{
  "params": {
    "load": {
      "type": "choice",
      "options": [
        "ore",
        "coal",
        "gold",
        "empty"
      ],
      "default": "ore",
      "label": "Load",
      "describe": "What the cart carries: ore (grey rock with gold flecks), coal (black lumps), gold (a heap of nuggets), empty."
    },
    "tub": {
      "type": "choice",
      "options": [
        "rust",
        "steel grey",
        "red",
        "green"
      ],
      "default": "rust",
      "label": "Tub",
      "describe": "Tub paint: rust (worn brown steel), steel grey, red, green."
    },
    "rails": {
      "type": "toggle",
      "default": true,
      "label": "Rails",
      "describe": "A 2.4 m piece of narrow-gauge track with timber sleepers under the cart."
    },
    "seed": {
      "type": "range",
      "min": 1,
      "max": 40,
      "step": 1,
      "default": 4,
      "label": "Seed",
      "describe": "Reshapes the heap of ore, coal or gold. Same seed always builds the same cart."
    }
  },
  "presets": {
    "gold strike": {
      "load": "gold",
      "tub": "steel grey"
    },
    "coal tub": {
      "load": "coal",
      "tub": "red",
      "seed": 9
    },
    "abandoned cart": {
      "load": "empty",
      "tub": "rust",
      "rails": true
    }
  },
  "night": null
}