makrukboard.h

/*
    This file is part of Cute Chess.
    Copyright (C) 2008-2018 Cute Chess authors

    Cute Chess 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 3 of the License, or
    (at your option) any later version.

    Cute Chess 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 Cute Chess.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef MAKRUKBOARD_H
#define MAKRUKBOARD_H

#include "shatranjboard.h"

namespace Chess {

class LIB_EXPORT MakrukBoard : public ShatranjBoard
{
    public:
        MakrukBoard();

        // Inherited from ShatranjBoard
        virtual Board* copy() const;
        virtual QString variant() const;
        virtual QString defaultFenString() const;
        virtual Result result();

    protected:
        enum MakrukPieceType
        {
            Bia    = Pawn,    
            Ma     = Knight,  
            Khon   = Bishop,  
            Rua    = Rook,    
            Met    = Queen,   
            Khun   = King     
        };

        static const unsigned SilverGeneralMovement = 256;
        virtual int promotionRank(int file = 0) const;
        int pieceCount(Side side = Side::NoSide,
                   int pieceType = Piece::NoPiece) const;
        virtual int initialPlyCount() const;
        virtual int countingLimit() const;
        enum CountingRules {Makruk, BareKing};
        virtual CountingRules countingRules() const;
        void initHistory();
        void setAllPieceCounters();
        Result resultFromCounting() const;
        virtual void generatePawnMoves(int sourceSquare,
                       QVarLengthArray<Move>& moves) const;
        virtual bool insufficientMaterial() const;

        // Inherited from ShatranjBoard
        virtual void vInitialize();
        virtual QString vFenString(FenNotation notation) const;
        virtual bool vSetFenString(const QStringList& fen);
        virtual bool inCheck(Side side, int square = 0) const;
        virtual void vMakeMove(const Move& move,
                       BoardTransition* transition);
        virtual void vUndoMove(const Move& move);
        virtual void generateMovesForPiece(QVarLengthArray<Move>& moves,
                           int pieceType,
                           int square) const;

    private:
        QVarLengthArray<int> m_silverGeneralOffsets[2];
        int m_promotionRank;
        enum CountingRules m_rules;
        bool m_useWesternCounting;
        // Data for reversing/unmaking a move
        struct MoveData
        {
            bool piecesHonour;
            int countingLimit;
            int plyCount;
            int totalPlies;
            int pieceCount[King + 1][2];
        };
        QVarLengthArray<MoveData> m_history;

        int material() const;
};

} // namespace Chess
#endif // MAKRUKBOARD_H