Talk:Pre-release protocol

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Protocol Change 13w21a

It appears there may be a new packet in 13w21a. It may be a 2C packet. Anyone have any insight into the changes for this snapshot?


vbisbest 12:39, 29 May 2013 (EST)

Chunk Deallocation

In the discussion of the removal of the Chunk Allocation Packet, the article says: "To deallocate memory you need to send a MapChunk packet, which only contains biome data for plains(all biome bytes set to 1)." According to my testing of a custom client with a vanilla Minecraft 1.3 server, when a chunk goes out of range the server actually sends a Chunk Data (0x33) packet ground_up_continuous=true, primary_bit_map=0, add_bit_map=0, and real actual biome data (in my case it was mostly plains and some desert). This suggests that the sentence should be edited to: "To deallocate memory you need to send a Chunk Data (0x33) packet which only contains biome data.". If someone else can confirm this, please post here. I think this makes more sense, and it's easier to test for in the client because you don't have to look at the compressed data at all. --DavidEGrayson 23:33, 28 July 2012 (MST)

In my client I check for the ground_up_continuous=true, primary_bit_map=0, add_bit_map=0. The biome data is sent because it is always sent.
I don't know if it's real or not, but you don't need to check it
Shoghicp 12:15, 30 July 2012 (MST)