X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.h;h=8e2ecf6019b812eb5872e2f7db27d36d65ea2528;hp=4b524ec463e0b1be67a460dc9ee64cef04daf6da;hb=2c955f25de9d4c263b6e6d37fef06b378eec49a0;hpb=8365f8ac1ee7f62db18fca8498b3fdb1640674d9

diff --git a/src/position.h b/src/position.h
index 4b524ec4..8e2ecf60 100644
--- a/src/position.h
+++ b/src/position.h
@@ -86,8 +86,8 @@ struct UndoInfo {
   Key key, pawnKey, materialKey;
   int rule50;
   Move lastMove;
-  PieceType capture;
   Value mgValue, egValue;
+  PieceType capture;
 };
 
 
@@ -308,6 +308,9 @@ private:
   void undo_ep_move(Move m);
   void find_checkers();
 
+  template<PieceType Piece>
+  void update_checkers(Bitboard* pCheckersBB, Square ksq, Square from, Square to, Bitboard dcCandidates);
+
   template<PieceType Piece, bool FindPinned>
   Bitboard hidden_checks(Color c, Square ksq) const;
 
@@ -526,7 +529,12 @@ inline Square Position::initial_qr_square(Color c) const {
 }
 
 inline Bitboard Position::pawn_attacks(Color c, Square s) const {
-  return StepAttackBB[pawn_of_color(c)][s];
+  return StepAttackBB[piece_of_color_and_type(c, PAWN)][s];
+}
+
+template<>
+inline Bitboard Position::piece_attacks<PAWN>(Square s) const {
+  return StepAttackBB[piece_of_color_and_type(opposite_color(sideToMove), PAWN)][s];
 }
 
 template<>
@@ -667,28 +675,28 @@ inline Phase Position::game_phase() const {
 inline bool Position::move_is_deep_pawn_push(Move m) const {
 
   Color c = side_to_move();
-  return   piece_on(move_from(m)) == pawn_of_color(c)
+  return   piece_on(move_from(m)) == piece_of_color_and_type(c, PAWN)
         && relative_rank(c, move_to(m)) > RANK_4;
 }
 
 inline bool Position::move_is_pawn_push_to_7th(Move m) const {
 
   Color c = side_to_move();
-  return   piece_on(move_from(m)) == pawn_of_color(c)
+  return   piece_on(move_from(m)) == piece_of_color_and_type(c, PAWN)
         && relative_rank(c, move_to(m)) == RANK_7;
 }
 
 inline bool Position::move_is_passed_pawn_push(Move m) const {
 
   Color c = side_to_move();
-  return   piece_on(move_from(m)) == pawn_of_color(c)
+  return   piece_on(move_from(m)) == piece_of_color_and_type(c, PAWN)
         && pawn_is_passed(c, move_to(m));
 }
 
 inline bool Position::move_was_passed_pawn_push(Move m) const {
 
   Color c = opposite_color(side_to_move());
-  return   piece_on(move_to(m)) == pawn_of_color(c)
+  return   piece_on(move_to(m)) == piece_of_color_and_type(c, PAWN)
         && pawn_is_passed(c, move_to(m));
 }