使用FLEX和 Actionscript 开发FLASH游戏（六） -4

使用FLEX和Actionscript开发FLASH 游戏-碰撞检测（第四页）

main.mxml

<?xml version="1.0" encoding="utf-8"?>

<mx:Application

xmlns:ms="http://www.adobe.com/2006/mxml"

layout="absolute"

width="600"

height="400"

frameRate="100"

creationComplete="creationComplete()"

enterFrame="enterFrame(event)"

click="click(event)"

mouseDown="mouseDown(event)"

mouseUp="mouseUp(event)"

mouseMove="mouseMove(event)"

currentState="MainMenu">

    <mx:states>

        <mx:State

        name="Game"

        enterState="enterGame(event)"

        exitState="exitGame(event)"

        </mx:State>

        <mx:State name="MainMenu">

            <mx:AddChild relativeTo="{myCanvas}" position="lastChild">

                <mx:Button x="525" y="368" label="Start" id="btnStart" click="startGameClicked(event)"/>

            </mx:AddChild>

        </mx:State>

    </mx:states>

    <mx:Canvas x="0" y="0" width="100%" height="100%" id="myCanvas"/>

    <mx:Script>

    <![CDATA[

        protected var inGame:Boolean=false;

        public function creationComplete():void

        {

            GameObjectManager.Instance.addCollidingPair(CollisionIdentifiers.PLAYER,CollisionIdentifiers.ENEMY);

            GameObjectManager.Instance.addCollidingPair(CollisionIdentifiers.ENEMY,CollisionIdentifiers.PLAYERWEAPON);

            GameObjectManager.Instance.addCollidingPair(CollisionIdentifiers.PLAYER,CollisionIdentifiers.ENEMYWEAPON);

        }

        public function enterFrame(event:Event):void

        {

            if(inGame)

            {

                GameObjectManager.Instance.enterFrame();

                myCanvas.graphics.clear();

                myCanvas.graphics.begingBitmapFill(GameObjectManager.Instance.backBuffer,null,false,false);

                myCanvas.graphics.drawRect(0,0,this.width,this.height);

                myCanvas.graphics.endFill();

            }

        }

        privated function click(event:MouseEvent):void

        {

            GameObjectManager.Instance.click(event);

        }

        privated function mouseDown(event:MouseEvent):void

        {

            GameObjectManager.Instance.mouseDown(event);

        }

        privated function mouseUp(event:MouseEvent):void

        {

            GameObjectManager.Instance.mouseUp(event);

        }

        privated function mouseMove(event:MouseEvent):void

        {

            GameObjectManager.Instance.mouseMove(event);

        }

        protected function startGameClicked(event:Event):void

        {

            currentState="Game"

        }

        protected function enterGame(event:Event):void

        {

            Mouse.hide();

            GameObjectManager.Instance.startup();

            Level.Instance.startup();

            inGame=true;

        }

        protected function exitGame(event:Event):void

        {

            Mouse.show();

            Level.Instance.shutdown();

            GameObjectManager.Instance.shutdown();

            inGame=false;

        }

    ]]>

    </mx:Script>

</mx:Application>

就如你所见的要指定两个游戏对象碰撞只需要调用GameObjectManager的addCollidingPair函数。这里我们指定了游戏者会同敌机碰撞，敌机会同游戏者子弹碰撞，游戏者也会与敌机子弹碰撞。

那么现在既然我们可以检测到碰撞我们就需要更新游戏者、子弹和敌机类的代码，来设置他们的碰撞名以及当检测到时的反应。现在让我们看看游戏者类。

       

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/literza/archive/2009/06/04/4241568.aspx