Fix replay of multi-leg move

Replaying multi-leg moves made the moving piece reappear on the
from-square during continuation legs in WinBoard.

diff --git a/backend.c b/backend.c
index 9b81c39..3eea34d 100644 (file)
--- a/backend.c
+++ b/backend.c
@@ -12097,21 +12097,17 @@ AutoPlayOneMove ()
            SetHighlights(-1, -1, toX, toY);
        }
     } else {
-        int viaX = moveList[currentMove][5] - AAA;
-        int viaY = moveList[currentMove][6] - ONE;
         fromX = moveList[currentMove][0] - AAA;
         fromY = moveList[currentMove][1] - ONE;
 
         HistorySet(parseList, backwardMostMove, forwardMostMove, currentMove); /* [AS] */
 
         if(moveList[currentMove][4] == ';') { // multi-leg
-            ChessSquare piece = boards[currentMove][viaY][viaX];
-           AnimateMove(boards[currentMove], fromX, fromY, viaX, viaY);
-            boards[currentMove][viaY][viaX] = boards[currentMove][fromY][fromX];
-            AnimateMove(boards[currentMove], fromX=viaX, fromY=viaY, toX, toY);
-            boards[currentMove][viaY][viaX] = piece;
-        } else
+            killX = moveList[currentMove][5] - AAA;
+            killY = moveList[currentMove][6] - ONE;
+        }
        AnimateMove(boards[currentMove], fromX, fromY, toX, toY);
+       killX = killY = -1;
 
        if (appData.highlightLastMove) {
            SetHighlights(fromX, fromY, toX, toY);
@@ -15868,19 +15864,15 @@ ForwardInner (int target)
                SetHighlights(-1, -1, toX, toY);
            }
        } else {
-            int viaX = moveList[target - 1][5] - AAA;
-            int viaY = moveList[target - 1][6] - ONE;
             fromX = moveList[target - 1][0] - AAA;
             fromY = moveList[target - 1][1] - ONE;
            if (target == currentMove + 1) {
                if(moveList[target - 1][4] == ';') { // multi-leg
-                   ChessSquare piece = boards[currentMove][viaY][viaX];
-                   AnimateMove(boards[currentMove], fromX, fromY, viaX, viaY);
-                   boards[currentMove][viaY][viaX] = boards[currentMove][fromY][fromX];
-                   AnimateMove(boards[currentMove], viaX, viaY, toX, toY);
-                   boards[currentMove][viaY][viaX] = piece;
-               } else
+                   killX = moveList[target - 1][5] - AAA;
+                   killY = moveList[target - 1][6] - ONE;
+               }
                AnimateMove(boards[currentMove], fromX, fromY, toX, toY);
+               killX = killY = -1;
            }
            if (appData.highlightLastMove) {
                SetHighlights(fromX, fromY, toX, toY);