anchor.diff:    void move(String direction) {
       directionSystem.addToMainDirection(direction);
     }
  +  
  +  //TODO: make it work
  +  void moveBy(String direction, {int distance: 0}) {
  +
  +  }
  +  
  +  //TODO: make it work
  +  void moveTo(int x, int y) {
  +
  +  }
   
     /**
      * Stops the movement of the sprite.
  
positive.code:    *
     * */
    Sprite.bitmapdata(State stateContext, StageXL.BitmapData bitmapData,
        {bool addToWorld: true, bool isMovable: true}) : super(
        bitmapData) {
      this.isMovable = isMovable;
      _context = stateContext;
      if (addToWorld) {
  
negative.code:     return true;
  
    }
  
    /**
     * Put the pivot point into the center of the sprite.
     */
  