From 7998d53c3178e727b41ca505aee81ee9f149c687 Mon Sep 17 00:00:00 2001
From: Light3039 <VerodiciaTheNatureGoddess@gmail.com>
Date: Fri, 21 May 2021 20:33:37 +0430
Subject: [PATCH] Added Window

---
 Engine/premake5.lua                           |  1 +
 Engine/src/Engine/Core/Application.cpp        |  5 ++-
 Engine/src/Engine/Core/Application.h          | 16 ++++++--
 Engine/src/Engine/Core/Window.h               | 31 ++++++++++++++
 Engine/src/Engine/EntryPoint.h                |  1 +
 .../Engine/Platforms/OS/Windows/wWindow.cpp   | 41 +++++++++++++++++++
 .../src/Engine/Platforms/OS/Windows/wWindow.h | 31 ++++++++++++++
 7 files changed, 122 insertions(+), 4 deletions(-)
 create mode 100644 Engine/src/Engine/Core/Window.h
 create mode 100644 Engine/src/Engine/Platforms/OS/Windows/wWindow.cpp
 create mode 100644 Engine/src/Engine/Platforms/OS/Windows/wWindow.h

diff --git a/Engine/premake5.lua b/Engine/premake5.lua
index 50baf6b..8cd5c70 100644
--- a/Engine/premake5.lua
+++ b/Engine/premake5.lua
@@ -26,6 +26,7 @@ project "Engine"
 		"%{prj.location}/src/Engine/",
 
 		(dependenciesdir .. "spdlog/include/"),
+		(dependenciesdir .. "glfw/include/"),
 	}
 
 	links
diff --git a/Engine/src/Engine/Core/Application.cpp b/Engine/src/Engine/Core/Application.cpp
index 7e29721..b3ca33e 100644
--- a/Engine/src/Engine/Core/Application.cpp
+++ b/Engine/src/Engine/Core/Application.cpp
@@ -1,6 +1,7 @@
 #include "Application.h"
 
 #include "Logger.h"
+#include "Window.h"
 
 namespace Light {
 
@@ -8,6 +9,8 @@ namespace Light {
 	{
 		Logger::Initialize();
 
+		m_Window = std::unique_ptr<Window>(Window::Create({ "Title", 800u, 600u, false }));
+
 		LT_ENGINE_INFO("Initialized Logger");
 	}
 
@@ -17,7 +20,7 @@ namespace Light {
 
 	void Application::GameLoop()
 	{
-		while (true);
+		while (true) { m_Window->OnUpdate(); }
 	}
 
 }
\ No newline at end of file
diff --git a/Engine/src/Engine/Core/Application.h b/Engine/src/Engine/Core/Application.h
index 97ffe58..e6171c2 100644
--- a/Engine/src/Engine/Core/Application.h
+++ b/Engine/src/Engine/Core/Application.h
@@ -2,17 +2,27 @@
 
 #include "Base.h"
 
+#include <memory>
+
 namespace Light {
 
+	class Window;
+
 	class Application
 	{
+	private:
+		std::unique_ptr<Window> m_Window = nullptr;
+
 	public:
-		Application();
 		virtual ~Application();
 
 		void GameLoop();
+
+		// To be defined in client project
+		friend Application* CreateApplication();
+
+	protected:
+		Application();
 	};
 
-	Application* CreateApplication();
-
 }
\ No newline at end of file
diff --git a/Engine/src/Engine/Core/Window.h b/Engine/src/Engine/Core/Window.h
new file mode 100644
index 0000000..3d2659f
--- /dev/null
+++ b/Engine/src/Engine/Core/Window.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "Base.h"
+
+#include <string>
+
+namespace Light {
+
+	struct WindowProperties
+	{
+		std::string title;
+		unsigned int width, height;
+		bool vsync;
+	};
+
+	class Window
+	{
+	public:
+		virtual ~Window() = default;
+
+		virtual void OnUpdate() = 0;
+
+		virtual unsigned int GetHeight() = 0;
+		virtual unsigned int GetWidth()  = 0;
+
+		virtual inline void* GetNativeHandle() = 0;
+
+		static Window* Create(const WindowProperties& properties);
+	};
+
+}
\ No newline at end of file
diff --git a/Engine/src/Engine/EntryPoint.h b/Engine/src/Engine/EntryPoint.h
index dd72b8a..8c2b948 100644
--- a/Engine/src/Engine/EntryPoint.h
+++ b/Engine/src/Engine/EntryPoint.h
@@ -2,6 +2,7 @@
 
 #ifdef LT_PLATFORM_WINDOWS
 
+// To be defined in client project
 extern Light::Application* Light::CreateApplication();
 
 int main(int argc, char** argv)
diff --git a/Engine/src/Engine/Platforms/OS/Windows/wWindow.cpp b/Engine/src/Engine/Platforms/OS/Windows/wWindow.cpp
new file mode 100644
index 0000000..b1def44
--- /dev/null
+++ b/Engine/src/Engine/Platforms/OS/Windows/wWindow.cpp
@@ -0,0 +1,41 @@
+#include "wWindow.h"
+
+namespace Light {
+
+	Window* Window::Create(const WindowProperties& properties)
+	{
+		return new wWindow(properties);
+	}
+
+	wWindow::wWindow(const WindowProperties& properties)
+		: m_Properties(properties)
+	{
+		if (!glfwInit()) __debugbreak();
+
+		m_Handle = glfwCreateWindow(properties.width, properties.height, properties.title.c_str(), nullptr, nullptr);
+
+		glfwMakeContextCurrent(m_Handle);
+	}
+
+	wWindow::~wWindow()
+	{
+		glfwDestroyWindow(m_Handle);
+	}
+
+	void wWindow::OnUpdate()
+	{
+		glfwPollEvents();
+		glfwSwapBuffers(m_Handle);
+	}
+
+	unsigned int wWindow::GetWidth()
+	{
+		return m_Properties.width;
+	}
+
+	unsigned int wWindow::GetHeight()
+	{
+		return m_Properties.height;
+	}
+
+}
\ No newline at end of file
diff --git a/Engine/src/Engine/Platforms/OS/Windows/wWindow.h b/Engine/src/Engine/Platforms/OS/Windows/wWindow.h
new file mode 100644
index 0000000..286e9b7
--- /dev/null
+++ b/Engine/src/Engine/Platforms/OS/Windows/wWindow.h
@@ -0,0 +1,31 @@
+#pragma once
+
+#include "Base.h"
+
+#include "Core/Window.h"
+
+#include <GLFW/glfw3.h>
+
+#include <memory>
+
+namespace Light {
+
+	class wWindow : public Window
+	{
+	private:
+		GLFWwindow* m_Handle = nullptr;
+		WindowProperties m_Properties;
+	public:
+		wWindow(const WindowProperties& properties);
+
+		~wWindow();
+
+		virtual void OnUpdate() override;
+
+		virtual unsigned int GetWidth() override;
+		virtual unsigned int GetHeight() override;
+
+		virtual inline void* GetNativeHandle() override { return m_Handle; }
+	};
+
+}
\ No newline at end of file