TimeStep.cpp

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/**
* @file TimeStep.cpp.
* @brief The TimeStep Class Implementation.
* @author Spices.
*/
 
#include "Pchheader.h"
#include "TimeStep.h"
 
namespace Spices {
 
    TimeStep::TimeStep()
        : m_FrameTime(0.0f)
        , m_GameTime(0.0f)
        , m_Frames(0)
    {
        SPICES_PROFILE_ZONE;
 
        /**
        * @brief Init GameTime and FrameTime.
        */
        m_StartTime = std::chrono::high_resolution_clock::now();
        m_LastTime  = std::chrono::high_resolution_clock::now();
    }
 
    void TimeStep::Flush()
    {
        SPICES_PROFILE_ZONE;
 
        /**
        * @brief Recording the current time.
        */
        const auto nowTime = std::chrono::high_resolution_clock::now();
 
        /**
        * @brief Calculate frmae time.
        */
        m_FrameTime = std::chrono::duration<float, std::chrono::seconds::period>(nowTime - m_LastTime).count();
 
        /**
        * @brief Calculate game time.
        */
        m_GameTime = std::chrono::duration<float, std::chrono::seconds::period>(nowTime - m_StartTime).count();
 
        /**
        * @brief Setting current time.
        */
        m_LastTime = nowTime;
 
        /**
        * @brief Update frames.
        */
        ++m_Frames;
        m_Frames %= UINT64_MAX;
    }
}