shooting with mouse [Libgdx] [box2d]

Newbie & Debugging Questions
#1

hi guys, i have a problem, i don’t can do my spaceship shooting with mouse, my spaceship rotation changes with mouse cursor, but i dont can changes my shot direction.

my spaceship and my fire ball extends Sprite [box2d]
the space ship look in mouse cursor direction.

my method Fire, stay in my spaceship class

public void fire(){
        fireballs.add(new FireBall(screen, corpo.getPosition().x, corpo.getPosition().y));
    }

My method constructor and defineFireBall,stay in my fireball class

 
public FireBall(PlayScreen screen, float x, float y){
    	super(screen.getAtlas().findRegion("fireball"));
        
        this.screen = screen;
        this.world = screen.mundo;
        frames = new Array<TextureRegion>();   
            
        
        
        setBounds(x, y, 6 / ExGame.PPM, 6 /ExGame.PPM);
        defineFireBall();
    }


public void defineFireBall(){
        BodyDef bdef = new BodyDef();       
        bdef.position.set(getX(), getY());
        bdef.type = BodyDef.BodyType.DynamicBody;
        if(!world.isLocked())
        b2body = world.createBody(bdef);

       
        
        FixtureDef fdef = new FixtureDef();
        CircleShape shape = new CircleShape();
        shape.setRadius(3 / ExGame.PPM);      

        fdef.shape = shape;
        fdef.restitution = 1;
        fdef.friction = 0;
        b2body.createFixture(fdef).setUserData(this);
        
        b2body.setLinearVelocity(new Vector2( 2, 2.5f));
        setOriginCenter();
        setRotation(screen.jogador.getRotation());
        
      
    }

my update method

public void update(float dt){
        stateTime += dt;
       
       
        setPosition(b2body.getPosition().x - getWidth() / 2, b2body.getPosition().y - getHeight() / 2);
        
        
        
        if((stateTime > 3 || setToDestroy) && !destroyed) {
            world.destroyBody(b2body);
            destroyed = true;
        }
        if(b2body.getLinearVelocity().y > 2f)
            b2body.setLinearVelocity(b2body.getLinearVelocity().x, 2f);
        if((b2body.getLinearVelocity().x < 0))
            setToDestroy();
    }

If you can help me, I thank you.