Let EditPosition double-click on piece promote it

[xboard.git] / backend.c

diff --git a/backend.c b/backend.c
index b05e795..9d659e2 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -6940,6 +6940,13 @@ UserMoveEvent(int fromX, int fromY, int toX, int toY, int promoChar)
            DrawPosition(FALSE, boards[currentMove]);
            return;
        } else if (toX >= 0 && toY >= 0) {
+           if(!appData.pieceMenu && toX == fromX && toY == fromY && boards[0][rf][ff] != EmptySquare) {
+               ChessSquare q, p = boards[0][rf][ff];
+               if(p >= BlackPawn) p = BLACK_TO_WHITE p;
+               if(CHUPROMOTED p < BlackPawn) p = q = CHUPROMOTED boards[0][rf][ff];
+               else p = CHUDEMOTED (q = boards[0][rf][ff]);
+               if(PieceToChar(q) == '+') gatingPiece = p;
+           }
            boards[0][toY][toX] = boards[0][fromY][fromX];
            if(fromX == BOARD_LEFT-2) { // handle 'moves' out of holdings
                if(boards[0][fromY][0] != EmptySquare) {