kingOpenMove.h

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/* kingOpenMove.h
 */
#ifndef OSL_MOVE_CLASSIFIER_KING_OPEN_MOVE_H
#define OSL_MOVE_CLASSIFIER_KING_OPEN_MOVE_H
 
#include "osl/move_classifier/classifierTraits.h"
#include "osl/numEffectState.h"
 
namespace osl
{
  namespace move_classifier
  {
    template <Player P>
    struct KingOpenMove
    {
      static bool isMember(const NumEffectState& state, 
                           Ptype /*ptype*/,Square from,Square to)
      {
        int num=state.pieceAt(from).number();
        assert(Piece::isPieceNum(num));
        if(!state.pinOrOpen(P).test(num)) return false;
        // from to kingが一直線に並べば false
        Square king=state.kingSquare<P>();
        return Board_Table.getShort8Unsafe<P>(king,to)
          != Board_Table.getShort8<P>(king,from);
      }

      static bool isMember(const NumEffectState& state, 
                           Ptype ptype,Square from,Square to,
                           Square exceptFor)
      {
        return isMemberMain<true>(state, ptype, from, to, exceptFor);
      }
    private:
      template <bool hasException>
      static bool
#ifdef __GNUC__
        __attribute__ ((pure))
#endif
      isMemberMain(const NumEffectState& state, 
                   Ptype ptype,Square from,Square to,
                   Square exceptFor);
    };
 
    template <Player P> struct ClassifierTraits<KingOpenMove<P> >
    {
      static const bool drop_suitable = false;
      static const bool result_if_drop = false;
    };
    
  } // namespace move_classifier
} // namespace osl
#endif /* OSL_MOVE_CLASSIFIER_NOT_KING_OPEN_MOVE_H */
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