7 @@ msgid ""
 msgstr ""
 
 #: d_clisrv.c:1764
-msgid "has been kicked (Go away)\n"
+msgid "has been kicked (No reason given)\n"
 msgstr ""
 
 #: d_clisrv.c:1768
@@ -474,7 +474,7 @@ msgid "left the game (Broke ping limit)\n"
 msgstr ""
 
 #: d_clisrv.c:1772
-msgid "left the game (Consistency failure)\n"
+msgid "left the game (Synch failure)\n"
 msgstr ""
 
 #: d_clisrv.c:1778
@@ -501,7 +501,7 @@ msgid "left the game\n"
 msgstr ""
 
 #: d_clisrv.c:1798
-msgid "has been banned (Don't come back)\n"
+msgid "has been banned (No reason given)\n"
 msgstr ""
 
 #: d_clisrv.c:1802
diff --git a/src/locale/srb2.pot b/src/locale/srb2.pot
index 960c36dbe8e523d31c666faf2bc4beee3830c0df..cd2db750de93d1a2b3dda973a36fba5492700e1a 100644
--- a/src/locale/srb2.pot
+++ b/src/locale/srb2.pot
@@ -459,7 +459,7 @@ msgid ""
 msgstr ""
 
 #: d_clisrv.c:1889
-msgid "has been kicked (Go away)\n"
+msgid "has been kicked (No reason given)\n"
 msgstr ""
 
 #: d_clisrv.c:1893
@@ -467,7 +467,7 @@ msgid "left the game (Broke ping limit)\n"
 msgstr ""
 
 #: d_clisrv.c:1897
-msgid "left the game (Consistency failure)\n"
+msgid "left the game (Synch failure)\n"
 msgstr ""
 
 #: d_clisrv.c:1903
@@ -494,7 +494,7 @@ msgid "left the game\n"
 msgstr ""
 
 #: d_clisrv.c:1923
-msgid "has been banned (Don't come back)\n"
+msgid "has been banned (No reason given)\n"
 msgstr ""
 
 #: d_clisrv.c:1927
diff --git a/src/lua_baselib.c b/src/lua_baselib.c
index c5f847be63026831eb2fefd6b71637cfa67b3a80..1a0b539206e833f081de2bbe6eaad1e00c28a66d 100644
--- a/src/lua_baselib.c
+++ b/src/lua_baselib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -28,6 +28,7 @@
 #include "console.h"
 #include "d_netcmd.h" // IsPlayerAdmin
 #include "m_menu.h" // Player Setup menu color stuff
+#include "m_misc.h" // M_MapNumber
 
 #include "lua_script.h"
 #include "lua_libs.h"
@@ -242,16 +243,10 @@ static const char *GetUserdataUType(lua_State *L)
 //   or players[0].powers -> "player_t.powers"
 static int lib_userdataType(lua_State *L)
 {
-	int type;
 	lua_settop(L, 1); // pop everything except arg 1 (in case somebody decided to add more)
-	type = lua_type(L, 1);
-	if (type == LUA_TLIGHTUSERDATA || type == LUA_TUSERDATA)
-	{
-		lua_pushstring(L, GetUserdataUType(L));
-		return 1;
-	}
-	else
-		return luaL_typerror(L, 1, "userdata");
+	luaL_checktype(L, 1, LUA_TUSERDATA);
+	lua_pushstring(L, GetUserdataUType(L));
+	return 1;
 }
 
 // Takes a metatable as first and only argument
@@ -363,6 +358,23 @@ static int lib_pGetColorAfter(lua_State *L)
 	return 1;
 }
 
+// M_MISC
+//////////////
+
+static int lib_mMapNumber(lua_State *L)
+{
+	const char *arg = luaL_checkstring(L, 1);
+	size_t len = strlen(arg);
+	if (len == 2 || len == 5) {
+		char first = arg[len-2];
+		char second = arg[len-1];
+		lua_pushinteger(L, M_MapNumber(first, second));
+	} else {
+		lua_pushinteger(L, 0);
+	}
+	return 1;
+}
+
 // M_RANDOM
 //////////////
 
@@ -432,7 +444,7 @@ static int lib_pAproxDistance(lua_State *L)
 	fixed_t dx = luaL_checkfixed(L, 1);
 	fixed_t dy = luaL_checkfixed(L, 2);
 	//HUDSAFE
-	lua_pushfixed(L, P_AproxDistance(dx, dy));
+	lua_pushfixed(L, R_PointToDist2(0, 0, dx, dy));
 	return 1;
 }
 
@@ -1050,48 +1062,56 @@ static int lib_pSceneryXYMovement(lua_State *L)
 static int lib_pZMovement(lua_State *L)
 {
 	mobj_t *actor = *((mobj_t **)luaL_checkudata(L, 1, META_MOBJ));
+	mobj_t *ptmthing = tmthing;
 	NOHUD
 	INLEVEL
 	if (!actor)
 		return LUA_ErrInvalid(L, "mobj_t");
 	lua_pushboolean(L, P_ZMovement(actor));
 	P_CheckPosition(actor, actor->x, actor->y);
+	P_SetTarget(&tmthing, ptmthing);
 	return 1;
 }
 
 static int lib_pRingZMovement(lua_State *L)
 {
 	mobj_t *actor = *((mobj_t **)luaL_checkudata(L, 1, META_MOBJ));
+	mobj_t *ptmthing = tmthing;
 	NOHUD
 	INLEVEL
 	if (!actor)
 		return LUA_ErrInvalid(L, "mobj_t");
 	P_RingZMovement(actor);
 	P_CheckPosition(actor, actor->x, actor->y);
+	P_SetTarget(&tmthing, ptmthing);
 	return 0;
 }
 
 static int lib_pSceneryZMovement(lua_State *L)
 {
 	mobj_t *actor = *((mobj_t **)luaL_checkudata(L, 1, META_MOBJ));
+	mobj_t *ptmthing = tmthing;
 	NOHUD
 	INLEVEL
 	if (!actor)
 		return LUA_ErrInvalid(L, "mobj_t");
 	lua_pushboolean(L, P_SceneryZMovement(actor));
 	P_CheckPosition(actor, actor->x, actor->y);
+	P_SetTarget(&tmthing, ptmthing);
 	return 1;
 }
 
 static int lib_pPlayerZMovement(lua_State *L)
 {
 	mobj_t *actor = *((mobj_t **)luaL_checkudata(L, 1, META_MOBJ));
+	mobj_t *ptmthing = tmthing;
 	NOHUD
 	INLEVEL
 	if (!actor)
 		return LUA_ErrInvalid(L, "mobj_t");
 	P_PlayerZMovement(actor);
 	P_CheckPosition(actor, actor->x, actor->y);
+	P_SetTarget(&tmthing, ptmthing);
 	return 0;
 }
 
@@ -1478,11 +1498,13 @@ static int lib_pSpawnSkidDust(lua_State *L)
 static int lib_pMovePlayer(lua_State *L)
 {
 	player_t *player = *((player_t **)luaL_checkudata(L, 1, META_PLAYER));
+	mobj_t *ptmthing = tmthing;
 	NOHUD
 	INLEVEL
 	if (!player)
 		return LUA_ErrInvalid(L, "player_t");
 	P_MovePlayer(player);
+	P_SetTarget(&tmthing, ptmthing);
 	return 0;
 }
 
@@ -1671,6 +1693,26 @@ static int lib_pSwitchShield(lua_State *L)
 	return 0;
 }
 
+static int lib_pPlayerCanEnterSpinGaps(lua_State *L)
+{
+	player_t *player = *((player_t **)luaL_checkudata(L, 1, META_PLAYER));
+	INLEVEL
+	if (!player)
+		return LUA_ErrInvalid(L, "player_t");
+	lua_pushboolean(L, P_PlayerCanEnterSpinGaps(player));
+	return 1;
+}
+
+static int lib_pPlayerShouldUseSpinHeight(lua_State *L)
+{
+	player_t *player = *((player_t **)luaL_checkudata(L, 1, META_PLAYER));
+	INLEVEL
+	if (!player)
+		return LUA_ErrInvalid(L, "player_t");
+	lua_pushboolean(L, P_PlayerShouldUseSpinHeight(player));
+	return 1;
+}
+
 // P_MAP
 ///////////
 
@@ -2494,6 +2536,17 @@ static int lib_pGetZAt(lua_State *L)
 	return 1;
 }
 
+static int lib_pButteredSlope(lua_State *L)
+{
+	mobj_t *mobj = *((mobj_t **)luaL_checkudata(L, 1, META_MOBJ));
+	NOHUD
+	INLEVEL
+	if (!mobj)
+		return LUA_ErrInvalid(L, "mobj_t");
+	P_ButteredSlope(mobj);
+	return 0;
+}
+
 // R_DEFS
 ////////////
 
@@ -2808,46 +2861,13 @@ static int lib_sStopSoundByID(lua_State *L)
 
 static int lib_sChangeMusic(lua_State *L)
 {
-#ifdef MUSICSLOT_COMPATIBILITY
-	const char *music_name;
-	UINT32 music_num, position, prefadems, fadeinms;
-	char music_compat_name[7];
+	UINT32 position, prefadems, fadeinms;
 
-	boolean looping;
-	player_t *player = NULL;
-	UINT16 music_flags = 0;
-	//NOHUD
-
-	if (lua_isnumber(L, 1))
-	{
-		music_num = (UINT32)luaL_checkinteger(L, 1);
-		music_flags = (UINT16)(music_num & 0x0000FFFF);
-		if (music_flags && music_flags <= 1035)
-			snprintf(music_compat_name, 7, "%sM", G_BuildMapName((INT32)music_flags));
-		else if (music_flags && music_flags <= 1050)
-			strncpy(music_compat_name, compat_special_music_slots[music_flags - 1036], 7);
-		else
-			music_compat_name[0] = 0; // becomes empty string
-		music_compat_name[6] = 0;
-		music_name = (const char *)&music_compat_name;
-		music_flags = 0;
-	}
-	else
-	{
-		music_num = 0;
-		music_name = luaL_checkstring(L, 1);
-	}
-
-	looping = (boolean)lua_opttrueboolean(L, 2);
-
-#else
 	const char *music_name = luaL_checkstring(L, 1);
 	boolean looping = (boolean)lua_opttrueboolean(L, 2);
 	player_t *player = NULL;
 	UINT16 music_flags = 0;
-	//NOHUD
 
-#endif
 	if (!lua_isnone(L, 3) && lua_isuserdata(L, 3))
 	{
 		player = *((player_t **)luaL_checkudata(L, 3, META_PLAYER));
@@ -2855,13 +2875,7 @@ static int lib_sChangeMusic(lua_State *L)
 			return LUA_ErrInvalid(L, "player_t");
 	}
 
-#ifdef MUSICSLOT_COMPATIBILITY
-	if (music_num)
-		music_flags = (UINT16)((music_num & 0x7FFF0000) >> 16);
-	else
-#endif
 	music_flags = (UINT16)luaL_optinteger(L, 4, 0);
-
 	position = (UINT32)luaL_optinteger(L, 5, 0);
 	prefadems = (UINT32)luaL_optinteger(L, 6, 0);
 	fadeinms = (UINT32)luaL_optinteger(L, 7, 0);
@@ -3158,33 +3172,7 @@ static int lib_sMusicExists(lua_State *L)
 {
 	boolean checkMIDI = lua_opttrueboolean(L, 2);
 	boolean checkDigi = lua_opttrueboolean(L, 3);
-#ifdef MUSICSLOT_COMPATIBILITY
-	const char *music_name;
-	UINT32 music_num;
-	char music_compat_name[7];
-	UINT16 music_flags = 0;
-	NOHUD
-	if (lua_isnumber(L, 1))
-	{
-		music_num = (UINT32)luaL_checkinteger(L, 1);
-		music_flags = (UINT16)(music_num & 0x0000FFFF);
-		if (music_flags && music_flags <= 1035)
-			snprintf(music_compat_name, 7, "%sM", G_BuildMapName((INT32)music_flags));
-		else if (music_flags && music_flags <= 1050)
-			strncpy(music_compat_name, compat_special_music_slots[music_flags - 1036], 7);
-		else
-			music_compat_name[0] = 0; // becomes empty string
-		music_compat_name[6] = 0;
-		music_name = (const char *)&music_compat_name;
-	}
-	else
-	{
-		music_num = 0;
-		music_name = luaL_checkstring(L, 1);
-	}
-#else
 	const char *music_name = luaL_checkstring(L, 1);
-#endif
 	NOHUD
 	lua_pushboolean(L, S_MusicExists(music_name, checkMIDI, checkDigi));
 	return 1;
@@ -3764,6 +3752,9 @@ static luaL_Reg lib[] = {
 	{"M_GetColorAfter",lib_pGetColorAfter},
 	{"M_GetColorBefore",lib_pGetColorBefore},
 
+	// m_misc
+	{"M_MapNumber",lib_mMapNumber},
+
 	// m_random
 	{"P_RandomFixed",lib_pRandomFixed},
 	{"P_RandomByte",lib_pRandomByte},
@@ -3872,6 +3863,8 @@ static luaL_Reg lib[] = {
 	{"P_SpawnSpinMobj",lib_pSpawnSpinMobj},
 	{"P_Telekinesis",lib_pTelekinesis},
 	{"P_SwitchShield",lib_pSwitchShield},
+	{"P_PlayerCanEnterSpinGaps",lib_pPlayerCanEnterSpinGaps},
+	{"P_PlayerShouldUseSpinHeight",lib_pPlayerShouldUseSpinHeight},
 
 	// p_map
 	{"P_CheckPosition",lib_pCheckPosition},
@@ -3932,6 +3925,7 @@ static luaL_Reg lib[] = {
 
 	// p_slopes
 	{"P_GetZAt",lib_pGetZAt},
+	{"P_ButteredSlope",lib_pButteredSlope},
 
 	// r_defs
 	{"R_PointToAngle",lib_rPointToAngle},
diff --git a/src/lua_blockmaplib.c b/src/lua_blockmaplib.c
index 1949d56bb56fdca88c46005ae3118affc4e9c1df..9089d19b6a02c5126aeefde5e74aa1ec3ff8511e 100644
--- a/src/lua_blockmaplib.c
+++ b/src/lua_blockmaplib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2016-2020 by Iestyn "Monster Iestyn" Jealous.
-// Copyright (C) 2016-2020 by Sonic Team Junior.
+// Copyright (C) 2016-2021 by Iestyn "Monster Iestyn" Jealous.
+// Copyright (C) 2016-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/lua_consolelib.c b/src/lua_consolelib.c
index 84bfeaee2c07dbbae2257b083635eb9bb39e94fb..414d9692a08fea3681a8ea0bdba654c022611440 100644
--- a/src/lua_consolelib.c
+++ b/src/lua_consolelib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -28,7 +28,7 @@ return luaL_error(L, "HUD rendering code should not call this function!");
 #define NOHOOK if (!lua_lumploading)\
 		return luaL_error(L, "This function cannot be called from within a hook or coroutine!");
 
-static const char *cvname = NULL;
+static consvar_t *this_cvar;
 
 void Got_Luacmd(UINT8 **cp, INT32 playernum)
 {
@@ -273,34 +273,29 @@ static int lib_comBufInsertText(lua_State *L)
 	return 0;
 }
 
-void LUA_CVarChanged(const char *name)
+void LUA_CVarChanged(void *cvar)
 {
-	cvname = name;
+	this_cvar = cvar;
 }
 
 static void Lua_OnChange(void)
 {
-	I_Assert(gL != NULL);
-	I_Assert(cvname != NULL);
-
 	/// \todo Network this! XD_LUAVAR
 
-	lua_settop(gL, 0); // Just in case...
 	lua_pushcfunction(gL, LUA_GetErrorMessage);
+	lua_insert(gL, 1); // Because LUA_Call wants it at index 1.
 
 	// From CV_OnChange registry field, get the function for this cvar by name.
 	lua_getfield(gL, LUA_REGISTRYINDEX, "CV_OnChange");
 	I_Assert(lua_istable(gL, -1));
-	lua_getfield(gL, -1, cvname); // get function
+	lua_pushlightuserdata(gL, this_cvar);
+	lua_rawget(gL, -2); // get function
 
-	// From the CV_Vars registry field, get the cvar's userdata by name.
-	lua_getfield(gL, LUA_REGISTRYINDEX, "CV_Vars");
-	I_Assert(lua_istable(gL, -1));
-	lua_getfield(gL, -1, cvname); // get consvar_t* userdata.
-	lua_remove(gL, -2); // pop the CV_Vars table.
+	LUA_RawPushUserdata(gL, this_cvar);
 
 	LUA_Call(gL, 1, 0, 1); // call function(cvar)
 	lua_pop(gL, 1); // pop CV_OnChange table
+	lua_remove(gL, 1); // remove LUA_GetErrorMessage
 }
 
 static int lib_cvRegisterVar(lua_State *L)
@@ -311,15 +306,12 @@ static int lib_cvRegisterVar(lua_State *L)
 	luaL_checktype(L, 1, LUA_TTABLE);
 	lua_settop(L, 1); // Clear out all other possible arguments, leaving only the first one.
 	NOHOOK
-	cvar = lua_newuserdata(L, sizeof(consvar_t));
-	luaL_getmetatable(L, META_CVAR);
-	lua_setmetatable(L, -2);
+	cvar = ZZ_Calloc(sizeof(consvar_t));
+	LUA_PushUserdata(L, cvar, META_CVAR);
 
 #define FIELDERROR(f, e) luaL_error(L, "bad value for " LUA_QL(f) " in table passed to " LUA_QL("CV_RegisterVar") " (%s)", e);
 #define TYPEERROR(f, t) FIELDERROR(f, va("%s expected, got %s", lua_typename(L, t), luaL_typename(L, -1)))
 
-	memset(cvar, 0x00, sizeof(consvar_t)); // zero everything by default
-
 	lua_pushnil(L);
 	while (lua_next(L, 1)) {
 		// stack: cvar table, cvar userdata, key/index, value
@@ -368,7 +360,7 @@ static int lib_cvRegisterVar(lua_State *L)
 
 				lua_getfield(L, LUA_REGISTRYINDEX, "CV_PossibleValue");
 				I_Assert(lua_istable(L, 5));
-				lua_pushvalue(L, 2); // cvar userdata
+				lua_pushlightuserdata(L, cvar);
 				cvpv = lua_newuserdata(L, sizeof(CV_PossibleValue_t) * (count+1));
 				lua_rawset(L, 5);
 				lua_pop(L, 1); // pop CV_PossibleValue registry table
@@ -396,8 +388,9 @@ static int lib_cvRegisterVar(lua_State *L)
 				TYPEERROR("func", LUA_TFUNCTION)
 			lua_getfield(L, LUA_REGISTRYINDEX, "CV_OnChange");
 			I_Assert(lua_istable(L, 5));
+			lua_pushlightuserdata(L, cvar);
 			lua_pushvalue(L, 4);
-			lua_setfield(L, 5, cvar->name);
+			lua_rawset(L, 5);
 			lua_pop(L, 1);
 			cvar->func = Lua_OnChange;
 		}
@@ -414,19 +407,6 @@ static int lib_cvRegisterVar(lua_State *L)
 	if ((cvar->flags & CV_CALL) && !cvar->func)
 		return luaL_error(L, M_GetText("Variable %s has CV_CALL without a function\n"), cvar->name);
 
-	// stack: cvar table, cvar userdata
-	lua_getfield(L, LUA_REGISTRYINDEX, "CV_Vars");
-	I_Assert(lua_istable(L, 3));
-
-	lua_getfield(L, 3, cvar->name);
-	if (lua_type(L, -1) != LUA_TNIL)
-		return luaL_error(L, M_GetText("Variable %s is already defined\n"), cvar->name);
-	lua_pop(L, 1);
-
-	lua_pushvalue(L, 2);
-	lua_setfield(L, 3, cvar->name);
-	lua_pop(L, 1);
-
 	// actually time to register it to the console now! Finally!
 	cvar->flags |= CV_MODIFIED;
 	CV_RegisterVar(cvar);
@@ -439,7 +419,8 @@ static int lib_cvRegisterVar(lua_State *L)
 
 static int lib_cvFindVar(lua_State *L)
 {
-	LUA_PushLightUserdata(L, CV_FindVar(luaL_checkstring(L,1)), META_CVAR);
+	const char *name = luaL_checkstring(L, 1);
+	LUA_PushUserdata(L, CV_FindVar(name), META_CVAR);
 	return 1;
 }
 
@@ -449,7 +430,7 @@ static int CVarSetFunction
 		void (*Set)(consvar_t *, const char *),
 		void (*SetValue)(consvar_t *, INT32)
 ){
-	consvar_t *cvar = (consvar_t *)luaL_checkudata(L, 1, META_CVAR);
+	consvar_t *cvar = *(consvar_t **)luaL_checkudata(L, 1, META_CVAR);
 
 	if (cvar->flags & CV_NOLUA)
 		return luaL_error(L, "Variable %s cannot be set from Lua.", cvar->name);
@@ -481,7 +462,7 @@ static int lib_cvStealthSet(lua_State *L)
 
 static int lib_cvAddValue(lua_State *L)
 {
-	consvar_t *cvar = (consvar_t *)luaL_checkudata(L, 1, META_CVAR);
+	consvar_t *cvar = *(consvar_t **)luaL_checkudata(L, 1, META_CVAR);
 
 	if (cvar->flags & CV_NOLUA)
 		return luaL_error(L, "Variable %s cannot be set from Lua.", cvar->name);
@@ -540,7 +521,7 @@ static luaL_Reg lib[] = {
 
 static int cvar_get(lua_State *L)
 {
-	consvar_t *cvar = (consvar_t *)luaL_checkudata(L, 1, META_CVAR);
+	consvar_t *cvar = *(consvar_t **)luaL_checkudata(L, 1, META_CVAR);
 	const char *field = luaL_checkstring(L, 2);
 
 	if(fastcmp(field,"name"))
diff --git a/src/lua_hud.h b/src/lua_hud.h
index 4a7c596c8a95e7d343fd9da73b8aa50bcaa344b0..d2f5bceca6f0d56745d2a40c3826ea1e594b9718 100644
--- a/src/lua_hud.h
+++ b/src/lua_hud.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2014-2016 by John "JTE" Muniz.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -13,6 +13,7 @@
 enum hud {
 	hud_stagetitle = 0,
 	hud_textspectator,
+	hud_crosshair,
 	// Singleplayer / Co-op
 	hud_score,
 	hud_time,
@@ -36,7 +37,9 @@ enum hud {
 	hud_tabemblems,
 	// Intermission
 	hud_intermissiontally,
+	hud_intermissiontitletext,
 	hud_intermissionmessages,
+	hud_intermissionemeralds,
 	hud_MAX
 };
 
@@ -48,4 +51,4 @@ void LUAh_GameHUD(player_t *stplyr);
 void LUAh_ScoresHUD(void);
 void LUAh_TitleHUD(void);
 void LUAh_TitleCardHUD(player_t *stplayr);
-void LUAh_IntermissionHUD(void);
+void LUAh_IntermissionHUD(boolean failedstage);
diff --git a/src/lua_hudlib.c b/src/lua_hudlib.c
index e58cd4a584d2c3e2eddf6a4096c142e6ed628a1f..9a3e676d5fd6168fd64bfaaa44466a5e85e8949c 100644
--- a/src/lua_hudlib.c
+++ b/src/lua_hudlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2014-2016 by John "JTE" Muniz.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -39,6 +39,7 @@ static UINT8 hudAvailable; // hud hooks field
 static const char *const hud_disable_options[] = {
 	"stagetitle",
 	"textspectator",
+	"crosshair",
 
 	"score",
 	"time",
@@ -62,7 +63,9 @@ static const char *const hud_disable_options[] = {
 	"tabemblems",
 
 	"intermissiontally",
+	"intermissiontitletext",
 	"intermissionmessages",
+	"intermissionemeralds",
 	NULL};
 
 enum hudinfo {
@@ -856,6 +859,26 @@ static int libd_drawScaledNameTag(lua_State *L)
 	return 0;
 }
 
+static int libd_drawLevelTitle(lua_State *L)
+{
+	INT32 x;
+	INT32 y;
+	const char *str;
+	INT32 flags;
+
+	HUDONLY
+
+	x = luaL_checkinteger(L, 1);
+	y = luaL_checkinteger(L, 2);
+	str = luaL_checkstring(L, 3);
+	flags = luaL_optinteger(L, 4, 0);
+
+	flags &= ~V_PARAMMASK; // Don't let crashes happen.
+
+	V_DrawLevelTitle(x, y, flags, str);
+	return 0;
+}
+
 static int libd_stringWidth(lua_State *L)
 {
 	const char *str = luaL_checkstring(L, 1);
@@ -885,6 +908,20 @@ static int libd_nameTagWidth(lua_State *L)
 	return 1;
 }
 
+static int libd_levelTitleWidth(lua_State *L)
+{
+	HUDONLY
+	lua_pushinteger(L, V_LevelNameWidth(luaL_checkstring(L, 1)));
+	return 1;
+}
+
+static int libd_levelTitleHeight(lua_State *L)
+{
+	HUDONLY
+	lua_pushinteger(L, V_LevelNameHeight(luaL_checkstring(L, 1)));
+	return 1;
+}
+
 static int libd_getColormap(lua_State *L)
 {
 	INT32 skinnum = TC_DEFAULT;
@@ -1090,10 +1127,13 @@ static luaL_Reg lib_draw[] = {
 	{"drawString", libd_drawString},
 	{"drawNameTag", libd_drawNameTag},
 	{"drawScaledNameTag", libd_drawScaledNameTag},
+	{"drawLevelTitle", libd_drawLevelTitle},
 	{"fadeScreen", libd_fadeScreen},
 	// misc
 	{"stringWidth", libd_stringWidth},
 	{"nameTagWidth", libd_nameTagWidth},
+	{"levelTitleWidth", libd_levelTitleWidth},
+	{"levelTitleHeight", libd_levelTitleHeight},
 	// m_random
 	{"RandomFixed",libd_RandomFixed},
 	{"RandomByte",libd_RandomByte},
@@ -1383,7 +1423,7 @@ void LUAh_TitleCardHUD(player_t *stplayr)
 	hud_running = false;
 }
 
-void LUAh_IntermissionHUD(void)
+void LUAh_IntermissionHUD(boolean failedstage)
 {
 	if (!gL || !(hudAvailable & (1<<hudhook_intermission)))
 		return;
@@ -1401,10 +1441,14 @@ void LUAh_IntermissionHUD(void)
 	lua_rawgeti(gL, -2, 1); // HUD[1] = lib_draw
 	I_Assert(lua_istable(gL, -1));
 	lua_remove(gL, -3); // pop HUD
+
+	lua_pushboolean(gL, failedstage); // stagefailed
 	lua_pushnil(gL);
-	while (lua_next(gL, -3) != 0) {
-		lua_pushvalue(gL, -3); // graphics library (HUD[1])
-		LUA_Call(gL, 1, 0, 1);
+
+	while (lua_next(gL, -4) != 0) {
+		lua_pushvalue(gL, -4); // graphics library (HUD[1])
+		lua_pushvalue(gL, -4); // stagefailed
+		LUA_Call(gL, 2, 0, 1);
 	}
 	lua_settop(gL, 0);
 	hud_running = false;
diff --git a/src/lua_infolib.c b/src/lua_infolib.c
index 4c6ef35287500d973d85af6d76412a0f4bc12202..af2d99a0c015cf05001ccaa31b3c54fffa09ea04 100644
--- a/src/lua_infolib.c
+++ b/src/lua_infolib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1635,8 +1635,10 @@ static int skincolor_get(lua_State *L)
 		lua_pushinteger(L, info->chatcolor);
 	else if (fastcmp(field,"accessible"))
 		lua_pushboolean(L, info->accessible);
-	else
+	else {
 		CONS_Debug(DBG_LUA, M_GetText("'%s' has no field named '%s'; returning nil.\n"), "skincolor_t", field);
+		return 0;
+	}
 	return 1;
 }
 
diff --git a/src/lua_libs.h b/src/lua_libs.h
index fbe8d48780f35009dfb0ca9b8f7209664297017c..05061f118f29f6cdee74efb1db63bb2def90b44f 100644
--- a/src/lua_libs.h
+++ b/src/lua_libs.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/lua_maplib.c b/src/lua_maplib.c
index 6a9091cc949f364c8e01fd19d2b3e0eb740d44c8..9031c99f13a981fc6c235caea12a0fbfb9201e49 100644
--- a/src/lua_maplib.c
+++ b/src/lua_maplib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -583,7 +583,7 @@ static int sector_get(lua_State *L)
 		lua_pushinteger(L, sector->special);
 		return 1;
 	case sector_tag:
-		lua_pushinteger(L, Tag_FGet(&sector->tags));
+		lua_pushinteger(L, (UINT16)Tag_FGet(&sector->tags));
 		return 1;
 	case sector_taglist:
 		LUA_PushUserdata(L, &sector->tags, META_SECTORTAGLIST);
@@ -828,6 +828,17 @@ static int line_get(lua_State *L)
 		lua_pushinteger(L, line->special);
 		return 1;
 	case line_tag:
+		// HELLO
+		// THIS IS LJ SONIC
+		// HOW IS YOUR DAY?
+		// BY THE WAY WHEN 2.3 OR 3.0 OR 4.0 OR SRB3 OR SRB4 OR WHATEVER IS OUT
+		// YOU SHOULD REMEMBER TO CHANGE THIS SO IT ALWAYS RETURNS A UNSIGNED VALUE
+		// HAVE A NICE DAY
+		//
+		//
+		//
+		//
+		// you are ugly
 		lua_pushinteger(L, Tag_FGet(&line->tags));
 		return 1;
 	case line_taglist:
diff --git a/src/lua_mathlib.c b/src/lua_mathlib.c
index 10ba42ee0b78e2f834a4748edcd4deb6176fab4f..e6f8c98c1371e81295a64d8d14a4039239bc4522 100644
--- a/src/lua_mathlib.c
+++ b/src/lua_mathlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -15,6 +15,8 @@
 #include "tables.h"
 #include "p_local.h"
 #include "doomstat.h" // for ALL7EMERALDS
+#include "r_main.h" // for R_PointToDist2
+#include "m_easing.h"
 
 #include "lua_script.h"
 #include "lua_libs.h"
@@ -86,6 +88,12 @@ static int lib_finetangent(lua_State *L)
 	return 1;
 }
 
+static int lib_fixedacos(lua_State *L)
+{
+	lua_pushangle(L, FixedAcos(luaL_checkfixed(L, 1)));
+	return 1;
+}
+
 // Fixed math
 ////////////////
 
@@ -129,7 +137,7 @@ static int lib_fixedsqrt(lua_State *L)
 
 static int lib_fixedhypot(lua_State *L)
 {
-	lua_pushfixed(L, FixedHypot(luaL_checkfixed(L, 1), luaL_checkfixed(L, 2)));
+	lua_pushfixed(L, R_PointToDist2(0, 0, luaL_checkfixed(L, 1), luaL_checkfixed(L, 2)));
 	return 1;
 }
 
@@ -184,13 +192,14 @@ static int lib_coloropposite(lua_State *L)
 	return 2;
 }
 
-static luaL_Reg lib[] = {
+static luaL_Reg lib_math[] = {
 	{"abs", lib_abs},
 	{"min", lib_min},
 	{"max", lib_max},
 	{"sin", lib_finesine},
 	{"cos", lib_finecosine},
 	{"tan", lib_finetangent},
+	{"acos", lib_fixedacos},
 	{"FixedAngle", lib_fixedangle},
 	{"fixangle"  , lib_fixedangle},
 	{"AngleFixed", lib_anglefixed},
@@ -222,9 +231,123 @@ static luaL_Reg lib[] = {
 	{NULL, NULL}
 };
 
+//
+// Easing functions
+//
+
+#define EASINGFUNC(easetype) \
+{ \
+	fixed_t start = 0; \
+	fixed_t end = FRACUNIT; \
+	fixed_t t = luaL_checkfixed(L, 1); \
+	int n = lua_gettop(L); \
+	if (n == 2) \
+		end = luaL_checkfixed(L, 2); \
+	else if (n >= 3) \
+	{ \
+		start = luaL_checkfixed(L, 2); \
+		end = luaL_checkfixed(L, 3); \
+	} \
+	lua_pushfixed(L, (Easing_ ## easetype)(t, start, end)); \
+	return 1; \
+} \
+
+static int lib_easelinear(lua_State *L) { EASINGFUNC(Linear) }
+
+static int lib_easeinsine(lua_State *L) { EASINGFUNC(InSine) }
+static int lib_easeoutsine(lua_State *L) { EASINGFUNC(OutSine) }
+static int lib_easeinoutsine(lua_State *L) { EASINGFUNC(InOutSine) }
+
+static int lib_easeinquad(lua_State *L) { EASINGFUNC(InQuad) }
+static int lib_easeoutquad(lua_State *L) { EASINGFUNC(OutQuad) }
+static int lib_easeinoutquad(lua_State *L) { EASINGFUNC(InOutQuad) }
+
+static int lib_easeincubic(lua_State *L) { EASINGFUNC(InCubic) }
+static int lib_easeoutcubic(lua_State *L) { EASINGFUNC(OutCubic) }
+static int lib_easeinoutcubic(lua_State *L) { EASINGFUNC(InOutCubic) }
+
+static int lib_easeinquart(lua_State *L) { EASINGFUNC(InQuart) }
+static int lib_easeoutquart(lua_State *L) { EASINGFUNC(OutQuart) }
+static int lib_easeinoutquart(lua_State *L) { EASINGFUNC(InOutQuart) }
+
+static int lib_easeinquint(lua_State *L) { EASINGFUNC(InQuint) }
+static int lib_easeoutquint(lua_State *L) { EASINGFUNC(OutQuint) }
+static int lib_easeinoutquint(lua_State *L) { EASINGFUNC(InOutQuint) }
+
+static int lib_easeinexpo(lua_State *L) { EASINGFUNC(InExpo) }
+static int lib_easeoutexpo(lua_State *L) { EASINGFUNC(OutExpo) }
+static int lib_easeinoutexpo(lua_State *L) { EASINGFUNC(InOutExpo) }
+
+#undef EASINGFUNC
+
+#define EASINGFUNC(easetype) \
+{ \
+	boolean useparam = false; \
+	fixed_t param = 0; \
+	fixed_t start = 0; \
+	fixed_t end = FRACUNIT; \
+	fixed_t t = luaL_checkfixed(L, 1); \
+	int n = lua_gettop(L); \
+	if (n == 2) \
+		end = luaL_checkfixed(L, 2); \
+	else if (n >= 3) \
+	{ \
+		start = (fixed_t)luaL_optinteger(L, 2, start); \
+		end = (fixed_t)luaL_optinteger(L, 3, end); \
+		if ((n >= 4) && (useparam = (!lua_isnil(L, 4)))) \
+			param = luaL_checkfixed(L, 4); \
+	} \
+	if (useparam) \
+		lua_pushfixed(L, (Easing_ ## easetype ## Parameterized)(t, start, end, param)); \
+	else \
+		lua_pushfixed(L, (Easing_ ## easetype)(t, start, end)); \
+	return 1; \
+} \
+
+static int lib_easeinback(lua_State *L) { EASINGFUNC(InBack) }
+static int lib_easeoutback(lua_State *L) { EASINGFUNC(OutBack) }
+static int lib_easeinoutback(lua_State *L) { EASINGFUNC(InOutBack) }
+
+#undef EASINGFUNC
+
+static luaL_Reg lib_ease[] = {
+	{"linear", lib_easelinear},
+
+	{"insine", lib_easeinsine},
+	{"outsine", lib_easeoutsine},
+	{"inoutsine", lib_easeinoutsine},
+
+	{"inquad", lib_easeinquad},
+	{"outquad", lib_easeoutquad},
+	{"inoutquad", lib_easeinoutquad},
+
+	{"incubic", lib_easeincubic},
+	{"outcubic", lib_easeoutcubic},
+	{"inoutcubic", lib_easeinoutcubic},
+
+	{"inquart", lib_easeinquart},
+	{"outquart", lib_easeoutquart},
+	{"inoutquart", lib_easeinoutquart},
+
+	{"inquint", lib_easeinquint},
+	{"outquint", lib_easeoutquint},
+	{"inoutquint", lib_easeinoutquint},
+
+	{"inexpo", lib_easeinexpo},
+	{"outexpo", lib_easeoutexpo},
+	{"inoutexpo", lib_easeinoutexpo},
+
+	{"inback", lib_easeinback},
+	{"outback", lib_easeoutback},
+	{"inoutback", lib_easeinoutback},
+
+	{NULL, NULL}
+};
+
 int LUA_MathLib(lua_State *L)
 {
 	lua_pushvalue(L, LUA_GLOBALSINDEX);
-	luaL_register(L, NULL, lib);
+	luaL_register(L, NULL, lib_math);
+	luaL_register(L, "ease", lib_ease);
 	return 0;
 }
diff --git a/src/lua_mobjlib.c b/src/lua_mobjlib.c
index 65adceb154cb66424c73b3415253891307a9f706..cf8ccab2cec113df3e7038c5657a0be395b1f7ea 100644
--- a/src/lua_mobjlib.c
+++ b/src/lua_mobjlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -12,6 +12,7 @@
 
 #include "doomdef.h"
 #include "fastcmp.h"
+#include "r_data.h"
 #include "r_skins.h"
 #include "p_local.h"
 #include "g_game.h"
@@ -654,8 +655,13 @@ static int mobj_set(lua_State *L)
 		break;
 	}
 	case mobj_blendmode:
-		mo->blendmode = (INT32)luaL_checkinteger(L, 3);
+	{
+		INT32 blendmode = (INT32)luaL_checkinteger(L, 3);
+		if (blendmode < 0 || blendmode > AST_OVERLAY)
+			return luaL_error(L, "mobj.blendmode %d out of range (0 - %d).", blendmode, AST_OVERLAY);
+		mo->blendmode = blendmode;
 		break;
+	}
 	case mobj_bnext:
 		return NOSETPOS;
 	case mobj_bprev:
diff --git a/src/lua_playerlib.c b/src/lua_playerlib.c
index 0eb54808fb21a90de8ee5b6aaa3d046eff8cfdd1..687cee2eb0dc194c190dec4827fb54a00618ceec 100644
--- a/src/lua_playerlib.c
+++ b/src/lua_playerlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/lua_polyobjlib.c b/src/lua_polyobjlib.c
index 365d970563dd504cc896abaac756fffd6cd2458f..5d76a912de0c06948dee8ecbb8039bfb356033ec 100644
--- a/src/lua_polyobjlib.c
+++ b/src/lua_polyobjlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Iestyn "Monster Iestyn" Jealous.
-// Copyright (C) 2020 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Iestyn "Monster Iestyn" Jealous.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -417,7 +417,7 @@ static int lib_getPolyObject(lua_State *L)
 	{
 		i = luaL_checkinteger(L, 2);
 		if (i < 0 || i >= numPolyObjects)
-			return luaL_error(L, "PolyObjects[] index %d out of range (0 - %d)", i, numPolyObjects-1);
+			return luaL_error(L, "polyobjects[] index %d out of range (0 - %d)", i, numPolyObjects-1);
 		LUA_PushUserdata(L, &PolyObjects[i], META_POLYOBJ);
 		return 1;
 	}
@@ -481,6 +481,6 @@ int LUA_PolyObjLib(lua_State *L)
 			lua_pushcfunction(L, lib_numPolyObjects);
 			lua_setfield(L, -2, "__len");
 		lua_setmetatable(L, -2);
-	lua_setglobal(L, "PolyObjects");
+	lua_setglobal(L, "polyobjects");
 	return 0;
 }
diff --git a/src/lua_script.c b/src/lua_script.c
index 310995de305cb6373344784483d6429691ef0a0c..842a069f9595c343673521576744acf46212b70c 100644
--- a/src/lua_script.c
+++ b/src/lua_script.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -184,6 +184,9 @@ int LUA_PushGlobals(lua_State *L, const char *word)
 	} else if (fastcmp(word,"modeattacking")) {
 		lua_pushboolean(L, modeattacking);
 		return 1;
+	} else if (fastcmp(word,"metalrecording")) {
+		lua_pushboolean(L, metalrecording);
+		return 1;
 	} else if (fastcmp(word,"splitscreen")) {
 		lua_pushboolean(L, splitscreen);
 		return 1;
@@ -333,7 +336,7 @@ int LUA_PushGlobals(lua_State *L, const char *word)
 		return 1;
 	// local player variables, by popular request
 	} else if (fastcmp(word,"consoleplayer")) { // player controlling console (aka local player 1)
-		if (consoleplayer < 0 || !playeringame[consoleplayer])
+		if (!addedtogame || consoleplayer < 0 || !playeringame[consoleplayer])
 			return 0;
 		LUA_PushUserdata(L, &players[consoleplayer], META_PLAYER);
 		return 1;
@@ -380,6 +383,9 @@ int LUA_PushGlobals(lua_State *L, const char *word)
 	} else if (fastcmp(word, "gamestate")) {
 		lua_pushinteger(L, gamestate);
 		return 1;
+	} else if (fastcmp(word, "stagefailed")) {
+		lua_pushboolean(L, stagefailed);
+		return 1;
 	}
 	return 0;
 }
@@ -429,6 +435,8 @@ int LUA_CheckGlobals(lua_State *L, const char *word)
 	}
 	else if (fastcmp(word, "mapmusflags"))
 		mapmusflags = (UINT16)luaL_checkinteger(L, 2);
+	else if (fastcmp(word, "stagefailed"))
+		stagefailed = luaL_checkboolean(L, 2);
 	else
 		return 0;
 
@@ -714,27 +722,6 @@ fixed_t LUA_EvalMath(const char *word)
 	return res;
 }
 
-/*
-LUA_PushUserdata but no userdata is created.
-You can't invalidate it therefore.
-*/
-
-void LUA_PushLightUserdata (lua_State *L, void *data, const char *meta)
-{
-	if (data)
-	{
-		lua_pushlightuserdata(L, data);
-		luaL_getmetatable(L, meta);
-		/*
-		The metatable is the last value on the stack, so this
-		applies it to the second value, which is the userdata.
-		*/
-		lua_setmetatable(L, -2);
-	}
-	else
-		lua_pushnil(L);
-}
-
 // Takes a pointer, any pointer, and a metatable name
 // Creates a userdata for that pointer with the given metatable
 // Pushes it to the stack and stores it in the registry.
diff --git a/src/lua_script.h b/src/lua_script.h
index 3bb692f223a391570654fc2075c5fc6e2745d6ba..e882569414452951429a99986c313137cc9613e9 100644
--- a/src/lua_script.h
+++ b/src/lua_script.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -56,7 +56,7 @@ void LUA_UnArchive(void);
 int LUA_PushGlobals(lua_State *L, const char *word);
 int LUA_CheckGlobals(lua_State *L, const char *word);
 void Got_Luacmd(UINT8 **cp, INT32 playernum); // lua_consolelib.c
-void LUA_CVarChanged(const char *name); // lua_consolelib.c
+void LUA_CVarChanged(void *cvar); // lua_consolelib.c
 int Lua_optoption(lua_State *L, int narg,
 	const char *def, const char *const lst[]);
 void LUA_HookNetArchive(lua_CFunction archFunc);
@@ -87,7 +87,6 @@ typedef enum {
 	LPUSHED_EXISTING,
 } lpushed_t;
 
-void LUA_PushLightUserdata(lua_State *L, void *data, const char *meta);
 void LUA_PushUserdata(lua_State *L, void *data, const char *meta);
 lpushed_t LUA_RawPushUserdata(lua_State *L, void *data);
 
diff --git a/src/lua_skinlib.c b/src/lua_skinlib.c
index 56be6bf4f40504420e7e67cb0c6b60c739a6dfc7..e66a379e9d13549610607b2aad173b29c184494c 100644
--- a/src/lua_skinlib.c
+++ b/src/lua_skinlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2014-2016 by John "JTE" Muniz.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -53,7 +53,6 @@ enum skin {
 	skin_contspeed,
 	skin_contangle,
 	skin_soundsid,
-	skin_availability,
 	skin_sprites
 };
 static const char *const skin_opt[] = {
@@ -91,7 +90,6 @@ static const char *const skin_opt[] = {
 	"contspeed",
 	"contangle",
 	"soundsid",
-	"availability",
 	"sprites",
 	NULL};
 
@@ -209,11 +207,8 @@ static int skin_get(lua_State *L)
 	case skin_soundsid:
 		LUA_PushUserdata(L, skin->soundsid, META_SOUNDSID);
 		break;
-	case skin_availability:
-		lua_pushinteger(L, skin->availability);
-		break;
 	case skin_sprites:
-		LUA_PushLightUserdata(L, skin->sprites, META_SKINSPRITES);
+		LUA_PushUserdata(L, skin->sprites, META_SKINSPRITES);
 		break;
 	}
 	return 1;
@@ -336,13 +331,13 @@ static const char *const sprites_opt[] = {
 // skin.sprites[i] -> sprites[i]
 static int lib_getSkinSprite(lua_State *L)
 {
-	spritedef_t *sprites = (spritedef_t *)luaL_checkudata(L, 1, META_SKINSPRITES);
+	spritedef_t *sprites = *(spritedef_t **)luaL_checkudata(L, 1, META_SKINSPRITES);
 	playersprite_t i = luaL_checkinteger(L, 2);
 
 	if (i < 0 || i >= NUMPLAYERSPRITES*2)
 		return luaL_error(L, LUA_QL("skin_t") " field 'sprites' index %d out of range (0 - %d)", i, (NUMPLAYERSPRITES*2)-1);
 
-	LUA_PushLightUserdata(L, &sprites[i], META_SKINSPRITESLIST);
+	LUA_PushUserdata(L, &sprites[i], META_SKINSPRITESLIST);
 	return 1;
 }
 
@@ -355,7 +350,7 @@ static int lib_numSkinsSprites(lua_State *L)
 
 static int sprite_get(lua_State *L)
 {
-	spritedef_t *sprite = (spritedef_t *)luaL_checkudata(L, 1, META_SKINSPRITESLIST);
+	spritedef_t *sprite = *(spritedef_t **)luaL_checkudata(L, 1, META_SKINSPRITESLIST);
 	enum spritesopt field = luaL_checkoption(L, 2, NULL, sprites_opt);
 
 	switch (field)
diff --git a/src/lua_taglib.c b/src/lua_taglib.c
index c9f320fe8f230524b0b42b10b04022b8d79a5d10..d0cf385a9d89217113d21161df820c5a838e2c01 100644
--- a/src/lua_taglib.c
+++ b/src/lua_taglib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by James R.
-// Copyright (C) 2020 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by James R.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/lua_thinkerlib.c b/src/lua_thinkerlib.c
index 82baa64693472908fb22029a7838ee6f2228e7e3..65bf8c313b14c942e77454f4890a81df62cdfcec 100644
--- a/src/lua_thinkerlib.c
+++ b/src/lua_thinkerlib.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by John "JTE" Muniz.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_aatree.c b/src/m_aatree.c
index c0bb739f8f1c75adbe5c99ef55b59ccf958d1690..b228ed63de0fd6d29d2cfe027a96f9c8eefd2e46 100644
--- a/src/m_aatree.c
+++ b/src/m_aatree.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_aatree.h b/src/m_aatree.h
index b784eb17af61267a681942f34b32bf5d43c91168..5a240394f77920845e53b023f314d223f27076b4 100644
--- a/src/m_aatree.h
+++ b/src/m_aatree.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_anigif.c b/src/m_anigif.c
index 41f99254eff59fea3d80f7592168723d9de7a975..fe04a5cb41fd42141295001d1860161a16c35f3d 100644
--- a/src/m_anigif.c
+++ b/src/m_anigif.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 2013-2016 by Matthew "Kaito Sinclaire" Walsh.
 // Copyright (C) 2013      by "Ninji".
-// Copyright (C) 2013-2020 by Sonic Team Junior.
+// Copyright (C) 2013-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_anigif.h b/src/m_anigif.h
index abe05dd963019c38d23228180ed7495f779ad562..ca7563b1e9c6de3b537e287220cd83fc775d17ae 100644
--- a/src/m_anigif.h
+++ b/src/m_anigif.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2013-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 2013-2020 by Sonic Team Junior.
+// Copyright (C) 2013-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_argv.c b/src/m_argv.c
index 7d43d96bc62f0c20c2b1f1485809defab2bdda0a..453d6e45c1ff9e8ee53c6a44bfe2e774a0efdc6b 100644
--- a/src/m_argv.c
+++ b/src/m_argv.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_argv.h b/src/m_argv.h
index 92770f4e9e9b0c58b3a32ad8b752e62cca65b236..f39db513ffdb0d371e06916a51bd964a2cbf821e 100644
--- a/src/m_argv.h
+++ b/src/m_argv.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_bbox.c b/src/m_bbox.c
index 02d5341643938f4db4134c5324479c03e4859857..e0505fd95a485a4f1fad9eb5e3b004fd22fa6fa2 100644
--- a/src/m_bbox.c
+++ b/src/m_bbox.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_bbox.h b/src/m_bbox.h
index 9b63c61b6de97470a6744af9bd532242ba58abab..c56bd22c06714a7eb93c5cf533f3ea8ed7b342a4 100644
--- a/src/m_bbox.h
+++ b/src/m_bbox.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_cheat.c b/src/m_cheat.c
index 6e0fb8c5c0784f66be508981aa33d75f9a661d89..c958bb4a4de31450276067e730c8c77442b0c800 100644
--- a/src/m_cheat.c
+++ b/src/m_cheat.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_cheat.h b/src/m_cheat.h
index ac2540408d481f0745a756929dbeea219ecbc9bd..ee4ba5f557eafe7c98b85605c08394f5bd28144d 100644
--- a/src/m_cheat.h
+++ b/src/m_cheat.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_cond.c b/src/m_cond.c
index 36fcd7cf295aff241e7637d906381422121bd60a..85d732a48d3d7dea1a8c4289a8acaf24ce859e64 100644
--- a/src/m_cond.c
+++ b/src/m_cond.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -496,6 +496,64 @@ UINT8 M_GotHighEnoughRings(INT32 trings)
 	return false;
 }
 
