What would be the correct approach for sending the initial chunk? about node-minecraft-protocol HOT 9 CLOSED

There's a little bit of a gotcha with 0x38. If you look at protocol.js you can see that all those properties are namespaced under the "data" variable. Also those other length and count properties are implied from the meta array and the compressed chunk data buffer length. So if you're sending 0x38, you have to do something like this:

client.write(0x38, {data: {
    skyLightSent: true,
    compressedChunkData: world,
    meta: []
  }});

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Woah, didn't noticed! Still, it's failing with TypeError: Cannot read property 'length' of undefined on the same line, so I guess my code to create the world it's broken. Is there any specific way to create the data for a world? Or any guideline to code something that generates the world? I've been reading http://wiki.vg/SMP_Map_Format but I don't really understand how should I translate the parameters there to the code

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did you set [] for meta instead of null?

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Yes, I did. Basically I copied the code example, changing variables, of course

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@mappum might be willing to provide a code example. I know he has a server using this module.

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That'd be great! I've seen his redstone.io project and seems really promising!

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Update: after fiddling around the code and searching on GH, I've managed to put this 0x38 function which doesn't crashes the server. If I fly a little I finally find a grass block. This is what it looks currently: http://d.pr/i/UrAg. I guess it's now time to see how to make the map bigger and all.

This is the code:

var buffer = new Buffer((4096 + 2048 + 2048 + 2048) * 4 + 256);
  buffer.fill(0);
  buffer.writeUInt8(2, 8192 + 273);
  zlib.deflate(buffer, function(err, compressed) {

    client.write(0x38, {data: {
      skyLightSent: true,
      compressedChunkData: compressed,
      meta: [{
        x: 0,
        z: 0,
        bitMap: parseInt('00111100', 2),
        addBitMap: 0,
      }]
    }});

  });

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Do you still need help, or may I close this issue?

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Nope, it's already fixed 😄

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