Use templetized operations for Piece

[stockfish] / src / piece.h

diff --git a/src/piece.h b/src/piece.h
index 5b66949901dbbf185d8930a472ee7efa01815a4d..40a01e1005401ee7c807c22746484f77945b52ad 100644 (file)
--- a/src/piece.h
+++ b/src/piece.h
@@ -1,18 +1,18 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
-  Copyright (C) 2008 Marco Costalba
+  Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
-  
+
   Stockfish is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
-  
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
@@ -21,56 +21,42 @@
 #if !defined(PIECE_H_INCLUDED)
 #define PIECE_H_INCLUDED
 
-//// 
+////
 //// Includes
 ////
 
 #include "color.h"
-#include "misc.h"
 #include "square.h"
 
 
-//// 
+////
 //// Types
 ////
 
 enum PieceType {
-  NO_PIECE_TYPE = 0,
+  PIECE_TYPE_NONE = 0,
   PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6
 };
 
 enum Piece {
-  NO_PIECE = 0, WP = 1, WN = 2, WB = 3, WR = 4, WQ = 5, WK = 6,
-  BP = 9, BN = 10, BB = 11, BR = 12, BQ = 13, BK = 14,
-  EMPTY = 16, OUTSIDE = 17
+  PIECE_NONE_DARK_SQ = 0, WP = 1, WN = 2, WB = 3, WR = 4, WQ = 5, WK = 6,
+  BP = 9, BN = 10, BB = 11, BR = 12, BQ = 13, BK = 14, PIECE_NONE = 16
 };
 
 
 ////
-//// Constants and variables
+//// Constants
 ////
 
-const PieceType PieceTypeMin = PAWN;
-const PieceType PieceTypeMax = KING;
-
-extern const int SlidingArray[18];
-extern const SquareDelta Directions[16][16];   
-extern const SquareDelta PawnPush[2];
+const int SlidingArray[18] = {
+  0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
+};
 
 
-//// 
+////
 //// Inline functions
 ////
 
-inline Piece operator+ (Piece p, int i) { return Piece(int(p) + i); }
-inline void operator++ (Piece &p, int) { p = Piece(int(p) + 1); }
-inline Piece operator- (Piece p, int i) { return Piece(int(p) - i); }
-inline void operator-- (Piece &p, int) { p = Piece(int(p) - 1); }
-inline PieceType operator+ (PieceType p, int i) {return PieceType(int(p) + i);}
-inline void operator++ (PieceType &p, int) { p = PieceType(int(p) + 1); }
-inline PieceType operator- (PieceType p, int i) {return PieceType(int(p) - i);}
-inline void operator-- (PieceType &p, int) { p = PieceType(int(p) - 1); }
-
 inline PieceType type_of_piece(Piece p)  {
   return PieceType(int(p) & 7);
 }
@@ -83,51 +69,29 @@ inline Piece piece_of_color_and_type(Color c, PieceType pt) {
   return Piece((int(c) << 3) | int(pt));
 }
 
-inline Piece pawn_of_color(Color c) {
-  return piece_of_color_and_type(c, PAWN);
-}
-
-inline Piece knight_of_color(Color c) {
-  return piece_of_color_and_type(c, KNIGHT);
-}
-
-inline Piece bishop_of_color(Color c) {
-  return piece_of_color_and_type(c, BISHOP);
-}
-
-inline Piece rook_of_color(Color c) {
-  return piece_of_color_and_type(c, ROOK);
-}
-
-inline Piece queen_of_color(Color c) {
-  return piece_of_color_and_type(c, QUEEN);
+inline int piece_is_slider(Piece p) {
+  return SlidingArray[int(p)];
 }
 
-inline Piece king_of_color(Color c) {
-  return piece_of_color_and_type(c, KING);
+inline SquareDelta pawn_push(Color c) {
+    return (c == WHITE ? DELTA_N : DELTA_S);
 }
 
-inline int piece_is_slider(Piece p) {
-  return SlidingArray[int(p)];
+inline bool piece_type_is_ok(PieceType pc) {
+  return pc >= PAWN && pc <= KING;
 }
 
-inline int piece_type_is_slider(PieceType pt) {
-  return SlidingArray[int(pt)];
+inline bool piece_is_ok(Piece pc) {
+  return piece_type_is_ok(type_of_piece(pc)) && color_is_ok(color_of_piece(pc));
 }
 
-inline SquareDelta pawn_push(Color c) {
-  return PawnPush[c];
-}
-  
 
 ////
 //// Prototypes
 ////
 
-extern char piece_type_to_char(PieceType pt, bool upcase);
+extern char piece_type_to_char(PieceType pt, bool upcase = false);
 extern PieceType piece_type_from_char(char c);
-extern bool piece_is_ok(Piece pc);
-extern bool piece_type_is_ok(PieceType pt);
 
 
 #endif // !defined(PIECE_H_INCLUDED)