GameClock.hpp

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/*
 * =====================================================================================
 *
 *       Filename:  GameClock.hpp
 *
 *    Description:
 *
 *        Created:  14/12/2014 13:42:17
 *
 *         Author:  Quentin Bazin, <quent42340@gmail.com>
 *
 * =====================================================================================
 */
#ifndef GK_GAMECLOCK_HPP_
#define GK_GAMECLOCK_HPP_

#include <functional>

#include "gk/core/IntTypes.hpp"

namespace gk {

class GameClock {
    public:
        static u32 getTicks(bool realTime = false);

        void measureLastFrameDuration();

        void updateGame(std::function<void(void)> updateFunc);

        void drawGame(std::function<void(void)> drawFunc);

        void waitForNextFrame();

        void setTimestep(u8 timestep) { m_timestep = timestep; }

    private:
        static u32 ticks;

        u32 m_lastFrameDate = 0;
        u32 m_lag = 0;
        u32 m_timeDropped = 0;

        u8 m_timestep = 6;
        u8 m_numUpdates = 0;
};

} // namespace gk

#endif // GK_GAMECLOCK_HPP_