+// Gets the skin number for a SECRET_SKIN unlockable.
+INT32 M_UnlockableSkinNum(unlockable_t *unlock)
+{
+	if (unlock->type != SECRET_SKIN)
+	{
+		// This isn't a skin unlockable...
+		return -1;
+	}
+
+	if (unlock->stringVar && strcmp(unlock->stringVar, ""))
+	{
+		// Get the skin from the string.
+		INT32 skinnum = R_SkinAvailable(unlock->stringVar);
+		if (skinnum != -1)
+		{
+			return skinnum;
+		}
+	}
+
+	if (unlock->variable >= 0 && unlock->variable < numskins)
+	{
+		// Use the number directly.
+		return unlock->variable;
+	}
+
+	// Invalid skin unlockable.
+	return -1;
+}
+
+// Gets the skin number for a ET_SKIN emblem.
+INT32 M_EmblemSkinNum(emblem_t *emblem)
+{
+	if (emblem->type != ET_SKIN)
+	{
+		// This isn't a skin emblem...
+		return -1;
+	}
+
+	if (emblem->stringVar && strcmp(emblem->stringVar, ""))
+	{
+		// Get the skin from the string.
+		INT32 skinnum = R_SkinAvailable(emblem->stringVar);
+		if (skinnum != -1)
+		{
+			return skinnum;
+		}
+	}
+
+	if (emblem->var >= 0 && emblem->var < numskins)
+	{
+		// Use the number directly.
+		return emblem->var;
+	}
+
+	// Invalid skin emblem.
+	return -1;
+}
+
 // ----------------
 // Misc Emblem shit
 // ----------------
diff --git a/src/m_cond.h b/src/m_cond.h
index 9bb162ff317a34f40d69cc1ec37230e1d818af27..b2c6d65e6046b030a44721568ae429baece6909a 100644
--- a/src/m_cond.h
+++ b/src/m_cond.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2012-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 2012-2020 by Sonic Team Junior.
+// Copyright (C) 2012-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -92,6 +92,7 @@ typedef struct
 	UINT8 sprite;    ///< emblem sprite to use, 0 - 25
 	UINT16 color;    ///< skincolor to use
 	INT32 var;       ///< If needed, specifies information on the target amount to achieve (or target skin)
+	char *stringVar; ///< String version
 	char hint[110];  ///< Hint for emblem hints menu
 	UINT8 collected; ///< Do you have this emblem?
 } emblem_t;
@@ -116,6 +117,7 @@ typedef struct
 	UINT8 showconditionset;
 	INT16 type;
 	INT16 variable;
+	char *stringVar;
 	UINT8 nocecho;
 	UINT8 nochecklist;
 	UINT8 unlocked;
@@ -132,6 +134,7 @@ typedef struct
 #define SECRET_WARP			 2 // Selectable warp
 #define SECRET_SOUNDTEST	 3 // Sound Test
 #define SECRET_CREDITS		 4 // Enables Credits
+#define SECRET_SKIN			 5 // Unlocks a skin
 
 // If you have more secrets than these variables allow in your game,
 // you seriously need to get a life.
@@ -185,4 +188,7 @@ UINT8 M_GotHighEnoughScore(INT32 tscore);
 UINT8 M_GotLowEnoughTime(INT32 tictime);
 UINT8 M_GotHighEnoughRings(INT32 trings);
 
+INT32 M_UnlockableSkinNum(unlockable_t *unlock);
+INT32 M_EmblemSkinNum(emblem_t *emblem);
+
 #define M_Achieved(a) ((a) >= MAXCONDITIONSETS || conditionSets[a].achieved)
diff --git a/src/m_dllist.h b/src/m_dllist.h
index 680c2cd80085f0e7501e714e20c749e0fb371f39..65303b4a339fb81ec9f7a2c9eb70f2b8cd55a20a 100644
--- a/src/m_dllist.h
+++ b/src/m_dllist.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2005      by James Haley
-// Copyright (C) 2005-2020 by Sonic Team Junior.
+// Copyright (C) 2005-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_easing.c b/src/m_easing.c
new file mode 100644
index 0000000000000000000000000000000000000000..c871d3106e53c2e62216a8a731dab50cf3c6fb15
--- /dev/null
+++ b/src/m_easing.c
@@ -0,0 +1,430 @@
+// SONIC ROBO BLAST 2
+//-----------------------------------------------------------------------------
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
+//
+// This program is free software distributed under the
+// terms of the GNU General Public License, version 2.
+// See the 'LICENSE' file for more details.
+//-----------------------------------------------------------------------------
+/// \file  m_easing.c
+/// \brief Easing functions
+///        Referenced from https://easings.net/
+
+#include "m_easing.h"
+#include "tables.h"
+#include "doomdef.h"
+
+/*
+	For the computation of the logarithm, we choose, by trial and error, from among
+	a sequence of particular factors those, that when multiplied with the function
+	argument, normalize it to unity. For every factor chosen, we add up the
+	corresponding logarithm value stored in a table. The sum then corresponds to
+	the logarithm of the function argument.
+
+	For the integer portion, we would want to choose
+		2^i, i = 1, 2, 4, 8, ...
+	and for the factional part we choose
+		1+2^-i, i = 1, 2, 3, 4, 5 ...
+
+	The algorithm for the exponential is closely related and quite literally the inverse
+	of the logarithm algorithm. From among the sequence of tabulated logarithms for our
+	chosen factors, we pick those that when subtracted from the function argument ultimately
+	reduce it to zero. Starting with unity, we multiply with all the factors whose logarithms
+	we have subtracted in the process. The resulting product corresponds to the result of the exponentiation.
+
+	Logarithms of values greater than unity can be computed by applying the algorithm to the reciprocal
+	of the function argument (with the negation of the result as appropriate), likewise exponentiation with
+	negative function arguments requires us negate the function argument and compute the reciprocal at the end.
+*/
+
+static fixed_t logtabdec[FRACBITS] =
+{
+	0x95c1, 0x526a, 0x2b80, 0x1663,
+	0xb5d, 0x5b9, 0x2e0, 0x170,
+	0xb8, 0x5c, 0x2e, 0x17,
+	0x0b, 0x06, 0x03, 0x01
+};
+
+static fixed_t fixlog2(fixed_t a)
+{
+	UINT32 x = a, y = 0;
+	INT32 t, i, shift = 8;
+
+	if (x > FRACUNIT)
+		x = FixedDiv(FRACUNIT, x);
+
+	// Integer part
+	//   1<<19 = 0x80000
+	//   1<<18 = 0x40000
+	//   1<<17 = 0x20000
+	//   1<<16 = 0x10000
+
+#define dologtab(i) \
+	t = (x << shift); \
+	if (t < FRACUNIT) \
+	{ \
+		x = t; \
+		y += (1 << (19 - i)); \
+	} \
+	shift /= 2;
+
+	dologtab(0)
+	dologtab(1)
+	dologtab(2)
+	dologtab(3)
+
+#undef dologtab
+
+	// Decimal part
+	for (i = 0; i < FRACBITS; i++)
+	{
+		t = x + (x >> (i + 1));
+		if (t < FRACUNIT)
+		{
+			x = t;
+			y += logtabdec[i];
+		}
+	}
+
+	if (a <= FRACUNIT)
+		return -y;
+
+	return y;
+}
+
+// Notice how this is symmetric to fixlog2.
+static INT32 fixexp(fixed_t a)
+{
+	UINT32 x, y;
+	fixed_t t, i, shift = 8;
+
+	// Underflow prevention.
+	if (a <= -15 * FRACUNIT)
+		return 0;
+
+	x = (a < 0) ? (-a) : (a);
+	y = FRACUNIT;
+
+	// Integer part (see fixlog2)
+#define dologtab(i) \
+	t = x - (1 << (19 - i)); \
+	if (t >= 0) \
+	{ \
+		x = t; \
+		y <<= shift; \
+	} \
+	shift /= 2;
+
+	dologtab(0)
+	dologtab(1)
+	dologtab(2)
+	dologtab(3)
+
+#undef dologtab
+
+	// Decimal part
+	for (i = 0; i < FRACBITS; i++)
+	{
+		t = (x - logtabdec[i]);
+		if (t >= 0)
+		{
+			x = t;
+			y += (y >> (i + 1));
+		}
+	}
+
+	if (a < 0)
+		return FixedDiv(FRACUNIT, y);
+
+	return y;
+}
+
+#define fixpow(x, y) fixexp(FixedMul((y), fixlog2(x)))
+#define fixintmul(x, y) FixedMul((x) * FRACUNIT, y)
+#define fixintdiv(x, y) FixedDiv(x, (y) * FRACUNIT)
+#define fixinterp(start, end, t) FixedMul((FRACUNIT - (t)), start) + FixedMul(t, end)
+
+// ==================
+//  EASING FUNCTIONS
+// ==================
+
+#define EASINGFUNC(type) fixed_t Easing_ ## type (fixed_t t, fixed_t start, fixed_t end)
+
+//
+// Linear
+//
+
+EASINGFUNC(Linear)
+{
+	return fixinterp(start, end, t);
+}
+
+//
+// Sine
+//
+
+// This is equivalent to calculating (x * pi) and converting the result from radians into degrees.
+#define fixang(x) FixedMul((x), 180*FRACUNIT)
+
+EASINGFUNC(InSine)
+{
+	fixed_t c = fixang(t / 2);
+	fixed_t x = FRACUNIT - FINECOSINE(FixedAngle(c)>>ANGLETOFINESHIFT);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(OutSine)
+{
+	fixed_t c = fixang(t / 2);
+	fixed_t x = FINESINE(FixedAngle(c)>>ANGLETOFINESHIFT);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(InOutSine)
+{
+	fixed_t c = fixang(t);
+	fixed_t x = -(FINECOSINE(FixedAngle(c)>>ANGLETOFINESHIFT) - FRACUNIT) / 2;
+	return fixinterp(start, end, x);
+}
+
+#undef fixang
+
+//
+// Quad
+//
+
+EASINGFUNC(InQuad)
+{
+	return fixinterp(start, end, FixedMul(t, t));
+}
+
+EASINGFUNC(OutQuad)
+{
+	return fixinterp(start, end, FRACUNIT - FixedMul(FRACUNIT - t, FRACUNIT - t));
+}
+
+EASINGFUNC(InOutQuad)
+{
+	fixed_t x = t < (FRACUNIT/2)
+	? fixintmul(2, FixedMul(t, t))
+	: FRACUNIT - fixpow(FixedMul(-2*FRACUNIT, t) + 2*FRACUNIT, 2*FRACUNIT) / 2;
+	return fixinterp(start, end, x);
+}
+
+//
+// Cubic
+//
+
+EASINGFUNC(InCubic)
+{
+	fixed_t x = FixedMul(t, FixedMul(t, t));
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(OutCubic)
+{
+	return fixinterp(start, end, FRACUNIT - fixpow(FRACUNIT - t, 3*FRACUNIT));
+}
+
+EASINGFUNC(InOutCubic)
+{
+	fixed_t x = t < (FRACUNIT/2)
+	? fixintmul(4, FixedMul(t, FixedMul(t, t)))
+	: FRACUNIT - fixpow(fixintmul(-2, t) + 2*FRACUNIT, 3*FRACUNIT) / 2;
+	return fixinterp(start, end, x);
+}
+
+//
+// "Quart"
+//
+
+EASINGFUNC(InQuart)
+{
+	fixed_t x = FixedMul(FixedMul(t, t), FixedMul(t, t));
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(OutQuart)
+{
+	fixed_t x = FRACUNIT - fixpow(FRACUNIT - t, 4 * FRACUNIT);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(InOutQuart)
+{
+	fixed_t x = t < (FRACUNIT/2)
+	? fixintmul(8, FixedMul(FixedMul(t, t), FixedMul(t, t)))
+	: FRACUNIT - fixpow(fixintmul(-2, t) + 2*FRACUNIT, 4*FRACUNIT) / 2;
+	return fixinterp(start, end, x);
+}
+
+//
+// "Quint"
+//
+
+EASINGFUNC(InQuint)
+{
+	fixed_t x = FixedMul(t, FixedMul(FixedMul(t, t), FixedMul(t, t)));
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(OutQuint)
+{
+	fixed_t x = FRACUNIT - fixpow(FRACUNIT - t, 5 * FRACUNIT);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(InOutQuint)
+{
+	fixed_t x = t < (FRACUNIT/2)
+	? FixedMul(16*FRACUNIT, FixedMul(t, FixedMul(FixedMul(t, t), FixedMul(t, t))))
+	: FRACUNIT - fixpow(fixintmul(-2, t) + 2*FRACUNIT, 5*FRACUNIT) / 2;
+	return fixinterp(start, end, x);
+}
+
+//
+// Exponential
+//
+
+EASINGFUNC(InExpo)
+{
+	fixed_t x = (!t) ? 0 : fixpow(2*FRACUNIT, fixintmul(10, t) - 10*FRACUNIT);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(OutExpo)
+{
+	fixed_t x = (t >= FRACUNIT) ? FRACUNIT
+	: FRACUNIT - fixpow(2*FRACUNIT, fixintmul(-10, t));
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(InOutExpo)
+{
+	fixed_t x;
+
+	if (!t)
+		x = 0;
+	else if (t >= FRACUNIT)
+		x = FRACUNIT;
+	else
+	{
+		if (t < FRACUNIT / 2)
+		{
+			x = fixpow(2*FRACUNIT, fixintmul(20, t) - 10*FRACUNIT);
+			x = fixintdiv(x, 2);
+		}
+		else
+		{
+			x = fixpow(2*FRACUNIT, fixintmul(-20, t) + 10*FRACUNIT);
+			x = fixintdiv((2*FRACUNIT) - x, 2);
+		}
+	}
+
+	return fixinterp(start, end, x);
+}
+
+//
+// "Back"
+//
+
+#define EASEBACKCONST1 111514 // 1.70158
+#define EASEBACKCONST2 99942 // 1.525
+
+static fixed_t EaseInBack(fixed_t t, fixed_t start, fixed_t end, fixed_t c1)
+{
+	const fixed_t c3 = c1 + FRACUNIT;
+	fixed_t x = FixedMul(FixedMul(t, t), FixedMul(c3, t) - c1);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(InBack)
+{
+	return EaseInBack(t, start, end, EASEBACKCONST1);
+}
+
+static fixed_t EaseOutBack(fixed_t t, fixed_t start, fixed_t end, fixed_t c1)
+{
+	const fixed_t c3 = c1 + FRACUNIT;
+	fixed_t x;
+	t -= FRACUNIT;
+	x = FRACUNIT + FixedMul(FixedMul(t, t), FixedMul(c3, t) + c1);
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(OutBack)
+{
+	return EaseOutBack(t, start, end, EASEBACKCONST1);
+}
+
+static fixed_t EaseInOutBack(fixed_t t, fixed_t start, fixed_t end, fixed_t c2)
+{
+	fixed_t x, y;
+	const fixed_t f2 = 2*FRACUNIT;
+
+	if (t < FRACUNIT / 2)
+	{
+		x = fixpow(FixedMul(t, f2), f2);
+		y = FixedMul(c2 + FRACUNIT, FixedMul(t, f2));
+		x = FixedMul(x, y - c2);
+	}
+	else
+	{
+		x = fixpow(-(FixedMul(t, f2) - f2), f2);
+		y = FixedMul(c2 + FRACUNIT, FixedMul(t, f2) - f2);
+		x = FixedMul(x, y + c2);
+		x += f2;
+	}
+
+	x /= 2;
+
+	return fixinterp(start, end, x);
+}
+
+EASINGFUNC(InOutBack)
+{
+	return EaseInOutBack(t, start, end, EASEBACKCONST2);
+}
+
+#undef EASINGFUNC
+#define EASINGFUNC(type) fixed_t Easing_ ## type (fixed_t t, fixed_t start, fixed_t end, fixed_t param)
+
+EASINGFUNC(InBackParameterized)
+{
+	return EaseInBack(t, start, end, param);
+}
+
+EASINGFUNC(OutBackParameterized)
+{
+	return EaseOutBack(t, start, end, param);
+}
+
+EASINGFUNC(InOutBackParameterized)
+{
+	return EaseInOutBack(t, start, end, param);
+}
+
+#undef EASINGFUNC
+
+// Function list
+
+#define EASINGFUNC(type) Easing_ ## type
+#define COMMA ,
+
+easingfunc_t easing_funclist[EASE_MAX] =
+{
+	EASINGFUNCLIST(COMMA)
+};
+
+// Function names
+
+#undef EASINGFUNC
+#define EASINGFUNC(type) #type
+
+const char *easing_funcnames[EASE_MAX] =
+{
+	EASINGFUNCLIST(COMMA)
+};
+
+#undef COMMA
+#undef EASINGFUNC
diff --git a/src/m_easing.h b/src/m_easing.h
new file mode 100644
index 0000000000000000000000000000000000000000..435ad35e7a0b6b2302ce5256713155bf18c4258f
--- /dev/null
+++ b/src/m_easing.h
@@ -0,0 +1,101 @@
+// SONIC ROBO BLAST 2
+//-----------------------------------------------------------------------------
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
+//
+// This program is free software distributed under the
+// terms of the GNU General Public License, version 2.
+// See the 'LICENSE' file for more details.
+//-----------------------------------------------------------------------------
+/// \file  m_easing.h
+/// \brief Easing functions
+
+#ifndef __M_EASING_H__
+#define __M_EASING_H__
+
+#include "doomtype.h"
+#include "m_fixed.h"
+
+typedef enum
+{
+	EASE_LINEAR = 0,
+
+	EASE_INSINE,
+	EASE_OUTSINE,
+	EASE_INOUTSINE,
+
+	EASE_INQUAD,
+	EASE_OUTQUAD,
+	EASE_INOUTQUAD,
+
+	EASE_INCUBIC,
+	EASE_OUTCUBIC,
+	EASE_INOUTCUBIC,
+
+	EASE_INQUART,
+	EASE_OUTQUART,
+	EASE_INOUTQUART,
+
+	EASE_INQUINT,
+	EASE_OUTQUINT,
+	EASE_INOUTQUINT,
+
+	EASE_INEXPO,
+	EASE_OUTEXPO,
+	EASE_INOUTEXPO,
+
+	EASE_INBACK,
+	EASE_OUTBACK,
+	EASE_INOUTBACK,
+
+	EASE_MAX,
+} easing_t;
+
+typedef fixed_t (*easingfunc_t)(fixed_t, fixed_t, fixed_t);
+
+extern easingfunc_t easing_funclist[EASE_MAX];
+extern const char *easing_funcnames[EASE_MAX];
+
+#define EASINGFUNCLIST(sep) \
+	EASINGFUNC(Linear) sep /* Easing_Linear */ \
+ \
+	EASINGFUNC(InSine) sep /* Easing_InSine */ \
+	EASINGFUNC(OutSine) sep /* Easing_OutSine */ \
+	EASINGFUNC(InOutSine) sep /* Easing_InOutSine */ \
+ \
+	EASINGFUNC(InQuad) sep /* Easing_InQuad */ \
+	EASINGFUNC(OutQuad) sep /* Easing_OutQuad */ \
+	EASINGFUNC(InOutQuad) sep /* Easing_InOutQuad */ \
+ \
+	EASINGFUNC(InCubic) sep /* Easing_InCubic */ \
+	EASINGFUNC(OutCubic) sep /* Easing_OutCubic */ \
+	EASINGFUNC(InOutCubic) sep /* Easing_InOutCubic */ \
+ \
+	EASINGFUNC(InQuart) sep /* Easing_InQuart */ \
+	EASINGFUNC(OutQuart) sep /* Easing_OutQuart */ \
+	EASINGFUNC(InOutQuart) sep /* Easing_InOutQuart */ \
+ \
+	EASINGFUNC(InQuint) sep /* Easing_InQuint */ \
+	EASINGFUNC(OutQuint) sep /* Easing_OutQuint */ \
+	EASINGFUNC(InOutQuint) sep /* Easing_InOutQuint */ \
+ \
+	EASINGFUNC(InExpo) sep /* Easing_InExpo */ \
+	EASINGFUNC(OutExpo) sep /* Easing_OutExpo */ \
+	EASINGFUNC(InOutExpo) sep /* Easing_InOutExpo */ \
+ \
+	EASINGFUNC(InBack) sep /* Easing_InBack */ \
+	EASINGFUNC(OutBack) sep /* Easing_OutBack */ \
+	EASINGFUNC(InOutBack) sep /* Easing_InOutBack */
+
+#define EASINGFUNC(type) fixed_t Easing_ ## type (fixed_t t, fixed_t start, fixed_t end);
+
+EASINGFUNCLIST()
+
+#undef EASINGFUNC
+#define EASINGFUNC(type) fixed_t Easing_ ## type (fixed_t t, fixed_t start, fixed_t end, fixed_t param);
+
+EASINGFUNC(InBackParameterized) /* Easing_InBackParameterized */
+EASINGFUNC(OutBackParameterized) /* Easing_OutBackParameterized */
+EASINGFUNC(InOutBackParameterized) /* Easing_InOutBackParameterized */
+
+#undef EASINGFUNC
+#endif
diff --git a/src/m_fixed.c b/src/m_fixed.c
index eb10fd5f801825dc82462d67de67110b65edf285..d40ccd98e35604a706dd7fa39f16234e1eb28f5a 100644
--- a/src/m_fixed.c
+++ b/src/m_fixed.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_fixed.h b/src/m_fixed.h
index 289ca442a03e7740a7e1844303a8d84c97f9aa22..1cf2f00d1e482d8fae5c77ea48a47b6940826297 100644
--- a/src/m_fixed.h
+++ b/src/m_fixed.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -71,7 +71,7 @@ FUNCMATH FUNCINLINE static ATTRINLINE fixed_t FloatToFixed(float f)
 		value   [eax]       \
 		modify exact [eax edx]
 #elif defined (__GNUC__) && defined (__i386__) && !defined (NOASM)
-	// DJGPP, i386 linux, cygwin or mingw
+	// i386 linux, cygwin or mingw
 	FUNCMATH FUNCINLINE static inline fixed_t FixedMul(fixed_t a, fixed_t b) // asm
 	{
 		fixed_t ret;
diff --git a/src/m_menu.c b/src/m_menu.c
index 73f6d9685e9a548ede9733af4bf2e1db52ef14b7..4ebd9f95e84af1497aeacdb11141845eeb9c0448 100644
--- a/src/m_menu.c
+++ b/src/m_menu.c
@@ -3,7 +3,7 @@
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 2011-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -62,6 +62,8 @@
 
 #include "i_joy.h" // for joystick menu controls
 
+#include "p_saveg.h" // Only for NEWSKINSAVES
+
 // Condition Sets
 #include "m_cond.h"
 
@@ -1322,7 +1324,7 @@ static menuitem_t OP_Camera2ExtendedOptionsMenu[] =
 enum
 {
 	op_video_resolution = 1,
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	op_video_fullscreen,
 #endif
 	op_video_vsync,
@@ -1334,7 +1336,7 @@ static menuitem_t OP_VideoOptionsMenu[] =
 	{IT_HEADER, NULL, "Screen", NULL, 0},
 	{IT_STRING | IT_CALL,  NULL, "Set Resolution...",       M_VideoModeMenu,          6},
 
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	{IT_STRING|IT_CVAR,      NULL, "Fullscreen",             &cv_fullscreen,         11},
 #endif
 	{IT_STRING | IT_CVAR, NULL, "Vertical Sync",                &cv_vidwait,         16},
@@ -1453,7 +1455,7 @@ static menuitem_t OP_OpenGLOptionsMenu[] =
 #ifdef ALAM_LIGHTING
 	{IT_SUBMENU|IT_STRING,      NULL, "Lighting...",         &OP_OpenGLLightingDef,   144},
 #endif
-#if defined (_WINDOWS) && (!((defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)))
+#if defined (_WINDOWS) && (!(defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)))
 	{IT_STRING|IT_CVAR,         NULL, "Fullscreen",          &cv_fullscreen,          154},
 #endif
 };
@@ -1612,53 +1614,54 @@ static menuitem_t OP_ServerOptionsMenu[] =
 	{IT_STRING | IT_CVAR,    NULL, "Max Players",                      &cv_maxplayers,          21},
 	{IT_STRING | IT_CVAR,    NULL, "Allow Add-on Downloading",         &cv_downloading,         26},
 	{IT_STRING | IT_CVAR,    NULL, "Allow players to join",            &cv_allownewplayer,      31},
+	{IT_STRING | IT_CVAR,    NULL, "Minutes for reconnecting",         &cv_rejointimeout,       36},
 #endif
-	{IT_STRING | IT_CVAR,    NULL, "Map progression",                  &cv_advancemap,          36},
-	{IT_STRING | IT_CVAR,    NULL, "Intermission Timer",               &cv_inttime,             41},
+	{IT_STRING | IT_CVAR,    NULL, "Map progression",                  &cv_advancemap,          41},
+	{IT_STRING | IT_CVAR,    NULL, "Intermission Timer",               &cv_inttime,             46},
 
-	{IT_HEADER, NULL, "Characters", NULL, 50},
-	{IT_STRING | IT_CVAR,    NULL, "Force a character",                &cv_forceskin,           56},
-	{IT_STRING | IT_CVAR,    NULL, "Restrict character changes",       &cv_restrictskinchange,  61},
+	{IT_HEADER, NULL, "Characters", NULL, 55},
+	{IT_STRING | IT_CVAR,    NULL, "Force a character",                &cv_forceskin,           61},
+	{IT_STRING | IT_CVAR,    NULL, "Restrict character changes",       &cv_restrictskinchange,  66},
 
-	{IT_HEADER, NULL, "Items", NULL, 70},
-	{IT_STRING | IT_CVAR,    NULL, "Item respawn delay",               &cv_itemrespawntime,     76},
-	{IT_STRING | IT_SUBMENU, NULL, "Mystery Item Monitor Toggles...",  &OP_MonitorToggleDef,    81},
+	{IT_HEADER, NULL, "Items", NULL, 75},
+	{IT_STRING | IT_CVAR,    NULL, "Item respawn delay",               &cv_itemrespawntime,     81},
+	{IT_STRING | IT_SUBMENU, NULL, "Mystery Item Monitor Toggles...",  &OP_MonitorToggleDef,    86},
 
-	{IT_HEADER, NULL, "Cooperative", NULL, 90},
-	{IT_STRING | IT_CVAR,    NULL, "Players required for exit",        &cv_playersforexit,      96},
-	{IT_STRING | IT_CVAR,    NULL, "Starposts",                        &cv_coopstarposts,      101},
-	{IT_STRING | IT_CVAR,    NULL, "Life sharing",                     &cv_cooplives,          106},
-	{IT_STRING | IT_CVAR,    NULL, "Post-goal free roaming",           &cv_exitmove,           111},
+	{IT_HEADER, NULL, "Cooperative", NULL, 95},
+	{IT_STRING | IT_CVAR,    NULL, "Players required for exit",        &cv_playersforexit,     101},
+	{IT_STRING | IT_CVAR,    NULL, "Starposts",                        &cv_coopstarposts,      106},
+	{IT_STRING | IT_CVAR,    NULL, "Life sharing",                     &cv_cooplives,          111},
+	{IT_STRING | IT_CVAR,    NULL, "Post-goal free roaming",           &cv_exitmove,           116},
 
-	{IT_HEADER, NULL, "Race, Competition", NULL, 120},
-	{IT_STRING | IT_CVAR,    NULL, "Level completion countdown",       &cv_countdowntime,      126},
-	{IT_STRING | IT_CVAR,    NULL, "Item Monitors",                    &cv_competitionboxes,   131},
+	{IT_HEADER, NULL, "Race, Competition", NULL, 125},
+	{IT_STRING | IT_CVAR,    NULL, "Level completion countdown",       &cv_countdowntime,      131},
+	{IT_STRING | IT_CVAR,    NULL, "Item Monitors",                    &cv_competitionboxes,   136},
 
-	{IT_HEADER, NULL, "Ringslinger (Match, CTF, Tag, H&S)", NULL, 140},
-	{IT_STRING | IT_CVAR,    NULL, "Time Limit",                       &cv_timelimit,          146},
-	{IT_STRING | IT_CVAR,    NULL, "Score Limit",                      &cv_pointlimit,         151},
-	{IT_STRING | IT_CVAR,    NULL, "Overtime on Tie",                  &cv_overtime,           156},
-	{IT_STRING | IT_CVAR,    NULL, "Player respawn delay",             &cv_respawntime,        161},
+	{IT_HEADER, NULL, "Ringslinger (Match, CTF, Tag, H&S)", NULL, 145},
+	{IT_STRING | IT_CVAR,    NULL, "Time Limit",                       &cv_timelimit,          151},
+	{IT_STRING | IT_CVAR,    NULL, "Score Limit",                      &cv_pointlimit,         156},
+	{IT_STRING | IT_CVAR,    NULL, "Overtime on Tie",                  &cv_overtime,           161},
+	{IT_STRING | IT_CVAR,    NULL, "Player respawn delay",             &cv_respawntime,        166},
 
-	{IT_STRING | IT_CVAR,    NULL, "Item Monitors",                    &cv_matchboxes,         171},
-	{IT_STRING | IT_CVAR,    NULL, "Weapon Rings",                     &cv_specialrings,       176},
-	{IT_STRING | IT_CVAR,    NULL, "Power Stones",                     &cv_powerstones,        181},
+	{IT_STRING | IT_CVAR,    NULL, "Item Monitors",                    &cv_matchboxes,         176},
+	{IT_STRING | IT_CVAR,    NULL, "Weapon Rings",                     &cv_specialrings,       181},
+	{IT_STRING | IT_CVAR,    NULL, "Power Stones",                     &cv_powerstones,        186},
 
-	{IT_STRING | IT_CVAR,    NULL, "Flag respawn delay",               &cv_flagtime,           191},
-	{IT_STRING | IT_CVAR,    NULL, "Hiding time",                      &cv_hidetime,           196},
+	{IT_STRING | IT_CVAR,    NULL, "Flag respawn delay",               &cv_flagtime,           196},
+	{IT_STRING | IT_CVAR,    NULL, "Hiding time",                      &cv_hidetime,           201},
 
-	{IT_HEADER, NULL, "Teams", NULL, 205},
-	{IT_STRING | IT_CVAR,    NULL, "Autobalance sizes",                &cv_autobalance,        211},
-	{IT_STRING | IT_CVAR,    NULL, "Scramble on Map Change",           &cv_scrambleonchange,   216},
+	{IT_HEADER, NULL, "Teams", NULL, 210},
+	{IT_STRING | IT_CVAR,    NULL, "Autobalance sizes",                &cv_autobalance,        216},
+	{IT_STRING | IT_CVAR,    NULL, "Scramble on Map Change",           &cv_scrambleonchange,   221},
 
 #ifndef NONET
-	{IT_HEADER, NULL, "Advanced", NULL, 225},
-	{IT_STRING | IT_CVAR | IT_CV_STRING, NULL, "Master server",        &cv_masterserver,       231},
+	{IT_HEADER, NULL, "Advanced", NULL, 230},
+	{IT_STRING | IT_CVAR | IT_CV_STRING, NULL, "Master server",        &cv_masterserver,       236},
 
-	{IT_STRING | IT_CVAR,    NULL, "Join delay",                       &cv_joindelay,          246},
-	{IT_STRING | IT_CVAR,    NULL, "Attempts to resynchronise",        &cv_resynchattempts,    251},
+	{IT_STRING | IT_CVAR,    NULL, "Join delay",                       &cv_joindelay,          251},
+	{IT_STRING | IT_CVAR,    NULL, "Attempts to resynchronise",        &cv_resynchattempts,    256},
 
-	{IT_STRING | IT_CVAR,    NULL, "Show IP Address of Joiners",       &cv_showjoinaddress,    256},
+	{IT_STRING | IT_CVAR,    NULL, "Show IP Address of Joiners",       &cv_showjoinaddress,    261},
 #endif
 };
 
@@ -5165,34 +5168,75 @@ static boolean M_GametypeHasLevels(INT32 gt)
 
 static INT32 M_CountRowsToShowOnPlatter(INT32 gt)
 {
-	INT32 mapnum = 0, prevmapnum = 0, col = 0, rows = 0;
+	INT32 col = 0, rows = 0;
+	INT32 mapIterate = 0;
+	INT32 headingIterate = 0;
+	boolean mapAddedAlready[NUMMAPS];
 
-	while (mapnum < NUMMAPS)
+	memset(mapAddedAlready, 0, sizeof mapAddedAlready);
+
+	for (mapIterate = 0; mapIterate < NUMMAPS; mapIterate++)
 	{
-		if (M_CanShowLevelOnPlatter(mapnum, gt))
+		boolean forceNewRow = true;
+
+		if (mapAddedAlready[mapIterate] == true)
 		{
-			if (rows == 0)
+			// Already added under another heading
+			continue;
+		}
+
+		if (M_CanShowLevelOnPlatter(mapIterate, gt) == false)
+		{
+			// Don't show this one
+			continue;
+		}
+
+		for (headingIterate = mapIterate; headingIterate < NUMMAPS; headingIterate++)
+		{
+			boolean wide = false;
+
+			if (mapAddedAlready[headingIterate] == true)
+			{
+				// Already added under another heading
+				continue;
+			}
+
+			if (M_CanShowLevelOnPlatter(headingIterate, gt) == false)
+			{
+				// Don't show this one
+				continue;
+			}
+
+			if (!fastcmp(mapheaderinfo[mapIterate]->selectheading, mapheaderinfo[headingIterate]->selectheading))
+			{
+				// Headers don't match
+				continue;
+			}
+
+			wide = (mapheaderinfo[headingIterate]->menuflags & LF2_WIDEICON);
+
+			// preparing next position to drop mapnum into
+			if (col == 2 // no more space on the row?
+				|| wide || forceNewRow)
+			{
+				col = 0;
 				rows++;
+			}
 			else
 			{
-				if (col == 2
-				|| (mapheaderinfo[prevmapnum]->menuflags & LF2_WIDEICON)
-				|| (mapheaderinfo[mapnum]->menuflags & LF2_WIDEICON)
-				|| !(fastcmp(mapheaderinfo[mapnum]->selectheading, mapheaderinfo[prevmapnum]->selectheading)))
-				{
-					col = 0;
-					rows++;
-				}
-				else
-					col++;
+				col++;
 			}
-			prevmapnum = mapnum;
+
+			// Done adding this one
+			mapAddedAlready[headingIterate] = true;
+			forceNewRow = wide;
 		}
-		mapnum++;
 	}
 
 	if (levellistmode == LLM_CREATESERVER)
+	{
 		rows++;
+	}
 
 	return rows;
 }
@@ -5222,7 +5266,10 @@ static void M_CacheLevelPlatter(void)
 static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 {
 	INT32 numrows = M_CountRowsToShowOnPlatter(gt);
-	INT32 mapnum = 0, prevmapnum = 0, col = 0, row = 0, startrow = 0;
+	INT32 col = 0, row = 0, startrow = 0;
+	INT32 mapIterate = 0; // First level of map loop -- find starting points for select headings
+	INT32 headingIterate = 0; // Second level of map loop -- finding maps that match mapIterate's heading.
+	boolean mapAddedAlready[NUMMAPS];
 
 	if (!numrows)
 		return false;
@@ -5239,6 +5286,8 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 	// done here so lsrow and lscol can be set if cv_nextmap is on the platter
 	lsrow = lscol = lshli = lsoffs[0] = lsoffs[1] = 0;
 
+	memset(mapAddedAlready, 0, sizeof mapAddedAlready);
+
 	if (levellistmode == LLM_CREATESERVER)
 	{
 		sprintf(levelselect.rows[0].header, "Gametype");
@@ -5250,31 +5299,75 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 		char_notes = NULL;
 	}
 
-	while (mapnum < NUMMAPS)
+	for (mapIterate = 0; mapIterate < NUMMAPS; mapIterate++)
 	{
-		if (M_CanShowLevelOnPlatter(mapnum, gt))
+		INT32 headerRow = -1;
+		boolean anyAvailable = false;
+		boolean forceNewRow = true;
+
+		if (mapAddedAlready[mapIterate] == true)
 		{
-			const UINT8 actnum = mapheaderinfo[mapnum]->actnum;
-			const boolean headingisname = (fastcmp(mapheaderinfo[mapnum]->selectheading, mapheaderinfo[mapnum]->lvlttl));
-			const boolean wide = (mapheaderinfo[mapnum]->menuflags & LF2_WIDEICON);
+			// Already added under another heading
+			continue;
+		}
+
+		if (M_CanShowLevelOnPlatter(mapIterate, gt) == false)
+		{
+			// Don't show this one
+			continue;
+		}
+
+		for (headingIterate = mapIterate; headingIterate < NUMMAPS; headingIterate++)
+		{
+			UINT8 actnum = 0;
+			boolean headingisname = false;
+			boolean wide = false;
+
+			if (mapAddedAlready[headingIterate] == true)
+			{
+				// Already added under another heading
+				continue;
+			}
+
+			if (M_CanShowLevelOnPlatter(headingIterate, gt) == false)
+			{
+				// Don't show this one
+				continue;
+			}
+
+			if (!fastcmp(mapheaderinfo[mapIterate]->selectheading, mapheaderinfo[headingIterate]->selectheading))
+			{
+				// Headers don't match
+				continue;
+			}
+
+			actnum = mapheaderinfo[headingIterate]->actnum;
+			headingisname = (fastcmp(mapheaderinfo[headingIterate]->selectheading, mapheaderinfo[headingIterate]->lvlttl));
+			wide = (mapheaderinfo[headingIterate]->menuflags & LF2_WIDEICON);
 
 			// preparing next position to drop mapnum into
 			if (levelselect.rows[startrow].maplist[0])
 			{
 				if (col == 2 // no more space on the row?
-				|| wide
-				|| (mapheaderinfo[prevmapnum]->menuflags & LF2_WIDEICON)
-				|| !(fastcmp(mapheaderinfo[mapnum]->selectheading, mapheaderinfo[prevmapnum]->selectheading))) // a new heading is starting?
+					|| wide || forceNewRow)
 				{
 					col = 0;
 					row++;
 				}
 				else
+				{
 					col++;
+				}
 			}
 
-			levelselect.rows[row].maplist[col] = mapnum+1; // putting the map on the platter
-			levelselect.rows[row].mapavailable[col] = M_LevelAvailableOnPlatter(mapnum);
+			if (headerRow == -1)
+			{
+				// Set where the header row is meant to be
+				headerRow = row;
+			}
+
+			levelselect.rows[row].maplist[col] = headingIterate+1; // putting the map on the platter
+			levelselect.rows[row].mapavailable[col] = M_LevelAvailableOnPlatter(headingIterate);
 
 			if ((lswide(row) = wide)) // intentionally assignment
 			{
@@ -5282,7 +5375,7 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 				levelselect.rows[row].mapavailable[2] = levelselect.rows[row].mapavailable[1] = levelselect.rows[row].mapavailable[0];
 			}
 
-			if (nextmappick && cv_nextmap.value == mapnum+1) // A little quality of life improvement.
+			if (nextmappick && cv_nextmap.value == headingIterate+1) // A little quality of life improvement.
 			{
 				lsrow = row;
 				lscol = col;
@@ -5291,6 +5384,8 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 			// individual map name
 			if (levelselect.rows[row].mapavailable[col])
 			{
+				anyAvailable = true;
+
 				if (headingisname)
 				{
 					if (actnum)
@@ -5301,7 +5396,7 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 				else if (wide)
 				{
 					// Yes, with LF2_WIDEICON it'll continue on over into the next 17+1 char block. That's alright; col is always zero, the string is contiguous, and the maximum length is lvlttl[22] + ' ' + ZONE + ' ' + INT32, which is about 39 or so - barely crossing into the third column.
-					char* mapname = G_BuildMapTitle(mapnum+1);
+					char* mapname = G_BuildMapTitle(headingIterate+1);
 					strcpy(levelselect.rows[row].mapnames[col], (const char *)mapname);
 					Z_Free(mapname);
 				}
@@ -5310,9 +5405,9 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 					char mapname[22+1+11]; // lvlttl[22] + ' ' + INT32
 
 					if (actnum)
-						sprintf(mapname, "%s %d", mapheaderinfo[mapnum]->lvlttl, actnum);
+						sprintf(mapname, "%s %d", mapheaderinfo[headingIterate]->lvlttl, actnum);
 					else
-						strcpy(mapname, mapheaderinfo[mapnum]->lvlttl);
+						strcpy(mapname, mapheaderinfo[headingIterate]->lvlttl);
 
 					if (strlen(mapname) >= 17)
 						strcpy(mapname+17-3, "...");
@@ -5321,27 +5416,36 @@ static boolean M_PrepareLevelPlatter(INT32 gt, boolean nextmappick)
 				}
 			}
 			else
-				sprintf(levelselect.rows[row].mapnames[col], "???");
-
-			// creating header text
-			if (!col && ((row == startrow) || !(fastcmp(mapheaderinfo[mapnum]->selectheading, mapheaderinfo[levelselect.rows[row-1].maplist[0]-1]->selectheading))))
 			{
-				if (!levelselect.rows[row].mapavailable[col])
-					sprintf(levelselect.rows[row].header, "???");
-				else
-				{
-					sprintf(levelselect.rows[row].header, "%s", mapheaderinfo[mapnum]->selectheading);
-					if (!(mapheaderinfo[mapnum]->levelflags & LF_NOZONE) && headingisname)
-					{
-						sprintf(levelselect.rows[row].header + strlen(levelselect.rows[row].header), " ZONE");
-					}
-				}
+				sprintf(levelselect.rows[row].mapnames[col], "???");
 			}
 
-			prevmapnum = mapnum;
+			// Done adding this one
+			mapAddedAlready[headingIterate] = true;
+			forceNewRow = wide;
 		}
 
-		mapnum++;
+		if (headerRow == -1)
+		{
+			// Shouldn't happen
+			continue;
+		}
+
+		// creating header text
+		if (anyAvailable == false)
+		{
+			sprintf(levelselect.rows[headerRow].header, "???");
+		}
+		else
+		{
+			sprintf(levelselect.rows[headerRow].header, "%s", mapheaderinfo[mapIterate]->selectheading);
+
+			if (!(mapheaderinfo[mapIterate]->levelflags & LF_NOZONE)
+				&& fastcmp(mapheaderinfo[mapIterate]->selectheading, mapheaderinfo[mapIterate]->lvlttl))
+			{
+				sprintf(levelselect.rows[headerRow].header + strlen(levelselect.rows[headerRow].header), " ZONE");
+			}
+		}
 	}
 
 #ifdef SYMMETRICAL_PLATTER
@@ -6233,8 +6337,8 @@ static void M_AddonsOptions(INT32 choice)
 	M_SetupNextMenu(&OP_AddonsOptionsDef);
 }
 
-#define LOCATIONSTRING1 "Visit \x83SRB2.ORG/MODS\x80 to get & make add-ons!"
-//#define LOCATIONSTRING2 "Visit \x88SRB2.ORG/MODS\x80 to get & make add-ons!"
+#define LOCATIONSTRING1 "Visit \x83SRB2.ORG/ADDONS\x80 to get & make addons!"
+//#define LOCATIONSTRING2 "Visit \x88SRB2.ORG/ADDONS\x80 to get & make addons!"
 
 static void M_LoadAddonsPatches(void)
 {
@@ -8579,7 +8683,7 @@ static void M_LoadSelect(INT32 choice)
 
 #define VERSIONSIZE 16
 #define BADSAVE { savegameinfo[slot].lives = -666; Z_Free(savebuffer); return; }
-#define CHECKPOS if (save_p >= end_p) BADSAVE
+#define CHECKPOS if (sav_p >= end_p) BADSAVE
 // Reads the save file to list lives, level, player, etc.
 // Tails 05-29-2003
 static void M_ReadSavegameInfo(UINT32 slot)
@@ -8588,10 +8692,13 @@ static void M_ReadSavegameInfo(UINT32 slot)
 	char savename[255];
 	UINT8 *savebuffer;
 	UINT8 *end_p; // buffer end point, don't read past here
-	UINT8 *save_p;
+	UINT8 *sav_p;
 	INT32 fake; // Dummy variable
 	char temp[sizeof(timeattackfolder)];
 	char vcheck[VERSIONSIZE];
+#ifdef NEWSKINSAVES
+	INT16 backwardsCompat = 0;
+#endif
 
 	sprintf(savename, savegamename, slot);
 
@@ -8607,19 +8714,19 @@ static void M_ReadSavegameInfo(UINT32 slot)
 	end_p = savebuffer + length;
 
 	// skip the description field
-	save_p = savebuffer;
+	sav_p = savebuffer;
 
 	// Version check
 	memset(vcheck, 0, sizeof (vcheck));
 	sprintf(vcheck, "version %d", VERSION);
-	if (strcmp((const char *)save_p, (const char *)vcheck)) BADSAVE
-	save_p += VERSIONSIZE;
+	if (strcmp((const char *)sav_p, (const char *)vcheck)) BADSAVE
+	sav_p += VERSIONSIZE;
 
 	// dearchive all the modifications
 	// P_UnArchiveMisc()
 
 	CHECKPOS
-	fake = READINT16(save_p);
+	fake = READINT16(sav_p);
 
 	if (((fake-1) & 8191) >= NUMMAPS) BADSAVE
 
@@ -8636,54 +8743,84 @@ static void M_ReadSavegameInfo(UINT32 slot)
 	savegameinfo[slot].gamemap = fake;
 
 	CHECKPOS
-	savegameinfo[slot].numemeralds = READUINT16(save_p)-357; // emeralds
+	savegameinfo[slot].numemeralds = READUINT16(sav_p)-357; // emeralds
 
 	CHECKPOS
-	READSTRINGN(save_p, temp, sizeof(temp)); // mod it belongs to
+	READSTRINGN(sav_p, temp, sizeof(temp)); // mod it belongs to
 
 	if (strcmp(temp, timeattackfolder)) BADSAVE
 
 	// P_UnArchivePlayer()
+#ifdef NEWSKINSAVES
 	CHECKPOS
-	fake = READUINT16(save_p);
-	savegameinfo[slot].skinnum = fake & ((1<<5) - 1);
-	if (savegameinfo[slot].skinnum >= numskins
-	|| !R_SkinUsable(-1, savegameinfo[slot].skinnum))
-		BADSAVE
-	savegameinfo[slot].botskin = fake >> 5;
-	if (savegameinfo[slot].botskin-1 >= numskins
-	|| !R_SkinUsable(-1, savegameinfo[slot].botskin-1))
-		BADSAVE
+	backwardsCompat = READUINT16(sav_p);
+
+	if (backwardsCompat != NEWSKINSAVES)
+	{
+		// Backwards compat
+		savegameinfo[slot].skinnum = backwardsCompat & ((1<<5) - 1);
+
+		if (savegameinfo[slot].skinnum >= numskins
+		|| !R_SkinUsable(-1, savegameinfo[slot].skinnum))
+			BADSAVE
+
+		savegameinfo[slot].botskin = backwardsCompat >> 5;
+		if (savegameinfo[slot].botskin-1 >= numskins
+		|| !R_SkinUsable(-1, savegameinfo[slot].botskin-1))
+			BADSAVE
+	}
+	else
+#endif
+	{
+		char ourSkinName[SKINNAMESIZE+1];
+		char botSkinName[SKINNAMESIZE+1];
+
+		CHECKPOS
+		READSTRINGN(sav_p, ourSkinName, SKINNAMESIZE);
+		savegameinfo[slot].skinnum = R_SkinAvailable(ourSkinName);
+
+		if (savegameinfo[slot].skinnum >= numskins
+		|| !R_SkinUsable(-1, savegameinfo[slot].skinnum))
+			BADSAVE
+
+		CHECKPOS
+		READSTRINGN(sav_p, botSkinName, SKINNAMESIZE);
+		savegameinfo[slot].botskin = (R_SkinAvailable(botSkinName) + 1);
+
+		if (savegameinfo[slot].botskin-1 >= numskins
+		|| !R_SkinUsable(-1, savegameinfo[slot].botskin-1))
+			BADSAVE
+	}
 
 	CHECKPOS
-	savegameinfo[slot].numgameovers = READUINT8(save_p); // numgameovers
+	savegameinfo[slot].numgameovers = READUINT8(sav_p); // numgameovers
 	CHECKPOS
-	savegameinfo[slot].lives = READSINT8(save_p); // lives
+	savegameinfo[slot].lives = READSINT8(sav_p); // lives
 	CHECKPOS
-	savegameinfo[slot].continuescore = READINT32(save_p); // score
+	savegameinfo[slot].continuescore = READINT32(sav_p); // score
 	CHECKPOS
-	fake = READINT32(save_p); // continues
+	fake = READINT32(sav_p); // continues
 	if (useContinues)
 		savegameinfo[slot].continuescore = fake;
 
