So I start to try to do some game in java with libgdx, and I am trying to use the AssetsManager. but it keeps giving an error. I will put the code (I will try to resume the code) and the output.
The game goes through the loading screen fine but when it reaches the game screen it stops and gives an error, I do believe it's because the assets.
If someone knows why I am getting this error.
DesktopLauncher.java
public class DesktopLauncher {
public static void main (String[] arg) {
LwjglApplicationConfiguration config = new LwjglApplicationConfiguration();
new LwjglApplication(new pressme(), config);
}
}
pressme.java
public class pressme extends Game {
LoadingScreen loadingscreen;
AssetsManager assetsmanager;
Assets assets;
#Override
public void create() {
assets = new Assets();
assetsmanager = new AssetsManager();
assetsmanager.load();
assets.other();
loadingscreen = new LoadingScreen(this);
setScreen(loadingscreen);
}
}
LoadingScreen.java
public class LoadingScreen implements Screen {
Assets assets;
AssetsManager assetsmanager;
private final pressme game;
public GameScreen game_screen;
public LoadingScreen(final pressme game){
assets = new Assets();
assetsmanager = new AssetsManager();
this.game = game;
}
#Override
public void show() {
assetsmanager.load();
}
private void update(float delta){
System.out.println(progress);
if(assetsmanager.manager.update()) {
game.setScreen(new GameScreen(game));
}
progress = assetsmanager.manager.getProgress();
}
}
GameScreen.java
public class GameScreen implements Screen {
pressme game;
Assets assets;
AssetsManager assetsmanager;
public GameScreen(pressme game){
this.game = game;
assets = new Assets();
assetsmanager = new AssetsManager();
}
#Override
public void render(float delta) {
Gdx.gl.glClearColor( 0.5F, 0.5F, 0.5F, 0.5F);
Gdx.gl.glClear( GL20.GL_COLOR_BUFFER_BIT | GL20.GL_DEPTH_BUFFER_BIT );
camera.update();
generalUpdate(touch, camera);
batch.setProjectionMatrix(camera.combined);
assets.load();
batch.begin();
batch.draw(assets.back, 0, 0);
batch.end();
}
}
Assets.java
public class Assets {
AssetsManager assetsmanager;
public Sprite back;
public void load(){
assetsmanager = new AssetsManager();
assetsmanager.load();
back = new Sprite(assetsmanager.manager.get(assetsmanager.back, Texture.class));
}
}
AssetsManager.java
public class AssetsManager {
public AssetManager manager = new AssetManager();
public String back = "back.png";
public void load(){
manager.load(back, Texture.class);
}
}
Output
LOADINGGG
0.0
0.0
0.015151516
0.015151516
0.030303031
.
.
.
0.969697
0.9848485
0.9848485
Exception in thread "LWJGL Application" java.lang.NullPointerException
at com.badlogic.gdx.graphics.g2d.SpriteBatch.draw(SpriteBatch.java:586)
at com.david.pressme.GameScreen.render(GameScreen.java:244)
at com.badlogic.gdx.Game.render(Game.java:46)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:223)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:124)
EDIT
RC Thank you for the tip
So After I put the "assets.load()" still with some error. I dont know if the "assets.load()" it is on the right place
LOADINGGG
0.0
0.0
0.015151516
0.015151516
0.030303031
.
.
.
0.969697
0.969697
0.9848485
0.9848485
Exception in thread "LWJGL Application" com.badlogic.gdx.utils.GdxRuntimeException: Asset not loaded: back.png
at com.badlogic.gdx.assets.AssetManager.get(AssetManager.java:144)
at com.david.pressme.Assets.load(Assets.java:254)
at com.david.pressme.GameScreen.render(GameScreen.java:172)
at com.badlogic.gdx.Game.render(Game.java:46)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:223)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:124)
EDIT2
RC, Spylot ty for the tips, it was what you said
So its resolved, i puting
"assets.load" on "public void show()"
this way when the screen its load he loads the assest on the begin, and i take it off from the
"public void render(){"
because he was always loading the assests because its a loop (I think so), then on
"Assets.java public load(){" i put "assetsmanager.load();"
Thanks Rc for the tips. Then on the same place I put the
"assetsmanager.manager.finishLoading();"
so it loads all assets before do something. Thank you spylot for the tip.
