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make_move now handles castling

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Karma Riuk 2025-02-02 23:34:10 +01:00
parent a7cf8e0c21
commit f0467bc516
1 changed files with 18 additions and 0 deletions
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18
cpp/src/board.cpp
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@ -199,6 +199,24 @@ Board Board::make_move(Move move) const {
} else {
ret.en_passant_target = -1;
}
// -- Handle castling (just move the rook over)
if (move.castle_side & KingSide) {
Coords c = Coords::from_index(move.source_square);
Coords rook_source{7, c.y};
int8_t old_rook = ret.squares[rook_source.to_index()];
ret.squares[rook_source.to_index()] = Piece::None;
Coords rook_dest{5, c.y};
ret.squares[rook_dest.to_index()] = old_rook;
} else if (move.castle_side & QueenSide) {
Coords c = Coords::from_index(move.source_square);
Coords rook_source{0, c.y};
int8_t old_rook = ret.squares[rook_source.to_index()];
ret.squares[rook_source.to_index()] = Piece::None;
Coords rook_dest{3, c.y};
ret.squares[rook_dest.to_index()] = old_rook;
}
return ret;
}