 	// File end marker check
 	CHECKPOS
-	switch (READUINT8(save_p))
+	switch (READUINT8(sav_p))
 	{
 		case 0xb7:
 			{
 				UINT8 i, banksinuse;
 				CHECKPOS
-				banksinuse = READUINT8(save_p);
+				banksinuse = READUINT8(sav_p);
 				CHECKPOS
 				if (banksinuse > NUM_LUABANKS)
 					BADSAVE
 				for (i = 0; i < banksinuse; i++)
 				{
-					(void)READINT32(save_p);
+					(void)READINT32(sav_p);
 					CHECKPOS
 				}
-				if (READUINT8(save_p) != 0x1d)
+				if (READUINT8(sav_p) != 0x1d)
 					BADSAVE
 			}
 		case 0x1d:
@@ -8962,7 +9099,7 @@ static void M_CacheCharacterSelectEntry(INT32 i, INT32 skinnum)
 
 static UINT8 M_SetupChoosePlayerDirect(INT32 choice)
 {
-	INT32 skinnum;
+	INT32 skinnum, botskinnum;
 	UINT8 i;
 	UINT8 firstvalid = 255, lastvalid = 255;
 	boolean allowed = false;
@@ -8994,6 +9131,13 @@ static UINT8 M_SetupChoosePlayerDirect(INT32 choice)
 				skinnum = description[i].skinnum[0];
 				if ((skinnum != -1) && (R_SkinUsable(-1, skinnum)))
 				{
+					botskinnum = description[i].skinnum[1];
+					if ((botskinnum != -1) && (!R_SkinUsable(-1, botskinnum)))
+					{
+						// Bot skin isn't unlocked
+						continue;
+					}
+
 					// Handling order.
 					if (firstvalid == 255)
 						firstvalid = i;
@@ -11418,9 +11562,9 @@ static void M_ServerOptions(INT32 choice)
 		OP_ServerOptionsMenu[ 2].status = IT_GRAYEDOUT; // Max players
 		OP_ServerOptionsMenu[ 3].status = IT_GRAYEDOUT; // Allow add-on downloading
 		OP_ServerOptionsMenu[ 4].status = IT_GRAYEDOUT; // Allow players to join
-		OP_ServerOptionsMenu[35].status = IT_GRAYEDOUT; // Master server
-		OP_ServerOptionsMenu[36].status = IT_GRAYEDOUT; // Minimum delay between joins
-		OP_ServerOptionsMenu[37].status = IT_GRAYEDOUT; // Attempts to resynchronise
+		OP_ServerOptionsMenu[36].status = IT_GRAYEDOUT; // Master server
+		OP_ServerOptionsMenu[37].status = IT_GRAYEDOUT; // Minimum delay between joins
+		OP_ServerOptionsMenu[38].status = IT_GRAYEDOUT; // Attempts to resynchronise
 	}
 	else
 	{
@@ -11428,11 +11572,11 @@ static void M_ServerOptions(INT32 choice)
 		OP_ServerOptionsMenu[ 2].status = IT_STRING | IT_CVAR;
 		OP_ServerOptionsMenu[ 3].status = IT_STRING | IT_CVAR;
 		OP_ServerOptionsMenu[ 4].status = IT_STRING | IT_CVAR;
-		OP_ServerOptionsMenu[35].status = (netgame
+		OP_ServerOptionsMenu[36].status = (netgame
 			? IT_GRAYEDOUT
 			: (IT_STRING | IT_CVAR | IT_CV_STRING));
-		OP_ServerOptionsMenu[36].status = IT_STRING | IT_CVAR;
 		OP_ServerOptionsMenu[37].status = IT_STRING | IT_CVAR;
+		OP_ServerOptionsMenu[38].status = IT_STRING | IT_CVAR;
 	}
 #endif
 
@@ -12922,7 +13066,7 @@ static void M_VideoModeMenu(INT32 choice)
 
 	memset(modedescs, 0, sizeof(modedescs));
 
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	VID_PrepareModeList(); // FIXME: hack
 #endif
 	vidm_nummodes = 0;
diff --git a/src/m_menu.h b/src/m_menu.h
index 0465128ef75063b57cd3849bb6faab251e45e139..ba9c326a00eb42d0e9f9dfa5330ad69b4e886ddb 100644
--- a/src/m_menu.h
+++ b/src/m_menu.h
@@ -3,7 +3,7 @@
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 2011-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_misc.c b/src/m_misc.c
index ad2d133ab1dd8e6f743c4c2bab8adecd35d699e7..ac60d49c7227b0087e84e017e8b43ae72d555220 100644
--- a/src/m_misc.c
+++ b/src/m_misc.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -64,8 +64,6 @@ typedef off_t off64_t;
 #define PRIdS "u"
 #elif defined (_WIN32)
 #define PRIdS "Iu"
-#elif defined (DJGPP)
-#define PRIdS "u"
 #else
 #define PRIdS "zu"
 #endif
@@ -165,7 +163,9 @@ consvar_t cv_zlib_window_bitsa = CVAR_INIT ("apng_window_size", "32k", CV_SAVE,
 consvar_t cv_apng_delay = CVAR_INIT ("apng_speed", "1x", CV_SAVE, apng_delay_t, NULL);
 consvar_t cv_apng_downscale = CVAR_INIT ("apng_downscale", "On", CV_SAVE, CV_OnOff, NULL);
 
+#ifdef USE_APNG
 static boolean apng_downscale = false; // So nobody can do something dumb like changing cvars mid output
+#endif
 
 boolean takescreenshot = false; // Take a screenshot this tic
 
diff --git a/src/m_misc.h b/src/m_misc.h
index c5ef9f9f2548e339ef76e96ae02f835b82dec23c..fc5430f013be79da18dd624701111dc3d24ed8d2 100644
--- a/src/m_misc.h
+++ b/src/m_misc.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_perfstats.c b/src/m_perfstats.c
index 1596a87e5a841d019513c706b13608259334d7e7..8a99312e6a3d987de4ef6ab7965e31cbdc220458 100644
--- a/src/m_perfstats.c
+++ b/src/m_perfstats.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -62,7 +62,7 @@ int thinkframe_hooks_capacity = 16;
 
 static INT32 draw_row;
 
-void PS_SetThinkFrameHookInfo(int index, UINT32 time_taken, char* short_src)
+void PS_SetThinkFrameHookInfo(int index, precise_t time_taken, char* short_src)
 {
 	if (!thinkframe_hooks)
 	{
@@ -565,7 +565,7 @@ void M_DrawPerfStats(void)
 				len = (int)strlen(str);
 				if (len > 20)
 					str += len - 20;
-				snprintf(s, sizeof s - 1, "%20s: %u", str, thinkframe_hooks[i].time_taken);
+				snprintf(s, sizeof s - 1, "%20s: %d", str, I_PreciseToMicros(thinkframe_hooks[i].time_taken));
 				V_DrawSmallString(x, y, V_MONOSPACE | V_ALLOWLOWERCASE | text_color, s);
 				y += 4; // repeated code!
 				if (y > 192)
diff --git a/src/m_perfstats.h b/src/m_perfstats.h
index 132bea38c696acaf9a7093cc81f795918452356d..71208fbc19f95d886e7cce17c1982ff61de0089f 100644
--- a/src/m_perfstats.h
+++ b/src/m_perfstats.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -30,11 +30,11 @@ extern int       ps_lua_mobjhooks;
 
 typedef struct
 {
-	UINT32 time_taken;
+	precise_t time_taken;
 	char short_src[LUA_IDSIZE];
 } ps_hookinfo_t;
 
-void PS_SetThinkFrameHookInfo(int index, UINT32 time_taken, char* short_src);
+void PS_SetThinkFrameHookInfo(int index, precise_t time_taken, char* short_src);
 
 void M_DrawPerfStats(void);
 
diff --git a/src/m_queue.c b/src/m_queue.c
index 8603ab20215cd3496d223acc2589dd88fd4073e5..a337ca4ce9b283afad602a6d06376136bb010aad 100644
--- a/src/m_queue.c
+++ b/src/m_queue.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2003      by James Haley
-// Copyright (C) 2003-2020 by Sonic Team Junior.
+// Copyright (C) 2003-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_queue.h b/src/m_queue.h
index 3e9579e11395b3aea2679e17b877fa4591db485e..cc64b8dd7917acdd136ddc7f832ef2737904e66f 100644
--- a/src/m_queue.h
+++ b/src/m_queue.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2003      by James Haley
-// Copyright (C) 2003-2020 by Sonic Team Junior.
+// Copyright (C) 2003-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_random.c b/src/m_random.c
index 481fdb72b06dfd3ee7c3ef520035b69667f480fe..2e6213e1277ce027fc04cd6e7435dbaa8e49963d 100644
--- a/src/m_random.c
+++ b/src/m_random.c
@@ -3,7 +3,7 @@
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 2012-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -60,7 +60,7 @@ UINT8 M_RandomByte(void)
   */
 INT32 M_RandomKey(INT32 a)
 {
-	return (INT32)((rand()/((unsigned)RAND_MAX+1.0f))*a);
+	return (INT32)((rand()/((float)RAND_MAX+1.0f))*a);
 }
 
 /** Provides a random integer in a given range.
@@ -73,7 +73,7 @@ INT32 M_RandomKey(INT32 a)
   */
 INT32 M_RandomRange(INT32 a, INT32 b)
 {
-	return (INT32)((rand()/((unsigned)RAND_MAX+1.0f))*(b-a+1))+a;
+	return (INT32)((rand()/((float)RAND_MAX+1.0f))*(b-a+1))+a;
 }
 
 
diff --git a/src/m_random.h b/src/m_random.h
index 01190e0466a95aa59e9ef5845d83fbf15b085177..df10b4bb371ed14394b897bc07bb9abe78c0f096 100644
--- a/src/m_random.h
+++ b/src/m_random.h
@@ -3,7 +3,7 @@
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
 // Copyright (C) 2012-2016 by Matthew "Kaito Sinclaire" Walsh.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/m_swap.h b/src/m_swap.h
index b44d6de8c1ebe42a8bbb9f18bfce261dd3faf08f..6aa347d97d146bc9c33d1d69cde0ff296b04a8a5 100644
--- a/src/m_swap.h
+++ b/src/m_swap.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/mserv.c b/src/mserv.c
index dfb4174156978b35f6d29bebee1738eac0f2d446..f64c7bea91b6487efca07f01ba7bb41ad786358c 100644
--- a/src/mserv.c
+++ b/src/mserv.c
@@ -1,8 +1,8 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
-// Copyright (C)      2020 by James R.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/mserv.h b/src/mserv.h
index d0d5e49dfe9519fa5d0f1c2904fd0f2849e50100..7a3b3d8ec8461d9b4734353a23e37e587369be86 100644
--- a/src/mserv.h
+++ b/src/mserv.h
@@ -1,8 +1,8 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
-// Copyright (C)      2020 by James R.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_ceilng.c b/src/p_ceilng.c
index f12499d5ce6315e1a8baf70b43f454443ae0bef8..43f3cc1d52400ef4086a09503d4039d9df336c5c 100644
--- a/src/p_ceilng.c
+++ b/src/p_ceilng.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -395,9 +395,8 @@ INT32 EV_DoCeiling(line_t *line, ceiling_e type)
 	sector_t *sec;
 	ceiling_t *ceiling;
 	mtag_t tag = Tag_FGet(&line->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, tag, secnum)
+	TAG_ITER_SECTORS(tag, secnum)
 	{
 		sec = &sectors[secnum];
 
@@ -617,9 +616,8 @@ INT32 EV_DoCrush(line_t *line, ceiling_e type)
 	sector_t *sec;
 	ceiling_t *ceiling;
 	mtag_t tag = Tag_FGet(&line->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, tag, secnum)
+	TAG_ITER_SECTORS(tag, secnum)
 	{
 		sec = &sectors[secnum];
 
diff --git a/src/p_enemy.c b/src/p_enemy.c
index 75228b16ba2347634ba4ca2ee843632d6a38ede6..7650cbe03ef2bce04aed6b11de1f1816876749ef 100644
--- a/src/p_enemy.c
+++ b/src/p_enemy.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -25,6 +25,7 @@
 #include "i_video.h"
 #include "z_zone.h"
 #include "lua_hook.h"
+#include "m_cond.h" // SECRET_SKIN
 
 #ifdef HW3SOUND
 #include "hardware/hw3sound.h"
@@ -1834,7 +1835,7 @@ void A_SnailerThink(mobj_t *actor)
 			fixed_t dist;
 			fixed_t dx, dy;
 
-			dist = R_PointToDist2(0, 0, actor->x - actor->target->x, actor->y - actor->target->y);
+			dist = P_AproxDistance(actor->x - actor->target->x, actor->y - actor->target->y);
 
 			if (an > ANGLE_45 && an <= ANGLE_90) // fire at 45 degrees to the left
 			{
@@ -4201,7 +4202,7 @@ void A_CustomPower(mobj_t *actor)
 		return;
 	}
 
-	if (locvar1 >= NUMPOWERS)
+	if (locvar1 >= NUMPOWERS || locvar1 < 0)
 	{
 		CONS_Debug(DBG_GAMELOGIC, "Power #%d out of range!\n", locvar1);
 		return;
@@ -4912,7 +4913,7 @@ void A_ThrownRing(mobj_t *actor)
 		}
 
 		if (actor->tracer && (actor->tracer->health)
-			&& (actor->tracer->player->powers[pw_shield] & SH_PROTECTELECTRIC))// Already found someone to follow.
+			&& (actor->tracer->player && actor->tracer->player->powers[pw_shield] & SH_PROTECTELECTRIC))// Already found someone to follow.
 		{
 			const INT32 temp = actor->threshold;
 			actor->threshold = 32000;
@@ -5101,6 +5102,33 @@ void A_SignSpin(mobj_t *actor)
 	}
 }
 
+static boolean SignSkinCheck(player_t *player, INT32 num)
+{
+	INT32 i;
+
+	if (player != NULL)
+	{
+		// Use player's availabilities
+		return R_SkinUsable(player - players, num);
+	}
+
+	// Player invalid, only show characters that are unlocked from the start.
+	for (i = 0; i < MAXUNLOCKABLES; i++)
+	{
+		if (unlockables[i].type == SECRET_SKIN)
+		{
+			INT32 lockedSkin = M_UnlockableSkinNum(&unlockables[i]);
+
+			if (lockedSkin == num)
+			{
+				return false;
+			}
+		}
+	}
+
+	return true;
+}
+
 // Function: A_SignPlayer
 //
 // Description: Changes the state of a level end sign to reflect the player that hit it.
@@ -5161,23 +5189,21 @@ void A_SignPlayer(mobj_t *actor)
 		// I turned this function into a fucking mess. I'm so sorry. -Lach
 		if (locvar1 == -2) // random skin
 		{
-#define skincheck(num) (player ? !R_SkinUsable(player-players, num) : skins[num].availability > 0)
 			player_t *player = actor->target ? actor->target->player : NULL;
 			UINT8 skinnum;
 			UINT8 skincount = 0;
 			for (skinnum = 0; skinnum < numskins; skinnum++)
-				if (!skincheck(skinnum))
+				if (SignSkinCheck(player, skinnum))
 					skincount++;
 			skinnum = P_RandomKey(skincount);
 			for (skincount = 0; skincount < numskins; skincount++)
 			{
 				if (skincount > skinnum)
 					break;
-				if (skincheck(skincount))
+				if (!SignSkinCheck(player, skincount))
 					skinnum++;
 			}
 			skin = &skins[skinnum];
-#undef skincheck
 		}
 		else // specific skin
 			skin = &skins[locvar1];
@@ -5920,13 +5946,18 @@ void A_DetonChase(mobj_t *actor)
 
 	if (actor->reactiontime == -42)
 	{
-		fixed_t xyspeed;
+		fixed_t xyspeed, speed;
+
+		if (actor->target->player)
+			speed = actor->target->player->normalspeed;
+		else
+			speed = actor->target->info->speed;
 
 		actor->reactiontime = -42;
 
 		exact = actor->movedir>>ANGLETOFINESHIFT;
-		xyspeed = FixedMul(FixedMul(actor->tracer->player->normalspeed,3*FRACUNIT/4), FINECOSINE(exact));
-		actor->momz = FixedMul(FixedMul(actor->tracer->player->normalspeed,3*FRACUNIT/4), FINESINE(exact));
+		xyspeed = FixedMul(FixedMul(speed,3*FRACUNIT/4), FINECOSINE(exact));
+		actor->momz = FixedMul(FixedMul(speed,3*FRACUNIT/4), FINESINE(exact));
 
 		exact = actor->angle>>ANGLETOFINESHIFT;
 		actor->momx = FixedMul(xyspeed, FINECOSINE(exact));
@@ -7521,7 +7552,7 @@ void A_Boss2PogoTarget(mobj_t *actor)
 	}
 
 	// Target hit, retreat!
-	if (actor->target->player->powers[pw_flashing] > TICRATE || actor->flags2 & MF2_FRET)
+	if ((actor->target->player && actor->target->player->powers[pw_flashing] > TICRATE) || actor->flags2 & MF2_FRET)
 	{
 		UINT8 prandom = P_RandomByte();
 		actor->z++; // unstick from the floor
@@ -7532,7 +7563,7 @@ void A_Boss2PogoTarget(mobj_t *actor)
 	// Try to land on top of the player.
 	else if (P_AproxDistance(actor->x-actor->target->x, actor->y-actor->target->y) < FixedMul(512*FRACUNIT, actor->scale))
 	{
-		fixed_t airtime, gravityadd, zoffs;
+		fixed_t airtime, gravityadd, zoffs, height;
 
 		// check gravity in the sector (for later math)
 		P_CheckGravity(actor, true);
@@ -7554,7 +7585,13 @@ void A_Boss2PogoTarget(mobj_t *actor)
 		// Remember, kids!
 		// Reduced down Calculus lets you avoid bad 'logic math' loops!
 		//airtime = FixedDiv(-actor->momz<<1, gravityadd)<<1; // going from 0 to 0 is much simpler
-		zoffs = (P_GetPlayerHeight(actor->target->player)>>1) + (actor->target->floorz - actor->floorz); // offset by the difference in floor height plus half the player height,
+
+		if (actor->target->player)
+			height = P_GetPlayerHeight(actor->target->player) >> 1;
+		else
+			height = actor->target->height >> 1;
+
+		zoffs = height + (actor->target->floorz - actor->floorz); // offset by the difference in floor height plus half the player height,
 		airtime = FixedDiv((-actor->momz - FixedSqrt(FixedMul(actor->momz,actor->momz)+zoffs)), gravityadd)<<1; // to try and land on their head rather than on their feet
 
 		actor->angle = R_PointToAngle2(actor->x, actor->y, actor->target->x, actor->target->y);
@@ -9862,28 +9899,29 @@ void A_Custom3DRotate(mobj_t *actor)
 
 	const fixed_t radius = FixedMul(loc1lw*FRACUNIT, actor->scale);
 	const fixed_t hOff = FixedMul(loc1up*FRACUNIT, actor->scale);
-	const fixed_t hspeed = FixedMul(loc2up*FRACUNIT/10, actor->scale);
-	const fixed_t vspeed = FixedMul(loc2lw*FRACUNIT/10, actor->scale);
+	const fixed_t hspeed = loc2up*FRACUNIT/10; // Monster's note (29/05/21): DO NOT SCALE, this is an angular speed!
+	const fixed_t vspeed = loc2lw*FRACUNIT/10; // ditto
 
 	if (LUA_CallAction(A_CUSTOM3DROTATE, actor))
 		return;
 
-	if (actor->target->health == 0)
+	if (!actor->target) // Ensure we actually have a target first.
 	{
+		CONS_Printf("Error: A_Custom3DRotate: Object has no target.\n");
 		P_RemoveMobj(actor);
 		return;
 	}
 
-	if (!actor->target) // This should NEVER happen.
+	if (actor->target->health == 0)
 	{
-		if (cv_debug)
-			CONS_Printf("Error: Object has no target\n");
 		P_RemoveMobj(actor);
 		return;
 	}
+
 	if (hspeed==0 && vspeed==0)
 	{
-		CONS_Printf("Error: A_Custom3DRotate: Object has no speed.\n");
+		if (cv_debug)
+			CONS_Printf("Error: A_Custom3DRotate: Object has no speed.\n");
 		return;
 	}
 
@@ -14308,6 +14346,14 @@ void A_RolloutRock(mobj_t *actor)
 	if (LUA_CallAction(A_ROLLOUTROCK, actor))
 		return;
 
+	if (!actor->tracer || P_MobjWasRemoved(actor->tracer) || !actor->tracer->health)
+		actor->flags |= MF_PUSHABLE;
+	else
+	{
+		actor->flags2 = (actor->flags2 & ~MF2_OBJECTFLIP) | (actor->tracer->flags2 & MF2_OBJECTFLIP);
+		actor->eflags = (actor->eflags & ~MFE_VERTICALFLIP) | (actor->tracer->eflags & MFE_VERTICALFLIP);
+	}
+
 	actor->friction = FRACUNIT; // turns out riding on solids sucks, so let's just make it easier on ourselves
 
 	if (actor->eflags & MFE_JUSTHITFLOOR)
@@ -14346,7 +14392,8 @@ void A_RolloutRock(mobj_t *actor)
 
 	speed = P_AproxDistance(actor->momx, actor->momy); // recalculate speed for visual rolling
 
-	if (speed < actor->scale >> 1) // stop moving if speed is insignificant
+	if (((actor->flags & MF_PUSHABLE) || !(actor->flags2 & MF2_STRONGBOX))
+		&& speed < actor->scale) // stop moving if speed is insignificant
 	{
 		actor->momx = 0;
 		actor->momy = 0;
@@ -14366,9 +14413,6 @@ void A_RolloutRock(mobj_t *actor)
 
 	actor->frame = actor->reactiontime % maxframes; // set frame
 
-	if (!actor->tracer || P_MobjWasRemoved(actor->tracer) || !actor->tracer->health)
-		actor->flags |= MF_PUSHABLE;
-
 	if (!(actor->flags & MF_PUSHABLE) || (actor->movecount != 1)) // if being ridden or haven't moved, don't disappear
 		actor->fuse = actor->info->painchance;
 	else if (actor->fuse < 2*TICRATE)
diff --git a/src/p_floor.c b/src/p_floor.c
index 7c26065b59b6e9ef0f002bf20907e3eae75856cc..d81a022e50d1b38895fceb5f0d73440410f25450 100644
--- a/src/p_floor.c
+++ b/src/p_floor.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -635,7 +635,6 @@ void T_BounceCheese(bouncecheese_t *bouncer)
 	boolean remove;
 	INT32 i;
 	mtag_t tag = Tag_FGet(&bouncer->sourceline->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
 	if (bouncer->sector->crumblestate == CRUMBLE_RESTORE || bouncer->sector->crumblestate == CRUMBLE_WAIT
 		|| bouncer->sector->crumblestate == CRUMBLE_ACTIVATED) // Oops! Crumbler says to remove yourself!
@@ -650,7 +649,7 @@ void T_BounceCheese(bouncecheese_t *bouncer)
 	}
 
 	// You can use multiple target sectors, but at your own risk!!!
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 	{
 		actionsector = &sectors[i];
 		actionsector->moved = true;
@@ -775,7 +774,6 @@ void T_StartCrumble(crumble_t *crumble)
 	sector_t *sector;
 	INT32 i;
 	mtag_t tag = Tag_FGet(&crumble->sourceline->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
 	// Once done, the no-return thinker just sits there,
 	// constantly 'returning'... kind of an oxymoron, isn't it?
@@ -804,7 +802,7 @@ void T_StartCrumble(crumble_t *crumble)
 		}
 		else if (++crumble->timer == 0) // Reposition back to original spot
 		{
-			TAG_ITER_SECTORS(0, tag, i)
+			TAG_ITER_SECTORS(tag, i)
 			{
 				sector = &sectors[i];
 
@@ -840,7 +838,7 @@ void T_StartCrumble(crumble_t *crumble)
 		// Flash to indicate that the platform is about to return.
 		if (crumble->timer > -224 && (leveltime % ((abs(crumble->timer)/8) + 1) == 0))
 		{
-			TAG_ITER_SECTORS(0, tag, i)
+			TAG_ITER_SECTORS(tag, i)
 			{
 				sector = &sectors[i];
 
@@ -932,7 +930,7 @@ void T_StartCrumble(crumble_t *crumble)
 		P_RemoveThinker(&crumble->thinker);
 	}
 
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 	{
 		sector = &sectors[i];
 		sector->moved = true;
@@ -948,7 +946,6 @@ void T_StartCrumble(crumble_t *crumble)
 void T_MarioBlock(mariothink_t *block)
 {
 	INT32 i;
-	TAG_ITER_DECLARECOUNTER(0);
 
 	T_MovePlane
 	(
@@ -983,7 +980,7 @@ void T_MarioBlock(mariothink_t *block)
 		block->sector->ceilspeed = 0;
 		block->direction = 0;
 	}
-	TAG_ITER_SECTORS(0, (INT16)block->tag, i)
+	TAG_ITER_SECTORS((INT16)block->tag, i)
 		P_RecalcPrecipInSector(&sectors[i]);
 }
 
@@ -1293,9 +1290,8 @@ void T_NoEnemiesSector(noenemies_t *nobaddies)
 	INT32 secnum = -1;
 	boolean FOFsector = false;
 	mtag_t tag = Tag_FGet(&nobaddies->sourceline->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, tag, secnum)
+	TAG_ITER_SECTORS(tag, secnum)
 	{
 		sec = &sectors[secnum];
 
@@ -1306,14 +1302,13 @@ void T_NoEnemiesSector(noenemies_t *nobaddies)
 		{
 			INT32 targetsecnum = -1;
 			mtag_t tag2 = Tag_FGet(&sec->lines[i]->tags);
-			TAG_ITER_DECLARECOUNTER(1);
 
 			if (sec->lines[i]->special < 100 || sec->lines[i]->special >= 300)
 				continue;
 
 			FOFsector = true;
 
-			TAG_ITER_SECTORS(1, tag2, targetsecnum)
+			TAG_ITER_SECTORS(tag2, targetsecnum)
 			{
 				if (T_SectorHasEnemies(&sectors[targetsecnum]))
 					return;
@@ -1400,7 +1395,6 @@ void T_EachTimeThinker(eachtime_t *eachtime)
 	fixed_t bottomheight, topheight;
 	ffloor_t *rover;
 	mtag_t tag = Tag_FGet(&eachtime->sourceline->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
 	for (i = 0; i < MAXPLAYERS; i++)
 	{
@@ -1410,7 +1404,7 @@ void T_EachTimeThinker(eachtime_t *eachtime)
 		eachtime->playersOnArea[i] = false;
 	}
 
-	TAG_ITER_SECTORS(0, tag, secnum)
+	TAG_ITER_SECTORS(tag, secnum)
 	{
 		sec = &sectors[secnum];
 
@@ -1428,14 +1422,13 @@ void T_EachTimeThinker(eachtime_t *eachtime)
 		{
 			INT32 targetsecnum = -1;
 			mtag_t tag2 = Tag_FGet(&sec->lines[i]->tags);
-			TAG_ITER_DECLARECOUNTER(1);
 
 			if (sec->lines[i]->special < 100 || sec->lines[i]->special >= 300)
 				continue;
 
 			FOFsector = true;
 
-			TAG_ITER_SECTORS(1, tag2, targetsecnum)
+			TAG_ITER_SECTORS(tag2, targetsecnum)
 			{
 				targetsec = &sectors[targetsecnum];
 
@@ -1570,12 +1563,11 @@ void T_RaiseSector(raise_t *raise)
 	INT32 direction;
 	result_e res = 0;
 	mtag_t tag = raise->tag;
-	TAG_ITER_DECLARECOUNTER(0);
 
 	if (raise->sector->crumblestate >= CRUMBLE_FALL || raise->sector->ceilingdata)
 		return;
 
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 	{
 		sector = &sectors[i];
 
@@ -1702,7 +1694,7 @@ void T_RaiseSector(raise_t *raise)
 	raise->sector->ceilspeed = 42;
 	raise->sector->floorspeed = speed*direction;
 
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 		P_RecalcPrecipInSector(&sectors[i]);
 }
 
@@ -1820,9 +1812,8 @@ void EV_DoFloor(line_t *line, floor_e floortype)
 	sector_t *sec;
 	floormove_t *dofloor;
 	mtag_t tag = Tag_FGet(&line->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, tag, secnum)
+	TAG_ITER_SECTORS(tag, secnum)
 	{
 		sec = &sectors[secnum];
 
@@ -2037,10 +2028,9 @@ void EV_DoElevator(line_t *line, elevator_e elevtype, boolean customspeed)
 	sector_t *sec;
 	elevator_t *elevator;
 	mtag_t tag = Tag_FGet(&line->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
 	// act on all sectors with the same tag as the triggering linedef
-	TAG_ITER_SECTORS(0, tag, secnum)
+	TAG_ITER_SECTORS(tag, secnum)
 	{
 		sec = &sectors[secnum];
 
@@ -2337,7 +2327,6 @@ INT32 EV_StartCrumble(sector_t *sec, ffloor_t *rover, boolean floating,
 	sector_t *foundsec;
 	INT32 i;
 	mtag_t tag = Tag_FGet(&rover->master->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
 	// If floor is already activated, skip it
 	if (sec->floordata)
@@ -2380,7 +2369,7 @@ INT32 EV_StartCrumble(sector_t *sec, ffloor_t *rover, boolean floating,
 
 	crumble->sector->crumblestate = CRUMBLE_ACTIVATED;
 
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 	{
 		foundsec = &sectors[i];
 
diff --git a/src/p_inter.c b/src/p_inter.c
index f2df89bbe0c8543e8fc05290baab0c80d4f284d3..89989d1af9aee7cffa44cc84c897c2648a0ad374 100644
--- a/src/p_inter.c
+++ b/src/p_inter.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_lights.c b/src/p_lights.c
index d396e92d3dedff6ac56f40901335ec701d6625e9..1e41146da682a2ed5d93166974f1b04843bd40ed 100644
--- a/src/p_lights.c
+++ b/src/p_lights.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -374,10 +374,9 @@ void P_FadeLightBySector(sector_t *sector, INT32 destvalue, INT32 speed, boolean
 void P_FadeLight(INT16 tag, INT32 destvalue, INT32 speed, boolean ticbased, boolean force)
 {
 	INT32 i;
-	TAG_ITER_DECLARECOUNTER(0);
 
 	// search all sectors for ones with tag
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 	{
 		if (!force && ticbased // always let speed fader execute
 			&& sectors[i].lightingdata
diff --git a/src/p_local.h b/src/p_local.h
index 9359290fae06fc000daece09423260b70a565ac7..1fcd3050d92fde6fd1056f86d81137be89b93902 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -143,6 +143,8 @@ angle_t P_GetLocalAngle(player_t *player);
 void P_SetLocalAngle(player_t *player, angle_t angle);
 void P_ForceLocalAngle(player_t *player, angle_t angle);
 boolean P_PlayerFullbright(player_t *player);
+boolean P_PlayerCanEnterSpinGaps(player_t *player);
+boolean P_PlayerShouldUseSpinHeight(player_t *player);
 
 boolean P_IsObjectInGoop(mobj_t *mo);
 boolean P_IsObjectOnGround(mobj_t *mo);
@@ -279,7 +281,6 @@ mobjtype_t P_GetMobjtype(UINT16 mthingtype);
 void P_RespawnSpecials(void);
 
 mobj_t *P_SpawnMobj(fixed_t x, fixed_t y, fixed_t z, mobjtype_t type);
-void P_SetMobjSpawnDefaults(mobj_t *mobj);
 
 void P_RecalcPrecipInSector(sector_t *sector);
 void P_PrecipitationEffects(void);
diff --git a/src/p_map.c b/src/p_map.c
index dde948dc57215436ed6b596a6743e5192440f364..e55bebb9a74d9a3428b270398570373b593d8fc8 100644
--- a/src/p_map.c
+++ b/src/p_map.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -419,16 +419,23 @@ boolean P_DoSpring(mobj_t *spring, mobj_t *object)
 			}
 			else if (object->player->dashmode >= DASHMODE_THRESHOLD)
 				P_SetPlayerMobjState(object, S_PLAY_DASH);
-			else if (P_IsObjectOnGround(object) && horizspeed >= FixedMul(object->player->runspeed, object->scale))
-				P_SetPlayerMobjState(object, S_PLAY_RUN);
+			else if (P_IsObjectOnGround(object))
+				P_SetPlayerMobjState(object, (horizspeed >= FixedMul(object->player->runspeed, object->scale)) ? S_PLAY_RUN : S_PLAY_WALK);
 			else
-				P_SetPlayerMobjState(object, S_PLAY_WALK);
+				P_SetPlayerMobjState(object, (object->momz > 0) ? S_PLAY_SPRING : S_PLAY_FALL);
 		}
 		else if (P_MobjFlip(object)*vertispeed > 0)
 			P_SetPlayerMobjState(object, S_PLAY_SPRING);
 		else
 			P_SetPlayerMobjState(object, S_PLAY_FALL);
 	}
+	else if (horizspeed
+		&& object->tracer
+		&& object->tracer->player
+		&& object->tracer->player->powers[pw_carry] != CR_NONE
+		&& object->tracer->tracer == object
+		&& (!demoplayback || P_ControlStyle(object->tracer->player) == CS_LMAOGALOG))
+			P_SetPlayerAngle(object->tracer->player, spring->angle);
 
 	object->standingslope = NULL; // And again.
 
@@ -511,6 +518,7 @@ static void P_DoFanAndGasJet(mobj_t *spring, mobj_t *object)
 			if (spring->state != &states[S_STEAM1]) // Only when it bursts
 				break;
 
+			object->eflags |= MFE_SPRUNG;
 			object->momz = flipval*FixedMul(speed, FixedSqrt(FixedMul(spring->scale, object->scale))); // scale the speed with both objects' scales, just like with springs!
 
 			if (p)
@@ -2257,6 +2265,8 @@ boolean P_CheckPosition(mobj_t *thing, fixed_t x, fixed_t y)
 			{
 				if (!P_BlockThingsIterator(bx, by, PIT_CheckThing))
 					blockval = false;
+				else
+					tmhitthing = tmfloorthing;
 				if (P_MobjWasRemoved(tmthing))
 					return false;
 			}
@@ -2721,7 +2731,10 @@ boolean P_TryMove(mobj_t *thing, fixed_t x, fixed_t y, boolean allowdropoff)
 			if (thing->type == MT_SKIM)
 				maxstep = 0;
 
-			if (tmceilingz - tmfloorz < thing->height)
+			if (tmceilingz - tmfloorz < thing->height
+				|| (thing->player
+					&& tmceilingz - tmfloorz < P_GetPlayerHeight(thing->player)
+					&& !P_PlayerCanEnterSpinGaps(thing->player)))
 			{
 				if (tmfloorthing)
 					tmhitthing = tmfloorthing;
@@ -3329,6 +3342,11 @@ static boolean PTR_LineIsBlocking(line_t *li)
 	if (openbottom - slidemo->z > FixedMul(MAXSTEPMOVE, slidemo->scale))
 		return true; // too big a step up
 
+	if (slidemo->player
+		&& openrange < P_GetPlayerHeight(slidemo->player)
+		&& !P_PlayerCanEnterSpinGaps(slidemo->player))
+			return true; // nonspin character should not take this path
+
 	return false;
 }
 
diff --git a/src/p_maputl.c b/src/p_maputl.c
index 90718a41cbe700621c191994401925ca5ab360e3..efcebe7363741a3ff1bb3a851dfc7e8653e6f3c8 100644
--- a/src/p_maputl.c
+++ b/src/p_maputl.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_maputl.h b/src/p_maputl.h
index 08b606833cd7895e11211de6eb94b4742f13125e..cec344d03df8b810f4a952dabb69de2746dccacd 100644
--- a/src/p_maputl.h
+++ b/src/p_maputl.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_mobj.c b/src/p_mobj.c
index 26ceb5a820f8c7b2a398544f40f34c91967a479a..10220fff6df1b31d72b1d0b5959a62f4f20a095b 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -3188,13 +3188,16 @@ boolean P_SceneryZMovement(mobj_t *mo)
 //
 boolean P_CanRunOnWater(player_t *player, ffloor_t *rover)
 {
-	fixed_t topheight = P_GetFFloorTopZAt(rover, player->mo->x, player->mo->y);
+	boolean flip = player->mo->eflags & MFE_VERTICALFLIP;
+	fixed_t surfaceheight = flip ? P_GetFFloorBottomZAt(rover, player->mo->x, player->mo->y) : P_GetFFloorTopZAt(rover, player->mo->x, player->mo->y);
+	fixed_t playerbottom = flip ? (player->mo->z + player->mo->height) : player->mo->z;
+	boolean doifit = flip ? (surfaceheight - player->mo->floorz >= player->mo->height) : (player->mo->ceilingz - surfaceheight >= player->mo->height);
 
 	if (!player->powers[pw_carry] && !player->homing
-		&& ((player->powers[pw_super] || player->charflags & SF_RUNONWATER || player->dashmode >= DASHMODE_THRESHOLD) && player->mo->ceilingz-topheight >= player->mo->height)
+		&& ((player->powers[pw_super] || player->charflags & SF_RUNONWATER || player->dashmode >= DASHMODE_THRESHOLD) && doifit)
 		&& (rover->flags & FF_SWIMMABLE) && !(player->pflags & PF_SPINNING) && player->speed > FixedMul(player->runspeed, player->mo->scale)
 		&& !(player->pflags & PF_SLIDING)
-		&& abs(player->mo->z - topheight) < FixedMul(30*FRACUNIT, player->mo->scale))
+		&& abs(playerbottom - surfaceheight) < FixedMul(30*FRACUNIT, player->mo->scale))
 		return true;
 
 	return false;
@@ -3283,11 +3286,9 @@ void P_MobjCheckWater(mobj_t *mobj)
 			boolean electric = !!(p->powers[pw_shield] & SH_PROTECTELECTRIC);
 			if (electric || ((p->powers[pw_shield] & SH_PROTECTFIRE) && !(p->powers[pw_shield] & SH_PROTECTWATER) && !(mobj->eflags & MFE_TOUCHLAVA)))
 			{ // Water removes electric and non-water fire shields...
-				P_FlashPal(p,
-				electric
-				? PAL_WHITE
-				: PAL_NUKE,
-				1);
+			    if (electric)
+				    P_FlashPal(p, PAL_WHITE, 1);
+				
 				p->powers[pw_shield] = p->powers[pw_shield] & SH_STACK;
 			}
 		}
@@ -4604,9 +4605,8 @@ static boolean P_Boss4MoveCage(mobj_t *mobj, fixed_t delta)
 	INT32 snum;
 	sector_t *sector;
 	boolean gotcage = false;
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, tag, snum)
+	TAG_ITER_SECTORS(tag, snum)
 	{
 		sector = &sectors[snum];
 		sector->floorheight += delta;
@@ -4690,9 +4690,8 @@ static void P_Boss4DestroyCage(mobj_t *mobj)
 	size_t a;
 	sector_t *sector, *rsec;
 	ffloor_t *rover;
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, tag, snum)
+	TAG_ITER_SECTORS(tag, snum)
 	{
 		sector = &sectors[snum];
 
@@ -10440,7 +10439,44 @@ mobj_t *P_SpawnMobj(fixed_t x, fixed_t y, fixed_t z, mobjtype_t type)
 	mobj->x = x;
 	mobj->y = y;
 
-	P_SetMobjSpawnDefaults(mobj);
+	mobj->radius = info->radius;
+	mobj->height = info->height;
+	mobj->flags = info->flags;
+
+	mobj->health = (info->spawnhealth ? info->spawnhealth : 1);
+
+	mobj->reactiontime = info->reactiontime;
+
+	mobj->lastlook = -1; // stuff moved in P_enemy.P_LookForPlayer
+
+	// do not set the state with P_SetMobjState,
+	// because action routines can not be called yet
+	st = &states[info->spawnstate];
+
+	mobj->state = st;
+	mobj->tics = st->tics;
+	mobj->sprite = st->sprite;
+	mobj->frame = st->frame; // FF_FRAMEMASK for frame, and other bits..
+	P_SetupStateAnimation(mobj, st);
+
+	mobj->friction = ORIG_FRICTION;
+
+	mobj->movefactor = FRACUNIT;
+
+	// All mobjs are created at 100% scale.
+	mobj->scale = FRACUNIT;
+	mobj->destscale = mobj->scale;
+	mobj->scalespeed = FRACUNIT/12;
+
+	// TODO: Make this a special map header
+	if ((maptol & TOL_ERZ3) && !(mobj->type == MT_BLACKEGGMAN))
+		mobj->destscale = FRACUNIT/2;
+
+	// Sprite rendering
+	mobj->blendmode = AST_TRANSLUCENT;
+	mobj->spritexscale = mobj->spriteyscale = mobj->scale;
+	mobj->spritexoffset = mobj->spriteyoffset = 0;
+	mobj->floorspriteslope = NULL;
 
 	// set subsector and/or block links
 	P_SetThingPosition(mobj);
@@ -10747,8 +10783,6 @@ mobj_t *P_SpawnMobj(fixed_t x, fixed_t y, fixed_t z, mobjtype_t type)
 		mobj->frame &= ~FF_FRAMEMASK;
 	}
 
-	st = &states[info->spawnstate];
-
 	// Call action functions when the state is set
 	if (st->action.acp1 && (mobj->flags & MF_RUNSPAWNFUNC))
 	{
@@ -10779,52 +10813,6 @@ mobj_t *P_SpawnMobj(fixed_t x, fixed_t y, fixed_t z, mobjtype_t type)
 	return mobj;
 }
 
-void P_SetMobjSpawnDefaults(mobj_t *mobj)
-{
-	const mobjinfo_t *info = mobj->info;
-	state_t *st = &states[info->spawnstate];
-
-	mobj->radius = info->radius;
-	mobj->height = info->height;
-	mobj->flags = info->flags;
-
-	mobj->health = (info->spawnhealth ? info->spawnhealth : 1);
-
-	mobj->reactiontime = info->reactiontime;
-
-	mobj->lastlook = -1; // stuff moved in P_enemy.P_LookForPlayer
-
-	// do not set the state with P_SetMobjState,
-	// because action routines can not be called yet
-	mobj->state = st;
-	mobj->tics = st->tics;
-	mobj->sprite = st->sprite;
-	mobj->frame = st->frame; // FF_FRAMEMASK for frame, and other bits..
-	P_SetupStateAnimation(mobj, st);
-
-	mobj->friction = ORIG_FRICTION;
-
-	mobj->movefactor = FRACUNIT;
-
-	// All mobjs are created at 100% scale.
-	mobj->scale = FRACUNIT;
-	mobj->destscale = mobj->scale;
-	mobj->scalespeed = FRACUNIT/12;
-
-	// TODO: Make this a special map header
-	if ((maptol & TOL_ERZ3) && !(mobj->type == MT_BLACKEGGMAN))
-		mobj->destscale = FRACUNIT/2;
-
-	// Make sure scale matches destscale immediately when spawned
-	P_SetScale(mobj, mobj->destscale);
-
-	// Sprite rendering
-	mobj->blendmode = AST_TRANSLUCENT;
-	mobj->spritexscale = mobj->spriteyscale = FRACUNIT;
-	mobj->spritexoffset = mobj->spriteyoffset = 0;
-	mobj->floorspriteslope = NULL;
-}
-
 static precipmobj_t *P_SpawnPrecipMobj(fixed_t x, fixed_t y, fixed_t z, mobjtype_t type)
 {
 	state_t *st;
@@ -11972,6 +11960,7 @@ static boolean P_SetupEmblem(mapthing_t *mthing, mobj_t *mobj)
 	INT32 j;
 	emblem_t* emblem = M_GetLevelEmblems(gamemap);
 	skincolornum_t emcolor;
+	boolean validEmblem = true;
 
 	while (emblem)
 	{
@@ -11996,8 +11985,19 @@ static boolean P_SetupEmblem(mapthing_t *mthing, mobj_t *mobj)
 	emcolor = M_GetEmblemColor(&emblemlocations[j]); // workaround for compiler complaint about bad function casting
 	mobj->color = (UINT16)emcolor;
 
-	if (emblemlocations[j].collected
-		|| (emblemlocations[j].type == ET_SKIN && emblemlocations[j].var != players[0].skin))
+	validEmblem = !emblemlocations[j].collected;
+
+	if (emblemlocations[j].type == ET_SKIN)
+	{
+		INT32 skinnum = M_EmblemSkinNum(&emblemlocations[j]);
+
+		if (players[0].skin != skinnum)
+		{
+			validEmblem = false;
+		}
+	}
+
+	if (validEmblem == false)
 	{
 		P_UnsetThingPosition(mobj);
 		mobj->flags |= MF_NOCLIP;
diff --git a/src/p_mobj.h b/src/p_mobj.h
index 5bb7c908e85463020507f1e02dbb7059d904ddf6..82cd056a876d429d8cc58b1bd5ec0e7f99185644 100644
--- a/src/p_mobj.h
+++ b/src/p_mobj.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_polyobj.c b/src/p_polyobj.c
index 874edbd50cfb60d6ff0308748dd149c96f8480c3..6431e46248f0f426de801e2c2e95d9835ab07ff0 100644
--- a/src/p_polyobj.c
+++ b/src/p_polyobj.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2006      by James Haley
-// Copyright (C) 2006-2020 by Sonic Team Junior.
+// Copyright (C) 2006-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_polyobj.h b/src/p_polyobj.h
index 8c29469653aa6207731fe7dcccbebba313d345b7..7c814e0bf14766bf6f6cf2af134675389d0f8797 100644
--- a/src/p_polyobj.h
+++ b/src/p_polyobj.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2006      by James Haley
-// Copyright (C) 2006-2020 by Sonic Team Junior.
+// Copyright (C) 2006-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_pspr.h b/src/p_pspr.h
index 231262beb3aa204b331103a42342369efb624259..4525ba14cc9f4844573a22e5df2f36418799efa2 100644
--- a/src/p_pspr.h
+++ b/src/p_pspr.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_saveg.c b/src/p_saveg.c
index c1364e08fc4400349dac9e7325b4d2ee0b8ca8a4..770c641b924f8e233fdccc884a53729516d4cafa 100644
--- a/src/p_saveg.c
+++ b/src/p_saveg.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -64,12 +64,29 @@ typedef enum
 static inline void P_ArchivePlayer(void)
 {
 	const player_t *player = &players[consoleplayer];
-	INT16 skininfo = player->skin + (botskin<<5);
 	SINT8 pllives = player->lives;
 	if (pllives < startinglivesbalance[numgameovers]) // Bump up to 3 lives if the player
 		pllives = startinglivesbalance[numgameovers]; // has less than that.
 
