Implement 3-leg animation in WinBoard

Move animation in WinBoard now also pays attention to the kill2 square.
Besides a bug was fixed that made the animated piece re-appear on the
from-square during the second leg, and the victimes are made to disappear
when the animated piece passes over them.

diff --git a/winboard/winboard.c b/winboard/winboard.c
index c6a443e..89cb828 100644 (file)
--- a/winboard/winboard.c
+++ b/winboard/winboard.c
@@ -3754,6 +3754,7 @@ void DrawSeekClose()
 }\r
 \r
 \r
+\r
 VOID\r
 HDCDrawPosition(HDC hdc, BOOLEAN repaint, Board board)\r
 {\r
@@ -3974,6 +3975,7 @@ HDCDrawPosition(HDC hdc, BOOLEAN repaint, Board board)
         explodes.  The old and new positions both had an empty square\r
         at the destination, but animation has drawn a piece there and\r
         we have to remember to erase it. [HGM] moved until after setting lastDrawn */\r
+\r
       lastDrawn[0][animInfo.to.y][animInfo.to.x] = animInfo.piece;\r
     }\r
   }\r
@@ -9137,6 +9139,7 @@ IDLE_PRIORITY_CLASS         0x00000040
 */\r
         if (nice < -15) return 0x00000080;\r
         if (nice < 0)   return 0x00008000;\r
+\r
         if (nice == 0)  return 0x00000020;\r
         if (nice < 15)  return 0x00004000;\r
         return 0x00000040;\r
@@ -10047,8 +10050,8 @@ AnimateMove(board, fromX, fromY, toX, toY)
      int toX;\r
      int toY;\r
 {\r
-  ChessSquare piece;\r
-  int x = toX, y = toY;\r
+  ChessSquare piece, victim = EmptySquare, victim2 = EmptySquare;\r
+  int x = toX, y = toY, x2 = kill2X;\r
   POINT start, finish, mid;\r
   POINT frames[kFactor * 2 + 1];\r
   int nFrames, n;\r
@@ -10061,7 +10064,11 @@ AnimateMove(board, fromX, fromY, toX, toY)
   piece = board[fromY][fromX];\r
   if (piece >= EmptySquare) return;\r
 \r
-  if(killX >= 0) toX = killX, toY = killY; // [HGM] lion: first to kill square\r
+  if(x2 >= 0) toX = kill2X, toY = kill2Y,  victim = board[killY][killX], victim2 = board[kill2Y][kill2X]; else\r
+  if(killX >= 0) toX = killX, toY = killY, victim = board[killY][killX]; // [HGM] lion: first to kill square\r
+\r
+  animInfo.from.x = fromX;\r
+  animInfo.from.y = fromY;\r
 \r
 again:\r
 \r
@@ -10089,8 +10096,6 @@ again:
   else\r
     Tween(&start, &mid, &finish, kFactor, frames, &nFrames);\r
 \r
-  animInfo.from.x = fromX;\r
-  animInfo.from.y = fromY;\r
   animInfo.to.x = toX;\r
   animInfo.to.y = toY;\r
   animInfo.lastpos = start;\r
@@ -10104,7 +10109,17 @@ again:
   animInfo.pos = finish;\r
   DrawPosition(FALSE, NULL);\r
 \r
-  if(toX != x || toY != y) { fromX = toX; fromY = toY; toX = x; toY = y; goto again; } // second leg\r
+  if(toX == x2 && toY == kill2Y) {\r
+    fromX = toX; fromY = toY; toX = killX; toY = killY; x2 = -1;\r
+    board[kill2Y][kill2X] = EmptySquare; goto again;\r
+  } // second leg\r
+  if(toX != x || toY != y) {\r
+    fromX = toX; fromY = toY; toX = x; toY = y;\r
+    board[killY][killX] = EmptySquare; goto again;\r
+  } // second leg\r
+\r
+if(victim2 != EmptySquare) board[kill2Y][kill2X] = victim2;\r
+if(victim  != EmptySquare) board[killY][killX] = victim;\r
 \r
   animInfo.piece = EmptySquare;\r
   Explode(board, fromX, fromY, toX, toY);\r