Zero initialize all pointer class and struct members

This prevents the pitfall of UB when checking if they have been
assigned something valid by comparing to nullptr.

editor/plugins/abstract_polygon_2d_editor.h

@@ -40,9 +40,9 @@ class CanvasItemEditor;
 class AbstractPolygon2DEditor : public HBoxContainer {
 	GDCLASS(AbstractPolygon2DEditor, HBoxContainer);
 
-	Button *button_create;
-	Button *button_edit;
-	Button *button_delete;
+	Button *button_create = nullptr;
+	Button *button_edit = nullptr;
+	Button *button_delete = nullptr;
 
 	struct Vertex {
 		Vertex() {}
@@ -85,9 +85,9 @@ class AbstractPolygon2DEditor : public HBoxContainer {
 
 	bool _polygon_editing_enabled;
 
-	CanvasItemEditor *canvas_item_editor;
-	Panel *panel;
-	ConfirmationDialog *create_resource;
+	CanvasItemEditor *canvas_item_editor = nullptr;
+	Panel *panel = nullptr;
+	ConfirmationDialog *create_resource = nullptr;
 
 protected:
 	enum {
@@ -99,7 +99,7 @@ protected:
 
 	int mode;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	virtual void _menu_option(int p_option);
 	void _wip_changed();
@@ -149,7 +149,7 @@ public:
 class AbstractPolygon2DEditorPlugin : public EditorPlugin {
 	GDCLASS(AbstractPolygon2DEditorPlugin, EditorPlugin);
 
-	AbstractPolygon2DEditor *polygon_editor;
+	AbstractPolygon2DEditor *polygon_editor = nullptr;
 	String klass;
 
 public:

editor/plugins/animation_blend_space_1d_editor.h

@@ -45,36 +45,36 @@ class AnimationNodeBlendSpace1DEditor : public AnimationTreeNodeEditorPlugin {
 
 	Ref<AnimationNodeBlendSpace1D> blend_space;
 
-	HBoxContainer *goto_parent_hb;
-	Button *goto_parent;
+	HBoxContainer *goto_parent_hb = nullptr;
+	Button *goto_parent = nullptr;
 
-	PanelContainer *panel;
-	Button *tool_blend;
-	Button *tool_select;
-	Button *tool_create;
-	VSeparator *tool_erase_sep;
-	Button *tool_erase;
-	Button *snap;
-	SpinBox *snap_value;
+	PanelContainer *panel = nullptr;
+	Button *tool_blend = nullptr;
+	Button *tool_select = nullptr;
+	Button *tool_create = nullptr;
+	VSeparator *tool_erase_sep = nullptr;
+	Button *tool_erase = nullptr;
+	Button *snap = nullptr;
+	SpinBox *snap_value = nullptr;
 
-	LineEdit *label_value;
-	SpinBox *max_value;
-	SpinBox *min_value;
+	LineEdit *label_value = nullptr;
+	SpinBox *max_value = nullptr;
+	SpinBox *min_value = nullptr;
 
-	HBoxContainer *edit_hb;
-	SpinBox *edit_value;
-	Button *open_editor;
+	HBoxContainer *edit_hb = nullptr;
+	SpinBox *edit_value = nullptr;
+	Button *open_editor = nullptr;
 
 	int selected_point;
 
-	Control *blend_space_draw;
+	Control *blend_space_draw = nullptr;
 
-	PanelContainer *error_panel;
-	Label *error_label;
+	PanelContainer *error_panel = nullptr;
+	Label *error_label = nullptr;
 
 	bool updating;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	static AnimationNodeBlendSpace1DEditor *singleton;
 
@@ -87,8 +87,8 @@ class AnimationNodeBlendSpace1DEditor : public AnimationTreeNodeEditorPlugin {
 	void _labels_changed(String);
 	void _snap_toggled();
 
-	PopupMenu *menu;
-	PopupMenu *animations_menu;
+	PopupMenu *menu = nullptr;
+	PopupMenu *animations_menu = nullptr;
 	Vector<String> animations_to_add;
 	float add_point_pos;
 	Vector<real_t> points;
@@ -108,7 +108,7 @@ class AnimationNodeBlendSpace1DEditor : public AnimationTreeNodeEditorPlugin {
 	void _edit_point_pos(double);
 	void _open_editor();
 
-	EditorFileDialog *open_file;
+	EditorFileDialog *open_file = nullptr;
 	Ref<AnimationNode> file_loaded;
 	void _file_opened(const String &p_file);
 

editor/plugins/animation_blend_space_2d_editor.h

@@ -45,43 +45,43 @@ class AnimationNodeBlendSpace2DEditor : public AnimationTreeNodeEditorPlugin {
 
 	Ref<AnimationNodeBlendSpace2D> blend_space;
 
-	PanelContainer *panel;
-	Button *tool_blend;
-	Button *tool_select;
-	Button *tool_create;
-	Button *tool_triangle;
-	VSeparator *tool_erase_sep;
-	Button *tool_erase;
-	Button *snap;
-	SpinBox *snap_x;
-	SpinBox *snap_y;
-	OptionButton *interpolation;
+	PanelContainer *panel = nullptr;
+	Button *tool_blend = nullptr;
+	Button *tool_select = nullptr;
+	Button *tool_create = nullptr;
+	Button *tool_triangle = nullptr;
+	VSeparator *tool_erase_sep = nullptr;
+	Button *tool_erase = nullptr;
+	Button *snap = nullptr;
+	SpinBox *snap_x = nullptr;
+	SpinBox *snap_y = nullptr;
+	OptionButton *interpolation = nullptr;
 
-	Button *auto_triangles;
+	Button *auto_triangles = nullptr;
 
-	LineEdit *label_x;
-	LineEdit *label_y;
-	SpinBox *max_x_value;
-	SpinBox *min_x_value;
-	SpinBox *max_y_value;
-	SpinBox *min_y_value;
+	LineEdit *label_x = nullptr;
+	LineEdit *label_y = nullptr;
+	SpinBox *max_x_value = nullptr;
+	SpinBox *min_x_value = nullptr;
+	SpinBox *max_y_value = nullptr;
+	SpinBox *min_y_value = nullptr;
 
-	HBoxContainer *edit_hb;
-	SpinBox *edit_x;
-	SpinBox *edit_y;
-	Button *open_editor;
+	HBoxContainer *edit_hb = nullptr;
+	SpinBox *edit_x = nullptr;
+	SpinBox *edit_y = nullptr;
+	Button *open_editor = nullptr;
 
 	int selected_point;
 	int selected_triangle;
 
-	Control *blend_space_draw;
+	Control *blend_space_draw = nullptr;
 
-	PanelContainer *error_panel;
-	Label *error_label;
+	PanelContainer *error_panel = nullptr;
+	Label *error_label = nullptr;
 
 	bool updating;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	static AnimationNodeBlendSpace2DEditor *singleton;
 
@@ -94,8 +94,8 @@ class AnimationNodeBlendSpace2DEditor : public AnimationTreeNodeEditorPlugin {
 	void _labels_changed(String);
 	void _snap_toggled();
 
-	PopupMenu *menu;
-	PopupMenu *animations_menu;
+	PopupMenu *menu = nullptr;
+	PopupMenu *animations_menu = nullptr;
 	Vector<String> animations_to_add;
 	Vector2 add_point_pos;
 	Vector<Vector2> points;
@@ -123,7 +123,7 @@ class AnimationNodeBlendSpace2DEditor : public AnimationTreeNodeEditorPlugin {
 
 	StringName get_blend_position_path() const;
 
-	EditorFileDialog *open_file;
+	EditorFileDialog *open_file = nullptr;
 	Ref<AnimationNode> file_loaded;
 	void _file_opened(const String &p_file);
 

editor/plugins/animation_blend_tree_editor_plugin.h

@@ -47,19 +47,19 @@ class AnimationNodeBlendTreeEditor : public AnimationTreeNodeEditorPlugin {
 	GDCLASS(AnimationNodeBlendTreeEditor, AnimationTreeNodeEditorPlugin);
 
 	Ref<AnimationNodeBlendTree> blend_tree;
-	GraphEdit *graph;
-	MenuButton *add_node;
+	GraphEdit *graph = nullptr;
+	MenuButton *add_node = nullptr;
 	Vector2 position_from_popup_menu;
 	bool use_position_from_popup_menu;
 
-	PanelContainer *error_panel;
-	Label *error_label;
+	PanelContainer *error_panel = nullptr;
+	Label *error_label = nullptr;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
-	AcceptDialog *filter_dialog;
-	Tree *filters;
-	CheckBox *filter_enabled;
+	AcceptDialog *filter_dialog = nullptr;
+	Tree *filters = nullptr;
+	CheckBox *filter_enabled = nullptr;
 
 	Map<StringName, ProgressBar *> animations;
 	Vector<EditorProperty *> visible_properties;
@@ -122,7 +122,7 @@ class AnimationNodeBlendTreeEditor : public AnimationTreeNodeEditorPlugin {
 	void _update_editor_settings();
 	void _update_theme();
 
-	EditorFileDialog *open_file;
+	EditorFileDialog *open_file = nullptr;
 	Ref<AnimationNode> file_loaded;
 	void _file_opened(const String &p_file);
 

editor/plugins/animation_player_editor_plugin.h

@@ -46,8 +46,8 @@ class AnimationPlayerEditorPlugin;
 class AnimationPlayerEditor : public VBoxContainer {
 	GDCLASS(AnimationPlayerEditor, VBoxContainer);
 
-	AnimationPlayerEditorPlugin *plugin;
-	AnimationPlayer *player;
+	AnimationPlayerEditorPlugin *plugin = nullptr;
+	AnimationPlayer *player = nullptr;
 
 	enum {
 		TOOL_NEW_ANIM,
@@ -88,31 +88,31 @@ class AnimationPlayerEditor : public VBoxContainer {
 		RESOURCE_SAVE
 	};
 
-	OptionButton *animation;
-	Button *stop;
-	Button *play;
-	Button *play_from;
-	Button *play_bw;
-	Button *play_bw_from;
-	Button *autoplay;
+	OptionButton *animation = nullptr;
+	Button *stop = nullptr;
+	Button *play = nullptr;
+	Button *play_from = nullptr;
+	Button *play_bw = nullptr;
+	Button *play_bw_from = nullptr;
+	Button *autoplay = nullptr;
 
-	MenuButton *tool_anim;
-	Button *onion_toggle;
-	MenuButton *onion_skinning;
-	Button *pin;
-	SpinBox *frame;
-	LineEdit *scale;
-	LineEdit *name;
-	Label *name_title;
-	UndoRedo *undo_redo;
+	MenuButton *tool_anim = nullptr;
+	Button *onion_toggle = nullptr;
+	MenuButton *onion_skinning = nullptr;
+	Button *pin = nullptr;
+	SpinBox *frame = nullptr;
+	LineEdit *scale = nullptr;
+	LineEdit *name = nullptr;
+	Label *name_title = nullptr;
+	UndoRedo *undo_redo = nullptr;
 	Ref<Texture2D> autoplay_icon;
 	Ref<Texture2D> reset_icon;
 	Ref<ImageTexture> autoplay_reset_icon;
 	bool last_active;
 	float timeline_position;
 
-	EditorFileDialog *file;
-	ConfirmationDialog *delete_dialog;
+	EditorFileDialog *file = nullptr;
+	ConfirmationDialog *delete_dialog = nullptr;
 
 	struct BlendEditor {
 		AcceptDialog *dialog = nullptr;
@@ -121,14 +121,14 @@ class AnimationPlayerEditor : public VBoxContainer {
 
 	} blend_editor;
 
-	ConfirmationDialog *name_dialog;
-	ConfirmationDialog *error_dialog;
+	ConfirmationDialog *name_dialog = nullptr;
+	ConfirmationDialog *error_dialog = nullptr;
 	int name_dialog_op = TOOL_NEW_ANIM;
 
 	bool updating;
 	bool updating_blends;
 
