Flash actionscript3.0游戏开发

//(C)Copyright weisim3.com 05.04.2010
var Xlab:TextField=new TextField();
var Ylab:TextField=new TextField();

function moused(e:MouseEvent):void {
    //trace("X:"+ mouseX+ "Y:"+ mouseY);
    Xlab.text="X:"+mouseX;
    Ylab.text="Y:"+mouseY;

    Xlab.x=2;
    Xlab.y=2;
    Ylab.x=50;
    Ylab.y=2;

    addChild(Xlab);
    addChild(Ylab);

}
stage.addEventListener(MouseEvent.MOUSE_MOVE,moused);

//trace(myCharacher_mc.y,myCharacher_mc.x,myCharacher_mc.rotation);
//第二步加入鼠标点击点
var myPoint:point=new point();
function createPoint(e:MouseEvent):void {

    myPoint.x=stage.mouseX;
    myPoint.y=stage.mouseY;
    addChild(myPoint);//建立目标点

    //第三步
    myCharacher_mc.addEventListener(Event.ENTER_FRAME, run_Follow);
    trace(myCharacher_mc.y,myCharacher_mc.x,myCharacher_mc.rotation);
}
stage.addEventListener(MouseEvent.CLICK,createPoint);

//第三步
//鼠标点击为物体的目标点(焦点中心),物体移向点击后的目标点  
//Math.atan2使用
//Math.round使用
function run_Follow(event:Event):void {

    // 目标中心点鼠标点击之后.
    // 向目标点旋转(焦点)Math.atan2(y,x)
    //角度制与弧度制的相互转换：
    //弧度 = 角度 * Math.PI / 180
    //角度 = 弧度 * 180 / Math.PI
    var cRadians:Number=Math.atan2(myPoint.y-myCharacher_mc.y,myPoint.x-myCharacher_mc.x);//弧度
    var cDegrees:Number = Math.round((cRadians*180/Math.PI));

    // 向目标移动(焦点)

    var yChange:Number=Math.round(myPoint.y-myCharacher_mc.y);
    var xChange:Number=Math.round(myPoint.x-myCharacher_mc.x);

    var yMove:Number=Math.round(yChange/20);//移动速度 负数将往相反方向移动
    var xMove:Number=Math.round(xChange/20);//移动速度 负数将往相反方向移动


    //调整方向向目标点移动
    myCharacher_mc.rotation=cDegrees+90;
    myCharacher_mc.y+=yMove;
    myCharacher_mc.x+=xMove;
}