title: Andengine, how to move sprite with touchscreen
body: <p>I begin with Andengine, and have difficulties to move my sprite when i touch the screen ( not the sprite ). I really need your help, thanks a lot.</p>
  
  <p>here is my code:</p>
  
  <pre><code>    @Override
  protected Scene onCreateScene() {
      final Scene scene = new Scene();
      Sprite backgroundSprite = new Sprite(0, 0, this.mBackgroundTextureRegion, getVertexBufferObjectManager());
      scene.attachChild(backgroundSprite);
      Carl carl = new Carl(1, 30, 361, this.carl, getVertexBufferObjectManager()){
  
          };
  
      scene.attachChild(carl);
  
  
  
      this.mStack1.add(carl);
      carl.setmStack(mStack1);
      scene.registerTouchArea(carl);
      scene.setTouchAreaBindingOnActionDownEnabled(true);
  
  
      return scene;
  }
  public boolean onTouchEvent(MotionEvent event, Carl carl) {
  
      carl.setPosition(carl.getX() +2,carl.getY() );
      return true;
  }
  </code></pre>