(I'm working with FlashDevelop)
I'm having issue loading some external swfs in my project. This worked great until a few month back when they switched the preloader integration with :
[Frame(factoryClass="Preloader")]
Since then my swf loaded with a Loader() doesn't show.
Any idea of what changed ?
Thanks !
Code :
public class Main extends Sprite
{
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
// entry point
loadMovie("Dots.swf");
}
private function loadMovie(url:String):void {
var mLoader:Loader = new Loader();
mLoader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
mLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressHandler);
mLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onCompleteHandler);
mLoader.load(new URLRequest(url));
}
private function onCompleteHandler(loadEvent:Event):void {
trace("COMPLETE");
addChild(loadEvent.currentTarget.content);
}
private function onProgressHandler(event:ProgressEvent):void {
trace("progressHandler: bytesLoaded=" + event.bytesLoaded + " bytesTotal=" + event.bytesTotal);
}
private function ioErrorHandler (e:IOErrorEvent):void {
trace("ERROR");
}
}
Is "COMPLETE" getting traced out? I can't tell too much from the code you posted here, there could be something else going on, particularly in Dots.swf.
The one thing I see right off the bat is that your loader object may be getting garbage collected, but if it is tracing out "COMPLETE" that definitely is not the case. Try adding loader to the display list right away and see if that makes a difference. eg:
var mLoader:Loader = new Loader();
addChild(mLoader);
I do all my work in Flash Develop and have not had any issues with this. If you are able to share more code, or example project, I could investigate further.
Related
I managed to fix the whole null stage error by following MJW's guide on debugging Error #1009. But now the function that initializes the bullets doesn't get called.
Snippets:
if (stage) {
init();
} else {
addEventListener(Event.ADDED_TO_STAGE, init);
}
...
private function init(event:Event = null) {
removeEventListener(Event.ADDED_TO_STAGE, init);
stage.addEventListener(Event.ENTER_FRAME, shoot);
}
...
private function shoot(event:Event) {
var bullet:EnemyBullet = new EnemyBullet();
stage.addChild(bullet);
bullet.x = enemy.x;
bullet.y = enemy.y;
bullet.theta = Math.random() * 360;
bManager.bulletVector.push(bullet);
}
Note that when I put trace() within the second two functions, nothing happens, but the addEventListener() in the first snippet does get called (or so I think).
As a general practice, stage should not be referenced - especially in your case, where your reference is solely to add instances of your bullet class. If it's a matter of z-index, you could instead have a layer in which bullets are placed on top of other display objects on the display list.
Besides complexities loading multiple SWFs on a single stage, your code would become nice isolated functional units by adding display objects to their own hierarchy of the display list. Or, you could leverage a MVC pattern whereby a controller manipulated views.
In order for your code to work, that class must either be the main function of the SWF or added to stage.
If it's the main function of the SWF, init() will be called.
Otherwise, assure it's getting added to the display list via an addChild().
Do you really intend to fire a bullet every frame? That could be 24 to 60 bullets a second. You might want to throttle that with some probability whether a bullet with fire.
