Georges Oates Larsen GeorgesOatesLarsen

GeorgesOatesLarsen / readChunk_1_9.js

Last active January 7, 2017 14:49 — forked from rom1504/readChunk_1_9.js

read 1.9 chunk using protodef

	const fs=require("fs");
	var Chunk = require('prismarine-chunk')("1.8");
	var Vec3 = require("vec3");

	// based on http://wiki.vg/SMP_Map_Format#Format
	// testing data from https://download.rom1504.fr/minecraft/chunks/chunks-1.9/
	// see http://lunarco.de/minecraft/chunks/ for explanations
	// also see https://gist.github.com/Gjum/0375b643ec13a42ab3c0
	// and https://github.com/SpockBotMC/SpockBot/blob/0535c31/spockbot/plugins/tools/smpmap.py

GeorgesOatesLarsen / dump_algorithm.js

Created January 7, 2017 17:42

	dump() {
	//OLD/INTERNAL FORMAT:
	//The first wlh*2 bytes are blocks, each of which are shorts.
	//After that, the first wlh*0.5 bytes are block-light-levels, each half-bytes.
	//Next, the first wlh*0.5 bytes are sky-light-levels, each half-bytes.
	//Finally, the next w*l bytes are biomes.


	let outputBuffer = Buffer.alloc(0);

GeorgesOatesLarsen / dump_pack.js

Last active January 7, 2017 18:58

	packBlockData(rawdata, bitsPerBlock)
	{
	let blockCount = Chunk.l * Chunk.w * 16;
	let resultantBuffer = Buffer.alloc(blockCount * bitsPerBlock/8);
	for (let block = 0; block < blockCount; block++) {
	//Determine the start-bit for the block.
	let bit = block * bitsPerBlock;
	//Determine the start-byte for that bit.
	let targetlong = Math.floor(bit/64);
	//We write backwards from the end of the long. First, we determine the local writing start.

GeorgesOatesLarsen / gist:533a805ed50434301c6538ca68b23553

Created January 7, 2017 19:24