如何获得一个循环来加载带有事件监听器的影片剪辑
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【中文标题】如何获得一个循环来加载带有事件监听器的影片剪辑【英文标题】:How to get a loop to load movieclips with eventlisteners 【发布时间】:2019-07-11 02:11:07 【问题描述】:我希望场景加载 5 个不同的影片剪辑(名为 B1-B5)。每个影片剪辑都放置在特定的 x 和 y 上。每个影片剪辑在滚动/滚动时都会增长/缩小....
我通过输入所有内容并每次复制每个部分来使代码正常工作,但这很混乱,我想通过循环来清理代码(如果可能的话?)。
这是有效的代码,但我必须为每个影片剪辑复制它(更改明显的位)...
var scene1:MovieClip = new B1();
addChild(scene1);
scene1.x = 170.30;
scene1.y = 231.15;
scene1.addEventListener(MouseEvent.MOUSE_OVER, onRollOverEvent1);
scene1.addEventListener(MouseEvent.MOUSE_OUT, onRollOutEvent1);
function onRollOverEvent1(e:MouseEvent)
scene1.width=25.9;
scene1.height=25;
function onRollOutEvent1(e:MouseEvent)
scene1.width = 20.9;
scene1.height = 20;
以下是我尝试过但已经卡了很长时间的内容......
for (var i:int=1; i<5; i++)
var scene[i]:MovieClip = new "B"+i();
addChild("scene"+i);
//var scene[i]:MovieClip = new B[i]();
scene[i].addEventListener(MouseEvent.MOUSE_OVER, onRollOverEvent);
scene[i].addEventListener(MouseEvent.MOUSE_OUT, onRollOutEvent)
function onRollOverEvent(e:MouseEvent)
scene[i].width=25.9;
scene[i].height=25;
function onRollOutEvent(e:MouseEvent)
scene[i].width = 20.9;
scene[i].height = 20;
scene1.x = 170.30;
scene1.y = 231.15;
scene2.x = 284.30;
scene2.y = 250.75;
scene3.x = 377.30;
scene3.y = 280.15;
scene4.x = 444.30;
scene4.y = 321.15;
scene5.x = 196.30;
scene5.y = 172.15;
【问题讨论】:
【参考方案1】:首先,让我们回顾一下你的错误。
new "B"+i();
最好,这意味着调用一个数字 i 作为函数并将结果作为 String 添加到“B”。但即使是 new "B1"() 也不等同于 new B1()。事实上,有一个方法 getDefinitionByName(..) 允许通过其名称来寻址一个类,但我不建议使用它,因为它是高级主题。
var scene[i]:MovieClip
您不能以这种方式定义变量 scene1、scene2 等。您实际上可以设计的最接近的东西是方括号表示法:this["scene" + i] = ....
addChild("scene"+i);
参数必须是 DisplayObject 实例,而不是 String。
for (...)
...
function onRollOverEvent(e:MouseEvent)
...
不要在其他函数或循环中定义函数。
scene[i].width = 20.9;
scene[i].height = 20;
到您的循环结束时,i 将等于 5,那么,您认为这样的记录会解决什么问题?
那么,解决办法。
当您将工作解决方案扩展到多个实例时,您将采用算法。循环和数组是你的朋友。
// Lets devise a list of classes and (x,y) coordinates.
var Designs:Array = [
null, // the 0-th element
id:B1, x:170, y:230,
id:B2, x:285, y:250,
];
for (var i:int = 1; i < Design.length; i++)
// Retrieve a record for the future object.
var aDesign:Object = Designs[i];
// Get a reference to the object's class.
var aClass:Class = aDesign.id;
// Create the object. Yes, you CAN omit () with
// the "new" operator if there are no mandatory arguments.
var aThing:Movieclip = new aClass;
// Set coordinates from the design record.
aThing.x = aDesign.x;
aThing.y = aDesign.y;
// Add to the display list.
addChild(aThing);
// Subscribe the event handlers.
aThing.addEventListener(MouseEvent.MOUSE_OVER, onOver);
aThing.addEventListener(MouseEvent.MOUSE_OUT, onOut);
// Save the object's reference for the later use.
// If you'd need to address, say, 3rd object,
// you do it as following:
// Designs[3].instance
aDesign.instance = aThing;
function onOver(e:MouseEvent):void
// You subscribed all of the objects to this one event handler.
// This is the correct way to learn, which one of the objects
// is under the mouse and is dispatching the said event.
var aThing:MovieClip = e.currentTarget as MovieClip;
// Change the object's size.
aThing.width = 26;
aThing.height = 25;
function onOut(e:MouseEvent):void
// Get the source of the dispatched event.
var aThing:MovieClip = e.currentTarget as MovieClip;
// Change the object's size.
aThing.width = 21;
aThing.height = 20;
【讨论】:
您好 Organis,抱歉回复太慢了。我只记得我的密码 x.x!太感谢了!我的代码正在工作,在记住密码的同时,我设法让代码的其他部分正常工作。我确实尝试了您在此处列出的一些东西,但不知道如何将它们拼凑在一起,而且由于我尝试了很多组合,因此不值得在这里泛滥我所有的尝试。感谢您在此处输入的内容,我已经确认了我的错误所在。以上是关于如何获得一个循环来加载带有事件监听器的影片剪辑的主要内容,如果未能解决你的问题,请参考以下文章