attractor.hpp

/*
    Physical attractor.
    Copyright (C) 2015 Denis BOURGE

    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 2.1 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
    USA
*/

#ifndef HX3D_PHYSICS_2D_ATTRACTOR
#define HX3D_PHYSICS_2D_ATTRACTOR

#include "hx3d/utils/ptr.hpp"

#include "hx3d/physics/2d/collider.hpp"

namespace hx3d {
namespace physics2d {

struct Attractor {

  enum class Type {
    Global = 1,
    Zone,
    Point
  };

  Type type;
  unsigned int priority;

  Attractor(Type type);

  virtual bool overlaps(const Ptr<Collider>& collider) = 0;

  virtual void computeForce(const Ptr<Collider>& collider, const float dt) = 0;

  static void setCurrentAttractor(const Ptr<Collider>& collider, const Ptr<Attractor>& attractor, const float dt);

  static void applyForce(const Ptr<Collider>& collider, const Ptr<Attractor>& attractor, const float dt);
};

} /* physics2d */
} /* hx3d */

#endif