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owengage / fastnbt

Fast serde serializer and deserializer for Minecraft's NBT and Anvil formats
MIT License
186 stars 34 forks source link

Old chunks heightmaps are unreliable #23

Closed owengage closed 3 years ago

owengage commented 3 years ago

Old chunks can have incorrect heightmaps (maybe new ones can too, but I've not seen it). There seems to be very little way to check this for sure, as players could of done all sorts of structures in that area.

The sure-fire way to the calculate the heightmaps ourselves, which will cause a general slow down, but would be correct for much more chunks. Etho's lets play world is a great example of a map with incorrect chunk heights.

owengage commented 3 years ago

No longer depend on heightmaps as of 0.16