-	AnimationTrackEditor *track_editor;
+	AnimationTrackEditor *track_editor = nullptr;
 	static AnimationPlayerEditor *singleton;
 
 	// Onion skinning.
@@ -250,7 +250,7 @@ public:
 class AnimationPlayerEditorPlugin : public EditorPlugin {
 	GDCLASS(AnimationPlayerEditorPlugin, EditorPlugin);
 
-	AnimationPlayerEditor *anim_editor;
+	AnimationPlayerEditor *anim_editor = nullptr;
 
 protected:
 	void _notification(int p_what);

editor/plugins/animation_state_machine_editor.h

@@ -47,36 +47,36 @@ class AnimationNodeStateMachineEditor : public AnimationTreeNodeEditorPlugin {
 
 	Ref<AnimationNodeStateMachine> state_machine;
 
-	Button *tool_select;
-	Button *tool_create;
-	Button *tool_connect;
-	Popup *name_edit_popup;
-	LineEdit *name_edit;
+	Button *tool_select = nullptr;
+	Button *tool_create = nullptr;
+	Button *tool_connect = nullptr;
+	Popup *name_edit_popup = nullptr;
+	LineEdit *name_edit = nullptr;
 
-	HBoxContainer *tool_erase_hb;
-	Button *tool_erase;
-	Button *tool_autoplay;
-	Button *tool_end;
+	HBoxContainer *tool_erase_hb = nullptr;
+	Button *tool_erase = nullptr;
+	Button *tool_autoplay = nullptr;
+	Button *tool_end = nullptr;
 
-	OptionButton *transition_mode;
-	OptionButton *play_mode;
+	OptionButton *transition_mode = nullptr;
+	OptionButton *play_mode = nullptr;
 
-	PanelContainer *panel;
+	PanelContainer *panel = nullptr;
 
 	StringName selected_node;
 
-	HScrollBar *h_scroll;
-	VScrollBar *v_scroll;
+	HScrollBar *h_scroll = nullptr;
+	VScrollBar *v_scroll = nullptr;
 
-	Control *state_machine_draw;
-	Control *state_machine_play_pos;
+	Control *state_machine_draw = nullptr;
+	Control *state_machine_play_pos = nullptr;
 
-	PanelContainer *error_panel;
-	Label *error_label;
+	PanelContainer *error_panel = nullptr;
+	Label *error_label = nullptr;
 
 	bool updating;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	static AnimationNodeStateMachineEditor *singleton;
 
@@ -87,8 +87,8 @@ class AnimationNodeStateMachineEditor : public AnimationTreeNodeEditorPlugin {
 
 	void _update_graph();
 
-	PopupMenu *menu;
-	PopupMenu *animations_menu;
+	PopupMenu *menu = nullptr;
+	PopupMenu *animations_menu = nullptr;
 	Vector<String> animations_to_add;
 
 	Vector2 add_node_pos;
@@ -166,7 +166,7 @@ class AnimationNodeStateMachineEditor : public AnimationTreeNodeEditorPlugin {
 	float error_time;
 	String error_text;
 
-	EditorFileDialog *open_file;
+	EditorFileDialog *open_file = nullptr;
 	Ref<AnimationNode> file_loaded;
 	void _file_opened(const String &p_file);
 

editor/plugins/animation_tree_editor_plugin.h

@@ -52,11 +52,11 @@ public:
 class AnimationTreeEditor : public VBoxContainer {
 	GDCLASS(AnimationTreeEditor, VBoxContainer);
 
-	ScrollContainer *path_edit;
-	HBoxContainer *path_hb;
+	ScrollContainer *path_edit = nullptr;
+	HBoxContainer *path_hb = nullptr;
 
-	AnimationTree *tree;
-	MarginContainer *editor_base;
+	AnimationTree *tree = nullptr;
+	MarginContainer *editor_base = nullptr;
 
 	Vector<String> button_path;
 	Vector<String> edited_path;
@@ -96,8 +96,8 @@ public:
 class AnimationTreeEditorPlugin : public EditorPlugin {
 	GDCLASS(AnimationTreeEditorPlugin, EditorPlugin);
 
-	AnimationTreeEditor *anim_tree_editor;
-	Button *button;
+	AnimationTreeEditor *anim_tree_editor = nullptr;
+	Button *button = nullptr;
 
 public:
 	virtual String get_name() const override { return "AnimationTree"; }

editor/plugins/asset_library_editor_plugin.h

@@ -53,12 +53,12 @@
 class EditorAssetLibraryItem : public PanelContainer {
 	GDCLASS(EditorAssetLibraryItem, PanelContainer);
 
-	TextureButton *icon;
-	LinkButton *title;
-	LinkButton *category;
-	LinkButton *author;
+	TextureButton *icon = nullptr;
+	LinkButton *title = nullptr;
+	LinkButton *category = nullptr;
+	LinkButton *author = nullptr;
 	TextureRect *stars[5];
-	Label *price;
+	Label *price = nullptr;
 
 	int asset_id;
 	int category_id;
@@ -83,11 +83,11 @@ public:
 class EditorAssetLibraryItemDescription : public ConfirmationDialog {
 	GDCLASS(EditorAssetLibraryItemDescription, ConfirmationDialog);
 
-	EditorAssetLibraryItem *item;
-	RichTextLabel *description;
-	ScrollContainer *previews;
-	HBoxContainer *preview_hb;
-	PanelContainer *previews_bg;
+	EditorAssetLibraryItem *item = nullptr;
+	RichTextLabel *description = nullptr;
+	ScrollContainer *previews = nullptr;
+	HBoxContainer *preview_hb = nullptr;
+	PanelContainer *previews_bg = nullptr;
 
 	struct Preview {
 		int id = 0;
@@ -98,7 +98,7 @@ class EditorAssetLibraryItemDescription : public ConfirmationDialog {
 	};
 
 	Vector<Preview> preview_images;
-	TextureRect *preview;
+	TextureRect *preview = nullptr;
 
 	void set_image(int p_type, int p_index, const Ref<Texture2D> &p_image);
 
@@ -130,19 +130,19 @@ public:
 class EditorAssetLibraryItemDownload : public MarginContainer {
 	GDCLASS(EditorAssetLibraryItemDownload, MarginContainer);
 
-	PanelContainer *panel;
-	TextureRect *icon;
-	Label *title;
-	ProgressBar *progress;
-	Button *install_button;
-	Button *retry_button;
-	TextureButton *dismiss_button;
+	PanelContainer *panel = nullptr;
+	TextureRect *icon = nullptr;
+	Label *title = nullptr;
+	ProgressBar *progress = nullptr;
+	Button *install_button = nullptr;
+	Button *retry_button = nullptr;
+	TextureButton *dismiss_button = nullptr;
 
-	AcceptDialog *download_error;
-	HTTPRequest *download;
+	AcceptDialog *download_error = nullptr;
+	HTTPRequest *download = nullptr;
 	String host;
 	String sha256;
-	Label *status;
+	Label *status = nullptr;
 
 	int prev_status;
 
@@ -150,7 +150,7 @@ class EditorAssetLibraryItemDownload : public MarginContainer {
 
 	bool external_install;
 
-	EditorAssetInstaller *asset_installer;
+	EditorAssetInstaller *asset_installer = nullptr;
 
 	void _close();
 	void _make_request();
@@ -176,35 +176,35 @@ class EditorAssetLibrary : public PanelContainer {
 
 	String host;
 
-	EditorFileDialog *asset_open;
-	EditorAssetInstaller *asset_installer;
+	EditorFileDialog *asset_open = nullptr;
+	EditorAssetInstaller *asset_installer = nullptr;
 
 	void _asset_open();
 	void _asset_file_selected(const String &p_file);
 	void _update_repository_options();
 
-	PanelContainer *library_scroll_bg;
-	ScrollContainer *library_scroll;
-	VBoxContainer *library_vb;
-	Label *library_loading;
-	Label *library_error;
-	LineEdit *filter;
-	Timer *filter_debounce_timer;
-	OptionButton *categories;
-	OptionButton *repository;
-	OptionButton *sort;
-	HBoxContainer *error_hb;
-	TextureRect *error_tr;
-	Label *error_label;
-	MenuButton *support;
+	PanelContainer *library_scroll_bg = nullptr;
+	ScrollContainer *library_scroll = nullptr;
+	VBoxContainer *library_vb = nullptr;
+	Label *library_loading = nullptr;
+	Label *library_error = nullptr;
+	LineEdit *filter = nullptr;
+	Timer *filter_debounce_timer = nullptr;
+	OptionButton *categories = nullptr;
+	OptionButton *repository = nullptr;
+	OptionButton *sort = nullptr;
+	HBoxContainer *error_hb = nullptr;
+	TextureRect *error_tr = nullptr;
+	Label *error_label = nullptr;
+	MenuButton *support = nullptr;
 
-	HBoxContainer *contents;
+	HBoxContainer *contents = nullptr;
 
-	HBoxContainer *asset_top_page;
-	GridContainer *asset_items;
-	HBoxContainer *asset_bottom_page;
+	HBoxContainer *asset_top_page = nullptr;
+	GridContainer *asset_items = nullptr;
+	HBoxContainer *asset_bottom_page = nullptr;
 
-	HTTPRequest *request;
+	HTTPRequest *request = nullptr;
 
 	bool templates_only;
 	bool initial_loading;
@@ -260,7 +260,7 @@ class EditorAssetLibrary : public PanelContainer {
 	HBoxContainer *_make_pages(int p_page, int p_page_count, int p_page_len, int p_total_items, int p_current_items);
 
 	//
-	EditorAssetLibraryItemDescription *description;
+	EditorAssetLibraryItemDescription *description = nullptr;
 	//
 
 	enum RequestType {
@@ -273,8 +273,8 @@ class EditorAssetLibrary : public PanelContainer {
 	RequestType requesting;
 	Dictionary category_map;
 
-	ScrollContainer *downloads_scroll;
-	HBoxContainer *downloads_hb;
+	ScrollContainer *downloads_scroll = nullptr;
+	HBoxContainer *downloads_hb = nullptr;
 
 	void _install_asset();
 
@@ -315,7 +315,7 @@ public:
 class AssetLibraryEditorPlugin : public EditorPlugin {
 	GDCLASS(AssetLibraryEditorPlugin, EditorPlugin);
 
-	EditorAssetLibrary *addon_library;
+	EditorAssetLibrary *addon_library = nullptr;
 
 public:
 	virtual String get_name() const override { return "AssetLib"; }

editor/plugins/audio_stream_editor_plugin.h

@@ -75,7 +75,7 @@ public:
 class AudioStreamEditorPlugin : public EditorPlugin {
 	GDCLASS(AudioStreamEditorPlugin, EditorPlugin);
 
-	AudioStreamEditor *audio_editor;
+	AudioStreamEditor *audio_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "Audio"; }

editor/plugins/camera_3d_editor_plugin.h

@@ -37,9 +37,9 @@
 class Camera3DEditor : public Control {
 	GDCLASS(Camera3DEditor, Control);
 
-	Panel *panel;
-	Button *preview;
-	Node *node;
+	Panel *panel = nullptr;
+	Button *preview = nullptr;
+	Node *node = nullptr;
 
 	void _pressed();
 

editor/plugins/canvas_item_editor_plugin.h

@@ -183,16 +183,16 @@ private:
 	bool selection_menu_additive_selection;
 
 	Tool tool = TOOL_SELECT;
-	Control *viewport;
-	Control *viewport_scrollable;
+	Control *viewport = nullptr;
+	Control *viewport_scrollable = nullptr;
 
