/// <summary>
/// Starts the transition.
/// </summary>
public void Start()
{
if (_isStarted)
{
return;
}
_isStarted = true;
// Transition not required
if (_elementA == null && _elementB == null)
{
OnHide.InvokeIfNotNull();
OnComplete.InvokeIfNotNull();
return;
}
// Nothing to show
if (_elementA != null && _elementB == null)
{
ElementAHide();
return;
}
// Nothing to hide
if (_elementA == null && _elementB != null)
{
ElementBShow();
return;
}
float hideDuration = _elementA.GetAnimationHideDuration();
if (_offsetTime <= 0 || hideDuration <= 0)
{
ElementAHideWithoutCallback();
ElementBShow();
}
else if (_offsetTime >= 1)
{
ElementAHide();
}
else
{
ElementAHideWithoutCallback();
new DeferredAction
(
ElementBShow,
hideDuration * _offsetTime,
DeferredType.TimeBased
);
}
}
// ElementA hide completed
private void ElementAHideCompleted()
{
OnHide.InvokeIfNotNull();
_elementA.OnHide -= ElementAHideCompleted;
if (_elementB == null)
{
OnComplete.InvokeIfNotNull();
}
else
{
ElementBShow();
}
}
/// <summary>
/// Performed when Hide processes completed.
/// In inherited classes always use base.HideEnd() when overriding this method.
/// </summary>
protected virtual void HideEnd()
{
OnHide.InvokeIfNotNull();
SetActive(false);
}
// ElementA hide completed
private void ElementAHideWithoutCallbackCompleted()
{
OnHide.InvokeIfNotNull();
_elementA.OnHide -= ElementAHideWithoutCallbackCompleted;
}
