Added FPS cap, added Optimus support, and removed showWindow requirement

Game/src/Game.cpp

@@ -11,7 +11,6 @@ int main(int argc, char* argv[]) {
 	//app.setWindowIcon(...);
 	// app.setWindowCursor(...);
 	//Create game states, load some assets, launch loop that continually updates and renders the current state and switches states when appropriate.
-	app.showWindow(true);
 	app.startLoop();
 
 	return 0;

NothinFancy/src/Application.cpp

@@ -5,6 +5,10 @@
 #include "GL\wglew.h"
 #endif
 
+extern "C" {
+	_declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
+}
+
 namespace nf {
 	DEBUGINIT;
 
@@ -22,7 +26,7 @@ namespace nf {
 
 		m_window = CreateWindowEx(NULL, m_wclassName, toWide(m_currentConfig.title), WS_OVERLAPPED | WS_SYSMENU | WS_MINIMIZEBOX, CW_USEDEFAULT, CW_USEDEFAULT, 1280, windowSize.bottom, NULL, NULL, m_hInst, NULL);
 		SetProp(m_window, L"App", this);
-		if(m_currentConfig.fullscreen) toggleFullscreen();
+		if (m_currentConfig.fullscreen) toggleFullscreen();
 
 		createOpenGLContext();
 	}
@@ -37,10 +41,16 @@ namespace nf {
 	}
 
 	void Application::startLoop() {
+		showWindow(true);
 		m_running = true;
 		MSG msg = { };
 		while (m_running) {
-			//TODO: FPS and delta timing
+			//TODO: delta timing
+
+			m_fpsDuration = std::chrono::steady_clock::now() - m_frameClock;
+
+			if (m_fpsDuration.count() >= m_minFrametime) {
+				m_deltaTime = m_fpsDuration.count();
 				while (PeekMessage(&msg, NULL, NULL, NULL, PM_REMOVE)) {
 					TranslateMessage(&msg);
 					DispatchMessage(&msg);
@@ -50,8 +60,18 @@ namespace nf {
 				glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
 				glClear(GL_COLOR_BUFFER_BIT);
 				SwapBuffers(m_hdc);
+				m_frames++;
+				m_frameClock = std::chrono::steady_clock::now();
 				//TODO: Update and render current state
 			}
+			m_fpsClock2 = std::chrono::steady_clock::now();
+			m_fpsDuration = m_fpsClock2 - m_fpsClock1;
+			if (m_fpsDuration.count() >= 1.0) {
+				m_fpsClock1 = std::chrono::steady_clock::now();
+				m_FPS = m_frames;
+				m_frames = 0;
+			}
+		}
 	}
 
 	void Application::showWindow(bool show) {
@@ -65,6 +85,10 @@ namespace nf {
 		return m_currentConfig;
 	}
 
+	int Application::getFPS() {
+		return m_FPS;
+	}
+
 	void Application::registerWindowClass() {
 		m_wclassName = L"NFClass";
 		WNDCLASS wclass = { };
@@ -172,7 +196,7 @@ namespace nf {
 		wglDeleteContext(m_hglrc);
 		m_hglrc = wglCreateContextAttribsARB(m_hdc, NULL, attrib);
 		wglMakeCurrent(m_hdc, m_hglrc);
-		Log((char*)glGetString(GL_VERSION));
+		Log("OpenGL version: " + std::string((char*)glGetString(GL_VERSION)));
 		GLuint vao;
 		glGenVertexArrays(1, &vao);
 		glBindVertexArray(vao);

NothinFancy/src/Utility.cpp

@@ -16,6 +16,16 @@ namespace nf {
 		std::printf("[%.4f] Debug: %s\n", time.count(), in.c_str());
 	}
 
+	void Debug::LogImp(int in) {
+		std::chrono::duration<float> time = getCurrentTime();
+		std::printf("[%.4f] Debug: %i\n", time.count(), in);
+	}
+
+	void Debug::LogImp(double in) {
+		std::chrono::duration<float> time = getCurrentTime();
+		std::printf("[%.4f] Debug: %.4f\n", time.count(), in);
+	}
+
 	void Debug::ErrorImp(const char* in, const char* filename, int line) {
 		std::chrono::duration<float> time = getCurrentTime();
 		HANDLE cmd = GetStdHandle(STD_OUTPUT_HANDLE);

NothinFancy/src/include/Application.h

@@ -1,6 +1,8 @@
 #pragma once
 #include "Config.h"
 #include <Windows.h>
+#include <chrono>
+#include <vector>
 
 namespace nf {
 	class Application {
@@ -14,6 +16,7 @@ namespace nf {
 		void startLoop();
 		void showWindow(bool show);
 		Config& getConfig();
+		int getFPS();
 
 		~Application();
 	private:
@@ -33,5 +36,17 @@ namespace nf {
 		WINDOWPLACEMENT m_wndPlacement;
 		HDC m_hdc;
 		HGLRC m_hglrc;
+
+		std::chrono::steady_clock::time_point m_frameClock = std::chrono::steady_clock::now();
+		std::chrono::duration<double> m_fpsDuration;
+		double m_deltaTime;
+		std::chrono::steady_clock::time_point m_fpsClock1 = m_frameClock;
+		std::chrono::steady_clock::time_point m_fpsClock2 = m_frameClock;
+		int m_frames;
+		const int m_targetFPS = 60;
+		const double m_minFrametime = 1.0 / m_targetFPS;
+		int m_FPS;
+
+		
 	};
 }

NothinFancy/src/include/Utility.h

@@ -21,6 +21,8 @@ DebugBreak();
 	public:
 		static void LogImp(const char* in);
 		static void LogImp(const std::string& in);
+		static void LogImp(int in);
+		static void LogImp(double in);
 		static void ErrorImp(const char* in, const char* filename, int line);
 	};
 #else