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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 99 | pmbaty | 1 | /* |
| 2 | Texel - A UCI chess engine. |
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| 3 | Copyright (C) 2012-2013 Peter Österlund, peterosterlund2@gmail.com |
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| 4 | |||
| 5 | This program is free software: you can redistribute it and/or modify |
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| 6 | it under the terms of the GNU General Public License as published by |
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| 7 | the Free Software Foundation, either version 3 of the License, or |
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| 8 | (at your option) any later version. |
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| 9 | |||
| 10 | This program is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
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| 17 | */ |
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| 18 | |||
| 19 | /* |
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| 20 | * piece.hpp |
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| 21 | * |
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| 22 | * Created on: Feb 25, 2012 |
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| 23 | * Author: petero |
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| 24 | */ |
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| 25 | |||
| 26 | #ifndef PIECE_HPP_ |
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| 27 | #define PIECE_HPP_ |
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| 28 | |||
| 29 | /** |
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| 30 | * Constants for different piece types. |
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| 31 | */ |
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| 32 | class Piece { |
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| 33 | public: |
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| 34 | enum Type { |
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| 35 | EMPTY = 0, |
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| 36 | WKING = 1, |
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| 37 | WQUEEN = 2, |
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| 38 | WROOK = 3, |
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| 39 | WBISHOP = 4, |
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| 40 | WKNIGHT = 5, |
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| 41 | WPAWN = 6, |
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| 42 | |||
| 43 | BKING = 7, |
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| 44 | BQUEEN = 8, |
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| 45 | BROOK = 9, |
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| 46 | BBISHOP = 10, |
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| 47 | BKNIGHT = 11, |
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| 48 | BPAWN = 12, |
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| 49 | |||
| 50 | nPieceTypes = 13 |
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| 51 | }; |
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| 52 | |||
| 53 | /** |
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| 54 | * Return true if p is a white piece, false otherwise. |
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| 55 | * Note that if p is EMPTY, an unspecified value is returned. |
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| 56 | */ |
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| 57 | static bool isWhite(int pType); |
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| 58 | |||
| 59 | static int makeWhite(int pType); |
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| 60 | |||
| 61 | static int makeBlack(int pType); |
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| 62 | }; |
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| 63 | |||
| 64 | template <bool wtm> struct ColorTraits { |
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| 65 | }; |
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| 66 | |||
| 67 | template<> struct ColorTraits<true> { |
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| 68 | static const Piece::Type KING = Piece::WKING; |
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| 69 | static const Piece::Type QUEEN = Piece::WQUEEN; |
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| 70 | static const Piece::Type ROOK = Piece::WROOK; |
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| 71 | static const Piece::Type BISHOP = Piece::WBISHOP; |
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| 72 | static const Piece::Type KNIGHT = Piece::WKNIGHT; |
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| 73 | static const Piece::Type PAWN = Piece::WPAWN; |
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| 74 | }; |
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| 75 | |||
| 76 | template<> struct ColorTraits<false> { |
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| 77 | static const Piece::Type KING = Piece::BKING; |
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| 78 | static const Piece::Type QUEEN = Piece::BQUEEN; |
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| 79 | static const Piece::Type ROOK = Piece::BROOK; |
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| 80 | static const Piece::Type BISHOP = Piece::BBISHOP; |
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| 81 | static const Piece::Type KNIGHT = Piece::BKNIGHT; |
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| 82 | static const Piece::Type PAWN = Piece::BPAWN; |
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| 83 | }; |
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| 84 | |||
| 85 | inline bool |
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| 86 | Piece::isWhite(int pType) { |
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| 87 | return pType < BKING; |
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| 88 | } |
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| 89 | |||
| 90 | inline int |
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| 91 | Piece::makeWhite(int pType) { |
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| 92 | return pType < BKING ? pType : pType - (BKING - WKING); |
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| 93 | } |
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| 94 | |||
| 95 | inline int |
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| 96 | Piece::makeBlack(int pType) { |
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| 97 | return ((pType > EMPTY) && (pType < BKING)) ? pType + (BKING - WKING) : pType; |
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| 98 | } |
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| 99 | |||
| 100 | #endif /* PIECE_HPP_ */ |