public void open(TransitionCallBack endCallback = null, float time = -1)
{
if (!isClosed || currentTarget == 0)
{
return;
}
if (time < 0)
{
time = this.time;
}
if (currentCoroutine != null)
{
StopCoroutine(currentCoroutine);
}
transitionEndCallback = endCallback;
StartCoroutine(FadeCanvasGroup(canvasElement, canvasElement.alpha, 0, time));
}
// Use this for initialization
public IEnumerator FadeCanvasGroup(CanvasGroup cg, float start, float end, float time = 0.5f)
{
float velocity = 0.05f;
transform.hideFlags = HideFlags.None;
cg.alpha = start;
currentTarget = end;
while (true)
{
time -= Time.smoothDeltaTime;
if (time <= 0)
{
cg.alpha = end;
break;
}
cg.alpha = Mathf.SmoothDamp(cg.alpha, end, ref velocity, time, Mathf.Infinity, Time.smoothDeltaTime);
yield return(new WaitForEndOfFrame());
}
if (cg.alpha <= 0)
{
transform.hideFlags = HideFlags.HideInHierarchy;
isClosed = false;
}
else
{
isClosed = true;
}
currentCoroutine = null;
currentTarget = -1;
if (transitionEndCallback != null)
{
transitionEndCallback();
}
transitionEndCallback = null;
}
/**
* @param cback : a callback function that determines if can transition</param>
* @param dest : a destination state for next transition</param>
*/
public StateTransition(TransitionCallBack cback, GameState dest)
{
callback = cback;
destinationState = dest;
}