`JigsawStructure`

A structure grown from jigsaw pieces, with how often it appears: JigsawStructure dungeon { biomes = #minecraft:is_overworld, step = underground_structures, spacing = 32, separation = 12, height = AboveBottom(20), start = start, pools = { start = [Piece("start")] } }. It writes the structure set, the structure and one template pool per entry of pools. Its name stands for the structure, as in /locate structure ${dungeon}.

JigsawStructure name {
  biomes = ...
  step = ...
  spacing = ...
  separation = ...
  height = ...
  start = ...
  pools = ...
}

JigsawStructure is a Blueprint in the prelude: it is written in MMS, and every project has it.

Fields

biomes: Ids<worldgen/biome>
Where it can start: a biome, a tag such as #minecraft:is_overworld, or a list of biomes.
step: DecorationStep
The generation step it is placed in, such as surface_structures or underground_structures.
spacing: int
The size in chunks of the grid cells it is spread over; about one structure per cell.
separation: int
saltoptional: int?
height: HeightProvider
The height of the start piece, such as AboveBottom(20) or Constant(64).
heightmapoptional: Heightmap?
The start piece's y is taken from the ground's surface instead, with height added to it, as villages do.
depthdefault 7: int
How many pieces deep it grows from the start piece, from 1 to 20.
max_distancedefault 80: int
How far in blocks a piece can be from the start piece, from 1 to 128.
terrain_adaptationoptional: TerrainAdaptation?
How the terrain fits around it: beard_thin and beard_box raise the ground under it, bury sinks it, encapsulate fills around it.
start: Id<worldgen/template_pool>
The pool the start piece comes from, usually one of pools.
pools: {string: [WeightedElement] | TemplatePool}
The template pools, by name: a list of pieces, such as start = [Piece("start")], or a whole pool, such as halls = { fallback = caps, elements = [Piece("halls/hall")] }. Each one is a TemplatePool of that name, so jigsaw blocks draw from <namespace>:<name>.