Thank you all who help or try to help much appreciate.
You should be aware that when you're loading assets, you cannot use them until you call finishLoading. finishLoading blocks all calls trying to grab onto the asset until they are fully loaded in the memory.
I highly suggest you to read the AssetManager API.
So in short, after each time you use load() call, you should finish it off using manager.finishLoading()
Related
I'm programming a libgdx game, but it is not showing splash screen immediately after the game launches. I'm using asset manager to load resources in the background. does anyone know how this comes?
It only shows a black screen when game launches then after 5-6 seconds when assets loaded in the memory it shows splash screen for a second then he main screen.
Here are my classes.
public class SplashScreen implements Screen {
private SpriteBatch batch;
private Texture logo;
private BabyGame game;
private MyAssetManager myAssetManager;
public SplashScreen(BabyGame game) {
this.game = game;
myAssetManager = new MyAssetManager();
}
#Override
public void show() {
batch = new SpriteBatch();
logo = new Texture("bg.png");
}
#Override
public void render(float delta) {
Gdx.gl.glClearColor(0.8f, 0.8f, 1, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
batch.begin();
batch.draw(logo,0,0,Gdx.graphics.getWidth(),Gdx.graphics.getHeight());
batch.end();
if (myAssetManager.update())
game.setScreen(new BabyOrange(game));
}
Here is Game class
public class BabyGame extends Game
{
AdService adService;
MyAssetManager assetManager;
public BabyGame(){
assetManager = new MyAssetManager();
}
#Override
public void create() {
setScreen(new SplashScreen(this));
}
}
and the asset class
public class MyAssetManager {
public AssetManager manager;
public MyAssetManager(){
manager = new AssetManager();
}
public void load(){
manager.load("background-orange.png",Texture.class);
manager.load("orange-phone.png",Texture.class);
manager.load("buttons.txt", TextureAtlas.class);
manager.load("bgAudio.mp3", Music.class);
manager.finishLoading();
}
public boolean update(){
return manager.update();
}
}
You can add Handler() Method in :
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
startActivity(new Intent(SplashActivity.this,MainActivity.class));
finish();
}
}, 1000);
And also please check the size of the images.
I'm desperately seeking for help. Searched already everywhere, can't find an answer.
I'm trying to load tmx Tiled map with libgdx. I have no idea what's wrong, this is an exception:
Exception in thread "LWJGL Application" com.badlogic.gdx.utils.SerializationException: Error parsing file: level1.tmx
at com.badlogic.gdx.utils.XmlReader.parse(XmlReader.java:83)
at com.badlogic.gdx.maps.tiled.TmxMapLoader.load(TmxMapLoader.java:80)
at com.badlogic.gdx.maps.tiled.TmxMapLoader.load(TmxMapLoader.java:67)
at com.mygdx.game.PlayScreen.<init>(PlayScreen.java:35)
at com.mygdx.game.MyGdxGame.create(MyGdxGame.java:30)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:149)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)
Caused by: com.badlogic.gdx.utils.GdxRuntimeException: File not found: level1.tmx (Internal)
at com.badlogic.gdx.files.FileHandle.read(FileHandle.java:136)
at com.badlogic.gdx.files.FileHandle.reader(FileHandle.java:163)
at com.badlogic.gdx.utils.XmlReader.parse(XmlReader.java:81)
...
and this is my code:
public class PlayScreen implements Screen {
private MyGdxGame game;
private Texture texture;
private OrthographicCamera gamecam;
private Viewport gamePort;
private Hud hud;
private TiledMap map;
private TmxMapLoader mapLoader;
private OrthogonalTiledMapRenderer renderer;
public PlayScreen(MyGdxGame game) {
this.game = game;
gamecam = new OrthographicCamera();
gamePort = new FitViewport(MyGdxGame.V_WIDTH, MyGdxGame.V_HEIGHT, gamecam);
hud = new Hud(game.batch);
mapLoader = new TmxMapLoader();
map = mapLoader.load("level1.tmx"); //THIS file cannot be found...
renderer = new OrthogonalTiledMapRenderer(map);
gamecam.position.set(gamePort.getWorldWidth() / 2, gamePort.getWorldHeight() / 2, 0);
}
#Override
public void show() {
}
public void handleInput(float dt) {
if (Gdx.input.isTouched())
gamecam.position.x += 100 * dt;
}
public void update(float dt) {
handleInput(dt);
gamecam.update();
renderer.setView(gamecam);
}
#Override
public void render(float delta) {
update(delta);
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
renderer.render();
game.batch.setProjectionMatrix(hud.stage.getCamera().combined);
hud.stage.draw();
}
//lines above are potentially bad
...
