学步园

 今天开始看了《Foundation Ationsript 3.0 Animation》，对于E文巨烂的我，看的当然是中文版了。做了个简单的移动的例子。最后移动的位置还是有点偏差，改下数据类型可能会好一点.

移动类：

 package<br /> {<br /> import flash.display.Sprite;<br /> import flash.events.Event;<br /> import flash.events.MouseEvent;<br /> import flash.events.TimerEvent;<br /> import flash.utils.Timer;</p> <p> public class FirstAnimation extends Sprite<br /> {<br /> private var _sprite:Sprite;<br /> private var var_v:int=5;<br /> private var var_x:int=0;<br /> private var var_y:int=0<br /> private var time:int=1;<br /> private var timer:Timer=null;<br /> public function FirstAnimation()<br /> {<br /> init();<br /> }<br /> private function init():void{<br /> _sprite=new Sprite();<br /> addChild(_sprite);<br /> _sprite.graphics.beginFill(0xff0000);<br /> _sprite.graphics.drawCircle(20,20,40);<br /> _sprite.graphics.endFill();<br /> _sprite.x=50;<br /> _sprite.y=50;<br /> //addEventListener(MouseEvent.CLICK,drag);</p> <p> }<br /> public function drag(event:MouseEvent):void{<br /> if(timer!=null)<br /> timer.stop();<br /> var_x=event.stageX-_sprite.x;<br /> var_y=event.stageY-_sprite.y;<br /> var length:int=Math.sqrt(var_x*var_x + var_y*var_y);<br /> time=length/var_v;<br /> timer=new Timer(100,time*2);<br /> timer.addEventListener(TimerEvent.TIMER,go);<br /> timer.start();<br /> }<br /> private function go(event:Event):void{<br /> _sprite.x+=var_x/(time*2);<br /> _sprite.y+=var_y/(time*2);<br /> }</p> <p> }<br /> } 

调用页面

<?xml version="1.0" encoding="utf-8"?><br /> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()"><br /> <mx:Script><br /> <!--[CDATA[<br /> import mx.core.UIComponent;<br /> public function init():void{<br /> var run:Run=new Run();<br /> var uic:UIComponent = new UIComponent();<br /> var first:FirstAnimation=new FirstAnimation();</p> <p> uic.addChild(first);<br /> addChild(uic);<br /> addEventListener(MouseEvent.CLICK,first.drag);<br /> }<br /> ]]--><br /> </mx:Script><br /> </mx:Application><br />