Say this was a battlefield, and your battlefield class was added to stage, it could be implemented as this:
package
{
import flash.display.Sprite;
import flash.events.Event;
[SWF(percentWidth = 100, percentHeight = 100, backgroundColor = 0x0, frameRate = 30)]
public class Battlefield extends Sprite
{
public function Battlefield()
{
if (stage)
init();
else
addEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
}
protected function addedToStageHandler(event:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
init();
}
protected function init():void
{
addEventListener(Event.ENTER_FRAME, frameHandler);
}
protected function frameHandler(event:Event):void
{
var odds:Number = Math.random();
trace((odds < 0.1 ? "Fire! " : "Skip...") + "Odds were: " + odds);
}
}
}
Which would output:
Skip... Odds were: 0.3539872486144304
Skip... Odds were: 0.742108017206192
Fire! Odds were: 0.025597115512937307
Skip... Odds were: 0.7608889108523726
Fire! Odds were: 0.08514392375946045
Skip... Odds were: 0.27881692815572023
Beyond Stage3D, I've never been fond of this initialization pattern, as you could just as easily rely on stage events, as in:
package
{
import flash.display.Sprite;
import flash.events.Event;
[SWF(percentWidth = 100, percentHeight = 100, backgroundColor = 0x0, frameRate = 30)]
public class Battlefield extends Sprite
{
public function Battlefield()
{
addEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
}
protected function addedToStageHandler(event:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
addEventListener(Event.REMOVED_FROM_STAGE, removedFromStageHandler);
addEventListener(Event.ENTER_FRAME, frameHandler);
}
protected function removedFromStageHandler(event:Event):void
{
removeEventListener(Event.ENTER_FRAME, frameHandler);
removeEventListener(Event.REMOVED_FROM_STAGE, removedFromStageHandler);
addEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
}
protected function frameHandler(event:Event):void
{
var odds:Number = Math.random();
trace((odds < 0.1 ? "Fire! " : "Skip...") + "Odds were: " + odds);
}
}
}
Therefore, upon added to stage the class initiates its actions, and upon removed from stage the class terminates its actions.
I think the issue is in the first block.
you are checking for stage, if stage is not null, then use a added to stage listener.
you should only be using addEventListener(Event.ADDED_TO_STAGE, init);
however, this is assuming that the class is DisplayObject subclass, objects that do not get added to stage cannot call the ADDED_TO_STAGE listener
I am trying to load an External swf.
But it throws an error when I compile.
ArgumentError: Error #1063: Argument count mismatch on Main/init(). Expected 0, got 1.
at flash.display::DisplayObjectContainer/addChild()
at flash.display::Stage/addChild()
at MainSWF/onLoadedAction()
Swfloader Class
public function MainSWF():void
{
addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
_loader = new Loader();
_my_url = new URLRequest("Main.swf");
_loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgressAction);
_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoadedAction);
_loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, IOErrorAction);
_loader.load(_my_url);
}
private function onLoadedAction(e:Event):void
{
var mc:Sprite = new Sprite();
mc.addChild(_loader.content);
trace(stage);
stage.addChild(mc);
_loader.removeEventListener(ProgressEvent.PROGRESS, onProgressAction);
}
Init is being called from somewhere else without passing the Event as an argument. Simple solution is to change your init code to look like this:
private function init(e:Event = null):void
{
}
Also you should change your ADDED_TO_STAGE code to look like this:
public function MainSWF():void
{
if(stage){
init();
}else{
addEventListener(Event.ADDED_TO_STAGE, init);
}
}
If you're already added to the stage before you've added the listener, (which is why we check and see if stage is define) then you're never going to fire the ADDED_TO_STAGE event again, unless you add/remove your main swf from the timeline which you most likely won't be doing. So, if you do include that bit of code then it only makes sense to modify the following code as well:
removeEventListener(Event.ADDED_TO_STAGE, init);
to
if(hasEventListener(Event.ADDED_TO_STAGE)){
removeEventListener(Event.ADDED_TO_STAGE, init);
}
Obviously the reason for checking to see if the listener exists is because we may have just jumped right to the init function inside the constructor, because the stage was already present (meaning this swf class was already added to the display list while or before our constructor code executed).
so i'm trying to make an external preloader to load my main .swf (loading.swf) file that has a class file named mainLoading.as using this code:
var l:Loader = new Loader();
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);
l.load(new URLRequest("loading.swf"));
var loadingPage:loading = new loading;
function loop (e:ProgressEvent):void{
addChild(loadingPage);
loadingPage.x = stage.stageWidth/2;
loadingPage.y = stage.stageHeight/2;
}
function done (e:Event):void{
removeChild(loadingPage);
addChild(l);
}
so I'm getting an error message saying:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at mainLoading()
I think i'm getting the error message because i am accessing the stage in my mainLoading() class file. I tried adding this to the constructor in my class file but it didn't work:
public function mainLoading () {
addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event): void {
initStartUpScene ();
}
my initStartUpScene function just throws the intro scene to the loading.swf
any suggestions?
thanks for your help.
