[
  {
    "type": "field_type",
    "id": "fd_dust",
    "intensity_levels": [
      { "name": "dust", "sym": "%", "color": "brown", "transparent": true, "dangerous": false, "concentration": 1 },
      {
        "name": "dust and grime",
        "sym": "%",
        "color": "brown",
        "transparent": true,
        "dangerous": false,
        "concentration": 1
      }
    ],
    "priority": 1,
    "dirty_transparency_cache": false,
    "display_items": true,
    "display_field": true,
    "description_affix": "covered_in",
    "mopsafe": true,
    "moppable": true,
    "percent_spread": 20,
    "phase": "gas",
    "looks_like": "t_open_air"
  },
  {
    "type": "field_type",
    "id": "fd_splinters",
    "intensity_levels": [ { "name": "wood debris", "sym": "%", "color": "brown", "transparent": true, "dangerous": false, "concentration": 1 } ],
    "priority": 2,
    "dirty_transparency_cache": false,
    "display_items": true,
    "display_field": true,
    "description_affix": "covered_in",
    "mopsafe": true,
    "moppable": true,
    "percent_spread": 8,
    "phase": "gas",
    "looks_like": "fd_dust"
  },
  {
    "id": "fd_mechanical_fluid",
    "type": "field_type",
    "intensity_levels": [
      { "name": "mechanical fluid splatter", "color": "light_gray" },
      { "name": "mechanical fluid stain" },
      { "name": "puddle of mechanical fluid", "color": "dark_gray" }
    ],
    "description_affix": "covered_in",
    "is_splattering": true,
    "mopsafe": true,
    "moppable": true,
    "half_life": "10 days",
    "phase": "liquid",
    "display_field": true,
    "looks_like": "fd_sludge"
  },
  {
    "id": "fd_dirty_water",
    "type": "field_type",
    "intensity_levels": [
      { "name": "dirty water splatter", "color": "light_gray" },
      { "name": "dirty water stain" },
      { "name": "puddle of dirty water", "color": "dark_gray" }
    ],
    "description_affix": "covered_in",
    "mopsafe": true,
    "moppable": true,
    "half_life": "2 hours",
    "phase": "liquid",
    "display_field": true,
    "looks_like": "water"
  }
]
