code: private void updateLastForce()
      {
          if (Double.compare(fhLast, fhDest) != 0)
          {
              fhLast = fhDest;
              arrivedH = false;
          }
          if (Double.compare(fvLast, fvDest) != 0)
          {
              fvLast = fvDest;
              arrivedV = false;
          }
      }
docs: Update the last direction.