{
  "params": {
    "scheme": {
      "type": "choice",
      "options": [
        "industrial",
        "rust",
        "white",
        "grey"
      ],
      "default": "industrial",
      "label": "Scheme",
      "describe": "Colours: industrial (safety yellow and black, blue thrusters), rust (worn brown hauler, orange thrusters), white (clean corporate white and blue) or grey (gunmetal with orange trim)."
    },
    "cargo": {
      "type": "choice",
      "options": [
        "containers",
        "tanks",
        "mixed"
      ],
      "default": "containers",
      "label": "Cargo",
      "describe": "What is clamped to the spine: containers (big coloured boxes), tanks (round fuel or gas tanks with banded ends) or mixed (alternating slots)."
    },
    "slots": {
      "type": "range",
      "min": 1,
      "max": 5,
      "step": 1,
      "default": 3,
      "label": "Cargo slots",
      "describe": "How many cargo slots along the spine, each holding four pods round it. 1 is a short 25 m tug, 5 a 76 m long hauler."
    },
    "engines": {
      "type": "range",
      "min": 2,
      "max": 4,
      "step": 1,
      "default": 3,
      "label": "Thrusters",
      "describe": "Number of main thrusters on the engine block, 2 to 4."
    },
    "legs": {
      "type": "toggle",
      "default": true,
      "label": "Landing legs",
      "describe": "Four landing legs with pads, for setting down on a pad or planet. Off = legs retracted; it then rests on its lowest cargo pods."
    }
  },
  "presets": {
    "fuel tanker": {
      "cargo": "tanks",
      "scheme": "white",
      "slots": 4
    },
    "rust bucket": {
      "scheme": "rust",
      "cargo": "mixed",
      "slots": 2,
      "engines": 2
    },
    "long hauler": {
      "slots": 5,
      "engines": 4,
      "legs": false
    }
  },
  "night": {
    "engine": {
      "zone": "engine",
      "intensity": 2.4,
      "describe": "Thruster nozzles and flames glow in the scheme colour."
    },
    "window": {
      "zone": "window",
      "color": "#ffe0a8",
      "intensity": 1,
      "describe": "The cockpit windows glow warm."
    },
    "beacon": {
      "zone": "beacon",
      "color": "#ff7a3a",
      "intensity": 1.8,
      "describe": "Amber running lights along the spine."
    },
    "nav": {
      "zone": "nav",
      "intensity": 1.8,
      "describe": "Red light to the left, green to the right on the cockpit module."
    }
  }
}