as3简单的文字提示队列

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设定队列长度为3，超出的长度，直接调用其消失方法即可。唯一不同的是，注意添加参数overwrite，并设置其值为1。这里有关于overwrite值的详情介绍：

OverwriteManager – control how (and if and when) tweens get overwritten>>

[AS3] 请问tweenlite的overwrite问题>>

code：

package
{
    import flash.display.Bitmap;
    import flash.display.BitmapData;
    import flash.display.Sprite;
    import flash.filters.GlowFilter;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.text.TextFormatAlign;
    import gs.TweenLite;
    /**
     * ...
     * @author Meteoric
     */
    public class TextMessage extends Sprite
    {
        private var textFormat:TextFormat = new TextFormat("Arial", 14, 0x00FF00, true);
        private var glowFilter:GlowFilter = new GlowFilter(0x000000, 0.7, 2, 2, 12, 5);

        private var txtArr:Array = [];
        private var tweenArr:Array = [];

        private var defaultY:Number = 80;

        public function TextMessage()
        {
            this.mouseEnabled = false;
            this.mouseChildren = false;
        }

        public function addText(txt:String, isHTML:Boolean = false):void
        {
            textFormat.letterSpacing = 2;

            var sprite:Sprite = new Sprite();
            addChild(sprite);

            var textField:TextField = new TextField;
            textField.autoSize = TextFormatAlign.LEFT;
            textField.htmlText = txt;

            if (!isHTML)
            {
                textField.setTextFormat(textFormat);
            }

            var bmp:Bitmap = new Bitmap();
            var bmpData:BitmapData = new BitmapData(textField.width, textField.height, true, 0x00000000);
            bmpData.draw(textField);

            bmp.bitmapData = bmpData;
            bmp.x = -bmp.width / 2;
            bmp.filters = [glowFilter];
            bmp.smoothing = true;

            sprite.addChild(bmp);

            sprite.width = bmp.width * 1.3;
            sprite.height = bmp.height * 1.3;
            sprite.x = 200;
            sprite.y = 120;

            txtArr.push(sprite);

            var aryLen:int = txtArr.length;

            for (var i:int = 0, len:int = aryLen - 3; i < len; i++)
            {
                var tempSprite:Sprite = txtArr[i] as Sprite;

                TweenLite.to(tempSprite, 0.2, {sprite.width, height:sprite.height, alpha:0, onComplete:onCompleteFunc, onCompleteParams:[tempSprite], overwrite:1});
            }

            TweenLite.to(sprite, 0.2, {bmp.width, height:bmp.height, overwrite:1});
            TweenLite.to(sprite, 0.4, {sprite.width, height:sprite.height, alpha:0, delay:3, onComplete:onCompleteFunc, onCompleteParams:[sprite], overwrite:0});

            len = aryLen > 3 ? aryLen - 3 : 0;
            for (i = aryLen - 1; i >= len; i--)
            {
                var _y:int = -27 * (aryLen - i - 1) + 100;
                TweenLite.to(txtArr[i], 0.2+(aryLen-i-1)*0.2, {y:_y,overwrite:0});
            }
        }

        private function onCompleteFunc(param_1:Sprite):void
        {

            var len:int = txtArr.length;

            for (var i:int = 0; i <  len; i++)
            {
                if (txtArr[i] == param_1)
                {
                    var bmp:Bitmap = param_1.getChildAt(0) as Bitmap;
                    bmp.bitmapData.dispose();
                    param_1.removeChild(bmp);
                    bmp = null;
                    txtArr.splice(i,1);
                    this.removeChild(param_1);
                    param_1 = null;
                    break;
                }
            }
        }

    }

}