engine: client: implement v_dark in engine, instead of making it ref-specific

engine/client/cl_parse.c

@@ -1543,6 +1543,42 @@ void CL_SendConsistencyInfo( sizebuf_t *msg )
 	MSG_WriteOneBit( msg, 0 );
 }
 
+/*
+==================
+CL_StartDark
+==================
+*/
+static void CL_StartDark( void )
+{
+	if( Cvar_VariableValue( "v_dark" ))
+	{
+		screenfade_t		*sf = &clgame.fade;
+		float			fadetime = 5.0f;
+		client_textmessage_t	*title;
+
+		title = CL_TextMessageGet( "GAMETITLE" );
+		if( Host_IsQuakeCompatible( ))
+			fadetime = 1.0f;
+
+		if( title )
+		{
+			// get settings from titles.txt
+			sf->fadeEnd = title->holdtime + title->fadeout;
+			sf->fadeReset = title->fadeout;
+		}
+		else sf->fadeEnd = sf->fadeReset = fadetime;
+
+		sf->fadeFlags = FFADE_IN;
+		sf->fader = sf->fadeg = sf->fadeb = 0;
+		sf->fadealpha = 255;
+		sf->fadeSpeed = (float)sf->fadealpha / sf->fadeReset;
+		sf->fadeReset += cl.time;
+		sf->fadeEnd += sf->fadeReset;
+
+		Cvar_SetValue( "v_dark", 0.0f );
+	}
+}
+
 /*
 ==================
 CL_RegisterResources
@@ -1592,6 +1628,9 @@ void CL_RegisterResources( sizebuf_t *msg )
 			// tell rendering system we have a new set of models.
 			ref.dllFuncs.R_NewMap ();
 
+			// check if this map must start from dark screen
+			CL_StartDark ();
+
 			CL_SetupOverviewParams();
 
 			// release unused SpriteTextures

ref/gl/gl_rmisc.c

@@ -124,34 +124,6 @@ void R_NewMap( void )
 		R_ParseDetailTextures( filepath );
 	}
 
-	if( gEngfuncs.pfnGetCvarFloat( "v_dark" ))
-	{
-		screenfade_t		*sf = gEngfuncs.GetScreenFade();
-		float			fadetime = 5.0f;
-		client_textmessage_t	*title;
-
-		title = gEngfuncs.pfnTextMessageGet( "GAMETITLE" );
-		if( ENGINE_GET_PARM( PARM_QUAKE_COMPATIBLE ))
-			fadetime = 1.0f;
-
-		if( title )
-		{
-			// get settings from titles.txt
-			sf->fadeEnd = title->holdtime + title->fadeout;
-			sf->fadeReset = title->fadeout;
-		}
-		else sf->fadeEnd = sf->fadeReset = fadetime;
-
-		sf->fadeFlags = FFADE_IN;
-		sf->fader = sf->fadeg = sf->fadeb = 0;
-		sf->fadealpha = 255;
-		sf->fadeSpeed = (float)sf->fadealpha / sf->fadeReset;
-		sf->fadeReset += gpGlobals->time;
-		sf->fadeEnd += sf->fadeReset;
-
-		gEngfuncs.Cvar_SetValue( "v_dark", 0.0f );
-	}
-
 	// clear out efrags in case the level hasn't been reloaded
 	for( i = 0; i < WORLDMODEL->numleafs; i++ )
 		WORLDMODEL->leafs[i+1].efrags = NULL;