AS3 monitor progress main swf loading (preload)

programming flash
1

Never had any problem with loading and monitoring loading progress of external files.
Having some problems on monitoring progress of downloading of the main swf file…

In document class constructor:
I add listeners to loaderInfo of document class…


loaderInfo.addEventListener(Event.OPEN,openListener);
loaderInfo.addEventListener(ProgressEvent.PROGRESS,progressListener);
loaderInfo.addEventListener(Event.COMPLETE,completeListener);

and I create the object I’d like to use to visualize progression
(using a textfield now, but also tried dynamically drawn graphic bar)

loaderStatus = new TextField(); 

private function progressListener (e:ProgressEvent):void 
{
    trace("progress");
            
    var percent:int = e.bytesLoaded / e.bytesTotal * 100;
    loaderStatus.text = "Loading: " + percent + "%";           
}
        
private function completeListener (e:Event):void 
{
    e.target.removeEventListener(ProgressEvent.PROGRESS, progressListener);
    e.target.removeEventListener(Event.COMPLETE, completeListener);
    trace("complete");
    stage.removeChild(loaderStatus);
}

the progress and complete listeners give feedback through tracing.
:thumb:
the open listeners doesn’t give feedback…
that’s why I’ve moved the creation of the ‘progression visualizer’
(whatever it is) inside the constructor of the document class…

I don’t get it…
why we have a loaderInfo property accessible in root/document class
if it’s useless to track the downloading of the main file
:ponder:

I’ve tried to search this and other forums
but I’ve find only info about preloaders in AS2, preloaders for external content
essential actionscript 3.0 from colin moock
has info about making a preloader in flash authoring environment
but it’s using frame scripts…

shouldn’t be possible to manage all the preloader stuff for the main clip
directly from the document class? :h:
I know that I’m new to all this AS3 world but…

hope someone will read this
have a medium-size project and all my initial assets and class
have a dimension of approximately 300K so I absolutely need
a preloader for the main file

Any hints, suggestions, pointers are really appreciated
Thanks
Jo

2

I don’t know if it still helps bit somehow it works here… placed on first frame (which has no content)

stop();

this.loaderInfo.addEventListener(ProgressEvent.PROGRESS,onMainLoadProgress);
this.loaderInfo.addEventListener(Event.COMPLETE,onMainLoadCompletes);


function onMainLoadProgress(event:ProgressEvent):void {
    trace(event.bytesLoaded);
}

function onMainLoadCompletes(event:Event):void {
    //continue to next frame
}