Snapshot Chunk Data

SnapshotChunkData

A read-only view of the chunk being sent to a player, passed to biome conditionals so they can inspect the real biome and block data before a phony biome is applied. Values are computed lazily and cached, so a conditional only pays for what it reads.

Caution

bukkitSnapshot() is empty in the normal packet-handler path, a real snapshot can’t be built safely on the Netty thread. It’s only present when you construct a BukkitSnapshotChunkData from a snapshot you got on the main thread.

• location(): The chunk this data belongs to.
• centerBiome(): The source biome at the chunk’s center sample.
• biomeAt(int, int, int): The source biome at chunk-relative block coordinates. y is relative to the bottom of the chunk column, not world Y.
• bukkitSnapshot(): The full Bukkit ChunkSnapshot, if one is available — empty for the packet-backed implementation. Prefer centerBiome() or biomeAt(...) instead.