#define tuffwall_width 16
#define tuffwall_height 16
static char tuffwall_bits[] = {
   0xff, 0xff, 0x83, 0xc0, 0x05, 0xa1, 0x89, 0x90, 0xf1, 0x8f, 0x31, 0x8c,
   0x51, 0x8a, 0x9b, 0xa9, 0x95, 0xd9, 0x51, 0x8a, 0x31, 0x8c, 0xf1, 0x8f,
   0x09, 0x91, 0x85, 0xa0, 0x03, 0xc1, 0xff, 0xff};