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    <p>It looks as though your <code>Volume</code> class is as you said, mostly complete and self-contained. This is good, as it will make instantiating a new instance of it within your document class easier. </p> <p>Within the document, class, to instantiate a new class, you can do the following:</p> <pre><code>var new_volume:Volume = new Volume(); addChild(new_volume); </code></pre> <p>It's important to note that the <code>stage</code> does not come into scope within your <code>Volume</code> class <strong>until you have added it to the stage from within it's parent class</strong> (in this case, it's parent class is the document class).</p> <p>So these two lines:</p> <pre><code>public var xPos:Number=stage.stageWidth/2; public var yPos:Number=stage.stageHeight/2; </code></pre> <p>don't work, as the stage is undefined there. To wait until you get know <code>stage</code> is defined, you can use an <code>Event.ADDED_TO_STAGE</code> event listener. So you can re-write your <code>Volume</code> class a bit to look more like this:</p> <pre><code>package { /* Imports here */ public class Volume extends Sprite { /* Other vars here */ public var xPos:Number; public var yPos:Number; public function Volume(){ /* Other assignments that are not stage-dependant can go here */ this.addEventListener(Event.ADDED_TO_STAGE, onStage); } private function onStage(e:Event):void{ //We remove it immediately so that it doesn't get called multiple times //As the instance is added to the display list tree this.removeEventListener(Event.ADDED_TO_STAGE, onStage); xPos = stage.stageWidth/2; yPos = stage.stageHeight/2; /* Now that we have a reference to the stage, let's go ahead and create our slider */ init(); } </code></pre> <p>from there you can go on with business as usual, and just alter your variable values as needed to get the class to work within the confines of your player environment/document class.</p>
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    1. CO@M Sost THANK YOUUUUU. Great explanation, worked perfect (except your onstage function the second time wasn't capitalized!!! =pp). I think I kinda understand how to implement classes a little better now. Simply just create an instance of them and make sure they are added to the stage and the functions within the class act in accordance to what has been defined. THANKSSS
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    2. COOops, good catch! Edited to fix that. Also, I'd change that just a bit to: "Simply create an instance of them and make sure their functions within act in accordance to what has been defined." If you don't need a reference to stage (perhaps a utility class or something else that's not stage-based) then you don't need to wait until it's on the stage :). Glad I could help!
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