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Lua_api.txt: Add documentation for biome definition
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@ -3578,6 +3578,51 @@ Definition tables
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-- ^ Can be a list of (or a single) biome names, IDs, or definitions.
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}
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### Biome definition (`register_biome`)
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{
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name = "tundra",
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node_dust = "default:snow",
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-- ^ Node dropped onto upper surface after all else is generated.
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node_top = "default:dirt_with_snow",
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depth_top = 1,
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-- ^ Node forming surface layer of biome and thickness of this layer.
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node_filler = "default:permafrost",
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depth_filler = 3,
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-- ^ Node forming lower layer of biome and thickness of this layer.
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node_stone = "default:bluestone",
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-- ^ Node that replaces all stone nodes between roughly y_min and y_max.
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node_water_top = "default:ice",
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depth_water_top = 10,
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-- ^ Node forming a surface layer in seawater with the defined thickness.
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node_water = "",
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-- ^ Node that replaces all seawater nodes not in the defined surface layer.
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node_river_water = "default:ice",
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-- ^ Node that replaces river water in mapgens that use default:river_water.
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y_min = 1,
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y_max = 31000,
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-- ^ Lower and upper limits for biome.
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-- ^ Because biome is not recalculated for every node in a node column
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-- ^ some biome materials can exceed their limits, especially stone.
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-- ^ For each node column in a mapchunk, biome is only recalculated at column
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-- ^ top and at each of these surfaces:
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-- ^ Ground below air, water below air, ground below water.
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-- ^ The selected biome then stays in effect for all nodes below until
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-- ^ column base or the next biome recalculation.
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heat_point = 0,
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humidity_point = 50,
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-- ^ Characteristic average temperature and humidity for the biome.
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-- ^ These values create 'biome points' on a voronoi diagram that has heat
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-- ^ and humidity as axes. The resulting voronoi cells determine which
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-- ^ heat/humidity points belong to which biome, and therefore determine
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-- ^ the area and location of each biome in the world.
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-- ^ The biome points need to be carefully and evenly spaced on the voronoi
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-- ^ diagram to result in roughly equal size biomes.
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-- ^ Heat and humidity have average values of 50, vary mostly between
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-- ^ 0 and 100 but also often exceed these values.
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-- ^ Heat is not in degrees celcius, both values are abstract.
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}
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### Decoration definition (`register_decoration`)
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{
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