fix(core): add initialization checks and manage component states

Author: GeTechG

LDYOM2/src/core/scenes_manager.cpp

@@ -300,7 +300,9 @@ void ScenesManager::resetCurrentScene() {
 
 void ScenesManager::unloadCurrentScene() {
 	m_currentScene = std::make_unique<Scene>(Scene{.info = SceneInfo{.name = _("scenes.default_scene_name")}});
-	if (auto nodeEditor = WindowManager::instance().getWindowAs<NodeEditorWindow>("node_editor")) {
-		(*nodeEditor)->clearGraph();
+	if (WindowManager::instance().isInitialized()) {
+		if (auto nodeEditor = WindowManager::instance().getWindowAs<NodeEditorWindow>("node_editor")) {
+			(*nodeEditor)->clearGraph();
+		}
 	}
 }

LDYOM2/src/imgui_hook/imgui_hook.cpp

@@ -508,4 +508,5 @@ void ImguiHook::Remove() {
 	ImGui_ImplWin32_Shutdown();
 	ImGui::DestroyContext();
 	MH_DisableHook(MH_ALL_HOOKS);
+	m_bInitialized = false;
 }

LDYOM2/src/imgui_hook/render_hook.cpp

@@ -35,6 +35,8 @@ void ImGuiHook() {
 }
 
 void ImGuiHookRemove() {
+	if (!ImguiHook::m_bInitialized)
+		return;
 	ImguiHook::Remove();
 	LDYOM_INFO("ImGui hook removed");
 }

LDYOM2/src/rendering/window_manager.h

@@ -58,6 +58,7 @@ class WindowManager {
 
 	void initialize();
 	void shutdown() noexcept;
+	bool isInitialized() const noexcept { return m_initialized; }
 
 	WindowManager(const WindowManager&) = delete;
 	WindowManager& operator=(const WindowManager&) = delete;