waterDrop Test

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lines:71
license : MIT License
modified : 2010-08-09 16:43:39

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package 
{
    import flash.display.Sprite;
    import flash.display.StageAlign;
    import flash.display.StageScaleMode;
    import flash.events.Event;
    import flash.events.TimerEvent;
    import flash.utils.Timer;
    
    /**
     * ...
     * @author kha
     */
    public class Main extends Sprite 
    {
        
        public function Main():void 
        {
            if (stage) init();
            else addEventListener(Event.ADDED_TO_STAGE, init);
            
            stageConfig();
        }
        
        private function init(e:Event = null):void 
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            // entry point
            
            //addEventListener(Event.ENTER_FRAME, onEnterfame);
            var timer:Timer = new Timer(100);
            timer.start();
            timer.addEventListener(TimerEvent.TIMER, onHandler);
        }
        
        private function stageConfig():void {
                stage.align = StageAlign.TOP_LEFT;
                stage.scaleMode = StageScaleMode.NO_SCALE;
                stage.frameRate = 30;
        }
        
        private function onHandler(e:TimerEvent):void {
            var total:int = Math.random() * 10;
            for (var i:int = 0; i < total; i++) {
                var posX:Number = Math.random() * stage.stageWidth;
                var posY:Number = Math.random() * stage.stageHeight;
                var w:DropWaterSprite = new DropWaterSprite(posX, posY);
                addChild(w);
            }
        }        
    }
    public class DropWaterSprite extends Sprite
    {
        private var rad:Number = 10;
        public function DropWaterSprite(x:Number, y:Number) 
        {
            this.x = x;
            this.y = y;
            this.alpha = 0.8;
            
            rad = Math.random() * 20;
            addEventListener(Event.ENTER_FRAME, onEnterframe);
            
        }
        
        private function onEnterframe(e:Event):void {
            rad += 4;
            alpha -= 0.1;
            if (this.alpha <= 0) {
                removeSelf();
            }
            
            drawGraphic();
        }
        
        private function removeSelf():void {
            removeEventListener(Event.ENTER_FRAME, onEnterframe);
            if (this.parent.contains(this)) {
                this.parent.removeChild(this);
            }
        }
        
        private function drawGraphic():void {
            this.graphics.beginFill(0xffffff);
            this.graphics.lineStyle(2, 0x080808);
            this.graphics.drawCircle(this.x, this.y, this.rad);
            this.graphics.endFill();
        }
        
        
    }
    
}

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