* Made levels with TOL_COOP inaccessible from the multiplayer map select unless you'd visited them in singleplayer (mapvisited, saves to gamedata) or visited a Co-op level number equal to/after it (multiplayer, doesn't save to gamedata)

* Tweaked Pandora's box to add:
 - A mid-game link to the Addons menu.
 - A button to give everyone SF_SUPER (except Tails in non-devmode executables).

src/doomstat.h

@@ -44,6 +44,7 @@ extern INT32 cursaveslot;
 //extern INT16 lastmapsaved;
 extern INT16 lastmaploaded;
 extern boolean gamecomplete;
+extern INT16 lastcoop;
 
 #define PRECIP_NONE  0
 #define PRECIP_STORM 1

src/g_game.c

@@ -80,6 +80,7 @@ INT32 cursaveslot = -1; // Auto-save 1p savegame slot
 //INT16 lastmapsaved = 0; // Last map we auto-saved at
 INT16 lastmaploaded = 0; // Last map the game loaded
 boolean gamecomplete = false;
+INT16 lastcoop = 0;
 
 UINT16 mainwads = 0;
 boolean modifiedgame; // Set if homebrew PWAD stuff has been added.

src/m_menu.c

@@ -236,6 +236,7 @@ static void M_CustomLevelSelect(INT32 choice);
 static void M_CustomWarp(INT32 choice);
 FUNCNORETURN static ATTRNORETURN void M_UltimateCheat(INT32 choice);
 static void M_LoadGameLevelSelect(INT32 choice);
+static void M_AllowSuper(INT32 choice);
 static void M_GetAllEmeralds(INT32 choice);
 static void M_DestroyRobots(INT32 choice);
 static void M_LevelSelectWarp(INT32 choice);
@@ -677,17 +678,20 @@ static menuitem_t MISC_HelpMenu[] =
 // Pause Menu Pandora's Box Options
 static menuitem_t SR_PandorasBox[] =
 {
-	{IT_STRING | IT_CVAR, NULL, "Rings",              &cv_dummyrings,      20},
+	{IT_STRING | IT_CALL, NULL, "Mid-game add-ons...", M_Addons,             0},
-	{IT_STRING | IT_CVAR, NULL, "Lives",              &cv_dummylives,      30},
-	{IT_STRING | IT_CVAR, NULL, "Continues",          &cv_dummycontinues,  40},
 
-	{IT_STRING | IT_CVAR, NULL, "Gravity",            &cv_gravity,         60},
+	{IT_STRING | IT_CVAR, NULL, "Rings",               &cv_dummyrings,      20},
-	{IT_STRING | IT_CVAR, NULL, "Throw Rings",        &cv_ringslinger,     70},
+	{IT_STRING | IT_CVAR, NULL, "Lives",               &cv_dummylives,      30},
+	{IT_STRING | IT_CVAR, NULL, "Continues",           &cv_dummycontinues,  40},
 
-	{IT_STRING | IT_CALL, NULL, "Get All Emeralds",   M_GetAllEmeralds,    90},
+	{IT_STRING | IT_CVAR, NULL, "Gravity",             &cv_gravity,         60},
-	{IT_STRING | IT_CALL, NULL, "Destroy All Robots", M_DestroyRobots,    100},
+	{IT_STRING | IT_CVAR, NULL, "Throw Rings",         &cv_ringslinger,     70},
 
-	{IT_STRING | IT_CALL, NULL, "Ultimate Cheat",     M_UltimateCheat,    130},
+	{IT_STRING | IT_CALL, NULL, "Enable Super form",   M_AllowSuper,        90},
+	{IT_STRING | IT_CALL, NULL, "Get All Emeralds",    M_GetAllEmeralds,   100},
+	{IT_STRING | IT_CALL, NULL, "Destroy All Robots",  M_DestroyRobots,    110},
+
+	{IT_STRING | IT_CALL, NULL, "Ultimate Cheat",      M_UltimateCheat,    130},
 };
 
 // Sky Room Custom Unlocks
@@ -1536,7 +1540,7 @@ menu_t SR_PandoraDef =
 	&SPauseDef,
 	SR_PandorasBox,
 	M_DrawGenericMenu,
-	60, 40,
+	60, 30,
 	0,
 	M_ExitPandorasBox
 };
@@ -3822,6 +3826,16 @@ static boolean M_LevelAvailableOnPlatter(INT32 mapnum)
 
 	switch (levellistmode)
 	{
+		case LLM_CREATESERVER:
+			if (mapheaderinfo[mapnum]->menuflags & LF2_NOVISITNEEDED)
+				return true;
+
+			if (!mapvisited[mapnum]
+			&& (mapheaderinfo[mapnum]->typeoflevel & TOL_COOP)
+			&& (mapnum+1) > lastcoop)
+				return false;
+
+			return true;
 		case LLM_RECORDATTACK:
 		case LLM_NIGHTSATTACK:
 			if (mapheaderinfo[mapnum]->menuflags & LF2_NOVISITNEEDED)
@@ -3831,7 +3845,6 @@ static boolean M_LevelAvailableOnPlatter(INT32 mapnum)
 				return false;
 
 			// intentional fallthrough
-		case LLM_CREATESERVER:
 		case LLM_LEVELSELECT:
 		default:
 			return true;
@@ -5211,6 +5224,12 @@ static void M_PandorasBox(INT32 choice)
 	CV_StealthSetValue(&cv_dummyrings, max(players[consoleplayer].rings, 0));
 	CV_StealthSetValue(&cv_dummylives, players[consoleplayer].lives);
 	CV_StealthSetValue(&cv_dummycontinues, players[consoleplayer].continues);
+	SR_PandorasBox[6].status = ((players[consoleplayer].charflags & SF_SUPER)
+#ifndef DEVELOP
+	|| cv_skin.value == 1
+#endif
+	) ? (IT_GRAYEDOUT) : (IT_STRING | IT_CALL);
+	SR_PandorasBox[7].status = (emeralds == ((EMERALD7)*2)-1) ? (IT_GRAYEDOUT) : (IT_STRING | IT_CALL);
 	M_SetupNextMenu(&SR_PandoraDef);
 }
 
@@ -5347,12 +5366,24 @@ static void M_UltimateCheat(INT32 choice)
 	I_Quit();
 }
 
+static void M_AllowSuper(INT32 choice)
+{
+	(void)choice;
+
+	players[consoleplayer].charflags |= SF_SUPER;
+	M_StartMessage(M_GetText("You are now capable of turning super.\nRemember to get all the emeralds!\n"),NULL,MM_NOTHING);
+	SR_PandorasBox[6].status = IT_GRAYEDOUT;
+
+	G_SetGameModified(multiplayer);
+}
+
 static void M_GetAllEmeralds(INT32 choice)
 {
 	(void)choice;
 
 	emeralds = ((EMERALD7)*2)-1;
 	M_StartMessage(M_GetText("You now have all 7 emeralds.\nUse them wisely.\nWith great power comes great ring drain.\n"),NULL,MM_NOTHING);
+	SR_PandorasBox[7].status = IT_GRAYEDOUT;
 
 	G_SetGameModified(multiplayer);
 }

src/p_setup.c

@@ -3014,6 +3014,9 @@ boolean P_SetupLevel(boolean skipprecip)
 	if (!(netgame || multiplayer) && (!modifiedgame || savemoddata))
 		mapvisited[gamemap-1] |= MV_VISITED;
 
+	if ((maptol & TOL_COOP) && lastcoop < gamemap)
+		lastcoop = gamemap;
+
 	levelloading = false;
 
 	P_RunCachedActions();