package net.minecraft.server;

import com.google.common.collect.Lists;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

public class PacketPlayOutLightUpdate implements Packet<PacketListenerPlayOut> {

    private int a;
    private int b;
    private int c;
    private int d;
    private int e;
    private int f;
    private List<byte[]> g;
    private List<byte[]> h;

    public PacketPlayOutLightUpdate() {}

    public PacketPlayOutLightUpdate(ChunkCoordIntPair chunkcoordintpair, LightEngine lightengine) {
        this.a = chunkcoordintpair.x;
        this.b = chunkcoordintpair.z;
        this.g = Lists.newArrayList();
        this.h = Lists.newArrayList();

        for (int i = 0; i < 18; ++i) {
            NibbleArray nibblearray = lightengine.a(EnumSkyBlock.SKY).a(SectionPosition.a(chunkcoordintpair, -1 + i));
            NibbleArray nibblearray1 = lightengine.a(EnumSkyBlock.BLOCK).a(SectionPosition.a(chunkcoordintpair, -1 + i));

            if (nibblearray != null) {
                if (nibblearray.c()) {
                    this.e |= 1 << i;
                } else {
                    this.c |= 1 << i;
                    this.g.add(nibblearray.asBytes().clone());
                }
            }

            if (nibblearray1 != null) {
                if (nibblearray1.c()) {
                    this.f |= 1 << i;
                } else {
                    this.d |= 1 << i;
                    this.h.add(nibblearray1.asBytes().clone());
                }
            }
        }

    }

    public PacketPlayOutLightUpdate(ChunkCoordIntPair chunkcoordintpair, LightEngine lightengine, int i, int j) {
        this.a = chunkcoordintpair.x;
        this.b = chunkcoordintpair.z;
        this.c = i;
        this.d = j;
        this.g = Lists.newArrayList();
        this.h = Lists.newArrayList();

        for (int k = 0; k < 18; ++k) {
            NibbleArray nibblearray;

            if ((this.c & 1 << k) != 0) {
                nibblearray = lightengine.a(EnumSkyBlock.SKY).a(SectionPosition.a(chunkcoordintpair, -1 + k));
                if (nibblearray != null && !nibblearray.c()) {
                    this.g.add(nibblearray.asBytes().clone());
                } else {
                    this.c &= ~(1 << k);
                    if (nibblearray != null) {
                        this.e |= 1 << k;
                    }
                }
            }

            if ((this.d & 1 << k) != 0) {
                nibblearray = lightengine.a(EnumSkyBlock.BLOCK).a(SectionPosition.a(chunkcoordintpair, -1 + k));
                if (nibblearray != null && !nibblearray.c()) {
                    this.h.add(nibblearray.asBytes().clone());
                } else {
                    this.d &= ~(1 << k);
                    if (nibblearray != null) {
                        this.f |= 1 << k;
                    }
                }
            }
        }

    }

    @Override
    public void a(PacketDataSerializer packetdataserializer) throws IOException {
        this.a = packetdataserializer.i();
        this.b = packetdataserializer.i();
        this.c = packetdataserializer.i();
        this.d = packetdataserializer.i();
        this.e = packetdataserializer.i();
        this.f = packetdataserializer.i();
        this.g = Lists.newArrayList();

        int i;

        for (i = 0; i < 18; ++i) {
            if ((this.c & 1 << i) != 0) {
                this.g.add(packetdataserializer.b(2048));
            }
        }

        this.h = Lists.newArrayList();

        for (i = 0; i < 18; ++i) {
            if ((this.d & 1 << i) != 0) {
                this.h.add(packetdataserializer.b(2048));
            }
        }

    }

    @Override
    public void b(PacketDataSerializer packetdataserializer) throws IOException {
        packetdataserializer.d(this.a);
        packetdataserializer.d(this.b);
        packetdataserializer.d(this.c);
        packetdataserializer.d(this.d);
        packetdataserializer.d(this.e);
        packetdataserializer.d(this.f);
        Iterator iterator = this.g.iterator();

        byte[] abyte;

        while (iterator.hasNext()) {
            abyte = (byte[]) iterator.next();
            packetdataserializer.a(abyte);
        }

        iterator = this.h.iterator();

        while (iterator.hasNext()) {
            abyte = (byte[]) iterator.next();
            packetdataserializer.a(abyte);
        }

    }

    public void a(PacketListenerPlayOut packetlistenerplayout) {
        packetlistenerplayout.a(this);
    }
}