- added a compatibility option to allow multiple exits to be triggered.

This is required by Daedalus's travel tubes which contain a faulty script with some leftover debug code.

src/compatibility.cpp

@@ -146,6 +146,7 @@ static FCompatOption Options[] =
 	{ "floormove",				COMPATF2_FLOORMOVE, SLOT_COMPAT2 },
 	{ "soundcutoff",			COMPATF2_SOUNDCUTOFF, SLOT_COMPAT2 },
 	{ "pointonline",			COMPATF2_POINTONLINE, SLOT_COMPAT2 },
+	{ "multiexit",				COMPATF2_MULTIEXIT, SLOT_COMPAT2 },
 
 	{ NULL, 0, 0 }
 };

src/d_main.cpp

@@ -572,7 +572,8 @@ CUSTOM_CVAR(Int, compatmode, 0, CVAR_ARCHIVE|CVAR_NOINITCALL)
 		break;
 
 	case 4: // Old ZDoom compat mode
-		v = COMPATF_SOUNDTARGET|COMPATF_LIGHT;
+		v = COMPATF_SOUNDTARGET | COMPATF_LIGHT;
+		w = COMPATF2_MULTIEXIT;
 		break;
 
 	case 5: // MBF compat mode
@@ -627,6 +628,7 @@ CVAR (Flag, compat_badangles,			compatflags2, COMPATF2_BADANGLES);
 CVAR (Flag, compat_floormove,			compatflags2, COMPATF2_FLOORMOVE);
 CVAR (Flag, compat_soundcutoff,			compatflags2, COMPATF2_SOUNDCUTOFF);
 CVAR (Flag, compat_pointonline,			compatflags2, COMPATF2_POINTONLINE);
+CVAR (Flag, compat_multiexit,			compatflags2, COMPATF2_MULTIEXIT);
 
 //==========================================================================
 //

src/doomdef.h

@@ -341,6 +341,7 @@ enum
 	COMPATF2_FLOORMOVE		= 1 << 1,	// Use the same floor motion behavior as Doom.
 	COMPATF2_SOUNDCUTOFF	= 1 << 2,	// Cut off sounds when an actor vanishes instead of making it owner-less
 	COMPATF2_POINTONLINE	= 1 << 3,	// Use original but buggy P_PointOnLineSide() and P_PointOnDivlineSide()
+	COMPATF2_MULTIEXIT		= 1 << 4,	// Level exit can be triggered multiple times (required by Daedalus's travel tubes, thanks to a faulty script)
 };
 
 // Emulate old bugs for select maps. These are not exposed by a cvar

src/g_level.cpp

@@ -535,7 +535,7 @@ void G_ChangeLevel(const char *levelname, int position, int flags, int nextSkill
 		Printf (TEXTCOLOR_RED "Unloading scripts cannot exit the level again.\n");
 		return;
 	}
-	if (gameaction == ga_completed)	// do not exit multiple times.
+	if (gameaction == ga_completed && !(i_compatflags2 & COMPATF2_MULTIEXIT))	// do not exit multiple times.
 	{
 		return;
 	}

src/g_mapinfo.cpp

@@ -1328,6 +1328,7 @@ MapFlagHandlers[] =
 	{ "compat_floormove",				MITYPE_COMPATFLAG, 0, COMPATF2_FLOORMOVE },
 	{ "compat_soundcutoff",				MITYPE_COMPATFLAG, 0, COMPATF2_SOUNDCUTOFF },
 	{ "compat_pointonline",				MITYPE_COMPATFLAG, 0, COMPATF2_POINTONLINE },
+	{ "compat_multiexit",				MITYPE_COMPATFLAG, 0, COMPATF2_MULTIEXIT },
 	{ "cd_start_track",					MITYPE_EATNEXT,	0, 0 },
 	{ "cd_end1_track",					MITYPE_EATNEXT,	0, 0 },
 	{ "cd_end2_track",					MITYPE_EATNEXT,	0, 0 },

wadsrc/static/compatibility.txt

@@ -411,6 +411,11 @@ D0139194F7817BF06F3988DFC47DB38D // Whispers of Satan map29
 	nopassover
 }
 
+5397C3B7D9B33AAF526D15A81A762828 // daedalus.wad Travel tubes (they are all identical)
+{
+	multiexit
+}
+
 D7F6E9F08C39A17026349A04F8C0B0BE // Return to Hadron, e1m9
 19D03FFC875589E21EDBB7AB74EF4AEF // Return to Hadron, e1m9, 2016.01.03 update
 {

wadsrc/static/language.enu

@@ -2035,6 +2035,7 @@ CMPTMNU_SHORTTEX			= "Find shortest textures like Doom";
 CMPTMNU_STAIRS				= "Use buggier stair building";
 CMPTMNU_FLOORMOVE			= "Use Doom's floor motion behavior";
 CMPTMNU_POINTONLINE			= "Use Doom's point-on-line algorithm";
+CMPTMNU_MULTIEXIT			= "Level exit can be triggered more than once."
 CMPTMNU_PHYSICSBEHAVIOR		= "Physics Behavior";
 CMPTMNU_NOPASSOVER			= "Actors are infinitely tall";
 CMPTMNU_BOOMSCROLL			= "Boom scrollers are additive";

wadsrc/static/menudef.txt

@@ -1304,6 +1304,7 @@ OptionMenu "CompatibilityOptions"
 	Option "$CMPTMNU_STAIRS",						"compat_stairs", "YesNo"
 	Option "$CMPTMNU_FLOORMOVE",					"compat_floormove", "YesNo"
 	Option "$CMPTMNU_POINTONLINE",					"compat_pointonline", "YesNo"
+	Option "$CMPTMNU_MULTIEXIT",					"compat_multiexit", "YesNo"
 	
 	StaticText " "
 	StaticText "$CMPTMNU_PHYSICSBEHAVIOR",1