public void pickBeeper() {
		if (Display.isDead())
			return;

		if (!WorldBackend.getCurrent().checkBeepers(x, y)) {
			Display.die("Trying to pick non-existent beepers!");
			return;
		}

		if (beepers != Display.INFINITY)
			beepers++;

		WorldBackend.getCurrent().putBeepers(x, y, -1);

		Display.step();
	}