Base Class

/**
 * Copyright _wonder ( http://wonderfl.net/user/_wonder )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/jgwu
 */

// forked from _wonder's base
package {
    import flash.display.Sprite;
    import flash.events.Event;
    
    public class ClassName extends Sprite {
    		private var particles:Array;
    		private var numParticles:uint = 30;
    		
    		public function ClassName() {
            init();
        }
        
        private function init():void {
        		particles = new Array();
        		for( var i:uint=0; i < numParticles; i++ ){
        			var particle:Ball = new Ball( 5 );
        			particle.x = Math.random() * stage.stageWidth;
        			particle.y = Math.random() * stage.stageHeight;
        			particle.mass = 1;
        			addChild( particle );
        			particles.push( particle );
        		}
        		
        		addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }
        
        private function onEnterFrame(e:Event):void {
        		
        }
    }
}

import flash.display.Sprite;

class Ball extends Sprite {
	public var radius:Number;
	public var color:uint;
	public var vx:Number = 0;
	public var vy:Number = 0;
	public var mass:Number;
	
	public function Ball(radius:Number=40, color:uint=0Xff0000){
		this.radius = radius;
		this.color = color;
		init();
	}
	
	public function init():void {
		graphics.beginFill(color);
		graphics.drawCircle(0, 0, radius);
		graphics.endFill();
	}
}