From c3b6daefc9e7e60a6c2bee1b907e250f32adb16d Mon Sep 17 00:00:00 2001
From: Muzychenko Andrey <33288308+k4zmu2a@users.noreply.github.com>
Date: Sat, 2 Oct 2021 07:42:08 +0300
Subject: [PATCH] Added uncapped UPS option. Issue #18.

---
 SpaceCadetPinball/options.cpp | 2 ++
 SpaceCadetPinball/options.h   | 1 +
 SpaceCadetPinball/winmain.cpp | 9 ++++++++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/SpaceCadetPinball/options.cpp b/SpaceCadetPinball/options.cpp
index 4a9112c..3806b5b 100644
--- a/SpaceCadetPinball/options.cpp
+++ b/SpaceCadetPinball/options.cpp
@@ -74,6 +74,7 @@ void options::init()
 	Options.UpdatesPerSecond = std::min(MaxUps, std::max(MinUps, get_int("Updates Per Second", DefUps)));
 	Options.UpdatesPerSecond = std::max(Options.UpdatesPerSecond, Options.FramesPerSecond);
 	Options.ShowMenu = get_int("ShowMenu", true);
+	Options.UncappedUpdatesPerSecond = get_int("Uncapped Updates Per Second", false);
 
 	winmain::UpdateFrameRate();
 
@@ -104,6 +105,7 @@ void options::uninit()
 	set_int("Frames Per Second", Options.FramesPerSecond);
 	set_int("Updates Per Second", Options.UpdatesPerSecond);
 	set_int("ShowMenu", Options.ShowMenu);
+	set_int("Uncapped Updates Per Second", Options.UncappedUpdatesPerSecond);
 }
 
 
diff --git a/SpaceCadetPinball/options.h b/SpaceCadetPinball/options.h
index 004ad11..87c86cb 100644
--- a/SpaceCadetPinball/options.h
+++ b/SpaceCadetPinball/options.h
@@ -53,6 +53,7 @@ struct optionsStruct
 	int FramesPerSecond;
 	int UpdatesPerSecond;
 	bool ShowMenu;
+	bool UncappedUpdatesPerSecond;
 };
 
 struct ControlRef
diff --git a/SpaceCadetPinball/winmain.cpp b/SpaceCadetPinball/winmain.cpp
index 189724e..970aba9 100644
--- a/SpaceCadetPinball/winmain.cpp
+++ b/SpaceCadetPinball/winmain.cpp
@@ -269,7 +269,7 @@ int winmain::WinMain(LPCSTR lpCmdLine)
 			auto targetTimeDelta = TargetFrameTime - DurationMs(updateEnd - frameStart) - sleepRemainder;
 
 			TimePoint frameEnd;
-			if (targetTimeDelta > DurationMs::zero())
+			if (targetTimeDelta > DurationMs::zero() && !options::Options.UncappedUpdatesPerSecond)
 			{
 				std::this_thread::sleep_for(targetTimeDelta);
 				frameEnd = Clock::now();
@@ -459,6 +459,7 @@ void winmain::RenderUi()
 				                 "%.2f", ImGuiSliderFlags_AlwaysClamp);
 				ImGui::Separator();
 
+				char buffer[80]{};
 				auto changed = false;
 				if (ImGui::MenuItem("Set Default UPS/FPS"))
 				{
@@ -480,6 +481,12 @@ void winmain::RenderUi()
 					options::Options.UpdatesPerSecond = std::max(options::Options.UpdatesPerSecond,
 					                                             options::Options.FramesPerSecond);
 				}
+				snprintf(buffer, sizeof buffer - 1, "Uncapped UPS (FPS ratio %02.02f)", UpdateToFrameRatio);
+				if (ImGui::MenuItem(buffer, nullptr, options::Options.UncappedUpdatesPerSecond))
+				{
+					options::Options.UncappedUpdatesPerSecond ^= true;
+				}
+
 				if (changed)
 				{
 					UpdateFrameRate();