src/supertux/physic.hpp

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//  SuperTux
//  Copyright (C) 2004 Tobias Glaesser <tobi.web@gmx.de>
//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
//
//  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 HEADER_SUPERTUX_SUPERTUX_PHYSIC_HPP
#define HEADER_SUPERTUX_SUPERTUX_PHYSIC_HPP

#include "math/vector.hpp"


class Physic
{
public:
  Physic();
  ~Physic();

  void reset();

  void set_velocity(float vx, float vy);
  void set_velocity(const Vector& vector);

  void set_velocity_x(float vx);
  void set_velocity_y(float vy);

  void inverse_velocity_x();
  void inverse_velocity_y();

  Vector get_velocity() const;
  float get_velocity_x() const;
  float get_velocity_y() const;


  void set_acceleration(float ax, float ay);

  void set_acceleration_x(float ax);
  void set_acceleration_y(float ay);

  Vector get_acceleration() const;
  float get_acceleration_x() const;
  float get_acceleration_y() const;

  void enable_gravity(bool gravity_enabled);
  bool gravity_enabled() const;

  void set_gravity_modifier(float gravity);

  Vector get_movement(float elapsed_time);

private:
  float ax, ay;

  float vx, vy;
  
  bool gravity_enabled_flag;

  float gravity_modifier;
};

#endif

/* EOF */

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