public void start(){
		// EBhE쐬
		try {
			int width  = 480;
			int height = 360;
			window = new Window(width, height);
		} catch(Exception e) {
			e.printStackTrace();
			return;
		}
		
		// Model쐬E
		model = new JohnnyModel();
		model.initialize();
		
		// JZbg
		window.setMainCamera(model.getMainCamera());

		loop();
	}