[Golist] This looks a bit better as far as syntax

[Moses Gunesch]

Yeah that's good. I created a system called OpenTween – don't think I  
ever posted it though because I wasn't sure I liked the abstraction  
layer of putting a ton of information and functionality into property  
classes which is what happened when I tried this.

My property inputs were
   propName: String,
   endVal: *=null,
   endValRelative: Boolean=false,
   startVal: *=null,
   startValRelative: Boolean=false

Then I had this functionality in there from Fuse, that lets you omit  
either start or end and it will figure it out. That's probably why it  
got complicated.  (I will share OpenTween if you want.)

Anyway yeah I think there is something to a multi-property approach  
for sure, but I've been leaning back toward just extending LinearGo in  
the simplest way possible – one property per tween class.

Here is why: if every single property were in a separate tween class,  
OverlapMonitor works the best in that it can allow just one property  
to be paused, stopped and so on. That's how ZigoEngine worked, it  
atomized every tween internally. I've been thinking PlayableGroup  
could be extended to handle multi-prop tweens by creating separate  
tween instances, then it could let you drill into them to grab  
children by property etc.

One could argue that it's slower to not block all similar tweens, but  
it also provides more control and is less abstract, and I've found  
that in real practice there are usually only a very small number of  
"blocked" tweens at once... pretty soon you want to change delay/ 
duration/easing on one property or another and you end up with a group  
anyway.

That said, I'd love to see your concept taken all the way John...!

:-)


On May 6, 2008, at 3:54 PM, John Grden wrote:

> Was this:
> tween_0 = new Tween3D(target, 1, Equations.easeOutCubic);
> tween_0.x = 0;
> tween_0.y = 50;
> tween_0.rotationZ = 0;
> sequence.addStep(tween_0);
>
> sequence.lastStep.advance = new OnDurationComplete(.2); // advance  
> early/overlap
> tween_0b = new Tween3D(target, 1, Equations.easeOutCubic);
> tween_0b.z = 200;
> sequence.addStep(tween_0b, true); // 2nd param groups it with  
> previous step. param is "addToLastStep"
>
> tween_1 = new Tween3D(target, 1, Equations.easeOutCubic);
> tween_1.x = -10;
> tween_1.y = 85;
> tween_1.rotationZ = 15;
> sequence.addStep(tween_1);
> sequence.lastStep.advance = new OnDurationComplete(.25); // advance  
> early/overlap
>
> tween_2 = new Tween3D(target, 1, Equations.easeOutBounce);
> tween_2.rotationX = 0;
> tween_2.rotationY = 0;
> sequence.addStep(tween_2);
>
> Is now this:
>
> tween_0 = new Tween3D(target, [Go3D.x(0), Go3D.y(50),  
> Go3D.rotationZ(0)], 1, Equations.easeOutCubic);
> sequence.addStep(tween_0);
> sequence.lastStep.advance = new OnDurationComplete(.2); // advance  
> early/overlap
>
> tween_0b = new Tween3D(target, [Go3D.z(200)], 1,  
> Equations.easeOutCubic);
> sequence.addStep(tween_0b, true); // 2nd param groups it with  
> previous step. param is "addToLastStep"
>
> tween_1 = new Tween3D(target, [Go3D.x(-10), Go3D.y(85),  
> Go3D.rotationZ(15)], 1, Equations.easeOutCubic);
> sequence.addStep(tween_1);
> sequence.lastStep.advance = new OnDurationComplete(.25); // advance  
> early/overlap
>
> tween_2 = new Tween3D(target, [Go3D.rotationX(0),  
> Go3D.rotationY(0)], 1, Equations.easeOutBounce);
> sequence.addStep(tween_2);
>
>
> I'm still thinking about this approach, but thought I would throw it  
> out to you guys to see what you thought.  Right now, there's static  
> methods in Go3D that return a Go3Dproperty.  Tween3D has an array  
> called propertyChanges and if there is an array in the  
> propertyChanges argument, I just set it straight away - no parsing  
> required.  It's all ready to go and is filled with Go3DProperty  
> objects.
>
> Thoughts?
> -- 
> [ JPG ] _______________________________________________
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> GoList at goasap.org
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