public override Tweener MoveTo(float tweenPos)
{
if (Duration <= 0)
{
throw new Exception("Tweener.MoveTo failed: duration error");
}
if (Status != State.Active)
{
return(this);
}
if ((null != Validator) && !Validator())
{
StateTransition(State.Terminated);
return(this);
}
TweenPos = tweenPos;
FinishedLoops = Mathf.FloorToInt(TweenPos / Duration);
if (Loop > 0 && FinishedLoops >= Loop) // todo: consider about this
{
StateTransition(State.Complete);
}
var inLoopPos = TweenPos % Duration;
if (Status == State.Complete) // edge condition: 0 or Duration(max) ?
{
inLoopPos = Duration; // if the tween is completed, the tween pos should be the duration * loops
}
var posScale = inLoopPos / Duration;
if (
Direction == Directions.Backward ||
(Direction == Directions.PingPong && (FinishedLoops & 1) == 1)
)
{
posScale = 1 - posScale;
}
Setter(Evaluator.Evaluate(ValFrom, ValTo, Ease.Convert(posScale)));
return(this);
}