- Fixed bug in builder when no content files exist

Nerfed.Editor/Editor/EditorGui.cs

@@ -0,0 +1,71 @@
+using ImGuiNET;
+using Nerfed.Runtime;
+using Nerfed.Runtime.Graphics;
+using Nerfed.Runtime.Gui;
+
+namespace Nerfed.Editor
+{
+    internal static class EditorGui
+    {
+        private static GuiController guiController;
+
+        internal static void Initialize()
+        {
+            // Create GuiController.
+            guiController = new GuiController(Engine.GraphicsDevice, Engine.MainWindow, Color.DimGray);
+            // Subscribe to GUI update.
+            // GuiController.OnGui call => UpdateDock;
+            // GuiController.OnGui call => UpdateEditorWindows;
+            // GuiController.OnGui call => ...;
+            guiController.OnGui += HandleOnGui;
+        }
+
+        internal static void Update()
+        {
+            // Update GuiController.
+            guiController.Update(Engine.Timestep.TotalSeconds);
+        }
+
+        internal static void Render()
+        {
+            // Reneder GuiController.
+            guiController.Render();
+        }
+
+        internal static void Quit()
+        {
+            guiController.Dispose();
+        }
+
+        private static void UpdateDock()
+        {
+            // Setup default dockspace for the main window.
+            uint id = ImGui.GetID("MainDockSpace");
+            ImGui.DockSpaceOverViewport(id, ImGui.GetMainViewport(), ImGuiDockNodeFlags.None);
+        }
+
+        private static void UpdateMainMenu()
+        {
+            if (ImGui.BeginMainMenuBar())
+            {
+                if (ImGui.BeginMenu("File"))
+                {
+                    if (ImGui.MenuItem("Exit"))
+                    {
+                        Engine.Quit();
+                    }
+                    ImGui.EndMenu();
+                }
+                ImGui.EndMainMenuBar();
+            }
+        }
+
+        private static void HandleOnGui()
+        {
+            UpdateMainMenu();
+            UpdateDock();
+
+            ImGui.ShowDemoWindow();
+        }
+    }
+}