public BackAndForth(Vector2 initialPosition, Vector2 finalPosition, double lengthPerMovementInMilliseconds)
: base(Constants.ViewEffectInfiniteLength)
{
LengthPerMovementInMilliseconds = lengthPerMovementInMilliseconds;
InitialPosition = initialPosition;
FinalPosition = finalPosition;
InnerTranslateToEffect = new TranslateTo (InitialPosition, FinalPosition, LengthPerMovementInMilliseconds);
}
protected override void UpdateEffect(GameTime gameTime, View view)
{
InnerTranslateToEffect.Update (gameTime, view);
if (InnerTranslateToEffect.IsComplete ()) {
if (IsMovingForth) {
InnerTranslateToEffect = new TranslateTo (FinalPosition, InitialPosition, LengthPerMovementInMilliseconds);
} else {
InnerTranslateToEffect = new TranslateTo (InitialPosition, FinalPosition, LengthPerMovementInMilliseconds);
}
IsMovingForth = !IsMovingForth;
}
}
public virtual void Show()
{
PlayTransitionAudio ();
Overlay.Appear ();
Effects.TranslateTo translateToShownPosition = new Effects.TranslateTo (Position, ShowingPosition, TransitionMilliseconds);
translateToShownPosition.OnComplete = HandleTranslatedtoShownPosition;
StartEffect (translateToShownPosition);
Visible = true;
}
public virtual void Hide()
{
PlayTransitionAudio ();
Overlay.Disappear ();
Effects.TranslateTo translateToHiddenPosition = new Effects.TranslateTo (Position, HiddenPosition, TransitionMilliseconds);
translateToHiddenPosition.OnComplete = HandleTranslatedtoHiddenPosition;
StartEffect (translateToHiddenPosition);
}