+// these bitmap pointers either point to allocated bitmaps or are NULL
+#define IMG_BITMAP_32x32 0
+#define IMG_BITMAP_16x16 1
+#define IMG_BITMAP_8x8 2
+#define IMG_BITMAP_4x4 3
+#define IMG_BITMAP_2x2 4
+#define IMG_BITMAP_1x1 5
+#define IMG_BITMAP_CUSTOM 6
+
+#define NUM_IMG_BITMAPS 7
+
+// this bitmap pointer points to one of the above bitmaps (do not free it)
+#define IMG_BITMAP_GAME 7
+
+#define NUM_IMG_BITMAP_POINTERS 8
+
+// this bitmap pointer points to the bitmap with default image size
+#define IMG_BITMAP_STANDARD IMG_BITMAP_32x32
+
+