package mightypork.rogue;


import mightypork.rogue.display.DisplaySystem;
import mightypork.rogue.input.InputSystem;
import mightypork.rogue.sounds.SoundSystem;
import mightypork.utils.patterns.subscription.MessageBus;


/**
 * App interface visible to subsystems
 * 
 * @author MightyPork
 */
public interface AppAccess {

	/**
	 * @return sound system
	 */
	abstract SoundSystem snd();


	/**
	 * @return input system
	 */
	abstract InputSystem input();


	/**
	 * @return display system
	 */
	abstract DisplaySystem disp();


	/**
	 * @return event bus
	 */
	abstract MessageBus bus();


	/**
	 * Quit to OS<br>
	 * Destroy app & exit VM
	 */
	abstract void shutdown();

}