001/*
002 * Forge Mod Loader
003 * Copyright (c) 2012-2013 cpw.
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser Public License v2.1
006 * which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
008 * 
009 * Contributors:
010 *     cpw - implementation
011 */
012
013package cpw.mods.fml.common.network;
014
015import static cpw.mods.fml.common.network.FMLPacket.Type.MOD_IDENTIFIERS;
016
017import java.util.Collection;
018import java.util.Map;
019import java.util.Map.Entry;
020
021import net.minecraft.network.INetworkManager;
022import net.minecraft.network.packet.NetHandler;
023
024import com.google.common.collect.Maps;
025import com.google.common.io.ByteArrayDataInput;
026import com.google.common.io.ByteArrayDataOutput;
027import com.google.common.io.ByteStreams;
028
029public class ModIdentifiersPacket extends FMLPacket
030{
031
032    private Map<String, Integer> modIds = Maps.newHashMap();
033
034    public ModIdentifiersPacket()
035    {
036        super(MOD_IDENTIFIERS);
037    }
038
039    @Override
040    public byte[] generatePacket(Object... data)
041    {
042        ByteArrayDataOutput dat = ByteStreams.newDataOutput();
043        Collection<NetworkModHandler >networkMods = FMLNetworkHandler.instance().getNetworkIdMap().values();
044
045        dat.writeInt(networkMods.size());
046        for (NetworkModHandler handler : networkMods)
047        {
048            dat.writeUTF(handler.getContainer().getModId());
049            dat.writeInt(handler.getNetworkId());
050        }
051
052        // TODO send the other id maps as well
053        return dat.toByteArray();
054    }
055
056    @Override
057    public FMLPacket consumePacket(byte[] data)
058    {
059        ByteArrayDataInput dat = ByteStreams.newDataInput(data);
060        int listSize = dat.readInt();
061        for (int i = 0; i < listSize; i++)
062        {
063            String modId = dat.readUTF();
064            int networkId = dat.readInt();
065            modIds.put(modId, networkId);
066        }
067        return this;
068    }
069
070    @Override
071    public void execute(INetworkManager network, FMLNetworkHandler handler, NetHandler netHandler, String userName)
072    {
073        for (Entry<String,Integer> idEntry : modIds.entrySet())
074        {
075            handler.bindNetworkId(idEntry.getKey(), idEntry.getValue());
076        }
077        // TODO other id maps
078    }
079}