Small touches in FEN decoding

[stockfish] / src / position.h

diff --git a/src/position.h b/src/position.h
index 0939e7504ea457352eecb46fd362789747b9bf5a..f09d629f4e829f967558ad810f737d8fdf1d30a3 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -37,6 +37,7 @@ struct CheckInfo {
   Bitboard dcCandidates;
   Bitboard pinned;
   Bitboard checkSq[8];
+  Square ksq;
 };
 
 
@@ -100,6 +101,7 @@ public:
 
   // The piece on a given square
   Piece piece_on(Square s) const;
+  Piece piece_moved(Move m) const;
   bool square_is_empty(Square s) const;
 
   // Side to move
@@ -183,14 +185,9 @@ public:
   Value non_pawn_material(Color c) const;
   Score pst_delta(Piece piece, Square from, Square to) const;
 
-  // Game termination checks
-  bool is_mate() const;
+  // Other properties of the position
   template<bool SkipRepetition> bool is_draw() const;
-
-  // Plies from start position to the beginning of search
   int startpos_ply_counter() const;
-
-  // Other properties of the position
   bool opposite_colored_bishops() const;
   bool has_pawn_on_7th(Color c) const;
   bool is_chess960() const;
@@ -213,7 +210,7 @@ private:
   // Initialization helper functions (used while setting up a position)
   void clear();
   void put_piece(Piece p, Square s);
-  void set_castle_right(Square ksq, Square rsq);
+  void set_castle_right(Color c, Square rsq);
   bool move_is_legal(const Move m) const;
 
   // Helper template functions
@@ -277,6 +274,10 @@ inline Piece Position::piece_on(Square s) const {
   return board[s];
 }
 
+inline Piece Position::piece_moved(Move m) const {
+  return board[from_sq(m)];
+}
+
 inline bool Position::square_is_empty(Square s) const {
   return board[s] == NO_PIECE;
 }
@@ -428,8 +429,8 @@ inline Value Position::non_pawn_material(Color c) const {
 
 inline bool Position::is_passed_pawn_push(Move m) const {
 
-  return   board[move_from(m)] == make_piece(sideToMove, PAWN)
-        && pawn_is_passed(sideToMove, move_to(m));
+  return   board[from_sq(m)] == make_piece(sideToMove, PAWN)
+        && pawn_is_passed(sideToMove, to_sq(m));
 }
 
 inline int Position::startpos_ply_counter() const {
@@ -454,14 +455,14 @@ inline bool Position::is_chess960() const {
 inline bool Position::is_capture_or_promotion(Move m) const {
 
   assert(is_ok(m));
-  return is_special(m) ? !is_castle(m) : !square_is_empty(move_to(m));
+  return is_special(m) ? !is_castle(m) : !square_is_empty(to_sq(m));
 }
 
 inline bool Position::is_capture(Move m) const {
 
   // Note that castle is coded as "king captures the rook"
   assert(is_ok(m));
-  return (!square_is_empty(move_to(m)) && !is_castle(m)) || is_enpassant(m);
+  return (!square_is_empty(to_sq(m)) && !is_castle(m)) || is_enpassant(m);
 }
 
 inline PieceType Position::captured_piece_type() const {