Initial commit.

samples/Common/TimeSystem.h

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <chrono>
+#include <atomic>
+
+//--- Time System ---//
+class TimeSystem
+{
+public:
+	template <typename... Args>
+	static void Create(Args&&... args)
+	{
+		s_timeSys = new TimeSystem(std::forward<Args>(args)...);
+	}
+	static void UpdateTime()
+	{
+		s_timeSys->_UpdateTime();
+	}
+	static auto GetTimeSince(double in_time)
+	{
+		return s_timeSys->_GetTimeSince(in_time);
+	}
+	static auto GetTime()
+	{
+		return s_timeSys->_GetTime();
+	}
+
+private:
+	TimeSystem()
+	{
+		m_startTimePoint = std::chrono::steady_clock::now();
+	}
+	void _UpdateTime()
+	{
+		std::chrono::steady_clock::time_point curTimePoint = std::chrono::steady_clock::now();
+		std::chrono::duration<double> span = std::chrono::duration_cast<std::chrono::duration<double>>(curTimePoint - m_startTimePoint);
+		m_time = span.count();
+	}
+	double _GetTimeSince(double in_time) const
+	{
+		return m_time - in_time;
+	}
+	double _GetTime() const
+	{
+		return m_time;
+	}
+
+	std::chrono::steady_clock::time_point m_startTimePoint;
+	std::atomic<double> m_time;
+	static TimeSystem* s_timeSys;
+};
+TimeSystem* TimeSystem::s_timeSys;