/* 
 *   Gnome Nine Mens Morris
 *   Written by Dirk Farin <dirk.farin@gmx.de>
 * 
 *   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef NMM_BOARD_HH
#define NMM_BOARD_HH

#define EMPTY  0
#define WHITE  1
#define BLACK -1

typedef short piece;

void InitMillTab();

extern int neighbour[3*8][4];
extern char milltab[3*8][2][2];
extern char milltab_short[16][3];


struct Move
{
  Move() { }
  Move(const char*);

  void Reset() { start = end = take = -1; }
  bool IsEmpty() { return end==-1; }

  char  start;
  char  end;
  char  take;
};

struct Board
{
  piece board[3*8];
  char  next;
  char  n_white;
  char  n_black;

  int   ply;

  void Init();
  void DoMove(const Move&);
  void MoveToString(const Move&,char* buf) const;

  bool CurrentHasLost() const;
  bool OpponentHasLost() const;
  int  GenMoves(Move* result,int maxMoves) const;  // returns number of moves

  bool WouldCloseMill(int s,int e) const;
  bool IsInMill(int n) const;

  int  Freedom(int n) const;

private:
  int GenTakes(Move* result) const;
};


#endif