@Override
	public void update(Updater u) {
		// a monster has gravity too, as a everything on earth (except light, but light doesn't have mass. Or has it ?
		this.speedY += LivingEntity.GRAVITY;
		
		// and he moves in one direction
		if (this.direction)
			this.speedX = LivingEntity.WALKSPEED;
		else
			this.speedX = -LivingEntity.WALKSPEED;
		
		// we know update positions
		this.posY += this.speedY;
		this.posX += this.speedX;
		
		// but we hate monster walking threw walls, so let's check collisions !
		if (levelCollision())
			this.speedY = 0;
		

	}