Responsible Animation Class

snipped by lolablissie

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This is a general pattern I use for a class that performs and animates responsibly. The trick it to use this pattern for an object and all of its children; the general pattern is 1)Instantiate 2)Call loadAndStart() and when done with the object 3)stopAndUnload() 

package
{
	import flash.events.TimerEvent;
	import flash.utils.Timer;
	//import flash.display.Sprite;
 
	/**
	* ...
	* @author Nina Pavlich
	*/
	public class ResponsibleClass extends Sprite
	{
 
		private var DEBUG:Boolean = false;
		private var startflag:Boolean = false;
		private var stopflag:Boolean = false;
 
		private var className:String="ResponsibleClass";
 
		//public static const MODE_VARIABLE:int =0; //variables used to define particular animation behavior
 
		private var animT:Timer;
 
		public function ResponsibleClass(debug:Boolean=false) 
		{
			traceln("Being Instantiated");	
 
			DEBUG=debug;
 
		}
		public function load():void
		{
			traceln("Loading");
			//set vairables
			addVisualElements();
			//children.load()
			loadDone(); // or dispatch when some kind of data loading is done
 
		}
		public function start():void
		{
			traceln("Starting");
			configureListeners();
			configureIntro();
			//children.start();
 
		}
		public function stop():void
		{
			traceln("Stopping");
 
			//children.stop();
			configureOutro();
		}
		public function unload():void
		{
			traceln("Unloading");
			removeListeners();
			removeVisualElements();
			//children.unload();
			nullify();
 
		}
		public function loadAndStart():void{
			traceln("Load And Start");
			startflag=true;
			load();
		}
		public function stopAndUnload():void{
			traceln("Load and Stop");
			stopflag=true;
			stop();
 
		}
		private function nullify():void
		{
			traceln("Nullify");
			animT=null;
			//children=null;
		}
		private function addVisualElements():void
		{ 
			traceln("Adding Visual Elements");
 
		}
		private function removeVisualElements():void
		{ 
			traceln("Removing Visual Elements");
 
		}
		private function configureListeners():void
		{
			traceln("Configuring Listeners");
 
			animT = new Timer(50);
			animT.addEventListener(TimerEvent.TIMER, animate, false, 0, true);
		}
		private function removeListeners():void
		{
			traceln("Removing Listeners");
 
			animT.removeEventListener(TimerEvent.TIMER, animate);
		}
		private function configureIntro():void
		{ 
			traceln("Configuring Intro");
			if(!animT.running){animT.start()}
		}
		private function configureBody():void
		{ 
			traceln("Configuring Body");
			if(!animT.running){animT.start()}
		}
		private function configureOutro():void
		{ 
			traceln("Configuring Outro");
			if(!animT.running){animT.start()}
		}
		public function loadDone():void
		{ 
			traceln("Done Loading");
			if(startflag){start()}
		}
		public function introDone():void
		{ 
			traceln("Intro Done");
			if(animT.running){animT.stop()}
			configureBody();
		}
		public function outroDone():void
		{ 
			traceln("Outro Done");
			if(animT.running){animT.stop()}
			if(stopflag){unload();}
		}
		public function animate(ev:TimerEvent):void
		{
 
		}
		public function traceln(inStr:String):void
		{
			if(DEBUG){trace(className+": "+inStr)}; 
		}
 
 
	}
 
}