Use simple array for Pawns Connected bonus #2061

[stockfish] / src / position.h

diff --git a/src/position.h b/src/position.h
index e1eacf26d01530cfc9df3fb2e22e7233d394738e..ce13017dd0e5ab4389f2ba19d7d86c96b0a38871 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -97,8 +97,8 @@ public:
   template<PieceType Pt> Square square(Color c) const;
 
   // Castling
-  int can_castle(Color c) const;
-  int can_castle(CastlingRight cr) const;
+  int castling_rights(Color c) const;
+  bool can_castle(CastlingRight cr) const;
   bool castling_impeded(CastlingRight cr) const;
   Square castling_rook_square(CastlingRight cr) const;
 
@@ -260,12 +260,12 @@ inline Square Position::ep_square() const {
   return st->epSquare;
 }
 
-inline int Position::can_castle(CastlingRight cr) const {
+inline bool Position::can_castle(CastlingRight cr) const {
   return st->castlingRights & cr;
 }
 
-inline int Position::can_castle(Color c) const {
-  return st->castlingRights & ((WHITE_OO | WHITE_OOO) << (2 * c));
+inline int Position::castling_rights(Color c) const {
+  return st->castlingRights & (c == WHITE ? WHITE_CASTLING : BLACK_CASTLING);
 }
 
 inline bool Position::castling_impeded(CastlingRight cr) const {
@@ -310,7 +310,7 @@ inline Bitboard Position::check_squares(PieceType pt) const {
 }
 
 inline bool Position::pawn_passed(Color c, Square s) const {
-  return !(pieces(~c, PAWN) & passed_pawn_mask(c, s));
+  return !(pieces(~c, PAWN) & passed_pawn_span(c, s));
 }
 
 inline bool Position::advanced_pawn_push(Move m) const {
@@ -413,7 +413,7 @@ inline void Position::move_piece(Piece pc, Square from, Square to) {
 
   // index[from] is not updated and becomes stale. This works as long as index[]
   // is accessed just by known occupied squares.
-  Bitboard fromTo = SquareBB[from] ^ SquareBB[to];
+  Bitboard fromTo = square_bb(from) ^ square_bb(to);
   byTypeBB[ALL_PIECES] ^= fromTo;
   byTypeBB[type_of(pc)] ^= fromTo;
   byColorBB[color_of(pc)] ^= fromTo;