action.h

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#ifndef ACTION_INCLUDED
#define ACTION_INCLUDED

#include "defs.h"
#include "field.h"
#include "fopr.h"
#include "force.h"
#include "randomNumbers.h"

#include "bridgeIO.h"

#ifdef USE_FACTORY
#include "factory.h"
#endif

#ifdef USE_PARAMETERS_FACTORY
#include "parameters_factory.h"
#endif


class Action
{
 public:

  Action()
    : m_vl(CommonParameters::Vlevel()) {}

  virtual ~Action() {}

 private:
  // non-copyable
  Action(const Action&);
  Action& operator=(const Action&);

 public:
  virtual void set_parameters(const Parameters& param) = 0;

  void set_parameter_verboselevel(const Bridge::VerboseLevel vl) { m_vl = vl; }

  virtual void set_config(Field *U) = 0;

  virtual double langevin(RandomNumbers *) = 0;

  virtual double calcH() = 0;

  //virtual const Field force() = 0;
  virtual void force(Field&) = 0;

  virtual void force(Field& v, Field *U)
  {
    set_config(U);
    force(v);
  }

 protected:
  Bridge::VerboseLevel m_vl;

#ifdef USE_FACTORY
 public:
  typedef Action *(*ProductCreator)();
  typedef FactoryTemplate<Action, ProductCreator>   Factory;

  static Action *New(const IdentifierType& subtype)
  {
    ProductCreator p = Factory::Find(subtype);

    return p ? (*p)() : 0;
  }
#endif
};
#endif