SourceDelegatePlayer.java :  » Game » java-board-games » d » g » boardgames » chess » player » Java Open Source

/*
Java board game library.
Copyright (C) 2011  Deepesh Garg

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 2
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

package d.g.boardgames.chess.player;

import d.g.boardgames.chess.*;
import d.g.boardgames.chess.ChessCellState.PieceColor;

public class SourceDelegatePlayer implements Player {

  PieceColor playerColor;
  MoveSource moveSource;
  
  Object mutex = new Object();
  ChessMove move;
  
  public SourceDelegatePlayer (PieceColor side, MoveSource source) {
    playerColor = side;
    moveSource = source;
    moveSource.registerSink(this);
  }
  
  public ChessMove getMove (ChessBoard board) {
    synchronized (mutex) {
      try {
        moveSource.startThinking(board);
        mutex.wait();
        return move;
      } catch (InterruptedException ie) {
        return null;
      }
    }
  }
  
  public void abortMove() {
    moveSource.stopThinking();
  }
  
  public void notifyMove (ChessMove chessMove) {
    move = chessMove;
    synchronized(mutex) {
      mutex.notify();
    }
  }
  
  public PieceColor getPlayerColor () {
    return playerColor;
  }
}