-	HScrollBar *h_scroll;
-	VScrollBar *v_scroll;
-	HBoxContainer *hb;
+	HScrollBar *h_scroll = nullptr;
+	VScrollBar *v_scroll = nullptr;
+	HBoxContainer *hb = nullptr;
 	// Used for secondary menu items which are displayed depending on the currently selected node
 	// (such as MeshInstance's "Mesh" menu).
-	PanelContainer *context_menu_container;
-	HBoxContainer *hbc_context_menu;
+	PanelContainer *context_menu_container = nullptr;
+	HBoxContainer *hbc_context_menu = nullptr;
 
 	Transform2D transform;
 	GridVisibility grid_visibility = GRID_VISIBILITY_SHOW_WHEN_SNAPPING;
@@ -293,47 +293,47 @@ private:
 	};
 	List<PoseClipboard> pose_clipboard;
 
-	Button *select_button;
+	Button *select_button = nullptr;
 
-	Button *move_button;
-	Button *scale_button;
-	Button *rotate_button;
+	Button *move_button = nullptr;
+	Button *scale_button = nullptr;
+	Button *rotate_button = nullptr;
 
-	Button *list_select_button;
-	Button *pivot_button;
-	Button *pan_button;
+	Button *list_select_button = nullptr;
+	Button *pivot_button = nullptr;
+	Button *pan_button = nullptr;
 
-	Button *ruler_button;
+	Button *ruler_button = nullptr;
 
-	Button *smart_snap_button;
-	Button *grid_snap_button;
-	MenuButton *snap_config_menu;
-	PopupMenu *smartsnap_config_popup;
+	Button *smart_snap_button = nullptr;
+	Button *grid_snap_button = nullptr;
+	MenuButton *snap_config_menu = nullptr;
+	PopupMenu *smartsnap_config_popup = nullptr;
 
-	Button *lock_button;
-	Button *unlock_button;
+	Button *lock_button = nullptr;
+	Button *unlock_button = nullptr;
 
-	Button *group_button;
-	Button *ungroup_button;
+	Button *group_button = nullptr;
+	Button *ungroup_button = nullptr;
 
-	MenuButton *skeleton_menu;
-	Button *override_camera_button;
-	MenuButton *view_menu;
-	PopupMenu *grid_menu;
-	HBoxContainer *animation_hb;
-	MenuButton *animation_menu;
+	MenuButton *skeleton_menu = nullptr;
+	Button *override_camera_button = nullptr;
+	MenuButton *view_menu = nullptr;
+	PopupMenu *grid_menu = nullptr;
+	HBoxContainer *animation_hb = nullptr;
+	MenuButton *animation_menu = nullptr;
 
-	Button *key_loc_button;
-	Button *key_rot_button;
-	Button *key_scale_button;
-	Button *key_insert_button;
-	Button *key_auto_insert_button;
+	Button *key_loc_button = nullptr;
+	Button *key_rot_button = nullptr;
+	Button *key_scale_button = nullptr;
+	Button *key_insert_button = nullptr;
+	Button *key_auto_insert_button = nullptr;
 
-	PopupMenu *selection_menu;
-	PopupMenu *add_node_menu;
+	PopupMenu *selection_menu = nullptr;
+	PopupMenu *add_node_menu = nullptr;
 
-	Control *top_ruler;
-	Control *left_ruler;
+	Control *top_ruler = nullptr;
+	Control *left_ruler = nullptr;
 
 	Point2 drag_start_origin;
 	DragType drag_type = DRAG_NONE;
@@ -374,9 +374,9 @@ private:
 	void _find_canvas_items_in_rect(const Rect2 &p_rect, Node *p_node, List<CanvasItem *> *r_items, const Transform2D &p_parent_xform = Transform2D(), const Transform2D &p_canvas_xform = Transform2D());
 	bool _select_click_on_item(CanvasItem *item, Point2 p_click_pos, bool p_append);
 
-	ConfirmationDialog *snap_dialog;
+	ConfirmationDialog *snap_dialog = nullptr;
 
-	CanvasItem *ref_item;
+	CanvasItem *ref_item = nullptr;
 
 	void _save_canvas_item_state(List<CanvasItem *> p_canvas_items, bool save_bones = false);
 	void _restore_canvas_item_state(List<CanvasItem *> p_canvas_items, bool restore_bones = false);
@@ -400,7 +400,7 @@ private:
 	void _prepare_grid_menu();
 	void _on_grid_menu_id_pressed(int p_id);
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	List<CanvasItem *> _get_edited_canvas_items(bool retrieve_locked = false, bool remove_canvas_item_if_parent_in_selection = true);
 	Rect2 _get_encompassing_rect_from_list(List<CanvasItem *> p_list);
@@ -476,8 +476,8 @@ private:
 			const SnapTarget p_snap_target, List<const CanvasItem *> p_exceptions,
 			const Node *p_current);
 
-	VBoxContainer *controls_vb;
-	EditorZoomWidget *zoom_widget;
+	VBoxContainer *controls_vb = nullptr;
+	EditorZoomWidget *zoom_widget = nullptr;
 	void _update_zoom(real_t p_zoom);
 	void _shortcut_zoom_set(real_t p_zoom);
 	void _zoom_on_position(real_t p_zoom, Point2 p_position = Point2());
@@ -488,9 +488,9 @@ private:
 
 	void _update_override_camera_button(bool p_game_running);
 
-	HSplitContainer *left_panel_split;
-	HSplitContainer *right_panel_split;
-	VSplitContainer *bottom_split;
+	HSplitContainer *left_panel_split = nullptr;
+	HSplitContainer *right_panel_split = nullptr;
+	VSplitContainer *bottom_split = nullptr;
 
 	void _update_context_menu_stylebox();
 
@@ -555,7 +555,7 @@ public:
 
 	void focus_selection();
 
-	EditorSelection *editor_selection;
+	EditorSelection *editor_selection = nullptr;
 
 	CanvasItemEditor();
 };
@@ -563,7 +563,7 @@ public:
 class CanvasItemEditorPlugin : public EditorPlugin {
 	GDCLASS(CanvasItemEditorPlugin, EditorPlugin);
 
-	CanvasItemEditor *canvas_item_editor;
+	CanvasItemEditor *canvas_item_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "2D"; }
@@ -589,18 +589,18 @@ class CanvasItemEditorViewport : public Control {
 	Vector<String> texture_node_types;
 
 	Vector<String> selected_files;
-	Node *target_node;
+	Node *target_node = nullptr;
 	Point2 drop_pos;
 
-	EditorData *editor_data;
-	CanvasItemEditor *canvas_item_editor;
-	Control *preview_node;
-	AcceptDialog *accept;
-	AcceptDialog *selector;
-	Label *selector_label;
-	Label *label;
-	Label *label_desc;
-	VBoxContainer *btn_group;
+	EditorData *editor_data = nullptr;
+	CanvasItemEditor *canvas_item_editor = nullptr;
+	Control *preview_node = nullptr;
+	AcceptDialog *accept = nullptr;
+	AcceptDialog *selector = nullptr;
+	Label *selector_label = nullptr;
+	Label *label = nullptr;
+	Label *label_desc = nullptr;
+	VBoxContainer *btn_group = nullptr;
 	Ref<ButtonGroup> button_group;
 
 	void _on_mouse_exit();

editor/plugins/collision_polygon_2d_editor_plugin.h

@@ -37,7 +37,7 @@
 class CollisionPolygon2DEditor : public AbstractPolygon2DEditor {
 	GDCLASS(CollisionPolygon2DEditor, AbstractPolygon2DEditor);
 
-	CollisionPolygon2D *node;
+	CollisionPolygon2D *node = nullptr;
 
 protected:
 	virtual Node2D *_get_node() const override;

editor/plugins/collision_shape_2d_editor_plugin.h

@@ -61,9 +61,9 @@ class CollisionShape2DEditor : public Control {
 		Point2(1, -1),
 	};
 
-	UndoRedo *undo_redo;
-	CanvasItemEditor *canvas_item_editor;
-	CollisionShape2D *node;
+	UndoRedo *undo_redo = nullptr;
+	CanvasItemEditor *canvas_item_editor = nullptr;
+	CollisionShape2D *node = nullptr;
 
 	Vector<Point2> handles;
 
@@ -96,7 +96,7 @@ public:
 class CollisionShape2DEditorPlugin : public EditorPlugin {
 	GDCLASS(CollisionShape2DEditorPlugin, EditorPlugin);
 
-	CollisionShape2DEditor *collision_shape_2d_editor;
+	CollisionShape2DEditor *collision_shape_2d_editor = nullptr;
 
 public:
 	virtual bool forward_canvas_gui_input(const Ref<InputEvent> &p_event) override { return collision_shape_2d_editor->forward_canvas_gui_input(p_event); }

editor/plugins/control_editor_plugin.h

@@ -70,7 +70,7 @@ public:
 
 class EditorPropertyAnchorsPreset : public EditorProperty {
 	GDCLASS(EditorPropertyAnchorsPreset, EditorProperty);
-	OptionButton *options;
+	OptionButton *options = nullptr;
 
 	void _option_selected(int p_which);
 
@@ -94,9 +94,9 @@ class EditorPropertySizeFlags : public EditorProperty {
 		SIZE_FLAGS_PRESET_CUSTOM,
 	};
 
-	OptionButton *flag_presets;
-	CheckBox *flag_expand;
-	VBoxContainer *flag_options;
+	OptionButton *flag_presets = nullptr;
+	CheckBox *flag_expand = nullptr;
+	VBoxContainer *flag_options = nullptr;
 	Vector<CheckBox *> flag_checks;
 
 	bool vertical = false;
@@ -128,8 +128,8 @@ public:
 class ControlEditorToolbar : public HBoxContainer {
 	GDCLASS(ControlEditorToolbar, HBoxContainer);
 
-	UndoRedo *undo_redo;
-	EditorSelection *editor_selection;
+	UndoRedo *undo_redo = nullptr;
+	EditorSelection *editor_selection = nullptr;
 
 	enum MenuOption {
 		ANCHORS_AND_OFFSETS_PRESET_TOP_LEFT,
@@ -198,12 +198,12 @@ class ControlEditorToolbar : public HBoxContainer {
 		CONTAINERS_V_PRESET_SHRINK_END,
 	};
 
-	MenuButton *anchor_presets_menu;
-	PopupMenu *anchors_popup;
-	MenuButton *container_h_presets_menu;
-	MenuButton *container_v_presets_menu;
+	MenuButton *anchor_presets_menu = nullptr;
+	PopupMenu *anchors_popup = nullptr;
+	MenuButton *container_h_presets_menu = nullptr;
+	MenuButton *container_v_presets_menu = nullptr;
 
-	Button *anchor_mode_button;
+	Button *anchor_mode_button = nullptr;
 
 	bool anchors_mode = false;
 
@@ -239,7 +239,7 @@ public:
 class ControlEditorPlugin : public EditorPlugin {
 	GDCLASS(ControlEditorPlugin, EditorPlugin);
 
-	ControlEditorToolbar *toolbar;
+	ControlEditorToolbar *toolbar = nullptr;
 
 public:
 	virtual String get_name() const override { return "Control"; }

editor/plugins/cpu_particles_2d_editor_plugin.h

@@ -55,22 +55,22 @@ class CPUParticles2DEditorPlugin : public EditorPlugin {
 		EMISSION_MODE_BORDER_DIRECTED
 	};
 
-	CPUParticles2D *particles;
+	CPUParticles2D *particles = nullptr;
 
-	EditorFileDialog *file;
+	EditorFileDialog *file = nullptr;
 
-	HBoxContainer *toolbar;
-	MenuButton *menu;
+	HBoxContainer *toolbar = nullptr;
+	MenuButton *menu = nullptr;
 
-	SpinBox *epoints;
+	SpinBox *epoints = nullptr;
 
