diff --git a/extras/conf/udb/Includes/SRB222_misc.cfg b/extras/conf/udb/Includes/SRB222_misc.cfg
index 4139fa967a3fa59ec5cb9dcebaa3e8a18a55f67a..36518be9f52b3eb9b0673885f86a605ed700586f 100644
--- a/extras/conf/udb/Includes/SRB222_misc.cfg
+++ b/extras/conf/udb/Includes/SRB222_misc.cfg
@@ -79,6 +79,7 @@ sectorflags
triggerspecial_touch = "Trigger on Edge Touch";
triggerspecial_headbump = "Trigger on Headbump";
invertprecip = "Invert Precipitation";
+ gravityflip = "Flip Objects in Reverse Gravity";
heatwave = "Heat Wave";
}
diff --git a/src/deh_lua.c b/src/deh_lua.c
index 28030052a86eacdda0a1c89a78b8cb9eade97a48..e360febaf2269c36f8cd736e3f86e5a347faf5db 100644
--- a/src/deh_lua.c
+++ b/src/deh_lua.c
@@ -340,7 +340,7 @@ static inline int lib_getenum(lua_State *L)
}
else if (fastncmp("MSF_", word, 3)) {
p = word + 4;
- for (i = 0; i < 5; i++)
+ for (i = 0; i < 6; i++)
if (MSF_LIST[i] && fastcmp(p, MSF_LIST[i])) {
lua_pushinteger(L, ((lua_Integer)1 << i));
return 1;
diff --git a/src/deh_tables.c b/src/deh_tables.c
index b6a9e02254ff422c5b457dd5f372e2cb34cb3279..095aae0f266104de92bc2bbe5bd2ff1381ba30f0 100644
--- a/src/deh_tables.c
+++ b/src/deh_tables.c
@@ -4472,11 +4472,12 @@ const char *const ML_LIST[16] = {
};
// Sector flags
-const char *const MSF_LIST[5] = {
+const char *const MSF_LIST[6] = {
"FLIPSPECIAL_FLOOR",
"FLIPSPECIAL_CEILING",
"TRIGGERSPECIAL_TOUCH",
"TRIGGERSPECIAL_HEADBUMP",
+ "GRAVITYFLIP",
"HEATWAVE",
};
diff --git a/src/deh_tables.h b/src/deh_tables.h
index 982c6ff4a3dccb4985b0bef5ba80714aab73c34b..2e514a5b15c624f224d01ab8cf3a3c172cb20ecf 100644
--- a/src/deh_tables.h
+++ b/src/deh_tables.h
@@ -65,7 +65,7 @@ extern const char *const MAPTHINGFLAG_LIST[4];
extern const char *const PLAYERFLAG_LIST[];
extern const char *const GAMETYPERULE_LIST[];
extern const char *const ML_LIST[16]; // Linedef flags
-extern const char* const MSF_LIST[5]; // Sector flags
+extern const char* const MSF_LIST[6]; // Sector flags
extern const char *COLOR_ENUMS[];
extern const char *const POWERS_LIST[];
extern const char *const HUDITEMS_LIST[];
diff --git a/src/lua_maplib.c b/src/lua_maplib.c
index 0a147acbb3560816adfbf7e97192dc8e871c270a..74f45535f8b0730eee8208329894ce15a6c264ca 100644
--- a/src/lua_maplib.c
+++ b/src/lua_maplib.c
@@ -753,6 +753,7 @@ static int sector_set(lua_State *L)
return LUA_ErrSetDirectly(L, "sector_t", "taglist");
case sector_flags:
sector->flags = luaL_checkinteger(L, 3);
+ CheckForReverseGravity |= (sector->flags & MSF_GRAVITYFLIP);
break;
case sector_gravity:
sector->gravity = luaL_checkfixed(L, 3);
diff --git a/src/p_mobj.c b/src/p_mobj.c
index aea7964beffb3c4751d475bc84d7caf9842ea874..bdfee2616a1d1024a50297bfe010a661ec3d7a57 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -1463,7 +1463,7 @@ fixed_t P_GetMobjGravity(mobj_t *mo)
gravityadd = -FixedMul(gravity, gravfactor);
- if (rover->master->frontsector->verticalflip && gravityadd > 0)
+ if ((rover->master->frontsector->flags & MSF_GRAVITYFLIP) && gravityadd > 0)
mo->eflags |= MFE_VERTICALFLIP;
no3dfloorgrav = false;
@@ -1475,7 +1475,7 @@ fixed_t P_GetMobjGravity(mobj_t *mo)
{
