PacketSetPlayerCurrentItem

package com.techmage.magetech.network;

import com.techmage.magetech.init.ModItems;
import cpw.mods.fml.common.network.ByteBufUtils;
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 cpw.mods.fml.relauncher.Side;
import io.netty.buffer.ByteBuf;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;

public class PacketSetPlayerCurrentItem implements IMessage
{

    private ItemStack currentItem;

    public PacketSetPlayerCurrentItem() { }

    public PacketSetPlayerCurrentItem(ItemStack currentItem)
    {
        this.currentItem = currentItem;
    }

    @Override
    public void fromBytes(ByteBuf buf)
    {
        currentItem = ByteBufUtils.readItemStack(buf);
    }

    @Override
    public void toBytes(ByteBuf buf)
    {
        ByteBufUtils.writeItemStack(buf, currentItem);
    }

    public static class Handler implements IMessageHandler<PacketSetPlayerCurrentItem, IMessage>
    {
        @Override
        public IMessage onMessage(PacketSetPlayerCurrentItem msg, MessageContext ctx)
        {
            if (ctx.side == Side.SERVER)
            {
                EntityPlayer player = ctx.getServerHandler().playerEntity;
                player.inventory.setInventorySlotContents(player.inventory.currentItem, msg.currentItem);
            }
            return null;
        }
    }
}