AS3 random .swf loading

Question

im making a site that need to have random videos load on the front page. i have couple of swfs on the root, and i made a .swf named random that will load on the main page (uploaded in same folder with the swfs) and hopefully it will load one of the movies at a time. No luck so far. this is the code i use

    stop(); 
var movieArray:Array = ['1', '2', '3'];
var loader:Loader = new Loader(); 
var index:int = movieArray.length * Math.random(); 
var url:String = movieArray[index] + '.swf'; 
trace("Attempting to load", url); 
loader.load(new URLRequest(url));
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loaderComplete); 
loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, loaderIOError); 
addChild(loader); 
function loaderComplete(e:Event):void {     
    trace("Successfully loaded", url);
    } function loaderIOError(e:IOErrorEvent):void {     
    trace("Failed to load", url); 
    }

oh, i use AS3. and the vids are made in AS3 too. Any ideas? thnx.

Answer 1

I think that this particular line is probably causing your issue:

var index:int = movieArray.length * Math.random();

Specifically, there is no guarantee that movieArray.length * Math.random() will yield an int type. You need to wrap the operation inside of Math.floor() to ensure you get an int that's within the bounds of your array:

var index:int = Math.floor(movieArray.length * Math.random());

If you're still not seeing your swf movies load then there is likely an issue elsewhere also, but my solution is the simplest to start with and if it works you're done.