code: @Override
      public void update(double extrp)
      {
          fhOld = fh;
          fvOld = fv;
          updateLastForce();
  
          // Not arrived
          if (!arrivedH)
          {
              updateNotArrivedH(extrp);
          }
          else
          {
              fh = fhDest;
          }
          if (!arrivedV)
          {
              updateNotArrivedV(extrp);
          }
          else
          {
              fv = fvDest;
          }
          fixForce();
      }
docs: /*
  Updatable