forked from: forked from: forked from: forked from: forked from: flash on 2010-1-11

/**
 * Copyright Tamanegi_kenshi ( http://wonderfl.net/user/Tamanegi_kenshi )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/f8lp
 */

// forked from Tamanegi_kenshi's forked from: forked from: forked from: forked from: flash on 2010-1-11
package {
	import flash.events.MouseEvent;
	import flash.accessibility.Accessibility;
    import flash.display.Sprite;
    import flash.events.Event;
   
 
   
   
   public class test extends Sprite{
   	
   	private var ball:BALL;
   	private var ballNum:uint=50;
   	private var fl:int=250;
   	private var stX:Number=stage.stageWidth/2;
   	private var stY:Number=stage.stageHeight/2;
   	private var top:Number=-stY+20;
   	private var bottom:Number=stY-20;
   	private var left:Number=-stX+20;
   	private var right:Number=stX-20;
   	private var front:Number=250;
   	private var back:Number=-250;
   	private var balls:Array;
   	private var tx:Number;
   	private var ty:Number;
   	private var tz:Number;
   	private var spring:Number=0.3;
   	private var friction:Number=0.9;
   	
   	
   	
   	public function test(){
   		init();
   		}
   	
   	private function init():void{
   		
   		
   		ball=new BALL(50,Math.random()*0xffffff);
   		addChild(ball);
   		
   		tx=Math.random()*500-250;
   		ty=Math.random()*500-250;
   		tz=Math.random()*500;
   		
   		
   		
   		addEventListener(Event.ENTER_FRAME,onEnter);
   		stage.addEventListener(MouseEvent.CLICK,onM);
   		}
   		
   		
   		private function onEnter(e:Event):void{
   			
   			var dx:Number=tx-ball.posx;
   			var dy:Number=ty-ball.posy;
   			var dz:Number=tz-ball.posz;
 
   			ball.vz+=dz*spring;
   			ball.vx+=dx*spring;
   			ball.vy+=dy*spring;
   			ball.vz*=friction;
   			ball.vx*=friction;
   			ball.vy*=friction;
   
   			
   			ball.posz+=ball.vz;
   			ball.posx+=ball.vx;
   			ball.posy+=ball.vy;
   			

   			
   			var scale:Number=fl/(fl+ball.posz);
   			ball.scaleX=ball.scaleY=scale;
   			ball.x=stX+ball.posx*scale;
   			ball.y=stY+ball.posy*scale;
   			
   			
   			}
   		
   			private function onM(e:MouseEvent):void{
   				
   				tx=Math.random()*500-250;
   		
   		ty=Math.random()*500-250;
   		tz=Math.random()*500;
   		
   				
   				}
   			
   }
   
   
}
import flash.display.Sprite;

class BALL extends Sprite{
	public var radius:int;
	public var color:uint;
	public var vx:Number =0;
	public var vy:Number =0;
	public var vz:Number =0;
	public var posx:Number=0;
   	public var posy:Number=0;
   	public var posz:Number=0;
	
	public function BALL(radius:int=10,color:uint=0x000000){
		this.radius =radius;
		this.color =color
		graphics.lineStyle(0)
		graphics.beginFill(color);
		graphics.drawCircle(0,0,radius);
		graphics.endFill();
		}
}