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/*
 *  Copyright (C) 2007 Juan Pedro Bolívar Puente
 *
 *  This file is part of Psychosynth.
 *   
 *  Psychosynth 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.
 *
 *  Psychosynth 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 PSYNTH_TIMER_H
#define PSYNTH_TIMER_H

#include <ctime>

namespace psynth
{
namespace base
{

class timer
{
public:
    typedef int tick_type;
    typedef size_t frame_type;
    
    timer ();

    timer (int fpsrate);

    ~timer();

    void force_fps (int fpsrate);

    void reset ();

    void update ();

    tick_type ticks ()
    {
        return m_time_count;
    }
    
    tick_type delta_ticks ()
    {
        return m_delta;
    }

    frame_type frames ()
    {
        return m_total_frame_count;
    }

private:
    timeval m_clock_now;
    timeval m_clock_start;
    
    frame_type m_frame_count;
    frame_type m_total_frame_count;
    
    tick_type m_time_count;
    tick_type m_delta;
    tick_type m_last_time;
    
    int    m_fps;
    double m_rate;
    
    void update_ticks ();
};

} /* namespace base */
} /* namespace psynth */

#endif /* PSYNTH_TIMER_H */