image = Image("logo.png");

pos_x = Window.GetWidth()/2 - image.GetWidth()/2;
pos_y = Window.GetHeight()/2 - image.GetHeight()/2;

sprite = Sprite(image);
sprite.SetX(pos_x);
sprite.SetY(pos_y);

fun refresh_callback () {
  sprite.SetOpacity(1);
  spr.SetZ(15);
}

Plymouth.SetRefreshFunction (refresh_callback);