-	WRITEUINT16(save_p, skininfo);
+#ifdef NEWSKINSAVES
+	// Write a specific value into the old skininfo location.
+	// If we read something other than this, it's an older save file that used skin numbers.
+	WRITEUINT16(save_p, NEWSKINSAVES);
+#endif
+
+	// Write skin names, so that loading skins in different orders
+	// doesn't change who the save file is for!
+	WRITESTRINGN(save_p, skins[player->skin].name, SKINNAMESIZE);
+
+	if (botskin != 0)
+	{
+		WRITESTRINGN(save_p, skins[botskin-1].name, SKINNAMESIZE);
+	}
+	else
+	{
+		WRITESTRINGN(save_p, "\0", SKINNAMESIZE);
+	}
+
 	WRITEUINT8(save_p, numgameovers);
 	WRITESINT8(save_p, pllives);
 	WRITEUINT32(save_p, player->score);
@@ -78,9 +95,27 @@ static inline void P_ArchivePlayer(void)
 
 static inline void P_UnArchivePlayer(void)
 {
-	INT16 skininfo = READUINT16(save_p);
-	savedata.skin = skininfo & ((1<<5) - 1);
-	savedata.botskin = skininfo >> 5;
+#ifdef NEWSKINSAVES
+	INT16 backwardsCompat = READUINT16(save_p);
+
+	if (backwardsCompat != NEWSKINSAVES)
+	{
+		// This is an older save file, which used direct skin numbers.
+		savedata.skin = backwardsCompat & ((1<<5) - 1);
+		savedata.botskin = backwardsCompat >> 5;
+	}
+	else
+#endif
+	{
+		char ourSkinName[SKINNAMESIZE+1];
+		char botSkinName[SKINNAMESIZE+1];
+
+		READSTRINGN(save_p, ourSkinName, SKINNAMESIZE);
+		savedata.skin = R_SkinAvailable(ourSkinName);
+
+		READSTRINGN(save_p, botSkinName, SKINNAMESIZE);
+		savedata.botskin = R_SkinAvailable(botSkinName) + 1;
+	}
 
 	savedata.numgameovers = READUINT8(save_p);
 	savedata.lives = READSINT8(save_p);
@@ -2692,10 +2727,7 @@ static thinker_t* LoadMobjThinker(actionf_p1 thinker)
 		}
 		mobj->type = i;
 	}
-
 	mobj->info = &mobjinfo[mobj->type];
-	P_SetMobjSpawnDefaults(mobj);
-
 	if (diff & MD_POS)
 	{
 		mobj->x = READFIXED(save_p);
@@ -2721,21 +2753,35 @@ static thinker_t* LoadMobjThinker(actionf_p1 thinker)
 
 	if (diff & MD_RADIUS)
 		mobj->radius = READFIXED(save_p);
+	else
+		mobj->radius = mobj->info->radius;
 	if (diff & MD_HEIGHT)
 		mobj->height = READFIXED(save_p);
+	else
+		mobj->height = mobj->info->height;
 	if (diff & MD_FLAGS)
 		mobj->flags = READUINT32(save_p);
+	else
+		mobj->flags = mobj->info->flags;
 	if (diff & MD_FLAGS2)
 		mobj->flags2 = READUINT32(save_p);
 	if (diff & MD_HEALTH)
 		mobj->health = READINT32(save_p);
+	else
+		mobj->health = mobj->info->spawnhealth;
 	if (diff & MD_RTIME)
 		mobj->reactiontime = READINT32(save_p);
+	else
+		mobj->reactiontime = mobj->info->reactiontime;
 
 	if (diff & MD_STATE)
 		mobj->state = &states[READUINT16(save_p)];
+	else
+		mobj->state = &states[mobj->info->spawnstate];
 	if (diff & MD_TICS)
 		mobj->tics = READINT32(save_p);
+	else
+		mobj->tics = mobj->state->tics;
 	if (diff & MD_SPRITE) {
 		mobj->sprite = READUINT16(save_p);
 		if (mobj->sprite == SPR_PLAY)
@@ -2751,6 +2797,11 @@ static thinker_t* LoadMobjThinker(actionf_p1 thinker)
 		mobj->frame = READUINT32(save_p);
 		mobj->anim_duration = READUINT16(save_p);
 	}
+	else
+	{
+		mobj->frame = mobj->state->frame;
+		mobj->anim_duration = (UINT16)mobj->state->var2;
+	}
 	if (diff & MD_EFLAGS)
 		mobj->eflags = READUINT16(save_p);
 	if (diff & MD_PLAYER)
@@ -2767,14 +2818,20 @@ static thinker_t* LoadMobjThinker(actionf_p1 thinker)
 		mobj->threshold = READINT32(save_p);
 	if (diff & MD_LASTLOOK)
 		mobj->lastlook = READINT32(save_p);
+	else
+		mobj->lastlook = -1;
 	if (diff & MD_TARGET)
 		mobj->target = (mobj_t *)(size_t)READUINT32(save_p);
 	if (diff & MD_TRACER)
 		mobj->tracer = (mobj_t *)(size_t)READUINT32(save_p);
 	if (diff & MD_FRICTION)
 		mobj->friction = READFIXED(save_p);
+	else
+		mobj->friction = ORIG_FRICTION;
 	if (diff & MD_MOVEFACTOR)
 		mobj->movefactor = READFIXED(save_p);
+	else
+		mobj->movefactor = FRACUNIT;
 	if (diff & MD_FUSE)
 		mobj->fuse = READINT32(save_p);
 	if (diff & MD_WATERTOP)
@@ -2783,10 +2840,16 @@ static thinker_t* LoadMobjThinker(actionf_p1 thinker)
 		mobj->waterbottom = READFIXED(save_p);
 	if (diff & MD_SCALE)
 		mobj->scale = READFIXED(save_p);
+	else
+		mobj->scale = FRACUNIT;
 	if (diff & MD_DSCALE)
 		mobj->destscale = READFIXED(save_p);
+	else
+		mobj->destscale = mobj->scale;
 	if (diff2 & MD2_SCALESPEED)
 		mobj->scalespeed = READFIXED(save_p);
+	else
+		mobj->scalespeed = FRACUNIT/12;
 	if (diff2 & MD2_CUSVAL)
 		mobj->cusval = READINT32(save_p);
 	if (diff2 & MD2_CVMEM)
@@ -2817,10 +2880,16 @@ static thinker_t* LoadMobjThinker(actionf_p1 thinker)
 		mobj->renderflags = READUINT32(save_p);
 	if (diff2 & MD2_BLENDMODE)
 		mobj->blendmode = READINT32(save_p);
+	else
+		mobj->blendmode = AST_TRANSLUCENT;
 	if (diff2 & MD2_SPRITEXSCALE)
 		mobj->spritexscale = READFIXED(save_p);
+	else
+		mobj->spritexscale = FRACUNIT;
 	if (diff2 & MD2_SPRITEYSCALE)
 		mobj->spriteyscale = READFIXED(save_p);
+	else
+		mobj->spriteyscale = FRACUNIT;
 	if (diff2 & MD2_SPRITEXOFFSET)
 		mobj->spritexoffset = READFIXED(save_p);
 	if (diff2 & MD2_SPRITEYOFFSET)
@@ -4156,7 +4225,10 @@ static inline boolean P_NetUnArchiveMisc(boolean reloading)
 	tokenlist = READUINT32(save_p);
 
 	if (!P_LoadLevel(true, reloading))
+	{
+		CONS_Alert(CONS_ERROR, M_GetText("Can't load the level!\n"));
 		return false;
+	}
 
 	// get the time
 	leveltime = READUINT32(save_p);
@@ -4234,19 +4306,26 @@ static inline boolean P_UnArchiveLuabanksAndConsistency(void)
 {
 	switch (READUINT8(save_p))
 	{
-		case 0xb7:
+		case 0xb7: // luabanks marker
 			{
 				UINT8 i, banksinuse = READUINT8(save_p);
 				if (banksinuse > NUM_LUABANKS)
+				{
+					CONS_Alert(CONS_ERROR, M_GetText("Corrupt Luabanks! (Too many banks in use)\n"));
 					return false;
+				}
 				for (i = 0; i < banksinuse; i++)
 					luabanks[i] = READINT32(save_p);
-				if (READUINT8(save_p) != 0x1d)
+				if (READUINT8(save_p) != 0x1d) // consistency marker
+				{
+					CONS_Alert(CONS_ERROR, M_GetText("Corrupt Luabanks! (Failed consistency check)\n"));
 					return false;
+				}
 			}
-		case 0x1d:
+		case 0x1d: // consistency marker
 			break;
-		default:
+		default: // anything else is nonsense
+			CONS_Alert(CONS_ERROR, M_GetText("Failed consistency check (???)\n"));
 			return false;
 	}
 
diff --git a/src/p_saveg.h b/src/p_saveg.h
index be98953eb232198e88fb757840f9e0021fa48f2d..a909282fe55e85ce1077d43fa6e69621e2da8a02 100644
--- a/src/p_saveg.h
+++ b/src/p_saveg.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -18,6 +18,8 @@
 #pragma interface
 #endif
 
+#define NEWSKINSAVES (INT16_MAX) // Purely for backwards compatibility, remove this for 2.3
+
 // Persistent storage/archiving.
 // These are the load / save game routines.
 
diff --git a/src/p_setup.c b/src/p_setup.c
index 4229f547ab604c56bea726e9170510eac68a47ba..20734d40fc7c69db073238c5e31b69aeb86c6116 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -2486,7 +2486,7 @@ static void P_LoadMapBSP(const virtres_t *virt)
 		if (numsubsectors <= 0)
 			I_Error("Level has no subsectors (did you forget to run it through a nodesbuilder?)");
 		if (numnodes <= 0)
-			I_Error("Level has no nodes");
+			I_Error("Level has no nodes (does your map have at least 2 sectors?)");
 		if (numsegs <= 0)
 			I_Error("Level has no segs");
 
@@ -2950,6 +2950,75 @@ static void P_LinkMapData(void)
 	}
 }
 
+// For maps in binary format, add multi-tags from linedef specials. This must be done
+// before any linedef specials have been processed.
+static void P_AddBinaryMapTagsFromLine(sector_t *sector, line_t *line)
+{
+	Tag_Add(&sector->tags, Tag_FGet(&line->tags));
+	if (line->flags & ML_EFFECT6) {
+		if (sides[line->sidenum[0]].textureoffset)
+			Tag_Add(&sector->tags, (INT32)sides[line->sidenum[0]].textureoffset / FRACUNIT);
+		if (sides[line->sidenum[0]].rowoffset)
+			Tag_Add(&sector->tags, (INT32)sides[line->sidenum[0]].rowoffset / FRACUNIT);
+	}
+	if (line->flags & ML_TFERLINE) {
+		if (sides[line->sidenum[1]].textureoffset)
+			Tag_Add(&sector->tags, (INT32)sides[line->sidenum[1]].textureoffset / FRACUNIT);
+		if (sides[line->sidenum[1]].rowoffset)
+			Tag_Add(&sector->tags, (INT32)sides[line->sidenum[1]].rowoffset / FRACUNIT);
+	}
+}
+
+static void P_AddBinaryMapTags(void)
+{
+	size_t i;
+
+	for (i = 0; i < numlines; i++)
+	{
+		// 96: Apply Tag to Tagged Sectors
+		// 97: Apply Tag to Front Sector
+		// 98: Apply Tag to Back Sector
+		// 99: Apply Tag to Front and Back Sectors
+		if (lines[i].special == 96) {
+			size_t j;
+			mtag_t tag = Tag_FGet(&lines[i].frontsector->tags);
+			mtag_t target_tag = Tag_FGet(&lines[i].tags);
+			mtag_t offset_tags[4];
+			memset(offset_tags, 0, sizeof(mtag_t)*4);
+			if (lines[i].flags & ML_EFFECT6) {
+				offset_tags[0] = (INT32)sides[lines[i].sidenum[0]].textureoffset / FRACUNIT;
+				offset_tags[1] = (INT32)sides[lines[i].sidenum[0]].rowoffset / FRACUNIT;
+			}
+			if (lines[i].flags & ML_TFERLINE) {
+				offset_tags[2] = (INT32)sides[lines[i].sidenum[1]].textureoffset / FRACUNIT;
+				offset_tags[3] = (INT32)sides[lines[i].sidenum[1]].rowoffset / FRACUNIT;
+			}
+
+			for (j = 0; j < numsectors; j++) {
+				boolean matches_target_tag = Tag_Find(&sectors[j].tags, target_tag);
+				size_t k; for (k = 0; k < 4; k++) {
+					if (lines[i].flags & ML_EFFECT5) {
+						if (matches_target_tag || (offset_tags[k] && Tag_Find(&sectors[j].tags, offset_tags[k]))) {
+							Tag_Add(&sectors[j].tags, tag);
+							break;
+						}
+					} else if (matches_target_tag) {
+						if (k == 0)
+							Tag_Add(&sectors[j].tags, tag);
+						if (offset_tags[k])
+							Tag_Add(&sectors[j].tags, offset_tags[k]);
+					}
+				}
+			}
+		} else {
+			if (lines[i].special == 97 || lines[i].special == 99)
+				P_AddBinaryMapTagsFromLine(lines[i].frontsector, &lines[i]);
+			if (lines[i].special == 98 || lines[i].special == 99)
+				P_AddBinaryMapTagsFromLine(lines[i].backsector, &lines[i]);
+		}
+	}
+}
+
 //For maps in binary format, converts setup of specials to UDMF format.
 static void P_ConvertBinaryMap(void)
 {
@@ -2966,9 +3035,7 @@ static void P_ConvertBinaryMap(void)
 			INT32 check = -1;
 			INT32 paramline = -1;
 
-			TAG_ITER_DECLARECOUNTER(0);
-
-			TAG_ITER_LINES(0, tag, check)
+			TAG_ITER_LINES(tag, check)
 			{
 				if (lines[check].special == 22)
 				{
@@ -3141,6 +3208,34 @@ static void P_ConvertBinaryMap(void)
 				lines[i].args[1] = tag;
 			lines[i].special = 720;
 			break;
+		case 723: //Copy back side floor slope
+		case 724: //Copy back side ceiling slope
+		case 725: //Copy back side floor and ceiling slope
+			if (lines[i].special != 724)
+				lines[i].args[2] = tag;
+			if (lines[i].special != 723)
+				lines[i].args[3] = tag;
+			lines[i].special = 720;
+			break;
+		case 730: //Copy front side floor slope to back side
+		case 731: //Copy front side ceiling slope to back side
+		case 732: //Copy front side floor and ceiling slope to back side
+			if (lines[i].special != 731)
+				lines[i].args[4] |= TMSC_FRONTTOBACKFLOOR;
+			if (lines[i].special != 730)
+				lines[i].args[4] |= TMSC_FRONTTOBACKCEILING;
+			lines[i].special = 720;
+			break;
+		case 733: //Copy back side floor slope to front side
+		case 734: //Copy back side ceiling slope to front side
+		case 735: //Copy back side floor and ceiling slope to front side
+			if (lines[i].special != 734)
+				lines[i].args[4] |= TMSC_BACKTOFRONTFLOOR;
+			if (lines[i].special != 733)
+				lines[i].args[4] |= TMSC_BACKTOFRONTCEILING;
+			lines[i].special = 720;
+			break;
+		
 		case 900: //Translucent wall (10%)
 		case 901: //Translucent wall (20%)
 		case 902: //Translucent wall (30%)
@@ -3183,11 +3278,9 @@ static void P_ConvertBinaryMap(void)
 			INT32 firstline = -1;
 			mtag_t tag = mapthings[i].angle;
 
-			TAG_ITER_DECLARECOUNTER(0);
-
 			Tag_FSet(&mapthings[i].tags, tag);
 
-			TAG_ITER_LINES(0, tag, check)
+			TAG_ITER_LINES(tag, check)
 			{
 				if (lines[check].special == 20)
 				{
@@ -3287,6 +3380,9 @@ static boolean P_LoadMapFromFile(void)
 
 	P_LinkMapData();
 
+	if (!udmf)
+		P_AddBinaryMapTags();
+
 	Taglist_InitGlobalTables();
 
 	if (!udmf)
@@ -3394,8 +3490,10 @@ static void P_InitLevelSettings(void)
 	numstarposts = 0;
 	ssspheres = timeinmap = 0;
 
-	// special stage
-	stagefailed = true; // assume failed unless proven otherwise - P_GiveEmerald or emerald touchspecial
+	// Assume Special Stages were failed in unless proven otherwise - via P_GiveEmerald or emerald touchspecial
+	// Normal stages will default to be OK, until a Lua script / linedef executor says otherwise.
+	stagefailed = G_IsSpecialStage(gamemap);
+
 	// Reset temporary record data
 	memset(&ntemprecords, 0, sizeof(nightsdata_t));
 
@@ -4135,7 +4233,7 @@ boolean P_LoadLevel(boolean fromnetsave, boolean reloadinggamestate)
 
 #ifdef HWRENDER
 	// Free GPU textures before freeing patches.
-	if (vid.glstate == VID_GL_LIBRARY_LOADED)
+	if (rendermode == render_opengl && (vid.glstate == VID_GL_LIBRARY_LOADED))
 		HWR_ClearAllTextures();
 #endif
 
@@ -4174,7 +4272,7 @@ boolean P_LoadLevel(boolean fromnetsave, boolean reloadinggamestate)
 
 	P_ResetWaypoints();
 
-	P_MapStart();
+	P_MapStart(); // tmthing can be used starting from this point
 
 	if (!P_LoadMapFromFile())
 		return false;
@@ -4227,8 +4325,6 @@ boolean P_LoadLevel(boolean fromnetsave, boolean reloadinggamestate)
 	// clear special respawning que
 	iquehead = iquetail = 0;
 
-	P_MapEnd();
-
 	// Remove the loading shit from the screen
 	if (rendermode != render_none && !(titlemapinaction || reloadinggamestate))
 		F_WipeColorFill(levelfadecol);
@@ -4248,6 +4344,8 @@ boolean P_LoadLevel(boolean fromnetsave, boolean reloadinggamestate)
 
 	P_RunCachedActions();
 
+	P_MapEnd(); // tmthing is no longer needed from this point onwards
+
 	// Took me 3 hours to figure out why my progression kept on getting overwritten with the titlemap...
 	if (!titlemapinaction)
 	{
@@ -4271,7 +4369,9 @@ boolean P_LoadLevel(boolean fromnetsave, boolean reloadinggamestate)
 				G_CopyTiccmd(&players[i].cmd, &netcmds[buf][i], 1);
 		}
 		P_PreTicker(2);
+		P_MapStart(); // just in case MapLoad modifies tmthing
 		LUA_HookInt(gamemap, HOOK(MapLoad));
+		P_MapEnd(); // just in case MapLoad modifies tmthing
 	}
 
 	// No render mode or reloading gamestate, stop here.
@@ -4500,7 +4600,7 @@ boolean P_AddWadFile(const char *wadfilename)
 
 #ifdef HWRENDER
 	// Free GPU textures before freeing patches.
-	if (vid.glstate == VID_GL_LIBRARY_LOADED)
+	if (rendermode == render_opengl && (vid.glstate == VID_GL_LIBRARY_LOADED))
 		HWR_ClearAllTextures();
 #endif
 
@@ -4527,8 +4627,8 @@ boolean P_AddWadFile(const char *wadfilename)
 	//
 	// look for skins
 	//
-	R_AddSkins(wadnum); // faB: wadfile index in wadfiles[]
-	R_PatchSkins(wadnum); // toast: PATCH PATCH
+	R_AddSkins(wadnum, false); // faB: wadfile index in wadfiles[]
+	R_PatchSkins(wadnum, false); // toast: PATCH PATCH
 	ST_ReloadSkinFaceGraphics();
 
 	//
diff --git a/src/p_setup.h b/src/p_setup.h
index 34de9c93da1c4a91f7c46cc25af8107136df530e..9fa70d516fe1ee7a17ed29a0829302b5a4966eeb 100644
--- a/src/p_setup.h
+++ b/src/p_setup.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -80,6 +80,7 @@ typedef struct
 	UINT8 *picture;
 #ifdef HWRENDER
 	void *mipmap;
+	void *mippic;
 #endif
 } levelflat_t;
 
diff --git a/src/p_sight.c b/src/p_sight.c
index 2e1e499970418d23f5129e9271199592dbb9ce23..e4a37a718cad79397611cb36aace74ce5b06f442 100644
--- a/src/p_sight.c
+++ b/src/p_sight.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_slopes.c b/src/p_slopes.c
index aa46a84024d459e2c3dab0164d4122b59f30b126..4e93e4a45278978f6e98921d8827b65b22e887a5 100644
--- a/src/p_slopes.c
+++ b/src/p_slopes.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2004      by Stephen McGranahan
-// Copyright (C) 2015-2020 by Sonic Team Junior.
+// Copyright (C) 2015-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -546,11 +546,10 @@ static boolean P_SetSlopeFromTag(sector_t *sec, INT32 tag, boolean ceiling)
 {
 	INT32 i;
 	pslope_t **secslope = ceiling ? &sec->c_slope : &sec->f_slope;
-	TAG_ITER_DECLARECOUNTER(0);
 
 	if (!tag || *secslope)
 		return false;
-	TAG_ITER_SECTORS(0, tag, i)
+	TAG_ITER_SECTORS(tag, i)
 	{
 		pslope_t *srcslope = ceiling ? sectors[i].c_slope : sectors[i].f_slope;
 		if (srcslope)
@@ -774,13 +773,13 @@ void P_SlopeLaunch(mobj_t *mo)
 		mo->momx = slopemom.x;
 		mo->momy = slopemom.y;
 		mo->momz = slopemom.z/2;
+		
+	    if (mo->player)
+		    mo->player->powers[pw_justlaunched] = 1;
 	}
 
 	//CONS_Printf("Launched off of slope.\n");
 	mo->standingslope = NULL;
-
-	if (mo->player)
-		mo->player->powers[pw_justlaunched] = 1;
 }
 
 //
diff --git a/src/p_slopes.h b/src/p_slopes.h
index 46e8dc1e7e730dec73cfc8ffcd3aff4c4acdfeb4..ae040ae5698f1d3f29933dc412552573d1e63ab9 100644
--- a/src/p_slopes.h
+++ b/src/p_slopes.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2004      by Stephen McGranahan
-// Copyright (C) 2015-2020 by Sonic Team Junior.
+// Copyright (C) 2015-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_spec.c b/src/p_spec.c
index 008a794a9f85a9bd9e8c3cb29a8027ffc3476a68..4b566acfb7630424ac8251c2244c91a1ed5bdbe2 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -2223,7 +2223,6 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 	INT32 secnum = -1;
 	mobj_t *bot = NULL;
 	mtag_t tag = Tag_FGet(&line->tags);
-	TAG_ITER_DECLARECOUNTER(0);
 
 	I_Assert(!mo || !P_MobjWasRemoved(mo)); // If mo is there, mo must be valid!
 
@@ -2251,7 +2250,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 				newceilinglightsec = line->frontsector->ceilinglightsec;
 
 				// act on all sectors with the same tag as the triggering linedef
-				TAG_ITER_SECTORS(0, tag, secnum)
+				TAG_ITER_SECTORS(tag, secnum)
 				{
 					if (sectors[secnum].lightingdata)
 					{
@@ -2306,7 +2305,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 		case 409: // Change tagged sectors' tag
 		// (formerly "Change calling sectors' tag", but behavior was changed)
 		{
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 				Tag_SectorFSet(secnum,(INT16)(sides[line->sidenum[0]].textureoffset>>FRACBITS));
 			break;
 		}
@@ -2316,7 +2315,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 
 		case 411: // Stop floor/ceiling movement in tagged sector(s)
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 			{
 				if (sectors[secnum].floordata)
 				{
@@ -2501,7 +2500,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 						// Additionally play the sound from tagged sectors' soundorgs
 						sector_t *sec;
 
-						TAG_ITER_SECTORS(0, tag, secnum)
+						TAG_ITER_SECTORS(tag, secnum)
 						{
 							sec = &sectors[secnum];
 							S_StartSound(&sec->soundorg, sfxnum);
@@ -2616,7 +2615,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 
 		case 416: // Spawn adjustable fire flicker
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 			{
 				if (line->flags & ML_NOCLIMB && line->backsector)
 				{
@@ -2650,7 +2649,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 
 		case 417: // Spawn adjustable glowing light
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 			{
 				if (line->flags & ML_NOCLIMB && line->backsector)
 				{
@@ -2684,7 +2683,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 
 		case 418: // Spawn adjustable strobe flash (unsynchronized)
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 			{
 				if (line->flags & ML_NOCLIMB && line->backsector)
 				{
@@ -2718,7 +2717,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 
 		case 419: // Spawn adjustable strobe flash (synchronized)
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 			{
 				if (line->flags & ML_NOCLIMB && line->backsector)
 				{
@@ -2766,7 +2765,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 
 		case 421: // Stop lighting effect in tagged sectors
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 				if (sectors[secnum].lightingdata)
 				{
 					P_RemoveThinker(&((elevator_t *)sectors[secnum].lightingdata)->thinker);
@@ -2980,7 +2979,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 				ffloor_t *rover; // FOF that we are going to crumble
 				boolean foundrover = false; // for debug, "Can't find a FOF" message
 
-				TAG_ITER_SECTORS(0, sectag, secnum)
+				TAG_ITER_SECTORS(sectag, secnum)
 				{
 					sec = sectors + secnum;
 
@@ -3105,7 +3104,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			if (line->sidenum[1] != 0xffff)
 				state = (statenum_t)sides[line->sidenum[1]].toptexture;
 
-			TAG_ITER_SECTORS(0, tag, secnum)
+			TAG_ITER_SECTORS(tag, secnum)
 			{
 				boolean tryagain;
 				sec = sectors + secnum;
@@ -3165,7 +3164,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 				boolean foundrover = false; // for debug, "Can't find a FOF" message
 				ffloortype_e oldflags; // store FOF's old flags
 
-				TAG_ITER_SECTORS(0, sectag, secnum)
+				TAG_ITER_SECTORS(sectag, secnum)
 				{
 					sec = sectors + secnum;
 
@@ -3223,7 +3222,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 				if (line->flags & ML_NOCLIMB) // don't respawn!
 					respawn = false;
 
-				TAG_ITER_SECTORS(0, sectag, secnum)
+				TAG_ITER_SECTORS(sectag, secnum)
 				{
 					sec = sectors + secnum;
 
@@ -3279,7 +3278,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 					source = sectors[sourcesec].extra_colormap;
 				}
 			}
-			TAG_ITER_SECTORS(0, line->args[0], secnum)
+			TAG_ITER_SECTORS(line->args[0], secnum)
 			{
 				if (sectors[secnum].colormap_protected)
 					continue;
@@ -3414,7 +3413,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			ffloor_t *rover; // FOF that we are going to operate
 			boolean foundrover = false; // for debug, "Can't find a FOF" message
 
-			TAG_ITER_SECTORS(0, sectag, secnum)
+			TAG_ITER_SECTORS(sectag, secnum)
 			{
 				sec = sectors + secnum;
 
@@ -3478,7 +3477,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			boolean foundrover = false; // for debug, "Can't find a FOF" message
 			size_t j = 0; // sec->ffloors is saved as ffloor #0, ss->ffloors->next is #1, etc
 
-			TAG_ITER_SECTORS(0, sectag, secnum)
+			TAG_ITER_SECTORS(sectag, secnum)
 			{
 				sec = sectors + secnum;
 
@@ -3563,7 +3562,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			ffloor_t *rover; // FOF that we are going to operate
 			boolean foundrover = false; // for debug, "Can't find a FOF" message
 
-			TAG_ITER_SECTORS(0, sectag, secnum)
+			TAG_ITER_SECTORS(sectag, secnum)
 			{
 				sec = sectors + secnum;
 
@@ -3614,7 +3613,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 				}
 			}
 
-			TAG_ITER_SECTORS(0, line->args[0], secnum)
+			TAG_ITER_SECTORS(line->args[0], secnum)
 			{
 				extracolormap_t *source_exc, *dest_exc, *exc;
 
@@ -3694,7 +3693,7 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			break;
 		}
 		case 456: // Stop fade colormap
-			TAG_ITER_SECTORS(0, line->args[0], secnum)
+			TAG_ITER_SECTORS(line->args[0], secnum)
 				P_ResetColormapFader(&sectors[secnum]);
 			break;
 
@@ -3887,12 +3886,11 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 		case 465: // Set linedef executor delay
 			{
 				INT32 linenum;
-				TAG_ITER_DECLARECOUNTER(1);
 
 				if (!udmf)
 					break;
 
-				TAG_ITER_LINES(1, line->args[0], linenum)
+				TAG_ITER_LINES(line->args[0], linenum)
 				{
 					if (line->args[2])
 						lines[linenum].executordelay += line->args[1];
@@ -3902,6 +3900,21 @@ static void P_ProcessLineSpecial(line_t *line, mobj_t *mo, sector_t *callsec)
 			}
 			break;
 
+		case 466: // Set level failure state
+			{
+				if (line->flags & ML_NOCLIMB)
+				{
+					stagefailed = false;
+					CONS_Debug(DBG_GAMELOGIC, "Stage can be completed successfully!\n");
+				}
+				else
+				{
+					stagefailed = true;
+					CONS_Debug(DBG_GAMELOGIC, "Stage will end in failure...\n");
+				}
+			}
+			break;
+
 		case 480: // Polyobj_DoorSlide
 		case 481: // Polyobj_DoorSwing
 			PolyDoor(line);
@@ -5928,9 +5941,8 @@ void T_LaserFlash(laserthink_t *flash)
 	sector_t *sector;
 	sector_t *sourcesec = flash->sourceline->frontsector;
 	fixed_t top, bottom;
-	TAG_ITER_DECLARECOUNTER(0);
 
-	TAG_ITER_SECTORS(0, flash->tag, s)
+	TAG_ITER_SECTORS(flash->tag, s)
 	{
 		sector = &sectors[s];
 		for (fflr = sector->ffloors; fflr; fflr = fflr->next)
@@ -6210,11 +6222,10 @@ void P_SpawnSpecials(boolean fromnetsave)
 			INT32 s;
 			size_t sec;
 			ffloortype_e ffloorflags;
-			TAG_ITER_DECLARECOUNTER(0);
 
 			case 1: // Definable gravity per sector
 				sec = sides[*lines[i].sidenum].sector - sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 				{
 					sectors[s].gravity = &sectors[sec].floorheight; // This allows it to change in realtime!
 
@@ -6238,7 +6249,7 @@ void P_SpawnSpecials(boolean fromnetsave)
 
 			case 5: // Change camera info
 				sec = sides[*lines[i].sidenum].sector - sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_AddCameraScanner(&sectors[sec], &sectors[s], R_PointToAngle2(lines[i].v2->x, lines[i].v2->y, lines[i].v1->x, lines[i].v1->y));
 				break;
 
@@ -6265,7 +6276,7 @@ void P_SpawnSpecials(boolean fromnetsave)
 						P_ApplyFlatAlignment(lines + i, lines[i].frontsector, flatangle, xoffs, yoffs);
 					else
 					{
-						TAG_ITER_SECTORS(0, tag, s)
+						TAG_ITER_SECTORS(tag, s)
 							P_ApplyFlatAlignment(lines + i, sectors + s, flatangle, xoffs, yoffs);
 					}
 				}
@@ -6276,7 +6287,7 @@ void P_SpawnSpecials(boolean fromnetsave)
 				break;
 
 			case 8: // Sector Parameters
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 				{
 					if (lines[i].flags & ML_NOCLIMB)
 					{
@@ -6303,7 +6314,7 @@ void P_SpawnSpecials(boolean fromnetsave)
 				break;
 
 			case 10: // Vertical culling plane for sprites and FOFs
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					sectors[s].cullheight = &lines[i]; // This allows it to change in realtime!
 				break;
 
@@ -6364,19 +6375,19 @@ void P_SpawnSpecials(boolean fromnetsave)
 
 			case 63: // support for drawn heights coming from different sector
 				sec = sides[*lines[i].sidenum].sector-sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					sectors[s].heightsec = (INT32)sec;
 				break;
 
 			case 64: // Appearing/Disappearing FOF option
 				if (lines[i].flags & ML_BLOCKMONSTERS) { // Find FOFs by control sector tag
-					TAG_ITER_SECTORS(0, tag, s)
+					TAG_ITER_SECTORS(tag, s)
 						for (j = 0; (unsigned)j < sectors[s].linecount; j++)
 							if (sectors[s].lines[j]->special >= 100 && sectors[s].lines[j]->special < 300)
 								Add_MasterDisappearer(abs(lines[i].dx>>FRACBITS), abs(lines[i].dy>>FRACBITS), abs(sides[lines[i].sidenum[0]].sector->floorheight>>FRACBITS), (INT32)(sectors[s].lines[j]-lines), (INT32)i);
 				} else // Find FOFs by effect sector tag
 				{
-					TAG_ITER_LINES(0, tag, s)
+					TAG_ITER_LINES(tag, s)
 					{
 						if ((size_t)s == i)
 							continue;
@@ -6387,15 +6398,15 @@ void P_SpawnSpecials(boolean fromnetsave)
 				break;
 
 			case 66: // Displace floor by front sector
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_AddPlaneDisplaceThinker(pd_floor, P_AproxDistance(lines[i].dx, lines[i].dy)>>8, sides[lines[i].sidenum[0]].sector-sectors, s, !!(lines[i].flags & ML_NOCLIMB));
 				break;
 			case 67: // Displace ceiling by front sector
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_AddPlaneDisplaceThinker(pd_ceiling, P_AproxDistance(lines[i].dx, lines[i].dy)>>8, sides[lines[i].sidenum[0]].sector-sectors, s, !!(lines[i].flags & ML_NOCLIMB));
 				break;
 			case 68: // Displace both floor AND ceiling by front sector
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_AddPlaneDisplaceThinker(pd_both, P_AproxDistance(lines[i].dx, lines[i].dy)>>8, sides[lines[i].sidenum[0]].sector-sectors, s, !!(lines[i].flags & ML_NOCLIMB));
 				break;
 
@@ -6991,46 +7002,46 @@ void P_SpawnSpecials(boolean fromnetsave)
 
 			case 600: // floor lighting independently (e.g. lava)
 				sec = sides[*lines[i].sidenum].sector-sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					sectors[s].floorlightsec = (INT32)sec;
 				break;
 
 			case 601: // ceiling lighting independently
 				sec = sides[*lines[i].sidenum].sector-sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					sectors[s].ceilinglightsec = (INT32)sec;
 				break;
 
 			case 602: // Adjustable pulsating light
 				sec = sides[*lines[i].sidenum].sector - sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_SpawnAdjustableGlowingLight(&sectors[sec], &sectors[s],
 						P_AproxDistance(lines[i].dx, lines[i].dy)>>FRACBITS);
 				break;
 
 			case 603: // Adjustable flickering light
 				sec = sides[*lines[i].sidenum].sector - sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_SpawnAdjustableFireFlicker(&sectors[sec], &sectors[s],
 						P_AproxDistance(lines[i].dx, lines[i].dy)>>FRACBITS);
 				break;
 
 			case 604: // Adjustable Blinking Light (unsynchronized)
 				sec = sides[*lines[i].sidenum].sector - sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_SpawnAdjustableStrobeFlash(&sectors[sec], &sectors[s],
 						abs(lines[i].dx)>>FRACBITS, abs(lines[i].dy)>>FRACBITS, false);
 				break;
 
 			case 605: // Adjustable Blinking Light (synchronized)
 				sec = sides[*lines[i].sidenum].sector - sectors;
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					P_SpawnAdjustableStrobeFlash(&sectors[sec], &sectors[s],
 						abs(lines[i].dx)>>FRACBITS, abs(lines[i].dy)>>FRACBITS, true);
 				break;
 
 			case 606: // HACK! Copy colormaps. Just plain colormaps.
-				TAG_ITER_SECTORS(0, lines[i].args[0], s)
+				TAG_ITER_SECTORS(lines[i].args[0], s)
 				{
 					extracolormap_t *exc;
 
@@ -7104,13 +7115,12 @@ void P_SpawnSpecials(boolean fromnetsave)
   */
 static void P_AddFakeFloorsByLine(size_t line, ffloortype_e ffloorflags, thinkerlist_t *secthinkers)
 {
-	TAG_ITER_DECLARECOUNTER(0);
 	INT32 s;
 	mtag_t tag = Tag_FGet(&lines[line].tags);
 	size_t sec = sides[*lines[line].sidenum].sector-sectors;
 
 	line_t* li = lines + line;
-	TAG_ITER_SECTORS(0, tag, s)
+	TAG_ITER_SECTORS(tag, s)
 		P_AddFakeFloor(&sectors[s], &sectors[sec], li, ffloorflags, secthinkers);
 }
 
@@ -7220,7 +7230,6 @@ void T_Scroll(scroll_t *s)
 		size_t i;
 		INT32 sect;
 		ffloor_t *rover;
-		TAG_ITER_DECLARECOUNTER(0);
 
 		case sc_side: // scroll wall texture
 			side = sides + s->affectee;
@@ -7257,7 +7266,7 @@ void T_Scroll(scroll_t *s)
 				if (!is3dblock)
 					continue;
 
-				TAG_ITER_SECTORS(0, Tag_FGet(&line->tags), sect)
+				TAG_ITER_SECTORS(Tag_FGet(&line->tags), sect)
 				{
 					sector_t *psec;
 					psec = sectors + sect;
@@ -7332,7 +7341,7 @@ void T_Scroll(scroll_t *s)
 
 				if (!is3dblock)
 					continue;
-				TAG_ITER_SECTORS(0, Tag_FGet(&line->tags), sect)
+				TAG_ITER_SECTORS(Tag_FGet(&line->tags), sect)
 				{
 					sector_t *psec;
 					psec = sectors + sect;
@@ -7472,11 +7481,10 @@ static void P_SpawnScrollers(void)
 		switch (special)
 		{
 			register INT32 s;
-			TAG_ITER_DECLARECOUNTER(0);
 
 			case 513: // scroll effect ceiling
 			case 533: // scroll and carry objects on ceiling
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Scroller(sc_ceiling, -dx, dy, control, s, accel, l->flags & ML_NOCLIMB);
 				if (special != 533)
 					break;
@@ -7485,13 +7493,13 @@ static void P_SpawnScrollers(void)
 			case 523:	// carry objects on ceiling
 				dx = FixedMul(dx, CARRYFACTOR);
 				dy = FixedMul(dy, CARRYFACTOR);
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Scroller(sc_carry_ceiling, dx, dy, control, s, accel, l->flags & ML_NOCLIMB);
 				break;
 
 			case 510: // scroll effect floor
 			case 530: // scroll and carry objects on floor
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Scroller(sc_floor, -dx, dy, control, s, accel, l->flags & ML_NOCLIMB);
 				if (special != 530)
 					break;
@@ -7500,7 +7508,7 @@ static void P_SpawnScrollers(void)
 			case 520:	// carry objects on floor
 				dx = FixedMul(dx, CARRYFACTOR);
 				dy = FixedMul(dy, CARRYFACTOR);
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Scroller(sc_carry, dx, dy, control, s, accel, l->flags & ML_NOCLIMB);
 				break;
 
@@ -7508,7 +7516,7 @@ static void P_SpawnScrollers(void)
 			// (same direction and speed as scrolling floors)
 			case 502:
 			{
-				TAG_ITER_LINES(0, tag, s)
+				TAG_ITER_LINES(tag, s)
 					if (s != (INT32)i)
 					{
 						if (l->flags & ML_EFFECT2) // use texture offsets instead
@@ -7610,9 +7618,8 @@ void T_Disappear(disappear_t *d)
 		ffloor_t *rover;
 		register INT32 s;
 		mtag_t afftag = Tag_FGet(&lines[d->affectee].tags);
-		TAG_ITER_DECLARECOUNTER(0);
 
-		TAG_ITER_SECTORS(0, afftag, s)
+		TAG_ITER_SECTORS(afftag, s)
 		{
 			for (rover = sectors[s].ffloors; rover; rover = rover->next)
 			{
@@ -8343,7 +8350,6 @@ static void P_SpawnFriction(void)
 	fixed_t strength; // frontside texture offset controls magnitude
 	fixed_t friction; // friction value to be applied during movement
 	INT32 movefactor; // applied to each player move to simulate inertia
-	TAG_ITER_DECLARECOUNTER(0);
 
 	for (i = 0; i < numlines; i++, l++)
 		if (l->special == 540)
@@ -8369,7 +8375,7 @@ static void P_SpawnFriction(void)
 			else
 				movefactor = FRACUNIT;
 
-			TAG_ITER_SECTORS(0, tag, s)
+			TAG_ITER_SECTORS(tag, s)
 				Add_Friction(friction, movefactor, s, -1);
 		}
 }
@@ -8458,6 +8464,9 @@ static inline boolean PIT_PushThing(mobj_t *thing)
 	if (thing->player && thing->player->powers[pw_carry] == CR_ROPEHANG)
 		return false;
 
+	if (!tmpusher->source)
+		return false;
+
 	// Allow this to affect pushable objects at some point?
 	if (thing->player && (!(thing->flags & (MF_NOGRAVITY | MF_NOCLIP)) || thing->player->powers[pw_carry] == CR_NIGHTSMODE))
 	{
@@ -8888,7 +8897,6 @@ static void P_SpawnPushers(void)
 	mtag_t tag;
 	register INT32 s;
 	mobj_t *thing;
-	TAG_ITER_DECLARECOUNTER(0);
 
 	for (i = 0; i < numlines; i++, l++)
 	{
@@ -8896,15 +8904,15 @@ static void P_SpawnPushers(void)
 		switch (l->special)
 		{
 			case 541: // wind
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Pusher(p_wind, l->dx, l->dy, NULL, s, -1, l->flags & ML_NOCLIMB, l->flags & ML_EFFECT4);
 				break;
 			case 544: // current
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Pusher(p_current, l->dx, l->dy, NULL, s, -1, l->flags & ML_NOCLIMB, l->flags & ML_EFFECT4);
 				break;
 			case 547: // push/pull
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 				{
 					thing = P_GetPushThing(s);
 					if (thing) // No MT_P* means no effect
@@ -8912,19 +8920,19 @@ static void P_SpawnPushers(void)
 				}
 				break;
 			case 545: // current up
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Pusher(p_upcurrent, l->dx, l->dy, NULL, s, -1, l->flags & ML_NOCLIMB, l->flags & ML_EFFECT4);
 				break;
 			case 546: // current down
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Pusher(p_downcurrent, l->dx, l->dy, NULL, s, -1, l->flags & ML_NOCLIMB, l->flags & ML_EFFECT4);
 				break;
 			case 542: // wind up
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Pusher(p_upwind, l->dx, l->dy, NULL, s, -1, l->flags & ML_NOCLIMB, l->flags & ML_EFFECT4);
 				break;
 			case 543: // wind down
-				TAG_ITER_SECTORS(0, tag, s)
+				TAG_ITER_SECTORS(tag, s)
 					Add_Pusher(p_downwind, l->dx, l->dy, NULL, s, -1, l->flags & ML_NOCLIMB, l->flags & ML_EFFECT4);
 				break;
 		}
diff --git a/src/p_spec.h b/src/p_spec.h
index bba7c4a40a090084cce1f9738dc414c5a0c1c013..3b8abfcf8a099ee3bcb4f442d016f83c315b065f 100644
--- a/src/p_spec.h
+++ b/src/p_spec.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_telept.c b/src/p_telept.c
index f6feddf4b513a2cb356baca7d60c160c465d9605..6bac5ad208e54f795288925342adb1becb05e021 100644
--- a/src/p_telept.c
+++ b/src/p_telept.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_tick.c b/src/p_tick.c
index 0f342daf1d2ec3dfc71d2e9d5f5965ed25906d1e..d7357eb828508b49cc60b9e6d80beedab282982c 100644
--- a/src/p_tick.c
+++ b/src/p_tick.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_tick.h b/src/p_tick.h
index 1fb88f3f20a33f3319fd29af2634c2dd46a88417..ae481c6a2aa10df64f680f33aca97b43b5b13bc6 100644
--- a/src/p_tick.h
+++ b/src/p_tick.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/p_user.c b/src/p_user.c
index 6ab74869dc8f6cb9eda7fb849a0eca127b5d7d9c..2b773c84a082179fe0f7adb67f4880a5309aa8a5 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -190,7 +190,7 @@ fixed_t P_ReturnThrustY(mobj_t *mo, angle_t angle, fixed_t move)
 boolean P_AutoPause(void)
 {
 	// Don't pause even on menu-up or focus-lost in netgames or record attack
-	if (netgame || modeattacking || gamestate == GS_TITLESCREEN)
+	if (netgame || modeattacking || gamestate == GS_TITLESCREEN || (marathonmode && gamestate == GS_INTERMISSION))
 		return false;
 
 	return (menuactive || ( window_notinfocus && cv_pauseifunfocused.value ));
@@ -1111,7 +1111,7 @@ boolean P_PlayerCanDamage(player_t *player, mobj_t *thing)
 		return false;
 
 	{
-		UINT8 shouldCollide = LUA_HookPlayerCanDamage(player, thing);
+		UINT8 shouldCollide = LUAh_PlayerCanDamage(player, thing);
 		if (P_MobjWasRemoved(thing))
 			return false; // removed???
 		if (shouldCollide == 1)
@@ -1594,7 +1594,7 @@ boolean P_EvaluateMusicStatus(UINT16 status, const char *musname)
 				break;
 
 			case JT_OTHER:  // Other state
-				result = LUA_HookShouldJingleContinue(&players[i], musname);
+				result = LUAh_ShouldJingleContinue(&players[i], musname);
 				break;
 
 			case JT_NONE:   // Null state
@@ -1860,7 +1860,7 @@ void P_SpawnShieldOrb(player_t *player)
 		I_Error("P_SpawnShieldOrb: player->mo is NULL!\n");
 #endif
 
-	if (LUA_HookPlayer(player, HOOK(ShieldSpawn)))
+	if (LUAh_ShieldSpawn(player))
 		return;
 
 	if (player->powers[pw_shield] & SH_FORCE)
@@ -2016,6 +2016,8 @@ mobj_t *P_SpawnGhostMobj(mobj_t *mobj)
 {
 	mobj_t *ghost = P_SpawnMobj(mobj->x, mobj->y, mobj->z, MT_GHOST);
 
+	P_SetTarget(&ghost->target, mobj);
+
 	P_SetScale(ghost, mobj->scale);
 	ghost->destscale = mobj->scale;
 
@@ -4499,7 +4501,7 @@ void P_DoJump(player_t *player, boolean soundandstate)
 	if (twodlevel || (player->mo->flags2 & MF2_TWOD))
 		factor += player->jumpfactor / 10;
 
-	if (player->charflags & SF_MULTIABILITY && player->charability == CA_DOUBLEJUMP)
+	if (player->charflags & SF_MULTIABILITY && player->charability == CA_DOUBLEJUMP && (player->actionspd >> FRACBITS) != -1)
 		factor -= max(0, player->secondjump * player->jumpfactor / ((player->actionspd >> FRACBITS) + 1)); // Reduce the jump height each time
 
 	//if (maptol & TOL_NIGHTS)
@@ -4581,7 +4583,7 @@ static void P_DoSpinAbility(player_t *player, ticcmd_t *cmd)
 
 	if (cmd->buttons & BT_SPIN)
 	{
-		if (LUA_HookPlayer(player, HOOK(SpinSpecial)))
+		if (LUAh_SpinSpecial(player))
 			return;
 	}
 
@@ -4880,22 +4882,28 @@ void P_DoBubbleBounce(player_t *player)
 //
 void P_DoAbilityBounce(player_t *player, boolean changemomz)
 {
-	fixed_t prevmomz;
 	if (player->mo->state-states == S_PLAY_BOUNCE_LANDING)
 		return;
+
 	if (changemomz)
 	{
-		fixed_t minmomz;
-		prevmomz = player->mo->momz;
+		fixed_t prevmomz = player->mo->momz, minmomz;
+
 		if (P_MobjFlip(player->mo)*prevmomz < 0)
 			prevmomz = 0;
 		else if (player->mo->eflags & MFE_UNDERWATER)
 			prevmomz /= 2;
+
 		P_DoJump(player, false);
 		player->pflags &= ~(PF_STARTJUMP|PF_JUMPED);
 		minmomz = FixedMul(player->mo->momz, 3*FRACUNIT/2);
-		player->mo->momz = max(minmomz, (minmomz + prevmomz)/2);
+
+		if (player->mo->eflags & MFE_VERTICALFLIP) // Use "min" or "max" depending on if the player is flipped
+			player->mo->momz = min(minmomz, (minmomz + prevmomz)/2);
+		else
+			player->mo->momz = max(minmomz, (minmomz + prevmomz)/2);
 	}
+
 	S_StartSound(player->mo, sfx_boingf);
 	P_SetPlayerMobjState(player->mo, S_PLAY_BOUNCE_LANDING);
 	player->pflags |= PF_BOUNCING|PF_THOKKED;
@@ -5047,7 +5055,7 @@ static boolean P_PlayerShieldThink(player_t *player, ticcmd_t *cmd, mobj_t *lock
 				}
 			}
 		}
-		if ((!(player->charflags & SF_NOSHIELDABILITY)) && (cmd->buttons & BT_SPIN && !LUA_HookPlayer(player, HOOK(ShieldSpecial)))) // Spin button effects
+		if ((!(player->charflags & SF_NOSHIELDABILITY)) && (cmd->buttons & BT_SPIN && !LUAh_ShieldSpecial(player))) // Spin button effects
 		{
 			// Force stop
 			if ((player->powers[pw_shield] & ~(SH_FORCEHP|SH_STACK)) == SH_FORCE)
@@ -5171,7 +5179,7 @@ static void P_DoJumpStuff(player_t *player, ticcmd_t *cmd)
 				// and you don't have a shield, do it!
 				P_DoSuperTransformation(player, false);
 			}
-			else if (!LUA_HookPlayer(player, HOOK(JumpSpinSpecial)))
+			else if (!LUAh_JumpSpinSpecial(player))
 				switch (player->charability)
 				{
 					case CA_THOK:
@@ -5244,7 +5252,7 @@ static void P_DoJumpStuff(player_t *player, ticcmd_t *cmd)
 
 	if (cmd->buttons & BT_JUMP && !player->exiting && !P_PlayerInPain(player))
 	{
-		if (LUA_HookPlayer(player, HOOK(JumpSpecial)))
+		if (LUAh_JumpSpecial(player))
 			;
 		// all situations below this require jump button not to be pressed already
 		else if (player->pflags & PF_JUMPDOWN)
@@ -5279,7 +5287,7 @@ static void P_DoJumpStuff(player_t *player, ticcmd_t *cmd)
 		}*/
 		else if (player->pflags & PF_JUMPED)
 		{
-			if (!LUA_HookPlayer(player, HOOK(AbilitySpecial)))
+			if (!LUAh_AbilitySpecial(player))
 			switch (player->charability)
 			{
 				case CA_THOK:
@@ -5293,7 +5301,7 @@ static void P_DoJumpStuff(player_t *player, ticcmd_t *cmd)
 						fixed_t actionspd = player->actionspd;
 
 						if (player->charflags & SF_DASHMODE)
-							actionspd = max(player->normalspeed, FixedDiv(player->speed, player->mo->scale));
+							actionspd = max(player->actionspd, FixedDiv(player->speed, player->mo->scale));
 
 						if (player->mo->eflags & MFE_UNDERWATER)
 							actionspd >>= 1;
@@ -5472,7 +5480,7 @@ static void P_DoJumpStuff(player_t *player, ticcmd_t *cmd)
 		}
 		else if (player->pflags & PF_THOKKED)
 		{
-			if (!LUA_HookPlayer(player, HOOK(AbilitySpecial)))
+			if (!LUAh_AbilitySpecial(player))
 				switch (player->charability)
 				{
 					case CA_FLY:
@@ -5495,7 +5503,7 @@ static void P_DoJumpStuff(player_t *player, ticcmd_t *cmd)
 						break;
 				}
 		}
-		else if ((!(player->charflags & SF_NOSHIELDABILITY)) && ((player->powers[pw_shield] & SH_NOSTACK) == SH_WHIRLWIND && !player->powers[pw_super] && !LUA_HookPlayer(player, HOOK(ShieldSpecial))))
+		else if ((!(player->charflags & SF_NOSHIELDABILITY)) && ((player->powers[pw_shield] & SH_NOSTACK) == SH_WHIRLWIND && !player->powers[pw_super] && !LUAh_ShieldSpecial(player)))
 			P_DoJumpShield(player);
 	}
 
@@ -5924,7 +5932,7 @@ static void P_3dMovement(player_t *player)
 	player->rmomy = player->mo->momy - player->cmomy;
 
 	// Calculates player's speed based on distance-of-a-line formula
-	player->speed = R_PointToDist2(0, 0, player->rmomx, player->rmomy);
+	player->speed = P_AproxDistance(player->rmomx, player->rmomy);
 
 	// Monster Iestyn - 04-11-13
 	// Quadrants are stupid, excessive and broken, let's do this a much simpler way!
@@ -8645,14 +8653,16 @@ void P_MovePlayer(player_t *player)
 	{
 		boolean atspinheight = false;
 		fixed_t oldheight = player->mo->height;
+		fixed_t luaheight = LUAh_PlayerHeight(player);
 
