diff --git a/README.md b/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..eb06156b4673c7656512ed16528b0edbbada3970
--- /dev/null
+++ b/README.md
@@ -0,0 +1,22 @@
+# Sonic Robo Blast 2
+
+[](https://ci.appveyor.com/project/STJr/srb2)
+[](https://travis-ci.org/STJr/SRB2)
+
+[Sonic Robo Blast 2](https://srb2.org/) is a 3D Sonic the Hedgehog fangame based on a modified version of [Doom Legacy](http://doomlegacy.sourceforge.net/).
+
+## Dependencies
+- NASM (x86 builds only)
+- SDL2 (Linux/OS X only)
+- SDL2-Mixer (Linux/OS X only)
+- libupnp (Linux/OS X only)
+- libgme (Linux/OS X only)
+
+Warning: 64-bit builds are not netgame compatible with 32-bit builds. Use at your own risk.
+
+## Compiling
+
+See [SRB2 Wiki/Source code compiling](http://wiki.srb2.org/wiki/Source_code_compiling)
+
+## Disclaimer
+Sonic Team Junior is in no way affiliated with SEGA or Sonic Team. We do not claim ownership of any of SEGA's intellectual property used in SRB2.
diff --git a/readme.txt b/readme.txt
deleted file mode 100644
index c1898d491f0291bbfad2bd09b8b2cbc7b673e9ee..0000000000000000000000000000000000000000
--- a/readme.txt
+++ /dev/null
@@ -1,155 +0,0 @@
-Here it is! SRB2 v2.1.14 source code!
-(why do we keep the version number up to date
- when everything else in this file is hilariously old?
- - Inuyasha)
-
-
-Win32 with Visual C (6SP6+Processor Pack OR 7)
-~~~
-
-2 VC++ 6.0 project files are included:
-
-Win32/DirectX/FMOD
-src\win32\wLegacy.dsw
-You'll need FMOD to compile this version (www.fmod.org)
-or
-Win32/SDL/SDL_mixer
-src\sdl\Win32SDL.dsp
-You'll need SDL and SDL_mixer for this version (www.libsdl.org)
-
-Both needs NASM (http://sourceforge.net/projects/nasm)
-For PNG screenshot, libPNG, and Zlib (from http://gnuwin32.sourceforge.net/)
-
-No warranty, support, etc. of any kind is offered,
-just plain old as is.
-Some bits of code are still really scary.
-Go nuts!
-
-
-Win32 with Dev-C++ (http://bloodshed.net/ free!)
-~~~
-2 Dev-C++ project files are included:
-
-Win32/DirectX/FMOD
-src\win32\SRB2.dev
-or
-Win32/SDL/SDL_mixer
-src\sdl\Win32SDL.dev
-You'll need SDL and SDL_mixer for this version (www.libsdl.org)
-libPNG and Zlib (from http://gnuwin32.sourceforge.net/)
-Note there are precompiled libpng.a and libz.a for Mingw
-
-you will need NASM for both SDL/SDL_mixer and DirectX/FMOD
-and you need DirectX 6 (or up) Dev-Paks to compile DirectX version
-
-GNU/Linux
-~~~
-
-Dependencies:
- SDL 1.2.7 or better (from libsdl.org)
- SDL_Mixer 1.2.2(.7 for file-less music playback) (from libsdl.org)
- Nasm (use NOASM=1 if you don't have it or have an non-i386 system, I think)
- libPNG 1.2.7
- Zlib 1.2.3
- The Xiph.org libogg and libvorbis libraries
- The OpenGL headers (from Mesa, usually shipped with your X.org or XFree
- installation, so you needn't worry, most likely)
- GCC 3.x toolchain and binutils
- GNU Make
-
-Build instructions:
-
-make -C src LINUX=1
-
-Build instructions (64 bit):
-
-make -C src LINUX64=1
-
-Build instructions to build for Wii Linux/SRB2Wii on a PowerPC system,
-follow cross-compiling instructions for cross-compiling on a x86 system:
-
-make -C src LINUX=1 WIILINUX=1
-
-Build instructions to build for Pandora (Linux) on a ARM system,
-follow cross-compiling instructions for cross-compiling on a x86 system:
-
-make -C src PANDORA=1
-
-Solaris
-~~~
-
-Dependencies:
- SDL 1.2.5 or better (from libsdl.org)
- SDL_Mixer 1.2.2(.7 for file-less music playback) (from libsdl.org)
- libPNG 1.2.7
- Zlib 1.2.3
- The Xiph.org libogg and libvorbis libraries
- The OpenGL headers (from Mesa, usually shipped with your X.org or XFree
- installation, so you needn't worry, most likely)
- GCC 3.x toolchain and binutils
- GNU Make
-
- You can get all these programs/libraries from the Companion CD (except SDL_mixer and OpenGL)
-
-Build instructions:
-
-gmake -C src SOLARIS=1
-
-FreeBSD
-~~~
-
-Dependencies:
- SDL 1.2.7 or better (from libsdl.org)
- SDL_Mixer 1.2.2(.7 for file-less music playback) (from libsdl.org)
- Nasm (use NOASM=1 if you don't have it or have an non-i386 system, I think)
- libPNG 1.2.7
- Zlib 1.2.3
- The Xiph.org libogg and libvorbis libraries
- The OpenGL headers (from Mesa, usually shipped with your X.org or XFree
- installation, so you needn't worry, most likely)
- GCC 3.x toolchain and binutils
- GNU Make
-
-Build instructions:
-
-gmake -C src FREEBSD=1
-
-DJGPP/DOS
-~~~
-