}
level1.tmx and proper tileset.png file sit together in assets folder.
Tried also remaking the map with another tileset - got the same error. I see 'level1.tmx' in the project view window, in assets folder, 100% sure they are there. Using Android Studio.
Exception above is thrown while I'm trying to run program in desktop. As I'm trying to do so in android, it's all fine, compiled and built, but there's no map rendered and I see nothing except the black screen.
Hope there's a person who could help me, regards:)
I am having a weird issue with just loading my assets, using the assetManager. My assetManager is a separate class I made to make everything shorter and more neat. My Asset class isn't static. I have all the assets loaded in a non static assetDescriptor.
I load my splash screen which in tern loads all my assets while that is displaying. when I call the other screen the assets I have loaded can not be loaded and causes my game to crash. The splash screen does load but when it assigns a new screen it crashes.
I have spent 2 days on this issue. trying more then 15 variations. To no prevail.
My error message is:
com.badlogic.gdx.utils.GdxRuntimeException: Asset not loaded: stuff.png
at com.badlogic.gdx.assets.AssetManager.get(AssetManager.java:144)
at com.badlogic.gdx.assets.AssetManager.get(AssetManager.java:167)
at com.nectar.pewdybird.mainMenu.<init>(mainMenu.java:71)
at com.nectar.pewdybird.pewdyBird.render(pewdyBird.java:68)
at com.badlogic.gdx.backends.android.AndroidGraphics.onDrawFrame(AndroidGraphics.java:459)
at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
Splash.class:
public Assets assets;
public void create(){
assets = new Assets();
assets.load();
}
public void render(){
if(assets.update()) {
setScreen(new mainMenu(this));
dispose();
} else {
//Splash Screen
gl.glClearColor(0,0,0,1);
gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
batch.begin();
//Draws SplashScreen
batch.end();
}
}
public void dispose(){
this.screen.dispose();
this.batch.dispose();
}
mainMenu.class
public Assets assets;
private Texture Stuff;
public mainMenu(Splash game){
assets = game.assets;
Stuff = game.assets.manager.get(game.assets.stuff);
}
Asset.class
public AssetManager manager = new AssetManager(new InternalFileHandleResolver());
public final AssetDescriptor<Texture> stuff =
new AssetDescriptor<Texture>("stuff.png", Texture.class);
public void load(){
manager.load(stuff);
//12 More loads
manager.finishLoading();
}
public boolean update(){
return manager.update();
}
Thank you for reading and possibly helping with my maybe simple issue.
Look at your mainMenu class. You're creating a new Assets object, that don't have any asset so instead of creating a new Assets object use Assets object of Splash because you loaded assets on that object.
public Assets assets;
public Texture Stuff;
public mainMenu(){
assets = new Assets(); // why are you creating new Assets here
Stuff = assets.manager.get(assets.stuff);
}
Actually you're creating object of mainMenu by using parameterised constructor in Splash class
public mainMenu(Splash splash){
assets = splash.assets; // instead of creating new take reference of Splash class assets
Stuff = assets.manager.get(assets.stuff);
}
Here is my OOP setup:
Class MainGame extends Game:
...
public void create () {
assets = new Assets(); // my custom Assets object (constructor creates manager and AssetDescriptors
assets.load(); // loads Asset Descriptors into manager
assets.getManager().finishLoading();
batch = new SpriteBatch();
setScreen(new PlayScreen(this, assets));
}
...
public void dispose () {
assets.dispose(); // disposes asset manager
super.dispose();
batch.dispose();
}
Class PlayScreen implements Screen:
public PlayScreen(MainGame game, Assets assets) {
this.assets = assets;
this.game = game;
background = assets.getManager().get(assets.getBackground());
hero = new HeroSprite(290, 1100, this, assets);
// Create Game camera and Hub also
}
public void render(float delta) {
// Clear screen
// Use game batch to draw to screen
}
public void dispose() {
assets.dispose();
}
Class HeroSprite:
public HeroSprite(int x, int y, PlayScreen screen, Assets assets){
this.assets = assets;
this.screen = screen;
// Animation Textures
heroWalking = assets.getManager().get(assets.getWalking()); // This is an Asset Descriptor
walkAnime = new Animation(heroWalking) // my own custom animation class which takes the spritesheet and returns the appropriate frames
...
