public MainPage()
{
InitializeComponent();
_invadersViewModel = FindResource(nameof(InvadersViewModel)) as InvadersViewModel;
InvadersHelper.BringToFront(GameOverText);
InvadersHelper.BringToFront(PausedText);
}
public void StartAnimation(IEnumerable <string> imageNames, TimeSpan interval)
{
Storyboard storyboard = new Storyboard();
ObjectAnimationUsingKeyFrames animation = new ObjectAnimationUsingKeyFrames();
Storyboard.SetTarget(animation, image);
Storyboard.SetTargetProperty(animation, "Source");
TimeSpan currentInteval = TimeSpan.FromMilliseconds(0);
foreach (string imageName in imageNames)
{
ObjectKeyFrame keyFrame = new DiscreteObjectKeyFrame();
keyFrame.Value = InvadersHelper.CreateImageFromAssets(imageName);
keyFrame.KeyTime = currentInteval;
animation.KeyFrames.Add(keyFrame);
currentInteval = currentInteval.Add(interval);
}
storyboard.RepeatBehavior = RepeatBehavior.Forever;
storyboard.AutoReverse = true;
storyboard.Children.Add(animation);
storyboard.Begin();
}