public void tick() {
		walkblock();

		if (!getWalkBlock()) {

			switch (iRandom.nextInt(4)) {
			case 0:
				aiUp();
				break;
			case 1:
				aiRight();
				break;
			case 2:
				aiDown();
				break;
			case 3:
				aiLeft();
				break;
			}
		}
		
		setTexture(iTexture.ID_MOUSE_0 + face);
	}