CODEWITHSUNDEEP
androidlibgdx
Le Duy Khanh
Le Duy Khanh

Reputation: 1369

render in libgdx can't update the new value to draw

I just start libgdx and this looks simple but I don't understand. My render method in screen object will call the render method from WorldRenderer:

public World world;
public void render() {

    spriteBatch.begin();
        drawBlocks();
        drawBob();
    spriteBatch.end();
    if (debug)
        drawDebug();
}
private void drawBob() {
    Bob bob = this.world.getBob();
    Log.e("inside drawBob",this.world.getBob().getPosition().x  +"dadas");
    bobFrame = bob.isFacingLeft() ? bobIdleLeft : bobIdleRight;
    if(bob.getState().equals(State.WALKING)) {
        bobFrame = bob.isFacingLeft() ? walkLeftAnimation.getKeyFrame(bob.getStateTime(), true) : walkRightAnimation.getKeyFrame(bob.getStateTime(), true);
    }
    spriteBatch.draw(bobFrame, bob.getPosition().x * ppuX, bob.getPosition().y * ppuY, Bob.SIZE * ppuX, Bob.SIZE * ppuY);

// Screen render method

void render(float delta) {
       Gdx.gl.glClearColor(0.1f, 0.1f, 0.1f, 1); 
       Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); 
        controller.update(delta);
        renderer.render();
         }

I have a updateBob method to update world's bob position. here is controller 's update :

    public void update(float delta) {
    processInput();
    Vector2 pos = new Vector2(7,7);
    //bob.setPosition(pos);
    bob.getPosition().x += 1;
    bob.update(delta);
}

Application create() method 

    public void create() {
    setScreen(new GameScreen());
    world = new World();
    renderer = new WorldRenderer(world, true);
    controller = new WorldController(world);
    //Gdx.input.setInputProcessor(this);
}

Inside the method, I updated it and the value change. but the bob's position in render doesn't change, so I cannot make Bob move. Please tell me where is wrong.

Upvotes: 1

Views: 510

Answers (1)

Robert P
Robert P

Reputation: 9823

After a discussion in the chat we found the problem. If you override the render() in your ApplicationListener, you have to call super.render() to be sure, that render(float delta) in Screen is called. The same should count for pause() and other methods of ApplicationListener to.

Upvotes: 1

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