ActionScript 3 在子级中添加子级并清除第一个子级

Question

好的，设置如下：

在主时间轴内，我有一个菜单，它是一个影片剪辑。该菜单由大约 17 个“按钮”组成，每个按钮都指向网站的不同部分。单击“按钮”时（2 个示例：menu_bag_button、menu_trashbag_button），菜单将呈现动画，向左移动，并且 2 个库项目（bag_container 和 close_btn）应出现在右侧，两者都在“framecontainer”内。

然后，当菜单位于左侧时，这个特定按钮不得重复菜单动画，因此我做了一个 if 语句来查找它位于哪个帧上，如果它位于左侧，则它只是清除帧容器并再次加载内容。

问题是，当单击另一个链接时，它需要执行以下两件事之一：如果菜单位于中间且未加载任何内容，则需要将菜单设置为右侧动画，并将 content/close_btn 加载到“framecontainer”中”;或者，如果菜单在左侧，则需要清除“framecontainer”并加载相应的内容。我已经尝试了很多东西，但由于所有这些按钮都在“menu_mc”内，动作脚本必须指向根，然后指向“framecontainer”，一切都变得复杂。

如果有一种快速、更好的方法来做到这一点，而无需我花费数小时进行编码，那就太棒了……否则我现在必须坚持这种复杂的方式。

这是我当前的代码。它功能正常，除了它没有清除内容这一事实，因此它继续加载框架，以便关闭一个框架，其后面还有其他内容：

import flash.display.*;
import fl.transitions.*;
import flash.events.MouseEvent;

//Stopping on this frame (805) so the menu will be in place to interact with
stop();

//framecontainer location/size for the content to be loaded.
//Not sure if the parameters below it are absolutely necessary.
var framecontainer:MovieClip = new MovieClip();
framecontainer.width = 450;
framecontainer.height = 450;
framecontainer.x = 450;
framecontainer.y = 0;

//adding the framecontainer so that the content can be loaded into it.
//again, not sure if this is necessary yet
MovieClip(root).addChild(framecontainer);




//FIRST MENU ITEM, "BAG"
//If we can get the framecontainer to work, I don't think I'll have to create
//a custom closeBtn for each and every link. I'll be able to just use a generic
//closeBtn and have it clear the framecontainer and continue the animation.

var closebagBtn:close_btn = new close_btn();
closebagBtn.x = 0;
closebagBtn.y = 0;

var bagFrame:MovieClip = new bag_frame_mc();
bagFrame.x = 900;
bagFrame.y = 0;


menu_bag_button.addEventListener(MouseEvent.MOUSE_UP, bagClick);
function bagClick(event:MouseEvent):void{
    if(MovieClip(root).currentFrame == 850) {
// the next line does nothing, but it's supposed to clear
MovieClip(root).framecontainer.clear();
}
//Below, I need to add bagFrame and closebagBtn into framecontainer,
//but I don't know how. Tried adding ".framecontainer" in front of addchild
//but got error saying that bagClick (function above) is undefined.
else {
MovieClip(root).addChild (bagFrame);
MovieClip(root).addChild (closebagBtn);
MovieClip(root).gotoAndPlay(806);
}
}
closebagBtn.addEventListener(MouseEvent.MOUSE_UP, bagClose);
function bagClose (event:MouseEvent):void{
MovieClip(root).removeChild(bagFrame);
MovieClip(root).removeChild(closebagBtn);
MovieClip(root).gotoAndPlay(850);
}





//SECOND MENU ITEM, "TRASHBAG"

var closetrashbagBtn:close_btn = new close_btn();
closetrashbagBtn.x = 0;
closetrashbagBtn.y = 0;

var trashbagFrame:MovieClip = new trashbag_frame_mc();
trashbagFrame.x = 900;
trashbagFrame.y = 0;

menu_trashbag_button.addEventListener(MouseEvent.MOUSE_UP, trashbagClick);
function trashbagClick(event:MouseEvent):void{
    if(MovieClip(root).currentFrame == 850) {
// the next line does nothing, but it's supposed to clear
MovieClip(root).framecontainer.clear();
}
//Below, I need to add trashbagFrame and closebagBtn into framecontainer,
//but I don't know how. Tried adding ".framecontainer" in front of addchild
//but got error saying that bagClick (function above) is undefined.
else {
}
else {
MovieClip(root).addChild (trashbagFrame);
MovieClip(root).addChild (closetrashbagBtn);
MovieClip(root).gotoAndPlay(806);
}
}
closetrashbagBtn.addEventListener(MouseEvent.MOUSE_UP, trashbagClose);
function trashbagClose (event:MouseEvent):void{
MovieClip(root).removeChild(trashbagFrame);
MovieClip(root).removeChild(closetrashbagBtn);
MovieClip(root).gotoAndPlay(850);
}

