/*
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) 2008-2009 Marco Costalba
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"
//// Constants
////
-const PieceType PieceTypeMin = PAWN;
-const PieceType PieceTypeMax = KING;
-
const int SlidingArray[18] = {
0, 0, 0, 1, 2, 3, 0, 0, 0, 0, 0, 1, 2, 3, 0, 0, 0, 0
};
-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
-};
-
////
//// Inline functions
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)];
-}
-
inline SquareDelta pawn_push(Color c) {
- return PawnPush[c];
+ return (c == WHITE ? DELTA_N : DELTA_S);
}
inline bool piece_type_is_ok(PieceType pc) {