X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.h;h=a0a9a306b7aeaf95e52d4f1cd95141396298ade6;hp=5ff3d1ace8d3b908da4f39ff6c1247b58f7ccfde;hb=7e89a71624e07c735c2230dbbf2c7dbae864916e;hpb=9c7dc057d160d7f3c41553173f958f2cc7b5d98c

diff --git a/src/position.h b/src/position.h
index 5ff3d1ac..a0a9a306 100644
--- a/src/position.h
+++ b/src/position.h
@@ -96,18 +96,19 @@ public:
   template<PieceType Pt> int count() const;
   template<PieceType Pt> const Square* squares(Color c) const;
   template<PieceType Pt> Square square(Color c) const;
-  bool is_semiopen_file(Color c, File f) const;
+  bool is_on_semiopen_file(Color c, Square s) const;
 
   // Castling
   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;
+  bool can_castle(CastlingRights cr) const;
+  bool castling_impeded(CastlingRights cr) const;
+  Square castling_rook_square(CastlingRights cr) const;
 
   // Checking
   Bitboard checkers() const;
   Bitboard blockers_for_king(Color c) const;
   Bitboard check_squares(PieceType pt) const;
+  bool is_discovery_check_on_king(Color c, Move m) const;
 
   // Attacks to/from a given square
   Bitboard attackers_to(Square s) const;
@@ -263,11 +264,11 @@ inline Square Position::ep_square() const {
   return st->epSquare;
 }
 
-inline bool Position::is_semiopen_file(Color c, File f) const {
-  return !(pieces(c, PAWN) & file_bb(f));
+inline bool Position::is_on_semiopen_file(Color c, Square s) const {
+  return !(pieces(c, PAWN) & file_bb(s));
 }
 
-inline bool Position::can_castle(CastlingRight cr) const {
+inline bool Position::can_castle(CastlingRights cr) const {
   return st->castlingRights & cr;
 }
 
@@ -275,11 +276,11 @@ 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 {
+inline bool Position::castling_impeded(CastlingRights cr) const {
   return byTypeBB[ALL_PIECES] & castlingPath[cr];
 }
 
-inline Square Position::castling_rook_square(CastlingRight cr) const {
+inline Square Position::castling_rook_square(CastlingRights cr) const {
   return castlingRookSquare[cr];
 }
 
@@ -316,6 +317,10 @@ inline Bitboard Position::check_squares(PieceType pt) const {
   return st->checkSquares[pt];
 }
 
+inline bool Position::is_discovery_check_on_king(Color c, Move m) const {
+  return st->blockersForKing[c] & from_sq(m);
+}
+
 inline bool Position::pawn_passed(Color c, Square s) const {
   return !(pieces(~c, PAWN) & passed_pawn_span(c, s));
 }