Why doesn't it go to create Body through another class?

Question

Java

I welcome everyone.
The problem is that there is no way I can create a DynamicBody using another class.
I have a Player class:

public class Player extends Sprite {

    public World world;
    public Body b2body;

    public Player(World world) {
        this.world = world;
        definePlayer();
    }


    // create player
    public void definePlayer() {
        BodyDef bdef = new BodyDef();
        bdef.position.set(32 / MyGdxGame.PPM, 200 / MyGdxGame.PPM);
        bdef.type = BodyDef.BodyType.DynamicBody;
        b2body = world.createBody(bdef);

        FixtureDef fdef = new FixtureDef();
        CircleShape shape = new CircleShape();
        shape.setRadius(5 / MyGdxGame.PPM);

        fdef.shape = shape;
        b2body.createFixture(fdef);

    }

}

And in the main class I run it like this:

world = new World(new Vector2(0, -10), true);
player = new Player(world); // create player

Well, then everything is perfectly rendered by itself:

// clear game screen
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        // render game map
        render.render();

        // render box2dbodies
        b2dr.render(world, gameCam.combined);

        // set batch to draw camera
        MyGdxGame.batch.setProjectionMatrix(hud.stage.getCamera().combined);
        hud.stage.draw();

So I'm trying to do the same trick with the Enemy class , but it didn't work. Nothing works at all.
And the most interesting thing is that if you write this separately in the main class:

BodyDef bdef = new BodyDef();
        bdef.position.set(32 + 10 / MyGdxGame.PPM, 200 + 10 / MyGdxGame.PPM);
        bdef.type = BodyDef.BodyType.DynamicBody;
        super.b2body = super.world.createBody(bdef);

        FixtureDef fdef = new FixtureDef();
        CircleShape shape = new CircleShape();
        shape.setRadius(20 / MyGdxGame.PPM);

        fdef.shape = shape;
        super.b2body.createFixture(fdef);

That will all work.
What am I doing wrong and why doesn't it work?

Answer 1

Where is the physics update? Where is the .dispose() of a shape that is no longer needed after being passed to the fixture? Most importantly, where is the Exception? Telepaths on vacation.