Question

我在将两个脚本合并为一个时遇到了问题。

以下是我需要导入的代码的一部分（AS2）：

stop();
var banners:Array = new Array();
var imagePaths:Array = new Array();
var links:Array = new Array();
var bodyTexts:Array = new Array();
var imageTime:Number;
var numberOfBanners:Number;
var isRandom:String;
var showHeader:String;
var bannersXML:XML = new XML();
bannersXML.ignoreWhite = true;
bannersXML.load("banners.xml");
bannersXML.onLoad = function(success) {
    if (success) {
        trace("XML LOADED");
        imageTime = parseInt(this.firstChild.firstChild.firstChild)*1000;
        numberOfBanners = parseInt(this.firstChild.childNodes[1].firstChild);
        isRandom = this.firstChild.attributes["isRandom"];
        showHeader = this.firstChild.childNodes[2].attributes["showHeader"];

        var bannerSequence:Array = new Array();
        if (isRandom == "true") {
            //Make a random sequence
            while (bannerSequence.length<numberOfBanners) {
                newRandomNumber = random(numberOfBanners);
                //Make sure that the random one chosen is not already chosen
                for (var i = 0; i<=bannerSequence.length; i++) {
                    if (newRandomNumber != bannerSequence[i]) {
                        alreadyThere = false;
                    } else {
                        alreadyThere = true;
                        break;
                    }
                }
                //Add only random values that aren't in the array
                if (!alreadyThere) {
                    bannerSequence.push(newRandomNumber);
                }
            }
        } else {
            for (var i = 0; i<numberOfBanners; i++) {
                bannerSequence.push(i);
            }
        }
    }

    //Read XML in the Random Order Chosen
    for (var i = 0; i<numberOfBanners; i++) {
        banners.push(this.firstChild.childNodes[2].childNodes[bannerSequence[i]].firstChild.firstChild.toString());
        bodyTexts.push(this.firstChild.childNodes[2].childNodes[bannerSequence[i]].childNodes[1].firstChild.nodeValue);
        imagePaths.push(this.firstChild.childNodes[2].childNodes[bannerSequence[i]].childNodes[2].firstChild.nodeValue);
        links.push(this.firstChild.childNodes[2].childNodes[bannerSequence[i]].childNodes[3].firstChild.nodeValue);
    }
    play();
};
//Start the image counter at 0
var imageCounter = 0;

我对代码的这部分内容感到厌烦

function doRandArray(a:Array):Array {//make random array
 var nLen:Number = a.length;
 var aRand:Array = a.slice();
 var nRand:Number;
 var oTemp:Object;
 for (var i:Number = 0; i < nLen; i++) {
  oTemp = aRand[i];
  nRand = i + (random(nLen – i));
  aRand[i] = aRand[nRand];
  aRand[nRand] = oTemp;
 }
 return aRand;
}

当我运行它时，我在这个地方出错：

nRand = i + (random(nLen – i));
Scene 1, Layer 'Layer 1', Frame 1, Line 265 1084: Syntax error: expecting rightparen before i.

Answer 1

as2 random(random(nLen – i));生成0,1，... nLen-i-1。不浮动只有int值。

正确的as3代码为int(Math.random()*(nLen-i));或Math.floor(Math.random()*(nLen-i));

as2：random()

as3：Math.random()

Answer 2

在 ActionScript 3 中，random功能与as2代码略有不同，只需将违规行更改为：

nRand = i + Math.random()*(nLen-1);

这应该可以解决所有错误并且工作方式相同。

编辑：如@bitmapdata.com所示，为了使其与as2中的运行相同，必须截断随机值（去除其十进制值）。除了他提出的几种可能性之外，我个人只是将nRand的类型更改为uint on declaration：

var nRand:uint;

您还可以将迭代器类型更改为var i:uint。减少内存使用总是很好;）

将AS2加入AS3时出错

2 个答案: