Simple AS3 Animation Engine

programming flash
1

Ok. So it’s already understood that my logic for creating these classes might be faulty. But here we go. All I wanted to do was attach animations to an object in a way like style sheets. But, I’ve run into runtime problems … like, the animations don’t always finish … or ever finish, and unless its published and viewed on the web, its very choppy when previewing in Flash CS3. So here we go …

My simple transition class:


package com.version2.utils {
 import flash.display.MovieClip;
 import flash.events.Event;
 import fl.transitions.Tween;
 import fl.transitions.TweenEvent;
 import fl.transitions.easing.*;
 public class Transition {
  public var mc:MovieClip;
  function Transition(t:MovieClip){
   mc = t;
  }
  public function opacity(o:Object) {
   var clip:MovieClip = mc;
   var start:Number = o.start;
   var end:Number = o.end;
   var alphaDur:Number = o.alphaDur;
   var alphaTween:Tween = new Tween(clip, "alpha", Strong.easeOut, start, end, alphaDur, true);
  }
 }
}

My Style class:


package com.version2.utils{
 
 import flash.display.MovieClip;
 import com.version2.utils.Transition;
 
 public class Style{
  public function LogoIn(obj:Object)
  {
   var effect:Transition = new Transition(obj.MC);
   effect.opacity({start:0, end:obj.Alpha, alphaDur:1});
  }
 }
}

And then to use the style class:


var logo:Logo = new Logo();
logo.name = "logo";
logo.alpha = 0;
addChild(logo);
 
var style:Style = new Style();
style.LogoIn({MC:logo});

So is this just bad coding? Why would animations not finish? Grrr … I wish I had the answers.