@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Pos other = (Pos) obj;
			if (x != other.x)
				return false;
			if (y != other.y)
				return false;
			return true;
		}