From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Fri, 4 Nov 2011 20:48:24 +0000 (+0100)
Subject: Change default sweep-promotion choicein queenless variants
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=43a9eda479942200b5918413599011b86420995e;p=xboard.git

Change default sweep-promotion choicein queenless variants

The initial scanning of the sweep piece until a defined piece is found
is now in the increasing direction (still starting at Queen), so that
the fairy pieces are suggested before R, B and N.
---

diff --git a/backend.c b/backend.c
index 8d16cf5..2f71b5e 100644
--- a/backend.c
+++ b/backend.c
@@ -5136,7 +5136,7 @@ Sweep(int step)
 	else if((int)promoSweep == -1) promoSweep = WhiteKing;
 	else if(promoSweep == BlackPawn && step < 0) promoSweep = WhitePawn;
 	else if(promoSweep == WhiteKing && step > 0) promoSweep = BlackKing;
-	if(!step) step = 1;
+	if(!step) step = -1;
     } while(PieceToChar(promoSweep) == '.' || PieceToChar(promoSweep) == '~' || promoSweep == pawn ||
 	    appData.testLegality && (promoSweep == king ||
 	    gameInfo.variant == VariantShogi && promoSweep != PROMOTED last && last != PROMOTED promoSweep && last != promoSweep));