FINAL CHANGE, I PROMISE, I THINK

* MainCfg property smpstage_start - controls the special stage multiplayer games go to.

src/dehacked.c

@@ -2670,7 +2670,21 @@ static void readmaincfg(MYFILE *f)
 					value = get_number(word2);
 
 				sstage_start = (INT16)value;
-				sstage_end = (INT16)(sstage_start+6); // 7 special stages total
+				sstage_end = (INT16)(sstage_start+7); // 7 special stages total plus one weirdo
+			}
+			else if (fastcmp(word, "SMPSTAGE_START"))
+			{
+				// Support using the actual map name,
+				// i.e., Level AB, Level FZ, etc.
+
+				// Convert to map number
+				if (word2[0] >= 'A' && word2[0] <= 'Z')
+					value = M_MapNumber(word2[0], word2[1]);
+				else
+					value = get_number(word2);
+
+				smpstage_start = (INT16)value;
+				smpstage_end = (INT16)(smpstage_start+6); // 7 special stages total
 			}
 			else if (fastcmp(word, "REDTEAM"))
 			{

src/doomstat.h

@@ -126,8 +126,7 @@ extern INT32 secondarydisplayplayer; // for splitscreen
 
 // Maps of special importance
 extern INT16 spstage_start;
-extern INT16 sstage_start;
-extern INT16 sstage_end;
+extern INT16 sstage_start, sstage_end, smpstage_start, smpstage_end;
 
 extern INT16 titlemap;
 extern boolean hidetitlepics;

src/g_game.c

@@ -121,8 +121,7 @@ INT16 lastmap; // last level you were at (returning from special stages)
 tic_t timeinmap; // Ticker for time spent in level (used for levelcard display)
 
 INT16 spstage_start;
-INT16 sstage_start;
-INT16 sstage_end;
+INT16 sstage_start, sstage_end, smpstage_start, smpstage_end;
 
 INT16 titlemap = 0;
 boolean hidetitlepics = false;
@@ -2795,7 +2794,11 @@ INT32 G_GetGametypeByName(const char *gametypestr)
 //
 boolean G_IsSpecialStage(INT32 mapnum)
 {
-	if (gametype == GT_COOP && modeattacking != ATTACKING_RECORD && mapnum >= sstage_start && mapnum <= sstage_end)
+	if (gametype != GT_COOP || modeattacking == ATTACKING_RECORD)
+		return false;
+	if (mapnum >= sstage_start && mapnum <= sstage_end)
+		return true;
+	if (mapnum >= smpstage_start && mapnum <= smpstage_end)
 		return true;
 
 	return false;
@@ -3018,23 +3021,17 @@ static void G_DoCompleted(void)
 
 	if ((gottoken = (gametype == GT_COOP && token)))
 	{
+		INT16 i;
 		token--;
 
-		if (!(emeralds & EMERALD1))
-			nextmap = (INT16)(sstage_start - 1); // Special Stage 1
-		else if (!(emeralds & EMERALD2))
-			nextmap = (INT16)(sstage_start); // Special Stage 2
-		else if (!(emeralds & EMERALD3))
-			nextmap = (INT16)(sstage_start + 1); // Special Stage 3
-		else if (!(emeralds & EMERALD4))
-			nextmap = (INT16)(sstage_start + 2); // Special Stage 4
-		else if (!(emeralds & EMERALD5))
-			nextmap = (INT16)(sstage_start + 3); // Special Stage 5
-		else if (!(emeralds & EMERALD6))
-			nextmap = (INT16)(sstage_start + 4); // Special Stage 6
-		else if (!(emeralds & EMERALD7))
-			nextmap = (INT16)(sstage_start + 5); // Special Stage 7
-		else
+		for (i = 0; i < 7; i++)
+			if (!(emeralds & i))
+			{
+				nextmap = ((netgame || multiplayer) ? smpstage_start : sstage_start) + i - 1; // to special stage!
+				break;
+			}
+
+		if (i == 7)
 			gottoken = false;
 	}
 
@@ -3206,8 +3203,9 @@ void G_LoadGameSettings(void)
 {
 	// defaults
 	spstage_start = 1;
-	sstage_start = 50;
-	sstage_end = 57; // 8 special stages in vanilla SRB2
+	sstage_start = smpstage_start = 50;
+	sstage_end = smpstage_end = 57; // 7 special stages in vanilla SRB2
+	sstage_end++; // plus one weirdo
 
 	// initialize free sfx slots for skin sounds
 	S_InitRuntimeSounds();

src/p_user.c

@@ -283,9 +283,11 @@ boolean P_PlayerMoving(INT32 pnum)
 //
 UINT8 P_GetNextEmerald(void)
 {
-	if (gamemap < sstage_start || gamemap > sstage_end)
-		return 0;
-	return (UINT8)(gamemap - sstage_start);
+	if (gamemap >= sstage_start && gamemap <= sstage_end)
+		return (UINT8)(gamemap - sstage_start);
+	if (gamemap >= smpstage_start || gamemap <= smpstage_end)
+		return (UINT8)(gamemap - smpstage_start);
+	return 0;
 }
 
 //

src/y_inter.c

@@ -427,7 +427,7 @@ void Y_IntermissionDrawer(void)
 		{
 			boolean drawthistic = !(ALL7EMERALDS(emeralds) && (intertic & 1));
 			INT32 emeraldx = 152 - 3*28;
-			INT32 em = (gamemap - sstage_start);
+			INT32 em = P_GetNextEmerald();
 
 			if (em == 7)
 			{
@@ -1358,7 +1358,7 @@ void Y_StartIntermission(void)
 				else
 					strcpy(data.spec.passed1, "YOU GOT");
 				strcpy(data.spec.passed2, "A CHAOS EMERALD");
-				if (gamemap > (sstage_start + 5))
+				if (P_GetNextEmerald() > 6)
 				{
 					data.spec.passed2[15] = '?';
 					data.spec.passed2[16] = '\0';