#define bullet_width 10
#define bullet_height 14
static unsigned char bullet_bits[] = {
   0x00, 0x00, 0x06, 0x00, 0x0c, 0x00, 0x18, 0x00, 0x30, 0x00, 0x60, 0x00,
   0xc0, 0x00, 0xc0, 0x00, 0x60, 0x00, 0x30, 0x00, 0x18, 0x00, 0x0c, 0x00,
   0x06, 0x00, 0x00, 0x00 };