[gnome-games] chess: Redraw board when move undone (Bug: #644178)

[Robert Ancell <rancell src gnome org>]

commit 9f29bb0ca945c9f355db639ddb74011d7837916f
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Mar 9 11:40:50 2011 +1100

    chess: Redraw board when move undone (Bug: #644178)

 glchess/src/chess-scene.vala |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/glchess/src/chess-scene.vala b/glchess/src/chess-scene.vala
index 7192215..7507b02 100644
--- a/glchess/src/chess-scene.vala
+++ b/glchess/src/chess-scene.vala
@@ -81,6 +81,7 @@ public class ChessScene : Object
             selected_rank = -1;
             selected_file = -1;
             _game.moved.connect (moved_cb);
+            _game.undo.connect (undo_cb);
             update_board ();
         }
     }
@@ -209,6 +210,11 @@ public class ChessScene : Object
     {
         update_board ();
     }
+
+    private void undo_cb (ChessGame game)
+    {
+        update_board ();
+    }
     
     private ChessModel? find_model (ChessPiece piece)
     {