(question) is your mainLoading extends either Sprite or Movieclip ?
EDIT
After reading your comment, I would suggest trying this :
Add a function call inside the swf content in your complete progress handler :
function done (e:Event):void{
removeChild(loadingPage);
addChild(l);
Object(l.content).initMethod();
}
content let you access the methods in your loaded .swf main class (e.g. mainLoading)
And replace the event handling in your mainLoading by :
public function mainLoading () {
//no event handling in constructor
}
public function initMethod():void {
//here you go
init();
}
public function init():void { ... //No more event here
Btw it's not the cleanest way to solve your problem.
If that's the exact message you are getting, then yes, adding the ADDED_TO_STAGE listener should have fixed it. Remember to recompile the "loading.swf" if you make any changes to it (a step I always seem to forget)
Does "loading.swf" run just fine without any errors when running it on it's own (not loading it into the "container" SWF)?
This may be unrelated to the question you asked, but you might get better results and avoid some errors by structuring your code like this:
var loadingPage:loading = new loading;
addChild(loadingPage);
loadingPage.x = stage.stageWidth/2;
loadingPage.y = stage.stageHeight/2;
var l:Loader = new Loader();
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, onProgress);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);
l.load(new URLRequest("loading.swf"));
//I renamed this function since I believe "loop" is a reserved keyword.
function onProgress (e:ProgressEvent):void{
//No code needed
}
function onComplete (e:Event):void{
removeChild(loadingPage);
addChild(l);
}
You can remove the "onProgress" function if you won't be needing it as well.
OOOOOOKKKKK, so after about a week of admitting defeat, trying it again, rewriting almost half of my code, trying to convince myself that preloaders are overrated, i finally figured it out (drum roll please):
I had a variable that was referencing the stage being called before my constructor method was called. like this:
private var xScrollPosRight:Number = stage.stageWidth - xScrollPosLeft;
I just changed stage.stageWidth to 750 and it worked.
live and learn.
So the following code is Lee's implementation of a preloader which works fine first load but goes crazy when the browser loads a cached file, jumping from 0% to 100% randomly
Things I have tried to no avail:
switching off gzip compression, tho I dont think it is on
Using ENTER_FRAME instead of progress
and complete
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);
l.load(new URLRequest("http://www.foo.com/foo.swf"));
function loop(e:ProgressEvent):void
{
perc = Math.round(e.bytesLoaded / e.bytesTotal * 100);
lt.text = String(perc);
if (perc >= 100)
l.contentLoaderInfo.removeEventListener(ProgressEvent.PROGRESS, loop);
}
function done(e:Event):void
{
l.contentLoaderInfo.removeEventListener(Event.COMPLETE, done);
addChild(l);
}
I do not believe I am loading it more than once:
public function Main():void
{
if (stage) init();
else addEventListener(Event.ADDED_TO_STAGE, init);
}
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
Security.allowDomain("http://www.foo.com");
preLoader();
}
I discovered the problem happens because the files are hosted on an addon domain.
To fix this I changed the url to reference the main domain:
from
l.load(new URLRequest("http://www.foo.com/foo.swf"))
to
l.load(new URLRequest("http://foo.maindomain.com/foo.swf"))
and also add
Security.allowDomain("http://foo.maindomain.com");
I'm working on a flash app where I load multiple swf's. But the problem is that they have different framerates (12/25/30). If I add 2 swf's they both play at 25fps. I found numerous topic about this but I can't get it to work (in AS3). Does anyone know why it doesn't work and how to make it working?
