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Retire UCI_Chess960 option

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We don't need that !

We can infere from starting fen string if we are in
a Chess960 game or not. And note that this is a per-position
property, not an application wide one.

A nice trick is to use a custom manipulator (that is an
enum actually) to keep using the handy operator<<() on the
move when sending to std::cout, yes, I have indulged a
bit here ;-)

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2010-08-22 14:55:52 +01:00
parent 7b721b3663
commit e17fa64aec
8 changed files with 43 additions and 32 deletions
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src/position.cpp
+8 -8
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@@ -246,6 +246,10 @@ void Position::from_fen(const string& fen) {
castleRightsMask[make_square(initialQRFile, RANK_1)] ^= WHITE_OOO;
castleRightsMask[make_square(initialQRFile, RANK_8)] ^= BLACK_OOO;
isChess960 = initialKFile != FILE_E
|| initialQRFile != FILE_A
|| initialKRFile != FILE_H;
find_checkers();
st->key = compute_key();
@@ -352,21 +356,17 @@ const string Position::to_fen() const {
if (st->castleRights != CASTLES_NONE)
{
const bool Chess960 = initialKFile != FILE_E
|| initialQRFile != FILE_A
|| initialKRFile != FILE_H;
if (can_castle_kingside(WHITE))
fen += Chess960 ? char(toupper(file_to_char(initialKRFile))) : 'K';
fen += isChess960 ? char(toupper(file_to_char(initialKRFile))) : 'K';
if (can_castle_queenside(WHITE))
fen += Chess960 ? char(toupper(file_to_char(initialQRFile))) : 'Q';
fen += isChess960 ? char(toupper(file_to_char(initialQRFile))) : 'Q';
if (can_castle_kingside(BLACK))
fen += Chess960 ? file_to_char(initialKRFile) : 'k';
fen += isChess960 ? file_to_char(initialKRFile) : 'k';
if (can_castle_queenside(BLACK))
fen += Chess960 ? file_to_char(initialQRFile) : 'q';
fen += isChess960 ? file_to_char(initialQRFile) : 'q';
} else
fen += '-';