private static IEnumerator TweenAlphaRoutine(Sprite sprite, float from, float to, int duration, int delay,
OnTweenComplete onComplete,
Easing.Equation equation)
{
//TODO: remove this call to WaitForMilliSeconds and implement it in the while loop to prevent another instantiation of a yield
if (delay > 0)
{
yield return(new WaitForMilliSeconds(delay));
}
int time = 0;
sprite.alpha = from;
float fromDir = from > to ? from : 0;
float toDir = from > to ? 0 : from;
while (time < duration)
{
sprite.alpha = toDir + Easing.Ease(equation, time, fromDir, to - from, duration);
time += Time.deltaTime;
yield return(null);
}
sprite.alpha = to;
if (onComplete != null)
{
onComplete.Invoke(sprite);
}
}
public static void TweenAlpha(Sprite sprite, float from, float to, int duration,
OnTweenComplete onComplete = null, int delay = 0, Easing.Equation equation = Easing.Equation.QuadEaseOut)
{
if (_alphaRoutinesMap.ContainsKey(sprite))
{
CoroutineManager.StopCoroutine(_alphaRoutinesMap[sprite]);
_alphaRoutinesMap.Remove(sprite);
}
var ie = CoroutineManager.StartCoroutine(
TweenAlphaRoutine(sprite, from, to, duration, delay, onComplete, equation), null);
_alphaRoutinesMap.Add(sprite, ie);
}
public static void TweenScalePingPong(Sprite sprite, float from, float to, int duration,
OnTweenComplete onComplete = null, int delay = 0, Easing.Equation equation = Easing.Equation.QuadEaseOut)
{
if (sprite == null || sprite.Destroyed)
{
return;
}
SpriteTweener.TweenScale(sprite, from, to, duration, go =>
{
SpriteTweener.TweenScale(sprite, to, from, duration, go1 =>
{
TweenScalePingPong(sprite, from, to, duration, null, delay, equation);
});
});
}