-	ConfirmationDialog *emission_mask;
-	OptionButton *emission_mask_mode;
-	CheckBox *emission_colors;
+	ConfirmationDialog *emission_mask = nullptr;
+	OptionButton *emission_mask_mode = nullptr;
+	CheckBox *emission_colors = nullptr;
 
 	String source_emission_file;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	void _file_selected(const String &p_file);
 	void _menu_callback(int p_idx);
 	void _generate_emission_mask();

editor/plugins/cpu_particles_3d_editor_plugin.h

@@ -44,7 +44,7 @@ class CPUParticles3DEditor : public GPUParticles3DEditorBase {
 
 	};
 
-	CPUParticles3D *node;
+	CPUParticles3D *node = nullptr;
 
 	void _menu_option(int);
 
@@ -65,7 +65,7 @@ public:
 class CPUParticles3DEditorPlugin : public EditorPlugin {
 	GDCLASS(CPUParticles3DEditorPlugin, EditorPlugin);
 
-	CPUParticles3DEditor *particles_editor;
+	CPUParticles3DEditor *particles_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "CPUParticles3D"; }

editor/plugins/curve_editor_plugin.h

@@ -99,8 +99,8 @@ private:
 	Transform2D _world_to_view;
 
 	Ref<Curve> _curve_ref;
-	PopupMenu *_context_menu;
-	PopupMenu *_presets_menu;
+	PopupMenu *_context_menu = nullptr;
+	PopupMenu *_presets_menu = nullptr;
 
 	Array _undo_data;
 	bool _has_undo_data;

editor/plugins/debugger_editor_plugin.h

@@ -41,9 +41,9 @@ class DebuggerEditorPlugin : public EditorPlugin {
 	GDCLASS(DebuggerEditorPlugin, EditorPlugin);
 
 private:
-	MenuButton *debug_menu;
-	EditorFileServer *file_server;
-	PopupMenu *instances_menu;
+	MenuButton *debug_menu = nullptr;
+	EditorFileServer *file_server = nullptr;
+	PopupMenu *instances_menu = nullptr;
 
 	enum MenuOptions {
 		RUN_FILE_SERVER,

editor/plugins/gpu_particles_2d_editor_plugin.h

@@ -56,26 +56,26 @@ class GPUParticles2DEditorPlugin : public EditorPlugin {
 		EMISSION_MODE_BORDER_DIRECTED
 	};
 
-	GPUParticles2D *particles;
+	GPUParticles2D *particles = nullptr;
 	List<GPUParticles2D *> selected_particles;
 
-	EditorFileDialog *file;
+	EditorFileDialog *file = nullptr;
 
-	HBoxContainer *toolbar;
-	MenuButton *menu;
+	HBoxContainer *toolbar = nullptr;
+	MenuButton *menu = nullptr;
 
-	SpinBox *epoints;
+	SpinBox *epoints = nullptr;
 
-	ConfirmationDialog *generate_visibility_rect;
-	SpinBox *generate_seconds;
+	ConfirmationDialog *generate_visibility_rect = nullptr;
+	SpinBox *generate_seconds = nullptr;
 
-	ConfirmationDialog *emission_mask;
-	OptionButton *emission_mask_mode;
-	CheckBox *emission_colors;
+	ConfirmationDialog *emission_mask = nullptr;
+	OptionButton *emission_mask_mode = nullptr;
+	CheckBox *emission_colors = nullptr;
 
 	String source_emission_file;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	void _file_selected(const String &p_file);
 	void _menu_callback(int p_idx);
 	void _generate_visibility_rect();

editor/plugins/gpu_particles_3d_editor_plugin.h

@@ -41,16 +41,16 @@ class GPUParticles3DEditorBase : public Control {
 	GDCLASS(GPUParticles3DEditorBase, Control);
 
 protected:
-	Node3D *base_node;
-	Panel *panel;
-	MenuButton *options;
-	HBoxContainer *particles_editor_hb;
+	Node3D *base_node = nullptr;
+	Panel *panel = nullptr;
+	MenuButton *options = nullptr;
+	HBoxContainer *particles_editor_hb = nullptr;
 
-	SceneTreeDialog *emission_tree_dialog;
+	SceneTreeDialog *emission_tree_dialog = nullptr;
 
-	ConfirmationDialog *emission_dialog;
-	SpinBox *emission_amount;
-	OptionButton *emission_fill;
+	ConfirmationDialog *emission_dialog = nullptr;
+	SpinBox *emission_amount = nullptr;
+	OptionButton *emission_fill = nullptr;
 
 	Vector<Face3> geometry;
 
@@ -67,9 +67,9 @@ public:
 class GPUParticles3DEditor : public GPUParticles3DEditorBase {
 	GDCLASS(GPUParticles3DEditor, GPUParticles3DEditorBase);
 
-	ConfirmationDialog *generate_aabb;
-	SpinBox *generate_seconds;
-	GPUParticles3D *node;
+	ConfirmationDialog *generate_aabb = nullptr;
+	SpinBox *generate_seconds = nullptr;
+	GPUParticles3D *node = nullptr;
 
 	enum Menu {
 		MENU_OPTION_GENERATE_AABB,
@@ -101,7 +101,7 @@ public:
 class GPUParticles3DEditorPlugin : public EditorPlugin {
 	GDCLASS(GPUParticles3DEditorPlugin, EditorPlugin);
 
-	GPUParticles3DEditor *particles_editor;
+	GPUParticles3DEditor *particles_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "GPUParticles3D"; }

editor/plugins/gpu_particles_collision_sdf_editor_plugin.h

@@ -41,12 +41,12 @@ class EditorFileDialog;
 class GPUParticlesCollisionSDF3DEditorPlugin : public EditorPlugin {
 	GDCLASS(GPUParticlesCollisionSDF3DEditorPlugin, EditorPlugin);
 
-	GPUParticlesCollisionSDF3D *col_sdf;
+	GPUParticlesCollisionSDF3D *col_sdf = nullptr;
 
-	HBoxContainer *bake_hb;
-	Button *bake;
+	HBoxContainer *bake_hb = nullptr;
+	Button *bake = nullptr;
 
-	EditorFileDialog *probe_file;
+	EditorFileDialog *probe_file = nullptr;
 
 	static EditorProgress *tmp_progress;
 	static void bake_func_begin(int p_steps);

editor/plugins/gradient_editor_plugin.h

@@ -65,9 +65,9 @@ class GradientReverseButton : public BaseButton {
 class EditorInspectorPluginGradient : public EditorInspectorPlugin {
 	GDCLASS(EditorInspectorPluginGradient, EditorInspectorPlugin);
 
-	GradientEditor *editor;
-	HBoxContainer *gradient_tools_hbox;
-	GradientReverseButton *reverse_btn;
+	GradientEditor *editor = nullptr;
+	HBoxContainer *gradient_tools_hbox = nullptr;
+	GradientReverseButton *reverse_btn = nullptr;
 
 	void _reverse_button_pressed();
 

editor/plugins/input_event_editor_plugin.h

@@ -38,11 +38,11 @@
 class InputEventConfigContainer : public HBoxContainer {
 	GDCLASS(InputEventConfigContainer, HBoxContainer);
 
-	Label *input_event_text;
-	Button *open_config_button;
+	Label *input_event_text = nullptr;
+	Button *open_config_button = nullptr;
 
 	Ref<InputEvent> input_event;
-	InputEventConfigurationDialog *config_dialog;
+	InputEventConfigurationDialog *config_dialog = nullptr;
 
 	void _config_dialog_confirmed();
 	void _configure_pressed();

editor/plugins/light_occluder_2d_editor_plugin.h

@@ -37,7 +37,7 @@
 class LightOccluder2DEditor : public AbstractPolygon2DEditor {
 	GDCLASS(LightOccluder2DEditor, AbstractPolygon2DEditor);
 
-	LightOccluder2D *node;
+	LightOccluder2D *node = nullptr;
 
 	Ref<OccluderPolygon2D> _ensure_occluder() const;
 

editor/plugins/lightmap_gi_editor_plugin.h

@@ -41,11 +41,11 @@ class EditorFileDialog;
 class LightmapGIEditorPlugin : public EditorPlugin {
 	GDCLASS(LightmapGIEditorPlugin, EditorPlugin);
 
-	LightmapGI *lightmap;
+	LightmapGI *lightmap = nullptr;
 
-	Button *bake;
+	Button *bake = nullptr;
 
-	EditorFileDialog *file_dialog;
+	EditorFileDialog *file_dialog = nullptr;
 	static EditorProgress *tmp_progress;
 	static bool bake_func_step(float p_progress, const String &p_description, void *, bool p_refresh);
 	static void bake_func_end(uint64_t p_time_started);

editor/plugins/line_2d_editor_plugin.h

@@ -37,7 +37,7 @@
 class Line2DEditor : public AbstractPolygon2DEditor {
 	GDCLASS(Line2DEditor, AbstractPolygon2DEditor);
 
-	Line2D *node;
+	Line2D *node = nullptr;
 
 protected:
 	virtual Node2D *_get_node() const override;

editor/plugins/mesh_editor_plugin.h

@@ -44,17 +44,17 @@ class MeshEditor : public SubViewportContainer {
 	float rot_x;
 	float rot_y;
 
-	SubViewport *viewport;
-	MeshInstance3D *mesh_instance;
-	Node3D *rotation;
-	DirectionalLight3D *light1;
-	DirectionalLight3D *light2;
-	Camera3D *camera;
+	SubViewport *viewport = nullptr;
+	MeshInstance3D *mesh_instance = nullptr;
+	Node3D *rotation = nullptr;
+	DirectionalLight3D *light1 = nullptr;
+	DirectionalLight3D *light2 = nullptr;
+	Camera3D *camera = nullptr;
 
 	Ref<Mesh> mesh;
 
-	TextureButton *light_1_switch;
-	TextureButton *light_2_switch;
+	TextureButton *light_1_switch = nullptr;
+	TextureButton *light_2_switch = nullptr;
 
 	void _button_pressed(Node *p_button);
 	bool first_enter;

editor/plugins/mesh_instance_3d_editor_plugin.h

@@ -51,17 +51,17 @@ class MeshInstance3DEditor : public Control {
 		MENU_OPTION_DEBUG_UV2,
 	};
 
-	MeshInstance3D *node;
+	MeshInstance3D *node = nullptr;
 
-	MenuButton *options;
+	MenuButton *options = nullptr;
 
-	ConfirmationDialog *outline_dialog;
-	SpinBox *outline_size;
+	ConfirmationDialog *outline_dialog = nullptr;
+	SpinBox *outline_size = nullptr;
 
-	AcceptDialog *err_dialog;
+	AcceptDialog *err_dialog = nullptr;
 
-	AcceptDialog *debug_uv_dialog;
-	Control *debug_uv;
+	AcceptDialog *debug_uv_dialog = nullptr;
+	Control *debug_uv = nullptr;
 	Vector<Vector2> uv_lines;
 
 	void _menu_option(int p_option);
@@ -84,7 +84,7 @@ public:
 class MeshInstance3DEditorPlugin : public EditorPlugin {
 	GDCLASS(MeshInstance3DEditorPlugin, EditorPlugin);
 
-	MeshInstance3DEditor *mesh_editor;
+	MeshInstance3DEditor *mesh_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "MeshInstance3D"; }

editor/plugins/mesh_library_editor_plugin.h

@@ -43,10 +43,10 @@ class MeshLibraryEditor : public Control {
 
 	Ref<MeshLibrary> mesh_library;
 
-	MenuButton *menu;
-	ConfirmationDialog *cd_remove;
-	ConfirmationDialog *cd_update;
-	EditorFileDialog *file;
+	MenuButton *menu = nullptr;
+	ConfirmationDialog *cd_remove = nullptr;
+	ConfirmationDialog *cd_update = nullptr;
+	EditorFileDialog *file = nullptr;
 	bool apply_xforms;
 	int to_erase;
 
