cubicchunks.network.WorldEncoder.java Source code

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Here is the source code for cubicchunks.network.WorldEncoder.java

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/*
 *  This file is part of Cubic Chunks Mod, licensed under the MIT License (MIT).
 *
 *  Copyright (c) 2015 contributors
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 */
package cubicchunks.network;

import net.minecraft.network.PacketBuffer;
import net.minecraft.world.chunk.storage.ExtendedBlockStorage;

import cubicchunks.util.Coords;
import cubicchunks.world.ClientHeightMap;
import cubicchunks.world.ServerHeightMap;
import cubicchunks.world.column.Column;
import cubicchunks.world.cube.Cube;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

public class WorldEncoder {

    public static void encodeCube(PacketBuffer out, Cube cube) {
        // 1. emptiness
        out.writeBoolean(cube.isEmpty());

        if (!cube.isEmpty()) {
            ExtendedBlockStorage storage = cube.getStorage();

            // 2. block IDs and metadata
            storage.getData().write(out);

            // 3. block light
            out.writeBytes(storage.getBlocklightArray().getData());

            if (!cube.getCubicWorld().getProvider().getHasNoSky()) {
                // 4. sky light
                out.writeBytes(storage.getSkylightArray().getData());
            }

            // 5. heightmap and bottom-block-y. Each non-empty cube has a chance to update this data.
            // trying to keep track of when it changes would be complex, so send it wil all cubes
            byte[] heightmaps = ((ServerHeightMap) cube.getColumn().getOpacityIndex()).getDataForClient();
            assert heightmaps.length == 256 * 2 * 4;
            out.writeBytes(heightmaps);
        }
    }

    public static void encodeColumn(PacketBuffer out, Column column) {
        // 1. biomes
        out.writeBytes(column.getBiomeArray());
    }

    public static void decodeColumn(PacketBuffer in, Column column) {
        // 1. biomes
        in.readBytes(column.getBiomeArray());
    }

    public static void decodeCube(PacketBuffer in, Cube cube) {
        // if the cube came from the server, it must be live
        cube.setClientCube();

        // 1. emptiness
        boolean isEmpty = in.readBoolean();

        if (!isEmpty) {
            ExtendedBlockStorage storage = new ExtendedBlockStorage(Coords.cubeToMinBlock(cube.getY()),
                    !cube.getCubicWorld().getProvider().getHasNoSky());
            cube.setStorage(storage);

            storage.getData().read(in);

            // 3. block light
            in.readBytes(storage.getBlocklightArray().getData());

            if (!cube.getCubicWorld().getProvider().getHasNoSky()) {
                // 4. sky light
                in.readBytes(storage.getSkylightArray().getData());
            }

            // 5. heightmaps TODO: NO NO NO! Don't send this with Cubes!
            byte[] heightmaps = new byte[256 * 2 * 4];
            in.readBytes(heightmaps);
            ClientHeightMap coi = ((ClientHeightMap) cube.getColumn().getOpacityIndex());
            coi.setData(heightmaps);
            //cube.initialClientSkylight();
            storage.removeInvalidBlocks();
        }
    }

    public static int getEncodedSize(Column column) {
        return column.getBiomeArray().length;
    }

    public static int getEncodedSize(Cube cube) {
        int size = 0;
        size++;//isEmpty
        if (!cube.isEmpty()) {
            ExtendedBlockStorage storage = cube.getStorage();
            size += storage.getData().getSerializedSize();
            size += storage.getBlocklightArray().getData().length;
            if (!cube.getCubicWorld().getProvider().getHasNoSky()) {
                size += storage.getSkylightArray().getData().length;
            }
            //heightmaps
            size += 256 * 2 * 4;
        }
        return size;
    }

    public static ByteBuf createByteBufForWrite(byte[] data) {
        ByteBuf bytebuf = Unpooled.wrappedBuffer(data);
        bytebuf.writerIndex(0);
        return bytebuf;
    }

    public static ByteBuf createByteBufForRead(byte[] data) {
        ByteBuf bytebuf = Unpooled.wrappedBuffer(data);
        bytebuf.readerIndex(0);
        return bytebuf;
    }
}