private static IEnumerator StartFadeOut(CanvasGroup group, float fadeDuration, Action finishedCallback)
{
float startingAlpha = group.alpha;
float currentDuration = 0;
float startTime = Time.time;
while (currentDuration < fadeDuration) {
group.alpha = Mathf.Lerp(startingAlpha, 0, currentDuration / fadeDuration);
yield return 0;
currentDuration = Time.time - startTime;
}
group.SetVisible(false);
if (finishedCallback != null) {
finishedCallback();
}
}
