{
  "params": {
    "spokes": {
      "type": "choice",
      "options": [
        6,
        8,
        10
      ],
      "default": 8,
      "label": "Spokes",
      "describe": "Number of spokes, each ending in a turned handle past the rim: 6 (small boat), 8 (classic) or 10 (big ship)."
    },
    "diameter": {
      "type": "range",
      "min": 0.8,
      "max": 1.8,
      "step": 0.05,
      "default": 1.2,
      "label": "Diameter",
      "describe": "Wheel diameter across the handle tips in metres. The pedestal grows with it so the hub stays about chest high."
    },
    "wood": {
      "type": "choice",
      "options": [
        "oak",
        "mahogany",
        "teak",
        "ebony"
      ],
      "default": "oak",
      "label": "Wood",
      "describe": "Timber of the wheel and pedestal: oak (mid brown), mahogany (red-brown), teak (golden), ebony (near black)."
    },
    "brass": {
      "type": "toggle",
      "default": true,
      "label": "Brass fittings",
      "describe": "Brass hub cap, rim band and pedestal trim. Off gives plain iron fittings."
    },
    "binnacle": {
      "type": "toggle",
      "default": true,
      "label": "Binnacle",
      "describe": "A compass binnacle on a short wooden stand beside the helm, with a brass hood and a lamp window that glows at night."
    }
  },
  "presets": {
    "captain's helm": {
      "spokes": 10,
      "wood": "mahogany",
      "brass": true,
      "binnacle": true,
      "diameter": 1.5
    },
    "fishing boat": {
      "spokes": 6,
      "wood": "teak",
      "brass": false,
      "binnacle": false,
      "diameter": 0.9
    },
    "ghost ship": {
      "wood": "ebony",
      "brass": false,
      "binnacle": true
    }
  },
  "night": {
    "lamp": {
      "zone": "lamp",
      "color": "#ffd38a",
      "intensity": 1.3,
      "describe": "The binnacle lamp lights the compass."
    }
  }
}