{
  "width": 5,
  "height": 5,
  "x_walls": [ 4, 0, 0, 0, 4, 4, 0, 0, 0, 4, 2, 0, 0, 0, 66, 4, 0, 0, 0, 4, 4, 0, 0, 0, 4 ],
  "y_walls": [ 4, 4, 66, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 66, 4, 4 ],
  "ceiling": [ 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42, 42 ],
  "floor": [ 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23 ]
}