gelTimer.h

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/*
Gel2D Game Engine - Cross-platform 2D gaming middleware
Copyright (C) 2010-2011 Mark D. Procarione

Gel2D 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.

Gel2D 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.
*/

#ifndef __GELTIMER_H__
#define __GELTIMER_H__

#include "gelNamespace.h"

#ifdef _GEL_WIN32
    #include <windows.h>
#endif // _GEL_WIN32

#ifdef _GEL_LINUX
    #include <sys/time.h>
    #include <unistd.h>
#endif // _GEL_LINUX

namespace gel
{
        #ifdef _GEL_WIN32


    class GelTimer
    {
        public:

            GelTimer();


            double getTime();


            void setTime( double time );


            int getFPS();


            void setFPS( int fps );


            double getDelta();


            void sleep( double time );

        private:
            // Win32
            bool perfTimer; // Whether or not performance timer will be used

            __int64 freq; // Timer frequency

            __int64 perfTimer_start;
            __int64 perfTimer_elapsed;

            GELuint tickTimer_start;
            GELuint tickTimer_elapsed;

            // Global
            // Timer resolution
            double res;

            // fps
            GELuint fps;
            GELuint rfps;
            double rtime;

            // delta
            int dframe;
            double ddelta;
            double dtime;
    };
        #endif // _GEL_WIN32

    #ifdef _GEL_LINUX


    class GelTimer
    {
        public:

            GelTimer();


            double getTime();


            void setTime( double time );


            int getFPS();


            void setFPS( int fps );


            double getDelta();


            void sleep( double time );

        private:
            // Linux
                        long long t0;

            // Global
            // Timer resolution
            double res;

            // fps
            GELuint fps;
            GELuint rfps;
            double rtime;

            // delta
            int dframe;
            double ddelta;
            double dtime;
    };
    #endif // _GEL_LINUX
}

#endif // __GELTIMER_H__