Added in frame timestep, should be used in some way with scalers to generate rates

NavProject/src/SPSInputLayer.cpp

@@ -39,7 +39,7 @@ namespace Navigator {
 
 	void SPSInputLayer::OnDetach() {}
 
-	void SPSInputLayer::OnUpdate() {}
+	void SPSInputLayer::OnUpdate(Timestep& step) {}
 
 	void SPSInputLayer::OnEvent(Event& event) {}
 

NavProject/src/SPSInputLayer.h

@@ -27,7 +27,7 @@ namespace Navigator {
 
 		virtual void OnAttach() override;
 		virtual void OnDetach() override;
-		virtual void OnUpdate() override;
+		virtual void OnUpdate(Timestep& step) override;
 		virtual void OnEvent(Event& event) override; //If you want to respond to events
 		virtual void OnImGuiRender() override; //"Main" function
 

Navigator/src/Navigator/Core/Application.cpp

@@ -11,6 +11,7 @@
 #include "Application.h"
 #include "Navigator/Renderer/RenderCommand.h"
 #include "Navigator/Editor/EditorLayer.h"
+#include "Timestep.h"
 
 namespace Navigator {
 
@@ -77,13 +78,22 @@ namespace Navigator {
 	void Application::Run()
 	{
 		NAV_PROFILE_FUNCTION();
+
+		float lastFrameTime = 0;
+		float time;
+		Timestep step;
+
 		while(m_runFlag)
 		{
 			RenderCommand::SetClearColor(m_bckgnd_color);
 			RenderCommand::Clear();
 
+			time = RenderCommand::GetFrameTime();
+			step.SetTime(time - lastFrameTime);
+			lastFrameTime = time;
+
 			for(auto layer : m_stack)
-				layer->OnUpdate();
+				layer->OnUpdate(step);
 
 			m_imgui_layer->Begin();
 			for(auto layer : m_stack)

Navigator/src/Navigator/Core/Layer.h

@@ -9,6 +9,7 @@
 
 #include "NavCore.h"
 #include "Navigator/Events/Event.h"
+#include "Timestep.h"
 
 namespace Navigator {
 
@@ -21,7 +22,7 @@ namespace Navigator {
 		virtual void OnAttach() {}
 		virtual void OnDetach() {}
 		virtual void OnImGuiRender() {}
-		virtual void OnUpdate() {}
+		virtual void OnUpdate(Timestep& step) {}
 		virtual void OnEvent(Event& event) {}
 
 		inline const std::string& GetName() { return m_name; }

Navigator/src/Navigator/Core/Timestep.h

@@ -0,0 +1,25 @@
+#ifndef TIMESTEP_H
+#define TIMESTEP_H
+
+namespace Navigator {
+
+	class Timestep
+	{
+	public:
+		Timestep(float time=0.0f) :
+			m_time(time)
+		{
+		}
+
+		void SetTime(float time) { m_time = time; }
+
+		operator float() { return m_time; }
+
+		float GetElapsedSeconds() const { return m_time; }
+		float GetElapsedMilliseconds() const { return m_time * 1000.0f; }
+	private:
+		float m_time;
+	};
+}
+
+#endif

Navigator/src/Navigator/Editor/EditorLayer.cpp

@@ -38,7 +38,7 @@ namespace Navigator {
     {
     }
 
-    void EditorLayer::OnUpdate()
+    void EditorLayer::OnUpdate(Timestep& step)
     {
     }
 

Navigator/src/Navigator/Editor/EditorLayer.h

@@ -33,7 +33,7 @@ namespace Navigator {
         virtual void OnAttach() override;
         virtual void OnDetach() override;
         virtual void OnImGuiRender() override;
-        virtual void OnUpdate() override;
+        virtual void OnUpdate(Timestep& step) override;
         virtual void OnEvent(Event& event) override;
 
 

Navigator/src/Navigator/Physics/PhysicsLayer.cpp

@@ -87,7 +87,7 @@ namespace Navigator {
 		m_physStack.PushStage(stage);
 	}
 
-	void PhysicsLayer::OnUpdate() {}
+	void PhysicsLayer::OnUpdate(Timestep& step) {}
 
 	/*Threaded functions*/
 

Navigator/src/Navigator/Physics/PhysicsLayer.h

@@ -31,7 +31,7 @@ namespace Navigator {
 		virtual ~PhysicsLayer();
 
 		virtual void OnAttach() override;
-		virtual void OnUpdate() override;
+		virtual void OnUpdate(Timestep& step) override;
 		virtual void OnDetach() override;
 		virtual void OnImGuiRender() override {};
 		virtual void OnEvent(Event& event) override;

Navigator/src/Navigator/Renderer/RenderCommand.h

@@ -18,6 +18,7 @@ namespace Navigator {
 	public:
 		inline static void SetClearColor(const glm::vec4& color_array) { s_api->SetClearColor(color_array); }
 		inline static void Clear() { s_api->Clear(); }
+		inline static float GetFrameTime() { return s_api->GetFrameTime(); }
 
 	private:
 		static RendererAPI* s_api;

Navigator/src/Navigator/Renderer/RendererAPI.h

@@ -24,6 +24,7 @@ namespace Navigator {
 
 		virtual void Clear() = 0;
 		virtual void SetClearColor(const glm::vec4& color) = 0;
+		virtual float GetFrameTime() = 0;
 
 		inline static API GetAPI() { return s_api; }
 

Navigator/src/Navigator/Utils/TestServerLayer.cpp

@@ -314,7 +314,7 @@ namespace Navigator {
 	}
 
 	//Tell to write, then poll actions
-	void TestServerLayer::OnUpdate()
+	void TestServerLayer::OnUpdate(Timestep& step)
 	{
 		m_connection->Start();
 		m_context.poll();

Navigator/src/Navigator/Utils/TestServerLayer.h

@@ -66,7 +66,7 @@ namespace Navigator {
 
 		virtual void OnAttach() override;
 		virtual void OnDetach() override;
-		virtual void OnUpdate() override;
+		virtual void OnUpdate(Timestep& step) override;
 
 	private:
 		asio::io_context m_context;

Navigator/src/Platform/OpenGL/OpenGLRendererAPI.cpp

@@ -8,6 +8,7 @@
 #include "OpenGLRendererAPI.h"
 
 #include "glad/glad.h"
+#include "GLFW/glfw3.h"
 
 namespace Navigator {
 
@@ -20,4 +21,9 @@ namespace Navigator {
 	{
 		glClearColor(color_array[0], color_array[1], color_array[2], color_array[3]);
 	}
+
+	float OpenGLRendererAPI::GetFrameTime()
+	{
+		return (float)glfwGetTime();
+	}
 }

Navigator/src/Platform/OpenGL/OpenGLRendererAPI.h

@@ -18,6 +18,7 @@ namespace Navigator {
 	public:
 		virtual void Clear() override;
 		virtual void SetClearColor(const glm::vec4& color_array) override;
+		virtual float GetFrameTime() override;
 	};
 
 }