+		if (luaheight != -1)
+		{
+			player->mo->height = luaheight;
+			if (luaheight <= P_GetPlayerSpinHeight(player))
+				atspinheight = true; // spinning will not save you from being crushed
+		}
 		// Less height while spinning. Good for spinning under things...?
-		if ((player->mo->state == &states[player->mo->info->painstate])
-		|| ((player->pflags & PF_JUMPED) && !(player->pflags & PF_NOJUMPDAMAGE))
-		|| (player->pflags & PF_SPINNING)
-		|| player->powers[pw_tailsfly] || player->pflags & PF_GLIDING
-		|| (player->charability == CA_GLIDEANDCLIMB && player->mo->state-states == S_PLAY_GLIDE_LANDING)
-		|| (player->charability == CA_FLY && player->mo->state-states == S_PLAY_FLY_TIRED))
+		else if (P_PlayerShouldUseSpinHeight(player))
 		{
 			player->mo->height = P_GetPlayerSpinHeight(player);
 			atspinheight = true;
@@ -9009,8 +9019,11 @@ void P_NukeEnemies(mobj_t *inflictor, mobj_t *source, fixed_t radius)
 		if (mo->type == MT_MINUS && !(mo->flags & (MF_SPECIAL|MF_SHOOTABLE)))
 			mo->flags = (mo->flags & ~MF_NOCLIPTHING)|MF_SPECIAL|MF_SHOOTABLE;
 
-		if (mo->type == MT_EGGGUARD && mo->tracer) //nuke Egg Guard's shield!
+		if (mo->type == MT_EGGGUARD && mo->tracer) // Egg Guard's shield needs to be removed if it has one!
+		{
 			P_KillMobj(mo->tracer, inflictor, source, DMG_NUKE);
+			P_KillMobj(mo, inflictor, source, DMG_NUKE);
+		}
 
 		if (mo->flags & MF_BOSS || mo->type == MT_PLAYER) //don't OHKO bosses nor players!
 			P_DamageMobj(mo, inflictor, source, 1, DMG_NUKE);
@@ -10502,7 +10515,7 @@ boolean P_SpectatorJoinGame(player_t *player)
 		else
 			changeto = (P_RandomFixed() & 1) + 1;
 
-		if (!LUA_HookTeamSwitch(player, changeto, true, false, false))
+		if (!LUAh_TeamSwitch(player, changeto, true, false, false))
 			return false;
 
 		if (player->mo)
@@ -10519,7 +10532,7 @@ boolean P_SpectatorJoinGame(player_t *player)
 		{
 			// Call ViewpointSwitch hooks here.
 			// The viewpoint was forcibly changed.
-			LUA_HookViewpointSwitch(player, &players[consoleplayer], true);
+			LUAh_ViewpointSwitch(player, &players[consoleplayer], true);
 			displayplayer = consoleplayer;
 		}
 
@@ -10537,7 +10550,7 @@ boolean P_SpectatorJoinGame(player_t *player)
 		// respawn in place and sit there for the rest of the round.
 		if (!((gametyperules & GTR_HIDEFROZEN) && leveltime > (hidetime * TICRATE)))
 		{
-			if (!LUA_HookTeamSwitch(player, 3, true, false, false))
+			if (!LUAh_TeamSwitch(player, 3, true, false, false))
 				return false;
 			if (player->mo)
 			{
@@ -10564,7 +10577,7 @@ boolean P_SpectatorJoinGame(player_t *player)
 			{
 				// Call ViewpointSwitch hooks here.
 				// The viewpoint was forcibly changed.
-				LUA_HookViewpointSwitch(player, &players[consoleplayer], true);
+				LUAh_ViewpointSwitch(player, &players[consoleplayer], true);
 				displayplayer = consoleplayer;
 			}
 
@@ -11355,8 +11368,9 @@ static void P_DoMetalJetFume(player_t *player, mobj_t *fume)
 	mobj_t *mo = player->mo;
 	angle_t angle = player->drawangle;
 	fixed_t dist;
+	fixed_t heightoffset = ((mo->eflags & MFE_VERTICALFLIP) ? mo->height - (P_GetPlayerHeight(player) >> 1) : (P_GetPlayerHeight(player) >> 1));
 	panim_t panim = player->panim;
-	tic_t dashmode = player->dashmode;
+	tic_t dashmode = min(player->dashmode, DASHMODE_MAX);
 	boolean underwater = mo->eflags & MFE_UNDERWATER;
 	statenum_t stat = fume->state-states;
 
@@ -11388,7 +11402,7 @@ static void P_DoMetalJetFume(player_t *player, mobj_t *fume)
 				offsetV = i*P_ReturnThrustY(fume, fume->movedir, radiusV);
 				x = mo->x + radiusX + FixedMul(offsetH, factorX);
 				y = mo->y + radiusY + FixedMul(offsetH, factorY);
-				z = mo->z + (mo->height >> 1) + offsetV;
+				z = mo->z + heightoffset + offsetV;
 				P_SpawnMobj(x, y, z, MT_SMALLBUBBLE)->scale = mo->scale >> 1;
 			}
 
@@ -11451,7 +11465,7 @@ static void P_DoMetalJetFume(player_t *player, mobj_t *fume)
 	P_UnsetThingPosition(fume);
 	fume->x = mo->x + P_ReturnThrustX(fume, angle, dist);
 	fume->y = mo->y + P_ReturnThrustY(fume, angle, dist);
-	fume->z = mo->z + ((mo->height - fume->height) >> 1);
+	fume->z = mo->z + heightoffset - (fume->height >> 1);
 	P_SetThingPosition(fume);
 
 	// If dashmode is high enough, spawn a trail
@@ -11489,7 +11503,7 @@ void P_PlayerThink(player_t *player)
 		}
 		if (player->playerstate == PST_REBORN)
 		{
-			LUA_HookPlayer(player, HOOK(PlayerThink));
+			LUAh_PlayerThink(player);
 			return;
 		}
 	}
@@ -11591,7 +11605,7 @@ void P_PlayerThink(player_t *player)
 
 			if (player->playerstate == PST_DEAD)
 			{
-				LUA_HookPlayer(player, HOOK(PlayerThink));
+				LUAh_PlayerThink(player);
 				return;
 			}
 		}
@@ -11712,7 +11726,7 @@ void P_PlayerThink(player_t *player)
 	{
 		player->mo->flags2 &= ~MF2_SHADOW;
 		P_DeathThink(player);
-		LUA_HookPlayer(player, HOOK(PlayerThink));
+		LUAh_PlayerThink(player);
 		return;
 	}
 
@@ -11754,7 +11768,7 @@ void P_PlayerThink(player_t *player)
 	{
 		if (P_SpectatorJoinGame(player))
 		{
-			LUA_HookPlayer(player, HOOK(PlayerThink));
+			LUAh_PlayerThink(player);
 			return; // player->mo was removed.
 		}
 	}
@@ -11859,7 +11873,7 @@ void P_PlayerThink(player_t *player)
 
 	if (!player->mo)
 	{
-		LUA_HookPlayer(player, HOOK(PlayerThink));
+		LUAh_PlayerThink(player);
 		return; // P_MovePlayer removed player->mo.
 	}
 
@@ -12313,7 +12327,7 @@ void P_PlayerThink(player_t *player)
 	}
 #undef dashmode
 
-	LUA_HookPlayer(player, HOOK(PlayerThink));
+	LUAh_PlayerThink(player);
 
 /*
 //	Colormap verification
@@ -12608,14 +12622,14 @@ void P_PlayerAfterThink(player_t *player)
 				if (P_AproxDistance(player->mo->x - tails->x, player->mo->y - tails->y) > player->mo->radius)
 					player->powers[pw_carry] = CR_NONE;
 
-				if (player->powers[pw_carry] != CR_NONE)
+				if (player->powers[pw_carry] == CR_PLAYER)
 				{
 					if (player->mo->state-states != S_PLAY_RIDE)
 						P_SetPlayerMobjState(player->mo, S_PLAY_RIDE);
 					if (tails->player && (tails->skin && ((skin_t *)(tails->skin))->sprites[SPR2_SWIM].numframes) && (tails->eflags & MFE_UNDERWATER))
 						tails->player->powers[pw_tailsfly] = 0;
 				}
-				else
+				else if (player->powers[pw_carry] == CR_NONE)
 					P_SetTarget(&player->mo->tracer, NULL);
 
 				if (player-players == consoleplayer && botingame)
@@ -12718,9 +12732,15 @@ void P_PlayerAfterThink(player_t *player)
 
 				if (player->cmd.forwardmove || player->cmd.sidemove)
 				{
-					rock->movedir = (player->cmd.angleturn << FRACBITS) + R_PointToAngle2(0, 0, player->cmd.forwardmove << FRACBITS, -player->cmd.sidemove << FRACBITS);
+					rock->flags2 |= MF2_STRONGBOX; // signifies the rock should not slow to a halt
+					if (twodlevel || (mo->flags2 & MF2_TWOD))
+						rock->movedir = mo->angle;
+					else
+						rock->movedir = (player->cmd.angleturn << FRACBITS) + R_PointToAngle2(0, 0, player->cmd.forwardmove << FRACBITS, -player->cmd.sidemove << FRACBITS);
 					P_Thrust(rock, rock->movedir, rock->scale >> 1);
 				}
+				else
+					rock->flags2 &= ~MF2_STRONGBOX;
 
 				mo->momx = rock->momx;
 				mo->momy = rock->momy;
@@ -12736,7 +12756,7 @@ void P_PlayerAfterThink(player_t *player)
 					mo->tics = walktics;
 				}
 
-				P_TeleportMove(player->mo, rock->x, rock->y, rock->z + rock->height);
+				P_TeleportMove(player->mo, rock->x, rock->y, rock->z + ((mo->eflags & MFE_VERTICALFLIP) ? -mo->height : rock->height));
 				break;
 			}
 			case CR_PTERABYTE: // being carried by a Pterabyte
@@ -12876,7 +12896,7 @@ void P_PlayerAfterThink(player_t *player)
 
 		if (player->followmobj)
 		{
-			if (LUA_HookFollowMobj(player, player->followmobj) || P_MobjWasRemoved(player->followmobj))
+			if (LUAh_FollowMobj(player, player->followmobj) || P_MobjWasRemoved(player->followmobj))
 				{;}
 			else
 			{
@@ -12947,3 +12967,37 @@ boolean P_PlayerFullbright(player_t *player)
 			|| !(player->mo->state >= &states[S_PLAY_NIGHTS_TRANS1]
 			&& player->mo->state < &states[S_PLAY_NIGHTS_TRANS6])))); // Note the < instead of <=
 }
+
+#define JUMPCURLED(player) ((player->pflags & PF_JUMPED)\
+	&& (!(player->charflags & SF_NOJUMPSPIN))\
+	&& (player->panim == PA_JUMP || player->panim == PA_ROLL))\
+
+// returns true if the player can enter a sector that they could not if standing at their skin's full height
+boolean P_PlayerCanEnterSpinGaps(player_t *player)
+{
+	UINT8 canEnter = LUAh_PlayerCanEnterSpinGaps(player);
+	if (canEnter == 1)
+		return true;
+	else if (canEnter == 2)
+		return false;
+
+	return ((player->pflags & (PF_SPINNING|PF_SLIDING|PF_GLIDING)) // players who are spinning, sliding, or gliding
+		|| (player->charability == CA_GLIDEANDCLIMB && player->mo->state-states == S_PLAY_GLIDE_LANDING) // players who are landing from a glide
+		|| ((player->charflags & (SF_DASHMODE|SF_MACHINE)) == (SF_DASHMODE|SF_MACHINE)
+			&& player->dashmode >= DASHMODE_THRESHOLD && player->mo->state-states == S_PLAY_DASH) // machine players in dashmode
+		|| JUMPCURLED(player)); // players who are jumpcurled, but only if they would normally jump that way
+}
+
+// returns true if the player should use their skin's spinheight instead of their skin's height
+boolean P_PlayerShouldUseSpinHeight(player_t *player)
+{
+	return ((player->pflags & (PF_SPINNING|PF_SLIDING|PF_GLIDING))
+		|| (player->mo->state == &states[player->mo->info->painstate])
+		|| (player->panim == PA_ROLL)
+		|| ((player->powers[pw_tailsfly] || (player->charability == CA_FLY && player->mo->state-states == S_PLAY_FLY_TIRED))
+			&& !(player->charflags & SF_NOJUMPSPIN))
+		|| (player->charability == CA_GLIDEANDCLIMB && player->mo->state-states == S_PLAY_GLIDE_LANDING)
+		|| ((player->charflags & (SF_DASHMODE|SF_MACHINE)) == (SF_DASHMODE|SF_MACHINE)
+			&& player->dashmode >= DASHMODE_THRESHOLD && player->mo->state-states == S_PLAY_DASH)
+		|| JUMPCURLED(player));
+}
diff --git a/src/r_bsp.c b/src/r_bsp.c
index 6f2a90d2d5e6c8642b4dc0eded0d47afb189012b..5acd4e70c5fa083eaf675055be9d623e15f014e3 100644
--- a/src/r_bsp.c
+++ b/src/r_bsp.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_bsp.h b/src/r_bsp.h
index e2da8ebaf54e2226140ee008897d0eefb2432751..40d24ffece796beb2fcdb1cd2cb5289ad30206ed 100644
--- a/src/r_bsp.h
+++ b/src/r_bsp.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_data.c b/src/r_data.c
index af672f6dc024ee2c6840818982d586b17ceacb07..2cfe9cb7ace3139d40a32a9d8dd0ba21afa9b794 100644
--- a/src/r_data.c
+++ b/src/r_data.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -30,10 +30,6 @@
 #include "byteptr.h"
 #include "dehacked.h"
 
-#ifdef _WIN32
-#include <malloc.h> // alloca(sizeof)
-#endif
-
 //
 // Graphics.
 // SRB2 graphics for walls and sprites
diff --git a/src/r_data.h b/src/r_data.h
index aec52b54b654bb874215097e3e508b9ea5609bab..571fdc54f0a20e795f97704e6a2ef173bb6fdb82 100644
--- a/src/r_data.h
+++ b/src/r_data.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_defs.h b/src/r_defs.h
index 9c649fbc4508bf148787566eb6692f6111d24706..1be3a1b8cdce5f365acc957c7087ab7a7cc9c331 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_draw.c b/src/r_draw.c
index d9ea942a2f22b301bdbd1762e0635f31ba085d6e..f0a19a462848d02c54b07a8a481f11e0969ebef0 100644
--- a/src/r_draw.c
+++ b/src/r_draw.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -25,6 +25,7 @@
 #include "w_wad.h"
 #include "z_zone.h"
 #include "console.h" // Until buffering gets finished
+#include "libdivide.h" // used by NPO2 tilted span functions
 
 #ifdef HWRENDER
 #include "hardware/hw_main.h"
@@ -134,19 +135,51 @@ UINT32 nflatxshift, nflatyshift, nflatshiftup, nflatmask;
 #define DEFAULT_STARTTRANSCOLOR 96
 #define NUM_PALETTE_ENTRIES 256
 
-static UINT8** translationtablecache[MAXSKINS + 7] = {NULL};
+static UINT8 **translationtablecache[MAXSKINS + 7] = {NULL};
 UINT8 skincolor_modified[MAXSKINCOLORS];
 
-CV_PossibleValue_t Color_cons_t[MAXSKINCOLORS+1];
+static INT32 SkinToCacheIndex(INT32 skinnum)
+{
+	switch (skinnum)
+	{
+		case TC_DEFAULT:    return DEFAULT_TT_CACHE_INDEX;
+		case TC_BOSS:       return BOSS_TT_CACHE_INDEX;
+		case TC_METALSONIC: return METALSONIC_TT_CACHE_INDEX;
+		case TC_ALLWHITE:   return ALLWHITE_TT_CACHE_INDEX;
+		case TC_RAINBOW:    return RAINBOW_TT_CACHE_INDEX;
+		case TC_BLINK:      return BLINK_TT_CACHE_INDEX;
+		case TC_DASHMODE:   return DASHMODE_TT_CACHE_INDEX;
+		     default:       break;
+	}
 
-#define TRANSTAB_AMTMUL10 (256.0f / 10.0f)
+	return skinnum;
+}
+
+static INT32 CacheIndexToSkin(INT32 ttc)
+{
+	switch (ttc)
+	{
+		case DEFAULT_TT_CACHE_INDEX:    return TC_DEFAULT;
+		case BOSS_TT_CACHE_INDEX:       return TC_BOSS;
+		case METALSONIC_TT_CACHE_INDEX: return TC_METALSONIC;
+		case ALLWHITE_TT_CACHE_INDEX:   return TC_ALLWHITE;
+		case RAINBOW_TT_CACHE_INDEX:    return TC_RAINBOW;
+		case BLINK_TT_CACHE_INDEX:      return TC_BLINK;
+		case DASHMODE_TT_CACHE_INDEX:   return TC_DASHMODE;
+		     default:                   break;
+	}
+
+	return ttc;
+}
+
+CV_PossibleValue_t Color_cons_t[MAXSKINCOLORS+1];
 
 /** \brief Initializes the translucency tables used by the Software renderer.
 */
 void R_InitTranslucencyTables(void)
 {
-	// Load here the transparency lookup tables 'TINTTAB'
-	// NOTE: the TINTTAB resource MUST BE aligned on 64k for the asm
+	// Load here the transparency lookup tables 'TRANSx0'
+	// NOTE: the TRANSx0 resources MUST BE aligned on 64k for the asm
 	// optimised code (in other words, transtables pointer low word is 0)
 	transtables = Z_MallocAlign(NUMTRANSTABLES*0x10000, PU_STATIC,
 		NULL, 16);
@@ -164,42 +197,43 @@ void R_InitTranslucencyTables(void)
 	R_GenerateBlendTables();
 }
 
-void R_GenerateBlendTables(void)
+static colorlookup_t transtab_lut;
+
+static void BlendTab_Translucent(UINT8 *table, int style, UINT8 blendamt)
 {
-	INT32 i;
+	INT16 bg, fg;
 
-	for (i = 0; i < NUMBLENDMAPS; i++)
-	{
-		if (i == blendtab_modulate)
-			continue;
-		blendtables[i] = Z_MallocAlign((NUMTRANSTABLES + 1) * 0x10000, PU_STATIC, NULL, 16);
-	}
+	if (table == NULL)
+		I_Error("BlendTab_Translucent: input table was NULL!");
 
-	for (i = 0; i <= 9; i++)
+	for (bg = 0; bg < 0xFF; bg++)
 	{
-		const size_t offs = (0x10000 * i);
-		const UINT8 alpha = TRANSTAB_AMTMUL10 * i;
+		for (fg = 0; fg < 0xFF; fg++)
+		{
+			RGBA_t backrgba = V_GetMasterColor(bg);
+			RGBA_t frontrgba = V_GetMasterColor(fg);
+			RGBA_t result;
 
-		R_GenerateTranslucencyTable(blendtables[blendtab_add] + offs, AST_ADD, alpha);
-		R_GenerateTranslucencyTable(blendtables[blendtab_subtract] + offs, AST_SUBTRACT, alpha);
-		R_GenerateTranslucencyTable(blendtables[blendtab_reversesubtract] + offs, AST_REVERSESUBTRACT, alpha);
-	}
+			result.rgba = ASTBlendPixel(backrgba, frontrgba, style, 0xFF);
+			result.rgba = ASTBlendPixel(result, frontrgba, AST_TRANSLUCENT, blendamt);
 
-	// Modulation blending only requires a single table
-	blendtables[blendtab_modulate] = Z_MallocAlign(0x10000, PU_STATIC, NULL, 16);
-	R_GenerateTranslucencyTable(blendtables[blendtab_modulate], AST_MODULATE, 0);
+			table[((bg * 0x100) + fg)] = GetColorLUT(&transtab_lut, result.s.red, result.s.green, result.s.blue);
+		}
+	}
 }
 
-static colorlookup_t transtab_lut;
-
-void R_GenerateTranslucencyTable(UINT8 *table, int style, UINT8 blendamt)
+static void BlendTab_Subtractive(UINT8 *table, int style, UINT8 blendamt)
 {
 	INT16 bg, fg;
 
 	if (table == NULL)
-		I_Error("R_GenerateTranslucencyTable: input table was NULL!");
+		I_Error("BlendTab_Subtractive: input table was NULL!");
 
-	InitColorLUT(&transtab_lut, pMasterPalette, false);
+	if (blendamt == 0xFF)
+	{
+		memset(table, GetColorLUT(&transtab_lut, 0, 0, 0), 0x10000);
+		return;
+	}
 
 	for (bg = 0; bg < 0xFF; bg++)
 	{
@@ -209,12 +243,94 @@ void R_GenerateTranslucencyTable(UINT8 *table, int style, UINT8 blendamt)
 			RGBA_t frontrgba = V_GetMasterColor(fg);
 			RGBA_t result;
 
-			result.rgba = ASTBlendPixel(backrgba, frontrgba, style, blendamt);
+			result.rgba = ASTBlendPixel(backrgba, frontrgba, style, 0xFF);
+			result.s.red = max(0, result.s.red - blendamt);
+			result.s.green = max(0, result.s.green - blendamt);
+			result.s.blue = max(0, result.s.blue - blendamt);
+
+			table[((bg * 0x100) + fg)] = GetColorLUT(&transtab_lut, result.s.red, result.s.green, result.s.blue);
+		}
+	}
+}
+
+static void BlendTab_Modulative(UINT8 *table)
+{
+	INT16 bg, fg;
+
+	if (table == NULL)
+		I_Error("BlendTab_Modulative: input table was NULL!");
+
+	for (bg = 0; bg < 0xFF; bg++)
+	{
+		for (fg = 0; fg < 0xFF; fg++)
+		{
+			RGBA_t backrgba = V_GetMasterColor(bg);
+			RGBA_t frontrgba = V_GetMasterColor(fg);
+			RGBA_t result;
+			result.rgba = ASTBlendPixel(backrgba, frontrgba, AST_MODULATE, 0);
 			table[((bg * 0x100) + fg)] = GetColorLUT(&transtab_lut, result.s.red, result.s.green, result.s.blue);
 		}
 	}
 }
 
+static INT32 BlendTab_Count[NUMBLENDMAPS] =
+{
+	NUMTRANSTABLES+1, // blendtab_add
+	NUMTRANSTABLES+1, // blendtab_subtract
+	NUMTRANSTABLES+1, // blendtab_reversesubtract
+	1                 // blendtab_modulate
+};
+
+static INT32 BlendTab_FromStyle[] =
+{
+	0,                        // AST_COPY
+	0,                        // AST_TRANSLUCENT
+	blendtab_add,             // AST_ADD
+	blendtab_subtract,        // AST_SUBTRACT
+	blendtab_reversesubtract, // AST_REVERSESUBTRACT
+	blendtab_modulate,        // AST_MODULATE
+	0                         // AST_OVERLAY
+};
+
+static void BlendTab_GenerateMaps(INT32 tab, INT32 style, void (*genfunc)(UINT8 *, int, UINT8))
+{
+	INT32 i = 0, num = BlendTab_Count[tab];
+	const float amtmul = (256.0f / (float)(NUMTRANSTABLES + 1));
+	for (; i < num; i++)
+	{
+		const size_t offs = (0x10000 * i);
+		const UINT16 alpha = min(amtmul * i, 0xFF);
+		genfunc(blendtables[tab] + offs, style, alpha);
+	}
+}
+
+void R_GenerateBlendTables(void)
+{
+	INT32 i;
+
+	for (i = 0; i < NUMBLENDMAPS; i++)
+		blendtables[i] = Z_MallocAlign(BlendTab_Count[i] * 0x10000, PU_STATIC, NULL, 16);
+
+	InitColorLUT(&transtab_lut, pMasterPalette, false);
+
+	// Additive
+	BlendTab_GenerateMaps(blendtab_add, AST_ADD, BlendTab_Translucent);
+
+	// Subtractive
+#if 1
+	BlendTab_GenerateMaps(blendtab_subtract, AST_SUBTRACT, BlendTab_Subtractive);
+#else
+	BlendTab_GenerateMaps(blendtab_subtract, AST_SUBTRACT, BlendTab_Translucent);
+#endif
+
+	// Reverse subtractive
+	BlendTab_GenerateMaps(blendtab_reversesubtract, AST_REVERSESUBTRACT, BlendTab_Translucent);
+
+	// Modulative blending only requires a single table
+	BlendTab_Modulative(blendtables[blendtab_modulate]);
+}
+
+#define ClipBlendLevel(style, trans) max(min((trans), BlendTab_Count[BlendTab_FromStyle[style]]-1), 0)
 #define ClipTransLevel(trans) max(min((trans), NUMTRANSMAPS-2), 0)
 
 UINT8 *R_GetTranslucencyTable(INT32 alphalevel)
@@ -224,7 +340,12 @@ UINT8 *R_GetTranslucencyTable(INT32 alphalevel)
 
 UINT8 *R_GetBlendTable(int style, INT32 alphalevel)
 {
-	size_t offs = (ClipTransLevel(alphalevel) << FF_TRANSSHIFT);
+	size_t offs;
+
+	if (style <= AST_COPY || style >= AST_OVERLAY)
+		return NULL;
+
+	offs = (ClipBlendLevel(style, alphalevel) << FF_TRANSSHIFT);
 
 	// Lactozilla: Returns the equivalent to AST_TRANSLUCENT
 	// if no alpha style matches any of the blend tables.
@@ -249,6 +370,14 @@ UINT8 *R_GetBlendTable(int style, INT32 alphalevel)
 		return NULL;
 }
 
+boolean R_BlendLevelVisible(INT32 blendmode, INT32 alphalevel)
+{
+	if (blendmode <= AST_COPY || blendmode == AST_SUBTRACT || blendmode == AST_MODULATE || blendmode >= AST_OVERLAY)
+		return true;
+
+	return (alphalevel < BlendTab_Count[BlendTab_FromStyle[blendmode]]);
+}
+
 // Define for getting accurate color brightness readings according to how the human eye sees them.
 // https://en.wikipedia.org/wiki/Relative_luminance
 // 0.2126 to red
@@ -308,7 +437,7 @@ static void R_RainbowColormap(UINT8 *dest_colormap, UINT16 skincolor)
 /**	\brief	Generates a translation colormap.
 
 	\param	dest_colormap	colormap to populate
-	\param	skinnum		number of skin, TC_DEFAULT or TC_BOSS
+	\param	skinnum		skin number, or a translation mode
 	\param	color		translation color
 
 	\return	void
@@ -353,8 +482,12 @@ static void R_GenerateTranslationColormap(UINT8 *dest_colormap, INT32 skinnum, U
 		// White!
 		if (skinnum == TC_BOSS)
 		{
+			UINT8 *originalColormap = R_GetTranslationColormap(TC_DEFAULT, (skincolornum_t)color, GTC_CACHE);
 			for (i = 0; i < 16; i++)
+			{
+				dest_colormap[DEFAULT_STARTTRANSCOLOR + i] = originalColormap[DEFAULT_STARTTRANSCOLOR + i];
 				dest_colormap[31-i] = i;
+			}
 		}
 		else if (skinnum == TC_METALSONIC)
 		{
@@ -412,6 +545,9 @@ static void R_GenerateTranslationColormap(UINT8 *dest_colormap, INT32 skinnum, U
 	if (color >= numskincolors)
 		I_Error("Invalid skin color #%hu.", (UINT16)color);
 
+	if (skinnum < 0 && skinnum > TC_DEFAULT)
+		I_Error("Invalid translation colormap index %d.", skinnum);
+
 	starttranscolor = (skinnum != TC_DEFAULT) ? skins[skinnum].starttranscolor : DEFAULT_STARTTRANSCOLOR;
 
 	if (starttranscolor >= NUM_PALETTE_ENTRIES)
@@ -448,25 +584,11 @@ static void R_GenerateTranslationColormap(UINT8 *dest_colormap, INT32 skinnum, U
 UINT8* R_GetTranslationColormap(INT32 skinnum, skincolornum_t color, UINT8 flags)
 {
 	UINT8* ret;
-	INT32 skintableindex;
+	INT32 skintableindex = SkinToCacheIndex(skinnum); // Adjust if we want the default colormap
 	INT32 i;
 
-	// Adjust if we want the default colormap
-	switch (skinnum)
-	{
-		case TC_DEFAULT:    skintableindex = DEFAULT_TT_CACHE_INDEX; break;
-		case TC_BOSS:       skintableindex = BOSS_TT_CACHE_INDEX; break;
-		case TC_METALSONIC: skintableindex = METALSONIC_TT_CACHE_INDEX; break;
-		case TC_ALLWHITE:   skintableindex = ALLWHITE_TT_CACHE_INDEX; break;
-		case TC_RAINBOW:    skintableindex = RAINBOW_TT_CACHE_INDEX; break;
-		case TC_BLINK:      skintableindex = BLINK_TT_CACHE_INDEX; break;
-		case TC_DASHMODE:   skintableindex = DASHMODE_TT_CACHE_INDEX; break;
-		     default:       skintableindex = skinnum; break;
-	}
-
 	if (flags & GTC_CACHE)
 	{
-
 		// Allocate table for skin if necessary
 		if (!translationtablecache[skintableindex])
 			translationtablecache[skintableindex] = Z_Calloc(MAXSKINCOLORS * sizeof(UINT8**), PU_STATIC, NULL);
@@ -479,7 +601,8 @@ UINT8* R_GetTranslationColormap(INT32 skinnum, skincolornum_t color, UINT8 flags
 		{
 			for (i = 0; i < (INT32)(sizeof(translationtablecache) / sizeof(translationtablecache[0])); i++)
 				if (translationtablecache[i] && translationtablecache[i][color])
-					R_GenerateTranslationColormap(translationtablecache[i][color], i>=MAXSKINS ? MAXSKINS-i-1 : i, color);
+					R_GenerateTranslationColormap(translationtablecache[i][color], CacheIndexToSkin(i), color);
+
 			skincolor_modified[color] = false;
 		}
 	}
diff --git a/src/r_draw.h b/src/r_draw.h
index d1eb83033884742adc0c3d75f5325868f6bc29e1..2173c7a5a36e5c9b92063657aa833dbb5b457726 100644
--- a/src/r_draw.h
+++ b/src/r_draw.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -140,11 +140,12 @@ extern UINT8 *blendtables[NUMBLENDMAPS];
 
 void R_InitTranslucencyTables(void);
 void R_GenerateBlendTables(void);
-void R_GenerateTranslucencyTable(UINT8 *table, int style, UINT8 blendamt);
 
 UINT8 *R_GetTranslucencyTable(INT32 alphalevel);
 UINT8 *R_GetBlendTable(int style, INT32 alphalevel);
 
+boolean R_BlendLevelVisible(INT32 blendmode, INT32 alphalevel);
+
 // Color ramp modification should force a recache
 extern UINT8 skincolor_modified[];
 
@@ -176,7 +177,7 @@ void R_Draw2sMultiPatchTranslucentColumn_8(void);
 void R_DrawFogColumn_8(void);
 void R_DrawColumnShadowed_8(void);
 
-#define PLANELIGHTFLOAT (BASEVIDWIDTH * BASEVIDWIDTH / vid.width / (zeroheight - FIXED_TO_FLOAT(viewz)) / 21.0f * FIXED_TO_FLOAT(fovtan))
+#define PLANELIGHTFLOAT (BASEVIDWIDTH * BASEVIDWIDTH / vid.width / zeroheight / 21.0f * FIXED_TO_FLOAT(fovtan))
 
 void R_DrawSpan_8(void);
 void R_DrawTranslucentSpan_8(void);
diff --git a/src/r_draw16.c b/src/r_draw16.c
index 8b1d29e8d6557dd8f7e556e68964ba67e77ac3b0..1a2fed77316b6fd80c6b91f5d1357e1b47eee99f 100644
--- a/src/r_draw16.c
+++ b/src/r_draw16.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_draw8.c b/src/r_draw8.c
index e78ba8a6c49b8f39a9c54fe0af814340c9462641..b8a63d5c042d7ce49f8480bac269b763c43f5dd6 100644
--- a/src/r_draw8.c
+++ b/src/r_draw8.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -693,8 +693,8 @@ void R_DrawTiltedSpan_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 
@@ -726,8 +726,8 @@ void R_DrawTiltedSpan_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
@@ -763,8 +763,8 @@ void R_DrawTiltedSpan_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
@@ -826,8 +826,8 @@ void R_DrawTiltedTranslucentSpan_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 		*dest = *(ds_transmap + (colormap[source[((v >> nflatyshift) & nflatmask) | (u >> nflatxshift)]] << 8) + *dest);
@@ -858,8 +858,8 @@ void R_DrawTiltedTranslucentSpan_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
@@ -895,8 +895,8 @@ void R_DrawTiltedTranslucentSpan_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
@@ -960,8 +960,8 @@ void R_DrawTiltedTranslucentWaterSpan_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 		*dest = *(ds_transmap + (colormap[source[((v >> nflatyshift) & nflatmask) | (u >> nflatxshift)]] << 8) + *dsrc++);
@@ -992,8 +992,8 @@ void R_DrawTiltedTranslucentWaterSpan_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
@@ -1029,8 +1029,8 @@ void R_DrawTiltedTranslucentWaterSpan_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
@@ -1091,8 +1091,8 @@ void R_DrawTiltedSplat_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 
@@ -1127,8 +1127,8 @@ void R_DrawTiltedSplat_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
@@ -1168,8 +1168,8 @@ void R_DrawTiltedSplat_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
@@ -1227,8 +1227,9 @@ void R_DrawSplat_8 (void)
 		// need!
 		//
 		// <Callum> 4194303 = (2048x2048)-1 (2048x2048 is maximum flat size)
+		// Why decimal? 0x3FFFFF == 4194303... ~Golden
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[0] = colormap[val];
@@ -1236,7 +1237,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[1] = colormap[val];
@@ -1244,7 +1245,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[2] = colormap[val];
@@ -1252,7 +1253,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[3] = colormap[val];
@@ -1260,7 +1261,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[4] = colormap[val];
@@ -1268,7 +1269,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[5] = colormap[val];
@@ -1276,7 +1277,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[6] = colormap[val];
@@ -1284,7 +1285,7 @@ void R_DrawSplat_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
+		val &= 0x3FFFFF;
 		val = source[val];
 		if (val != TRANSPARENTPIXEL)
 			dest[7] = colormap[val];
@@ -1447,10 +1448,7 @@ void R_DrawFloorSprite_8 (void)
 		// SoM: Why didn't I see this earlier? the spot variable is a waste now because we don't
 		// have the uber complicated math to calculate it now, so that was a memory write we didn't
 		// need!
-		//
-		// <Callum> 4194303 = (2048x2048)-1 (2048x2048 is maximum flat size)
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[0] = colormap[translation[val & 0xFF]];
@@ -1458,7 +1456,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[1] = colormap[translation[val & 0xFF]];
@@ -1466,7 +1463,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[2] = colormap[translation[val & 0xFF]];
@@ -1474,7 +1470,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[3] = colormap[translation[val & 0xFF]];
@@ -1482,7 +1477,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[4] = colormap[translation[val & 0xFF]];
@@ -1490,7 +1484,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[5] = colormap[translation[val & 0xFF]];
@@ -1498,7 +1491,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[6] = colormap[translation[val & 0xFF]];
@@ -1506,7 +1498,6 @@ void R_DrawFloorSprite_8 (void)
 		yposition += ystep;
 
 		val = (((UINT32)yposition >> nflatyshift) & nflatmask) | ((UINT32)xposition >> nflatxshift);
-		val &= 4194303;
 		val = source[val];
 		if (val & 0xFF00)
 			dest[7] = colormap[translation[val & 0xFF]];
@@ -1682,8 +1673,8 @@ void R_DrawTiltedFloorSprite_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
@@ -1722,8 +1713,8 @@ void R_DrawTiltedFloorSprite_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
@@ -1791,8 +1782,8 @@ void R_DrawTiltedTranslucentFloorSprite_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
@@ -1831,8 +1822,8 @@ void R_DrawTiltedTranslucentFloorSprite_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
diff --git a/src/r_draw8_npo2.c b/src/r_draw8_npo2.c
index a34a20e9a9737241bbc183d71f8bae01a982cb7a..71ec999486497c562214620fcd0510219daf2ce0 100644
--- a/src/r_draw8_npo2.c
+++ b/src/r_draw8_npo2.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -106,6 +106,9 @@ void R_DrawTiltedSpan_NPO2_8(void)
 	double endz, endu, endv;
 	UINT32 stepu, stepv;
 
+	struct libdivide_u32_t x_divider = libdivide_u32_gen(ds_flatwidth);
+	struct libdivide_u32_t y_divider = libdivide_u32_gen(ds_flatheight);
+
 	iz = ds_szp->z + ds_szp->y*(centery-ds_y) + ds_szp->x*(ds_x1-centerx);
 
 	// Lighting is simple. It's just linear interpolation from start to end
@@ -133,24 +136,25 @@ void R_DrawTiltedSpan_NPO2_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 
 		// Lactozilla: Non-powers-of-two
 		{
-			fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-			fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+			fixed_t x = (((fixed_t)u) >> FRACBITS);
+			fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 			// Carefully align all of my Friends.
 			if (x < 0)
-				x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+				x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+			else
+				x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 			if (y < 0)
-				y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-			x %= ds_flatwidth;
-			y %= ds_flatheight;
+				y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+			else
+				y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 			*dest = colormap[source[((y * ds_flatwidth) + x)]];
 		}
@@ -181,25 +185,26 @@ void R_DrawTiltedSpan_NPO2_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				*dest = colormap[source[((y * ds_flatwidth) + x)]];
 			}
@@ -220,17 +225,18 @@ void R_DrawTiltedSpan_NPO2_8(void)
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				*dest = colormap[source[((y * ds_flatwidth) + x)]];
 			}
@@ -248,25 +254,26 @@ void R_DrawTiltedSpan_NPO2_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
 				colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 				// Lactozilla: Non-powers-of-two
 				{
-					fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-					fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+					fixed_t x = (((fixed_t)u) >> FRACBITS);
+					fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 					// Carefully align all of my Friends.
 					if (x < 0)
-						x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+						x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+					else
+						x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 					if (y < 0)
-						y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-					x %= ds_flatwidth;
-					y %= ds_flatheight;
+						y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+					else
+						y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 					*dest = colormap[source[((y * ds_flatwidth) + x)]];
 				}
@@ -299,6 +306,9 @@ void R_DrawTiltedTranslucentSpan_NPO2_8(void)
 	double endz, endu, endv;
 	UINT32 stepu, stepv;
 
+	struct libdivide_u32_t x_divider = libdivide_u32_gen(ds_flatwidth);
+	struct libdivide_u32_t y_divider = libdivide_u32_gen(ds_flatheight);
+
 	iz = ds_szp->z + ds_szp->y*(centery-ds_y) + ds_szp->x*(ds_x1-centerx);
 
 	// Lighting is simple. It's just linear interpolation from start to end
@@ -326,23 +336,24 @@ void R_DrawTiltedTranslucentSpan_NPO2_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 		// Lactozilla: Non-powers-of-two
 		{
-			fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-			fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+			fixed_t x = (((fixed_t)u) >> FRACBITS);
+			fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 			// Carefully align all of my Friends.
 			if (x < 0)
-				x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+				x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+			else
+				x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 			if (y < 0)
-				y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-			x %= ds_flatwidth;
-			y %= ds_flatheight;
+				y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+			else
+				y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 			*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dest);
 		}
@@ -373,25 +384,26 @@ void R_DrawTiltedTranslucentSpan_NPO2_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dest);
 			}
@@ -412,17 +424,18 @@ void R_DrawTiltedTranslucentSpan_NPO2_8(void)
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dest);
 			}
@@ -440,25 +453,26 @@ void R_DrawTiltedTranslucentSpan_NPO2_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
 				colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 				// Lactozilla: Non-powers-of-two
 				{
-					fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-					fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+					fixed_t x = (((fixed_t)u) >> FRACBITS);
+					fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 					// Carefully align all of my Friends.
 					if (x < 0)
-						x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+						x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+					else
+						x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 					if (y < 0)
-						y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-					x %= ds_flatwidth;
-					y %= ds_flatheight;
+						y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+					else
+						y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 					*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dest);
 				}
@@ -490,6 +504,9 @@ void R_DrawTiltedSplat_NPO2_8(void)
 	double endz, endu, endv;
 	UINT32 stepu, stepv;
 
+	struct libdivide_u32_t x_divider = libdivide_u32_gen(ds_flatwidth);
+	struct libdivide_u32_t y_divider = libdivide_u32_gen(ds_flatheight);
+
 	iz = ds_szp->z + ds_szp->y*(centery-ds_y) + ds_szp->x*(ds_x1-centerx);
 
 	// Lighting is simple. It's just linear interpolation from start to end
@@ -517,24 +534,25 @@ void R_DrawTiltedSplat_NPO2_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 
 		// Lactozilla: Non-powers-of-two
 		{
-			fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-			fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+			fixed_t x = (((fixed_t)u) >> FRACBITS);
+			fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 			// Carefully align all of my Friends.
 			if (x < 0)
-				x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+				x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+			else
+				x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 			if (y < 0)
-				y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-			x %= ds_flatwidth;
-			y %= ds_flatheight;
+				y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+			else
+				y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 			val = source[((y * ds_flatwidth) + x)];
 		}
@@ -569,25 +587,26 @@ void R_DrawTiltedSplat_NPO2_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				val = source[((y * ds_flatwidth) + x)];
 			}
@@ -610,17 +629,18 @@ void R_DrawTiltedSplat_NPO2_8(void)
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				val = source[((y * ds_flatwidth) + x)];
 			}
@@ -640,8 +660,8 @@ void R_DrawTiltedSplat_NPO2_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
@@ -649,17 +669,18 @@ void R_DrawTiltedSplat_NPO2_8(void)
 				val = source[((v >> nflatyshift) & nflatmask) | (u >> nflatxshift)];
 				// Lactozilla: Non-powers-of-two
 				{
-					fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-					fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+					fixed_t x = (((fixed_t)u) >> FRACBITS);
+					fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 					// Carefully align all of my Friends.
 					if (x < 0)
-						x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+						x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+					else
+						x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 					if (y < 0)
-						y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-					x %= ds_flatwidth;
-					y %= ds_flatheight;
+						y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+					else
+						y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 					val = source[((y * ds_flatwidth) + x)];
 				}
@@ -1002,14 +1023,14 @@ void R_DrawTiltedFloorSprite_NPO2_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
 			// Lactozilla: Non-powers-of-two
-			fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-			fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+			fixed_t x = (((fixed_t)u) >> FRACBITS);
+			fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 			// Carefully align all of my Friends.
 			if (x < 0)
@@ -1040,8 +1061,8 @@ void R_DrawTiltedFloorSprite_NPO2_8(void)
 			v = (INT64)(startv);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
@@ -1070,14 +1091,14 @@ void R_DrawTiltedFloorSprite_NPO2_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
 				// Lactozilla: Non-powers-of-two
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
@@ -1152,14 +1173,14 @@ void R_DrawTiltedTranslucentFloorSprite_NPO2_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
 			// Lactozilla: Non-powers-of-two
-			fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-			fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+			fixed_t x = (((fixed_t)u) >> FRACBITS);
+			fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 			// Carefully align all of my Friends.
 			if (x < 0)
@@ -1190,8 +1211,8 @@ void R_DrawTiltedTranslucentFloorSprite_NPO2_8(void)
 			v = (INT64)(startv);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
@@ -1220,14 +1241,14 @@ void R_DrawTiltedTranslucentFloorSprite_NPO2_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
 				// Lactozilla: Non-powers-of-two
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
@@ -1401,6 +1422,9 @@ void R_DrawTiltedTranslucentWaterSpan_NPO2_8(void)
 	double endz, endu, endv;
 	UINT32 stepu, stepv;
 
+	struct libdivide_u32_t x_divider = libdivide_u32_gen(ds_flatwidth);
+	struct libdivide_u32_t y_divider = libdivide_u32_gen(ds_flatheight);
+
 	iz = ds_szp->z + ds_szp->y*(centery-ds_y) + ds_szp->x*(ds_x1-centerx);
 
 	// Lighting is simple. It's just linear interpolation from start to end
@@ -1429,23 +1453,24 @@ void R_DrawTiltedTranslucentWaterSpan_NPO2_8(void)
 	do
 	{
 		double z = 1.f/iz;
-		u = (INT64)(uz*z) + viewx;
-		v = (INT64)(vz*z) + viewy;
+		u = (INT64)(uz*z);
+		v = (INT64)(vz*z);
 
 		colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 		// Lactozilla: Non-powers-of-two
 		{
-			fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-			fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+			fixed_t x = (((fixed_t)u) >> FRACBITS);
+			fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 			// Carefully align all of my Friends.
 			if (x < 0)
-				x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+				x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+			else
+				x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 			if (y < 0)
-				y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-			x %= ds_flatwidth;
-			y %= ds_flatheight;
+				y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+			else
+				y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 			*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dsrc++);
 		}
@@ -1476,25 +1501,26 @@ void R_DrawTiltedTranslucentWaterSpan_NPO2_8(void)
 		endv = vz*endz;
 		stepu = (INT64)((endu - startu) * INVSPAN);
 		stepv = (INT64)((endv - startv) * INVSPAN);
-		u = (INT64)(startu) + viewx;
-		v = (INT64)(startv) + viewy;
+		u = (INT64)(startu);
+		v = (INT64)(startv);
 
 		for (i = SPANSIZE-1; i >= 0; i--)
 		{
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dsrc++);
 			}
@@ -1515,17 +1541,18 @@ void R_DrawTiltedTranslucentWaterSpan_NPO2_8(void)
 			colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 			// Lactozilla: Non-powers-of-two
 			{
-				fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-				fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+				fixed_t x = (((fixed_t)u) >> FRACBITS);
+				fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 				// Carefully align all of my Friends.
 				if (x < 0)
-					x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+					x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+				else
+					x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 				if (y < 0)
-					y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-				x %= ds_flatwidth;
-				y %= ds_flatheight;
+					y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+				else
+					y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 				*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dsrc++);
 			}
@@ -1543,25 +1570,26 @@ void R_DrawTiltedTranslucentWaterSpan_NPO2_8(void)
 			left = 1.f/left;
 			stepu = (INT64)((endu - startu) * left);
 			stepv = (INT64)((endv - startv) * left);
-			u = (INT64)(startu) + viewx;
-			v = (INT64)(startv) + viewy;
+			u = (INT64)(startu);
+			v = (INT64)(startv);
 
 			for (; width != 0; width--)
 			{
 				colormap = planezlight[tiltlighting[ds_x1++]] + (ds_colormap - colormaps);
 				// Lactozilla: Non-powers-of-two
 				{
-					fixed_t x = (((fixed_t)u-viewx) >> FRACBITS);
-					fixed_t y = (((fixed_t)v-viewy) >> FRACBITS);
+					fixed_t x = (((fixed_t)u) >> FRACBITS);
+					fixed_t y = (((fixed_t)v) >> FRACBITS);
 
 					// Carefully align all of my Friends.
 					if (x < 0)
-						x = ds_flatwidth - ((UINT32)(ds_flatwidth - x) % ds_flatwidth);
+						x += (libdivide_u32_do((UINT32)(-x-1), &x_divider) + 1) * ds_flatwidth;
+					else
+						x -= libdivide_u32_do((UINT32)x, &x_divider) * ds_flatwidth;
 					if (y < 0)
-						y = ds_flatheight - ((UINT32)(ds_flatheight - y) % ds_flatheight);
-
-					x %= ds_flatwidth;
-					y %= ds_flatheight;
+						y += (libdivide_u32_do((UINT32)(-y-1), &y_divider) + 1) * ds_flatheight;
+					else
+						y -= libdivide_u32_do((UINT32)y, &y_divider) * ds_flatheight;
 
 					*dest = *(ds_transmap + (colormap[source[((y * ds_flatwidth) + x)]] << 8) + *dsrc++);
 				}
diff --git a/src/r_local.h b/src/r_local.h
index 4ccb766cf72c903a952b75c85d2a1f313c42ebd5..ba78ea87dbae64b69864e8afcbd05915113e6af5 100644
--- a/src/r_local.h
+++ b/src/r_local.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_main.c b/src/r_main.c
index f82fb589e03bb58f50b04dffd1c10779fda7dc25..17e124cb9271c714a115e37705ee6ec11ed60faa 100644
--- a/src/r_main.c
+++ b/src/r_main.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -955,7 +955,7 @@ void R_ExecuteSetViewSize(void)
 		j = viewheight*16;
 		for (i = 0; i < j; i++)
 		{
-			dy = ((i - viewheight*8)<<FRACBITS) + FRACUNIT/2;
+			dy = (i - viewheight*8)<<FRACBITS;
 			dy = FixedMul(abs(dy), fovtan);
 			yslopetab[i] = FixedDiv(centerx*FRACUNIT, dy);
 		}
@@ -1089,8 +1089,6 @@ subsector_t *R_PointInSubsectorOrNull(fixed_t x, fixed_t y)
 // 18/08/18: (No it's actually 16*viewheight, thanks Jimita for finding this out)
 static void R_SetupFreelook(player_t *player, boolean skybox)
 {
-	INT32 dy = 0;
-
 #ifndef HWRENDER
 	(void)player;
 	(void)skybox;
@@ -1109,14 +1107,15 @@ static void R_SetupFreelook(player_t *player, boolean skybox)
 		G_SoftwareClipAimingPitch((INT32 *)&aimingangle);
 	}
 
+	centeryfrac = (viewheight/2)<<FRACBITS;
+
 	if (rendermode == render_soft)
-	{
-		dy = (AIMINGTODY(aimingangle)>>FRACBITS) * viewwidth/BASEVIDWIDTH;
-		yslope = &yslopetab[viewheight*8 - (viewheight/2 + dy)];
-	}
+		centeryfrac += FixedMul(AIMINGTODY(aimingangle), FixedDiv(viewwidth<<FRACBITS, BASEVIDWIDTH<<FRACBITS));
 
