I seem to be unable to properly load a texture from the "assets" folder in my libgdx project in Eclipse.
My code is:
AssetManager am = new AssetManager();
am.load("football.png", Texture.class);
if(! am.isLoaded("football.png")) System.out.println("NOT loaded");
The "assets" folder is in the "/my-gdx-game-android", whereas the code above is called from the "/my-gdx-game-core/src/com/mygdx/game/MyGdxGame.java".
I am absolutely sure the texture is there. However, I am constantly getting "NOT loaded" message. Obviously, I am doing something wrong here. Could you please help me?
Problem solved. It turns out that AssetManager loads assets asynchronously. To get rid of the "NOT loaded" message, I had to put
am.finishLoading();
before
if(! am.isLoaded("football.png")) System.out.println("NOT loaded");
This method blocks the thread until all assets are loaded.
Related
What i have
Large amount of swfs without it's sources (so i couldn't modify its)
What i need
To load and play this swfs with my AIR app.
The problem
The problem is that this swfs seems having
Security.allowDomain('*')
in their source, so they would throw
SecurityError: Error #3207: Application-sandbox content cannot access
this feature.
after i load it. I know that Air doesn't need to use this line, but instead of ignoring or warning on it my full app would stop to executing after loading one of this swfs. If only i could try/catch this string, but as i said i don't have an source of that swfs, so the only thing i could do is to modify my AIR app.
What i tried
What i already tried is to catch all errors inside loader by doning
loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, loaderIOErrorHandler);
private function loaderIOErrorHandler(e:IOErrorEvent):void {
e.preventDefault();
}
but it seems it isn't catch errors inside loader at all
Update
I couldn't share one of this swfs, but here is simulation i made that reproduce problem https://www.dropbox.com/s/0spbdzijfpboi47/problematicSwf.swf?dl=0
Here it's init code
private function init(e:Event = null):void
{
removeEventListener(Event.ADDED_TO_STAGE, init);
Security.allowDomain('*');
tf = new TextField();
tf.text = 'Me loaded!';
addChild(tf);
}
As you could see it is crashing on allowDomain inside loaded swf.
And here is how i load it
var ctx:LoaderContext = new LoaderContext(false, ApplicationDomain.currentDomain);
loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoaded);
loader.load(new URLRequest(path), ctx);
This is a typical security restriction but it's a very strict one and it's purpose is to make sure the served swf will never be used outside of what it was made for in the first place.
So the short answer to your problem is this: externally loaded swf that are sandboxed with "Security.allowDomain('*');" will not allow a sandboxed AIR app to interact with them in anyway. Instead those swf will be able to interact with the parent AIR app under restrictions via a sandbox bridge.
If truly you cannot modify those swf then you will never be able to add them to a display list in a AIR app or call any of their methods. A sandbox bridge will also be of no use to you.
It's not the answer you want to hear I bet but it's the only one you'll get.
If I have several .tmx files using the same tileSet, obviously I'd like to load the tileSet texture only once, but if I use the regular way to do it, the texture is loaded twice...
TmxMapLoader loader = new TmxMapLoader();
TiledMap tiledMap1 = loader.load("map-test.tmx");
TiledMap tiledMap2 = loader.load("map-test.tmx");
Texture texture1 = tiledMap1.getTileSets().getTile(1).getTextureRegion().getTexture();
Texture texture2 = tiledMap2.getTileSets().getTile(1).getTextureRegion().getTexture();
// texture1 is different than texture2
So my question is, is there any way to avoid the map loading the same assets several times?
Probably I'll end writing my own TmxLoader because I don't want it to load images from the Image layer but replace them with actual game objects... but I'd like to know the vanilla way...
Edit:
The solution provided by David Saltares was the one I needed, so I'll left here the proper code:
// supossing that both maps use the same tileset image...
TmxMapLoader loader = new TmxMapLoader();
assetManager.setLoader(TiledMap.class, loader);
assetManager.load("map-test1.tmx", TiledMap.class);
assetManager.load("map-test2.tmx", TiledMap.class);
assetManager.finishLoading();
TiledMap tiledMap1 = assetManager.get("map-test1.tmx");
TiledMap tiledMap2 = assetManager.get("map-test2.tmx");
Texture texture1 = tiledMap1.getTileSets().getTile(1).getTextureRegion().getTexture();
Texture texture2 = tiledMap2.getTileSets().getTile(1).getTextureRegion().getTexture();
// now texture1 == texture2 :)
What I'm wondering is, why this is not the default? I mean, assetManager has lots of loaders by default, but not the tmx one...
Use AssetManager, call its setLoader method passing a new instance of TmxMapLoader.
When loading a map via the asset manager, the tmx loader will try to handle it and tell the asset manager all its dependencies. One of these dependencies will be the texture for the tiles. The asset manager will satisfy the dependencies and then the map will actually get loaded.
All assets under the manager are referenced counted, so calling load() on the same handle, won't actually allocate more memory.
This means that, when the second map gets loaded and the manager tries to satisfy its dependencies, it will find the texture is already loaded. It will simply increment its reference count by one.
