How do I set up the biome and update chunks in version 1.18.1? Up to version 1.17.1 I used PacketPlayOutMapChunk packets. However, in version 1.18.1, the PacketPlayOutMapChunk packet does not exist. Any way?
It is moved away from chunk column data. You need to define them as a chunksection. This is probably the packet you are looking for: ClientboundLevelChunkWithLightPacket. But i am not 100% sure. Spoiler: Protocol https://wiki.vg/Protocol#Chunk_Data_And_Update_Light Spoiler: Thread https://www.spigotmc.org/threads/chunk-data-in-1-18.536063/
Hey, sry for the late response! I don't think that there is another package. But if I'm not wrong, theres a spigot way. Something like this: Loop through all blocks in a Chunk and set the biome for each block. It sadly is very resource intensive.