Fix house data corruption, progress to first screen

PortabilityLayer/QDManager.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "GpPixelFormat.h"
+
 struct ColorTable;
 struct CGraf;
 struct GDevice;
@@ -21,6 +23,8 @@ namespace PortabilityLayer
 
 		virtual QDState *GetState() = 0;
 
+		virtual int DepthForPixelFormat(GpPixelFormat_t pixelFormat) const = 0;
+
 		static QDManager *GetInstance();
 	};
 }