From 66427b09342a9660b61d790779a5c6377ecf8c3d Mon Sep 17 00:00:00 2001
From: Rick van Vonderen <0945444@hr.nl>
Date: Mon, 16 Dec 2019 17:47:22 +0100
Subject: [PATCH] Implement application events

---
 inferno/src/inferno/application.cpp | 64 +++++++++++++++--------------
 inferno/src/inferno/application.h   | 23 +++++++----
 2 files changed, 49 insertions(+), 38 deletions(-)

diff --git a/inferno/src/inferno/application.cpp b/inferno/src/inferno/application.cpp
index 555c611..4a1be78 100644
--- a/inferno/src/inferno/application.cpp
+++ b/inferno/src/inferno/application.cpp
@@ -1,12 +1,14 @@
-#include <cstdio> // printf
+#include <memory> // unique_ptr
 
 #include <glad/glad.h>
 #include <GLFW/glfw3.h>
 
 #include "inferno/application.h"
 #include "inferno/core.h"
+#include "inferno/event/applicationevent.h"
 #include "inferno/event/event.h"
 #include "inferno/log.h"
+#include "inferno/window.h"
 
 namespace Inferno {
 
@@ -24,47 +26,49 @@ namespace Inferno {
 
 	void Application::run()
 	{
-		NF_CORE_LOG("Startup!");
+		NF_CORE_LOG("Application startup!");
 
-		Event event;
+		m_window = std::make_unique<Window>();
+		m_window->setEventCallback(NF_BIND_EVENT(Application::onEvent));
 
-		glfwInit();
-		glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 4);
-		glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
-		glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-		glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
+		while(!glfwWindowShouldClose(m_window->getWindow())) {
 
-		GLFWwindow* window = glfwCreateWindow(1280, 720, "Inferno", NULL, NULL);
-		if (window == NULL) {
-			NF_CORE_DANGER("Failed to create GLFW window");
-			glfwTerminate();
-			return;// -1;
-		}
-		glfwMakeContextCurrent(window);
+			if(glfwGetKey(m_window->getWindow(), GLFW_KEY_ESCAPE) == GLFW_PRESS) {
+				glfwSetWindowShouldClose(m_window->getWindow(), GL_TRUE);
+			}
+
+			glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+			glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
-		if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
-			NF_CORE_DANGER("Failed to initialize GLAD");
-			return;// -1;
+			m_window->update();
 		}
 
-		glViewport(0, 0, 1280, 720);
+		NF_CORE_LOG("Application shutdown!");
+	}
 
-		while(!glfwWindowShouldClose(window)) {
+	void Application::onEvent(Event &e)
+	{
+		EventDispatcher dispatcher(e);
+		dispatcher.dispatch<WindowCloseEvent>(NF_BIND_EVENT(Application::onWindowClose));
+		dispatcher.dispatch<WindowResizeEvent>(NF_BIND_EVENT(Application::onWindowResize));
+	}
 
-			if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
-				glfwSetWindowShouldClose(window, GL_TRUE);
-			}
+	bool Application::onWindowClose(WindowCloseEvent &e)
+	{
+		(void)e;
+		NF_CORE_INFO("WindowCloseEvent triggered");
 
-			glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
-			glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+		glfwSetWindowShouldClose(m_window->getWindow(), GL_TRUE);
 
-			glfwPollEvents();
-			glfwSwapBuffers(window);
-		}
+		return true;
+	}
 
-		glfwTerminate();
+	bool Application::onWindowResize(WindowResizeEvent &e)
+	{
+		(void)e;
+		NF_CORE_INFO("WindowResizeEvent %dx%d triggered", e.getWidth(), e.getHeight());
 
-		NF_CORE_LOG("Shutdown!");
+		return true;
 	}
 
 }
diff --git a/inferno/src/inferno/application.h b/inferno/src/inferno/application.h
index ff690b4..3093fe2 100644
--- a/inferno/src/inferno/application.h
+++ b/inferno/src/inferno/application.h
@@ -1,8 +1,15 @@
 #ifndef APPLICATION_H
 #define APPLICATION_H
 
+#include <memory> // unique_ptr
+
 namespace Inferno {
 
+	class Event;
+	class WindowCloseEvent;
+	class WindowResizeEvent;
+	class Window;
+
 	class Application
 	{
 	public:
@@ -11,9 +18,17 @@ namespace Inferno {
 
 		void run();
 
+		void onEvent(Event &e);
+		bool onWindowClose(WindowCloseEvent &e);
+		bool onWindowResize(WindowResizeEvent &e);
+
+// -----------------------------------------
+
 		static inline Application &get() { return *s_instance; }
 
 	private:
+		std::unique_ptr<Window> m_window;
+
 		static Application* s_instance;
 	};
 
@@ -23,11 +38,3 @@ namespace Inferno {
 }
 
 #endif // APPLICATION_H
-
-// @Todo
-// v Application -> Singleton
-// v Add assert
-// - Event class
-// - Event Dispatcher
-//   - template
-// - Implement event in Application::OnEvent(Event& e);