{
  "atlas_id": "atlas_a",
  "atlas_version": 1,
  "atlas_size_px": [64, 64],
  "tile_size_px": 32,
  "tiles": [
    { "id": 1, "name": "grass", "uv": [0, 0, 32, 32], "walkable": true },
    { "id": 2, "name": "stone", "uv": [32, 0, 32, 32], "walkable": false, "blocks_sight": true }
  ]
}