renamed libpg to libbear

[physics.git] / src / Effects / Effect.h

/*
 *  Copyright (C) 2008 Patrik Gornicz, Gornicz_P (at) hotmail (dot) com.
 *
 *  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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef EFFECT_H
#define EFFECT_H

#include <bear/Vector2.h>
using namespace bear;


// Mutual headers ...
class PhysicsEntity;

/// ***** Header Class *****

class Effect
{
  protected:
    Effect();

  public:
    virtual ~Effect();

    virtual Vector2 positionDelta(const PhysicsEntity*, float) const;
    virtual Vector2 velocityDelta(const PhysicsEntity*, float) const;
    virtual Vector2 forceDelta(const PhysicsEntity*, float) const;
};

#endif // EFFECT_H