actionscript-3 - 从库加载影片剪辑时交换深度

Question

我在库中有两个带有链接的电影剪辑。

在舞台上，我有两个按钮 - 每个按钮将影片剪辑加载到舞台上的特定 mc 目标。我还有第三个按钮可以删除 mc 目标，以清除舞台。

我想知道如何更改 AS3 中的代码，以便加载的影片剪辑不会同时显示，而是相互交换，就像我以前在 AS2 中使用深度一样。

这是代码：

var myIgool = new igool ();
var myRibooa = new ribooa ();

loadigool.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_3);


function fl_MouseClickHandler_3(event:MouseEvent):void
{
mc_all.addChild (myIgool);
}

loadribooa.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_4);

function fl_MouseClickHandler_4(event:MouseEvent):void
{
mc_all.addChild (myRibooa);
}


unloadall.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_6);

function fl_MouseClickHandler_6(event:MouseEvent):void
{
removeChild(mc_all);
;   
}

Answer 1

我会推荐这样的东西：

var myIgool = new igool ();
var myRibooa = new ribooa ();

mc_all.addChild(myIgool);
mc_all.addChild(myRibooa);

myIgool.visible = false;
myRibooa.visible = false;

loadigool.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_3);

function fl_MouseClickHandler_3(event:MouseEvent):void
{
    myIgool.visible = true;
    myRibooa.visible = false;
}

loadribooa.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_4);

function fl_MouseClickHandler_4(event:MouseEvent):void
{
    myIgool.visible = false;
    myRibooa.visible = true;
}

unloadall.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_6);

function fl_MouseClickHandler_6(event:MouseEvent):void
{
    myIgool.visible = false;
    myRibooa.visible = false;  
}

但是如果你真的想交换，你也可以执行以下操作，但是我建议设置可见标志，因为它更有效，而不是覆盖不需要绘制的东西。

loadigool.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_3);

function fl_MouseClickHandler_3(event:MouseEvent):void
{
    if (myIgool.parent != mc_all)
    {
        mc_all.addChild(myIgool);
    }
    else
    {
        mc_all.setChildIndex(myIgool, mc_all.numChildren - 1);
    }
}

loadribooa.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_4);

function fl_MouseClickHandler_4(event:MouseEvent):void
{
    if (myRibooa.parent != mc_all)
    {
        mc_all.addChild(myRibooa);
    }
    else
    {
        mc_all.setChildIndex(myRibooa, mc_all.numChildren - 1);
    }
}