org.getspout.spoutapi.packet.PacketBlockData.java Source code

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Here is the source code for org.getspout.spoutapi.packet.PacketBlockData.java

Source

/*
 * This file is part of SpoutPlugin.
 *
 * Copyright (c) 2011 Spout LLC <http://www.spout.org/>
 * SpoutPlugin is licensed under the GNU Lesser General Public License.
 *
 * SpoutPlugin is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * SpoutPlugin is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.getspout.spoutapi.packet;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Iterator;
import java.util.Set;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;

import org.apache.commons.io.output.ByteArrayOutputStream;

import org.getspout.spoutapi.io.SpoutInputStream;
import org.getspout.spoutapi.io.SpoutOutputStream;
import org.getspout.spoutapi.material.Block;

public class PacketBlockData implements CompressiblePacket {
    byte[] data;
    boolean compressed = false;

    public PacketBlockData() {
    }

    public PacketBlockData(Set<Block> modifiedData) {
        if (modifiedData.size() > 0) {
            ByteBuffer rawData = ByteBuffer.allocate(modifiedData.size() * (15));

            Iterator<Block> i = modifiedData.iterator();
            while (i.hasNext()) {
                Block next = i.next();

                rawData.put((byte) next.getRawId());
                rawData.put((byte) next.getRawData());
                rawData.putFloat(next.getHardness());
                rawData.putInt(next.getLightLevel());
                rawData.putFloat(next.getFriction());
                rawData.put((byte) (next.isOpaque() ? 1 : 0));
            }

            data = rawData.array();
        }
    }

    public void compress() {
        if (!compressed) {
            if (data != null) {
                Deflater deflater = new Deflater();
                deflater.setInput(data);
                deflater.setLevel(Deflater.BEST_COMPRESSION);
                deflater.finish();
                ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);
                byte[] buffer = new byte[1024];
                while (!deflater.finished()) {
                    int bytesCompressed = deflater.deflate(buffer);
                    bos.write(buffer, 0, bytesCompressed);
                }
                try {
                    bos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
                data = bos.toByteArray();
            }
            compressed = true;
        }
    }

    public void decompress() {
        if (compressed) {
            Inflater decompressor = new Inflater();
            decompressor.setInput(data);

            ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);

            byte[] buf = new byte[1024];
            while (!decompressor.finished()) {
                try {
                    int count = decompressor.inflate(buf);
                    bos.write(buf, 0, count);
                } catch (DataFormatException e) {
                }
            }
            try {
                bos.close();
            } catch (IOException e) {
            }

            data = bos.toByteArray();
        }
    }

    public boolean isCompressed() {
        return compressed || (data == null || data.length < 256); //dont compress for small sizes
    }

    @Override
    public void readData(SpoutInputStream input) throws IOException {
        int size = input.readInt();
        compressed = input.readBoolean();
        if (size > 0) {
            data = new byte[size];
            input.read(data);
        }
    }

    @Override
    public void writeData(SpoutOutputStream output) throws IOException {
        output.writeInt(data == null ? 0 : data.length);
        output.writeBoolean(compressed);
        if (data != null) {
            output.write(data);
        }
    }

    @Override
    public void run(int playerId) {
    }

    @Override
    public void failure(int playerId) {
    }

    @Override
    public PacketType getPacketType() {
        return PacketType.PacketBlockData;
    }

    @Override
    public int getVersion() {
        return 0;
    }
}