C++ (Cpp) DELTA_INC_ALLの例

コード例 #1

ファイル: see.cpp プロジェクト: Distrotech/gnuchess

static void alist_build(alist_t * alist, const board_t * board, int to, int colour) {

   const sq_t * ptr;
   int from;
   int piece;
   int delta;
   int inc;
   int sq;
   int pawn;

   ASSERT(alist!=NULL);
   ASSERT(board!=NULL);
   ASSERT(SQUARE_IS_OK(to));
   ASSERT(COLOUR_IS_OK(colour));

   // piece attacks

   for (ptr = &board->piece[colour][0]; (from=*ptr) != SquareNone; ptr++) {

      piece = board->square[from];
      delta = to - from;

      if (PSEUDO_ATTACK(piece,delta)) {

         inc = DELTA_INC_ALL(delta);
         ASSERT(inc!=IncNone);

         sq = from;
         do {
            sq += inc;
            if (sq == to) { // attack
               alist_add(alist,from,board);
               break;
            }
         } while (board->square[sq] == Empty);
      }
   }

   // pawn attacks

   inc = PAWN_MOVE_INC(colour);
   pawn = PAWN_MAKE(colour);

   from = to - (inc-1);
   if (board->square[from] == pawn) alist_add(alist,from,board);

   from = to - (inc+1);
   if (board->square[from] == pawn) alist_add(alist,from,board);
}

コード例 #2

ファイル: attack.cpp プロジェクト: ageneau/scid

bool is_attacked(const board_t * board, int to, int colour) {

   int inc;
   int pawn;
   const sq_t * ptr;
   int from;
   int piece;
   int delta;
   int sq;

   ASSERT(board!=NULL);
   ASSERT(SQUARE_IS_OK(to));
   ASSERT(COLOUR_IS_OK(colour));

   // pawn attack

   inc = PAWN_MOVE_INC(colour);
   pawn = PAWN_MAKE(colour);

   if (board->square[to-(inc-1)] == pawn) return true;
   if (board->square[to-(inc+1)] == pawn) return true;

   // piece attack

   for (ptr = &board->piece[colour][0]; (from=*ptr) != SquareNone; ptr++) {

      piece = board->square[from];
      delta = to - from;

      if (PSEUDO_ATTACK(piece,delta)) {

         inc = DELTA_INC_ALL(delta);
         ASSERT(inc!=IncNone);

         sq = from;
         do {
            sq += inc;
            if (sq == to) return true;
         } while (board->square[sq] == Empty);
      }
   }

   return false;
}

コード例 #3

ファイル: attack.cpp プロジェクト: ageneau/scid

bool line_is_empty(const board_t * board, int from, int to) {

   int delta;
   int inc, sq;

   ASSERT(board!=NULL);
   ASSERT(SQUARE_IS_OK(from));
   ASSERT(SQUARE_IS_OK(to));

   delta = to - from;
   ASSERT(delta_is_ok(delta));

   inc = DELTA_INC_ALL(delta);
   ASSERT(inc!=IncNone);

   sq = from;
   do {
      sq += inc;
      if (sq == to) return true;
   } while (board->square[sq] == Empty);

   return false; // blocker
}