@@ -81,7 +81,7 @@ public:
 class MeshLibraryEditorPlugin : public EditorPlugin {
 	GDCLASS(MeshLibraryEditorPlugin, EditorPlugin);
 
-	MeshLibraryEditor *mesh_library_editor;
+	MeshLibraryEditor *mesh_library_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "MeshLibrary"; }

editor/plugins/multimesh_editor_plugin.h

@@ -43,26 +43,26 @@ class MultiMeshEditor : public Control {
 
 	friend class MultiMeshEditorPlugin;
 
-	AcceptDialog *err_dialog;
-	MenuButton *options;
-	MultiMeshInstance3D *_last_pp_node;
+	AcceptDialog *err_dialog = nullptr;
+	MenuButton *options = nullptr;
+	MultiMeshInstance3D *_last_pp_node = nullptr;
 	bool browsing_source;
 
-	Panel *panel;
-	MultiMeshInstance3D *node;
+	Panel *panel = nullptr;
+	MultiMeshInstance3D *node = nullptr;
 
-	LineEdit *surface_source;
-	LineEdit *mesh_source;
+	LineEdit *surface_source = nullptr;
+	LineEdit *mesh_source = nullptr;
 
-	SceneTreeDialog *std;
+	SceneTreeDialog *std = nullptr;
 
-	ConfirmationDialog *populate_dialog;
-	OptionButton *populate_axis;
-	HSlider *populate_rotate_random;
-	HSlider *populate_tilt_random;
-	SpinBox *populate_scale_random;
-	SpinBox *populate_scale;
-	SpinBox *populate_amount;
+	ConfirmationDialog *populate_dialog = nullptr;
+	OptionButton *populate_axis = nullptr;
+	HSlider *populate_rotate_random = nullptr;
+	HSlider *populate_tilt_random = nullptr;
+	SpinBox *populate_scale_random = nullptr;
+	SpinBox *populate_scale = nullptr;
+	SpinBox *populate_amount = nullptr;
 
 	enum Menu {
 		MENU_OPTION_POPULATE
@@ -85,7 +85,7 @@ public:
 class MultiMeshEditorPlugin : public EditorPlugin {
 	GDCLASS(MultiMeshEditorPlugin, EditorPlugin);
 
-	MultiMeshEditor *multimesh_editor;
+	MultiMeshEditor *multimesh_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "MultiMesh"; }

editor/plugins/navigation_polygon_editor_plugin.h

@@ -37,7 +37,7 @@
 class NavigationPolygonEditor : public AbstractPolygon2DEditor {
 	GDCLASS(NavigationPolygonEditor, AbstractPolygon2DEditor);
 
-	NavigationRegion2D *node;
+	NavigationRegion2D *node = nullptr;
 
 	Ref<NavigationPolygon> _ensure_navpoly() const;
 

editor/plugins/node_3d_editor_gizmos.h

@@ -70,14 +70,14 @@ class EditorNode3DGizmo : public Node3DGizmo {
 	bool valid;
 	bool hidden;
 	Vector<Instance> instances;
-	Node3D *spatial_node;
+	Node3D *spatial_node = nullptr;
 
 	void _set_spatial_node(Node *p_node) { set_spatial_node(Object::cast_to<Node3D>(p_node)); }
 
 protected:
 	static void _bind_methods();
 
-	EditorNode3DGizmoPlugin *gizmo_plugin;
+	EditorNode3DGizmoPlugin *gizmo_plugin = nullptr;
 
 	GDVIRTUAL0(_redraw)
 	GDVIRTUAL2RC(String, _get_handle_name, int, bool)
@@ -618,7 +618,7 @@ public:
 class Joint3DGizmoPlugin : public EditorNode3DGizmoPlugin {
 	GDCLASS(Joint3DGizmoPlugin, EditorNode3DGizmoPlugin);
 
-	Timer *update_timer;
+	Timer *update_timer = nullptr;
 	uint64_t update_idx = 0;
 
 	void incremental_update_gizmos();

editor/plugins/node_3d_editor_plugin.h

@@ -190,27 +190,27 @@ private:
 	ViewType view_type;
 	void _menu_option(int p_option);
 	void _set_auto_orthogonal();
-	Node3D *preview_node;
-	AABB *preview_bounds;
+	Node3D *preview_node = nullptr;
+	AABB *preview_bounds = nullptr;
 	Vector<String> selected_files;
-	AcceptDialog *accept;
+	AcceptDialog *accept = nullptr;
 
-	Node *target_node;
+	Node *target_node = nullptr;
 	Point2 drop_pos;
 
-	EditorData *editor_data;
-	EditorSelection *editor_selection;
-	UndoRedo *undo_redo;
+	EditorData *editor_data = nullptr;
+	EditorSelection *editor_selection = nullptr;
+	UndoRedo *undo_redo = nullptr;
 
-	CheckBox *preview_camera;
-	SubViewportContainer *subviewport_container;
+	CheckBox *preview_camera = nullptr;
+	SubViewportContainer *subviewport_container = nullptr;
 
-	MenuButton *view_menu;
-	PopupMenu *display_submenu;
+	MenuButton *view_menu = nullptr;
+	PopupMenu *display_submenu = nullptr;
 
-	Control *surface;
-	SubViewport *viewport;
-	Camera3D *camera;
+	Control *surface = nullptr;
+	SubViewport *viewport = nullptr;
+	Camera3D *camera = nullptr;
 	bool transforming;
 	bool orthogonal;
 	bool auto_orthogonal;
@@ -221,17 +221,17 @@ private:
 	real_t freelook_speed;
 	Vector2 previous_mouse_position;
 
-	Label *info_label;
-	Label *cinema_label;
-	Label *locked_label;
-	Label *zoom_limit_label;
+	Label *info_label = nullptr;
+	Label *cinema_label = nullptr;
+	Label *locked_label = nullptr;
+	Label *zoom_limit_label = nullptr;
 
-	VBoxContainer *top_right_vbox;
-	ViewportRotationControl *rotation_control;
-	Gradient *frame_time_gradient;
-	Label *cpu_time_label;
-	Label *gpu_time_label;
-	Label *fps_label;
+	VBoxContainer *top_right_vbox = nullptr;
+	ViewportRotationControl *rotation_control = nullptr;
+	Gradient *frame_time_gradient = nullptr;
+	Label *cpu_time_label = nullptr;
+	Label *gpu_time_label = nullptr;
+	Label *fps_label = nullptr;
 
 	struct _RayResult {
 		Node3D *item = nullptr;
@@ -274,7 +274,7 @@ private:
 	bool clicked_wants_append;
 	bool selection_in_progress = false;
 
-	PopupMenu *selection_menu;
+	PopupMenu *selection_menu = nullptr;
 
 	enum NavigationZoomStyle {
 		NAVIGATION_ZOOM_VERTICAL,
@@ -375,9 +375,9 @@ private:
 
 	void _sinput(const Ref<InputEvent> &p_event);
 	void _update_freelook(real_t delta);
-	Node3DEditor *spatial_editor;
+	Node3DEditor *spatial_editor = nullptr;
 
-	Camera3D *previewing;
+	Camera3D *previewing = nullptr;
 	Camera3D *preview = nullptr;
 
 	bool previewing_cinema;
@@ -455,7 +455,7 @@ public:
 	Transform3D original_local;
 	Transform3D last_xform; // last transform
 	bool last_xform_dirty;
-	Node3D *sp;
+	Node3D *sp = nullptr;
 	RID sbox_instance;
 	RID sbox_instance_offset;
 	RID sbox_instance_xray;
@@ -537,13 +537,13 @@ public:
 	};
 
 private:
-	EditorSelection *editor_selection;
+	EditorSelection *editor_selection = nullptr;
 
-	Node3DEditorViewportContainer *viewport_base;
+	Node3DEditorViewportContainer *viewport_base = nullptr;
 	Node3DEditorViewport *viewports[VIEWPORTS_COUNT];
-	VSplitContainer *shader_split;
-	HSplitContainer *left_panel_split;
-	HSplitContainer *right_panel_split;
+	VSplitContainer *shader_split = nullptr;
+	HSplitContainer *left_panel_split = nullptr;
+	HSplitContainer *right_panel_split = nullptr;
 
 	/////
 
@@ -588,7 +588,7 @@ private:
 	Ref<StandardMaterial3D> cursor_material;
 
 	// Scene drag and drop support
-	Node3D *preview_node;
+	Node3D *preview_node = nullptr;
 	AABB preview_bounds;
 
 	struct Gizmo {
@@ -628,31 +628,31 @@ private:
 	Button *tool_button[TOOL_MAX];
 	Button *tool_option_button[TOOL_OPT_MAX];
 
-	MenuButton *transform_menu;
-	PopupMenu *gizmos_menu;
-	MenuButton *view_menu;
+	MenuButton *transform_menu = nullptr;
+	PopupMenu *gizmos_menu = nullptr;
+	MenuButton *view_menu = nullptr;
 
-	AcceptDialog *accept;
+	AcceptDialog *accept = nullptr;
 
-	ConfirmationDialog *snap_dialog;
-	ConfirmationDialog *xform_dialog;
-	ConfirmationDialog *settings_dialog;
+	ConfirmationDialog *snap_dialog = nullptr;
+	ConfirmationDialog *xform_dialog = nullptr;
+	ConfirmationDialog *settings_dialog = nullptr;
 
 	bool snap_enabled;
 	bool snap_key_enabled;
-	LineEdit *snap_translate;
-	LineEdit *snap_rotate;
-	LineEdit *snap_scale;
+	LineEdit *snap_translate = nullptr;
+	LineEdit *snap_rotate = nullptr;
+	LineEdit *snap_scale = nullptr;
 
 	LineEdit *xform_translate[3];
 	LineEdit *xform_rotate[3];
 	LineEdit *xform_scale[3];
-	OptionButton *xform_type;
+	OptionButton *xform_type = nullptr;
 
-	VBoxContainer *settings_vbc;
-	SpinBox *settings_fov;
-	SpinBox *settings_znear;
-	SpinBox *settings_zfar;
+	VBoxContainer *settings_vbc = nullptr;
+	SpinBox *settings_fov = nullptr;
+	SpinBox *settings_znear = nullptr;
+	SpinBox *settings_zfar = nullptr;
 
 	void _snap_changed();
 	void _snap_update();
@@ -662,14 +662,14 @@ private:
 	void _menu_gizmo_toggled(int p_option);
 	void _update_camera_override_button(bool p_game_running);
 	void _update_camera_override_viewport(Object *p_viewport);
-	HBoxContainer *hbc_menu;
+	HBoxContainer *hbc_menu = nullptr;
 	// Used for secondary menu items which are displayed depending on the currently selected node
 	// (such as MeshInstance's "Mesh" menu).
-	PanelContainer *context_menu_container;
-	HBoxContainer *hbc_context_menu;
+	PanelContainer *context_menu_container = nullptr;
+	HBoxContainer *hbc_context_menu = nullptr;
 
 	void _generate_selection_boxes();
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	int camera_override_viewport_id;
 
@@ -683,13 +683,13 @@ private:
 
 	void _toggle_maximize_view(Object *p_viewport);
 
-	Node *custom_camera;
+	Node *custom_camera = nullptr;
 
 	Object *_get_editor_data(Object *p_what);
 
 	Ref<Environment> viewport_environment;
 
-	Node3D *selected;
+	Node3D *selected = nullptr;
 
 	void _request_gizmo(Object *p_obj);
 	void _set_subgizmo_selection(Object *p_obj, Ref<Node3DGizmo> p_gizmo, int p_id, Transform3D p_transform = Transform3D());
@@ -712,18 +712,18 @@ private:
 	uint32_t world_env_count = 0;
 	uint32_t directional_light_count = 0;
 
