libgdx - 내 렌더링을 볼 수 없습니다.

Question

저는 libgdx를 처음 사용합니다. 화면에 볼을 렌더링하고 싶지만 볼 수있는 것은 검은 색 빈 화면입니다.

홈페이지

public class Main implements ApplicationListener 
{ 
    @Override 
    public void render() 
    { 
    if (!paused) 
    { 
     worldController.update(Gdx.graphics.getDeltaTime()); 
    } 

    Gdx.gl.glClearColor(0, 0, 0, 0x255/255f); 
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); 

    worldRenderer.render(); 
    } 
} 

WorldRenderer

public class WorldRenderer implements Disposable 
{ 
    public void render() 
    { 
     batch.setProjectionMatrix(camera.combined); 
     batch.begin(); 

    for (Ball b : getWorldController().balls) 
     b.render(batch); 

    batch.end(); 
    } 
} 

볼

public class Ball extends AbstractGameObject 
{ 
    private TextureRegion textureRegion; 

    public Ball() 
    { 
     Texture texture = new Texture(Gdx.files.internal("images/ball.png")); 

     dimension.x = 1; 
     dimension.y = 1; 

     // Center image on game object 
     origin.set(dimension.x/2, dimension.y/2); 
     // Bounding box for collision detection 
     bounds.set(0, 0, dimension.x, dimension.y); 
     // Set physics values 
     terminalVelocity.set(3f, 4f); 
     friction.set(12f, 0f); 
     acceleration.set(0f, -25f); 

     position.x = 5; 
     position.y = 5; 

     textureRegion = new TextureRegion(texture, 0, 0, dimension.x, dimension.y); 
    } 

    @Override 
    public void render(SpriteBatch batch) 
    { 
     batch.draw(textureRegion, 
        position.x, 
        position.y, 
        origin.x, 
        origin.y, 
        dimension.x, 
        dimension.y, 
        scale.x, 
        scale.y, 
        rotation, 
        false); 
    } 

} 

추상 게임 개체 :

public abstract class AbstractGameObject 
{ 
    public Vector2 position; 
    public Vector2 dimension; 
    public Vector2 origin; 
    public Vector2 scale; 
    public float rotation; 

    public Vector2 velocity; 
    public Vector2 terminalVelocity; 
    public Vector2 friction; 
    public Vector2 acceleration; 
    public Rectangle bounds; 

    public AbstractGameObject() 
    { 
     this.position = new Vector2(); 
     this.dimension = new Vector2(); 
     this.origin = new Vector2(); 
     this.scale = new Vector2(); 

     this.velocity = new Vector2(); 
     this.terminalVelocity = new Vector2(); 
     this.friction = new Vector2(); 
     this.acceleration = new Vector2(); 
     this.bounds = new Rectangle(); 
    } 

    public void updateMotionX(float deltaTime) 
    { 
     if (velocity.x != 0) 
     { 
      // Apply friction 
      if (velocity.x > 0) 
      { 
       velocity.x = Math.max(velocity.x - friction.x * deltaTime, 0); 
      } 
      else 
      { 
       velocity.x = Math.min(velocity.x + friction.x * deltaTime, 0); 
      } 
     } 

     // Apply acceleration 
     velocity.x += acceleration.x * deltaTime; 

     // Make sure that acceleration does not exceed the terminal velocity 
     velocity.x = MathUtils.clamp(velocity.x, -terminalVelocity.x, terminalVelocity.x); 
    } 

    public void updateMotionY(float deltaTime) 
    { 
     if (velocity.y != 0) 
     { 
      if (velocity.y > 0) 
      { 
       velocity.y = Math.max(velocity.y - friction.y * deltaTime, 0); 
      } 
      else 
      { 
       velocity.y = Math.min(velocity.y + friction.y * deltaTime, 0); 
      } 
     } 

     // Apply acceleration 
     velocity.y += acceleration.y * deltaTime; 

     // Make sure that acceleration does not exceed the terminal velocity 
     velocity.y = MathUtils.clamp(velocity.y, -terminalVelocity.y, terminalVelocity.y); 
    } 

    public void update(float deltaTime) 
    { 
     updateMotionX(deltaTime); 
     updateMotionY(deltaTime); 

     position.x += velocity.x * deltaTime; 
     position.y += velocity.y * deltaTime; 
    } 

    public abstract void render (SpriteBatch batch); 
} 

무엇이 없습니까? 내가 도대체 ​​뭘 잘못하고있는 겁니까?

Answer 1

당신은 일반적으로 화면 크기 조정의 재정에 카메라를 설정해야합니다 : 당신이 당신의 공의 크기를 늘릴 수 있습니다 있도록

@Override 
public void resize(int width, int height) { 

    this.camera = new OrthographicCamera(width, height); 
    this.camera.position.set(width/2f, height/2f, 0); 
    this.camera.update(); 
} 

이 1 개 단위로 1 개 픽셀을 설정합니다. 화면 왼쪽 하단은 0,0이됩니다. 또한 화면 중앙에 공을 배치하는 것이 좋습니다.