2 Stockfish, a UCI chess playing engine derived from Glaurung 2.1
3 Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
4 Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
6 Stockfish is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 Stockfish is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #if !defined(PIECE_H_INCLUDED)
21 #define PIECE_H_INCLUDED
27 PAWN = 1, KNIGHT = 2, BISHOP = 3, ROOK = 4, QUEEN = 5, KING = 6
31 PIECE_NONE_DARK_SQ = 0, WP = 1, WN = 2, WB = 3, WR = 4, WQ = 5, WK = 6,
32 BP = 9, BN = 10, BB = 11, BR = 12, BQ = 13, BK = 14, PIECE_NONE = 16
36 WHITE, BLACK, COLOR_NONE
39 ENABLE_OPERATORS_ON(PieceType)
40 ENABLE_OPERATORS_ON(Piece)
41 ENABLE_OPERATORS_ON(Color)
43 /// Important: If the material values are changed, one must also
44 /// adjust the piece square tables, and the method game_phase() in the
47 /// Values modified by Joona Kiiski
49 const Value PawnValueMidgame = Value(0x0C6);
50 const Value PawnValueEndgame = Value(0x102);
51 const Value KnightValueMidgame = Value(0x331);
52 const Value KnightValueEndgame = Value(0x34E);
53 const Value BishopValueMidgame = Value(0x344);
54 const Value BishopValueEndgame = Value(0x359);
55 const Value RookValueMidgame = Value(0x4F6);
56 const Value RookValueEndgame = Value(0x4FE);
57 const Value QueenValueMidgame = Value(0x9D9);
58 const Value QueenValueEndgame = Value(0x9FE);
60 inline Piece make_piece(Color c, PieceType pt) {
61 return Piece((int(c) << 3) | int(pt));
64 inline PieceType type_of_piece(Piece p) {
65 return PieceType(int(p) & 7);
68 inline Color color_of_piece(Piece p) {
69 return Color(int(p) >> 3);
72 inline Color opposite_color(Color c) {
73 return Color(int(c) ^ 1);
76 inline bool color_is_ok(Color c) {
77 return c == WHITE || c == BLACK;
80 inline bool piece_type_is_ok(PieceType pt) {
81 return pt >= PAWN && pt <= KING;
84 inline bool piece_is_ok(Piece p) {
85 return piece_type_is_ok(type_of_piece(p)) && color_is_ok(color_of_piece(p));
88 inline char piece_type_to_char(PieceType pt) {
89 static const char ch[] = " PNBRQK";
93 #endif // !defined(PIECE_H_INCLUDED)