package { import flash.display.*; import flash.events.*; public class MouseToy extends MovieClip { private var circles:Array; public function MouseToy(){ // init circles = []; for (var i:int = 0; i<30; i++){ var c:Sprite = makeCircle(); c.x = stage.stageWidth / 2; c.y = stage.stageHeight / 2; c.scaleX = 1 + i/2; c.scaleY = 0.5 + i/4; addChild(c); circles.push(c); } addEventListener(Event.ENTER_FRAME, onLoop); } // private methods private function onLoop(evt:Event):void { circles[0].y += (mouseY - circles[0].y) / 4; for (var i:int = 1; i<circles.length; i++){ var pre:Sprite = circles[i - 1]; circles[i].y += (pre.y - circles[i].y) / 4; } } private function makeCircle():Sprite{ var s:Sprite = new Sprite(); with(s.graphics){ lineStyle(0,0x000000); drawCircle(0,0,10); } return s; } } }