logo_image = Image("logo.png");

screen_width = Window.GetWidth();
screen_height = Window.GetHeight();

logo_width = logo_image.GetWidth();
logo_height = logo_image.GetHeight();

logo_x = screen_width / 2 - logo_width / 2;
logo_y = screen_height / 2 - logo_height / 2;

logo_sprite = Sprite(logo_image);
logo_sprite.SetX(logo_x);
logo_sprite.SetY(logo_y);
logo_sprite.SetOpacity(1);

fun refresh_callback () {
  # Simple rotation or pulse could go here
}

Plymouth.SetRefreshFunction (refresh_callback);