Fix click-click sweep-select

If the up-click of the second click of a sweep-select would occur in the
from-square, the whole move would be ignored, and de-select the promoting
piece instead.

diff --git a/backend.c b/backend.c
index 4974fed..71a795c 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -7574,7 +7574,7 @@ printf("A type=%d\n",clickType);
        return;
     }
 
-    if (clickType == Release && x == fromX && y == fromY && killX < 0) {
+    if (clickType == Release && x == fromX && y == fromY && killX < 0 && !sweepSelecting) {
        DragPieceEnd(xPix, yPix); dragging = 0;
        if(clearFlag) {
            // a deferred attempt to click-click move an empty square on top of a piece
@@ -7588,10 +7588,9 @@ printf("A type=%d\n",clickType);
            /* Undo animation damage if any */
            DrawPosition(FALSE, NULL);
        }
-       if (second || sweepSelecting) {
+       if (second) {
            /* Second up/down in same square; just abort move */
-           if(sweepSelecting) DrawPosition(FALSE, boards[currentMove]);
-           second = sweepSelecting = 0;
+           second = 0;
            fromX = fromY = -1;
            gatingPiece = EmptySquare;
            MarkTargetSquares(1);