| Author |
Message |
Matt Gokey (Mgokey)
| | Posted on Thursday, December 30, 2004 - 8:39 pm: | |
Is there a way to have certain patterns of piece types occupying a set of positions act as a single aggregate piece and move or be acted upon as a group? |
Karl Scherer (Karl)
| | Posted on Sunday, January 02, 2005 - 1:06 am: | |
I suppose the "cascade" command can help you there.
Example: you want to shift one step towards south a piece, and also the pieces to the top right
(northeast) and to the bottom left (southwest)
of it.
To achieve this, you code:
(define Movesouth ( ;move three diag. pieces
mark ;remember where you came from
from s to ;move this piece with your cursor
cascade back ne from s to ;move this one automatically
cascade sw from s to ;move this one also automatically
add
))
I suppose you can see how this method can be applied to all sorts of groups of pieces.
If you want to make sure all these pieces are pawns, you may code:
(define Movesouth ( ;move three diag. pieces
mark ;remember where you came from
from s to ;move this piece with your cursor
cascade back ne
(verify (piece? pawn))
from s to ;move this one automatically
cascade sw
(verify (piece? pawn))
from s to ;move this one also automatically
add
))
Cheers, Karl |
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