/***************************************************************************
                          NullDirection.h  -  description
                             -------------------
    begin                : Tue May 22 2001
    copyright            : (C) 2001 by Sven Reichard
    email                : reichard@math.udel.edu
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
// -*-c++-*-
# ifndef NullDirection_h
# define NullDirection_h
# include "Directions/Direction.h"
namespace Alice
{
class NullDirection:
  public Direction
{
public:
  virtual ~NullDirection();
  virtual Square appliedTo(const Square& sq) const;
  Square blockedSquareFrom(const Square& sq, const Board& board) const;
  NullDirection();
  virtual bool isNull() const {return true;}
};
}; // namespace Alice
# endif // NullDirection_h