public class MainClass extends MovieClip
{
var loader:Loader = new Loader();
var request:URLRequest;
var mcMedia:MovieClip = new MovieClip();
MovieClip.prototype.setFrameRate = function(frameRate:Number)
{
var mc:MovieClip = this;
if (mc.tweenFaster != null)
{
Timer(mc.tweenFaster).stop();
}
mc.tweenFaster = new Timer(1000/frameRate);
mc.tweenFaster.addEventListener(TimerEvent.TIMER, timelineFaster);
mc.tweenFaster.start();
function timelineFaster(event:TimerEvent = null)
{
if (mc.currentFrame == mc.totalFrames)
{
mc.tweenFaster.stop();
mc.gotoAndStop(1);
}
else
{
trace(mc.currentFrame);
mc.nextFrame();
}
event.updateAfterEvent();
}
}
public function MainClass()
{
configureListeners();
request = new URLRequest("data/7/7.swf");
try
{
loader.load(request);
}
catch (error:Error)
{
trace("Unable to load requested document.");
}
}
private function configureListeners():void
{
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
loader.contentLoaderInfo.addEventListener(Event.OPEN, openHandler);
loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, progressHandler);
loader.contentLoaderInfo.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
loader.contentLoaderInfo.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler);
loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
}
private function completeHandler(event:Event):void
{
loader.content.scaleX = 550/event.target.width;
loader.content.scaleY = 400/event.target.height;
mcMedia.addChild(loader);
mcMedia.setFrameRate(12);
addChild(mcMedia);
}
In as3, if you're just looking to change the framerate, use stage.frameRate = 12; or whatever;
http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/flash/display/Stage.html#frameRate
In AS3, while you can use prototypes, you generally don't. I'd rewrite your setFrameRate function (which is badly named, shouldn't it be more.. tweenFaster, or matchFrameRate or something?)
I'd make a helper function like this:
package util{
//imports
public class TweenFasterMC extends MovieClip{
public var mc:MovieClip;
public function matchFrameRate(frameRate:Number):void
{
if (tweenFaster != null)
{
Timer(mc.tweenFaster).stop();
}
tweenFaster = new Timer(1000/frameRate);
tweenFaster.addEventListener(TimerEvent.TIMER, timelineFaster);
tweenFaster.start();
}
function timelineFaster(event:TimerEvent = null):void
{
if (currentFrame == totalFrames)
{
tweenFaster.stop();
gotoAndStop(1);
}
else
{
trace(currentFrame);
nextFrame();
}
event.updateAfterEvent();
}
}
Also, clean up your event listeners, that strong timer event listener will cause a lot of problems if you have a lot of mc's your applying this functionality to.
As far as I know all MovieClips in one flash player instance (sharing the same 'stage') will run at the same speed - there is no way to have two clips running at different speeds. So to adjust the speed you have to resort to calling gotoAndStop() on all MovieClips in the loaded clip at the right time - that won't be fun.
Code along the lines that quoo is showing will only work if the loaded swf contains just 1 MovieClip (no nesting) as far as I can see.
It seems to me that the most likely reason why this wouldn't work is that it requires every clip you load to be a simple, completely non-dynamic animation that loops for ever. If the loaded content is that simple, why not just adjust it to look better at 30fps? (If it's extremely long, a JSFL script could automate the process of adding extra frames.) Alternately, if the content isn't that simple, then attempting to change its timing by calling nextFrame from elsewhere is not going to give you what you want.
With all that said, if you're sure this is what you want to do but you're getting 0 as a return for currentFrame in your loaded content, are you sure they are AS3 SWFs? If they aren't, AS3/AS2 interoperation is a hairy subject that will warrant reading up on.
This is a real hassle, I've been scouring the net for an answer. I have particles following a path, and I want to change the speed that these particles follow the path dynamically, without changing the whole movie. just the particles movie clip.
I've tried greensock, but, that doesn't really work like i need.. i'd think there would be something that you can change dynamically for each mc, but, no dice.
the stage.frameset is only for the whole movie... argggggggg..... sucks..