-	Button *sun_button;
-	Label *sun_state;
-	Label *sun_title;
-	VBoxContainer *sun_vb;
-	Popup *sun_environ_popup;
-	Control *sun_direction;
-	EditorSpinSlider *sun_angle_altitude;
-	EditorSpinSlider *sun_angle_azimuth;
-	ColorPickerButton *sun_color;
-	EditorSpinSlider *sun_energy;
-	EditorSpinSlider *sun_max_distance;
-	Button *sun_add_to_scene;
+	Button *sun_button = nullptr;
+	Label *sun_state = nullptr;
+	Label *sun_title = nullptr;
+	VBoxContainer *sun_vb = nullptr;
+	Popup *sun_environ_popup = nullptr;
+	Control *sun_direction = nullptr;
+	EditorSpinSlider *sun_angle_altitude = nullptr;
+	EditorSpinSlider *sun_angle_azimuth = nullptr;
+	ColorPickerButton *sun_color = nullptr;
+	EditorSpinSlider *sun_energy = nullptr;
+	EditorSpinSlider *sun_max_distance = nullptr;
+	Button *sun_add_to_scene = nullptr;
 
 	void _sun_direction_draw();
 	void _sun_direction_input(const Ref<InputEvent> &p_event);
@@ -734,23 +734,23 @@ private:
 	Ref<Shader> sun_direction_shader;
 	Ref<ShaderMaterial> sun_direction_material;
 
-	Button *environ_button;
-	Label *environ_state;
-	Label *environ_title;
-	VBoxContainer *environ_vb;
-	ColorPickerButton *environ_sky_color;
-	ColorPickerButton *environ_ground_color;
-	EditorSpinSlider *environ_energy;
-	Button *environ_ao_button;
-	Button *environ_glow_button;
-	Button *environ_tonemap_button;
-	Button *environ_gi_button;
-	Button *environ_add_to_scene;
+	Button *environ_button = nullptr;
+	Label *environ_state = nullptr;
+	Label *environ_title = nullptr;
+	VBoxContainer *environ_vb = nullptr;
+	ColorPickerButton *environ_sky_color = nullptr;
+	ColorPickerButton *environ_ground_color = nullptr;
+	EditorSpinSlider *environ_energy = nullptr;
+	Button *environ_ao_button = nullptr;
+	Button *environ_glow_button = nullptr;
+	Button *environ_tonemap_button = nullptr;
+	Button *environ_gi_button = nullptr;
+	Button *environ_add_to_scene = nullptr;
 
-	Button *sun_environ_settings;
+	Button *sun_environ_settings = nullptr;
 
-	DirectionalLight3D *preview_sun;
-	WorldEnvironment *preview_environment;
+	DirectionalLight3D *preview_sun = nullptr;
+	WorldEnvironment *preview_environment = nullptr;
 	Ref<Environment> environment;
 	Ref<ProceduralSkyMaterial> sky_material;
 
@@ -868,7 +868,7 @@ public:
 class Node3DEditorPlugin : public EditorPlugin {
 	GDCLASS(Node3DEditorPlugin, EditorPlugin);
 
-	Node3DEditor *spatial_editor;
+	Node3DEditor *spatial_editor = nullptr;
 
 public:
 	Node3DEditor *get_spatial_editor() { return spatial_editor; }

editor/plugins/occluder_instance_3d_editor_plugin.h

@@ -40,11 +40,11 @@ class EditorFileDialog;
 class OccluderInstance3DEditorPlugin : public EditorPlugin {
 	GDCLASS(OccluderInstance3DEditorPlugin, EditorPlugin);
 
-	OccluderInstance3D *occluder_instance;
+	OccluderInstance3D *occluder_instance = nullptr;
 
-	Button *bake;
+	Button *bake = nullptr;
 
-	EditorFileDialog *file_dialog;
+	EditorFileDialog *file_dialog = nullptr;
 
 	void _bake_select_file(const String &p_file);
 	void _bake();

editor/plugins/ot_features_plugin.h

@@ -38,7 +38,7 @@
 
 class OpenTypeFeaturesEditor : public EditorProperty {
 	GDCLASS(OpenTypeFeaturesEditor, EditorProperty);
-	EditorSpinSlider *spin;
+	EditorSpinSlider *spin = nullptr;
 	bool setting = true;
 	void _value_changed(double p_val);
 	Button *button = nullptr;

editor/plugins/path_2d_editor_plugin.h

@@ -40,14 +40,14 @@ class CanvasItemEditor;
 class Path2DEditor : public HBoxContainer {
 	GDCLASS(Path2DEditor, HBoxContainer);
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
-	CanvasItemEditor *canvas_item_editor;
-	Panel *panel;
-	Path2D *node;
+	CanvasItemEditor *canvas_item_editor = nullptr;
+	Panel *panel = nullptr;
+	Path2D *node = nullptr;
 
-	HBoxContainer *base_hb;
-	Separator *sep;
+	HBoxContainer *base_hb = nullptr;
+	Separator *sep = nullptr;
 
 	enum Mode {
 		MODE_CREATE,
@@ -58,12 +58,12 @@ class Path2DEditor : public HBoxContainer {
 	};
 
 	Mode mode;
-	Button *curve_create;
-	Button *curve_edit;
-	Button *curve_edit_curve;
-	Button *curve_del;
-	Button *curve_close;
-	MenuButton *handle_menu;
+	Button *curve_create = nullptr;
+	Button *curve_edit = nullptr;
+	Button *curve_edit_curve = nullptr;
+	Button *curve_del = nullptr;
+	Button *curve_close = nullptr;
+	MenuButton *handle_menu = nullptr;
 
 	bool mirror_handle_angle;
 	bool mirror_handle_length;
@@ -110,7 +110,7 @@ public:
 class Path2DEditorPlugin : public EditorPlugin {
 	GDCLASS(Path2DEditorPlugin, EditorPlugin);
 
-	Path2DEditor *path2d_editor;
+	Path2DEditor *path2d_editor = nullptr;
 
 public:
 	virtual bool forward_canvas_gui_input(const Ref<InputEvent> &p_event) override { return path2d_editor->forward_gui_input(p_event); }

editor/plugins/path_3d_editor_plugin.h

@@ -40,7 +40,7 @@
 class Path3DGizmo : public EditorNode3DGizmo {
 	GDCLASS(Path3DGizmo, EditorNode3DGizmo);
 
-	Path3D *path;
+	Path3D *path = nullptr;
 	mutable Vector3 original;
 	mutable float orig_in_length;
 	mutable float orig_out_length;
@@ -70,14 +70,14 @@ public:
 class Path3DEditorPlugin : public EditorPlugin {
 	GDCLASS(Path3DEditorPlugin, EditorPlugin);
 
-	Separator *sep;
-	Button *curve_create;
-	Button *curve_edit;
-	Button *curve_del;
-	Button *curve_close;
-	MenuButton *handle_menu;
+	Separator *sep = nullptr;
+	Button *curve_create = nullptr;
+	Button *curve_edit = nullptr;
+	Button *curve_del = nullptr;
+	Button *curve_close = nullptr;
+	MenuButton *handle_menu = nullptr;
 
-	Path3D *path;
+	Path3D *path = nullptr;
 
 	void _update_theme();
 

editor/plugins/physical_bone_3d_editor_plugin.h

@@ -39,8 +39,8 @@
 class PhysicalBone3DEditor : public Object {
 	GDCLASS(PhysicalBone3DEditor, Object);
 
-	HBoxContainer *spatial_editor_hb;
-	Button *button_transform_joint;
+	HBoxContainer *spatial_editor_hb = nullptr;
+	Button *button_transform_joint = nullptr;
 
 	PhysicalBone3D *selected = nullptr;
 

editor/plugins/polygon_2d_editor_plugin.h

@@ -68,38 +68,38 @@ class Polygon2DEditor : public AbstractPolygon2DEditor {
 	Button *uv_edit_mode[4];
 	Ref<ButtonGroup> uv_edit_group;
 
-	Polygon2D *node;
+	Polygon2D *node = nullptr;
 
 	UVMode uv_mode;
-	AcceptDialog *uv_edit;
+	AcceptDialog *uv_edit = nullptr;
 	Button *uv_button[UV_MODE_MAX];
-	Button *b_snap_enable;
-	Button *b_snap_grid;
-	Panel *uv_edit_draw;
-	HSlider *uv_zoom;
-	SpinBox *uv_zoom_value;
-	HScrollBar *uv_hscroll;
-	VScrollBar *uv_vscroll;
-	MenuButton *uv_menu;
-	TextureRect *uv_icon_zoom;
+	Button *b_snap_enable = nullptr;
+	Button *b_snap_grid = nullptr;
+	Panel *uv_edit_draw = nullptr;
+	HSlider *uv_zoom = nullptr;
+	SpinBox *uv_zoom_value = nullptr;
+	HScrollBar *uv_hscroll = nullptr;
+	VScrollBar *uv_vscroll = nullptr;
+	MenuButton *uv_menu = nullptr;
+	TextureRect *uv_icon_zoom = nullptr;
 
 	Ref<ViewPanner> uv_panner;
 	void _uv_scroll_callback(Vector2 p_scroll_vec, bool p_alt);
 	void _uv_pan_callback(Vector2 p_scroll_vec);
 	void _uv_zoom_callback(Vector2 p_scroll_vec, Vector2 p_origin, bool p_alt);
 
-	VBoxContainer *bone_scroll_main_vb;
-	ScrollContainer *bone_scroll;
-	VBoxContainer *bone_scroll_vb;
-	Button *sync_bones;
-	HSlider *bone_paint_strength;
-	SpinBox *bone_paint_radius;
-	Label *bone_paint_radius_label;
+	VBoxContainer *bone_scroll_main_vb = nullptr;
+	ScrollContainer *bone_scroll = nullptr;
+	VBoxContainer *bone_scroll_vb = nullptr;
+	Button *sync_bones = nullptr;
+	HSlider *bone_paint_strength = nullptr;
+	SpinBox *bone_paint_radius = nullptr;
+	Label *bone_paint_radius_label = nullptr;
 	bool bone_painting;
 	int bone_painting_bone;
 	Vector<float> prev_weights;
 	Vector2 bone_paint_pos;
-	AcceptDialog *grid_settings;
+	AcceptDialog *grid_settings = nullptr;
 
 	void _sync_bones();
 	void _update_bone_list();
@@ -123,9 +123,9 @@ class Polygon2DEditor : public AbstractPolygon2DEditor {
 	Vector2 uv_drag_from;
 	bool updating_uv_scroll;
 
-	AcceptDialog *error;
+	AcceptDialog *error = nullptr;
 
-	Button *button_uv;
+	Button *button_uv = nullptr;
 
 	bool use_snap;
 	bool snap_show_grid;

editor/plugins/polygon_3d_editor_plugin.h

@@ -41,7 +41,7 @@ class CanvasItemEditor;
 class Polygon3DEditor : public HBoxContainer {
 	GDCLASS(Polygon3DEditor, HBoxContainer);
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	enum Mode {
 		MODE_CREATE,
 		MODE_EDIT,
@@ -50,21 +50,21 @@ class Polygon3DEditor : public HBoxContainer {
 
 	Mode mode;
 
-	Button *button_create;
-	Button *button_edit;
+	Button *button_create = nullptr;
+	Button *button_edit = nullptr;
 
 	Ref<StandardMaterial3D> line_material;
 	Ref<StandardMaterial3D> handle_material;
 
-	Panel *panel;
-	Node3D *node;
+	Panel *panel = nullptr;
+	Node3D *node = nullptr;
 	Ref<Resource> node_resource;
 	Ref<ImmediateMesh> imesh;
-	MeshInstance3D *imgeom;
-	MeshInstance3D *pointsm;
+	MeshInstance3D *imgeom = nullptr;
+	MeshInstance3D *pointsm = nullptr;
 	Ref<ArrayMesh> m;
 