-	centery = (viewheight/2) + dy;
-	centeryfrac = centery<<FRACBITS;
+	centery = FixedInt(FixedRound(centeryfrac));
+
+	if (rendermode == render_soft)
+		yslope = &yslopetab[viewheight*8 - centery];
 }
 
 void R_SetupFrame(player_t *player)
diff --git a/src/r_main.h b/src/r_main.h
index 2ac6abf5a1e45ca7b0062a1e663e221ef9825931..f81447c456b8866cf9a0c1347c32a20ca7b7f057 100644
--- a/src/r_main.h
+++ b/src/r_main.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patch.c b/src/r_patch.c
index 1a08d1892d5e13d6b36ebfe59945bce9a58b75f6..6827cd12c75d397fdaa771f3373c5d4812a83952 100644
--- a/src/r_patch.c
+++ b/src/r_patch.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patch.h b/src/r_patch.h
index 32bcb3909efe057af98d54cd151f56414c71deb1..96fbb0e28c11d3bbd91f84edc999a7d6d5223c70 100644
--- a/src/r_patch.h
+++ b/src/r_patch.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patchrotation.c b/src/r_patchrotation.c
index 123c4eef229a20fa554094bf44a2cc3853e72dc8..a9b4a2b8fb701d45f7f21deefee1f75c768ee797 100644
--- a/src/r_patchrotation.c
+++ b/src/r_patchrotation.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_patchrotation.h b/src/r_patchrotation.h
index 2744f71d25380469b30b1fdcf8b5112578a2abd8..689b7d411b63d0143804d789da0501fb1f0d1415 100644
--- a/src/r_patchrotation.h
+++ b/src/r_patchrotation.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2020-2021 by Jaime "Lactozilla" Passos.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_picformats.c b/src/r_picformats.c
index f87362c76ef895097b7e21329367c6b082fa705e..59b1d16c5bdadbf0de6454f40f87815aee19582d 100644
--- a/src/r_picformats.c
+++ b/src/r_picformats.c
@@ -2,8 +2,8 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 2005-2009 by Andrey "entryway" Budko.
-// Copyright (C) 2018-2020 by Jaime "Lactozilla" Passos.
-// Copyright (C) 2019-2020 by Sonic Team Junior.
+// Copyright (C) 2018-2021 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2019-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -540,9 +540,7 @@ void *Picture_GetPatchPixel(
 {
 	fixed_t ofs;
 	column_t *column;
-	UINT8 *s8 = NULL;
-	UINT16 *s16 = NULL;
-	UINT32 *s32 = NULL;
+	INT32 inbpp = Picture_FormatBPP(informat);
 	softwarepatch_t *doompatch = (softwarepatch_t *)patch;
 	boolean isdoompatch = Picture_IsDoomPatchFormat(informat);
 	INT16 width;
@@ -566,30 +564,36 @@ void *Picture_GetPatchPixel(
 
 		while (column->topdelta != 0xff)
 		{
+			UINT8 *s8 = NULL;
+			UINT16 *s16 = NULL;
+			UINT32 *s32 = NULL;
+
 			topdelta = column->topdelta;
 			if (topdelta <= prevdelta)
 				topdelta += prevdelta;
 			prevdelta = topdelta;
-			s8 = (UINT8 *)(column) + 3;
-			if (Picture_FormatBPP(informat) == PICDEPTH_32BPP)
-				s32 = (UINT32 *)s8;
-			else if (Picture_FormatBPP(informat) == PICDEPTH_16BPP)
-				s16 = (UINT16 *)s8;
-			for (ofs = 0; ofs < column->length; ofs++)
+
+			ofs = (y - topdelta);
+
+			if (y >= topdelta && ofs < column->length)
 			{
-				if ((topdelta + ofs) == y)
+				s8 = (UINT8 *)(column) + 3;
+				switch (inbpp)
 				{
-					if (Picture_FormatBPP(informat) == PICDEPTH_32BPP)
+					case PICDEPTH_32BPP:
+						s32 = (UINT32 *)s8;
 						return &s32[ofs];
-					else if (Picture_FormatBPP(informat) == PICDEPTH_16BPP)
+					case PICDEPTH_16BPP:
+						s16 = (UINT16 *)s8;
 						return &s16[ofs];
-					else // PICDEPTH_8BPP
+					default: // PICDEPTH_8BPP
 						return &s8[ofs];
 				}
 			}
-			if (Picture_FormatBPP(informat) == PICDEPTH_32BPP)
+
+			if (inbpp == PICDEPTH_32BPP)
 				column = (column_t *)((UINT32 *)column + column->length);
-			else if (Picture_FormatBPP(informat) == PICDEPTH_16BPP)
+			else if (inbpp == PICDEPTH_16BPP)
 				column = (column_t *)((UINT16 *)column + column->length);
 			else
 				column = (column_t *)((UINT8 *)column + column->length);
@@ -979,8 +983,8 @@ static png_bytep *PNG_Read(
 
 				for (i = 0; i < 256; i++)
 				{
-					UINT32 rgb = R_PutRgbaRGBA(pal->red, pal->green, pal->blue, 0xFF);
-					if (rgb != pMasterPalette[i].rgba)
+					byteColor_t *curpal = &(pMasterPalette[i].s);
+					if (pal->red != curpal->red || pal->green != curpal->green || pal->blue != curpal->blue)
 					{
 						usepal = false;
 						break;
@@ -996,12 +1000,12 @@ static png_bytep *PNG_Read(
 		{
 			png_get_tRNS(png_ptr, png_info_ptr, &trans, &trans_num, &trans_values);
 
-			if (trans && trans_num == 256)
+			if (trans && trans_num > 0)
 			{
 				INT32 i;
 				for (i = 0; i < trans_num; i++)
 				{
-					// libpng will transform this image into RGB even if
+					// libpng will transform this image into RGBA even if
 					// the transparent index does not exist in the image,
 					// and there is no way around that.
 					if (trans[i] < 0xFF)
diff --git a/src/r_picformats.h b/src/r_picformats.h
index 8d3999013475f23b9428e0e252148d91c88c8ea2..b1bb35edd0bbbf71522bb418736caa2968ace940 100644
--- a/src/r_picformats.h
+++ b/src/r_picformats.h
@@ -1,8 +1,8 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
-// Copyright (C) 2018-2020 by Jaime "Lactozilla" Passos.
-// Copyright (C) 2019-2020 by Sonic Team Junior.
+// Copyright (C) 2018-2021 by Jaime "Lactozilla" Passos.
+// Copyright (C) 2019-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_plane.c b/src/r_plane.c
index 45d635213e81166ca5c5fa2c0393bb805edbeef5..4c757d8ca0f0ce305668c2c413a932d016704fcb 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -31,13 +31,6 @@
 #include "z_zone.h"
 #include "p_tick.h"
 
-#ifdef TIMING
-#include "p5prof.h"
-	INT64 mycount;
-	INT64 mytotal = 0;
-	UINT32 nombre = 100000;
-#endif
-
 //
 // opening
 //
@@ -104,6 +97,7 @@ fixed_t cachedxstep[MAXVIDHEIGHT];
 fixed_t cachedystep[MAXVIDHEIGHT];
 
 static fixed_t xoffs, yoffs;
+static floatv3_t ds_slope_origin, ds_slope_u, ds_slope_v;
 
 //
 // R_InitPlanes
@@ -127,21 +121,20 @@ struct
 	boolean active;
 } planeripple;
 
-static void R_CalculatePlaneRipple(visplane_t *plane, INT32 y, fixed_t plheight, boolean calcfrac)
+// ripples da water texture
+static fixed_t R_CalculateRippleOffset(INT32 y)
 {
-	fixed_t distance = FixedMul(plheight, yslope[y]);
+	fixed_t distance = FixedMul(planeheight, yslope[y]);
 	const INT32 yay = (planeripple.offset + (distance>>9)) & 8191;
+	return FixedDiv(FINESINE(yay), (1<<12) + (distance>>11));
+}
 
-	// ripples da water texture
-	ds_bgofs = FixedDiv(FINESINE(yay), (1<<12) + (distance>>11))>>FRACBITS;
-
-	if (calcfrac)
-	{
-		angle_t angle = (plane->viewangle + plane->plangle)>>ANGLETOFINESHIFT;
-		angle = (angle + 2048) & 8191; // 90 degrees
-		planeripple.xfrac = FixedMul(FINECOSINE(angle), (ds_bgofs<<FRACBITS));
-		planeripple.yfrac = FixedMul(FINESINE(angle), (ds_bgofs<<FRACBITS));
-	}
+static void R_CalculatePlaneRipple(angle_t angle)
+{
+	angle >>= ANGLETOFINESHIFT;
+	angle = (angle + 2048) & 8191; // 90 degrees
+	planeripple.xfrac = FixedMul(FINECOSINE(angle), ds_bgofs);
+	planeripple.yfrac = FixedMul(FINESINE(angle), ds_bgofs);
 }
 
 static void R_UpdatePlaneRipple(void)
@@ -154,16 +147,12 @@ static void R_UpdatePlaneRipple(void)
 // R_MapPlane
 //
 // Uses global vars:
+//  planeheight
 //  basexscale
 //  baseyscale
 //  centerx
-//  viewx
-//  viewy
-//  viewsin
-//  viewcos
-//  viewheight
 
-void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
+static void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
 {
 	angle_t angle, planecos, planesin;
 	fixed_t distance = 0, span;
@@ -177,60 +166,50 @@ void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
 	if (x1 >= vid.width)
 		x1 = vid.width - 1;
 
-	if (!currentplane->slope)
+	angle = (currentplane->viewangle + currentplane->plangle)>>ANGLETOFINESHIFT;
+	planecos = FINECOSINE(angle);
+	planesin = FINESINE(angle);
+
+	if (planeheight != cachedheight[y])
 	{
-		angle = (currentplane->viewangle + currentplane->plangle)>>ANGLETOFINESHIFT;
-		planecos = FINECOSINE(angle);
-		planesin = FINESINE(angle);
+		cachedheight[y] = planeheight;
+		cacheddistance[y] = distance = FixedMul(planeheight, yslope[y]);
+		span = abs(centery - y);
 
-		if (planeheight != cachedheight[y])
+		if (span) // don't divide by zero
 		{
-			cachedheight[y] = planeheight;
-			cacheddistance[y] = distance = FixedMul(planeheight, yslope[y]);
-			span = abs(centery - y);
-
-			if (span) // don't divide by zero
-			{
-				ds_xstep = FixedMul(planesin, planeheight) / span;
-				ds_ystep = FixedMul(planecos, planeheight) / span;
-			}
-			else
-			{
-				ds_xstep = FixedMul(distance, basexscale);
-				ds_ystep = FixedMul(distance, baseyscale);
-			}
-
-			cachedxstep[y] = ds_xstep;
-			cachedystep[y] = ds_ystep;
+			ds_xstep = FixedMul(planesin, planeheight) / span;
+			ds_ystep = FixedMul(planecos, planeheight) / span;
 		}
 		else
 		{
-			distance = cacheddistance[y];
-			ds_xstep = cachedxstep[y];
-			ds_ystep = cachedystep[y];
+			ds_xstep = FixedMul(distance, basexscale);
+			ds_ystep = FixedMul(distance, baseyscale);
 		}
 
-		ds_xfrac = xoffs + FixedMul(planecos, distance) + (x1 - centerx) * ds_xstep;
-		ds_yfrac = yoffs - FixedMul(planesin, distance) + (x1 - centerx) * ds_ystep;
+		cachedxstep[y] = ds_xstep;
+		cachedystep[y] = ds_ystep;
+	}
+	else
+	{
+		distance = cacheddistance[y];
+		ds_xstep = cachedxstep[y];
+		ds_ystep = cachedystep[y];
 	}
 
+	ds_xfrac = xoffs + FixedMul(planecos, distance) + (x1 - centerx) * ds_xstep;
+	ds_yfrac = yoffs - FixedMul(planesin, distance) + (x1 - centerx) * ds_ystep;
+
 	// Water ripple effect
 	if (planeripple.active)
 	{
-		// Needed for ds_bgofs
-		R_CalculatePlaneRipple(currentplane, y, planeheight, (!currentplane->slope));
+		ds_bgofs = R_CalculateRippleOffset(y);
 
-		if (currentplane->slope)
-		{
-			ds_sup = &ds_su[y];
-			ds_svp = &ds_sv[y];
-			ds_szp = &ds_sz[y];
-		}
-		else
-		{
-			ds_xfrac += planeripple.xfrac;
-			ds_yfrac += planeripple.yfrac;
-		}
+		R_CalculatePlaneRipple(currentplane->viewangle + currentplane->plangle);
+
+		ds_xfrac += planeripple.xfrac;
+		ds_yfrac += planeripple.yfrac;
+		ds_bgofs >>= FRACBITS;
 
 		if ((y + ds_bgofs) >= viewheight)
 			ds_bgofs = viewheight-y-1;
@@ -238,16 +217,11 @@ void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
 			ds_bgofs = -y;
 	}
 
-	if (currentplane->slope)
-		ds_colormap = colormaps;
-	else
-	{
-		pindex = distance >> LIGHTZSHIFT;
-		if (pindex >= MAXLIGHTZ)
-			pindex = MAXLIGHTZ - 1;
-		ds_colormap = planezlight[pindex];
-	}
+	pindex = distance >> LIGHTZSHIFT;
+	if (pindex >= MAXLIGHTZ)
+		pindex = MAXLIGHTZ - 1;
 
+	ds_colormap = planezlight[pindex];
 	if (currentplane->extra_colormap)
 		ds_colormap = currentplane->extra_colormap->colormap + (ds_colormap - colormaps);
 
@@ -255,19 +229,46 @@ void R_MapPlane(INT32 y, INT32 x1, INT32 x2)
 	ds_x1 = x1;
 	ds_x2 = x2;
 
-	// profile drawer
-#ifdef TIMING
-	ProfZeroTimer();
-#endif
-
 	spanfunc();
+}
 
-#ifdef TIMING
-	RDMSR(0x10, &mycount);
-	mytotal += mycount; // 64bit add
-	if (!(nombre--))
-	I_Error("spanfunc() CPU Spy reports: 0x%d %d\n", *((INT32 *)&mytotal+1), (INT32)mytotal);
+static void R_MapTiltedPlane(INT32 y, INT32 x1, INT32 x2)
+{
+#ifdef RANGECHECK
+	if (x2 < x1 || x1 < 0 || x2 >= viewwidth || y > viewheight)
+		I_Error("R_MapTiltedPlane: %d, %d at %d", x1, x2, y);
 #endif
+
+	if (x1 >= vid.width)
+		x1 = vid.width - 1;
+
+	// Water ripple effect
+	if (planeripple.active)
+	{
+		ds_bgofs = R_CalculateRippleOffset(y);
+
+		ds_sup = &ds_su[y];
+		ds_svp = &ds_sv[y];
+		ds_szp = &ds_sz[y];
+
+		ds_bgofs >>= FRACBITS;
+
+		if ((y + ds_bgofs) >= viewheight)
+			ds_bgofs = viewheight-y-1;
+		if ((y + ds_bgofs) < 0)
+			ds_bgofs = -y;
+	}
+
+	if (currentplane->extra_colormap)
+		ds_colormap = currentplane->extra_colormap->colormap;
+	else
+		ds_colormap = colormaps;
+
+	ds_y = y;
+	ds_x1 = x1;
+	ds_x2 = x2;
+
+	spanfunc();
 }
 
 void R_ClearFFloorClips (void)
@@ -367,11 +368,11 @@ visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel,
 		if (plangle != 0)
 		{
 			// Add the view offset, rotated by the plane angle.
-			fixed_t cosinecomponent = FINECOSINE(plangle>>ANGLETOFINESHIFT);
-			fixed_t sinecomponent = FINESINE(plangle>>ANGLETOFINESHIFT);
-			fixed_t oldxoff = xoff;
-			xoff = FixedMul(xoff,cosinecomponent)+FixedMul(yoff,sinecomponent);
-			yoff = -FixedMul(oldxoff,sinecomponent)+FixedMul(yoff,cosinecomponent);
+			float ang = ANG2RAD(plangle);
+			float x = FixedToFloat(xoff);
+			float y = FixedToFloat(yoff);
+			xoff = FloatToFixed(x * cos(ang) + y * sin(ang));
+			yoff = FloatToFixed(-x * sin(ang) + y * cos(ang));
 		}
 	}
 
@@ -575,12 +576,9 @@ void R_ExpandPlane(visplane_t *pl, INT32 start, INT32 stop)
 
 }
 
-//
-// R_MakeSpans
-//
-void R_MakeSpans(INT32 x, INT32 t1, INT32 b1, INT32 t2, INT32 b2)
+static void R_MakeSpans(INT32 x, INT32 t1, INT32 b1, INT32 t2, INT32 b2)
 {
-	//    Alam: from r_splats's R_RenderFloorSplat
+	//    Alam: from r_splats's R_RasterizeFloorSplat
 	if (t1 >= vid.height) t1 = vid.height-1;
 	if (b1 >= vid.height) b1 = vid.height-1;
 	if (t2 >= vid.height) t2 = vid.height-1;
@@ -604,10 +602,35 @@ void R_MakeSpans(INT32 x, INT32 t1, INT32 b1, INT32 t2, INT32 b2)
 		spanstart[b2--] = x;
 }
 
+static void R_MakeTiltedSpans(INT32 x, INT32 t1, INT32 b1, INT32 t2, INT32 b2)
+{
+	//    Alam: from r_splats's R_RasterizeFloorSplat
+	if (t1 >= vid.height) t1 = vid.height-1;
+	if (b1 >= vid.height) b1 = vid.height-1;
+	if (t2 >= vid.height) t2 = vid.height-1;
+	if (b2 >= vid.height) b2 = vid.height-1;
+	if (x-1 >= vid.width) x = vid.width;
+
+	while (t1 < t2 && t1 <= b1)
+	{
+		R_MapTiltedPlane(t1, spanstart[t1], x - 1);
+		t1++;
+	}
+	while (b1 > b2 && b1 >= t1)
+	{
+		R_MapTiltedPlane(b1, spanstart[b1], x - 1);
+		b1--;
+	}
+
+	while (t2 < t1 && t2 <= b2)
+		spanstart[t2++] = x;
+	while (b2 > b1 && b2 >= t2)
+		spanstart[b2--] = x;
+}
+
 void R_DrawPlanes(void)
 {
 	visplane_t *pl;
-	angle_t va = viewangle;
 	INT32 i;
 
 	R_UpdatePlaneRipple();
@@ -622,8 +645,6 @@ void R_DrawPlanes(void)
 			R_DrawSinglePlane(pl);
 		}
 	}
-
-	viewangle = va;
 }
 
 // R_DrawSkyPlane
@@ -669,69 +690,109 @@ static void R_DrawSkyPlane(visplane_t *pl)
 	}
 }
 
-// Potentially override other stuff for now cus we're mean. :< But draw a slope plane!
-// I copied ZDoom's code and adapted it to SRB2... -Red
-void R_CalculateSlopeVectors(pslope_t *slope, fixed_t planeviewx, fixed_t planeviewy, fixed_t planeviewz, fixed_t planexscale, fixed_t planeyscale, fixed_t planexoffset, fixed_t planeyoffset, angle_t planeviewangle, angle_t planeangle, float fudge)
+// Returns the height of the sloped plane at (x, y) as a 32.16 fixed_t
+static INT64 R_GetSlopeZAt(const pslope_t *slope, fixed_t x, fixed_t y)
 {
-	floatv3_t p, m, n;
-	float ang;
-	float vx, vy, vz;
-	float xscale = FIXED_TO_FLOAT(planexscale);
-	float yscale = FIXED_TO_FLOAT(planeyscale);
-	// compiler complains when P_GetSlopeZAt is used in FLOAT_TO_FIXED directly
-	// use this as a temp var to store P_GetSlopeZAt's return value each time
-	fixed_t temp;
+	INT64 x64 = ((INT64)x - (INT64)slope->o.x);
+	INT64 y64 = ((INT64)y - (INT64)slope->o.y);
 
-	vx = FIXED_TO_FLOAT(planeviewx+planexoffset);
-	vy = FIXED_TO_FLOAT(planeviewy-planeyoffset);
-	vz = FIXED_TO_FLOAT(planeviewz);
+	x64 = (x64 * (INT64)slope->d.x) / FRACUNIT;
+	y64 = (y64 * (INT64)slope->d.y) / FRACUNIT;
 
-	temp = P_GetSlopeZAt(slope, planeviewx, planeviewy);
-	zeroheight = FIXED_TO_FLOAT(temp);
+	return (INT64)slope->o.z + ((x64 + y64) * (INT64)slope->zdelta) / FRACUNIT;
+}
+
+// Sets the texture origin vector of the sloped plane.
+static void R_SetSlopePlaneOrigin(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xoff, fixed_t yoff, fixed_t angle)
+{
+	floatv3_t *p = &ds_slope_origin;
+
+	INT64 vx = (INT64)xpos + (INT64)xoff;
+	INT64 vy = (INT64)ypos - (INT64)yoff;
+
+	float vxf = vx / (float)FRACUNIT;
+	float vyf = vy / (float)FRACUNIT;
+	float ang = ANG2RAD(ANGLE_270 - angle);
 
 	// p is the texture origin in view space
 	// Don't add in the offsets at this stage, because doing so can result in
 	// errors if the flat is rotated.
-	ang = ANG2RAD(ANGLE_270 - planeviewangle);
-	p.x = vx * cos(ang) - vy * sin(ang);
-	p.z = vx * sin(ang) + vy * cos(ang);
-	temp = P_GetSlopeZAt(slope, -planexoffset, planeyoffset);
-	p.y = FIXED_TO_FLOAT(temp) - vz;
+	p->x = vxf * cos(ang) - vyf * sin(ang);
+	p->z = vxf * sin(ang) + vyf * cos(ang);
+	p->y = (R_GetSlopeZAt(slope, -xoff, yoff) - zpos) / (float)FRACUNIT;
+}
+
+// This function calculates all of the vectors necessary for drawing a sloped plane.
+void R_SetSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle)
+{
+	// Potentially override other stuff for now cus we're mean. :< But draw a slope plane!
+	// I copied ZDoom's code and adapted it to SRB2... -Red
+	floatv3_t *m = &ds_slope_v, *n = &ds_slope_u;
+	fixed_t height, temp;
+	float ang;
+
+	R_SetSlopePlaneOrigin(slope, xpos, ypos, zpos, xoff, yoff, angle);
+	height = P_GetSlopeZAt(slope, xpos, ypos);
+	zeroheight = FixedToFloat(height - zpos);
 
 	// m is the v direction vector in view space
-	ang = ANG2RAD(ANGLE_180 - (planeviewangle + planeangle));
-	m.x = yscale * cos(ang);
-	m.z = yscale * sin(ang);
+	ang = ANG2RAD(ANGLE_180 - (angle + plangle));
+	m->x = cos(ang);
+	m->z = sin(ang);
 
 	// n is the u direction vector in view space
-	n.x = xscale * sin(ang);
-	n.z = -xscale * cos(ang);
+	n->x = sin(ang);
+	n->z = -cos(ang);
+
+	plangle >>= ANGLETOFINESHIFT;
+	temp = P_GetSlopeZAt(slope, xpos + FINESINE(plangle), ypos + FINECOSINE(plangle));
+	m->y = FixedToFloat(temp - height);
+	temp = P_GetSlopeZAt(slope, xpos + FINECOSINE(plangle), ypos - FINESINE(plangle));
+	n->y = FixedToFloat(temp - height);
+}
 
-	ang = ANG2RAD(planeangle);
-	temp = P_GetSlopeZAt(slope, planeviewx + FLOAT_TO_FIXED(yscale * sin(ang)), planeviewy + FLOAT_TO_FIXED(yscale * cos(ang)));
-	m.y = FIXED_TO_FLOAT(temp) - zeroheight;
-	temp = P_GetSlopeZAt(slope, planeviewx + FLOAT_TO_FIXED(xscale * cos(ang)), planeviewy - FLOAT_TO_FIXED(xscale * sin(ang)));
-	n.y = FIXED_TO_FLOAT(temp) - zeroheight;
+// This function calculates all of the vectors necessary for drawing a sloped and scaled plane.
+void R_SetScaledSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xs, fixed_t ys, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle)
+{
+	floatv3_t *m = &ds_slope_v, *n = &ds_slope_u;
+	fixed_t height, temp;
 
-	if (ds_powersoftwo)
-	{
-		m.x /= fudge;
-		m.y /= fudge;
-		m.z /= fudge;
+	float xscale = FixedToFloat(xs);
+	float yscale = FixedToFloat(ys);
+	float ang;
 
-		n.x *= fudge;
-		n.y *= fudge;
-		n.z *= fudge;
-	}
+	R_SetSlopePlaneOrigin(slope, xpos, ypos, zpos, xoff, yoff, angle);
+	height = P_GetSlopeZAt(slope, xpos, ypos);
+	zeroheight = FixedToFloat(height - zpos);
+
+	// m is the v direction vector in view space
+	ang = ANG2RAD(ANGLE_180 - (angle + plangle));
+	m->x = yscale * cos(ang);
+	m->z = yscale * sin(ang);
+
+	// n is the u direction vector in view space
+	n->x = xscale * sin(ang);
+	n->z = -xscale * cos(ang);
+
+	ang = ANG2RAD(plangle);
+	temp = P_GetSlopeZAt(slope, xpos + FloatToFixed(yscale * sin(ang)), ypos + FloatToFixed(yscale * cos(ang)));
+	m->y = FixedToFloat(temp - height);
+	temp = P_GetSlopeZAt(slope, xpos + FloatToFixed(xscale * cos(ang)), ypos - FloatToFixed(xscale * sin(ang)));
+	n->y = FixedToFloat(temp - height);
+}
+
+void R_CalculateSlopeVectors(void)
+{
+	float sfmult = 65536.f;
 
 	// Eh. I tried making this stuff fixed-point and it exploded on me. Here's a macro for the only floating-point vector function I recall using.
 #define CROSS(d, v1, v2) \
 d->x = (v1.y * v2.z) - (v1.z * v2.y);\
 d->y = (v1.z * v2.x) - (v1.x * v2.z);\
 d->z = (v1.x * v2.y) - (v1.y * v2.x)
-		CROSS(ds_sup, p, m);
-		CROSS(ds_svp, p, n);
-		CROSS(ds_szp, m, n);
+	CROSS(ds_sup, ds_slope_origin, ds_slope_v);
+	CROSS(ds_svp, ds_slope_origin, ds_slope_u);
+	CROSS(ds_szp, ds_slope_v, ds_slope_u);
 #undef CROSS
 
 	ds_sup->z *= focallengthf;
@@ -739,27 +800,15 @@ d->z = (v1.x * v2.y) - (v1.y * v2.x)
 	ds_szp->z *= focallengthf;
 
 	// Premultiply the texture vectors with the scale factors
-#define SFMULT 65536.f
 	if (ds_powersoftwo)
-	{
-		ds_sup->x *= (SFMULT * (1<<nflatshiftup));
-		ds_sup->y *= (SFMULT * (1<<nflatshiftup));
-		ds_sup->z *= (SFMULT * (1<<nflatshiftup));
-		ds_svp->x *= (SFMULT * (1<<nflatshiftup));
-		ds_svp->y *= (SFMULT * (1<<nflatshiftup));
-		ds_svp->z *= (SFMULT * (1<<nflatshiftup));
-	}
-	else
-	{
-		// Lactozilla: I'm essentially multiplying the vectors by FRACUNIT...
-		ds_sup->x *= SFMULT;
-		ds_sup->y *= SFMULT;
-		ds_sup->z *= SFMULT;
-		ds_svp->x *= SFMULT;
-		ds_svp->y *= SFMULT;
-		ds_svp->z *= SFMULT;
-	}
-#undef SFMULT
+		sfmult *= (1 << nflatshiftup);
+
+	ds_sup->x *= sfmult;
+	ds_sup->y *= sfmult;
+	ds_sup->z *= sfmult;
+	ds_svp->x *= sfmult;
+	ds_svp->y *= sfmult;
+	ds_svp->z *= sfmult;
 }
 
 void R_SetTiltedSpan(INT32 span)
@@ -776,10 +825,40 @@ void R_SetTiltedSpan(INT32 span)
 	ds_szp = &ds_sz[span];
 }
 
-static void R_SetSlopePlaneVectors(visplane_t *pl, INT32 y, fixed_t xoff, fixed_t yoff, float fudge)
+static void R_SetSlopePlaneVectors(visplane_t *pl, INT32 y, fixed_t xoff, fixed_t yoff)
 {
 	R_SetTiltedSpan(y);
-	R_CalculateSlopeVectors(pl->slope, pl->viewx, pl->viewy, pl->viewz, FRACUNIT, FRACUNIT, xoff, yoff, pl->viewangle, pl->plangle, fudge);
+	R_SetSlopePlane(pl->slope, pl->viewx, pl->viewy, pl->viewz, xoff, yoff, pl->viewangle, pl->plangle);
+	R_CalculateSlopeVectors();
+}
+
+static inline void R_AdjustSlopeCoordinates(vector3_t *origin)
+{
+	const fixed_t modmask = ((1 << (32-nflatshiftup)) - 1);
+
+	fixed_t ox = (origin->x & modmask);
+	fixed_t oy = -(origin->y & modmask);
+
+	xoffs &= modmask;
+	yoffs &= modmask;
+
+	xoffs -= (origin->x - ox);
+	yoffs += (origin->y + oy);
+}
+
+static inline void R_AdjustSlopeCoordinatesNPO2(vector3_t *origin)
+{
+	const fixed_t modmaskw = (ds_flatwidth << FRACBITS);
+	const fixed_t modmaskh = (ds_flatheight << FRACBITS);
+
+	fixed_t ox = (origin->x % modmaskw);
+	fixed_t oy = -(origin->y % modmaskh);
+
+	xoffs %= modmaskw;
+	yoffs %= modmaskh;
+
+	xoffs -= (origin->x - ox);
+	yoffs += (origin->y + oy);
 }
 
 void R_DrawSinglePlane(visplane_t *pl)
@@ -789,8 +868,8 @@ void R_DrawSinglePlane(visplane_t *pl)
 	INT32 x;
 	INT32 stop, angle;
 	ffloor_t *rover;
-	int type;
-	int spanfunctype = BASEDRAWFUNC;
+	INT32 type;
+	INT32 spanfunctype = BASEDRAWFUNC;
 
 	if (!(pl->minx <= pl->maxx))
 		return;
@@ -950,7 +1029,6 @@ void R_DrawSinglePlane(visplane_t *pl)
 
 	xoffs = pl->xoffs;
 	yoffs = pl->yoffs;
-	planeheight = abs(pl->height - pl->viewz);
 
 	if (light >= LIGHTLEVELS)
 		light = LIGHTLEVELS-1;
@@ -960,76 +1038,29 @@ void R_DrawSinglePlane(visplane_t *pl)
 
 	if (pl->slope)
 	{
-		float fudgecanyon = 0;
-		angle_t hack = (pl->plangle & (ANGLE_90-1));
-
-		yoffs *= 1;
-
-		if (ds_powersoftwo)
+		if (!pl->plangle)
 		{
-			fixed_t temp;
-			// Okay, look, don't ask me why this works, but without this setup there's a disgusting-looking misalignment with the textures. -Red
-			fudgecanyon = ((1<<nflatshiftup)+1.0f)/(1<<nflatshiftup);
-			if (hack)
-			{
-				/*
-				Essentially: We can't & the components along the regular axes when the plane is rotated.
-				This is because the distance on each regular axis in order to loop is different.
-				We rotate them, & the components, add them together, & them again, and then rotate them back.
-				These three seperate & operations are done per axis in order to prevent overflows.
-				toast 10/04/17
-				*/
-				const fixed_t cosinecomponent = FINECOSINE(hack>>ANGLETOFINESHIFT);
-				const fixed_t sinecomponent = FINESINE(hack>>ANGLETOFINESHIFT);
-
-				const fixed_t modmask = ((1 << (32-nflatshiftup)) - 1);
-
-				fixed_t ox = (FixedMul(pl->slope->o.x,cosinecomponent) & modmask) - (FixedMul(pl->slope->o.y,sinecomponent) & modmask);
-				fixed_t oy = (-FixedMul(pl->slope->o.x,sinecomponent) & modmask) - (FixedMul(pl->slope->o.y,cosinecomponent) & modmask);
-
-				temp = ox & modmask;
-				oy &= modmask;
-				ox = FixedMul(temp,cosinecomponent)+FixedMul(oy,-sinecomponent); // negative sine for opposite direction
-				oy = -FixedMul(temp,-sinecomponent)+FixedMul(oy,cosinecomponent);
-
-				temp = xoffs;
-				xoffs = (FixedMul(temp,cosinecomponent) & modmask) + (FixedMul(yoffs,sinecomponent) & modmask);
-				yoffs = (-FixedMul(temp,sinecomponent) & modmask) + (FixedMul(yoffs,cosinecomponent) & modmask);
-
-				temp = xoffs & modmask;
-				yoffs &= modmask;
-				xoffs = FixedMul(temp,cosinecomponent)+FixedMul(yoffs,-sinecomponent); // ditto
-				yoffs = -FixedMul(temp,-sinecomponent)+FixedMul(yoffs,cosinecomponent);
-
-				xoffs -= (pl->slope->o.x - ox);
-				yoffs += (pl->slope->o.y + oy);
-			}
+			if (ds_powersoftwo)
+				R_AdjustSlopeCoordinates(&pl->slope->o);
 			else
-			{
-				xoffs &= ((1 << (32-nflatshiftup))-1);
-				yoffs &= ((1 << (32-nflatshiftup))-1);
-				xoffs -= (pl->slope->o.x + (1 << (31-nflatshiftup))) & ~((1 << (32-nflatshiftup))-1);
-				yoffs += (pl->slope->o.y + (1 << (31-nflatshiftup))) & ~((1 << (32-nflatshiftup))-1);
-			}
-
-			xoffs = (fixed_t)(xoffs*fudgecanyon);
-			yoffs = (fixed_t)(yoffs/fudgecanyon);
+				R_AdjustSlopeCoordinatesNPO2(&pl->slope->o);
 		}
 
 		if (planeripple.active)
 		{
-			fixed_t plheight = abs(P_GetSlopeZAt(pl->slope, pl->viewx, pl->viewy) - pl->viewz);
+			planeheight = abs(P_GetSlopeZAt(pl->slope, pl->viewx, pl->viewy) - pl->viewz);
 
 			R_PlaneBounds(pl);
 
 			for (x = pl->high; x < pl->low; x++)
 			{
-				R_CalculatePlaneRipple(pl, x, plheight, true);
-				R_SetSlopePlaneVectors(pl, x, (xoffs + planeripple.xfrac), (yoffs + planeripple.yfrac), fudgecanyon);
+				ds_bgofs = R_CalculateRippleOffset(x);
+				R_CalculatePlaneRipple(pl->viewangle + pl->plangle);
+				R_SetSlopePlaneVectors(pl, x, (xoffs + planeripple.xfrac), (yoffs + planeripple.yfrac));
 			}
 		}
 		else
-			R_SetSlopePlaneVectors(pl, 0, xoffs, yoffs, fudgecanyon);
+			R_SetSlopePlaneVectors(pl, 0, xoffs, yoffs);
 
 		switch (spanfunctype)
 		{
@@ -1050,7 +1081,10 @@ void R_DrawSinglePlane(visplane_t *pl)
 		planezlight = scalelight[light];
 	}
 	else
+	{
+		planeheight = abs(pl->height - pl->viewz);
 		planezlight = zlight[light];
+	}
 
 	// Use the correct span drawer depending on the powers-of-twoness
 	if (!ds_powersoftwo)
@@ -1071,18 +1105,15 @@ void R_DrawSinglePlane(visplane_t *pl)
 
 	stop = pl->maxx + 1;
 
-	if (viewx != pl->viewx || viewy != pl->viewy)
+	if (pl->slope)
 	{
-		viewx = pl->viewx;
-		viewy = pl->viewy;
+		for (x = pl->minx; x <= stop; x++)
+			R_MakeTiltedSpans(x, pl->top[x-1], pl->bottom[x-1], pl->top[x], pl->bottom[x]);
 	}
-	if (viewz != pl->viewz)
-		viewz = pl->viewz;
-
-	for (x = pl->minx; x <= stop; x++)
+	else
 	{
-		R_MakeSpans(x, pl->top[x-1], pl->bottom[x-1],
-			pl->top[x], pl->bottom[x]);
+		for (x = pl->minx; x <= stop; x++)
+			R_MakeSpans(x, pl->top[x-1], pl->bottom[x-1], pl->top[x], pl->bottom[x]);
 	}
 
 /*
diff --git a/src/r_plane.h b/src/r_plane.h
index 0d11c5b721c2ffadcaee26f4fbd830a6b2698c0a..bdad77930af31d3448ea98208e128dfa25a99502 100644
--- a/src/r_plane.h
+++ b/src/r_plane.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -78,8 +78,6 @@ void R_InitPlanes(void);
 void R_ClearPlanes(void);
 void R_ClearFFloorClips (void);
 
-void R_MapPlane(INT32 y, INT32 x1, INT32 x2);
-void R_MakeSpans(INT32 x, INT32 t1, INT32 b1, INT32 t2, INT32 b2);
 void R_DrawPlanes(void);
 visplane_t *R_FindPlane(fixed_t height, INT32 picnum, INT32 lightlevel, fixed_t xoff, fixed_t yoff, angle_t plangle,
 	extracolormap_t *planecolormap, ffloor_t *ffloor, polyobj_t *polyobj, pslope_t *slope);
@@ -94,7 +92,9 @@ boolean R_CheckPowersOfTwo(void);
 void R_DrawSinglePlane(visplane_t *pl);
 
 // Calculates the slope vectors needed for tilted span drawing.
-void R_CalculateSlopeVectors(pslope_t *slope, fixed_t planeviewx, fixed_t planeviewy, fixed_t planeviewz, fixed_t planexscale, fixed_t planeyscale, fixed_t planexoffset, fixed_t planeyoffset, angle_t planeviewangle, angle_t planeangle, float fudge);
+void R_SetSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle);
+void R_SetScaledSlopePlane(pslope_t *slope, fixed_t xpos, fixed_t ypos, fixed_t zpos, fixed_t xs, fixed_t ys, fixed_t xoff, fixed_t yoff, angle_t angle, angle_t plangle);
+void R_CalculateSlopeVectors(void);
 
 // Sets the slope vector pointers for the current tilted span.
 void R_SetTiltedSpan(INT32 span);
diff --git a/src/r_portal.c b/src/r_portal.c
index 1aca145ec9bc89e265884d2c7f6f1446a6a5a011..3026f4e4c0a99ea9cde1503eb90952e06b49a26b 100644
--- a/src/r_portal.c
+++ b/src/r_portal.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_portal.h b/src/r_portal.h
index e665a26e63d46cf0431c6e46a52cb64bddd0bbd3..0effd07b5b272e5f799dc04848c6f66ef8dbdede 100644
--- a/src/r_portal.h
+++ b/src/r_portal.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_segs.c b/src/r_segs.c
index c79071e9b53afff41f19ad2cc167e9ae534931b8..a8c85ec33bade941039e1c88fea53906d37a3ee7 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1477,10 +1477,18 @@ static void R_RenderSegLoop (void)
 		}
 
 		for (i = 0; i < numffloors; i++)
+		{
+			if (curline->polyseg && (ffloor[i].polyobj != curline->polyseg))
+				continue;
+
 			ffloor[i].f_frac += ffloor[i].f_step;
+		}
 
 		for (i = 0; i < numbackffloors; i++)
 		{
+			if (curline->polyseg && (ffloor[i].polyobj != curline->polyseg))
+				continue;
+
 			ffloor[i].f_clip[rw_x] = ffloor[i].c_clip[rw_x] = (INT16)((ffloor[i].b_frac >> HEIGHTBITS) & 0xFFFF);
 			ffloor[i].b_frac += ffloor[i].b_step;
 		}
@@ -1649,23 +1657,26 @@ void R_StoreWallRange(INT32 start, INT32 stop)
 		// left
 		temp = xtoviewangle[start]+viewangle;
 
+#define FIXED_TO_DOUBLE(x) (((double)(x)) / ((double)FRACUNIT))
+#define DOUBLE_TO_FIXED(x) (fixed_t)((x) * ((double)FRACUNIT))
+
 		{
 			// Both lines can be written in slope-intercept form, so figure out line intersection
-			float a1, b1, c1, a2, b2, c2, det; // 1 is the seg, 2 is the view angle vector...
-			///TODO: convert to FPU
+			double a1, b1, c1, a2, b2, c2, det; // 1 is the seg, 2 is the view angle vector...
+			///TODO: convert to fixed point
 
-			a1 = FIXED_TO_FLOAT(curline->v2->y-curline->v1->y);
-			b1 = FIXED_TO_FLOAT(curline->v1->x-curline->v2->x);
-			c1 = a1*FIXED_TO_FLOAT(curline->v1->x) + b1*FIXED_TO_FLOAT(curline->v1->y);
+			a1 = FIXED_TO_DOUBLE(curline->v2->y-curline->v1->y);
+			b1 = FIXED_TO_DOUBLE(curline->v1->x-curline->v2->x);
+			c1 = a1*FIXED_TO_DOUBLE(curline->v1->x) + b1*FIXED_TO_DOUBLE(curline->v1->y);
 
-			a2 = -FIXED_TO_FLOAT(FINESINE(temp>>ANGLETOFINESHIFT));
-			b2 = FIXED_TO_FLOAT(FINECOSINE(temp>>ANGLETOFINESHIFT));
-			c2 = a2*FIXED_TO_FLOAT(viewx) + b2*FIXED_TO_FLOAT(viewy);
+			a2 = -FIXED_TO_DOUBLE(FINESINE(temp>>ANGLETOFINESHIFT));
+			b2 = FIXED_TO_DOUBLE(FINECOSINE(temp>>ANGLETOFINESHIFT));
+			c2 = a2*FIXED_TO_DOUBLE(viewx) + b2*FIXED_TO_DOUBLE(viewy);
 
 			det = a1*b2 - a2*b1;
 
-			ds_p->leftpos.x = segleft.x = FLOAT_TO_FIXED((b2*c1 - b1*c2)/det);
-			ds_p->leftpos.y = segleft.y = FLOAT_TO_FIXED((a1*c2 - a2*c1)/det);
+			ds_p->leftpos.x = segleft.x = DOUBLE_TO_FIXED((b2*c1 - b1*c2)/det);
+			ds_p->leftpos.y = segleft.y = DOUBLE_TO_FIXED((a1*c2 - a2*c1)/det);
 		}
 
 		// right
@@ -1673,22 +1684,26 @@ void R_StoreWallRange(INT32 start, INT32 stop)
 
 		{
 			// Both lines can be written in slope-intercept form, so figure out line intersection
-			float a1, b1, c1, a2, b2, c2, det; // 1 is the seg, 2 is the view angle vector...
-			///TODO: convert to FPU
+			double a1, b1, c1, a2, b2, c2, det; // 1 is the seg, 2 is the view angle vector...
+			///TODO: convert to fixed point
 
-			a1 = FIXED_TO_FLOAT(curline->v2->y-curline->v1->y);
-			b1 = FIXED_TO_FLOAT(curline->v1->x-curline->v2->x);
-			c1 = a1*FIXED_TO_FLOAT(curline->v1->x) + b1*FIXED_TO_FLOAT(curline->v1->y);
+			a1 = FIXED_TO_DOUBLE(curline->v2->y-curline->v1->y);
+			b1 = FIXED_TO_DOUBLE(curline->v1->x-curline->v2->x);
+			c1 = a1*FIXED_TO_DOUBLE(curline->v1->x) + b1*FIXED_TO_DOUBLE(curline->v1->y);
 
-			a2 = -FIXED_TO_FLOAT(FINESINE(temp>>ANGLETOFINESHIFT));
-			b2 = FIXED_TO_FLOAT(FINECOSINE(temp>>ANGLETOFINESHIFT));
-			c2 = a2*FIXED_TO_FLOAT(viewx) + b2*FIXED_TO_FLOAT(viewy);
+			a2 = -FIXED_TO_DOUBLE(FINESINE(temp>>ANGLETOFINESHIFT));
+			b2 = FIXED_TO_DOUBLE(FINECOSINE(temp>>ANGLETOFINESHIFT));
+			c2 = a2*FIXED_TO_DOUBLE(viewx) + b2*FIXED_TO_DOUBLE(viewy);
 
 			det = a1*b2 - a2*b1;
 
-			ds_p->rightpos.x = segright.x = FLOAT_TO_FIXED((b2*c1 - b1*c2)/det);
-			ds_p->rightpos.y = segright.y = FLOAT_TO_FIXED((a1*c2 - a2*c1)/det);
+			ds_p->rightpos.x = segright.x = DOUBLE_TO_FIXED((b2*c1 - b1*c2)/det);
+			ds_p->rightpos.y = segright.y = DOUBLE_TO_FIXED((a1*c2 - a2*c1)/det);
 		}
+
+#undef FIXED_TO_DOUBLE
+#undef DOUBLE_TO_FIXED
+
 	}
 
 
diff --git a/src/r_segs.h b/src/r_segs.h
index ace5711d493da30102c791764b78b0f1ba5ff85c..da7d44ad4689f0c28da9e0554caba54e7b8aa0ba 100644
--- a/src/r_segs.h
+++ b/src/r_segs.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_skins.c b/src/r_skins.c
index 6f150f234ed9908f9c58bd42ecbe65ac5e5a534a..b7eb24345d469682cc70f4e251a6101c4688e60a 100644
--- a/src/r_skins.c
+++ b/src/r_skins.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -148,8 +148,6 @@ static void Sk_SetDefaultValue(skin_t *skin)
 	skin->contspeed = 17;
 	skin->contangle = 0;
 
-	skin->availability = 0;
-
 	for (i = 0; i < sfx_skinsoundslot0; i++)
 		if (S_sfx[i].skinsound != -1)
 			skin->soundsid[S_sfx[i].skinsound] = i;
@@ -176,14 +174,34 @@ void R_InitSkins(void)
 
 UINT32 R_GetSkinAvailabilities(void)
 {
-	INT32 s;
 	UINT32 response = 0;
+	UINT32 unlockShift = 0;
+	INT32 i;
 
-	for (s = 0; s < MAXSKINS; s++)
+	for (i = 0; i < MAXUNLOCKABLES; i++)
 	{
-		if (skins[s].availability && unlockables[skins[s].availability - 1].unlocked)
-			response |= (1 << s);
+		if (unlockables[i].type != SECRET_SKIN)
+		{
+			continue;
+		}
+
+		if (unlockShift >= 32)
+		{
+			// This crash is impossible to trigger as is,
+			// but it could happen if MAXUNLOCKABLES is ever made higher than 32,
+			// and someone makes a mod that has 33+ unlockable characters. :V
+			I_Error("Too many unlockable characters\n");
+			return 0;
+		}
+
+		if (unlockables[i].unlocked)
+		{
+			response |= (1 << unlockShift);
+		}
+
+		unlockShift++;
 	}
+
 	return response;
 }
 
@@ -191,14 +209,78 @@ UINT32 R_GetSkinAvailabilities(void)
 // warning don't use with an invalid skinnum other than -1 which always returns true
 boolean R_SkinUsable(INT32 playernum, INT32 skinnum)
 {
-	return ((skinnum == -1) // Simplifies things elsewhere, since there's already plenty of checks for less-than-0...
-		|| (!skins[skinnum].availability)
-		|| (((netgame || multiplayer) && playernum != -1) ? (players[playernum].availabilities & (1 << skinnum)) : (unlockables[skins[skinnum].availability - 1].unlocked))
-		|| (modeattacking) // If you have someone else's run you might as well take a look
-		|| (Playing() && (R_SkinAvailable(mapheaderinfo[gamemap-1]->forcecharacter) == skinnum)) // Force 1.
-		|| (netgame && (cv_forceskin.value == skinnum)) // Force 2.
-		|| (metalrecording && skinnum == 5) // Force 3.
-		);
+	INT32 unlockID = -1;
+	UINT32 unlockShift = 0;
+	INT32 i;
+
+	if (skinnum == -1)
+	{
+		// Simplifies things elsewhere, since there's already plenty of checks for less-than-0...
+		return true;
+	}
+
+	if (modeattacking)
+	{
+		// If you have someone else's run you might as well take a look
+		return true;
+	}
+
+	if (Playing() && (R_SkinAvailable(mapheaderinfo[gamemap-1]->forcecharacter) == skinnum))
+	{
+		// Force 1.
+		return true;
+	}
+
+	if (netgame && (cv_forceskin.value == skinnum))
+	{
+		// Force 2.
+		return true;
+	}
+	
+	if (metalrecording && skinnum == 5)
+	{
+		// Force 3.
+		return true;
+	}
+
+	// We will now check if this skin is supposed to be locked or not.
+
+	for (i = 0; i < MAXUNLOCKABLES; i++)
+	{
+		INT32 unlockSkin = -1;
+
+		if (unlockables[i].type != SECRET_SKIN)
+		{
+			continue;
+		}
+
+		unlockSkin = M_UnlockableSkinNum(&unlockables[i]);
+
+		if (unlockSkin == skinnum)
+		{
+			unlockID = i;
+			break;
+		}
+
+		unlockShift++;
+	}
+
+	if (unlockID == -1)
+	{
+		// This skin isn't locked at all, we're good.
+		return true;
+	}
+
+	if ((netgame || multiplayer) && playernum != -1)
+	{
+		// We want to check per-player unlockables.
+		return (players[playernum].availabilities & (1 << unlockShift));
+	}
+	else
+	{
+		// We want to check our global unlockables.
+		return (unlockables[unlockID].unlocked);
+	}
 }
 
 // returns true if the skin name is found (loaded from pwad)
@@ -216,6 +298,103 @@ INT32 R_SkinAvailable(const char *name)
 	return -1;
 }
 