-Dependencies:
- Allegro 3.12 game programming library, (from
- http://alleg.sourceforge.net/index.html)
- Nasm (use NOASM=1 if you don't have it)
- libsocket (from http://homepages.nildram.co.uk/~phekda/richdawe/lsck/) or
- Watt-32 (from http://www.bgnett.no/~giva/)
- GCC 3.x toolchain and binutils
- GNU Make
-
-Build instructions:
-
-make -C src # to link with Watt-32, add WATTCP=1
- # for remote debugging over the COM port, add RDB=1
-
-Notes:
- use tools\djgpp\all313.diff to update Allegro to a "more usable" version ;)
- Example: E:\djgpp\allegro>patch -p# < D:\SRB2Code\1.1\srb2\tools\djgpp\all313.diff
-
-Windows CE
-~~~
-
-Dependencies:
- SDL 1.27
-
-Build instructions:
-
-use src\SDL\WinCE\SRB2CE.vcw
-
--------------------------------------------------------------------------------
-
-binaries will turn in up in bin/
-
-note: read the src/makefile for more options
-
-- Sonic Team Junior
-http://www.srb2.org
diff --git a/src/p_mobj.c b/src/p_mobj.c
index 343c735c871eea1625534dfa81d5d771f0fd456b..5e5961d41d1d617371bb341352b5abb0e060e497 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -1278,25 +1278,23 @@ fixed_t P_GetMobjGravity(mobj_t *mo)
for (rover = mo->subsector->sector->ffloors; rover; rover = rover->next)
{
- if (!(rover->flags & FF_EXISTS))
+ if (!(rover->flags & FF_EXISTS) || !P_InsideANonSolidFFloor(mo, rover)) // P_InsideANonSolidFFloor checks for FF_EXISTS itself, but let's not always call this function
continue;
- if (P_InsideANonSolidFFloor(mo, rover))
- {
- if ((rover->flags & (FF_SWIMMABLE|FF_GOOWATER)) == (FF_SWIMMABLE|FF_GOOWATER))
- goopgravity = true;
- if (rover->master->frontsector->gravity)
- {
- gravityadd = -FixedMul(gravity,
- (FixedDiv(*rover->master->frontsector->gravity>>FRACBITS, 1000)));
+ if ((rover->flags & (FF_SWIMMABLE|FF_GOOWATER)) == (FF_SWIMMABLE|FF_GOOWATER))
+ goopgravity = true;
- if (rover->master->frontsector->verticalflip && gravityadd > 0)
- mo->eflags |= MFE_VERTICALFLIP;
+ if (!(rover->master->frontsector->gravity))
+ continue;
- no3dfloorgrav = false;
- break;
- }
- }
+ gravityadd = -FixedMul(gravity,
+ (FixedDiv(*rover->master->frontsector->gravity>>FRACBITS, 1000)));
+
+ if (rover->master->frontsector->verticalflip && gravityadd > 0)
+ mo->eflags |= MFE_VERTICALFLIP;
+
+ no3dfloorgrav = false;
+ break;
}
}
@@ -1318,28 +1316,20 @@ fixed_t P_GetMobjGravity(mobj_t *mo)
if (mo->player)
{
- if (mo->player->charability == CA_FLY && (mo->player->powers[pw_tailsfly]
- || (mo->state >= &states[S_PLAY_SPC1] && mo->state <= &states[S_PLAY_SPC4])))
- gravityadd = gravityadd/3; // less gravity while flying
- if (mo->player->pflags & PF_GLIDING)
- gravityadd = gravityadd/3; // less gravity while gliding
- if (mo->player->climbing)
- gravityadd = 0;
- if (mo->player->pflags & PF_NIGHTSMODE)
+ if ((mo->player->pflags & PF_GLIDING)
+ || (mo->player->charability == CA_FLY && (mo->player->powers[pw_tailsfly]
+ || (mo->state >= &states[S_PLAY_SPC1] && mo->state <= &states[S_PLAY_SPC4]))))
+ gravityadd = gravityadd/3; // less gravity while flying/gliding
+ if (mo->player->climbing || (mo->player->pflags & PF_NIGHTSMODE))
gravityadd = 0;
+ if (!(mo->flags2 & MF2_OBJECTFLIP) != !(mo->player->powers[pw_gravityboots])) // negated to turn numeric into bool - would be double negated, but not needed if both would be
{
- UINT8 bits = 0;
- if (mo->flags2 & MF2_OBJECTFLIP)
- bits ^= 1;
- if (mo->player->powers[pw_gravityboots])
- bits ^= 1;
- if (bits & 1)
- {
- gravityadd = -gravityadd;
- mo->eflags ^= MFE_VERTICALFLIP;
- }
+ gravityadd = -gravityadd;
+ mo->eflags ^= MFE_VERTICALFLIP;
}
+ if (wasflip == !(mo->eflags & MFE_VERTICALFLIP)) // note!! == ! is not equivalent to != here - turns numeric into bool this way
+ P_PlayerFlip(mo);
}
else
{
@@ -1347,10 +1337,10 @@ fixed_t P_GetMobjGravity(mobj_t *mo)
if (mo->flags2 & MF2_OBJECTFLIP)
{
mo->eflags |= MFE_VERTICALFLIP;
- if (gravityadd < 0) // Don't sink, only rise up
- gravityadd *= -1;
if (mo->z + mo->height >= mo->ceilingz)
gravityadd = 0;
+ else if (gravityadd < 0) // Don't sink, only rise up
+ gravityadd *= -1;
}
else //Otherwise, sort through the other exceptions.
{
@@ -1396,9 +1386,6 @@ fixed_t P_GetMobjGravity(mobj_t *mo)
if (goopgravity)
gravityadd = -gravityadd/5;
- if (mo->player && !!(mo->eflags & MFE_VERTICALFLIP) != wasflip)
- P_PlayerFlip(mo);
-
gravityadd = FixedMul(gravityadd, mo->scale);
return gravityadd;