- assert(aux->width == state->width);
- assert(aux->height == state->height);
- ret = snewn(aux->width * aux->height + 2, char);
- ret[0] = 'S';
- for (i = 0; i < aux->width * aux->height; i++)
- ret[i+1] = "0123456789abcdef"[aux->tiles[i] & 0xF];
- ret[i+1] = '\0';
- return ret;