#define shelter_width 13
#define shelter_height 8
static unsigned char shelter_bits[] = {
   0xff, 0x1f, 0xff, 0x1f, 0xff, 0x1f, 0xff, 0x1f, 0xff, 0x1f, 0x1f, 0x1f,
   0x0f, 0x1e, 0x0f, 0x1e };