- update window title with current level name

src/d_main.cpp

@@ -144,6 +144,7 @@ void ParseGLDefs();
 void DrawFullscreenSubtitle(const char *text);
 void D_Cleanup();
 void FreeSBarInfoScript();
+void I_UpdateWindowTitle();
 
 // PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
 
@@ -161,7 +162,6 @@ EXTERN_CVAR (Bool, lookstrafe)
 EXTERN_CVAR (Int, screenblocks)
 EXTERN_CVAR (Bool, sv_cheats)
 EXTERN_CVAR (Bool, sv_unlimited_pickup)
-EXTERN_CVAR (Bool, I_FriendlyWindowTitle)
 EXTERN_CVAR (Bool, r_drawplayersprites)
 EXTERN_CVAR (Bool, show_messages)
 
@@ -2848,8 +2848,7 @@ static int D_DoomMain_Internal (void)
 
 		D_DoAnonStats();
 
-		if (I_FriendlyWindowTitle)
-			I_SetWindowTitle(DoomStartupInfo.Name.GetChars());
+		I_UpdateWindowTitle();
 
 		D_DoomLoop ();		// this only returns if a 'restart' CCMD is given.
 		// 
@@ -3086,11 +3085,27 @@ DEFINE_FIELD_X(InputEventData, event_t, data3)
 DEFINE_FIELD_X(InputEventData, event_t, x)
 DEFINE_FIELD_X(InputEventData, event_t, y)
 
-
-CUSTOM_CVAR(Bool, I_FriendlyWindowTitle, true, CVAR_GLOBALCONFIG|CVAR_ARCHIVE|CVAR_NOINITCALL)
+CUSTOM_CVAR(Int, I_FriendlyWindowTitle, 1, CVAR_GLOBALCONFIG|CVAR_ARCHIVE|CVAR_NOINITCALL)
 {
-	if (self)
-		I_SetWindowTitle(DoomStartupInfo.Name.GetChars());
-	else
-		I_SetWindowTitle(NULL);
+	I_UpdateWindowTitle();
+}
+
+void I_UpdateWindowTitle()
+{
+	switch (I_FriendlyWindowTitle)
+	{
+	case 1:
+		if (level.LevelName && level.LevelName.GetChars()[0])
+		{
+			FString titlestr;
+			titlestr.Format("%s - %s", level.LevelName, DoomStartupInfo.Name.GetChars());
+			I_SetWindowTitle(titlestr.GetChars());
+			break;
+		}
+	case 2:
+		I_SetWindowTitle(DoomStartupInfo.Name.GetChars());
+		break;
+	default:
+		I_SetWindowTitle(NULL);
+	}
 }

src/g_cvars.cpp

@@ -41,6 +41,8 @@
 #include "v_font.h"
 #include "utf8.h"
 
+void I_UpdateWindowTitle();
+
 CVAR (Bool, cl_spreaddecals, true, CVAR_ARCHIVE)
 CVAR(Bool, var_pushers, true, CVAR_SERVERINFO);
 CVAR(Bool, gl_cachenodes, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
@@ -201,4 +203,5 @@ CUSTOM_CVAR(String, language, "auto", CVAR_ARCHIVE | CVAR_NOINITCALL | CVAR_GLOB
 		if (Level->info != nullptr) Level->LevelName = Level->info->LookupLevelName();
 	}
 	UpdateGenericUI(ui_generic);
+	I_UpdateWindowTitle();
 }

src/g_level.cpp

@@ -110,6 +110,7 @@ extern uint8_t globalfreeze, globalchangefreeze;
 #define PCLS_ID			MAKE_ID('p','c','L','s')
 
 void G_VerifySkill();
+void I_UpdateWindowTitle();
 
 CUSTOM_CVAR(Bool, gl_brightfog, false, CVAR_ARCHIVE | CVAR_NOINITCALL)
 {
@@ -1060,7 +1061,7 @@ void G_DoLoadLevel(const FString &nextmapname, int position, bool autosave, bool
 
 	C_FlushDisplay();
 	P_ResetSightCounters(true);
-
+	I_UpdateWindowTitle();
 }
 
 void FLevelLocals::DoLoadLevel(const FString &nextmapname, int position, bool autosave, bool newGame)