Example to save chunks from a server

[JosephLA1]

Hello,

Is there an example to simply join a server and view the chunks given by the server?

Thank you.

[Tnze]

Hi, you can take a look at the "daze" example, when server sends a chunk, the onChunkLoad function is called. Then you can gain the chunk data from worldManager.

[JosephLA1]

Thanks. I was using that before but could not figure out how to save normal minecraft chunks or even view the blocks. I am new to this.

[Tnze]

You can use the save package to save the chunks. But the structure definitions inside might not update to date. Some data might be dropped.

[JosephLA1]

I am using this code:

func onChunkLoad(pos level.ChunkPos) error {
	chunk := worldManager.Columns[pos]
	saveChunk := new(save.Chunk)
	err := level.ChunkToSave(chunk, saveChunk)
	if err != nil {
		log.Println(err)
		return err
	}

	file, _ := os.Create(fmt.Sprintf("chunks/r.%d.%d.mca", pos[0], pos[1]))
	defer file.Close()
	data, err := saveChunk.Data(1)
	if err != nil {
		log.Println(err)
		return err
	}

	file.Write(data)
	return nil
}

but I am getting encode "block_ticks" error: unsupport type nbt.RawMessage. What am I doing wrong? Thanks.

[Tnze]

The data scheme inside level and save are maintained by hand. Maybe there is something outdated. Feel free to clone go-mc and make some change. You can use tools like NBTExplorer to compare the actual data generated by the game and the Chunk structure written in save.