com.vethrfolnir.game.network.mu.packets.MuWritePacket.java Source code

Introduction

Here is the source code for com.vethrfolnir.game.network.mu.packets.MuWritePacket.java

Source

/**
 * Copyright (C) 2013-2014 Project-Vethrfolnir
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.vethrfolnir.game.network.mu.packets;

import io.netty.buffer.ByteBuf;

import java.io.UnsupportedEncodingException;
import java.nio.ByteOrder;

import com.vethrfolnir.game.network.mu.MuClient;
import com.vethrfolnir.network.NetworkClient;
import com.vethrfolnir.network.WritePacket;

/**
 * @author Vlad
 *
 */
public abstract class MuWritePacket extends WritePacket {

    public abstract void write(MuClient client, ByteBuf buff, Object... params);

    @Override
    public final void write(NetworkClient context, ByteBuf buff, Object... params) {
        write((MuClient) context, buff, params);
    }

    public void writeD(ByteBuf buff, int value, ByteOrder order) {
        switch (order.toString()) {
        case "BIG_ENDIAN": {
            buff.writeByte(value >> 8);
            buff.writeByte(value >> 16);
            buff.writeByte(value >> 32);
            buff.writeByte(value & 0xFF);
            break;
        }
        case "LITTLE_ENDIAN": {
            buff.writeByte(value & 0xFF);
            buff.writeByte(value >> 32);
            buff.writeByte(value >> 16);
            buff.writeByte(value >> 8);
        }
        }
    }

    public void writeSh(ByteBuf buff, int value, ByteOrder order) {
        switch (order.toString()) {
        case "BIG_ENDIAN": {
            buff.writeByte(value >> 8);
            buff.writeByte(value & 0xFF);
            break;
        }
        case "LITTLE_ENDIAN": {
            buff.writeByte(value & 0xFF);
            buff.writeByte(value >> 8);
        }
        }
    }

    @Override
    public void writeS(ByteBuf buff, String value) {
        writeS(buff, value, value.length());
    }

    public void writeS(ByteBuf buff, String value, int max) {
        if (value == null)
            throw new RuntimeException("Value is null!");

        try {
            int l = value.length();
            buff.writeBytes(value.getBytes("ISO-8859-1"));
            for (int i = l; i < max; i++)
                buff.writeByte(0x00);
        } catch (UnsupportedEncodingException e) {
            log.warn("Failed writing string!", e);
        }
    }

    public void shiftC(ByteBuf buff, int pos) {
        byte b = buff.array()[pos];
        b &= 0x7F;
        b |= 0x80;
        buff.array()[pos] = b;
    }
}