I am just trying to get Actor and Stage to work properly to set up a basic flow and then move on from there. I get a null pointer to stage every time, help please. The Paddle and Ball class are identical right now, Assets is a static class for loading textures.
public class MyGame implements ApplicationListener {
public final static int WIDTH = 480;
public final static int HEIGHT = 800;
private Stage stage;
private Paddle paddle;
private Ball ball;
@Override
public void create () {
Assets.load();
Stage stage = new Stage(new ScreenViewport());
paddle = new Paddle();
ball = new Ball();
stage.addActor(paddle);
stage.addActor(ball);
}
@Override
public void render() {
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
stage.draw();
}
@Override
public void pause() {
}
@Override
public void resume() {
}
@Override
public void resize(int width, int height){
stage.getViewport().update(width,height,true);
}
@Override
public void dispose(){
Assets.dispose();
stage.dispose();
}
public int getWidth(){return WIDTH;}
public int getHeight(){return HEIGHT;}
}
public class Paddle extends Actor {
Rectangle bounds;
public Paddle(){
setPosition(150,10);
}
@Override
public void act(float delta){
}
public void draw(Batch batch , float parentAlpha){
batch.draw(Assets.paddle,150,10 );
}
private void updateBounds() {bounds.set(getX(), getY(), getWidth(), getHeight());
}
public Rectangle getBounds() {
return bounds;
}
}
The problem is, that you create a Stage in the create method, but you never asign it to your private member stage.
So instead of writing Stage stage = new Stage() in the create just write stage = new Stage().
Also remember to add the Exception and it's Stack Trace to your SO-Question and mark the line in which the Exception seems to occure. It will make it much easier for everybody who wants to help.