Image background = new ImageIcon(ImageIO.read(new File("src\\invasion_city.jpg"))).getImage();
int sxdim = 179;
int sydim = 117;
int shipxcoord, shipycoord;

	public Invasion(double w, double h) throws IOException {
		shipxcoord = ((int) w - sxdim) / 2;
		shipycoord = ((int) h - sxdim) / 2;
}

	@Override
	public void paintComponent(Graphics g) {
		super.paintComponent(g);
		g.drawImage(getShip(), shipxcoord, shipycoord, sxdim, sydim, null);
}
}