More level_compatibility map fixes

These maps have actors not marked for any game mode (single, cooperative, deathmatch). That works in Zandronum, but GZDoom requires this fix.

wadsrc/static/zscript/level_compatibility.zs

@@ -1478,6 +1478,15 @@ class LevelCompatibility : LevelPostProcessor
 				break;
 			}
 
+			case '25E178C981BAC28BA586B3B0A2A0FD72': // swan fox doom v2.4.wad map13
+			{
+				//Actors with no game mode will now appear
+				SetThingFlags(0, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				for(int i = 2; i < 452; i++)
+					SetThingFlags(i, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				break;
+			}
+
 			case 'FDFB3D209CC0F3706AAF3E51646003D5': // swan fox doom v2.4.wad map23
 			{
 				//Fix the exit portal to allow walking into it instead of shooting it
@@ -1486,6 +1495,24 @@ class LevelCompatibility : LevelPostProcessor
 				ClearLineSpecial(2010);
 				break;
 			}
+
+			case 'BC969ED0191CCD9B69B316864362B0D7': // swan fox doom v2.4.wad map24
+			{
+				//Actors with no game mode will now appear
+				for(int i = 1; i < 88; i++)
+					SetThingFlags(i, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				break;
+			}
+
+			case 'ED740248422026326650F6A4BC1C0A5A': // swan fox doom v2.4.wad map25
+			{
+				//Actors with no game mode will now appear
+				for(int i = 0; i < 8; i++)
+					SetThingFlags(i, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				for(int i = 9; i < 26; i++)
+					SetThingFlags(i, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				break;
+			}
 
 			case '52F532F95E2D5862E56F7214FA5C5C59': // Toon Doom II (toon2b.wad) map10
 			{
@@ -1661,6 +1688,15 @@ class LevelCompatibility : LevelPostProcessor
 				OffsetSectorPlane(65, Sector.ceiling, 8);
 				break;
 			}
+
+			case '75E2685CA8AB29108DBF1AC98C5450AC': // Ancient Beliefs (beliefs.wad) map01
+			{
+				//Actors with no game mode will now appear
+				SetThingFlags(0, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				for(int i = 2; i < 7; i++)
+					SetThingFlags(i, MTF_SINGLE|MTF_COOPERATIVE|MTF_DEATHMATCH);
+				break;
+			}
 		}
 	}
 }