[Tweener] Instant tween

[Zeh Fernando]

> I'm pretty certain this has been asked already as it looks like a
> useful feature. I did take a look around but didn't quite find the
> answer though.
> 
> What I'd use is a quick function that takes the parameters of a
> tweening object, ignores all Tweener-specific ones (time, transition,
> _color, _bezier...) and instantly applies the values without having to
> go through all the needless Tweener code.
> 
> As far as I've peeked in the code Tweener already does this, however
> there are two disadvantages. The first is that I use private static
> const objects to store all the tweening parameters. If I want an
> instant tween I have to clone the objects via a quick bytearray
> function and set the time to zero - not so quick if you're doing it en
> masse. The second disadvantage is that I'm kind of strict about my
> code and using Tweener to _instantly_ change the parameters isn't
> immediately obvious.
> 

You could do it with .base:

mytween = {x:10, time:1, etc}

Tweener.addTween(myobj, {base:mytween, time:0});

With the second point - I agree. I don't think there's any better/simple 
way to do it though. Because Tweener has to go through some verification 
for the on* functions and whether it's an special property or not, it's 
not just a case of looping through the properties and applying them 
immediately.

In any case, Tweener kind of "understands" it's a immediate change if 
time is 0 so it bypasses some unnecessary code so other than the slight 
syntactical inadequacy, I don't think there's a lot of trouble created 
by using it. A separate function could be used to set the values (if you 
don't use any special property) in a much cleaner way though, but I bet 
that'd work better as part of your application.

Zeh