public virtual void Update(GameTime gameTime)
{
// Scale the button based on animation state
switch (animationState)
{
case ButtonAnimationState.Idle: break;
case ButtonAnimationState.Pressing:
scaleTimeElapsed += gameTime.ElapsedGameTime;
scale.X = (float)Tween.BounceEaseOut(scaleTimeElapsed.TotalMilliseconds, 1, -0.25, scaleDuration.TotalMilliseconds);
scale.Y = (float)Tween.BounceEaseOut(scaleTimeElapsed.TotalMilliseconds, 1, -0.25, scaleDuration.TotalMilliseconds);
if (scaleTimeElapsed >= scaleDuration)
{
animationState = ButtonAnimationState.Idle;
}
break;
case ButtonAnimationState.Releasing:
scaleTimeElapsed += gameTime.ElapsedGameTime;
scale.X = (float)Tween.BounceEaseOut(scaleTimeElapsed.TotalMilliseconds, 0.75, 0.25, scaleDuration.TotalMilliseconds);
scale.Y = (float)Tween.BounceEaseOut(scaleTimeElapsed.TotalMilliseconds, 0.75, 0.25, scaleDuration.TotalMilliseconds);
if (scaleTimeElapsed >= scaleDuration)
{
animationState = ButtonAnimationState.Idle;
}
break;
}
// Make the button pulse
scale.X += (float)Math.Cos(gameTime.TotalGameTime.TotalSeconds * 4) / 500;
scale.Y += (float)Math.Sin(gameTime.TotalGameTime.TotalSeconds * 4) / 500;
}