From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Tue, 2 Feb 2016 18:18:13 +0000 (+0100)
Subject: Fix aborted detour under-promotion XB
X-Git-Url: http://winboard.nl/cgi-bin?p=xboard.git;a=commitdiff_plain;h=6797bd9f6f43a4121ee3385a8571158c294a57d6

Fix aborted detour under-promotion XB

When a dragged Pawn was released before the promotion piece was fixed,
this would fake a release on the from-square. But the repair of animation
damage would take place on the to-square derived from the actual mouse
coordinates. When this was different from the from-square, the animation
damage (consisting of removalof the piece) would thus not be repaired
by redrawing that square, as normally (when the to-square is different)
it should remain empty. Now we mark the from-square as damaged when the
detour under-promotion changes the dragged piece.
---

diff --git a/board.c b/board.c
index 5916d45..e8111dd 100644
--- a/board.c
+++ b/board.c
@@ -670,6 +670,7 @@ ChangeDragPiece (ChessSquare piece)
 {
   anims[Player].dragPiece = piece;
   SetDragPiece(Player, piece);
+  damage[0][fromY][fromX] = True;
 }
 
 void