net.minecraft.server.PacketPlayOutMapChunk Maven / Gradle / Ivy

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package net.minecraft.server;

import com.google.common.collect.Lists;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;

public class PacketPlayOutMapChunk implements Packet {
	
	private int a;
	private int b;
	private PacketPlayOutMapChunk.ChunkMap c;
	private boolean d;
	
	public PacketPlayOutMapChunk() {
	}
	
	public PacketPlayOutMapChunk(Chunk chunk, boolean flag, int i) {
		this.a = chunk.locX;
		this.b = chunk.locZ;
		this.d = flag;
		this.c = a(chunk, flag, !chunk.getWorld().worldProvider.o(), i);
		chunk.world.spigotConfig.antiXrayInstance.obfuscateSync(chunk.locX, chunk.locZ, c.b, c.a, chunk.world);
	}
	
	protected static int a(int i, boolean flag, boolean flag1) {
		int j = i * 2 * 16 * 16 * 16;
		int k = i * 16 * 16 * 16 / 2;
		int l = flag ? i * 16 * 16 * 16 / 2 : 0;
		int i1 = flag1 ? 256 : 0;
		
		return j + k + l + i1;
	}
	
	public static PacketPlayOutMapChunk.ChunkMap a(Chunk chunk, boolean flag, boolean flag1, int i) {
		ChunkSection[] achunksection = chunk.getSections();
		PacketPlayOutMapChunk.ChunkMap packetplayoutmapchunk_chunkmap = new PacketPlayOutMapChunk.ChunkMap();
		ArrayList arraylist = Lists.newArrayList();
		
		int j;
		
		for (j = 0; j < achunksection.length; ++j) {
			ChunkSection chunksection = achunksection[j];
			
			if (chunksection != null && (!flag || !chunksection.a()) && (i & 1 << j) != 0) {
				packetplayoutmapchunk_chunkmap.b |= 1 << j;
				arraylist.add(chunksection);
			}
		}
		
		packetplayoutmapchunk_chunkmap.a = new byte[a(Integer.bitCount(packetplayoutmapchunk_chunkmap.b), flag1, flag)];
		j = 0;
		Iterator iterator = arraylist.iterator();
		
		ChunkSection chunksection1;
		
		while (iterator.hasNext()) {
			chunksection1 = iterator.next();
			char[] achar = chunksection1.getIdArray();
			int k = achar.length;
			
			for (char c0 : achar) {
				packetplayoutmapchunk_chunkmap.a[j++] = (byte) (c0 & 255);
				packetplayoutmapchunk_chunkmap.a[j++] = (byte) (c0 >> 8 & 255);
			}
		}
		
		for (iterator = arraylist.iterator(); iterator.hasNext(); j = a(chunksection1.getEmittedLightArray().a(), packetplayoutmapchunk_chunkmap.a, j)) {
			chunksection1 = iterator.next();
		}
		
		if (flag1) {
			for (iterator = arraylist.iterator(); iterator.hasNext(); j = a(chunksection1.getSkyLightArray().a(), packetplayoutmapchunk_chunkmap.a, j)) {
				chunksection1 = iterator.next();
			}
		}
		
		if (flag) {
			a(chunk.getBiomeIndex(), packetplayoutmapchunk_chunkmap.a, j);
		}
		
		return packetplayoutmapchunk_chunkmap;
	}
	
	private static int a(byte[] abyte, byte[] abyte1, int i) {
		System.arraycopy(abyte, 0, abyte1, i, abyte.length);
		return i + abyte.length;
	}
	
	public void a(PacketDataSerializer packetdataserializer) throws IOException {
		this.a = packetdataserializer.readInt();
		this.b = packetdataserializer.readInt();
		this.d = packetdataserializer.readBoolean();
		this.c = new PacketPlayOutMapChunk.ChunkMap();
		this.c.b = packetdataserializer.readShort();
		this.c.a = packetdataserializer.a();
	}
	
	public void b(PacketDataSerializer packetdataserializer) throws IOException {
		packetdataserializer.writeInt(this.a);
		packetdataserializer.writeInt(this.b);
		packetdataserializer.writeBoolean(this.d);
		packetdataserializer.writeShort((short) (this.c.b & '\uffff'));
		packetdataserializer.a(this.c.a);
	}
	
	public void a(PacketListenerPlayOut packetlistenerplayout) {
		packetlistenerplayout.a(this);
	}
	
	public static class ChunkMap {
		
		public byte[] a;
		public int b;
		
		public ChunkMap() {
		}
	}
}