NRE_Clock.hpp

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     #pragma once

    #include <iostream>
    #include <thread>
    #include <chrono>

    #include <Utility/String/NRE_String.hpp>

    namespace NRE {
        namespace Time {

            typedef std::chrono::steady_clock Chrono;
            typedef std::chrono::time_point<Chrono> TimePoint;
            typedef std::chrono::duration<float, std::milli> TimeStep;

            class Clock {
                private:    //Fields
                    TimePoint now;      
                    TimePoint before;   
                    TimePoint frame;    
                    TimeStep timestep;  
                    int nbFrames;       
                    bool show;          
                public:    // Methods
                    //## Constructor ##//
                        Clock();

                    //## Copy-Constructor ##//
                        Clock(Clock const& c) = default;

                    //## Move-Constructor ##//
                        Clock(Clock && c) = default;

                    //## Deconstructor ##//
                        ~Clock() = default;

                    //## Getter ##//
                        TimeStep const& getTimestep() const;
                        float getDelta() const;

                    //## Methods ##//
                        void update();
                        void updateAndSleep(TimeStep const& time);
                        void sleep(TimeStep const& time);
                        void showFPS();
                        void hideFPS();

                    //## Assignment Operator ##//
                        Clock& operator =(Clock const& c) = default;
                        Clock& operator =(Clock && c) = default;

                    //## Stream Operator ##//
                        Utility::String toString() const;

                private:   // Methods
                    void updateNow();
                    void updateBefore();
                    void updateTimestep();
                    void updateFrame();

                public:     // Static
                    static float TIMESTEP;  
            };

            std::ostream& operator <<(std::ostream& stream, Clock const& o);
        }
    }

    #include "NRE_Clock.tpp"