Valil.Chess - Avalon 3D version

This is the alpha version of a Avalon based 3D interface for a chess game. You will need Visual Studio 2005 Beta 2 and WinFX SDK Beta 1 RC. Enjoy!

Mmm, nice board at least.

I had very nearly lost my first game when the opponent conveniently threw an exception. Other than that, it's a very impressive sample.

Anyway here the whole story:
System.InvalidOperationException: Nullable object must have a value.
   at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource)
   at System.Nullable`1.get_Value()
   at Valil.Chess.XAML3D.MainWindow.ProcessStartResults(HitTestResult result) in F:\Users\Administrator\Documents\Valil.Chess.XAML3D\MainWindow.xaml.cs:line 312
   at System.Windows.Media.Visual.HitTestPoint(HitTestFilter filterHitDelegate, HitTestResultDelegate resultHitDelegate, PointHitTestParameters pointParams)
   at System.Windows.Media.Visual.HitTestPoint(HitTestFilter filterHitDelegate, HitTestResultDelegate resultHitDelegate, PointHitTestParameters pointParams)
   at System.Windows.Media.Visual.HitTest(HitTestFilter filterHitDelegate, HitTestResultDelegate resultHitDelegate, HitTestParameters hitTestParameters)
   at System.Windows.Media.VisualOperations.HitTest(Visual reference, HitTestFilter filterHitDelegate, HitTestResultDelegate resultHitDelegate, HitTestParameters hitTestParameters)
   at Valil.Chess.XAML3D.MainWindow.buttonDownHandler(Object Sender, MouseButtonEventArgs e) in F:\Users\Administrator\Documents\Valil.Chess.XAML3D\MainWindow.xaml.cs:line 236
   at System.Windows.UIElement.RaiseMouseButtonEvent(EventPrivateKey key, MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseLeftButtonDown(MouseButtonEventArgs e)
   at System.Windows.Controls.Control.OnMouseLeftButtonDown(MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlers(Object source, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEventImpl(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter)

Yes, I have fixed the bug.
You can play online or you can download the latest version here:
http://www.valil.com/winfx/
It is build against WinFX Beta 1, it will not work with other older or newer versions.