Implement fixed frame rate.

ASxa86 · Jun 11, 2024 · 21c9a1e · 21c9a1e
1 parent 46c6409
commit 21c9a1e
Show file tree

Hide file tree

Showing 3 changed files with 15 additions and 4 deletions.
diff --git a/app/aspire/main.cpp b/app/aspire/main.cpp
@@ -24,7 +24,7 @@ auto main() -> int
 	auto rect = std::make_unique<aspire::scene::Rectangle>();
 	rect->setPosition({80, 80});
 	rect->setSize({64, 64});
-	rect->onFrame(
+	rect->onFrameFixed(
 		[r = rect.get()]
 		{
 			auto pos = r->getPosition();
@@ -37,7 +37,7 @@ auto main() -> int
 	subrect->setColor(sf::Color::Red);
 	subrect->setRotation(30);
 
-	subrect->onFrame(
+	subrect->onFrameFixed(
 		[s = subrect.get()]
 		{
 			auto rot = s->getRotation();

diff --git a/include/aspire/core/Kernel.h b/include/aspire/core/Kernel.h
@@ -9,6 +9,7 @@ namespace aspire::core
 	class ASPIRE_CORE_EXPORT Kernel : public Object
 	{
 	public:
+		static constexpr std::chrono::milliseconds FrameFixedRate{100};
 		static auto Instance() -> Kernel*;
 
 		Kernel();

diff --git a/src/core/Kernel.cpp b/src/core/Kernel.cpp
@@ -17,6 +17,7 @@ struct Kernel::Impl
 	std::mutex mutexEvent;
 	std::chrono::steady_clock::time_point start;
 	std::chrono::steady_clock::duration elapsed{};
+	std::chrono::steady_clock::duration accumulate{};
 	static inline Kernel* Instance{nullptr};
 	bool running{false};
 };
@@ -78,7 +79,9 @@ auto Kernel::run() -> int
 	{
 		const auto frameStart = std::chrono::steady_clock::now();
 
-		this->pimpl->elapsed += std::chrono::steady_clock::now() - this->pimpl->start;
+		const auto elapsed = std::chrono::steady_clock::now() - this->pimpl->start;
+		this->pimpl->elapsed += elapsed;
+		this->pimpl->accumulate += elapsed;
 
 		{
 			std::scoped_lock lock(this->pimpl->mutexEvent);
@@ -89,7 +92,14 @@ auto Kernel::run() -> int
 			}
 		}
 
-		this->pimpl->frameFixed();
+		auto count = 0;
+
+		while(this->pimpl->accumulate > Kernel::FrameFixedRate && count < 5)
+		{
+			this->pimpl->accumulate -= Kernel::FrameFixedRate;
+			this->pimpl->frameFixed();
+			count++;
+		}
 
 		this->pimpl->frame();