+extern Bitmap *screenBitmap;
+
+extern Bitmap *sp_objects;
+
+extern int GfxElementLast[SP_MAX_PLAYFIELD_WIDTH][SP_MAX_PLAYFIELD_HEIGHT];
+extern int GfxGraphicLast[SP_MAX_PLAYFIELD_WIDTH][SP_MAX_PLAYFIELD_HEIGHT];
+extern int GfxGraphic[SP_MAX_PLAYFIELD_WIDTH][SP_MAX_PLAYFIELD_HEIGHT];
+extern int GfxFrame[SP_MAX_PLAYFIELD_WIDTH][SP_MAX_PLAYFIELD_HEIGHT];