-	MenuButton *options;
+	MenuButton *options = nullptr;
 
 	int edited_point;
 	Vector2 edited_point_pos;
@@ -98,7 +98,7 @@ public:
 class Polygon3DEditorPlugin : public EditorPlugin {
 	GDCLASS(Polygon3DEditorPlugin, EditorPlugin);
 
-	Polygon3DEditor *polygon_editor;
+	Polygon3DEditor *polygon_editor = nullptr;
 
 public:
 	virtual EditorPlugin::AfterGUIInput forward_spatial_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event) override { return polygon_editor->forward_spatial_gui_input(p_camera, p_event); }

editor/plugins/replication_editor_plugin.h

@@ -51,7 +51,7 @@ private:
 
 	Ref<SceneReplicationConfig> config;
 	NodePath deleting;
-	Tree *tree;
+	Tree *tree = nullptr;
 	bool keying = false;
 
 	Ref<Texture2D> _get_class_icon(const Node *p_node);
@@ -84,7 +84,7 @@ class ReplicationEditorPlugin : public EditorPlugin {
 	GDCLASS(ReplicationEditorPlugin, EditorPlugin);
 
 private:
-	ReplicationEditor *repl_editor;
+	ReplicationEditor *repl_editor = nullptr;
 
 	void _node_removed(Node *p_node);
 	void _keying_changed();

editor/plugins/resource_preloader_editor_plugin.h

@@ -47,16 +47,16 @@ class ResourcePreloaderEditor : public PanelContainer {
 		BUTTON_REMOVE
 	};
 
-	Button *load;
-	Button *paste;
-	Tree *tree;
+	Button *load = nullptr;
+	Button *paste = nullptr;
+	Tree *tree = nullptr;
 	bool loading_scene;
 
-	EditorFileDialog *file;
+	EditorFileDialog *file = nullptr;
 
-	AcceptDialog *dialog;
+	AcceptDialog *dialog = nullptr;
 
-	ResourcePreloader *preloader;
+	ResourcePreloader *preloader = nullptr;
 
 	void _load_pressed();
 	void _files_load_request(const Vector<String> &p_paths);
@@ -66,7 +66,7 @@ class ResourcePreloaderEditor : public PanelContainer {
 	void _cell_button_pressed(Object *p_item, int p_column, int p_id);
 	void _item_edited();
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	Variant get_drag_data_fw(const Point2 &p_point, Control *p_from);
 	bool can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const;
@@ -87,8 +87,8 @@ public:
 class ResourcePreloaderEditorPlugin : public EditorPlugin {
 	GDCLASS(ResourcePreloaderEditorPlugin, EditorPlugin);
 
-	ResourcePreloaderEditor *preloader_editor;
-	Button *button;
+	ResourcePreloaderEditor *preloader_editor = nullptr;
+	Button *button = nullptr;
 
 public:
 	virtual String get_name() const override { return "ResourcePreloader"; }

editor/plugins/root_motion_editor_plugin.h

@@ -38,12 +38,12 @@
 
 class EditorPropertyRootMotion : public EditorProperty {
 	GDCLASS(EditorPropertyRootMotion, EditorProperty);
-	Button *assign;
-	Button *clear;
+	Button *assign = nullptr;
+	Button *clear = nullptr;
 	NodePath base_hint;
 
-	ConfirmationDialog *filter_dialog;
-	Tree *filters;
+	ConfirmationDialog *filter_dialog = nullptr;
+	Tree *filters = nullptr;
 
 	void _confirmed();
 	void _node_assign();

editor/plugins/script_editor_plugin.h

@@ -102,8 +102,8 @@ public:
 class ScriptEditorQuickOpen : public ConfirmationDialog {
 	GDCLASS(ScriptEditorQuickOpen, ConfirmationDialog);
 
-	LineEdit *search_box;
-	Tree *search_options;
+	LineEdit *search_box = nullptr;
+	Tree *search_options = nullptr;
 	String function;
 
 	void _update_search();
@@ -242,55 +242,55 @@ class ScriptEditor : public PanelContainer {
 		DISPLAY_FULL_PATH,
 	};
 
-	HBoxContainer *menu_hb;
-	MenuButton *file_menu;
-	MenuButton *edit_menu;
-	MenuButton *script_search_menu;
-	MenuButton *debug_menu;
-	PopupMenu *context_menu;
-	Timer *autosave_timer;
+	HBoxContainer *menu_hb = nullptr;
+	MenuButton *file_menu = nullptr;
+	MenuButton *edit_menu = nullptr;
+	MenuButton *script_search_menu = nullptr;
+	MenuButton *debug_menu = nullptr;
+	PopupMenu *context_menu = nullptr;
+	Timer *autosave_timer = nullptr;
 	uint64_t idle;
 
-	PopupMenu *recent_scripts;
-	PopupMenu *theme_submenu;
+	PopupMenu *recent_scripts = nullptr;
+	PopupMenu *theme_submenu = nullptr;
 
-	Button *help_search;
-	Button *site_search;
-	EditorHelpSearch *help_search_dialog;
+	Button *help_search = nullptr;
+	Button *site_search = nullptr;
+	EditorHelpSearch *help_search_dialog = nullptr;
 
-	ItemList *script_list;
-	HSplitContainer *script_split;
-	ItemList *members_overview;
-	LineEdit *filter_scripts;
-	LineEdit *filter_methods;
-	VBoxContainer *scripts_vbox;
-	VBoxContainer *overview_vbox;
-	HBoxContainer *buttons_hbox;
-	Label *filename;
-	Button *members_overview_alphabeta_sort_button;
+	ItemList *script_list = nullptr;
+	HSplitContainer *script_split = nullptr;
+	ItemList *members_overview = nullptr;
+	LineEdit *filter_scripts = nullptr;
+	LineEdit *filter_methods = nullptr;
+	VBoxContainer *scripts_vbox = nullptr;
+	VBoxContainer *overview_vbox = nullptr;
+	HBoxContainer *buttons_hbox = nullptr;
+	Label *filename = nullptr;
+	Button *members_overview_alphabeta_sort_button = nullptr;
 	bool members_overview_enabled;
-	ItemList *help_overview;
+	ItemList *help_overview = nullptr;
 	bool help_overview_enabled;
-	VSplitContainer *list_split;
-	TabContainer *tab_container;
-	EditorFileDialog *file_dialog;
-	AcceptDialog *error_dialog;
-	ConfirmationDialog *erase_tab_confirm;
-	ScriptCreateDialog *script_create_dialog;
-	Button *scripts_visible;
-	FindReplaceBar *find_replace_bar;
+	VSplitContainer *list_split = nullptr;
+	TabContainer *tab_container = nullptr;
+	EditorFileDialog *file_dialog = nullptr;
+	AcceptDialog *error_dialog = nullptr;
+	ConfirmationDialog *erase_tab_confirm = nullptr;
+	ScriptCreateDialog *script_create_dialog = nullptr;
+	Button *scripts_visible = nullptr;
+	FindReplaceBar *find_replace_bar = nullptr;
 
 	String current_theme;
 
-	TextureRect *script_icon;
-	Label *script_name_label;
+	TextureRect *script_icon = nullptr;
+	Label *script_name_label = nullptr;
 
-	Button *script_back;
-	Button *script_forward;
+	Button *script_back = nullptr;
+	Button *script_forward = nullptr;
 
-	FindInFilesDialog *find_in_files_dialog;
-	FindInFilesPanel *find_in_files;
-	Button *find_in_files_button;
+	FindInFilesDialog *find_in_files_dialog = nullptr;
+	FindInFilesPanel *find_in_files = nullptr;
+	Button *find_in_files_button = nullptr;
 
 	enum {
 		SCRIPT_EDITOR_FUNC_MAX = 32,
@@ -320,8 +320,8 @@ class ScriptEditor : public PanelContainer {
 	bool _has_script_tab() const;
 	void _prepare_file_menu();
 
-	Tree *disk_changed_list;
-	ConfirmationDialog *disk_changed;
+	Tree *disk_changed_list = nullptr;
+	ConfirmationDialog *disk_changed = nullptr;
 
 	bool restoring_layout;
 
@@ -361,7 +361,7 @@ class ScriptEditor : public PanelContainer {
 
 	void _update_selected_editor_menu();
 
-	EditorScriptCodeCompletionCache *completion_cache;
+	EditorScriptCodeCompletionCache *completion_cache = nullptr;
 
 	void _editor_stop();
 
@@ -528,7 +528,7 @@ public:
 class ScriptEditorPlugin : public EditorPlugin {
 	GDCLASS(ScriptEditorPlugin, EditorPlugin);
 
-	ScriptEditor *script_editor;
+	ScriptEditor *script_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "Script"; }

editor/plugins/shader_editor_plugin.h

@@ -108,19 +108,19 @@ class ShaderEditor : public PanelContainer {
 		HELP_DOCS,
 	};
 
-	MenuButton *edit_menu;
-	MenuButton *search_menu;
-	PopupMenu *bookmarks_menu;
-	MenuButton *help_menu;
-	PopupMenu *context_menu;
+	MenuButton *edit_menu = nullptr;
+	MenuButton *search_menu = nullptr;
+	PopupMenu *bookmarks_menu = nullptr;
+	MenuButton *help_menu = nullptr;
+	PopupMenu *context_menu = nullptr;
 	RichTextLabel *warnings_panel = nullptr;
 	uint64_t idle;
 
-	GotoLineDialog *goto_line_dialog;
-	ConfirmationDialog *erase_tab_confirm;
-	ConfirmationDialog *disk_changed;
+	GotoLineDialog *goto_line_dialog = nullptr;
+	ConfirmationDialog *erase_tab_confirm = nullptr;
+	ConfirmationDialog *disk_changed = nullptr;
 
-	ShaderTextEditor *shader_editor;
+	ShaderTextEditor *shader_editor = nullptr;
 
 	void _menu_option(int p_option);
 	mutable Ref<Shader> shader;
@@ -161,8 +161,8 @@ class ShaderEditorPlugin : public EditorPlugin {
 	GDCLASS(ShaderEditorPlugin, EditorPlugin);
 
 	bool _2d;
-	ShaderEditor *shader_editor;
-	Button *button;
+	ShaderEditor *shader_editor = nullptr;
+	Button *button = nullptr;
 
 public:
 	virtual String get_name() const override { return "Shader"; }

editor/plugins/shader_file_editor_plugin.h

@@ -48,10 +48,10 @@ class ShaderFileEditor : public PanelContainer {
 
 	Ref<RDShaderFile> shader_file;
 
-	HBoxContainer *stage_hb;
-	ItemList *versions;
+	HBoxContainer *stage_hb = nullptr;
+	ItemList *versions = nullptr;
 	Button *stages[RD::SHADER_STAGE_MAX];
-	RichTextLabel *error_text;
+	RichTextLabel *error_text = nullptr;
 
 	void _update_version(const StringName &p_version_txt, const RenderingDevice::ShaderStage p_stage);
 	void _version_selected(int p_stage);
@@ -74,8 +74,8 @@ public:
 class ShaderFileEditorPlugin : public EditorPlugin {
 	GDCLASS(ShaderFileEditorPlugin, EditorPlugin);
 
-	ShaderFileEditor *shader_editor;
-	Button *button;
+	ShaderFileEditor *shader_editor = nullptr;
+	Button *button = nullptr;
 
 public:
 	virtual String get_name() const override { return "ShaderFile"; }

editor/plugins/skeleton_2d_editor_plugin.h

@@ -43,10 +43,10 @@ class Skeleton2DEditor : public Control {
 		MENU_OPTION_MAKE_REST,
 	};
 
-	Skeleton2D *node;
+	Skeleton2D *node = nullptr;
 
-	MenuButton *options;
-	AcceptDialog *err_dialog;
+	MenuButton *options = nullptr;
+	AcceptDialog *err_dialog = nullptr;
 
 	void _menu_option(int p_option);
 
