GitHub - mjdominus/nbt: Read and decode Minecrafts NBT files

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Read and decode Minecrafts NBT files

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Name		Name	Last commit message	Last commit date
Latest commit History 26 Commits
.gitignore		.gitignore
README		README
TODO		TODO
dumpmap		dumpmap
find-duplicates		find-duplicates
histogram		histogram
nbt.py		nbt.py
overview		overview
pixmap.py		pixmap.py
sample-map.nbt		sample-map.nbt
sortbyscale		sortbyscale
test		test
tiny.nbt		tiny.nbt

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Libraries for processing Minecraft's NBT files.

Details:
  https://minecraft.gamepedia.com/NBT_format

Immediate goal: Read a map file and dump out a PNG image
Details:
  https://minecraft.gamepedia.com/Map_item_format


To use:
  1. Copy map(s) from  MINECRAFT/saves/WORLD/data/map_*.dat
  2. Uncompress: gzip -dc map_123.dat > map_123.nbt
  3. Convert one map to pnm: dumpmap map_123.nbt > map_123.pnm
     Or to png: dumpmap map_123.nbt | pnmtopng > map_123.pnm
  4. Join many maps and convert:
     dumpmap $(sortbyscale map-files....) | pnmtopng > big-map.png


Blog post about this project:  https://blog.plover.com/games/minecraft-maps.html