/*
 *   ORXONOX - the hottest 3D action shooter ever to exist
 *
 *
 *   License notice:
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation; either version 2
 *   of the License, or (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 *   Author:
 *      ...
 *   Co-authors:
 *      ...
 *
 */

/**
  @file NPC.h
  @brief AI using WorldEntity
  @author Benjamin Knecht <beni_at_orxonox.net>
 */

#ifndef _NPC_H__
#define _NPC_H__

#include "OrxonoxPrereqs.h"

#include "Model.h"

namespace orxonox {

  class _OrxonoxExport NPC : public Model
  {
    public:

      NPC();
      virtual ~NPC();
      virtual void loadParams(TiXmlElement* xmlElem);
      void tick(float dt);
      void update();
      void setValues(Vector3 location, Vector3 speed, Vector3 acceleration, bool movable);

    private:
      float getDistance(WorldEntity* temp);
      void calculateAcceleration();
      Vector3 separation();
      Vector3 alignment();
      Vector3 cohesion();


    private:
      bool movable_;  // movability of the element, (false) gives the possiblity that an object can`t be moved by flocking but still gets into the calculation

      // those values should maybe be controlled by a higher power and should maybe be parameters that can be changed
      static int const SEPERATIONDISTANCE = 300;  //detectionradius of seperation
      static int const ALIGNMENTDISTANCE = 300;  //detectionradius of alignment
      static int const COHESIONDISTANCE = 5000;  //detectionradius of cohesion
      static int const NUMELEMENTS = 9;  //number of elements
  };
}
#endif /* _NPC_H__ */