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

//-----------------------------------------------------------------------------
// eoDetTournament.h
// (c) GeNeura Team, 1998 - EEAAX 1999
/*
    This library 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 2 of the License, or (at your option) any later version.

    This library 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 this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
             Marc.Schoenauer@polytechnique.fr
 */
//-----------------------------------------------------------------------------

#ifndef eoDetTournament_h
#define eoDetTournament_h

//-----------------------------------------------------------------------------

#include <functional>  //
#include <numeric>     // accumulate

#include <eoFunctor.h>
#include <eoPop.h>
#include <utils/eoLogger.h>
#include <utils/selectors.h>

/** eoDetTournamentSelect: a selection method that selects ONE individual by
 deterministic tournament
 -MS- 24/10/99

 @ingroup Selectors
 */
template <class EOT> class eoDetTournamentSelect: public eoSelectOne<EOT>
{
 public:
  /* (Default) Constructor -
     @param _tSize tournament size
  */
  eoDetTournamentSelect(unsigned _tSize = 2 ):eoSelectOne<EOT>(), tSize(_tSize) {
    // consistency check
    if (tSize < 2) {
        eo::log << eo::warnings << "Tournament size should be >= 2, adjusted to 2" << std::endl;
      tSize = 2;
    }
  }

  /* Perform deterministic tournament calling the appropriate fn
     see selectors.h
  */
  virtual const EOT& operator()(const eoPop<EOT>& _pop)
  {
      return deterministic_tournament(_pop, tSize);
  }

 private:
  unsigned tSize;
};

//-----------------------------------------------------------------------------

#endif