X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fposition.h;h=9976eacb21826dafd57eed8d372fa22436e079c3;hp=be43c2e41e2bf13c2926f2a163f54725726f9cae;hb=d6904157aab50f7b2a53843f681b232247e866e2;hpb=35782079749c8f16560a13b9740d1a76654c6fe2

diff --git a/src/position.h b/src/position.h
index be43c2e4..9976eacb 100644
--- a/src/position.h
+++ b/src/position.h
@@ -51,7 +51,7 @@
 ////
 
 /// FEN string for the initial position
-const std::string StartPosition = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
+const std::string StartPositionFEN = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
 
 /// Maximum number of plies per game (220 should be enough, because the
 /// maximum search depth is 100, and during position setup we reset the
@@ -270,6 +270,8 @@ public:
   // Number of plies since the last non-reversible move
   int rule_50_counter() const;
 
+  int startpos_ply_counter() const;
+
   // Other properties of the position
   bool opposite_colored_bishops() const;
   bool has_pawn_on_7th(Color c) const;
@@ -280,6 +282,8 @@ public:
   // Reset the gamePly variable to 0
   void reset_game_ply();
 
+  void inc_startpos_ply_counter();
+
   // Position consistency check, for debugging
   bool is_ok(int* failedStep = NULL) const;
 
@@ -294,6 +298,7 @@ private:
   void put_piece(Piece p, Square s);
   void allow_oo(Color c);
   void allow_ooo(Color c);
+  bool set_castling_rights(char token);
 
   // Helper functions for doing and undoing moves
   void do_capture_move(Key& key, PieceType capture, Color them, Square to, bool ep);
@@ -333,6 +338,7 @@ private:
   int castleRightsMask[64];
   StateInfo startState;
   File initialKFile, initialKRFile, initialQRFile;
+  int startPosPlyCounter;
   int threadID;
   StateInfo* st;
 
@@ -363,7 +369,7 @@ inline PieceType Position::type_of_piece_on(Square s) const {
 }
 
 inline bool Position::square_is_empty(Square s) const {
-  return piece_on(s) == EMPTY;
+  return piece_on(s) == NO_PIECE;
 }
 
 inline bool Position::square_is_occupied(Square s) const {
@@ -535,11 +541,16 @@ inline int Position::rule_50_counter() const {
   return st->rule50;
 }
 
+inline int Position::startpos_ply_counter() const {
+
+  return startPosPlyCounter;
+}
+
 inline bool Position::opposite_colored_bishops() const {
 
   return   piece_count(WHITE, BISHOP) == 1
         && piece_count(BLACK, BISHOP) == 1
-        && square_color(piece_list(WHITE, BISHOP, 0)) != square_color(piece_list(BLACK, BISHOP, 0));
+        && !same_color_squares(piece_list(WHITE, BISHOP, 0), piece_list(BLACK, BISHOP, 0));
 }
 
 inline bool Position::has_pawn_on_7th(Color c) const {