Subversion Repositories openrisc

/* GameManagerImpl.java --

 Copyright (C) 2005 Free Software Foundation, Inc.

 This file is part of GNU Classpath.

 GNU Classpath 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 2, or (at your option)

 any later version.

 GNU Classpath 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 GNU Classpath; see the file COPYING.  If not, write to the

 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

 02110-1301 USA.

 Linking this library statically or dynamically with other modules is

 making a combined work based on this library.  Thus, the terms and

 conditions of the GNU General Public License cover the whole

 combination.

 As a special exception, the copyright holders of this library give you

 permission to link this library with independent modules to produce an

 executable, regardless of the license terms of these independent

 modules, and to copy and distribute the resulting executable under

 terms of your choice, provided that you also meet, for each linked

 independent module, the terms and conditions of the license of that

 module.  An independent module is a module which is not derived from

 or based on this library.  If you modify this library, you may extend

 this exception to your version of the library, but you are not

 obligated to do so.  If you do not wish to do so, delete this

 exception statement from your version. */

package gnu.classpath.examples.CORBA.swing.x5;

import java.rmi.RemoteException;

import org.omg.CORBA.ORB;

import org.omg.CORBA.Object;

/**

 * The manager connects two players into the game.

 *

 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)

 */

public class GameManagerImpl

  implements GameManager

{

  /**

   * The game manager IOR.

   */

  static String ior;

  /**

   * The game manager ORB.

   */

  static ORB orb;

  /**

   * True if the manager started ok.

   */

  static boolean ok;

  /**

   * Another player that is already waiting for the game.

   */

  Player queuedPlayer = null;

  public synchronized void requestTheGame(Player newPlayer)

    throws RemoteException

  {

    System.out.println("Game requested");

    if (queuedPlayer == null)

      {

        // No other player so far.

        newPlayer.receive_chat(ChatConstants.GAME_SERVER,

          "Request registered, waiting for the other player to come...");

        System.out.println("Player queued.");

        queuedPlayer = newPlayer;

      }

    else if (queuedPlayer.equals(newPlayer))

      {

        // The same player applies again.

        newPlayer.receive_chat(ChatConstants.GAME_SERVER,

          "No other player so far... Please wait.");

      }

    else

      {

        // As the queued player waited for the game, we allow him/her

        // to start the game. This is a reward for waiting.

        newPlayer.receive_chat(ChatConstants.GAME_SERVER,

          "The other player is waiting. The game started, your "

            + "partner begins...");

        queuedPlayer.receive_chat(ChatConstants.GAME_SERVER,

          "The other player arrived. Lets play, you begin the game now...");

        newPlayer.start_game(queuedPlayer, false);

        queuedPlayer.start_game(newPlayer, true);

        queuedPlayer = null;

        System.out.println("Players connected.");

      }

  }

  /**

   * Unregister the player who left and is no longer waiting for another side.

   */

  public void unregister(Player player)

    throws RemoteException

  {

    if (queuedPlayer != null)

      {

        // We need to verify the identity of the player being unregistered.

        // The stubs, being derived from the org.omg.CORBA.Object, have the

        // method for this. This method compares the player host address,

        // used port and the object key.

        if (player instanceof Object && queuedPlayer instanceof Object)

          {

            Object a = (Object) player;

            Object b = (Object) queuedPlayer;

            if (a._is_equivalent(b))

              queuedPlayer = null;

          }

        else

          queuedPlayer = null;

      }

    System.out.println("Unregistering player");

  }

}