private void createSprites() {
		
	try {
			
		BufferedImage bimg_invader11 = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 1.1.png"));
		BufferedImage bimg_invader12 = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 1.2.png"));
		BufferedImage bimg_invader21 = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 2.1.png"));
		BufferedImage bimg_invader22 = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 2.2.png"));
		BufferedImage bimg_invader31 = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 3.1.png"));
		BufferedImage bimg_invader32 = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 3.2.png"));
		BufferedImage bimg_invader4  = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Invader 4.png"));
		BufferedImage bimg_player    = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Player.png"));
		BufferedImage bimg_missile1  = ImageIO.read(this.getClass().getResource("/resources/Space Invaders/Missile 1.png"));
		
		invader1 = new Sprite(new BufferedImage[]{bimg_invader11, bimg_invader12}, 1000);
		invader2 = new Sprite(new BufferedImage[]{bimg_invader21, bimg_invader22}, 1000);
		invader3 = new Sprite(new BufferedImage[]{bimg_invader31, bimg_invader32}, 1000);
		invader4 = new Sprite(new BufferedImage[]{bimg_invader4}, -1);
		player   = new Sprite(new BufferedImage[]{bimg_player}  , -1);
		missile1 = new Sprite(new BufferedImage[]{bimg_missile1}, -1);
			
	} catch (IOException e) {e.printStackTrace();}
				
		
	//	sprBarricade   = new Sprite(new Image[]{img_barricade} , -1);
	//	sprProjectile1 = new Sprite(new Image[]{img_projectile1}, -1);
	//	sprProjectile2 = new Sprite(new Image[]{img_projectile2}, -1);
	//	sprProjectile3 = new Sprite(new Image[]{img_projectile3}, -1);
	//	sprExplosion   = new Sprite(new Image[]{img_explosion}, -1);
		
	}