Fix exposure of square highlights

The exposure of highlighted squares assumed the line gap was 1 pixel,
and thus failed for wider grid lines.

diff --git a/board.c b/board.c
index 000af83..d89ff7d 100644 (file)
--- a/board.c
+++ b/board.c
@@ -749,7 +749,7 @@ DragPieceBegin (int x, int y, Boolean instantly)
        /* Mark this square as needing to be redrawn. Note that
           we don't remove the piece though, since logically (ie
           as seen by opponent) the move hasn't been made yet. */
-       damage[0][boardY][boardX] = True;
+       damage[0][boardY][boardX] |= True;
     } else {
        anims[Player].dragActive = False;
     }
@@ -770,7 +770,7 @@ DrawDragPiece ()
   DrawOneSquare(anims[Player].startSquare.x, anims[Player].startSquare.y,
                EmptySquare, anims[Player].startColor, 0, NULL, NULL, 0);
   AnimationFrame(Player, &anims[Player].prevFrame, anims[Player].dragPiece);
-  damage[0][anims[Player].startBoardY][anims[Player].startBoardX] = TRUE;
+  damage[0][anims[Player].startBoardY][anims[Player].startBoardX] |= TRUE;
 }
 
 static void
@@ -965,7 +965,7 @@ DrawPosition (int repaint, Board board)
                DrawSquare(i, j, board[i][j], 0);
                if(lineGap && damage[nr][i][j] & 2) {
                    drawHighlight(j, i, 0);
-                   SquareExpose(i, j, 1);
+                   SquareExpose(i, j, lineGap);
                } else SquareExpose(i, j, 0);
                damage[nr][i][j] = 0;
            }