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Axiom Blueprint (version 1)

ImHex include

// Use pattern for entire file
#include <mc-schematic/axiom-blueprint-v1.hexpat>

// Use pattern for part of your file
#include <mc-schematic/axiom-blueprint-v1/incl.hexpat>
mc_schematic::axiom_blueprint_v1::main file @ 0x00;

Structure

  • u8[4] = {0x0A, 0xE5, 0xBB, 0x36}: Magic number. Is it being used to identify blueprint version?
  • Metadata
    • be u32 metadataLength: Length for metadata section.
    • u8[metadataLength] => minecraft::nbt metadata: Metadata content in Minecraft NBT format.
  • Preview Image
    • be u32 previewImgLength: Length for preview image section.
    • u8[previewImgLength] => image::png previewImg: Blueprint preview PNG image.
  • Structure Data
    • be u32 structureLength: Length for structure data section.
    • u8[structureLength] => compress::gzip => minecraft::nbt structure: Structure data. The data itself is gzipped.

minecraft::nbt: metadata tree

  • compound
    • long Version: Version of the blueprint. Currently 0.
    • string Author: Author of this blueprint.
    • int BlockCount: Number of blocks in this blueprint. (used for indexing?).
    • byte LockedThumbnail
    • string Name: Name of blueprint.
    • string[] Tags: List of tags for this blueprint.
    • float ThumbnailPitch: Thumbnail pitch angle. Can be used to reconstruct thumbnail.
    • float ThumbnailYaw: Thumbnail yaw angle. Can be used to reconstruct thumbnail.

minecraft::nbt: structure tree

  • compound
    • compound[] BlockRegion
      • compound BlockStates
        • long[] data: (list length appears to be always 256).
          • Under 16 block types: Each entry is a sequence of 16 blocks (long integers are 8 bytes in size), where each block is a 4-bit integer that points to a block state in palette. That means this could hold 4096 blocks, or an entire cubic chunk (16x16x16 blocks).
          • More than 16 block types: I'm sorry but guessing the structure is too much work to do. If you are interested, consider looking at test_struct.nbt.gz in your NBT viewer + ImHex.
        • compound[] palette: A list of block states in a form of palette.
          • string Name: Namespaced IDs (eg: minecraft:diamond_block or my_mod:tiny_potato).
          • //: It is likely that each entry in palette is a block state, so there could be something else other than Name, like Rotation for example.
      • int X: Cubic chunk position. Multiply this by 16 and you'll get position in blueprint.
      • int Y: Cubic chunk position.
      • int Z: Cubic chunk position.