SocketItemMessage.java

package emasher.packethandling;

import cpw.mods.fml.common.network.simpleimpl.IMessage;
import cpw.mods.fml.common.network.simpleimpl.IMessageHandler;
import cpw.mods.fml.common.network.simpleimpl.MessageContext;
import emasher.tileentities.TileSocket;
import io.netty.buffer.ByteBuf;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.CompressedStreamTools;

public class SocketItemMessage implements IMessage {
	public byte[] msg;
	byte inventory;
	TileSocket ts;

	public SocketItemMessage() {
	}

	public SocketItemMessage( TileSocket ts, byte inventory ) {
		this.ts = ts;
		this.inventory = inventory;
	}

	@Override
	public void fromBytes( ByteBuf buf ) {
		msg = new byte[buf.capacity()];
		buf.readBytes( msg );
	}

	@Override
	public void toBytes( ByteBuf buf ) {
		ItemStack s = ts.inventory.getStackInSlot( inventory );
		byte[] NBTData = new byte[] {};
		try {
			if( s != null && s.getTagCompound() != null )
				NBTData = CompressedStreamTools.compress( s.getTagCompound() );
		} catch( Exception e ) {
			e.printStackTrace();
		}

		buf.capacity( 27 + NBTData.length );


		byte[] out = new byte[27 + NBTData.length];

		out[0] = 1;

		if( s != null ) {
			NetworkUtilities.toByte( out, Item.getIdFromItem( s.getItem() ), 1 );
			NetworkUtilities.toByte( out, s.getItemDamage(), 5 );
			NetworkUtilities.toByte( out, s.stackSize, 23 );
		} else {
			NetworkUtilities.toByte( out, -1, 1 );
		}

		NetworkUtilities.toByte( out, ts.xCoord, 9 );
		NetworkUtilities.toByte( out, ts.yCoord, 13 );
		NetworkUtilities.toByte( out, ts.zCoord, 17 );
		out[22] = ( byte ) inventory;

		for( int i = 0; i < NBTData.length; i++ ) {
			out[27 + i] = NBTData[i];
		}

		buf.writeBytes( out );
		msg = out;
	}

	public static class Handler implements IMessageHandler<SocketItemMessage, IMessage> {
		@Override
		public IMessage onMessage( SocketItemMessage message, MessageContext ctx ) {
			Handlers.onSocketItemMessage( message, ctx );

			return null;
		}
	}
}