Lua_api.txt: Add documentation for biome definition

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paramat 2015-11-28 19:49:11 +00:00
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@ -3578,6 +3578,51 @@ Definition tables
-- ^ Can be a list of (or a single) biome names, IDs, or definitions.
}
### Biome definition (`register_biome`)
{
name = "tundra",
node_dust = "default:snow",
-- ^ Node dropped onto upper surface after all else is generated.
node_top = "default:dirt_with_snow",
depth_top = 1,
-- ^ Node forming surface layer of biome and thickness of this layer.
node_filler = "default:permafrost",
depth_filler = 3,
-- ^ Node forming lower layer of biome and thickness of this layer.
node_stone = "default:bluestone",
-- ^ Node that replaces all stone nodes between roughly y_min and y_max.
node_water_top = "default:ice",
depth_water_top = 10,
-- ^ Node forming a surface layer in seawater with the defined thickness.
node_water = "",
-- ^ Node that replaces all seawater nodes not in the defined surface layer.
node_river_water = "default:ice",
-- ^ Node that replaces river water in mapgens that use default:river_water.
y_min = 1,
y_max = 31000,
-- ^ Lower and upper limits for biome.
-- ^ Because biome is not recalculated for every node in a node column
-- ^ some biome materials can exceed their limits, especially stone.
-- ^ For each node column in a mapchunk, biome is only recalculated at column
-- ^ top and at each of these surfaces:
-- ^ Ground below air, water below air, ground below water.
-- ^ The selected biome then stays in effect for all nodes below until
-- ^ column base or the next biome recalculation.
heat_point = 0,
humidity_point = 50,
-- ^ Characteristic average temperature and humidity for the biome.
-- ^ These values create 'biome points' on a voronoi diagram that has heat
-- ^ and humidity as axes. The resulting voronoi cells determine which
-- ^ heat/humidity points belong to which biome, and therefore determine
-- ^ the area and location of each biome in the world.
-- ^ The biome points need to be carefully and evenly spaced on the voronoi
-- ^ diagram to result in roughly equal size biomes.
-- ^ Heat and humidity have average values of 50, vary mostly between
-- ^ 0 and 100 but also often exceed these values.
-- ^ Heat is not in degrees celcius, both values are abstract.
}
### Decoration definition (`register_decoration`)
{