- /* !!! THIS DOES NOT WORK !!! REPLACED BITMAPS MAY HAVE SAME ADDRESS !!! */
-#if 0
- static Bitmap *main_bitmap_tile = NULL;
- static Bitmap *door_bitmap_tile = NULL;
-
- if (mask == REDRAW_FIELD)
- {
- if (background_bitmap_tile == main_bitmap_tile)
- return; /* main background tile has not changed */
-
- main_bitmap_tile = background_bitmap_tile;
- }
- else if (mask == REDRAW_DOOR_1)
- {
- if (background_bitmap_tile == door_bitmap_tile)
- return; /* main background tile has not changed */
-
- door_bitmap_tile = background_bitmap_tile;
- }
- else /* should not happen */
- return;
-#endif
-