I am using assetmanager to laod a .pack file
//load assetmanager textures
Manager.load("Pong.pack", TextureAtlas.class); << line 34
Manager.finishLoading();
TextureAtlas atlas = Manager.get("Pong.pack");
the line with this << is the culprit from the log
Exception in thread "LWJGL Application" java.lang.NullPointerException
at com.Shadow.Pong.Game.Assets.init(Assets.java:34)
I pointed the working directory to the resource folder for the desktop module. So i dont know why it keeps saying nullpointerexception.
thanks in advance
try this
TextureAtlas atlas = Manager.get("Pong.pack", TextureAtlas.class);
having a wild guess because many information are missing.
I mean what exactly in Asset.java line 34.
Manager instantiated or not and many other things.
But i guess one i suggested seems to be the problem
I Realized that i didint call a new assetmanager for the parameter for the asstmanager call so thats why it was giving the nullpointer
I have problem in creating swf file runtime from an adobe air application. For example I create animation using https://github.com/jamesflorentino/Flip-Planes-AS3, I have converted the Sprite extension to MovieClip, the animation runs very good. Now I would like to make the animation could be save as swf file by user.
I have tried as3swf with script like this:
private function createSwf():void{
//let make example the Main class is taken from github above
var _main:Main = new Main();
// in this case i use AS3SWF plugin
var _swf:SWF = new SWF(_main.loaderInfo.bytes);
// this is for copy byteArray from the _swf convertor
var buffer:ByteArray = new ByteArray();
_swf.publish(buffer);
saveToDesktop(buffer);
}
private function saveToDesktop(_ba:ByteArray):void{
// create the file on the desktop
var myFile:File = File.desktopDirectory.resolvePath("demo.swf");
// create a FileStream to write the file
var fs:FileStream = new FileStream();
// add a listener so you know when its finished saving
fs.addEventListener(Event.CLOSE, fileWritten);
// open the file
fs.openAsync(myFile, FileMode.WRITE);
// write the bytearray to it
fs.writeBytes(_ba);
// close the file
fs.close();
}
private function fileWritten(e:Event):void{
trace("new swf file is created");
}
After all those process i got generated swf in my desktop folder with name demo.swf but when i open the file, it is only a white background with error message:
VerifyError: Error #1014: Class flash.events::NativeWindowBoundsEvent could not be found.
at flash.display::MovieClip/nextFrame()
at mx.managers::SystemManager/deferredNextFrame()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:278]
at mx.managers::SystemManager/preloader_preloaderDocFrameReadyHandler()[E:\dev\4.y\frameworks\projects\framework\src\mx\managers\SystemManager.as:2627]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at mx.preloaders::Preloader/timerHandler()[E:\dev\4.y\frameworks\projects\framework\src\mx\preloaders\Preloader.as:515]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()
please help me what is the best way to create swf file runtime, both from script side or command line side as long as not server side because it is desktop application.
Many Thanks
Creating a SWF at runtime is not going to be the same as taking an in memory byte array representation of an animation and saving it with a SWF extension.
If you want to build a SWF from AIR; you may consider bundling the Flex Framework with your application and use a NativeProcess to trigger mxmlc to generate a SWF. You'll need source code [or SWCs] to do this, though, it won't work with already compiled assets/classes from your running application.
Or you may want to review the file format for a SWF and go about creating it manually from your AIR application. I have no doubt this is possible, but I do not expect it to be trivial.
I'm loading as2 swf into AIR application. It works properly when loaded from file. But when loaded from bytes, it is broken in some way (it reacts to mouse, but some elements are inactive)
var bytes:ByteArray = ... //loaded from resources
var loader:Loader = new Loader();
var context:LoaderContext = new LoaderContext(false);
context.allowCodeImport = true; //this is neccessary
// Method 1 - blocks some scripts in loaded SWF
//context.applicationDomain = new ApplicationDomain();
// (application domain has no effect with as2 swf)
//context.securityDomain = SecurityDomain.currentDomain; //gives error 2114: securityDomain must be null
loader.loadBytes(bytes, context);
// Method 2 - loads properly
//loader.load(new URLRequest(file.url));
So why not just load it from file? My resources are protected with encryption and I can't dump them to disk - they must still be protected.
What tricks may exist to load from bytes properly?
There is similar question, but in my case as2 causes more problems.
AS2 and AS3 use different runtimes (bytecode is different) so you won't be able to properly execute any AS2 bytecode in the AS3 runtime. you are basically injecting AS2 code into your AS3 application, so it ain't gonna work :/
According the the documentation for LoaderContext you should only use the applicationDomain property only when loading ActionScript 3.0 SWFs. Try dropping that parameter (or setting it to null) and see what happens.
It seems that old SWF movies (AS1 and AS2, which require AVM1) loaded into an AIR app with load get put in their own domains, but those loaded with loadBytes share a domain. So if you have multiple AVM1 SWFs loaded with loadBytes their _global properties will clobber each other. This affects the Flash MX UI components (ca. 2002).
I can't be the only one trying to package ancient Flash files in AIR apps, so I figure this info may be useful to someone.