added imgui and fmt, started working on ui

src/main.cpp

@@ -12,6 +12,9 @@
 #define STB_IMAGE_IMPLEMENTATION
 #include "Components.h"
 #include "FreeCamera.h"
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl3.h"
 #include "InputManager.h"
 #include "stb_image.h"
 
@@ -23,9 +26,11 @@
 #include "Texture.h"
 #include "TextureManager.h"
 
+#include "fmt/base.h"
+
 GLFWwindow* gWindow = nullptr;
-int gWindowWidth = 800;
-int gWindowHeight = 600;
+int gWindowWidth = 1920;
+int gWindowHeight = 1080;
 
 int glVersionMajor = 0;
 int glVersionMinor = 0;
@@ -45,12 +50,14 @@ void glfw_framebuffer_size_callback(GLFWwindow* window, int width, int height);
 void init_glfw();
 void create_main_window();
 void load_gl();
+void load_imgui();
 void init_camera();
 void load_default_textures();
 void load_shaders();
 void load_inputs();
 void load_default_models();
 void loop();
+void draw_ui();
 
 auto xAxis = glm::vec3{1.f, 0.f, 0.f};
 auto yAxis = glm::vec3{0.f, 1.f, 0.f};
@@ -65,6 +72,8 @@ int main() {
 
     load_gl();
 
+    load_imgui();
+
     init_camera();
 
     stbi_set_flip_vertically_on_load(true);
@@ -84,6 +93,9 @@ int main() {
     diffuse = {0.5f, 0.5f, 0.5f};
     specular = {1.0f, 1.0f, 1.0f};
 
+    auto& tag = gScene.fetch_component<Components::Tag>(dirLight);
+    tag.name = "directional light";
+
     loop();
 
     ShaderManager::shaders.clear();
@@ -159,6 +171,15 @@ void load_gl()
     glEnable(GL_MULTISAMPLE);
 }
 
+void load_imgui() {
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+
+    ImGui::StyleColorsDark();
+    ImGui_ImplGlfw_InitForOpenGL(gWindow, true);
+    ImGui_ImplOpenGL3_Init("#version 330");
+}
+
 void init_camera() {
     gCamera = {{5.f, 5.f, 5.f}, 0, 0, gAspectRatio};
     gCamera.rotate_yaw(-135.f);
@@ -241,10 +262,14 @@ void loop() {
             gCamera.move(DOWN, .05);
         }
 
+        draw_ui();
+
         // gl frame prep
         glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+
         const auto shader = ShaderManager::shaders["phong_shader"];
         shader->bind();
         shader->setMat4("projection", gCamera.projection());
@@ -259,4 +284,53 @@ void loop() {
         // gl end frame stuff
         glfwSwapBuffers(gWindow);
     }
+}
+
+void draw_ui() {
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplGlfw_NewFrame();
+    ImGui::NewFrame();
+    {
+        if (ImGui::Begin("Scene")) {
+            ImGui::Text("Scene");
+            const auto root = gScene.get_root();
+            auto entity = gScene.fetch_component<Components::Relationship>(root).first_child;
+            while (entity != entt::null) {
+                const auto&[name] = gScene.fetch_component<Components::Tag>(entity);
+                std::string text = fmt::format("    {0}", name);
+                ImGui::Text((char*)text.data());
+                entity = gScene.fetch_component<Components::Relationship>(entity).next_sibling;
+            }
+            ImGui::End();
+        }
+
+        if (ImGui::BeginMainMenuBar()) {
+            if (ImGui::BeginMenu("File")) {
+                if (ImGui::MenuItem("New Scene", "Ctrl+N")) {
+                    /* Handle New File logic */
+                }
+                if (ImGui::MenuItem("Open Scene", "Ctrl+O")) {
+                    /* Handle Open logic */
+                }
+                ImGui::Separator(); // Adds a visual line between sections
+                if (ImGui::MenuItem("Save", "Ctrl+S")) {
+                    /* Handle Save logic */
+                }
+                if (ImGui::MenuItem("Exit", "Alt+F4")) {
+                    /* Handle Exit logic */
+                }
+                ImGui::EndMenu();
+            }
+
+            if (ImGui::BeginMenu("Scene")) {
+                if (ImGui::MenuItem("New Scene Object")) {
+                    gScene.create_game_object();
+                    // Do other stuff here, open this entity in the entity editor, etc...
+                }
+                ImGui::EndMenu();
+            }
+            ImGui::EndMainMenuBar();
+        }
+    }
+    ImGui::Render();
 }