World Structure

The World Structure asset defines how every aspect of a world is generated. Below are all entries for this asset.

DefaultBiome

• Type: String
• Safe value: "Basic"

This Biome is used everywhere outside the delimiters.

Density

• Type: Density slot

• Safe value:

  "Type": "Constant",
  "Value": 1

Determines the Biome distribution in the world. The values are interpreted by the Biomes delimiter list.

Biomes

• Type: list of Biome delimiters
• Safe value: []

Each delimiter assigns a Biome to places in the world where the Density is within its bounds.

DefaultTransitionDistance

• Type: integer
• Safe value: 32

The distance, in blocks, it takes for one Biome to transition into another. The terrain in that region is interpolated between the two Biomes. Larger distances impact performance.

MaxBiomeEdgeDistance

• Type: integer
• Safe value: 0

The maximum distance from any Biome edge that world-gen tracks. This impacts Biomes that use the DistanceFromBiomeEdge Density node. Distances greater than this are read as -1.

SpawnPositions

• Type: PositionProvider slot

• Safe value:

  "Type": "List",
  "Positions": [{"X": 0, "Y": 140, "Z": 0}]

The world's spawn positions.

Framework

• Type: list of Framework modules
• Safe value: []

The Framework helps define the world's high-level structure. It ensures consistency across multiple Biomes. For this to work, the Biomes in a World Structure must correctly interpret the Framework entries.

// Example of a DecimalConstants Framework entry.
"Framework": [
  {
    "Type": "DecimalConstants",
    "Entries": [
      {
        "Name": "Base",
        "Value": 100
      }
    ]
  }
]

Below are the types of Framework entries.

Positions

A list of named Positions fields for the world.

• Entries: list of entries
  • Name: string. The name to use when referencing this entry from inside the Biomes.
  • Positions: PositionProvider slot.

DecimalConstants

A list of named decimal constants.

• Name: string. The constant's name.
• Value: decimal number.