/////////////// ///////////////////////////////////////////////////////////////////////////////////////// 新的功能代码（需要帮助改进）：

import flash.display.*;
import fl.transitions.*;
import flash.events.MouseEvent;

stop();

var menuList:Array = [menu_bag, menu_chips, menu_coke, menu_cup, menu_deodorant, menu_fork, menu_knife, menu_lighter, menu_milk, menu_pill, menu_rings, menu_shampoo, menu_spoon, menu_straw, menu_toothbrush, menu_trashbag, menu_water];



var closeBtn:close_btn = new close_btn();
closeBtn.x = 0;
closeBtn.y = 0;

closeBtn.addEventListener(MouseEvent.MOUSE_UP, contentClose);
function contentClose (event:MouseEvent):void{
    while(MovieClip(root).numChildren > 1)
    {
        MovieClip(root).removeChild(MovieClip(root).getChildAt(MovieClip(root).numChildren - 1));
    }
MovieClip(root).gotoAndPlay(850);
}




var bagFrame:MovieClip = new bag_frame_mc();
bagFrame.x = 900;
bagFrame.y = 0;

menu_bag.addEventListener(MouseEvent.MOUSE_UP, bagClick);
function bagClick(event:MouseEvent):void{
    if(MovieClip(root).currentFrame == 850) {
    while(MovieClip(root).numChildren > 1)
    {
        MovieClip(root).removeChild(MovieClip(root).getChildAt(MovieClip(root).numChildren - 1));
    }
MovieClip(root).addChild (bagFrame);
MovieClip(root).addChild (closeBtn);
}
else {
MovieClip(root).addChild (bagFrame);
MovieClip(root).addChild (closeBtn);
MovieClip(root).gotoAndPlay(806);
}
}

var trashbagFrame:MovieClip = new trashbag_frame_mc();
trashbagFrame.x = 900;
trashbagFrame.y = 0;

menu_trashbag.addEventListener(MouseEvent.MOUSE_UP, trashbagClick);
function trashbagClick(event:MouseEvent):void{
    if(MovieClip(root).currentFrame == 850) {
    while(MovieClip(root).numChildren > 1)
    {
        MovieClip(root).removeChild(MovieClip(root).getChildAt(MovieClip(root).numChildren - 1));
    }
MovieClip(root).addChild (trashbagFrame);
MovieClip(root).addChild (closeBtn);
}
else {
MovieClip(root).addChild (trashbagFrame);
MovieClip(root).addChild (closeBtn);
MovieClip(root).gotoAndPlay(806);
}
}

Answer 1

首先，我真的希望这不是“时间线”代码！我希望这段代码在一个类中。

其次，我真的不喜欢使用“root”的想法。如果您要多次使用它，您可以为 is 创建一个新的 var，键入为影片剪辑，然后引用它，而不是总是将其转换为影片剪辑。例如，

var target:MovieClip = root as MovieClip;
target.addChild(container);

如果此代码位于主时间轴上，那么您甚至不需要引用根（但看起来并非如此）。

要回答您的实际问题...

这些行有一个问题：

MovieClip(root).addchild (container);
MovieClip(root).container.addChild (bagLink);
MovieClip(root).addChild (closeBtn);
MovieClip(root).gotoAndPlay(806);

问题是当您说 MovieClip(root).addchild(container); 时，您正在添加的“内容”容器变量作为根的子级。 var 容器的内容不知道您已将其称为“容器”，因此您不能说 MovieClip(root).container。

但是你可以直接说：

container.addChild(bagLink);

因为 var 容器指向容器 MovieClip。