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Source/Core/VUI.cppm

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+module;
+#include <cstdint>
+
+export module VUI:Time;
+
+import :TimeInternal;
+
+static uint64_t s_TimerOffset{0};
+static double s_LastTime{0};
+static double s_DeltaTime{0};
+
+namespace VUI {
+export double GetDeltaTime() { return s_DeltaTime; };
+export double GetTime() {
+  return static_cast<double>(GetTimerValue() - s_TimerOffset) /
+         static_cast<double>(GetTimerFrequency());
+};
+export uint64_t GetTimeNs() {
+  return static_cast<uint64_t>(
+      static_cast<double>(GetTimerValue() - s_TimerOffset) * 1e9 /
+      static_cast<double>(GetTimerFrequency()));
+}
+export void SetTime(const uint64_t time) {
+  const auto dTimerValue = static_cast<double>(GetTimerValue());
+  const auto dTime = static_cast<double>(time);
+  const auto dFrequency = static_cast<double>(GetTimerFrequency());
+  s_TimerOffset = static_cast<uint64_t>(dTimerValue - dTime * dFrequency);
+};
+export uint64_t GetTimeOffset() { return s_TimerOffset; }
+
+export void UpdateDeltaTime() {
+  const auto time = GetTime();
+  s_DeltaTime = time - s_LastTime;
+  s_LastTime = time;
+};
+} // namespace VUI