.. _program_listing_file_PrismEngine_src_timeSystem.cpp:

Program Listing for File timeSystem.cpp
=======================================

|exhale_lsh| :ref:`Return to documentation for file <file_PrismEngine_src_timeSystem.cpp>` (``PrismEngine/src/timeSystem.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include "timeSystem.h"
   #include "timeResource.h"
   #include <chrono>
   
   void prism::scene::TimeSystem::start()
   {
       lastTime = std::chrono::steady_clock::now();
   }
   
   void prism::scene::TimeSystem::update()
   {
       auto currentTime = std::chrono::steady_clock::now();
       double_t deltaTime = std::chrono::duration<double_t>(currentTime - lastTime).count();
       lastTime = currentTime;
   
       TimeResource* time = scene->getResource<TimeResource>();
       if (!time) return;
   
       time->update(deltaTime);
   }