content: /**
   * This file is part of Aion-Lightning <aion-lightning.org>.
   *
   *  Aion-Lightning 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.
   *
   *  Aion-Lightning 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 Aion-Lightning.
   *  If not, see <http://www.gnu.org/licenses/>.
   */
  package com.aionemu.gameserver.network.loginserver;
  
  import java.nio.ByteBuffer;
  
  import com.aionemu.commons.network.packet.BaseServerPacket;
  
  /**
   * Base class for every GameServer -> Login Server Packet.
   *
   * @author -Nemesiss-
   */
  public abstract class LsServerPacket extends BaseServerPacket {
  
  	/**
  	 * constructs new server packet with specified opcode.
  	 *
  	 * @param opcode
  	 *            packet id
  	 */
  	protected LsServerPacket(int opcode) {
  		super(opcode);
  	}
  
  	/**
  	 * Write this packet data for given connection, to given buffer.
  	 *
  	 * @param con
  	 * @param buf
  	 */
  	public final void write(LoginServerConnection con, ByteBuffer buffer) {
  		setBuf(buffer);
  		buf.putShort((short) 0);
  		buf.put((byte) this.getOpcode());
  		writeImpl(con);
  		buf.flip();
  		buf.putShort((short) buf.limit());
  		buf.position(0);
  	}
  
  	/**
  	 * Write data that this packet represents to given byte buffer.
  	 *
  	 * @param con
  	 * @param buf
  	 */
  	protected abstract void writeImpl(LoginServerConnection con);
  }
  