Author: Daniel Clausen
Date: 07:06:11 02/04/04
Go up one level in this thread
On February 04, 2004 at 09:46:08, Jeff GAZET wrote:
>hi,
>
>i'm new to this forum and i have a question about bitboards :
>To move a piece from square1 to square2, to know wchich bitboard to modify
>(white_knights, white_rooks...), do i have to look at the byte square into each
>bitboard to know which to modify ? Is there a simple way to do it ?
I'm not quite sure what you mean with "byte square into each bitboard", but I
try to answer anyhow. :)
A move in my case contains not only information about the from- and the
to-square, but also about the type of piece which moves. (and other things).
What I do is basically this:
makeWhiteMove(Board* b, Move mv)
{
[...]
switch(mv.pieceType)
{
case KNIGHT: update white_knights;
update white_pieces;
[...]
break;
case ROOK: update white_rooks;
update white_pieces;
[...]
break;
[...]
}
[...]
}
Alternativly, if your move type doesn't contain the piecetype information, you
have could look in the pieces[64] array of your board structure. If you also
don't have that, then you really have a problem, because then you have to check
all bitboards and see in which one the bit is set for your from-square.
HTH
Sargon
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