}
// This does not contain a dispose method
Sorr if there's a lot of code there I tried to minimize as much as possible. My main question is if I am disposing correctly?
It seems ok, my game runs fine. But when I quit the game and re-enter a black screen shows. This happens both on Desktop and Android.
A solution that works is to clear the memory on Android using Super Cleaner App. Since it's a memory issue I figures it has something to do with me disposing incorrectly.
EDIT : Revealing my Assets Class
public class Assets {
private AssetManager manager;
private AssetDescriptor<Texture> background;
private AssetDescriptor<Texture> wood;
public AssetManager getManager() {
return manager;
}
public AssetDescriptor<Texture> getBackground() {
return background;
}
public AssetDescriptor<Texture> getWood() {
return hero;
}
public Assets(){
manager = new AssetManager();
background = new AssetDescriptor<Texture>("textures/static/bg.png", Texture.class);
hero = new AssetDescriptor<Texture>("textures/static/hero.png", Texture.class);
...
}
public void load(){
manager.load(background);
manager.load(hero);
...
}
public void dispose(){
manager.dispose();
}
}
Screen.dispose() does not get called automatically, you should manually call dispose when you exit a screen and not needing the assets anymore. But obviously when you need them again you need to load them again and you need a new AssetManager for that. So if your assets won't take up that much you should just keep it in memory.
On exit however you need to dispose. Game.dispose() does get called automatically. Here you should call getScreen().dispose() and have everything needing disposing in the dispose() method of the effective Screen.
Since currently it does not look like you are disposing between screens it might be because you have a static AssetManager, you should show your Assets() class.
i'm begginer programmer and need some help. I'm using eclipse and libgdx. I created a project. When i try to load my file "background.png", i get this error:
"Exception in thread "LWJGL Application"
com.badlogic.gdx.utils.GdxRuntimeException: Couldn't load file:
badlogic.jpg"
. Oh wait, did you see that ? My file's name is "background.png", and error tells me that couldn't load "badlogic.jpg" I searched many forums but didnt find the solution cuz i think im the only one who is getting this error. And dont worry i have written my code correctly.`
This is GameScreen method
Reaction game;
OrthographicCamera camera;
SpriteBatch batch;
public GameScreen(Reaction game){
this.game = game;
camera=new OrthographicCamera();
camera.setToOrtho(true,1920,1080);
batch = new SpriteBatch();
}
#Override
public void show() {
}
#Override
public void render(float delta) {
Gdx.gl.glClearColor(0.95F, 0.95F, 0.95F, 0.95F);
Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
camera.update();
batch.setProjectionMatrix(camera.combined);
batch.begin();
batch.draw(Assets.sprite_back,0,0);
batch.end();
}
#Override
public void resize(int width, int height) {
}
#Override
public void pause() {
}
#Override
public void resume() {
}
#Override
public void hide() {
}
#Override
public void dispose() {
}
}
this is Assets method
public static Texture texture_back;
public static Sprite sprite_back;
public static void load(){
texture_back= new Texture(Gdx.files.internal("data/background.png"));
texture_back.setFilter(TextureFilter.Linear,TextureFilter.Linear);
sprite_back=new Sprite(texture_back);
sprite_back.setFlip(false, true);
}
}
and this is main game method
public GameScreen game_screen;
#Override
public void create() {
Assets.load();
game_screen = new GameScreen(this);
setScreen(game_screen);
}
}
I'm sure my code is correct cuz i made it with getting help from youtube videos. Please help me, im stuck...
More information: my files are linked, when i put my png file to assets/data folder it appears in desktop's assets too, and eclipse also automatically refresh files and when i manage files on eclipse, it happens to real project folder in my desktop, i tried to make it for you easier, i wish it helps.