Defer title start in intro responder to ticker

Fixes KartKrew/Kart#731

src/d_main.cpp

@@ -1075,6 +1075,8 @@ void D_ClearState(void)
 	wipegamestate = GS_NULL;
 }
 
+static boolean g_deferredtitle = false;
+
 //
 // D_StartTitle
 //
@@ -1085,6 +1087,17 @@ void D_StartTitle(void)
 	D_ClearState();
 	F_StartTitleScreen();
 	M_ClearMenus(false);
+	g_deferredtitle = true;
+}
+
+void D_SetDeferredStartTitle(boolean deferred)
+{
+	g_deferredtitle = true;
+}
+
+boolean D_IsDeferredStartTitle(void)
+{
+	return g_deferredtitle;
 }
 
 //

src/d_main.h

@@ -59,6 +59,8 @@ const char *D_Home(void);
 //
 void D_ClearState(void);
 void D_StartTitle(void);
+void D_SetDeferredStartTitle(boolean deferred);
+boolean D_IsDeferredStartTitle(void);
 
 #ifdef __cplusplus
 } // extern "C"

src/f_finale.c

@@ -39,6 +39,7 @@
 #include "p_setup.h"
 #include "st_stuff.h" // hud hiding
 #include "fastcmp.h"
+#include "r_fps.h"
 
 #include "lua_hud.h"
 #include "lua_hook.h"
@@ -385,6 +386,12 @@ void F_IntroTicker(void)
 
 	timetonext--;
 
+	if (D_IsDeferredStartTitle())
+	{
+		D_StartTitle();
+		return;
+	}
+
 	if (intro_scenenum == 0)
 	{
 		if (timetonext <= 0)

src/g_game.c

@@ -1339,7 +1339,7 @@ boolean G_Responder(event_t *ev)
 	{
 		if (F_IntroResponder(ev))
 		{
-			D_StartTitle();
+			D_SetDeferredStartTitle(true);
 			return true;
 		}
 	}