/* Yo Emacs, this -*- C++ -*-
 *******************************************************************
 *******************************************************************
 *
 *
 * KREVERSI
 *
 *
 *******************************************************************
 *
 * A Reversi (or sometimes called Othello) game
 *
 *******************************************************************
 *
 * Created 1997 by Mario Weilguni <mweilguni@sime.com>. This file
 * is ported from Mats Luthman's <Mats.Luthman@sylog.se> JAVA applet.
 * Many thanks to Mr. Luthman who has allowed me to put this port
 * under the GNU GPL. Without his wonderful game engine kreversi
 * would be just another of those Reversi programs a five year old
 * child could beat easily. But with it it's a worthy opponent!
 *
 * If you are interested on the JAVA applet of Mr. Luthman take a
 * look at http://www.sylog.se/~mats/
 *
 *******************************************************************
 *
 * This file is part of the KDE project "KREVERSI"
 *
 * KREVERSI 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.
 *
 * KREVERSI 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 KREVERSI; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 *******************************************************************
 */

// The class Game represents a complete or incomplete Othello game. It uses
// the classes Score and Move (and internally  Position).
// You can make moves, take back one move at a time, reset to initial position
// and get certain data on the current position.

//  Public functions:

//  public Game()
//     Creates a game with the initial position.

//  public void Reset()
//     Resets to the initial position.

//  public boolean MakeMove(Move m)
//     Makes the move m. Returns false if the move is not legal or when called
//     with a move where the player is Score.NOBODY.

//  public boolean TakeBackMove()
//     Takes back a move. Returns true if not at the initial position.

//  public int GetSquare(int x, int y)
//     Returns the piece at (x, y). Returns Score.NOBODY if the square is not
//     occupied.

//  public int GetScore(int player)
//     Returns the score for player.

//  public Move GetLastMove()
//     Returns the last move. Returns null if at the initial position.

//  public boolean MoveIsLegal(Move m)
//     Checks if move m is legal.

//  public boolean MoveIsPossible(int player)
//     Checks if there is a legal move for player.

//  public boolean MoveIsAtAllPossible()
//     Checks if there are any legal moves at all.

//  public int GetMoveNumber()
//     Returns move number.

//  public int GetWhoseTurn()
//     Returns the player in turn to play (if there are no legal moves
//     Score.NOBODY is returned).

//  public Move[] TurnedByLastMove()
//     Returns a vector of the squares that were changed by the last move.
//     The move that was actually played is at index 0. At the initial
//     position the length of the vector returned is zero. (Could be used
//     for faster updates of a graphical board).


#ifndef __GAME__H__
#define __GAME__H__


#include "Score.h"
#include "Move.h"
#include "Position.h"


class Game {
public:
  Game();
  
  void   newGame();
  
  Color  color(uint x, uint y) const;
  uint   score(Color color)    const;
  Move   lastMove()            const;
  Move   move(uint moveNo)     const;

  bool   moveIsLegal(Move &move) const;
  bool   moveIsPossible(Color color) const;
  bool   moveIsAtAllPossible() const;
  bool   makeMove(Move &move);
  bool   takeBackMove();

  uint   moveNumber() const  { return m_moveNumber;        }
  Color  toMove()     const  { return m_position.toMove(); }

  // Reversi specific methods
  bool   squareModified(uint x, uint y) const;
  bool   wasTurned(uint x, uint y)      const;

private:
  Move      m_moves[64];
  Position  m_position;		// The current position in the game
  Position  m_lastPosition;	// The last position in the game
                                // So that we can compare and see turned pieces
  uint      m_moveNumber;
};

#endif
