-extern unsigned char tab_blank[TILE_MAX];
-extern unsigned char tab_acid[TILE_MAX];
-extern unsigned char tab_fake_acid[TILE_MAX];
-extern unsigned char tab_amoeba[TILE_MAX];
-extern unsigned char tab_android_move[TILE_MAX];
-extern unsigned short tab_explode_normal[TILE_MAX];
-extern unsigned short tab_explode_dynamite[TILE_MAX];
-