Added stub Clock to replace Game built-in

3 files changed, 54 insertions, 0 deletions

diff --git a/Stars45/CMakeLists.txt b/Stars45/CMakeLists.txt
index 0376b00..7247082 100644
--- a/Stars45/CMakeLists.txt
+++ b/Stars45/CMakeLists.txt
@@ -31,6 +31,7 @@ add_executable(
 	CampaignSaveGame.cpp
 	CampaignSituationReport.cpp
 	CarrierAI.cpp
+	Clock.cpp
 	CmdDlg.cpp
 	CmdForceDlg.cpp
 	CmdIntelDlg.cpp
diff --git a/Stars45/Clock.cpp b/Stars45/Clock.cpp
new file mode 100644
index 0000000..6e3ec3f
--- /dev/null
+++ b/Stars45/Clock.cpp
@@ -0,0 +1,26 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+*/
+
+#include "Clock.h"
+
+#include <chrono>
+
+
+Clock::Clock() :
+    m_point {inner_clock::now()},
+    m_compression {1.0}
+{
+}
+
+
+double
+Clock::Step()
+{
+    const auto next = inner_clock::now();
+    const std::chrono::duration<double> delta = next - m_point;
+    m_point = next;
+    return delta.count() * m_compression;
+}
diff --git a/Stars45/Clock.h b/Stars45/Clock.h
new file mode 100644
index 0000000..e82315a
--- /dev/null
+++ b/Stars45/Clock.h
@@ -0,0 +1,27 @@
+/*  Starshatter: The Open Source Project
+    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
+    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
+    Copyright (c) 1997-2006, Destroyer Studios LLC.
+*/
+
+#ifndef Clock_h
+#define Clock_h
+
+#include <chrono>
+
+
+class Clock
+{
+public:
+    Clock();
+
+    double Step();
+
+protected:
+    using inner_clock = std::chrono::high_resolution_clock;
+    inner_clock::time_point m_point;
+    double m_compression;
+};
+
+
+#endif  // Clock_h