Initial late commit

open_engine/src/open_engine/application.cpp

@@ -0,0 +1,84 @@
+#include <pch.hpp>
+
+#include <core.hpp>
+#include <events/application_event.hpp>
+#include <imgui/imgui_layer.hpp>
+#include <core/time.hpp>
+#include <renderer/renderer.hpp>
+#include <application.hpp>
+#include <input/input_system.hpp>
+
+#include <imgui.h>
+
+namespace OpenEngine {
+
+    Application::Application()
+    {
+        OE_CORE_ASSERT(!instance, "Application already exists!");
+        instance = this;
+
+        window = std::unique_ptr<Window>(Window::Create());
+        window->SetEventCallback(BIND_EVENT_FN(Application::OnEvent));
+
+        Renderer::Init();
+
+        imgui_layer = new ImGuiLayer();
+        PushOverlay(imgui_layer);
+    }
+
+    void Application::Run()
+    {
+        while(running) {
+            Time::Get().Update();
+
+            for (Layer* layer : layer_stack)
+                layer->OnUpdate();
+
+            imgui_layer->Begin();
+
+            for (Layer* layer : layer_stack)
+                layer->OnImGuiRender();
+
+            imgui_layer->End();
+
+            window->OnUpdate();
+        }
+    }
+
+    void Application::OnEvent(Event& event)
+    {
+        EventDispatcher dispatcher(event);
+        dispatcher.Dispatch<WindowCloseEvent>(BIND_EVENT_FN(Application::OnWindowClose));
+        dispatcher.Dispatch<WindowResizeEvent>(BIND_EVENT_FN(Application::OnWindowResize));
+
+        for (auto it = layer_stack.end(); it != layer_stack.begin();) {
+            (*--it)->OnEvent(event);
+            if (event.handled)
+                break;
+        }
+    }
+
+    bool Application::OnWindowClose(WindowCloseEvent& event)
+    {
+        running = false;
+
+        return true;
+    }
+
+    bool Application::OnWindowResize(WindowResizeEvent& event)
+    {
+        Renderer::OnWindowResize(event.GetWidth(), event.GetHeight());
+
+        return false;
+    }
+
+    void Application::PushLayer(Layer* layer)
+    {
+        layer_stack.PushLayer(layer);
+    }
+
+    void Application::PushOverlay(Layer* overlay)
+    {
+        layer_stack.PushOverlay(overlay);
+    }
+}