+// Auxillary function that actually sets the skin
+static void SetSkin(player_t *player, INT32 skinnum)
+{
+	skin_t *skin = &skins[skinnum];
+	UINT16 newcolor = 0;
+
+	player->skin = skinnum;
+
+	player->camerascale = skin->camerascale;
+	player->shieldscale = skin->shieldscale;
+
+	player->charability = (UINT8)skin->ability;
+	player->charability2 = (UINT8)skin->ability2;
+
+	player->charflags = (UINT32)skin->flags;
+
+	player->thokitem = skin->thokitem < 0 ? (UINT32)mobjinfo[MT_PLAYER].painchance : (UINT32)skin->thokitem;
+	player->spinitem = skin->spinitem < 0 ? (UINT32)mobjinfo[MT_PLAYER].damage : (UINT32)skin->spinitem;
+	player->revitem = skin->revitem < 0 ? (mobjtype_t)mobjinfo[MT_PLAYER].raisestate : (UINT32)skin->revitem;
+	player->followitem = skin->followitem;
+
+	if (((player->powers[pw_shield] & SH_NOSTACK) == SH_PINK) && (player->revitem == MT_LHRT || player->spinitem == MT_LHRT || player->thokitem == MT_LHRT)) // Healers can't keep their buff.
+		player->powers[pw_shield] &= SH_STACK;
+
+	player->actionspd = skin->actionspd;
+	player->mindash = skin->mindash;
+	player->maxdash = skin->maxdash;
+
+	player->normalspeed = skin->normalspeed;
+	player->runspeed = skin->runspeed;
+	player->thrustfactor = skin->thrustfactor;
+	player->accelstart = skin->accelstart;
+	player->acceleration = skin->acceleration;
+
+	player->jumpfactor = skin->jumpfactor;
+
+	player->height = skin->height;
+	player->spinheight = skin->spinheight;
+
+	if (!(cv_debug || devparm) && !(netgame || multiplayer || demoplayback))
+	{
+		if (player == &players[consoleplayer])
+			CV_StealthSetValue(&cv_playercolor, skin->prefcolor);
+		else if (player == &players[secondarydisplayplayer])
+			CV_StealthSetValue(&cv_playercolor2, skin->prefcolor);
+		player->skincolor = newcolor = skin->prefcolor;
+		if (player->bot && botingame)
+		{
+			botskin = (UINT8)(skinnum + 1);
+			botcolor = skin->prefcolor;
+		}
+	}
+
+	if (player->followmobj)
+	{
+		P_RemoveMobj(player->followmobj);
+		P_SetTarget(&player->followmobj, NULL);
+	}
+
+	if (player->mo)
+	{
+		fixed_t radius = FixedMul(skin->radius, player->mo->scale);
+		if ((player->powers[pw_carry] == CR_NIGHTSMODE) && (skin->sprites[SPR2_NFLY].numframes == 0)) // If you don't have a sprite for flying horizontally, use the default NiGHTS skin.
+		{
+			skin = &skins[DEFAULTNIGHTSSKIN];
+			player->followitem = skin->followitem;
+			if (!(cv_debug || devparm) && !(netgame || multiplayer || demoplayback))
+				newcolor = skin->prefcolor; // will be updated in thinker to flashing
+		}
+		player->mo->skin = skin;
+		if (newcolor)
+			player->mo->color = newcolor;
+		P_SetScale(player->mo, player->mo->scale);
+		player->mo->radius = radius;
+
+		P_SetPlayerMobjState(player->mo, player->mo->state-states); // Prevent visual errors when switching between skins with differing number of frames
+	}
+}
+
+// Gets the player to the first usuable skin in the game.
+// (If your mod locked them all, then you kinda stupid)
+INT32 GetPlayerDefaultSkin(INT32 playernum)
+{
+	INT32 i;
+
+	for (i = 0; i < numskins; i++)
+	{
+		if (R_SkinUsable(playernum, i))
+		{
+			return i;
+		}
+	}
+
+	I_Error("All characters are locked!");
+	return 0;
+}
+
 // network code calls this when a 'skin change' is received
 void SetPlayerSkin(INT32 playernum, const char *skinname)
 {
@@ -224,16 +403,16 @@ void SetPlayerSkin(INT32 playernum, const char *skinname)
 
 	if ((i != -1) && R_SkinUsable(playernum, i))
 	{
-		SetPlayerSkinByNum(playernum, i);
+		SetSkin(player, i);
 		return;
 	}
 
 	if (P_IsLocalPlayer(player))
 		CONS_Alert(CONS_WARNING, M_GetText("Skin '%s' not found.\n"), skinname);
-	else if(server || IsPlayerAdmin(consoleplayer))
+	else if (server || IsPlayerAdmin(consoleplayer))
 		CONS_Alert(CONS_WARNING, M_GetText("Player %d (%s) skin '%s' not found\n"), playernum, player_names[playernum], skinname);
 
-	SetPlayerSkinByNum(playernum, 0);
+	SetSkin(player, GetPlayerDefaultSkin(playernum));
 }
 
 // Same as SetPlayerSkin, but uses the skin #.
@@ -241,90 +420,19 @@ void SetPlayerSkin(INT32 playernum, const char *skinname)
 void SetPlayerSkinByNum(INT32 playernum, INT32 skinnum)
 {
 	player_t *player = &players[playernum];
-	skin_t *skin = &skins[skinnum];
-	UINT16 newcolor = 0;
 
 	if (skinnum >= 0 && skinnum < numskins && R_SkinUsable(playernum, skinnum)) // Make sure it exists!
 	{
-		player->skin = skinnum;
-
-		player->camerascale = skin->camerascale;
-		player->shieldscale = skin->shieldscale;
-
-		player->charability = (UINT8)skin->ability;
-		player->charability2 = (UINT8)skin->ability2;
-
-		player->charflags = (UINT32)skin->flags;
-
-		player->thokitem = skin->thokitem < 0 ? (UINT32)mobjinfo[MT_PLAYER].painchance : (UINT32)skin->thokitem;
-		player->spinitem = skin->spinitem < 0 ? (UINT32)mobjinfo[MT_PLAYER].damage : (UINT32)skin->spinitem;
-		player->revitem = skin->revitem < 0 ? (mobjtype_t)mobjinfo[MT_PLAYER].raisestate : (UINT32)skin->revitem;
-		player->followitem = skin->followitem;
-
-		if (((player->powers[pw_shield] & SH_NOSTACK) == SH_PINK) && (player->revitem == MT_LHRT || player->spinitem == MT_LHRT || player->thokitem == MT_LHRT)) // Healers can't keep their buff.
-			player->powers[pw_shield] &= SH_STACK;
-
-		player->actionspd = skin->actionspd;
-		player->mindash = skin->mindash;
-		player->maxdash = skin->maxdash;
-
-		player->normalspeed = skin->normalspeed;
-		player->runspeed = skin->runspeed;
-		player->thrustfactor = skin->thrustfactor;
-		player->accelstart = skin->accelstart;
-		player->acceleration = skin->acceleration;
-
-		player->jumpfactor = skin->jumpfactor;
-
-		player->height = skin->height;
-		player->spinheight = skin->spinheight;
-
-		if (!(cv_debug || devparm) && !(netgame || multiplayer || demoplayback))
-		{
-			if (playernum == consoleplayer)
-				CV_StealthSetValue(&cv_playercolor, skin->prefcolor);
-			else if (playernum == secondarydisplayplayer)
-				CV_StealthSetValue(&cv_playercolor2, skin->prefcolor);
-			player->skincolor = newcolor = skin->prefcolor;
-			if (player->bot && botingame)
-			{
-				botskin = (UINT8)(skinnum + 1);
-				botcolor = skin->prefcolor;
-			}
-		}
-
-		if (player->followmobj)
-		{
-			P_RemoveMobj(player->followmobj);
-			P_SetTarget(&player->followmobj, NULL);
-		}
-
-		if (player->mo)
-		{
-			fixed_t radius = FixedMul(skin->radius, player->mo->scale);
-			if ((player->powers[pw_carry] == CR_NIGHTSMODE) && (skin->sprites[SPR2_NFLY].numframes == 0)) // If you don't have a sprite for flying horizontally, use the default NiGHTS skin.
-			{
-				skin = &skins[DEFAULTNIGHTSSKIN];
-				player->followitem = skin->followitem;
-				if (!(cv_debug || devparm) && !(netgame || multiplayer || demoplayback))
-					newcolor = skin->prefcolor; // will be updated in thinker to flashing
-			}
-			player->mo->skin = skin;
-			if (newcolor)
-				player->mo->color = newcolor;
-			P_SetScale(player->mo, player->mo->scale);
-			player->mo->radius = radius;
-
-			P_SetPlayerMobjState(player->mo, player->mo->state-states); // Prevent visual errors when switching between skins with differing number of frames
-		}
+		SetSkin(player, skinnum);
 		return;
 	}
 
 	if (P_IsLocalPlayer(player))
 		CONS_Alert(CONS_WARNING, M_GetText("Requested skin %d not found\n"), skinnum);
-	else if(server || IsPlayerAdmin(consoleplayer))
+	else if (server || IsPlayerAdmin(consoleplayer))
 		CONS_Alert(CONS_WARNING, "Player %d (%s) skin %d not found\n", playernum, player_names[playernum], skinnum);
-	SetPlayerSkinByNum(playernum, 0); // not found put the sonic skin
+
+	SetSkin(player, GetPlayerDefaultSkin(playernum));
 }
 
 //
@@ -558,7 +666,7 @@ static boolean R_ProcessPatchableFields(skin_t *skin, char *stoken, char *value)
 //
 // Find skin sprites, sounds & optional status bar face, & add them
 //
-void R_AddSkins(UINT16 wadnum)
+void R_AddSkins(UINT16 wadnum, boolean mainfile)
 {
 	UINT16 lump, lastlump = 0;
 	char *buf;
@@ -673,12 +781,6 @@ void R_AddSkins(UINT16 wadnum)
 				if (!realname)
 					STRBUFCPY(skin->realname, skin->hudname);
 			}
-			else if (!stricmp(stoken, "availability"))
-			{
-				skin->availability = atoi(value);
-				if (skin->availability >= MAXUNLOCKABLES)
-					skin->availability = 0;
-			}
 			else if (!R_ProcessPatchableFields(skin, stoken, value))
 				CONS_Debug(DBG_SETUP, "R_AddSkins: Unknown keyword '%s' in S_SKIN lump #%d (WAD %s)\n", stoken, lump, wadfiles[wadnum]->filename);
 
@@ -693,7 +795,7 @@ next_token:
 
 		R_FlushTranslationColormapCache();
 
-		if (!skin->availability) // Safe to print...
+		if (mainfile == false)
 			CONS_Printf(M_GetText("Added skin '%s'\n"), skin->name);
 #ifdef SKINVALUES
 		skin_cons_t[numskins].value = numskins;
@@ -713,7 +815,7 @@ next_token:
 //
 // Patch skin sprites
 //
-void R_PatchSkins(UINT16 wadnum)
+void R_PatchSkins(UINT16 wadnum, boolean mainfile)
 {
 	UINT16 lump, lastlump = 0;
 	char *buf;
@@ -826,7 +928,7 @@ next_token:
 
 		R_FlushTranslationColormapCache();
 
-		if (!skin->availability) // Safe to print...
+		if (mainfile == false)
 			CONS_Printf(M_GetText("Patched skin '%s'\n"), skin->name);
 	}
 	return;
diff --git a/src/r_skins.h b/src/r_skins.h
index fbbb38743d84704d3373aafd9e5cc1a7135a46d2..a38997f4dd623aad8dc7cdf21aff1283f8c8aa93 100644
--- a/src/r_skins.h
+++ b/src/r_skins.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -80,8 +80,6 @@ typedef struct
 	// contains super versions too
 	spritedef_t sprites[NUMPLAYERSPRITES*2];
 	spriteinfo_t sprinfo[NUMPLAYERSPRITES*2];
-
-	UINT8 availability; // lock?
 } skin_t;
 
 /// Externs
@@ -91,13 +89,14 @@ extern skin_t skins[MAXSKINS];
 /// Function prototypes
 void R_InitSkins(void);
 
+INT32 GetPlayerDefaultSkin(INT32 playernum);
 void SetPlayerSkin(INT32 playernum,const char *skinname);
 void SetPlayerSkinByNum(INT32 playernum,INT32 skinnum); // Tails 03-16-2002
 boolean R_SkinUsable(INT32 playernum, INT32 skinnum);
 UINT32 R_GetSkinAvailabilities(void);
 INT32 R_SkinAvailable(const char *name);
-void R_PatchSkins(UINT16 wadnum);
-void R_AddSkins(UINT16 wadnum);
+void R_AddSkins(UINT16 wadnum, boolean mainfile);
+void R_PatchSkins(UINT16 wadnum, boolean mainfile);
 
 UINT8 P_GetSkinSprite2(skin_t *skin, UINT8 spr2, player_t *player);
 
diff --git a/src/r_sky.c b/src/r_sky.c
index 7cdcfa44d2e7c74bd1d2a6204ef75cd749b6abd8..041cccfc5546f679894a7d7ab2e6cc93c0d8c8c4 100644
--- a/src/r_sky.c
+++ b/src/r_sky.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_sky.h b/src/r_sky.h
index 55d866b86a52a5151b0c0decc4e6d587edd129a4..f4356dcfae3f4f6e47248bb7d6ef46e21495fa31 100644
--- a/src/r_sky.h
+++ b/src/r_sky.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_splats.c b/src/r_splats.c
index a3fad82d81730ff1d0ff967f0a4419c60791e59a..4783fb6408d560d7dc9578a09e09d6350227fdb5 100644
--- a/src/r_splats.c
+++ b/src/r_splats.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -28,11 +28,12 @@ static void prepare_rastertab(void);
 //                                                               FLOOR SPLATS
 // ==========================================================================
 
+static void R_RasterizeFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis);
+
 #ifdef USEASM
 void ASMCALL rasterize_segment_tex_asm(INT32 x1, INT32 y1, INT32 x2, INT32 y2, INT32 tv1, INT32 tv2, INT32 tc, INT32 dir);
 #endif
 
-// Lactozilla
 static void rasterize_segment_tex(INT32 x1, INT32 y1, INT32 x2, INT32 y2, INT32 tv1, INT32 tv2, INT32 tc, INT32 dir)
 {
 #ifdef USEASM
@@ -137,7 +138,7 @@ static void rasterize_segment_tex(INT32 x1, INT32 y1, INT32 x2, INT32 y2, INT32
 	}
 }
 
-void R_DrawFloorSprite(vissprite_t *spr)
+void R_DrawFloorSplat(vissprite_t *spr)
 {
 	floorsplat_t splat;
 	mobj_t *mobj = spr->mobj;
@@ -187,7 +188,7 @@ void R_DrawFloorSprite(vissprite_t *spr)
 	if (spr->rotateflags & SRF_3D || renderflags & RF_NOSPLATBILLBOARD)
 		splatangle = mobj->angle;
 	else
-		splatangle = viewangle;
+		splatangle = spr->viewangle;
 
 	if (!(spr->cut & SC_ISROTATED))
 		splatangle += mobj->rollangle;
@@ -265,7 +266,6 @@ void R_DrawFloorSprite(vissprite_t *spr)
 
 	if (splat.tilted)
 	{
-		// Lactozilla: Just copy the entire slope LMFAOOOO
 		pslope_t *s = &splat.slope;
 
 		s->o.x = slope->o.x;
@@ -330,7 +330,7 @@ void R_DrawFloorSprite(vissprite_t *spr)
 		v2d[i].y = (centeryfrac + FixedMul(rot_z, yscale))>>FRACBITS;
 	}
 
-	R_RenderFloorSplat(&splat, v2d, spr);
+	R_RasterizeFloorSplat(&splat, v2d, spr);
 }
 
 // --------------------------------------------------------------------------
@@ -338,7 +338,7 @@ void R_DrawFloorSprite(vissprite_t *spr)
 // fill the polygon with linear interpolation, call span drawer for each
 // scan line
 // --------------------------------------------------------------------------
-void R_RenderFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis)
+static void R_RasterizeFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis)
 {
 	// rasterizing
 	INT32 miny = viewheight + 1, maxy = 0;
@@ -416,11 +416,11 @@ void R_RenderFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis
 	if (R_CheckPowersOfTwo())
 		R_CheckFlatLength(ds_flatwidth * ds_flatheight);
 
-	// Lactozilla: I don't know what I'm doing
 	if (pSplat->tilted)
 	{
 		R_SetTiltedSpan(0);
-		R_CalculateSlopeVectors(&pSplat->slope, viewx, viewy, viewz, pSplat->xscale, pSplat->yscale, -pSplat->verts[0].x, pSplat->verts[0].y, viewangle, pSplat->angle, 1.0f);
+		R_SetScaledSlopePlane(&pSplat->slope, viewx, viewy, viewz, pSplat->xscale, pSplat->yscale, -pSplat->verts[0].x, pSplat->verts[0].y, vis->viewangle, pSplat->angle);
+		R_CalculateSlopeVectors();
 		spanfunctype = SPANDRAWFUNC_TILTEDSPRITE;
 	}
 	else
@@ -533,7 +533,7 @@ void R_RenderFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis
 			fixed_t xstep, ystep;
 			fixed_t distance, span;
 
-			angle_t angle = (viewangle + pSplat->angle)>>ANGLETOFINESHIFT;
+			angle_t angle = (vis->viewangle + pSplat->angle)>>ANGLETOFINESHIFT;
 			angle_t planecos = FINECOSINE(angle);
 			angle_t planesin = FINESINE(angle);
 
@@ -543,17 +543,13 @@ void R_RenderFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis
 				distance = cacheddistance[y] = FixedMul(planeheight, yslope[y]);
 				span = abs(centery - y);
 
-				if (span) // don't divide by zero
+				if (span) // Don't divide by zero
 				{
 					xstep = FixedMul(planesin, planeheight) / span;
 					ystep = FixedMul(planecos, planeheight) / span;
 				}
 				else
-				{
-					// ah
-					xstep = FRACUNIT;
-					ystep = FRACUNIT;
-				}
+					xstep = ystep = FRACUNIT;
 
 				cachedxstep[y] = xstep;
 				cachedystep[y] = ystep;
diff --git a/src/r_splats.h b/src/r_splats.h
index e1f836f489bab54513dafd5b867ebfd7dbc79f44..cab3d63b66bf8f2bca5324dcd2f677253e7dee7d 100644
--- a/src/r_splats.h
+++ b/src/r_splats.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -42,7 +42,6 @@ typedef struct floorsplat_s
 	mobj_t *mobj; // Mobj it is tied to
 } floorsplat_t;
 
-void R_DrawFloorSprite(vissprite_t *spr);
-void R_RenderFloorSplat(floorsplat_t *pSplat, vector2_t *verts, vissprite_t *vis);
+void R_DrawFloorSplat(vissprite_t *spr);
 
 #endif /*__R_SPLATS_H__*/
diff --git a/src/r_state.h b/src/r_state.h
index 25aa697024c87ceeee88d0b1f1312d7270a502b8..5a606ed8c9fa2804f5802d8834a1f7d85b963260 100644
--- a/src/r_state.h
+++ b/src/r_state.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_textures.c b/src/r_textures.c
index a006d739fc75278d6cfbd35cac997ff8e444fe94..d5da69018cb39c81a1dcac1fe01736ee67abab65 100644
--- a/src/r_textures.c
+++ b/src/r_textures.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -28,11 +28,6 @@
 #include "byteptr.h"
 #include "dehacked.h"
 
-// I don't know what this is even for, but r_data.c had it.
-#ifdef _WIN32
-#include <malloc.h> // alloca(sizeof)
-#endif
-
 #ifdef HWRENDER
 #include "hardware/hw_glob.h" // HWR_LoadMapTextures
 #endif
@@ -626,7 +621,7 @@ void *R_GetLevelFlat(levelflat_t *levelflat)
 //
 // R_CheckPowersOfTwo
 //
-// Self-explanatory?
+// Sets ds_powersoftwo true if the flat's dimensions are powers of two, and returns that.
 //
 boolean R_CheckPowersOfTwo(void)
 {
diff --git a/src/r_textures.h b/src/r_textures.h
index 74a94a9ededc42ca2a7a66413141de9d8f98535d..dd286b6ac57c7082f57bece9445d9c1695958d13 100644
--- a/src/r_textures.h
+++ b/src/r_textures.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/r_things.c b/src/r_things.c
index 08337392742fe3775f3faa2d1f0a073937736fc6..0283712b85bd610a6c82dadfbeb98d9572bc14ea 100644
--- a/src/r_things.c
+++ b/src/r_things.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -230,7 +230,7 @@ boolean R_AddSingleSpriteDef(const char *sprname, spritedef_t *spritedef, UINT16
 	UINT8 rotation;
 	lumpinfo_t *lumpinfo;
 	softwarepatch_t patch;
-	UINT8 numadded = 0;
+	UINT16 numadded = 0;
 
 	memset(sprtemp,0xFF, sizeof (sprtemp));
 	maxframe = (size_t)-1;
@@ -547,8 +547,8 @@ void R_InitSprites(void)
 	R_InitSkins();
 	for (i = 0; i < numwadfiles; i++)
 	{
-		R_AddSkins((UINT16)i);
-		R_PatchSkins((UINT16)i);
+		R_AddSkins((UINT16)i, true);
+		R_PatchSkins((UINT16)i, true);
 		R_LoadSpriteInfoLumps(i, wadfiles[i]->numlumps);
 	}
 	ST_ReloadSkinFaceGraphics();
@@ -753,7 +753,7 @@ UINT8 *R_GetSpriteTranslation(vissprite_t *vis)
 		else if (vis->mobj->type == MT_METALSONIC_BATTLE)
 			return R_GetTranslationColormap(TC_METALSONIC, 0, GTC_CACHE);
 		else
-			return R_GetTranslationColormap(TC_BOSS, 0, GTC_CACHE);
+			return R_GetTranslationColormap(TC_BOSS, vis->mobj->color, GTC_CACHE);
 	}
 	else if (vis->mobj->color)
 	{
@@ -796,7 +796,7 @@ static void R_DrawVisSprite(vissprite_t *vis)
 	INT32 pwidth;
 	fixed_t frac;
 	patch_t *patch = vis->patch;
-	fixed_t this_scale = vis->mobj->scale;
+	fixed_t this_scale = vis->thingscale;
 	INT32 x1, x2;
 	INT64 overflow_test;
 
@@ -1078,6 +1078,14 @@ static void R_SplitSprite(vissprite_t *sprite)
 		sprite->sz = cutfrac;
 		newsprite->szt = (INT16)(sprite->sz - 1);
 
+		if (testheight < sprite->pzt && testheight > sprite->pz)
+			sprite->pz = newsprite->pzt = testheight;
+		else
+		{
+			newsprite->pz = newsprite->gz;
+			newsprite->pzt = newsprite->gzt;
+		}
+
 		newsprite->szt -= 8;
 
 		newsprite->cut |= SC_TOP;
@@ -1300,12 +1308,16 @@ static void R_ProjectDropShadow(mobj_t *thing, vissprite_t *vis, fixed_t scale,
 	shadow->patch = patch;
 	shadow->heightsec = vis->heightsec;
 
+	shadow->thingheight = FRACUNIT;
+	shadow->pz = groundz + (isflipped ? -shadow->thingheight : 0);
+	shadow->pzt = shadow->pz + shadow->thingheight;
+
 	shadow->mobjflags = 0;
 	shadow->sortscale = vis->sortscale;
 	shadow->dispoffset = vis->dispoffset - 5;
 	shadow->gx = thing->x;
 	shadow->gy = thing->y;
-	shadow->gzt = groundz + patch->height * shadowyscale / 2;
+	shadow->gzt = (isflipped ? shadow->pzt : shadow->pz) + patch->height * shadowyscale / 2;
 	shadow->gz = shadow->gzt - patch->height * shadowyscale;
 	shadow->texturemid = FixedMul(thing->scale, FixedDiv(shadow->gzt - viewz, shadowyscale));
 	if (thing->skin && ((skin_t *)thing->skin)->flags & SF_HIRES)
@@ -1320,6 +1332,7 @@ static void R_ProjectDropShadow(mobj_t *thing, vissprite_t *vis, fixed_t scale,
 
 	shadow->xscale = FixedMul(xscale, shadowxscale); //SoM: 4/17/2000
 	shadow->scale = FixedMul(yscale, shadowyscale);
+	shadow->thingscale = thing->scale;
 	shadow->sector = vis->sector;
 	shadow->szt = (INT16)((centeryfrac - FixedMul(shadow->gzt - viewz, yscale))>>FRACBITS);
 	shadow->sz = (INT16)((centeryfrac - FixedMul(shadow->gz - viewz, yscale))>>FRACBITS);
@@ -1411,7 +1424,7 @@ static void R_ProjectSprite(mobj_t *thing)
 
 	fixed_t sheartan = 0;
 	fixed_t shadowscale = FRACUNIT;
-	fixed_t basetx; // drop shadows
+	fixed_t basetx, basetz; // drop shadows
 
 	boolean shadowdraw, shadoweffects, shadowskew;
 	boolean splat = R_ThingIsFloorSprite(thing);
@@ -1441,7 +1454,7 @@ static void R_ProjectSprite(mobj_t *thing)
 	tr_x = thing->x - viewx;
 	tr_y = thing->y - viewy;
 
-	tz = FixedMul(tr_x, viewcos) + FixedMul(tr_y, viewsin); // near/far distance
+	basetz = tz = FixedMul(tr_x, viewcos) + FixedMul(tr_y, viewsin); // near/far distance
 
 	// thing is behind view plane?
 	if (!papersprite && (tz < FixedMul(MINZ, this_scale))) // papersprite clipping is handled later
@@ -1790,7 +1803,7 @@ static void R_ProjectSprite(mobj_t *thing)
 	else if (oldthing->frame & FF_TRANSMASK)
 	{
 		trans = (oldthing->frame & FF_TRANSMASK) >> FF_TRANSSHIFT;
-		if (oldthing->blendmode == AST_TRANSLUCENT && trans >= NUMTRANSMAPS)
+		if (!R_BlendLevelVisible(oldthing->blendmode, trans))
 			return;
 	}
 	else
@@ -1935,11 +1948,15 @@ static void R_ProjectSprite(mobj_t *thing)
 	vis->gy = thing->y;
 	vis->gz = gz;
 	vis->gzt = gzt;
+	vis->thingheight = thing->height;
+	vis->pz = thing->z;
+	vis->pzt = vis->pz + vis->thingheight;
 	vis->texturemid = FixedDiv(gzt - viewz, spriteyscale);
 	vis->scalestep = scalestep;
 	vis->paperoffset = paperoffset;
 	vis->paperdistance = paperdistance;
 	vis->centerangle = centerangle;
+	vis->viewangle = viewangle;
 	vis->shear.tan = sheartan;
 	vis->shear.offset = 0;
 
@@ -1960,6 +1977,7 @@ static void R_ProjectSprite(mobj_t *thing)
 
 	vis->xscale = FixedMul(spritexscale, xscale); //SoM: 4/17/2000
 	vis->scale = FixedMul(spriteyscale, yscale); //<<detailshift;
+	vis->thingscale = oldthing->scale;
 
 	vis->spritexscale = spritexscale;
 	vis->spriteyscale = spriteyscale;
@@ -2037,7 +2055,7 @@ static void R_ProjectSprite(mobj_t *thing)
 		R_SplitSprite(vis);
 
 	if (oldthing->shadowscale && cv_shadow.value)
-		R_ProjectDropShadow(oldthing, vis, oldthing->shadowscale, basetx, tz);
+		R_ProjectDropShadow(oldthing, vis, oldthing->shadowscale, basetx, basetz);
 
 	// Debug
 	++objectsdrawn;
@@ -2151,6 +2169,9 @@ static void R_ProjectPrecipitationSprite(precipmobj_t *thing)
 	vis->gy = thing->y;
 	vis->gz = gz;
 	vis->gzt = gzt;
+	vis->thingheight = 4*FRACUNIT;
+	vis->pz = thing->z;
+	vis->pzt = vis->pz + vis->thingheight;
 	vis->texturemid = vis->gzt - viewz;
 	vis->scalestep = 0;
 	vis->paperdistance = 0;
@@ -2179,7 +2200,7 @@ static void R_ProjectPrecipitationSprite(precipmobj_t *thing)
 
 	// specific translucency
 	if (thing->frame & FF_TRANSMASK)
-		vis->transmap = (thing->frame & FF_TRANSMASK) - 0x10000 + transtables;
+		vis->transmap = R_GetTranslucencyTable((thing->frame & FF_TRANSMASK) >> FF_TRANSSHIFT);
 	else
 		vis->transmap = NULL;
 
@@ -2544,15 +2565,19 @@ static void R_CreateDrawNodes(maskcount_t* mask, drawnode_t* head, boolean temps
 				planeobjectz = P_GetZAt(r2->plane->slope, rover->gx, rover->gy, r2->plane->height);
 				planecameraz = P_GetZAt(r2->plane->slope,     viewx,     viewy, r2->plane->height);
 
-				// bird: if any part of the sprite peeks in front the plane
-				if (planecameraz < viewz)
+				if (rover->mobjflags & MF_NOCLIPHEIGHT)
 				{
-					if (rover->gzt >= planeobjectz)
+					//Objects with NOCLIPHEIGHT can appear halfway in.
+					if (planecameraz < viewz && rover->pz+(rover->thingheight/2) >= planeobjectz)
+						continue;
+					if (planecameraz > viewz && rover->pzt-(rover->thingheight/2) <= planeobjectz)
 						continue;
 				}
-				else if (planecameraz > viewz)
+				else
 				{
-					if (rover->gz <= planeobjectz)
+					if (planecameraz < viewz && rover->pz >= planeobjectz)
+						continue;
+					if (planecameraz > viewz && rover->pzt <= planeobjectz)
 						continue;
 				}
 
@@ -2585,7 +2610,7 @@ static void R_CreateDrawNodes(maskcount_t* mask, drawnode_t* head, boolean temps
 			}
 			else if (r2->thickseg)
 			{
-				//fixed_t topplaneobjectz, topplanecameraz, botplaneobjectz, botplanecameraz;
+				fixed_t topplaneobjectz, topplanecameraz, botplaneobjectz, botplanecameraz;
 				if (rover->x1 > r2->thickseg->x2 || rover->x2 < r2->thickseg->x1)
 					continue;
 
@@ -2596,11 +2621,6 @@ static void R_CreateDrawNodes(maskcount_t* mask, drawnode_t* head, boolean temps
 				if (scale <= rover->sortscale)
 					continue;
 
-				// bird: Always sort sprites behind segs. This helps the plane
-				// sorting above too. Basically if the sprite gets sorted behind
-				// the seg here, it will be behind the plane too, since planes
-				// are added after segs in the list.
-#if 0
 				topplaneobjectz = P_GetFFloorTopZAt   (r2->ffloor, rover->gx, rover->gy);
 				topplanecameraz = P_GetFFloorTopZAt   (r2->ffloor,     viewx,     viewy);
 				botplaneobjectz = P_GetFFloorBottomZAt(r2->ffloor, rover->gx, rover->gy);
@@ -2609,7 +2629,6 @@ static void R_CreateDrawNodes(maskcount_t* mask, drawnode_t* head, boolean temps
 				if ((topplanecameraz > viewz && botplanecameraz < viewz) ||
 				    (topplanecameraz < viewz && rover->gzt < topplaneobjectz) ||
 				    (botplanecameraz > viewz && rover->gz > botplaneobjectz))
-#endif
 				{
 					entry = R_CreateDrawNode(NULL);
 					(entry->prev = r2->prev)->next = entry;
@@ -2650,11 +2669,23 @@ static void R_CreateDrawNodes(maskcount_t* mask, drawnode_t* head, boolean temps
 
 					if (!behind)
 					{
-						// FIXME: calculate gz and gzt for splats properly and use that
-						if (rover->mobj->z < viewz)
-							infront = (r2->sprite->mobj->z >= rover->mobj->z);
+						fixed_t z1 = 0, z2 = 0;
+
+						if (rover->mobj->z - viewz > 0)
+						{
+							z1 = rover->pz;
+							z2 = r2->sprite->pz;
+						}
 						else
-							infront = (r2->sprite->mobj->z <= rover->mobj->z);
+						{
+							z1 = r2->sprite->pz;
+							z2 = rover->pz;
+						}
+
+						z1 -= viewz;
+						z2 -= viewz;
+
+						infront = (z1 >= z2);
 					}
 				}
 				else
@@ -2753,7 +2784,7 @@ static void R_DrawSprite(vissprite_t *spr)
 	mceilingclip = spr->cliptop;
 
 	if (spr->cut & SC_SPLAT)
-		R_DrawFloorSprite(spr);
+		R_DrawFloorSplat(spr);
 	else
 		R_DrawVisSprite(spr);
 }
diff --git a/src/r_things.h b/src/r_things.h
index d15ae818c4c273dee396fe9c6b7919a95c87b98b..9315b36e946c35020d88a78049e18a284d9a3790 100644
--- a/src/r_things.h
+++ b/src/r_things.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -151,10 +151,12 @@ typedef struct vissprite_s
 	INT32 x1, x2;
 
 	fixed_t gx, gy; // for line side calculation
-	fixed_t gz, gzt; // global bottom/top for silhouette clipping and sorting with 3D floors
+	fixed_t gz, gzt; // global bottom/top for silhouette clipping
+	fixed_t pz, pzt; // physical bottom/top for sorting with 3D floors
 
 	fixed_t startfrac; // horizontal position of x1
-	fixed_t scale;
+	fixed_t xscale, scale; // projected horizontal and vertical scales
+	fixed_t thingscale; // the object's scale
 	fixed_t sortscale; // sortscale only differs from scale for paper sprites, floor sprites, and MF2_LINKDRAW
 	fixed_t sortsplat; // the sortscale from behind the floor sprite
 	fixed_t scalestep; // only for paper sprites, 0 otherwise
@@ -162,6 +164,7 @@ typedef struct vissprite_s
 	fixed_t xiscale; // negative if flipped
 
 	angle_t centerangle; // for paper sprites
+	angle_t viewangle; // for floor sprites, the viewpoint's current angle
 
 	struct {
 		fixed_t tan; // The amount to shear the sprite vertically per row
@@ -182,9 +185,8 @@ typedef struct vissprite_s
 
 	extracolormap_t *extra_colormap; // global colormaps
 
-	fixed_t xscale;
-
 	// Precalculated top and bottom screen coords for the sprite.
+	fixed_t thingheight; // The actual height of the thing (for 3D floors)
 	sector_t *sector; // The sector containing the thing.
 	INT16 sz, szt;
 
diff --git a/src/s_sound.c b/src/s_sound.c
index ad00fffa333193b8b9a993d97bd2895336f949a9..30f24236923a45200f40ccddd5eff680f4e98c99 100644
--- a/src/s_sound.c
+++ b/src/s_sound.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1033,11 +1033,9 @@ void S_SetSfxVolume(INT32 volume)
 
 void S_ClearSfx(void)
 {
-#ifndef DJGPPDOS
 	size_t i;
 	for (i = 1; i < NUMSFX; i++)
 		I_FreeSfx(S_sfx + i);
-#endif
 }
 
 static void S_StopChannel(INT32 cnum)
@@ -1354,28 +1352,6 @@ void S_InitSfxChannels(INT32 sfxVolume)
 /// Music
 /// ------------------------
 
-#ifdef MUSICSLOT_COMPATIBILITY
-const char *compat_special_music_slots[16] =
-{
-	"_title", // 1036  title screen
-	"_intro", // 1037  intro
-	"_clear", // 1038  level clear
-	"_inv", // 1039  invincibility
-	"_shoes",  // 1040  super sneakers
-	"_minv", // 1041  Mario invincibility
-	"_drown",  // 1042  drowning
-	"_gover", // 1043  game over
-	"_1up", // 1044  extra life
-	"_conti", // 1045  continue screen
-	"_super", // 1046  Super Sonic
-	"_chsel", // 1047  character select
-	"_creds", // 1048  credits
-	"_inter", // 1049  Race Results
-	"_stjr",   // 1050  Sonic Team Jr. Presents
-	""
-};
-#endif
-
 static char      music_name[7]; // up to 6-character name
 static void      *music_data;
 static UINT16    music_flags;
@@ -2475,7 +2451,7 @@ void S_StartEx(boolean reset)
 static void Command_Tunes_f(void)
 {
 	const char *tunearg;
-	UINT16 tunenum, track = 0;
+	UINT16 track = 0;
 	UINT32 position = 0;
 	const size_t argc = COM_Argc();
 
@@ -2491,7 +2467,6 @@ static void Command_Tunes_f(void)
 	}
 
 	tunearg = COM_Argv(1);
-	tunenum = (UINT16)atoi(tunearg);
 	track = 0;
 
 	if (!strcasecmp(tunearg, "-show"))
@@ -2510,24 +2485,14 @@ static void Command_Tunes_f(void)
 		tunearg = mapheaderinfo[gamemap-1]->musname;
 		track = mapheaderinfo[gamemap-1]->mustrack;
 	}
-	else if (!tunearg[2] && toupper(tunearg[0]) >= 'A' && toupper(tunearg[0]) <= 'Z')
-		tunenum = (UINT16)M_MapNumber(tunearg[0], tunearg[1]);
 
-	if (tunenum && tunenum >= 1036)
-	{
-		CONS_Alert(CONS_NOTICE, M_GetText("Valid music slots are 1 to 1035.\n"));
-		return;
-	}
-	if (!tunenum && strlen(tunearg) > 6) // This is automatic -- just show the error just in case
+	if (strlen(tunearg) > 6) // This is automatic -- just show the error just in case
 		CONS_Alert(CONS_NOTICE, M_GetText("Music name too long - truncated to six characters.\n"));
 
 	if (argc > 2)
 		track = (UINT16)atoi(COM_Argv(2))-1;
 
-	if (tunenum)
-		snprintf(mapmusname, 7, "%sM", G_BuildMapName(tunenum));
-	else
-		strncpy(mapmusname, tunearg, 7);
+	strncpy(mapmusname, tunearg, 7);
 
 	if (argc > 4)
 		position = (UINT32)atoi(COM_Argv(4));
diff --git a/src/s_sound.h b/src/s_sound.h
index c872c22247c24717519f5e98b527825b32cc4478..8fcb816d906accd7f63b6756d8915327a97c4bc0 100644
--- a/src/s_sound.h
+++ b/src/s_sound.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -329,10 +329,4 @@ void S_StopSoundByNum(sfxenum_t sfxnum);
 #define S_StartScreamSound S_StartSound
 #endif
 
-#ifdef MUSICSLOT_COMPATIBILITY
-// For compatibility with code/scripts relying on older versions
-// This is a list of all the "special" slot names and their associated numbers
-extern const char *compat_special_music_slots[16];
-#endif
-
 #endif
diff --git a/src/screen.c b/src/screen.c
index 9d36eee39cb1da8c2ce14e5fc1392344a9dbefc9..770f1c8026aaf4fcb5dd9df97da55271f717b547 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -33,6 +33,11 @@
 #include "s_sound.h" // ditto
 #include "g_game.h" // ditto
 #include "p_local.h" // P_AutoPause()
+#ifdef HWRENDER
+#include "hardware/hw_main.h"
+#include "hardware/hw_light.h"
+#include "hardware/hw_model.h"
+#endif
 
 
 #if defined (USEASM) && !defined (NORUSEASM)//&& (!defined (_MSC_VER) || (_MSC_VER <= 1200))
@@ -217,7 +222,7 @@ void SCR_SetMode(void)
 
 	// Set the video mode in the video interface.
 	if (setmodeneeded)
-		VID_SetMode(--setmodeneeded);
+		VID_SetMode(setmodeneeded - 1);
 
 	V_SetPalette(0);
 
@@ -423,6 +428,10 @@ void SCR_ChangeRenderer(void)
 			CONS_Alert(CONS_ERROR, "OpenGL never loaded\n");
 		return;
 	}
+
+	if (rendermode == render_opengl && (vid.glstate == VID_GL_LIBRARY_LOADED)) // Clear these out before switching to software
+		HWR_ClearAllTextures();
+
 #endif
 
 	// Set the new render mode
diff --git a/src/screen.h b/src/screen.h
index e4944775d952249c785c14262960daa8f58bc796..67880e2b964dc16a7693d754a6646bd031f14c04 100644
--- a/src/screen.h
+++ b/src/screen.h
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/sdl/MakeNIX.cfg b/src/sdl/MakeNIX.cfg
index 47c944eb5f21e8451c55374b212220fa09072360..c2f3ff0b652a9b7f7bd241f01d0f75d834a0ba19 100644
--- a/src/sdl/MakeNIX.cfg
+++ b/src/sdl/MakeNIX.cfg
@@ -18,9 +18,11 @@ endif
 #
 #here is GNU/Linux and other
 #
-
 	OPTS=-DUNIXCOMMON
 
+#Use -rdynamic so a backtrace log shows function names instead of addresses
+	LDFLAGS+=-rdynamic
+
 	#LDFLAGS = -L/usr/local/lib
 	LIBS=-lm
 ifdef LINUX
diff --git a/src/sdl/Srb2SDL-vc10.vcxproj b/src/sdl/Srb2SDL-vc10.vcxproj
index d46a4af2b0d89ea1dc93b0573e4ef1d6a32665b4..de9c4f32f9254f941b47dc0cf44646ae49d5a84d 100644
--- a/src/sdl/Srb2SDL-vc10.vcxproj
+++ b/src/sdl/Srb2SDL-vc10.vcxproj
@@ -247,6 +247,7 @@
     <ClInclude Include="..\i_tcp.h" />
     <ClInclude Include="..\i_video.h" />
     <ClInclude Include="..\keys.h" />
+    <ClInclude Include="..\libdivide.h" />
     <ClInclude Include="..\lua_hook.h" />
     <ClInclude Include="..\lua_hud.h" />
     <ClInclude Include="..\lua_libs.h" />
diff --git a/src/sdl/Srb2SDL-vc10.vcxproj.filters b/src/sdl/Srb2SDL-vc10.vcxproj.filters
index adae2f446dbde8267e375bb794eacc50bed9c663..b59d9864d958bf4db53c78e3f5787ca62ec38a6c 100644
--- a/src/sdl/Srb2SDL-vc10.vcxproj.filters
+++ b/src/sdl/Srb2SDL-vc10.vcxproj.filters
@@ -402,6 +402,9 @@
     <ClInclude Include="..\tables.h">
       <Filter>P_Play</Filter>
     </ClInclude>
+    <ClInclude Include="..\libdivide.h">
+      <Filter>R_Rend</Filter>
+    </ClInclude>
     <ClInclude Include="..\r_bsp.h">
       <Filter>R_Rend</Filter>
     </ClInclude>
diff --git a/src/sdl/hwsym_sdl.c b/src/sdl/hwsym_sdl.c
index 3985086626c4d17f157a63668627d210737d1546..96e3d7d6926ef23771c8dcf489b4d8d2a16c0a1c 100644
--- a/src/sdl/hwsym_sdl.c
+++ b/src/sdl/hwsym_sdl.c
@@ -90,7 +90,6 @@ void *hwSym(const char *funcName,void *handle)
 	GETFUNC(ReadRect);
 	GETFUNC(GClipRect);
 	GETFUNC(ClearMipMapCache);
-	GETFUNC(ClearCacheList);
 	GETFUNC(SetSpecialState);
 	GETFUNC(GetTextureUsed);
 	GETFUNC(DrawModel);
diff --git a/src/sdl/i_system.c b/src/sdl/i_system.c
index d2c819c37093ffbeaa6156f6561d2ffb7db9df50..4ad3769ab7a146dc7c61f25603d656966b913298 100644
--- a/src/sdl/i_system.c
+++ b/src/sdl/i_system.c
@@ -5,7 +5,7 @@
 //
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Portions Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
@@ -102,7 +102,7 @@ typedef LPVOID (WINAPI *p_MapViewOfFile) (HANDLE, DWORD, DWORD, DWORD, SIZE_T);
 #endif
 #endif
 
-#if (defined (__unix__) && !defined (_MSDOS)) || (defined (UNIXCOMMON) && !defined(__APPLE__))
+#if defined (__unix__) || (defined (UNIXCOMMON) && !defined (__APPLE__))
 #include <errno.h>
 #include <sys/wait.h>
 #define NEWSIGNALHANDLER
@@ -137,6 +137,12 @@ typedef LPVOID (WINAPI *p_MapViewOfFile) (HANDLE, DWORD, DWORD, DWORD, SIZE_T);
 #include <errno.h>
 #endif
 
+#if defined (__unix__) || defined(__APPLE__) || defined (UNIXCOMMON)
+#include <execinfo.h>
+#include <time.h>
+#define UNIXBACKTRACE
+#endif
+
 // Locations for searching the srb2.pk3
 #if defined (__unix__) || defined(__APPLE__) || defined (UNIXCOMMON)
 #define DEFAULTWADLOCATION1 "/usr/local/share/games/SRB2"
@@ -238,6 +244,71 @@ SDL_bool framebuffer = SDL_FALSE;
 
 UINT8 keyboard_started = false;
 
+#ifdef UNIXBACKTRACE
+#define STDERR_WRITE(string) if (fd != -1) I_OutputMsg("%s", string)
+#define CRASHLOG_WRITE(string) if (fd != -1) write(fd, string, strlen(string))
+#define CRASHLOG_STDERR_WRITE(string) \
+	if (fd != -1)\
+		write(fd, string, strlen(string));\
+	I_OutputMsg("%s", string)
+
+static void write_backtrace(INT32 signal)
+{
+	int fd = -1;
+	size_t size;
+	time_t rawtime;
+	struct tm timeinfo;
+
+	enum { BT_SIZE = 1024, STR_SIZE = 32 };
+	void *array[BT_SIZE];
+	char timestr[STR_SIZE];
+
+	const char *error = "An error occurred within SRB2! Send this stack trace to someone who can help!\n";
+	const char *error2 = "(Or find crash-log.txt in your SRB2 directory.)\n"; // Shown only to stderr.
+
+	fd = open(va("%s" PATHSEP "%s", srb2home, "crash-log.txt"), O_CREAT|O_APPEND|O_RDWR, S_IRUSR|S_IWUSR);
+
+	if (fd == -1)
+		I_OutputMsg("\nWARNING: Couldn't open crash log for writing! Make sure your permissions are correct. Please save the below report!\n");
+
+	// Get the current time as a string.
+	time(&rawtime);
+	localtime_r(&rawtime, &timeinfo);
+	strftime(timestr, STR_SIZE, "%a, %d %b %Y %T %z", &timeinfo);
+
+	CRASHLOG_WRITE("------------------------\n"); // Nice looking seperator
+
+	CRASHLOG_STDERR_WRITE("\n"); // Newline to look nice for both outputs.
+	CRASHLOG_STDERR_WRITE(error); // "Oops, SRB2 crashed" message
+	STDERR_WRITE(error2); // Tell the user where the crash log is.
+
+	// Tell the log when we crashed.
+	CRASHLOG_WRITE("Time of crash: ");
+	CRASHLOG_WRITE(timestr);
+	CRASHLOG_WRITE("\n");
+
+	// Give the crash log the cause and a nice 'Backtrace:' thing
+	// The signal is given to the user when the parent process sees we crashed.
+	CRASHLOG_WRITE("Cause: ");
+	CRASHLOG_WRITE(strsignal(signal));
+	CRASHLOG_WRITE("\n"); // Newline for the signal name
+
+	CRASHLOG_STDERR_WRITE("\nBacktrace:\n");
+
+	// Flood the output and log with the backtrace
+	size = backtrace(array, BT_SIZE);
+	backtrace_symbols_fd(array, size, fd);
+	backtrace_symbols_fd(array, size, STDERR_FILENO);
+
+	CRASHLOG_WRITE("\n"); // Write another newline to the log so it looks nice :)
+
+	close(fd);
+}
+#undef STDERR_WRITE
+#undef CRASHLOG_WRITE
+#undef CRASHLOG_STDERR_WRITE
+#endif // UNIXBACKTRACE
+
 static void I_ReportSignal(int num, int coredumped)
 {
 	//static char msg[] = "oh no! back to reality!\r\n";
@@ -297,6 +368,9 @@ FUNCNORETURN static ATTRNORETURN void signal_handler(INT32 num)
 {
 	D_QuitNetGame(); // Fix server freezes
 	CL_AbortDownloadResume();
+#ifdef UNIXBACKTRACE
+	write_backtrace(num);
+#endif
 	I_ReportSignal(num, 0);
 	I_ShutdownSystem();
 	signal(num, SIG_DFL);               //default signal action
@@ -687,6 +761,28 @@ static void I_RegisterSignals (void)
 #endif
 }
 
