- Added the mapinfo flag ForgetState. This prevents a maps state from being remembered in a hub,

so when you return to it without leaving the hub, it will be as if you had never set foot in
  it. RememberState is provided to turn this flag off.

SVN r3846 (trunk)

src/g_level.cpp

@@ -737,7 +737,14 @@ void G_DoCompleted (void)
 
 	if (mode == FINISH_SameHub)
 	{ // Remember the level's state for re-entry.
-		G_SnapshotLevel ();
+		if (!(level.flags2 & LEVEL2_FORGETSTATE))
+		{
+			G_SnapshotLevel ();
+		}
+		else
+		{ // Make sure we don't have a snapshot lying around from before.
+			level.info->ClearSnapshot();
+		}
 	}
 	else
 	{ // Forget the states of all existing levels.

src/g_level.h

@@ -213,6 +213,7 @@ enum ELevelFlags
 	LEVEL2_NOSTATISTICS			= 0x10000000,	// This level should not have statistics collected
 	LEVEL2_ENDGAME				= 0x20000000,	// This is an epilogue level that cannot be quit.
 	LEVEL2_NOAUTOSAVEHINT		= 0x40000000,	// tell the game that an autosave for this level does not need to be kept
+	LEVEL2_FORGETSTATE			= 0x80000000,	// forget this map's state in a hub
 };
 
 

src/g_mapinfo.cpp

@@ -1264,6 +1264,8 @@ MapFlagHandlers[] =
 	{ "endofgame",						MITYPE_SETFLAG2,	LEVEL2_ENDGAME, 0 },
 	{ "nostatistics",					MITYPE_SETFLAG2,	LEVEL2_NOSTATISTICS, 0 },
 	{ "noautosavehint",					MITYPE_SETFLAG2,	LEVEL2_NOAUTOSAVEHINT, 0 },
+	{ "forgetstate",					MITYPE_SETFLAG2,	LEVEL2_FORGETSTATE, 0 },
+	{ "rememberstate",					MITYPE_CLRFLAG2,	LEVEL2_FORGETSTATE, 0 },
 	{ "unfreezesingleplayerconversations",MITYPE_SETFLAG2,	LEVEL2_CONV_SINGLE_UNFREEZE, 0 },
 	{ "nobotnodes",						MITYPE_IGNORE,	0, 0 },		// Skulltag option: nobotnodes
 	{ "compat_shorttex",				MITYPE_COMPATFLAG, COMPATF_SHORTTEX, 0 },