private IEnumerator AnimationRoutine(FrameData frameData, ITransition frameTransition, int indexOfTransition)
{
var oldElements = GetActiveElementsNotPresentInNewFrame(frameData).ToList();
_animations.Clear();
foreach (var element in oldElements)
{
var oldElementTransition = frameTransition;
if (element.Data.OverrideTransition != null)
{
oldElementTransition = element.Data.OverrideTransition[0];
}
_animations.Add(oldElementTransition.TransitionOldSceneObjectOut(element.SceneObject));
}
foreach (var element in frameData.Elements)
{
var alreadyPresentElement = _activeElements.FirstOrDefault(el => el.Data == element);
if (alreadyPresentElement != null)
{
alreadyPresentElement.SceneObject.transform.SetAsLastSibling();
}
else
{
var sceneObject = Instantiate(element.Prefab, Root);
var instance = new FrameElementInstance
{
SceneObject = sceneObject,
Data = element
};
_activeElements.Add(instance);
var elementTransition = frameTransition;
if (element.OverrideTransition != null)
{
elementTransition = element.OverrideTransition[indexOfTransition];
}
_animations.Add(elementTransition.TransitionNewSceneObjectIn(sceneObject));
}
}
foreach (var anim in _animations)
{
anim.OnStart();
}
var duration = frameTransition.GetTime();
if (duration > 0)
{
// Using enumerator for non-instant animations
var started = Time.time;
while (true)
{
var timeSinceStart = Time.time - started;
if (timeSinceStart > duration)
{
break;
}
var progress = 0f;
if (duration > 0)
{
progress = Mathf.Clamp01(timeSinceStart / duration);
}
foreach (var anim in _animations)
{
anim.OnUpdate(progress);
}
yield return(null);
}
}
else
{
// Instant animations complete in a single frame
foreach (var anim in _animations)
{
anim.OnUpdate(1f);
}
}
foreach (var anim in _animations)
{
anim.OnCompleted();
}
foreach (var element in oldElements)
{
Destroy(element.SceneObject);
element.Data = null;
}
_activeElements.RemoveAll(el => el.Data == null);
_activeFrameData = frameData;
_animations.Clear();
}