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

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

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/*
 * This file is part of Spoutcraft (http://wiki.getspout.org/).
 * 
 * Spoutcraft 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.
 *
 * Spoutcraft 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.spout.packet;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;

import org.apache.commons.io.output.ByteArrayOutputStream;
import org.spoutcraft.spoutcraftapi.material.Block;
import org.spoutcraft.spoutcraftapi.material.MaterialData;

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

    public PacketBlockData() {

    }

    public void compress() {
        if (!compressed) {
            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;
    }

    public int getNumBytes() {
        return data != null ? data.length : 0 + 5;
    }

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

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

    public void run(int playerId) {
        if (data != null) {
            ByteBuffer result = ByteBuffer.allocate(data.length).put(data);
            for (int i = 0; i < data.length / 15; i++) {
                int index = i * 15;
                int id = result.get(index);
                short rawData = result.get(index + 1);
                Block block = MaterialData.getBlock(id, rawData);
                if (block != null) {
                    block.setHardness(result.getFloat(index + 2));
                    block.setLightLevel(result.getInt(index + 6));
                    block.setFriction(result.getFloat(index + 10));
                    block.setOpaque(result.get(index + 14) != 0);
                }
            }
        }
    }

    public void failure(int playerId) {

    }

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

    public int getVersion() {
        return 0;
    }

}