如何在 Flash CS5 中制作通用暂停按钮？

Question

我正在尝试在 Flash 中制作一个按钮，用于暂停在我的文件中运行的所有影片剪辑。这些电影剪辑都不是我主时间线中的补间，它们都有自己的时间线。每个移动剪辑都由一个按钮触发，该按钮告诉剪辑开始播放。所以，如果有人能帮我创建这个暂停按钮，我将不胜感激。感谢您的宝贵时间。

Answer 1

使用像这样的基类递归地导出您想要暂停/恢复的所有符号，然后您不必遍历整个显示树：

package com.stackoverflow
{
import flash.display.MovieClip;
import flash.events.Event;

[Event(name="clipAdded", type="flash.events.Event")]
[Event(name="clipRemoved", type="flash.events.Event")]
public class BaseClip extends MovieClip
{
    protected var baseClipChildren:Array;
    protected var paused:Boolean = true;

    public function BaseClip()
    {
        super();
        baseClipChildren = new Array();
        addEventListener(Event.ADDED_TO_STAGE, onAdded);
        addEventListener("clipAdded", onClipAdded);
        addEventListener(Event.REMOVED_FROM_STAGE, onRemoved);
        addEventListener("clipRemoved", onClipRemoved);
    }

    protected function onAdded(event:Event):void
    {
        var target:BaseClip = event.target as BaseClip;
        if(target == this) {
            dispatchEvent(new Event("clipAdded", true));
        }
    }

    protected function onClipAdded(event:Event):void
    {
        var target:BaseClip = event.target as BaseClip;
        if(target && target != this) {
            event.stopImmediatePropagation();
            baseClipChildren.push(target);
        }
    }

    protected function onRemoved(event:Event):void
    {
        var target:BaseClip = event.target as BaseClip;
        if(target == this) {
            dispatchEvent(new Event("clipRemoved", true));
        }
    }

    protected function onClipRemoved(event:Event):void
    {
        var target:BaseClip = event.target as BaseClip;
        if(target && target != this) {
            event.stopImmediatePropagation();
            baseClipChildren.splice(baseClipChildren.indexOf(target),1);
        }
    }

    public function stopAll():void {
        stop();
        for each(var clip:BaseClip in baseClipChildren) {
            clip.stopAll();
        }
    }

    public function playAll():void {
        play();
        for each(var clip:BaseClip in baseClipChildren) {
            clip.playAll();
        }
    }
}
}

Answer 2

此函数将停止对象的所有嵌套movieClip。只需通过您的舞台或顶级展示课程即可停止/播放所有内容。这样您就不必跟踪向数组添加内容，也没有开销。

function recursiveStop(parentClip:DisplayObjectContainer, useStop:Boolean = true, gotoFrame:Object = null):void {
    var tmpClip:MovieClip = parentClip as MovieClip;
    if (tmpClip) {
        if (useStop) {
            (gotoFrame != null) ? tmpClip.gotoAndStop(gotoFrame) : tmpClip.stop();
        }else {
            (gotoFrame != null) ? tmpClip.gotoAndPlay(gotoFrame) : tmpClip.play();
        }
    }

    var i:int = parentClip.numChildren;
    while(i--){
        if(parentClip.getChildAt(i) is DisplayObjectContainer){
            recursiveStop(parentClip.getChildAt(i) as DisplayObjectContainer, useStop, gotoFrame);
        }
    }
}

Answer 3

以下应该可以解决问题：

// create an array to store all playing movieclips 
var playing = [];

// when a movieclip is played add it to the array like this:
// playing.push(myMovieClip);

// call this from your pause button's click handler
function pauseAll() 
{
    // loop through all the playing movieclips ...
    for (var i = 0; i < playing.length; i ++)
    {
        // ... and stop them
        playing[i].stop();
    }

    // now clear the array
    playing = [];
}

Answer 4

据我所知，没有一种内置方法可以暂停所有影片剪辑。

如果您在全局可访问对象中保留了对要暂停的影片剪辑的引用，则可以遍历调用暂停的这些引用。