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