moFirstImprSelect.h

// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

// "moFirstImprSelect.h"

// (c) OPAC Team, LIFL, 2003-2006

/* LICENCE TEXT
   
   Contact: paradiseo-help@lists.gforge.inria.fr
*/

#ifndef __moFirstImprSelect_h
#define __moFirstImprSelect_h

#include "moMoveSelect.h"


template < class M > class moFirstImprSelect:public moMoveSelect < M >
{

public:

  typedef typename M::EOType::Fitness Fitness;


  virtual void init (const Fitness & __fit)
  {

    valid = false;
    init_fit = __fit;
  }



  bool update (const M & __move, const typename M::EOType::Fitness & __fit)
  {

    if (__fit > init_fit)
      {

        best_fit = __fit;
        best_move = __move;
        valid = true;

        return false;
      }
    else
      {
        return true;
      }
  }


  void operator   () (M & __move, Fitness & __fit) throw (EmptySelection)
  {

    if (valid)
      {
        __move = best_move;
        __fit = best_fit;
      }
    else
      throw EmptySelection ();
  }

private:

  bool valid;

  M best_move;

  Fitness init_fit;

  Fitness best_fit;

};

#endif

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