actionscript3的小游戏开发模型

package com.playerlife.www
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.MouseEvent;
    import flash.text.TextField;
    
    public class Game extends Sprite
    {
        /**
         * 
         * @param event
         *状态循环........................ 
         */    
        private static const INIT_GAME:int = 100;
        private static const PLAY_GAME:int = 200;
        private static const GAME_OVER:int = 300;
        private var gameState:int = 0;
        private var clicks:int = 0;
        private var txt:TextField;
        
        public function Game()
        {
            init();
        }
        
        private function init():void
        {
            this.stage.addEventListener(Event.ENTER_FRAME, gameLoop);
            gameState = INIT_GAME;
            initShow();
        }
        
        private function initShow():void
        {
            txt = new TextField();
            txt.textColor = 0xff0000;
            addChild(txt);
            txt.x = 20;
            txt.y = 20;
        }
        
        /**
         * 
         * @param event
         *游戏频率........................ 
         */    
        private function gameLoop(event:Event):void
        {
            switch(gameState)
            {
                case INIT_GAME:
                    initGame();
                    break;
                case PLAY_GAME:
                    playGame();
                    break;
                case GAME_OVER:
                    gameOver();
                    break;
            }
        }
        
        private function initGame():void
        {
            this.stage.addEventListener(MouseEvent.CLICK, onClick);
            clicks = 0;
            txt.text = clicks.toString();
            gameState = PLAY_GAME;
        }
        
        private function playGame():void
        {
            txt.text = clicks.toString();
            if(clicks >= 10)
            {
                gameState = GAME_OVER;
            }
        }
        
        private function gameOver():void
        {
            this.stage.removeEventListener(MouseEvent.CLICK, onClick);
            gameState = INIT_GAME;
        }
        
        /**
         * 
         * @param event
         * 事件模型..................
         */        
        private function onClick(event:MouseEvent):void
        {
            clicks++;
        }
    }
}