/*
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
////
#include "color.h"
-#include "misc.h"
#include "square.h"
+#include "value.h"
////
////
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
};
+ENABLE_OPERATORS_ON(PieceType);
+ENABLE_OPERATORS_ON(Piece);
+
////
//// Constants
////
-const PieceType PieceTypeMin = PAWN;
-const PieceType PieceTypeMax = KING;
+/// Important: If the material values are changed, one must also
+/// adjust the piece square tables, and the method game_phase() in the
+/// Position class!
+///
+/// Values modified by Joona Kiiski
-const int SlidingArray[18] = {
- 0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
-};
+const Value PawnValueMidgame = Value(0x0C6);
+const Value PawnValueEndgame = Value(0x102);
+const Value KnightValueMidgame = Value(0x331);
+const Value KnightValueEndgame = Value(0x34E);
+const Value BishopValueMidgame = Value(0x344);
+const Value BishopValueEndgame = Value(0x359);
+const Value RookValueMidgame = Value(0x4F6);
+const Value RookValueEndgame = Value(0x4FE);
+const Value QueenValueMidgame = Value(0x9D9);
+const Value QueenValueEndgame = Value(0x9FE);
-const SquareDelta Directions[16][16] = {
- {DELTA_ZERO},
- {DELTA_NW, DELTA_NE, DELTA_ZERO},
- {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
- DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
- {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_ZERO},
- {DELTA_ZERO},
- {DELTA_SW, DELTA_SE, DELTA_ZERO},
- {DELTA_SSW, DELTA_SSE, DELTA_SWW, DELTA_SEE,
- DELTA_NWW, DELTA_NEE, DELTA_NNW, DELTA_NNE, DELTA_ZERO},
- {DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
- {DELTA_S, DELTA_E, DELTA_W, DELTA_N,
- DELTA_SE, DELTA_SW, DELTA_NE, DELTA_NW, DELTA_ZERO},
-};
-
-const SquareDelta PawnPush[2] = {
- DELTA_N, DELTA_S
-};
+extern const Value PieceValueMidgame[17];
+extern const Value PieceValueEndgame[17];
+extern const int SlidingArray[18];
////
//// 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);
}
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 Piece king_of_color(Color c) {
- return piece_of_color_and_type(c, KING);
-}
-
inline int piece_is_slider(Piece p) {
- return SlidingArray[int(p)];
-}
-
-inline int piece_type_is_slider(PieceType pt) {
- return SlidingArray[int(pt)];
+ return SlidingArray[p];
}
inline SquareDelta pawn_push(Color c) {
- return PawnPush[c];
+ return (c == WHITE ? DELTA_N : DELTA_S);
}
inline bool piece_type_is_ok(PieceType pc) {
//// Prototypes
////
-extern int piece_type_to_char(PieceType pt, bool upcase = false);
+extern char piece_type_to_char(PieceType pt, bool upcase = false);
extern PieceType piece_type_from_char(char c);