/* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   Copyright (c) 2013-2021 The plumed team
   (see the PEOPLE file at the root of the distribution for a list of names)

   See http://www.plumed.org for more information.

   This file is part of plumed, version 2.

   plumed is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.

   plumed is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with plumed.  If not, see <http://www.gnu.org/licenses/>.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
#ifndef __PLUMED_colvar_CoordinationBase_h
#define __PLUMED_colvar_CoordinationBase_h
#include "Colvar.h"
#include <memory>

namespace PLMD {

class NeighborList;

namespace colvar {

class CoordinationBase : public Colvar {
  bool pbc;
  bool serial;
  std::unique_ptr<NeighborList> nl;
  bool invalidateList;
  bool firsttime;

public:
  explicit CoordinationBase(const ActionOptions&);
  ~CoordinationBase();
// active methods:
  void calculate() override;
  void prepare() override;
  virtual double pairing(double distance,double&dfunc,unsigned i,unsigned j)const=0;
  static void registerKeywords( Keywords& keys );
};

}
}
#endif
