#define fortress_width 16
#define fortress_height 16
static char fortress_bits[] = {
 0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x00,0xe0,0x00,0xfc,0x07,0x1c,0x07,0xec,
 0x06,0x16,0x0d,0x17,0x1d,0x16,0x0d,0xec,0x06,0x1c,0x07,0xfc,0x07,0xe0,0x00,
 0x40,0x00};