CWE-ou-minkata/Sources/Plasma/NucleusLib/inc/hsTimer.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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it under the terms of the GNU General Public License as published by
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*==LICENSE==*/
#ifndef hsTimer_Defined
#define hsTimer_Defined

#include <chrono>

class plTimerShare
{
private:
    typedef std::chrono::high_resolution_clock  Clock;
    typedef std::chrono::time_point<Clock>      TimePoint;
    typedef Clock::duration                     Duration;

protected:
    mutable bool        fFirstTime;
    mutable TimePoint   fRawTimeZero;
    mutable bool        fResetSmooth;

    enum {
        kSmoothBuffLen = 10
    };
    double      fSmoothBuff[kSmoothBuffLen];
    int         fCurrSlot;

    float       fSysTimeScale;
    double      fRealSeconds;
    double      fSysSeconds;
    float       fDelSysSeconds;
    float       fFrameTimeInc;
    bool        fRunningFrameTime;
    float       fTimeClampSecs;
    float       fSmoothingClampSecs;
    bool        fClamping;


    template<typename T = double>
    T GetSeconds() const
    {
        typedef std::chrono::duration<T> duration_type;
        Duration d = GetRawTicks();
        return std::chrono::duration_cast<duration_type>(d).count();
    }

    template<typename T = double>
    T GetSeconds(uint64_t ticks) const
    {
        typedef std::chrono::duration<T> duration_type;
        Duration d(ticks);
        return std::chrono::duration_cast<duration_type>(d).count();
    }

    template<typename T = double>
    T GetMilliSeconds() const
    {
        typedef std::chrono::duration<T, std::milli> duration_type;
        Duration d = GetRawTicks();
        return std::chrono::duration_cast<duration_type>(d).count();
    }

    template<typename T = double>
    T GetMilliSeconds(uint64_t ticks) const
    {
        typedef std::chrono::duration<T, std::milli> duration_type;
        Duration d(ticks);
        return std::chrono::duration_cast<duration_type>(d).count();
    }

    uint64_t    GetTicks() const;

    float       GetDelSysSeconds() const { return fDelSysSeconds; }
    double      GetSysSeconds() const { return fSysSeconds; }
    double      IncSysSeconds();

    void        SetRealTime(bool realTime);
    bool        IsRealTime() const { return !fRunningFrameTime; }

    void        SetFrameTimeInc(float inc) { fFrameTimeInc = inc; }

    void        SetTimeScale(float s) { fSysTimeScale = s; }
    float       GetTimeScale() const { return fSysTimeScale; }

    void        SetTimeClamp(float secs) { fTimeClampSecs = secs; }
    void        SetSmoothingCap(float secs) { fSmoothingClampSecs = secs; }
    float       GetTimeClamp() const { return fTimeClampSecs; }
    bool        IsClamping() const { return fClamping; }

    friend class hsTimer;


private:
    Duration    GetRawTicks() const;


public:
    plTimerShare();
    ~plTimerShare();
};


class hsTimer
{
protected:
    static plTimerShare*            fTimer;


public:
    template<typename T = double>
    static T GetSeconds() { return fTimer->GetSeconds<T>(); }

    template<typename T = double>
    static T GetSeconds(uint64_t ticks) { return fTimer->GetSeconds<T>(ticks); }

    template<typename T = double>
    static T GetMilliSeconds() { return fTimer->GetMilliSeconds<T>(); }

    template<typename T = double>
    static T GetMilliSeconds(uint64_t ticks) { return fTimer->GetMilliSeconds<T>(ticks); }

    static uint64_t GetTicks() { return fTimer->GetTicks(); }

    static float    GetDelSysSeconds() { return fTimer->GetDelSysSeconds(); }
    static double   GetSysSeconds() { return fTimer->GetSysSeconds(); }

    static double   IncSysSeconds() { return fTimer->IncSysSeconds(); }

    static void     SetRealTime(bool realTime) { fTimer->SetRealTime(realTime); }
    static bool     IsRealTime() { return fTimer->IsRealTime(); }

    static void     SetFrameTimeInc(float inc) { fTimer->SetFrameTimeInc(inc); }

    static void     SetTimeScale(float s) { fTimer->SetTimeScale(s); }
    static float    GetTimeScale() { return fTimer->GetTimeScale(); }

    static void     SetTimeClamp(float secs) { fTimer->SetTimeClamp(secs); }
    static void     SetTimeSmoothingClamp(float secs) { fTimer->SetSmoothingCap(secs); }
    static float    GetTimeClamp() { return fTimer->GetTimeClamp(); }
    static bool     IsClamping() { return fTimer->IsClamping(); }

    //
    // Pass GetTheTimer() into other process space, and then call SetTheTimer() on it.
    static void             SetTheTimer(plTimerShare* timer);
    static plTimerShare*    GetTheTimer() { return fTimer; }
};



#endif