buildcraft.core.network.PacketRPC.java Source code

Introduction

Here is the source code for buildcraft.core.network.PacketRPC.java

Source

/**
 * Copyright (c) 2011-2014, SpaceToad and the BuildCraft Team
 * http://www.mod-buildcraft.com
 *
 * BuildCraft is distributed under the terms of the Minecraft Mod Public
 * License 1.0, or MMPL. Please check the contents of the license located in
 * http://www.mod-buildcraft.com/MMPL-1.0.txt
 */
package buildcraft.core.network;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Random;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

import net.minecraft.entity.player.EntityPlayer;

public abstract class PacketRPC extends BuildCraftPacket {

    public static HashMap<Integer, ByteBuf> bufferedPackets = new HashMap<Integer, ByteBuf>();
    public static int GLOBAL_ID = new Random(new Date().getTime()).nextInt();

    protected int id;

    protected ByteBuf contents;

    public PacketRPC() {
        id = GLOBAL_ID++;
    }

    @Override
    public final int getID() {
        return PacketIds.RPC;
    }

    public void call(EntityPlayer sender) {
        if (bufferedPackets.containsKey(id)) {
            ByteBuf data = bufferedPackets.remove(id);

            if (data != null) {
                contents = data.writeBytes(contents);
            }
        }
    }

    public ArrayList<PacketRPC> breakIntoSmallerPackets(int maxSize) {
        ArrayList<PacketRPC> messages = new ArrayList<PacketRPC>();

        if (contents.readableBytes() < maxSize) {
            messages.add(this);
            return messages;
        }

        int start = 0;

        while (true) {
            ByteBuf subContents = contents
                    .readBytes(contents.readableBytes() > maxSize ? maxSize : contents.readableBytes());

            PacketRPCPart subPacket = new PacketRPCPart();
            subPacket.id = id;
            subPacket.contents = subContents;

            messages.add(subPacket);

            start += maxSize;

            if (contents.readableBytes() == 0) {
                break;
            }
        }

        contents = Unpooled.buffer();

        messages.add(this);

        return messages;
    }

    @Override
    public void readData(ByteBuf data) {
        id = data.readInt();
        int length = data.readInt();
        contents = Unpooled.buffer(length);
        data.readBytes(contents, length);
    }

    @Override
    public void writeData(ByteBuf data) {
        data.writeInt(id);
        data.writeInt(contents.readableBytes());
        data.writeBytes(contents);
    }

}