update method

@override void update()

Implementation

@override
void update() {
  position.add(velocity);
  var distance = basePosition.distanceTo(position);
  if (distance > 250 || distance <= -250) {
    position = basePosition.clone();
    velocity = Vector2(
      -5 + (Random().nextDouble() * 10),
      -5 + (Random().nextDouble() * 10),
    );
  }
}