From: H.G.Muller <hgm@hgm-xboard.(none)>
Date: Sun, 5 Apr 2020 21:01:25 +0000 (+0200)
Subject: Prevent empty squares on holdings rank in Edit Position
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=cfb7f508c04a56b6c3c15acf1a1042908ec1394e;p=xboard.git

Prevent empty squares on holdings rank in Edit Position

When a piece is moved away from the gating rank in holdingless Seirawan,
the evacuated square is now automatically blacked out.
---

diff --git a/backend.c b/backend.c
index f49b273..aff8ada 100644
--- a/backend.c
+++ b/backend.c
@@ -7222,6 +7222,8 @@ UserMoveEvent (int fromX, int fromY, int toX, int toY, int promoChar)
 		    if(boards[0][fromY][BOARD_WIDTH-2]) boards[0][fromY][BOARD_WIDTH-2]--;
 		    if(boards[0][fromY][BOARD_WIDTH-2] == 0)  boards[0][fromY][BOARD_WIDTH-1] = EmptySquare;
 		}
+	    } else if(gameInfo.variant == VariantSChess && !gameInfo.holdingsSize && gatingPiece == EmptySquare && (fromY == 0 || fromY == BOARD_HEIGHT-1)) {
+		boards[0][fromY][fromX] = DarkSquare; // empty on gating rank -> dark
 	    } else
 	    boards[0][fromY][fromX] = gatingPiece;
 	    ClearHighlights();