{
  "params": {
    "radius": {
      "type": "range",
      "min": 1.4,
      "max": 2.6,
      "step": 0.1,
      "default": 1.8,
      "label": "Radius",
      "describe": "Inner radius of the ring in metres. 1.4 holds one or two people, 2.6 a crew and gear."
    },
    "rows": {
      "type": "range",
      "min": 3,
      "max": 8,
      "step": 1,
      "default": 6,
      "label": "Height",
      "describe": "Rows of sandbags, about 15 cm each: 3 is a low wall to kneel behind, 8 stands chest high (1.2 m)."
    },
    "bags": {
      "type": "choice",
      "options": [
        "woodland",
        "desert",
        "arctic",
        "grey"
      ],
      "default": "woodland",
      "label": "Bags",
      "describe": "Sandbag cloth colour: woodland (olive-tan), desert (sand), arctic (off-white) or grey."
    },
    "roof": {
      "type": "toggle",
      "default": false,
      "label": "Roof",
      "describe": "A corrugated steel roof on four timber posts, with a few sandbags weighing it down."
    },
    "searchlight": {
      "type": "toggle",
      "default": true,
      "label": "Searchlight",
      "describe": "A drum searchlight on a tripod inside the ring, aimed over the front wall; its lens glows at night."
    }
  },
  "presets": {
    "desert outpost": {
      "bags": "desert",
      "roof": true,
      "rows": 7
    },
    "arctic lookout": {
      "bags": "arctic",
      "radius": 1.5
    },
    "low firing pit": {
      "rows": 3,
      "radius": 2.4,
      "searchlight": false
    }
  },
  "night": {
    "lamp": {
      "zone": "lamp",
      "color": "#fff4cf",
      "intensity": 2,
      "describe": "Searchlight lens."
    }
  }
}