+#ifdef NEWSIGNALHANDLER
+static void signal_handler_child(INT32 num)
+{
+#ifdef UNIXBACKTRACE
+	write_backtrace(num);
+#endif
+
+	signal(num, SIG_DFL);               //default signal action
+	raise(num);
+}
+
+static void I_RegisterChildSignals(void)
+{
+	// If these defines don't exist,
+	// then compilation would have failed above us...
+	signal(SIGILL , signal_handler_child);
+	signal(SIGSEGV , signal_handler_child);
+	signal(SIGABRT , signal_handler_child);
+	signal(SIGFPE , signal_handler_child);
+}
+#endif
+
 //
 //I_OutputMsg
 //
@@ -2123,6 +2219,7 @@ static void I_Fork(void)
 			newsignalhandler_Warn("fork()");
 			break;
 		case 0:
+			I_RegisterChildSignals();
 			break;
 		default:
 			if (logstream)
diff --git a/src/sdl/i_threads.c b/src/sdl/i_threads.c
index 3b1c20b9a3cbb79038253b4bd5b7dbec3df001d7..f73d00bcfc2ee70eba47f432812ec8cb4db7ec39 100644
--- a/src/sdl/i_threads.c
+++ b/src/sdl/i_threads.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2020 by James R.
+// Copyright (C) 2020-2021 by James R.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/sdl/i_video.c b/src/sdl/i_video.c
index 0bdb70d1ff31b539abd7986891099f180a1d654a..208c2706bdd552c73fa917a990e9046777406d75 100644
--- a/src/sdl/i_video.c
+++ b/src/sdl/i_video.c
@@ -4,7 +4,7 @@
 //
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Portions Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
@@ -1862,7 +1862,6 @@ void VID_StartupOpenGL(void)
 		HWD.pfnReadRect         = hwSym("ReadRect",NULL);
 		HWD.pfnGClipRect        = hwSym("GClipRect",NULL);
 		HWD.pfnClearMipMapCache = hwSym("ClearMipMapCache",NULL);
-		HWD.pfnClearCacheList   = hwSym("ClearCacheList",NULL);
 		HWD.pfnSetSpecialState  = hwSym("SetSpecialState",NULL);
 		HWD.pfnSetPalette       = hwSym("SetPalette",NULL);
 		HWD.pfnGetTextureUsed   = hwSym("GetTextureUsed",NULL);
diff --git a/src/sdl/mixer_sound.c b/src/sdl/mixer_sound.c
index 5cae480772f31e232213c4467eb4928f5db65d6f..2f1a872669443c033d882940fafd43689518265e 100644
--- a/src/sdl/mixer_sound.c
+++ b/src/sdl/mixer_sound.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -1298,10 +1298,10 @@ boolean I_PlaySong(boolean looping)
 	if (gme)
 	{
 		gme_equalizer_t eq = {GME_TREBLE, GME_BASS, 0,0,0,0,0,0,0,0};
-#if GME_VERSION >= 0x000603
+#if defined (GME_VERSION) && GME_VERSION >= 0x000603
 		if (looping)
 			gme_set_autoload_playback_limit(gme, 0);
-#endif        
+#endif
 		gme_set_equalizer(gme, &eq);
 		gme_start_track(gme, 0);
 		current_track = 0;
diff --git a/src/sdl/ogl_sdl.c b/src/sdl/ogl_sdl.c
index 52727c05600a5f33221e729d51263b08fcdde30b..c426e6792f6c8116c52615a27f997e63e9f2b275 100644
--- a/src/sdl/ogl_sdl.c
+++ b/src/sdl/ogl_sdl.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 //
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
diff --git a/src/sdl/ogl_sdl.h b/src/sdl/ogl_sdl.h
index 748e30bae06036c2785cb249e92f6798dc67f4f1..8f87f688e36a4b897268c1f0fb3f55747779b908 100644
--- a/src/sdl/ogl_sdl.h
+++ b/src/sdl/ogl_sdl.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 //
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
diff --git a/src/sdl/sdl_sound.c b/src/sdl/sdl_sound.c
index 86e294fb57457d09539834ab268d0c9f62dc5360..058b601c350072e93f41bae736a89f432d5d79cf 100644
--- a/src/sdl/sdl_sound.c
+++ b/src/sdl/sdl_sound.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 //
 // Copyright (C) 1993-1996 by id Software, Inc.
-// Copyright (C) 2014-2020 by Sonic Team Junior.
+// Copyright (C) 2014-2021 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
diff --git a/src/sdl/sdlmain.h b/src/sdl/sdlmain.h
index e35506114e2ebdd0c5f32fccc8c765e9cbe9bcb7..a9676b5c2f1261bbc7aab49d0ada71e4cba50f91 100644
--- a/src/sdl/sdlmain.h
+++ b/src/sdl/sdlmain.h
@@ -1,7 +1,7 @@
 // Emacs style mode select   -*- C++ -*-
 //-----------------------------------------------------------------------------
 //
-// Copyright (C) 2006-2020 by Sonic Team Junior.
+// Copyright (C) 2006-2021 by Sonic Team Junior.
 //
 // This program is free software; you can redistribute it and/or
 // modify it under the terms of the GNU General Public License
diff --git a/src/sounds.c b/src/sounds.c
index 092bda21f2f3fa28ab3fc1dd5e14716981506e56..4c5b11ee98294cf21662512c87eb2c566cae7069 100644
--- a/src/sounds.c
+++ b/src/sounds.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/sounds.h b/src/sounds.h
index e49dd2f3e3e9eac78401c48e2ed5f00d59dfb8a7..2dd37953c5750e87f2f904ffa11dc17d413611af 100644
--- a/src/sounds.h
+++ b/src/sounds.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/st_stuff.c b/src/st_stuff.c
index 64964462094e8ce837da9c07f5a74209d85761f9..af14118e36cb87bb0475982345bba8bd1943306f 100644
--- a/src/st_stuff.c
+++ b/src/st_stuff.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -299,10 +299,6 @@ void ST_LoadGraphics(void)
 	gravboots = W_CachePatchName("TVGVICON", PU_HUDGFX);
 
 	tagico = W_CachePatchName("TAGICO", PU_HUDGFX);
-	rflagico = W_CachePatchName("RFLAGICO", PU_HUDGFX);
-	bflagico = W_CachePatchName("BFLAGICO", PU_HUDGFX);
-	rmatcico = W_CachePatchName("RMATCICO", PU_HUDGFX);
-	bmatcico = W_CachePatchName("BMATCICO", PU_HUDGFX);
 	gotrflag = W_CachePatchName("GOTRFLAG", PU_HUDGFX);
 	gotbflag = W_CachePatchName("GOTBFLAG", PU_HUDGFX);
 	fnshico = W_CachePatchName("FNSHICO", PU_HUDGFX);
@@ -1371,7 +1367,7 @@ void ST_drawTitleCard(void)
 		zzticker = lt_ticker;
 		V_DrawMappedPatch(FixedInt(lt_zigzag), (-zzticker) % zigzag->height, V_SNAPTOTOP|V_SNAPTOLEFT, zigzag, colormap);
 		V_DrawMappedPatch(FixedInt(lt_zigzag), (zigzag->height-zzticker) % zigzag->height, V_SNAPTOTOP|V_SNAPTOLEFT, zigzag, colormap);
-		V_DrawMappedPatch(FixedInt(lt_zigzag), (-zigzag->height+zzticker) % zztext->height, V_SNAPTOTOP|V_SNAPTOLEFT, zztext, colormap);
+		V_DrawMappedPatch(FixedInt(lt_zigzag), (-zztext->height+zzticker) % zztext->height, V_SNAPTOTOP|V_SNAPTOLEFT, zztext, colormap);
 		V_DrawMappedPatch(FixedInt(lt_zigzag), (zzticker) % zztext->height, V_SNAPTOTOP|V_SNAPTOLEFT, zztext, colormap);
 	}
 
@@ -2363,27 +2359,29 @@ static inline void ST_drawRaceHUD(void)
 
 static void ST_drawTeamHUD(void)
 {
-	patch_t *p;
 #define SEP 20
 
 	if (F_GetPromptHideHud(0)) // y base is 0
 		return;
 
-	if (gametyperules & GTR_TEAMFLAGS)
-		p = bflagico;
-	else
-		p = bmatcico;
-
-	if (LUA_HudEnabled(hud_teamscores))
-		V_DrawSmallScaledPatch(BASEVIDWIDTH/2 - SEP - (p->width / 4), 4, V_HUDTRANS|V_PERPLAYER|V_SNAPTOTOP, p);
-
-	if (gametyperules & GTR_TEAMFLAGS)
-		p = rflagico;
-	else
-		p = rmatcico;
+	rflagico = W_CachePatchName("RFLAGICO", PU_HUDGFX);
+	bflagico = W_CachePatchName("BFLAGICO", PU_HUDGFX);
+	rmatcico = W_CachePatchName("RMATCICO", PU_HUDGFX);
+	bmatcico = W_CachePatchName("BMATCICO", PU_HUDGFX);
 
 	if (LUA_HudEnabled(hud_teamscores))
-		V_DrawSmallScaledPatch(BASEVIDWIDTH/2 + SEP - (p->width / 4), 4, V_HUDTRANS|V_PERPLAYER|V_SNAPTOTOP, p);
+	{
+		if (gametyperules & GTR_TEAMFLAGS)
+		{
+			V_DrawSmallScaledPatch(BASEVIDWIDTH/2 - SEP - (bflagico->width / 4), 4, V_HUDTRANS|V_PERPLAYER|V_SNAPTOTOP, bflagico);
+			V_DrawSmallScaledPatch(BASEVIDWIDTH/2 + SEP - (rflagico->width / 4), 4, V_HUDTRANS|V_PERPLAYER|V_SNAPTOTOP, rflagico);
+		}
+		else
+		{
+			V_DrawSmallScaledPatch(BASEVIDWIDTH/2 - SEP - (bmatcico->width / 4), 4, V_HUDTRANS|V_PERPLAYER|V_SNAPTOTOP, bmatcico);
+			V_DrawSmallScaledPatch(BASEVIDWIDTH/2 + SEP - (rmatcico->width / 4), 4, V_HUDTRANS|V_PERPLAYER|V_SNAPTOTOP, rmatcico);
+		}
+	}
 
 	if (!(gametyperules & GTR_TEAMFLAGS))
 		goto num;
diff --git a/src/st_stuff.h b/src/st_stuff.h
index 4ea307d2b45c6cdcd91dd345755f9b18029237a0..b1ea2942d3be73188a1a8a4905f27b5a38b5758f 100644
--- a/src/st_stuff.h
+++ b/src/st_stuff.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/strcasestr.c b/src/strcasestr.c
index b266278ede5a7f338d3b7cb77f068671309b2a6c..1cbee286a433a722dcb0b95a25fa5dccf64485c9 100644
--- a/src/strcasestr.c
+++ b/src/strcasestr.c
@@ -2,7 +2,7 @@
 strcasestr -- case insensitive substring searching function.
 */
 /*
-Copyright 2019-2020 James R.
+Copyright 2019-2021 James R.
 All rights reserved.
 
 Redistribution and use in source forms, with or without modification, is
diff --git a/src/string.c b/src/string.c
index e430c5cc340ba3a1a98dd1a99ee661ecd52b333f..f32025612283c02e7da2522be5c94fe8596efc56 100644
--- a/src/string.c
+++ b/src/string.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2006      by Graue.
-// Copyright (C) 2006-2020 by Sonic Team Junior.
+// Copyright (C) 2006-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/tables.c b/src/tables.c
index 70a1ecd0addf7fae640d44847f7ffec8c70d8278..9263f42d327f679e10a9a3899acd81eee4171ddf 100644
--- a/src/tables.c
+++ b/src/tables.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/tables.h b/src/tables.h
index 953d891ce8b1c519ca0db3143a20f2645d747eee..baa3adf36de62eb88cb31dfed7e2dcd535205f50 100644
--- a/src/tables.h
+++ b/src/tables.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/taglist.c b/src/taglist.c
index a759f4d02bfc0658ea68a6b6becd20dffaad7700..ad1b9dc4b52e2a6a8cf6d117a0bbff722ec07ccf 100644
--- a/src/taglist.c
+++ b/src/taglist.c
@@ -1,8 +1,8 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
-// Copyright (C)      2020 by Nev3r.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Nev3r.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -27,11 +27,13 @@ taggroup_t* tags_sectors[MAXTAGS + 1];
 taggroup_t* tags_lines[MAXTAGS + 1];
 taggroup_t* tags_mapthings[MAXTAGS + 1];
 
-/// Adds a tag to a given element's taglist.
+/// Adds a tag to a given element's taglist. It will not add a duplicate.
 /// \warning This does not rebuild the global taggroups, which are used for iteration.
 void Tag_Add (taglist_t* list, const mtag_t tag)
 {
-	list->tags = Z_Realloc(list->tags, (list->count + 1) * sizeof(list->tags), PU_LEVEL, NULL);
+	if (Tag_Find(list, tag))
+		return;
+	list->tags = Z_Realloc(list->tags, (list->count + 1) * sizeof(mtag_t), PU_LEVEL, NULL);
 	list->tags[list->count++] = tag;
 }
 
diff --git a/src/taglist.h b/src/taglist.h
index a0529ab6b6afae4fe4252e61fd5848e2bd875ef6..d045eb8276011c22d049111fca82869f0b3b857b 100644
--- a/src/taglist.h
+++ b/src/taglist.h
@@ -1,8 +1,8 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
-// Copyright (C)      2020 by Nev3r.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
+// Copyright (C) 2020-2021 by Nev3r.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -71,25 +71,16 @@ INT32 Tag_Iterate_Things (const mtag_t tag, const size_t p);
 INT32 Tag_FindLineSpecial(const INT16 special, const mtag_t tag);
 INT32 P_FindSpecialLineFromTag(INT16 special, INT16 tag, INT32 start);
 
-// Use this macro to declare an iterator position variable.
-#define TAG_ITER_DECLARECOUNTER(level) size_t ICNT_##level
-
-#define TAG_ITER(level, fn, tag, return_varname) for(ICNT_##level = 0; (return_varname = fn(tag, ICNT_##level)) >= 0; ICNT_##level++)
+#define ICNAME2(id) ICNT_##id
+#define ICNAME(id) ICNAME2(id)
+#define TAG_ITER(fn, tag, return_varname) for(size_t ICNAME(__LINE__) = 0; (return_varname = fn(tag, ICNAME(__LINE__))) >= 0; ICNAME(__LINE__)++)
 
 // Use these macros as wrappers for a taglist iteration.
-#define TAG_ITER_SECTORS(level, tag, return_varname) TAG_ITER(level, Tag_Iterate_Sectors, tag, return_varname)
-#define TAG_ITER_LINES(level, tag, return_varname)   TAG_ITER(level, Tag_Iterate_Lines, tag, return_varname)
-#define TAG_ITER_THINGS(level, tag, return_varname)  TAG_ITER(level, Tag_Iterate_Things, tag, return_varname)
+#define TAG_ITER_SECTORS(tag, return_varname) TAG_ITER(Tag_Iterate_Sectors, tag, return_varname)
+#define TAG_ITER_LINES(tag, return_varname)   TAG_ITER(Tag_Iterate_Lines, tag, return_varname)
+#define TAG_ITER_THINGS(tag, return_varname)  TAG_ITER(Tag_Iterate_Things, tag, return_varname)
 
 /* ITERATION MACROS
-TAG_ITER_DECLARECOUNTER must be used before using the iterators.
-
-'level':
-For each nested iteration, an additional TAG_ITER_DECLARECOUNTER
-must be used with a different level number to avoid conflict with
-the outer iterations.
-Most cases don't have nested iterations and thus the level is just 0.
-
 'tag':
 Pretty much the elements' tag to iterate through.
 
@@ -99,17 +90,12 @@ Target variable's name to return the iteration results to.
 
 EXAMPLE:
 {
-	TAG_ITER_DECLARECOUNTER(0);
-	TAG_ITER_DECLARECOUNTER(1); // For the nested iteration.
-
 	size_t li;
-	size_t sec;
-
 	INT32 tag1 = 4;
 
 	...
 
-	TAG_ITER_LINES(0, tag1, li)
+	TAG_ITER_LINES(tag1, li)
 	{
 		line_t *line = lines + li;
 
@@ -117,11 +103,11 @@ EXAMPLE:
 
 		if (something)
 		{
+			size_t sec;
 			mtag_t tag2 = 8;
 
-			// Nested iteration; just make sure the level is higher
-			// and that it has its own counter declared in scope.
-			TAG_ITER_SECTORS(1, tag2, sec)
+			// Nested iteration.
+			TAG_ITER_SECTORS(tag2, sec)
 			{
 				sector_t *sector = sectors + sec;
 
diff --git a/src/tmap.nas b/src/tmap.nas
index 69282d0b471dd2c86802df544f4a346e4b96baa9..5bf28359e6b75b1753e94eea8d0fa77b077978b8 100644
--- a/src/tmap.nas
+++ b/src/tmap.nas
@@ -1,7 +1,7 @@
 ;; SONIC ROBO BLAST 2
 ;;-----------------------------------------------------------------------------
 ;; Copyright (C) 1998-2000 by DooM Legacy Team.
-;; Copyright (C) 1999-2020 by Sonic Team Junior.
+;; Copyright (C) 1999-2021 by Sonic Team Junior.
 ;;
 ;; This program is free software distributed under the
 ;; terms of the GNU General Public License, version 2.
diff --git a/src/tmap.s b/src/tmap.s
index 3a4cf2e1a1bcca125f3745ef252d83075ae2dce4..62dcf85dcc00ed350e3bf145e03eedb885e4ee6a 100644
--- a/src/tmap.s
+++ b/src/tmap.s
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/tmap_asm.s b/src/tmap_asm.s
index 3cd0f87cc5c58e430663d6cc95d0467f76272588..b5a0a51e91dd00f330b33d2cf0ca9cee60373323 100644
--- a/src/tmap_asm.s
+++ b/src/tmap_asm.s
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/tmap_mmx.nas b/src/tmap_mmx.nas
index 15b97499de530b346f85a2b6545a2f1d2843c2a2..8b6ef91a60aeff852abee8824eb8f49a6572df92 100644
--- a/src/tmap_mmx.nas
+++ b/src/tmap_mmx.nas
@@ -1,7 +1,7 @@
 ;; SONIC ROBO BLAST 2
 ;;-----------------------------------------------------------------------------
 ;; Copyright (C) 1998-2000 by DOSDOOM.
-;; Copyright (C) 2010-2020 by Sonic Team Junior.
+;; Copyright (C) 2010-2021 by Sonic Team Junior.
 ;;
 ;; This program is free software distributed under the
 ;; terms of the GNU General Public License, version 2.
diff --git a/src/tmap_vc.nas b/src/tmap_vc.nas
index 49eb21a6d3c7823921bc67e7a951d410e6af56c8..b6ee26e6b8f22d481b419dac46227b010f78058f 100644
--- a/src/tmap_vc.nas
+++ b/src/tmap_vc.nas
@@ -1,7 +1,7 @@
 ;; SONIC ROBO BLAST 2
 ;;-----------------------------------------------------------------------------
 ;; Copyright (C) 1998-2000 by DooM Legacy Team.
-;; Copyright (C) 1999-2020 by Sonic Team Junior.
+;; Copyright (C) 1999-2021 by Sonic Team Junior.
 ;;
 ;; This program is free software distributed under the
 ;; terms of the GNU General Public License, version 2.
diff --git a/src/v_video.c b/src/v_video.c
index 4713db0d89dda23a656f3df9ace63db9fba52902..de05df2d5df2bacb4d6d9b2d11c5c221fa9ab8fe 100644
--- a/src/v_video.c
+++ b/src/v_video.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -418,7 +418,7 @@ void V_SetPalette(INT32 palettenum)
 #ifdef HWRENDER
 	if (rendermode == render_opengl)
 		HWR_SetPalette(&pLocalPalette[palettenum*256]);
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	else
 #endif
 #endif
@@ -432,7 +432,7 @@ void V_SetPaletteLump(const char *pal)
 #ifdef HWRENDER
 	if (rendermode == render_opengl)
 		HWR_SetPalette(pLocalPalette);
-#if (defined (__unix__) && !defined (MSDOS)) || defined (UNIXCOMMON) || defined (HAVE_SDL)
+#if defined (__unix__) || defined (UNIXCOMMON) || defined (HAVE_SDL)
 	else
 #endif
 #endif
@@ -455,7 +455,8 @@ void VID_BlitLinearScreen_ASM(const UINT8 *srcptr, UINT8 *destptr, INT32 width,
 
 static void CV_constextsize_OnChange(void)
 {
-	con_recalc = true;
+	if (!con_refresh)
+		con_recalc = true;
 }
 
 
diff --git a/src/v_video.h b/src/v_video.h
index 8a18f82ad7ab834988e672e3f5c21189764876b6..7184e799e5ff981a48db6694019bb1b62b01b6f2 100644
--- a/src/v_video.h
+++ b/src/v_video.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/version.h b/src/version.h
index ece084beb2ddaed925f436d78fcfd290d94c57c5..4470fbd6eaf02397d02f890daf0412822ea70cd1 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1,4 +1,4 @@
-#define SRB2VERSION "2.2.8"/* this must be the first line, for cmake !! */
+#define SRB2VERSION "2.2.9"/* this must be the first line, for cmake !! */
 
 // The Modification ID; must be obtained from a Master Server Admin ( https://mb.srb2.org/showgroups.php ).
 // DO NOT try to set this otherwise, or your modification will be unplayable through the Master Server.
@@ -9,7 +9,7 @@
 // it's only for detection of the version the player is using so the MS can alert them of an update.
 // Only set it higher, not lower, obviously.
 // Note that we use this to help keep internal testing in check; this is why v2.2.0 is not version "1".
-#define MODVERSION 49
+#define MODVERSION 50
 
 // Define this as a prerelease version suffix
 // #define BETAVERSION "RC1"
diff --git a/src/vid_copy.s b/src/vid_copy.s
index eae435ea4cd2ea512ad82c5d7aef29abfc2ce7aa..6a37883565f57023f5687d8c31e2de56d72b288a 100644
--- a/src/vid_copy.s
+++ b/src/vid_copy.s
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/w_wad.c b/src/w_wad.c
index 6566800c03ce0594898d4bb50026b5bc55eb3f67..cbff5c67be89de92af1f858ea32d2b7dfb55c688 100644
--- a/src/w_wad.c
+++ b/src/w_wad.c
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -821,7 +821,10 @@ UINT16 W_InitFile(const char *filename, boolean mainfile, boolean startup)
 	}
 
 	if (important && !mainfile)
-		G_SetGameModified(true);
+	{
+		//G_SetGameModified(true);
+		modifiedgame = true; // avoid savemoddata being set to false
+	}
 
 	//
 	// link wad file to search files
@@ -1682,26 +1685,12 @@ void *W_CacheSoftwarePatchNumPwad(UINT16 wad, UINT16 lump, INT32 tag)
 
 		// read the lump in full
 		W_ReadLumpHeaderPwad(wad, lump, lumpdata, 0, 0);
+		ptr = lumpdata;
 
 #ifndef NO_PNG_LUMPS
-		// lump is a png so convert it
 		if (Picture_IsLumpPNG((UINT8 *)lumpdata, len))
-		{
-			size_t newlen;
-			void *converted = Picture_PNGConvert((UINT8 *)lumpdata, PICFMT_DOOMPATCH, NULL, NULL, NULL, NULL, len, &newlen, 0);
-			ptr = Z_Malloc(newlen, PU_STATIC, NULL);
-			M_Memcpy(ptr, converted, newlen);
-			Z_Free(converted);
-			len = newlen;
-		}
-		else // just copy it into the patch cache
+			ptr = Picture_PNGConvert((UINT8 *)lumpdata, PICFMT_DOOMPATCH, NULL, NULL, NULL, NULL, len, &len, 0);
 #endif
-		{
-			ptr = Z_Malloc(len, PU_STATIC, NULL);
-			M_Memcpy(ptr, lumpdata, len);
-		}
-
-		Z_Free(lumpdata);
 
 		dest = Z_Calloc(sizeof(patch_t), tag, &lumpcache[lump]);
 		Patch_Create(ptr, len, dest);
diff --git a/src/w_wad.h b/src/w_wad.h
index d0a86bcb44817b678fdda16fd426692cc222c89a..1309677128da4005e4d4b4c37e0d256ede5c285e 100644
--- a/src/w_wad.h
+++ b/src/w_wad.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/win32/Srb2win.rc b/src/win32/Srb2win.rc
index d5d59922c113a29af52c673700d8600b8be7804f..0a280448b48b13d4dc5c09cc674e4213f87a9995 100644
--- a/src/win32/Srb2win.rc
+++ b/src/win32/Srb2win.rc
@@ -76,8 +76,8 @@ END
 #include "../doomdef.h" // Needed for version string
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 2,2,8,0
- PRODUCTVERSION 2,2,8,0
+ FILEVERSION 2,2,9,0
+ PRODUCTVERSION 2,2,9,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -97,7 +97,7 @@ BEGIN
             VALUE "FileDescription", "Sonic Robo Blast 2\0"
             VALUE "FileVersion", VERSIONSTRING_RC
             VALUE "InternalName", "srb2\0"
-            VALUE "LegalCopyright", "Copyright 1998-2020 by Sonic Team Junior\0"
+            VALUE "LegalCopyright", "Copyright 1998-2021 by Sonic Team Junior\0"
             VALUE "LegalTrademarks", "Sonic the Hedgehog and related characters are trademarks of Sega.\0"
             VALUE "OriginalFilename", "srb2win.exe\0"
             VALUE "PrivateBuild", "\0"
diff --git a/src/win32/win_dll.c b/src/win32/win_dll.c
index d942d8cd406ad55b85b0e1bdd768631588f244ec..4743cec34b2e6af738caeec60d7c179e58ec14d1 100644
--- a/src/win32/win_dll.c
+++ b/src/win32/win_dll.c
@@ -111,7 +111,6 @@ static loadfunc_t hwdFuncTable[] = {
 	{"ReadRect@24",         &hwdriver.pfnReadRect},
 	{"GClipRect@20",        &hwdriver.pfnGClipRect},
 	{"ClearMipMapCache@0",  &hwdriver.pfnClearMipMapCache},
-	{"ClearCacheList@0",    &hwdriver.pfnClearCacheList},
 	{"SetSpecialState@8",   &hwdriver.pfnSetSpecialState},
 	{"DrawModel@16",        &hwdriver.pfnDrawModel},
 	{"SetTransform@4",      &hwdriver.pfnSetTransform},
@@ -145,7 +144,6 @@ static loadfunc_t hwdFuncTable[] = {
 	{"ReadRect",            &hwdriver.pfnReadRect},
 	{"GClipRect",           &hwdriver.pfnGClipRect},
 	{"ClearMipMapCache",    &hwdriver.pfnClearMipMapCache},
-	{"ClearCacheList",      &hwdriver.pfnClearCacheList},
 	{"SetSpecialState",     &hwdriver.pfnSetSpecialState},
 	{"DrawModel",           &hwdriver.pfnDrawModel},
 	{"SetTransform",        &hwdriver.pfnSetTransform},
diff --git a/src/y_inter.c b/src/y_inter.c
index 384fbc1946e9ea2b71b8ae0d3ee34ea6a65da072..6d876d7bdbf1a5d846e74eed2d34a284dfe03d22 100644
--- a/src/y_inter.c
+++ b/src/y_inter.c
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2004-2020 by Sonic Team Junior.
+// Copyright (C) 2004-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -215,6 +215,89 @@ static void Y_IntermissionTokenDrawer(void)
 		V_DrawCroppedPatch(32<<FRACBITS, y<<FRACBITS, FRACUNIT/2, 0, tokenicon, 0, 0, tokenicon->width, calc);
 }
 
+
+//
+// Y_LoadIntermissionData
+//
+// Load patches for drawing the intermission, if acceptable
+//
+void Y_LoadIntermissionData(void)
+{
+	INT32 i;
+
+	if (dedicated)
+		return;
+
+	switch (intertype)
+	{
+		case int_coop:
+		{
+			for (i = 0; i < 4; ++i)
+			{
+				if (strlen(data.coop.bonuses[i].patch))
+					data.coop.bonuspatches[i] = W_CachePatchName(data.coop.bonuses[i].patch, PU_PATCH);
+			}
+			data.coop.ptotal = W_CachePatchName("YB_TOTAL", PU_PATCH);
+
+			// get background patches
+			bgpatch = W_CachePatchName("INTERSCR", PU_PATCH);
+
+			// grab an interscreen if appropriate
+			if (mapheaderinfo[gamemap-1]->interscreen[0] != '#')
+				interpic = W_CachePatchName(mapheaderinfo[gamemap-1]->interscreen, PU_PATCH);
+			break;
+		}
+		case int_spec:
+		{
+			for (i = 0; i < 2; ++i)
+				data.spec.bonuspatches[i] = W_CachePatchName(data.spec.bonuses[i].patch, PU_PATCH);
+
+			data.spec.pscore = W_CachePatchName("YB_SCORE", PU_PATCH);
+			data.spec.pcontinues = W_CachePatchName("YB_CONTI", PU_PATCH);
+
+			// get background tile
+			bgtile = W_CachePatchName("SPECTILE", PU_PATCH);
+
+			// grab an interscreen if appropriate
+			if (mapheaderinfo[gamemap-1]->interscreen[0] != '#')
+				interpic = W_CachePatchName(mapheaderinfo[gamemap-1]->interscreen, PU_PATCH);
+			break;
+		}
+		case int_ctf:
+		case int_teammatch:
+		{
+			if (!rflagico) //prevent a crash if we haven't cached our team graphics yet
+			{
+				rflagico = W_CachePatchName("RFLAGICO", PU_HUDGFX);
+				bflagico = W_CachePatchName("BFLAGICO", PU_HUDGFX);
+				rmatcico = W_CachePatchName("RMATCICO", PU_HUDGFX);
+				bmatcico = W_CachePatchName("BMATCICO", PU_HUDGFX);
+			}
+
+			data.match.redflag = (intertype == int_ctf) ? rflagico : rmatcico;
+			data.match.blueflag = (intertype == int_ctf) ? bflagico : bmatcico;
+		}
+		/* FALLTHRU */
+		case int_match:
+		case int_race:
+		case int_comp:
+		{
+			if (intertype == int_match || intertype == int_race)
+			{
+				// get RESULT header
+				data.match.result = W_CachePatchName("RESULT", PU_PATCH);
+			}
+
+			// get background tile
+			bgtile = W_CachePatchName("SRB2BACK", PU_PATCH);
+			break;
+		}
+		case int_none:
+		default:
+			break;
+	}
+}
+
 //
 // Y_ConsiderScreenBuffer
 //
@@ -347,7 +430,7 @@ void Y_IntermissionDrawer(void)
 	else if (bgtile)
 		V_DrawPatchFill(bgtile);
 
-	LUAh_IntermissionHUD();
+	LUAh_IntermissionHUD(intertype == int_spec && stagefailed);
 	if (!LUA_HudEnabled(hud_intermissiontally))
 		goto skiptallydrawer;
 
@@ -388,14 +471,17 @@ void Y_IntermissionDrawer(void)
 			}
 		}
 
-		// draw the "got through act" lines and act number
-		V_DrawLevelTitle(data.coop.passedx1, 49, 0, data.coop.passed1);
+		if (LUA_HudEnabled(hud_intermissiontitletext))
 		{
-			INT32 h = V_LevelNameHeight(data.coop.passed2);
-			V_DrawLevelTitle(data.coop.passedx2, 49+h+2, 0, data.coop.passed2);
+			// draw the "got through act" lines and act number
+			V_DrawLevelTitle(data.coop.passedx1, 49, 0, data.coop.passed1);
+			{
+				INT32 h = V_LevelNameHeight(data.coop.passed2);
+				V_DrawLevelTitle(data.coop.passedx2, 49+h+2, 0, data.coop.passed2);
 
-			if (data.coop.actnum)
-				V_DrawLevelActNum(244, 42+h, 0, data.coop.actnum);
+				if (data.coop.actnum)
+					V_DrawLevelActNum(244, 42+h, 0, data.coop.actnum);
+			}
 		}
 
 		bonusy = 150;
@@ -479,37 +565,44 @@ void Y_IntermissionDrawer(void)
 
 		if (drawsection == 1)
 		{
-			const char *ringtext = "\x82" "50 rings, no shield";
-			const char *tut1text = "\x82" "press " "\x80" "spin";
-			const char *tut2text = "\x82" "mid-" "\x80" "jump";
-			ttheight = 8;
-			V_DrawLevelTitle(data.spec.passedx1 + xoffset1, ttheight, 0, data.spec.passed1);
-			ttheight += V_LevelNameHeight(data.spec.passed3) + 2;
-			V_DrawLevelTitle(data.spec.passedx3 + xoffset2, ttheight, 0, data.spec.passed3);
-			ttheight += V_LevelNameHeight(data.spec.passed4) + 2;
-			V_DrawLevelTitle(data.spec.passedx4 + xoffset3, ttheight, 0, data.spec.passed4);
-
-			ttheight = 108;
-			V_DrawLevelTitle(BASEVIDWIDTH/2 + xoffset4 - (V_LevelNameWidth(ringtext)/2), ttheight, 0, ringtext);
-			ttheight += V_LevelNameHeight(tut1text) + 2;
-			V_DrawLevelTitle(BASEVIDWIDTH/2 + xoffset5 - (V_LevelNameWidth(tut1text)/2), ttheight, 0, tut1text);
-			ttheight += V_LevelNameHeight(tut2text) + 2;
-			V_DrawLevelTitle(BASEVIDWIDTH/2 + xoffset6 - (V_LevelNameWidth(tut2text)/2), ttheight, 0, tut2text);
+			if (LUA_HudEnabled(hud_intermissiontitletext))
+			{
+				const char *ringtext = "\x82" "50 rings, no shield";
+				const char *tut1text = "\x82" "press " "\x80" "spin";
+				const char *tut2text = "\x82" "mid-" "\x80" "jump";
+				ttheight = 8;
+				V_DrawLevelTitle(data.spec.passedx1 + xoffset1, ttheight, 0, data.spec.passed1);
+				ttheight += V_LevelNameHeight(data.spec.passed3) + 2;
+				V_DrawLevelTitle(data.spec.passedx3 + xoffset2, ttheight, 0, data.spec.passed3);
+				ttheight += V_LevelNameHeight(data.spec.passed4) + 2;
+				V_DrawLevelTitle(data.spec.passedx4 + xoffset3, ttheight, 0, data.spec.passed4);
+
+				ttheight = 108;
+				V_DrawLevelTitle(BASEVIDWIDTH/2 + xoffset4 - (V_LevelNameWidth(ringtext)/2), ttheight, 0, ringtext);
+				ttheight += V_LevelNameHeight(tut1text) + 2;
+				V_DrawLevelTitle(BASEVIDWIDTH/2 + xoffset5 - (V_LevelNameWidth(tut1text)/2), ttheight, 0, tut1text);
+				ttheight += V_LevelNameHeight(tut2text) + 2;
+				V_DrawLevelTitle(BASEVIDWIDTH/2 + xoffset6 - (V_LevelNameWidth(tut2text)/2), ttheight, 0, tut2text);
+			}
 		}
 		else
 		{
 			INT32 yoffset = 0;
-			if (data.spec.passed1[0] != '\0')
-			{
-				ttheight = 24;
-				V_DrawLevelTitle(data.spec.passedx1 + xoffset1, ttheight, 0, data.spec.passed1);
-				ttheight += V_LevelNameHeight(data.spec.passed2) + 2;
-				V_DrawLevelTitle(data.spec.passedx2 + xoffset2, ttheight, 0, data.spec.passed2);
-			}
-			else
+
+			if (LUA_HudEnabled(hud_intermissiontitletext))
 			{
-				ttheight = 24 + (V_LevelNameHeight(data.spec.passed2)/2) + 2;
-				V_DrawLevelTitle(data.spec.passedx2 + xoffset1, ttheight, 0, data.spec.passed2);
+				if (data.spec.passed1[0] != '\0')
+				{
+					ttheight = 24;
+					V_DrawLevelTitle(data.spec.passedx1 + xoffset1, ttheight, 0, data.spec.passed1);
+					ttheight += V_LevelNameHeight(data.spec.passed2) + 2;
+					V_DrawLevelTitle(data.spec.passedx2 + xoffset2, ttheight, 0, data.spec.passed2);
+				}
+				else
+				{
+					ttheight = 24 + (V_LevelNameHeight(data.spec.passed2)/2) + 2;
+					V_DrawLevelTitle(data.spec.passedx2 + xoffset1, ttheight, 0, data.spec.passed2);
+				}
 			}
 
 			V_DrawScaledPatch(152 + xoffset3, 108, 0, data.spec.bonuspatches[0]);
@@ -555,6 +648,7 @@ void Y_IntermissionDrawer(void)
 
 		// draw the emeralds
 		//if (intertic & 1)
+		if (LUA_HudEnabled(hud_intermissionemeralds))
 		{
 			boolean drawthistic = !(ALL7EMERALDS(emeralds) && (intertic & 1));
 			INT32 emeraldx = 152 - 3*28;
@@ -927,7 +1021,8 @@ void Y_Ticker(void)
 	if (paused || P_AutoPause())
 		return;
 
-	LUA_HOOK(IntermissionThinker);
+	LUA_HookBool(intertype == int_spec && stagefailed,
+			HOOK(IntermissionThinker));
 
 	intertic++;
 
@@ -1181,10 +1276,9 @@ void Y_DetermineIntermissionType(void)
 //
 // Called by G_DoCompleted. Sets up data for intermission drawer/ticker.
 //
+//
 void Y_StartIntermission(void)
 {
-	INT32 i;
-
 	intertic = -1;
 
 #ifdef PARANOIA
@@ -1228,23 +1322,12 @@ void Y_StartIntermission(void)
 			// setup time data
 			data.coop.tics = players[consoleplayer].realtime;
 
-			for (i = 0; i < 4; ++i)
-			{
-				if (strlen(data.coop.bonuses[i].patch))
-					data.coop.bonuspatches[i] = W_CachePatchName(data.coop.bonuses[i].patch, PU_PATCH);
-			}
-			data.coop.ptotal = W_CachePatchName("YB_TOTAL", PU_PATCH);
-
 			// get act number
 			data.coop.actnum = mapheaderinfo[gamemap-1]->actnum;
 
-			// get background patches
-			bgpatch = W_CachePatchName("INTERSCR", PU_PATCH);
-
 			// grab an interscreen if appropriate
 			if (mapheaderinfo[gamemap-1]->interscreen[0] != '#')
 			{
-				interpic = W_CachePatchName(mapheaderinfo[gamemap-1]->interscreen, PU_PATCH);
 				useinterpic = true;
 				usebuffer = false;
 			}
@@ -1259,24 +1342,40 @@ void Y_StartIntermission(void)
 			usetile = false;
 
 			// set up the "got through act" message according to skin name
-			// too long so just show "YOU GOT THROUGH THE ACT"
-			if (strlen(skins[players[consoleplayer].skin].realname) > 13)
-			{
-				strcpy(data.coop.passed1, "you got");
-				strcpy(data.coop.passed2, (mapheaderinfo[gamemap-1]->actnum) ? "through act" : "through the act");
-			}
-			// long enough that "X GOT" won't fit so use "X PASSED THE ACT"
-			else if (strlen(skins[players[consoleplayer].skin].realname) > 8)
+			if (stagefailed)
 			{
-				strcpy(data.coop.passed1, skins[players[consoleplayer].skin].realname);
-				strcpy(data.coop.passed2, (mapheaderinfo[gamemap-1]->actnum) ? "passed act" : "passed the act");
+				strcpy(data.coop.passed1, mapheaderinfo[gamemap-1]->lvlttl);
+
+				if (mapheaderinfo[gamemap-1]->levelflags & LF_NOZONE)
+				{
+					data.spec.passed2[0] = '\0';
+				}
+				else
+				{
+					strcpy(data.coop.passed2, "Zone");
+				}
 			}
-			// length is okay for normal use
 			else
 			{
-				snprintf(data.coop.passed1, sizeof data.coop.passed1, "%s got",
-					skins[players[consoleplayer].skin].realname);
-				strcpy(data.coop.passed2, (mapheaderinfo[gamemap-1]->actnum) ? "through act" : "through the act");
+				// too long so just show "YOU GOT THROUGH THE ACT"
+				if (strlen(skins[players[consoleplayer].skin].realname) > 13)
+				{
+					strcpy(data.coop.passed1, "you got");
+					strcpy(data.coop.passed2, (mapheaderinfo[gamemap-1]->actnum) ? "through act" : "through the act");
+				}
+				// long enough that "X GOT" won't fit so use "X PASSED THE ACT"
+				else if (strlen(skins[players[consoleplayer].skin].realname) > 8)
+				{
+					strcpy(data.coop.passed1, skins[players[consoleplayer].skin].realname);
+					strcpy(data.coop.passed2, (mapheaderinfo[gamemap-1]->actnum) ? "passed act" : "passed the act");
+				}
+				// length is okay for normal use
+				else
+				{
+					snprintf(data.coop.passed1, sizeof data.coop.passed1, "%s got",
+						skins[players[consoleplayer].skin].realname);
+					strcpy(data.coop.passed2, (mapheaderinfo[gamemap-1]->actnum) ? "through act" : "through the act");
+				}
 			}
 
 			// set X positions
@@ -1293,6 +1392,13 @@ void Y_StartIntermission(void)
 			// The above value is not precalculated because it needs only be computed once
 			// at the start of intermission, and precalculating it would preclude mods
 			// changing the font to one of a slightly different width.
+
+			if ((stagefailed) && !(mapheaderinfo[gamemap-1]->levelflags & LF_NOZONE))
+			{
+				// Bit of a hack, offset so that the "Zone" text is right aligned like title cards.
+				data.coop.passedx2 = (data.coop.passedx1 + V_LevelNameWidth(data.coop.passed1)) - V_LevelNameWidth(data.coop.passed2);
+			}
+
 			break;
 		}
 
@@ -1301,21 +1407,9 @@ void Y_StartIntermission(void)
 			// give out ring bonuses
 			Y_AwardSpecialStageBonus();
 
-			for (i = 0; i < 2; ++i)
-				data.spec.bonuspatches[i] = W_CachePatchName(data.spec.bonuses[i].patch, PU_PATCH);
-
-			data.spec.pscore = W_CachePatchName("YB_SCORE", PU_PATCH);
-			data.spec.pcontinues = W_CachePatchName("YB_CONTI", PU_PATCH);
-
-			// get background tile
-			bgtile = W_CachePatchName("SPECTILE", PU_PATCH);
-
 			// grab an interscreen if appropriate
 			if (mapheaderinfo[gamemap-1]->interscreen[0] != '#')
-			{
-				interpic = W_CachePatchName(mapheaderinfo[gamemap-1]->interscreen, PU_PATCH);
 				useinterpic = true;
-			}
 			else
 				useinterpic = false;
 
@@ -1408,11 +1502,6 @@ void Y_StartIntermission(void)
 
 			data.match.levelstring[sizeof data.match.levelstring - 1] = '\0';
 
-			// get RESULT header
-			data.match.result =
-				W_CachePatchName("RESULT", PU_PATCH);
-
-			bgtile = W_CachePatchName("SRB2BACK", PU_PATCH);
 			usetile = true;
 			useinterpic = false;
 			break;
@@ -1437,10 +1526,6 @@ void Y_StartIntermission(void)
 
 			data.match.levelstring[sizeof data.match.levelstring - 1] = '\0';
 
-			// get RESULT header
-			data.match.result = W_CachePatchName("RESULT", PU_PATCH);
-
-			bgtile = W_CachePatchName("SRB2BACK", PU_PATCH);
 			usetile = true;
 			useinterpic = false;
 			break;
@@ -1466,18 +1551,6 @@ void Y_StartIntermission(void)
 
 			data.match.levelstring[sizeof data.match.levelstring - 1] = '\0';
 
-			if (intertype == int_ctf)
-			{
-				data.match.redflag = rflagico;
-				data.match.blueflag = bflagico;
-			}
-			else // team match
-			{
-				data.match.redflag = rmatcico;
-				data.match.blueflag = bmatcico;
-			}
-
-			bgtile = W_CachePatchName("SRB2BACK", PU_PATCH);
 			usetile = true;
 			useinterpic = false;
 			break;
@@ -1502,8 +1575,6 @@ void Y_StartIntermission(void)
 
 			data.competition.levelstring[sizeof data.competition.levelstring - 1] = '\0';
 
-			// get background tile
-			bgtile = W_CachePatchName("SRB2BACK", PU_PATCH);
 			usetile = true;
 			useinterpic = false;
 			break;
@@ -1748,21 +1819,30 @@ static void Y_SetTimeBonus(player_t *player, y_bonus_t *bstruct)
 	strncpy(bstruct->patch, "YB_TIME", sizeof(bstruct->patch));
 	bstruct->display = true;
 
-	// calculate time bonus
-	secs = player->realtime / TICRATE;
-	if      (secs <  30) /*   :30 */ bonus = 50000;
-	else if (secs <  60) /*  1:00 */ bonus = 10000;
-	else if (secs <  90) /*  1:30 */ bonus = 5000;
-	else if (secs < 120) /*  2:00 */ bonus = 4000;
-	else if (secs < 180) /*  3:00 */ bonus = 3000;
-	else if (secs < 240) /*  4:00 */ bonus = 2000;
-	else if (secs < 300) /*  5:00 */ bonus = 1000;
-	else if (secs < 360) /*  6:00 */ bonus = 500;
-	else if (secs < 420) /*  7:00 */ bonus = 400;
-	else if (secs < 480) /*  8:00 */ bonus = 300;
-	else if (secs < 540) /*  9:00 */ bonus = 200;
-	else if (secs < 600) /* 10:00 */ bonus = 100;
-	else  /* TIME TAKEN: TOO LONG */ bonus = 0;
+	if (stagefailed == true)
+	{
+		// Time Bonus would be very easy to cheese by failing immediately.
+		bonus = 0;
+	}
+	else
+	{
+		// calculate time bonus
+		secs = player->realtime / TICRATE;
+		if      (secs <  30) /*   :30 */ bonus = 50000;
+		else if (secs <  60) /*  1:00 */ bonus = 10000;
+		else if (secs <  90) /*  1:30 */ bonus = 5000;
+		else if (secs < 120) /*  2:00 */ bonus = 4000;
+		else if (secs < 180) /*  3:00 */ bonus = 3000;
+		else if (secs < 240) /*  4:00 */ bonus = 2000;
+		else if (secs < 300) /*  5:00 */ bonus = 1000;
+		else if (secs < 360) /*  6:00 */ bonus = 500;
+		else if (secs < 420) /*  7:00 */ bonus = 400;
+		else if (secs < 480) /*  8:00 */ bonus = 300;
+		else if (secs < 540) /*  9:00 */ bonus = 200;
+		else if (secs < 600) /* 10:00 */ bonus = 100;
+		else  /* TIME TAKEN: TOO LONG */ bonus = 0;
+	}
+
 	bstruct->points = bonus;
 }
 
@@ -1815,12 +1895,21 @@ static void Y_SetGuardBonus(player_t *player, y_bonus_t *bstruct)
 	strncpy(bstruct->patch, "YB_GUARD", sizeof(bstruct->patch));
 	bstruct->display = true;
 
-	if      (player->timeshit == 0) bonus = 10000;
-	else if (player->timeshit == 1) bonus = 5000;
-	else if (player->timeshit == 2) bonus = 1000;
-	else if (player->timeshit == 3) bonus = 500;
-	else if (player->timeshit == 4) bonus = 100;
-	else                            bonus = 0;
+	if (stagefailed == true)
+	{
+		// "No-hit" runs would be very easy to cheese by failing immediately.
+		bonus = 0;
+	}
+	else
+	{
+		if      (player->timeshit == 0) bonus = 10000;
+		else if (player->timeshit == 1) bonus = 5000;
+		else if (player->timeshit == 2) bonus = 1000;
+		else if (player->timeshit == 3) bonus = 500;
+		else if (player->timeshit == 4) bonus = 100;
+		else                            bonus = 0;
+	}
+
 	bstruct->points = bonus;
 }
 
@@ -2033,7 +2122,8 @@ static void Y_AwardSpecialStageBonus(void)
 //
 void Y_EndIntermission(void)
 {
-	Y_UnloadData();
+	if (!dedicated)
+		Y_UnloadData();
 
 	endtic = -1;
 	intertype = int_none;
diff --git a/src/y_inter.h b/src/y_inter.h
index 859144b1d4ad71f7a98a797327537a213e0970b2..871142858ba1df05f0163b19a9cf9efeeafe560a 100644
--- a/src/y_inter.h
+++ b/src/y_inter.h
@@ -1,6 +1,6 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
-// Copyright (C) 2004-2020 by Sonic Team Junior.
+// Copyright (C) 2004-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -14,6 +14,7 @@ extern boolean usebuffer;
 void Y_IntermissionDrawer(void);
 void Y_Ticker(void);
 
+void Y_LoadIntermissionData(void);
 void Y_StartIntermission(void);
 void Y_EndIntermission(void);
 
diff --git a/src/z_zone.c b/src/z_zone.c
index d7da17e51d1608cf068a0c929bbdbd982d3a935c..34ff3d37ef3a025beaa925228d5c6a18c68f2228 100644
--- a/src/z_zone.c
+++ b/src/z_zone.c
@@ -1,7 +1,7 @@
 // SONIC ROBO BLAST 2
 //-----------------------------------------------------------------------------
 // Copyright (C) 2006      by Graue.
-// Copyright (C) 2006-2020 by Sonic Team Junior.
+// Copyright (C) 2006-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
diff --git a/src/z_zone.h b/src/z_zone.h
index e80a45e7fb4f2ed6223868fc78d18649e75ab4ad..be55bf9940ead1a1385f92ca50d296b0bd4fbdf1 100644
--- a/src/z_zone.h
+++ b/src/z_zone.h
@@ -2,7 +2,7 @@
 //-----------------------------------------------------------------------------
 // Copyright (C) 1993-1996 by id Software, Inc.
 // Copyright (C) 1998-2000 by DooM Legacy Team.
-// Copyright (C) 1999-2020 by Sonic Team Junior.
+// Copyright (C) 1999-2021 by Sonic Team Junior.
 //
 // This program is free software distributed under the
 // terms of the GNU General Public License, version 2.
@@ -68,8 +68,7 @@ enum
 	PU_HWRCACHE_UNLOCKED     = 102, // 'unlocked' PU_HWRCACHE memory:
 									// 'second-level' cache for graphics
                                     // stored in hardware format and downloaded as needed
-	PU_HWRPATCHINFO_UNLOCKED    = 103, // 'unlocked' PU_HWRPATCHINFO memory
-	PU_HWRMODELTEXTURE_UNLOCKED = 104, // 'unlocked' PU_HWRMODELTEXTURE memory
+	PU_HWRMODELTEXTURE_UNLOCKED = 103, // 'unlocked' PU_HWRMODELTEXTURE memory
 };
 
 //