Files

Bedrock Assets

This directory contains a number of different data files used to help support connecting via Bedrock Edition clients (including Java => Bedrock remapping).

  • block_states.nbt
    • mined from BDS (file hosted at pmmp/BedrockData, canonical_block_states.nbt)
    • Provides a listing of all blocks and block states that exist in Bedrock. Used to build a mapping from Java block states to Bedrock ones by matching (string) identifiers and data components.
  • blocks.nbt
    • downloaded from GeyserMC/mappings
    • Defines the exact Bedrock block identifier and property mappings for every Java Edition block state ID. Used in code generation to translate Java block states to Bedrock counterparts.
  • item_components.nbt
  • runtime_item_states.nbt
  • item_data_overrides.json
    • adapted from GeyserMC/mappings items.json.
    • Strips everything except the bedrock_data field (making it the value of each corresponding top-level key), omitting any 0 values.
    • Most of items.json is automatically generated, but that value appears to be manually maintained by the Geyser team. We separate that out for our own use, while keeping the rest generated.
  • biomes.json
    • downloaded from GeyserMC/mappings
    • Maps Java Edition biome identifiers to their corresponding Bedrock Edition biome ID. Used in code generation to translate Java biomes to Bedrock counterparts.
  • biome_definitions.nbt
    • downloaded from Kaooot/bedrock-network-data
    • Contains the gzip-compressed vanilla biome registry extracted from Bedrock Dedicated Server 1.26.40.
    • Validated and converted by pumpkin-codegen into the static BiomeDefinitionList wire payload used during Bedrock world initialization.
  • player_geometry.json
    • adapted from GeyserMC/Geyser (MIT License)
    • Provides valid standard wide and slim Bedrock player geometry for Java Edition player skins.
    • See LICENSE-GEYSER for the source license and copyright notice.

The Java-to-Bedrock skin conversion also uses Geyser's required-opacity masks under the same license.