gravityadd = -FixedMul(gravity, P_GetSectorGravityFactor(mo->subsector->sector));
- if (mo->subsector->sector->verticalflip && gravityadd > 0)
+ if ((mo->subsector->sector->flags & MSF_GRAVITYFLIP) && gravityadd > 0)
mo->eflags |= MFE_VERTICALFLIP;
}
diff --git a/src/p_saveg.c b/src/p_saveg.c
index 66df83603b3646ca6976d8f3088b1ef6ba936ff5..d7a9750b774623719493c2a5dcd8ba4ee8505bbc 100644
--- a/src/p_saveg.c
+++ b/src/p_saveg.c
@@ -1213,7 +1213,10 @@ static void UnArchiveSectors(void)
sectors[i].ceilinglightabsolute = READUINT8(save_p);
}
if (diff3 & SD_FLAG)
+ {
sectors[i].flags = READUINT32(save_p);
+ CheckForReverseGravity |= (sectors[i].flags & MSF_GRAVITYFLIP);
+ }
if (diff3 & SD_GRAVITY)
sectors[i].gravity = READFIXED(save_p);
diff --git a/src/p_setup.c b/src/p_setup.c
index 2bcde2b92f921c5e9fc3320474c5df69e67823d5..70c6276d0afb1f654f71eee77c1fff80ac39fe24 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -1000,7 +1000,6 @@ static void P_InitializeSector(sector_t *ss)
ss->extra_colormap = NULL;
ss->gravityptr = NULL;
- ss->verticalflip = false;
ss->cullheight = NULL;
@@ -1674,6 +1673,8 @@ static void ParseTextmapSectorParameter(UINT32 i, char *param, char *val)
sectors[i].flags |= MSF_TRIGGERSPECIAL_HEADBUMP;
else if (fastcmp(param, "invertprecip") && fastcmp("true", val))
sectors[i].flags |= MSF_INVERTPRECIP;
+ else if (fastcmp(param, "gravityflip") && fastcmp("true", val))
+ sectors[i].flags |= MSF_GRAVITYFLIP;
else if (fastcmp(param, "heatwave") && fastcmp("true", val))
sectors[i].flags |= MSF_HEATWAVE;
else if (fastcmp(param, "friction"))
diff --git a/src/p_spec.c b/src/p_spec.c
index 846ce937690003dea80f3f0dfcd1bc8c57dc48dd..6049214455a7d6612ab41f41d17c2afe8abe5c02 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -5994,6 +5994,8 @@ void P_SpawnSpecials(boolean fromnetsave)
sector = sectors;
for (i = 0; i < numsectors; i++, sector++)
{
+ CheckForReverseGravity |= (sector->flags & MSF_GRAVITYFLIP);
+
if (!sector->special)
continue;
@@ -6116,11 +6118,11 @@ void P_SpawnSpecials(boolean fromnetsave)
sectors[s].gravityptr = §ors[sec].floorheight; // This allows it to change in realtime!
if (lines[i].flags & ML_NOCLIMB)
- sectors[s].verticalflip = true;
+ sectors[s].flags |= MSF_GRAVITYFLIP;
else
- sectors[s].verticalflip = false;
+ sectors[s].flags &= ~MSF_GRAVITYFLIP;
- CheckForReverseGravity = sectors[s].verticalflip;
+ CheckForReverseGravity |= (sectors[s].flags & MSF_GRAVITYFLIP);
}
break;
diff --git a/src/r_defs.h b/src/r_defs.h
index 0fd13b70773aa5d653a6a2f3969813f9aab456bd..c565473dd0fee089809c34e1715ea95358c81b1a 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -284,7 +284,8 @@ typedef enum
MSF_TRIGGERSPECIAL_HEADBUMP = 1<<3,
// invertprecip - inverts presence of precipitation
MSF_INVERTPRECIP = 1<<4,
- MSF_HEATWAVE = 1<<5, // heat wave effect
+ MSF_GRAVITYFLIP = 1<<5,
+ MSF_HEATWAVE = 1<<6,
} sectorflags_t;
@@ -368,7 +369,6 @@ typedef struct sector_s
fixed_t gravity; // per-sector gravity factor
fixed_t *gravityptr; // For binary format: Read gravity from floor height of master sector
- boolean verticalflip; // If gravity < 0, then allow flipped physics
sectorflags_t flags;
INT32 friction;