tried to add assimp (spoilers, it did not go well, so hey! now we have separate fiels now.)

src/Engine.h

@@ -0,0 +1,124 @@
+#pragma once
+
+#include "Common.h"
+#include "SceneObject.h"
+#include "Camera.h"
+#include "Rendering.h"
+#include "ProjectManager.h"
+#include "EditorUI.h"
+#include "../include/Window/Window.h"
+
+void window_size_callback(GLFWwindow* window, int width, int height);
+
+class Engine {
+private:
+    Window window;
+    GLFWwindow* editorWindow = nullptr;
+    Renderer renderer;
+    Camera camera;
+    ViewportController viewportController;
+    float deltaTime = 0.0f;
+    float lastFrame = 0.0f;
+    bool cursorLocked = false;
+    int viewportWidth = 800;
+    int viewportHeight = 600;
+
+    std::vector<SceneObject> sceneObjects;
+    int selectedObjectId = -1;
+    int nextObjectId = 0;
+
+    // Gizmo state
+    ImGuizmo::OPERATION mCurrentGizmoOperation = ImGuizmo::TRANSLATE;
+    ImGuizmo::MODE mCurrentGizmoMode = ImGuizmo::LOCAL;
+    bool useSnap = false;
+    float snapValue[3] = { 0.5f, 0.5f, 0.5f };
+    float rotationSnapValue = 15.0f;
+
+    FileBrowser fileBrowser;
+    bool viewportFullscreen = false;
+    bool showHierarchy = true;
+    bool showInspector = true;
+    bool showFileBrowser = true;
+    bool showConsole = true;
+    bool showProjectBrowser = true;  // Now merged into file browser
+    bool firstFrame = true;
+    std::vector<std::string> consoleLog;
+    int draggedObjectId = -1;
+
+    ProjectManager projectManager;
+    bool showLauncher = true;
+    bool showNewSceneDialog = false;
+    bool showSaveSceneAsDialog = false;
+    char newSceneName[128] = "";
+    char saveSceneAsName[128] = "";
+    bool rendererInitialized = false;
+    
+    bool showImportOBJDialog = false;
+    bool showImportModelDialog = false;  // For Assimp models
+    std::string pendingOBJPath;
+    std::string pendingModelPath;  // For Assimp models
+    char importOBJName[128] = "";
+    char importModelName[128] = "";  // For Assimp models
+    
+    char fileBrowserSearch[256] = "";
+
+    // Private methods
+    SceneObject* getSelectedObject();
+    static void DecomposeMatrix(const glm::mat4& matrix, glm::vec3& pos, glm::vec3& rot, glm::vec3& scale);
+    
+    void importOBJToScene(const std::string& filepath, const std::string& objectName);
+    void importModelToScene(const std::string& filepath, const std::string& objectName);  // Assimp import
+    void handleKeyboardShortcuts();
+    void OpenProjectPath(const std::string& path);
+    
+    // UI rendering methods
+    void renderLauncher();
+    void renderNewProjectDialog();
+    void renderOpenProjectDialog();
+    void renderMainMenuBar();
+    void renderHierarchyPanel();
+    void renderObjectNode(SceneObject& obj, const std::string& filter);
+    void renderFileBrowserPanel();
+    void renderInspectorPanel();
+    void renderConsolePanel();
+    void renderViewport();
+    void renderDialogs();
+    void renderProjectBrowserPanel();
+    
+    void renderFileBrowserToolbar();
+    void renderFileBrowserBreadcrumb();
+    void renderFileBrowserGridView();
+    void renderFileBrowserListView();
+    void renderFileContextMenu(const fs::directory_entry& entry);
+    void handleFileDoubleClick(const fs::directory_entry& entry);
+    ImVec4 getFileCategoryColor(FileCategory category) const;
+    const char* getFileCategoryIconText(FileCategory category) const;
+    
+    // Project/scene management
+    void createNewProject(const char* name, const char* location);
+    void loadRecentScenes();
+    void saveCurrentScene();
+    void loadScene(const std::string& sceneName);
+    void createNewScene(const std::string& sceneName);
+    
+    // Scene object management
+    void addObject(ObjectType type, const std::string& baseName);
+    void duplicateSelected();
+    void deleteSelected();
+    void setParent(int childId, int parentId);
+    
+    // Console/logging
+    void addConsoleMessage(const std::string& message, ConsoleMessageType type);
+    void logToConsole(const std::string& message);
+    
+    // ImGui setup
+    void setupImGui();
+    bool initRenderer();
+
+public:
+    Engine() = default;
+
+    bool init();
+    void run();
+    void shutdown();
+};