Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
- Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+ Copyright (C) 2015-2020 Marco Costalba, Joona Kiiski, Gary Linscott, 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
constexpr Color Them = (Us == WHITE ? BLACK : WHITE);
constexpr Bitboard TRank7BB = (Us == WHITE ? Rank7BB : Rank2BB);
constexpr Bitboard TRank3BB = (Us == WHITE ? Rank3BB : Rank6BB);
- constexpr Direction Up = (Us == WHITE ? NORTH : SOUTH);
+ constexpr Direction Up = pawn_push(Us);
constexpr Direction UpRight = (Us == WHITE ? NORTH_EAST : SOUTH_WEST);
constexpr Direction UpLeft = (Us == WHITE ? NORTH_WEST : SOUTH_EAST);
+ const Square ksq = pos.square<KING>(Them);
Bitboard emptySquares;
Bitboard pawnsOn7 = pos.pieces(Us, PAWN) & TRank7BB;
if (Type == QUIET_CHECKS)
{
- Square ksq = pos.square<KING>(Them);
-
b1 &= pos.attacks_from<PAWN>(ksq, Them);
b2 &= pos.attacks_from<PAWN>(ksq, Them);
Bitboard b2 = shift<UpLeft >(pawnsOn7) & enemies;
Bitboard b3 = shift<Up >(pawnsOn7) & emptySquares;
- Square ksq = pos.square<KING>(Them);
-
while (b1)
moveList = make_promotions<Type, UpRight>(moveList, pop_lsb(&b1), ksq);
ExtMove* generate_moves(const Position& pos, ExtMove* moveList, Color us,
Bitboard target) {
- assert(Pt != KING && Pt != PAWN);
+ static_assert(Pt != KING && Pt != PAWN, "Unsupported piece type in generate_moves()");
const Square* pl = pos.squares<Pt>(us);
template<Color Us, GenType Type>
ExtMove* generate_all(const Position& pos, ExtMove* moveList, Bitboard target) {
- constexpr CastlingRight OO = Us | KING_SIDE;
- constexpr CastlingRight OOO = Us | QUEEN_SIDE;
+ constexpr CastlingRights OO = Us & KING_SIDE;
+ constexpr CastlingRights OOO = Us & QUEEN_SIDE;
constexpr bool Checks = Type == QUIET_CHECKS; // Reduce template instantations
moveList = generate_pawn_moves<Us, Type>(pos, moveList, target);
while (b)
*moveList++ = make_move(ksq, pop_lsb(&b));
- if (Type != CAPTURES && pos.can_castle(CastlingRight(OO | OOO)))
+ if (Type != CAPTURES && pos.can_castle(CastlingRights(OO | OOO)))
{
if (!pos.castling_impeded(OO) && pos.can_castle(OO))
*moveList++ = make<CASTLING>(ksq, pos.castling_rook_square(OO));
template<GenType Type>
ExtMove* generate(const Position& pos, ExtMove* moveList) {
- assert(Type == CAPTURES || Type == QUIETS || Type == NON_EVASIONS);
+ static_assert(Type == CAPTURES || Type == QUIETS || Type == NON_EVASIONS, "Unsupported type in generate()");
assert(!pos.checkers());
Color us = pos.side_to_move();