@@ -65,7 +65,7 @@ public:
 class Skeleton2DEditorPlugin : public EditorPlugin {
 	GDCLASS(Skeleton2DEditorPlugin, EditorPlugin);
 
-	Skeleton2DEditor *sprite_editor;
+	Skeleton2DEditor *sprite_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "Skeleton2D"; }

editor/plugins/skeleton_3d_editor_plugin.h

@@ -60,10 +60,10 @@ class BoneTransformEditor : public VBoxContainer {
 
 	Rect2 background_rects[5];
 
-	Skeleton3D *skeleton;
+	Skeleton3D *skeleton = nullptr;
 	// String property;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	bool toggle_enabled = false;
 	bool updating = false;
@@ -108,26 +108,26 @@ class Skeleton3DEditor : public VBoxContainer {
 		Transform3D relative_rest; // Relative to skeleton node.
 	};
 
-	EditorInspectorPluginSkeleton *editor_plugin;
+	EditorInspectorPluginSkeleton *editor_plugin = nullptr;
 
-	Skeleton3D *skeleton;
+	Skeleton3D *skeleton = nullptr;
 
 	Tree *joint_tree = nullptr;
 	BoneTransformEditor *rest_editor = nullptr;
 	BoneTransformEditor *pose_editor = nullptr;
 
-	VSeparator *separator;
+	VSeparator *separator = nullptr;
 	MenuButton *skeleton_options = nullptr;
-	Button *edit_mode_button;
+	Button *edit_mode_button = nullptr;
 
 	bool edit_mode = false;
 
-	HBoxContainer *animation_hb;
-	Button *key_loc_button;
-	Button *key_rot_button;
-	Button *key_scale_button;
-	Button *key_insert_button;
-	Button *key_insert_all_button;
+	HBoxContainer *animation_hb = nullptr;
+	Button *key_loc_button = nullptr;
+	Button *key_rot_button = nullptr;
+	Button *key_scale_button = nullptr;
+	Button *key_insert_button = nullptr;
+	Button *key_insert_all_button = nullptr;
 
 	EditorFileDialog *file_dialog = nullptr;
 
@@ -163,7 +163,7 @@ class Skeleton3DEditor : public VBoxContainer {
 	void set_bone_options_enabled(const bool p_bone_options_enabled);
 
 	// Handle.
-	MeshInstance3D *handles_mesh_instance;
+	MeshInstance3D *handles_mesh_instance = nullptr;
 	Ref<ImmediateMesh> handles_mesh;
 	Ref<ShaderMaterial> handle_material;
 	Ref<Shader> handle_shader;
@@ -220,7 +220,7 @@ class EditorInspectorPluginSkeleton : public EditorInspectorPlugin {
 
 	friend class Skeleton3DEditorPlugin;
 
-	Skeleton3DEditor *skel_editor;
+	Skeleton3DEditor *skel_editor = nullptr;
 
 public:
 	virtual bool can_handle(Object *p_object) override;
@@ -230,7 +230,7 @@ public:
 class Skeleton3DEditorPlugin : public EditorPlugin {
 	GDCLASS(Skeleton3DEditorPlugin, EditorPlugin);
 
-	EditorInspectorPluginSkeleton *skeleton_plugin;
+	EditorInspectorPluginSkeleton *skeleton_plugin = nullptr;
 
 public:
 	virtual EditorPlugin::AfterGUIInput forward_spatial_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event) override;

editor/plugins/skeleton_ik_3d_editor_plugin.h

@@ -38,9 +38,9 @@ class SkeletonIK3D;
 class SkeletonIK3DEditorPlugin : public EditorPlugin {
 	GDCLASS(SkeletonIK3DEditorPlugin, EditorPlugin);
 
-	SkeletonIK3D *skeleton_ik;
+	SkeletonIK3D *skeleton_ik = nullptr;
 
-	Button *play_btn;
+	Button *play_btn = nullptr;
 
 	void _play();
 

editor/plugins/sprite_2d_editor_plugin.h

@@ -47,16 +47,16 @@ class Sprite2DEditor : public Control {
 
 	Menu selected_menu_item;
 
-	Sprite2D *node;
+	Sprite2D *node = nullptr;
 
-	MenuButton *options;
+	MenuButton *options = nullptr;
 
-	ConfirmationDialog *outline_dialog;
+	ConfirmationDialog *outline_dialog = nullptr;
 
-	AcceptDialog *err_dialog;
+	AcceptDialog *err_dialog = nullptr;
 
-	ConfirmationDialog *debug_uv_dialog;
-	Control *debug_uv;
+	ConfirmationDialog *debug_uv_dialog = nullptr;
+	Control *debug_uv = nullptr;
 	Vector<Vector2> uv_lines;
 	Vector<Vector<Vector2>> outline_lines;
 	Vector<Vector<Vector2>> computed_outline_lines;
@@ -64,10 +64,10 @@ class Sprite2DEditor : public Control {
 	Vector<Vector2> computed_uv;
 	Vector<int> computed_indices;
 
-	SpinBox *simplification;
-	SpinBox *grow_pixels;
-	SpinBox *shrink_pixels;
-	Button *update_preview;
+	SpinBox *simplification = nullptr;
+	SpinBox *grow_pixels = nullptr;
+	SpinBox *shrink_pixels = nullptr;
+	Button *update_preview = nullptr;
 
 	void _menu_option(int p_option);
 
@@ -98,7 +98,7 @@ public:
 class Sprite2DEditorPlugin : public EditorPlugin {
 	GDCLASS(Sprite2DEditorPlugin, EditorPlugin);
 
-	Sprite2DEditor *sprite_editor;
+	Sprite2DEditor *sprite_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "Sprite2D"; }

editor/plugins/sprite_frames_editor_plugin.h

@@ -48,48 +48,48 @@ class EditorFileDialog;
 class SpriteFramesEditor : public HSplitContainer {
 	GDCLASS(SpriteFramesEditor, HSplitContainer);
 
-	Button *load;
-	Button *load_sheet;
-	Button *_delete;
-	Button *copy;
-	Button *paste;
-	Button *empty;
-	Button *empty2;
-	Button *move_up;
-	Button *move_down;
-	Button *zoom_out;
-	Button *zoom_reset;
-	Button *zoom_in;
-	ItemList *tree;
+	Button *load = nullptr;
+	Button *load_sheet = nullptr;
+	Button *_delete = nullptr;
+	Button *copy = nullptr;
+	Button *paste = nullptr;
+	Button *empty = nullptr;
+	Button *empty2 = nullptr;
+	Button *move_up = nullptr;
+	Button *move_down = nullptr;
+	Button *zoom_out = nullptr;
+	Button *zoom_reset = nullptr;
+	Button *zoom_in = nullptr;
+	ItemList *tree = nullptr;
 	bool loading_scene;
 	int sel;
 
-	Button *new_anim;
-	Button *remove_anim;
+	Button *new_anim = nullptr;
+	Button *remove_anim = nullptr;
 
-	Tree *animations;
-	SpinBox *anim_speed;
-	CheckButton *anim_loop;
+	Tree *animations = nullptr;
+	SpinBox *anim_speed = nullptr;
+	CheckButton *anim_loop = nullptr;
 
-	EditorFileDialog *file;
+	EditorFileDialog *file = nullptr;
 
-	AcceptDialog *dialog;
+	AcceptDialog *dialog = nullptr;
 
-	SpriteFrames *frames;
+	SpriteFrames *frames = nullptr;
 
 	StringName edited_anim;
 
-	ConfirmationDialog *delete_dialog;
+	ConfirmationDialog *delete_dialog = nullptr;
 
-	ConfirmationDialog *split_sheet_dialog;
-	ScrollContainer *split_sheet_scroll;
-	TextureRect *split_sheet_preview;
-	SpinBox *split_sheet_h;
-	SpinBox *split_sheet_v;
-	Button *split_sheet_zoom_out;
-	Button *split_sheet_zoom_reset;
-	Button *split_sheet_zoom_in;
-	EditorFileDialog *file_split_sheet;
+	ConfirmationDialog *split_sheet_dialog = nullptr;
+	ScrollContainer *split_sheet_scroll = nullptr;
+	TextureRect *split_sheet_preview = nullptr;
+	SpinBox *split_sheet_h = nullptr;
+	SpinBox *split_sheet_v = nullptr;
+	Button *split_sheet_zoom_out = nullptr;
+	Button *split_sheet_zoom_reset = nullptr;
+	Button *split_sheet_zoom_in = nullptr;
+	EditorFileDialog *file_split_sheet = nullptr;
 	Set<int> frames_selected;
 	Set<int> frames_toggled_by_mouse_hover;
 	int last_frame_selected;
@@ -129,7 +129,7 @@ class SpriteFramesEditor : public HSplitContainer {
 
 	bool updating;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	Variant get_drag_data_fw(const Point2 &p_point, Control *p_from);
 	bool can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const;
@@ -164,8 +164,8 @@ public:
 class SpriteFramesEditorPlugin : public EditorPlugin {
 	GDCLASS(SpriteFramesEditorPlugin, EditorPlugin);
 
-	SpriteFramesEditor *frames_editor;
-	Button *button;
+	SpriteFramesEditor *frames_editor = nullptr;
+	Button *button = nullptr;
 
 public:
 	virtual String get_name() const override { return "SpriteFrames"; }

editor/plugins/style_box_editor_plugin.h

@@ -40,7 +40,7 @@
 class StyleBoxPreview : public VBoxContainer {
 	GDCLASS(StyleBoxPreview, VBoxContainer);
 
-	Control *preview;
+	Control *preview = nullptr;
 	Ref<StyleBox> stylebox;
 
 	void _sb_changed();

editor/plugins/text_control_editor_plugin.h

@@ -100,7 +100,7 @@ public:
 class TextControlEditorPlugin : public EditorPlugin {
 	GDCLASS(TextControlEditorPlugin, EditorPlugin);
 
-	TextControlEditor *text_ctl_editor;
+	TextControlEditor *text_ctl_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "TextControlFontEditor"; }

editor/plugins/texture_3d_editor_plugin.h

@@ -39,14 +39,14 @@
 class Texture3DEditor : public Control {
 	GDCLASS(Texture3DEditor, Control);
 
-	SpinBox *layer;
-	Label *info;
+	SpinBox *layer = nullptr;
+	Label *info = nullptr;
 	Ref<Texture3D> texture;
 
 	Ref<Shader> shader;
 	Ref<ShaderMaterial> material;
 
-	Control *texture_rect;
+	Control *texture_rect = nullptr;
 
 	void _make_shaders();
 

editor/plugins/texture_layered_editor_plugin.h

@@ -39,8 +39,8 @@
 class TextureLayeredEditor : public Control {
 	GDCLASS(TextureLayeredEditor, Control);
 
-	SpinBox *layer;
-	Label *info;
+	SpinBox *layer = nullptr;
+	Label *info = nullptr;
 	Ref<TextureLayered> texture;
 
 	Ref<Shader> shaders[3];
@@ -48,7 +48,7 @@ class TextureLayeredEditor : public Control {
 
 	float x_rot = 0;
 	float y_rot = 0;
-	Control *texture_rect;
+	Control *texture_rect = nullptr;
 
 	void _make_shaders();
 

editor/plugins/texture_region_editor_plugin.h

@@ -52,23 +52,23 @@ class TextureRegionEditor : public VBoxContainer {
 	};
 
 	friend class TextureRegionEditorPlugin;
-	OptionButton *snap_mode_button;
-	Button *zoom_in;
-	Button *zoom_reset;
-	Button *zoom_out;
-	HBoxContainer *hb_grid; //For showing/hiding the grid controls when changing the SnapMode
-	SpinBox *sb_step_y;
-	SpinBox *sb_step_x;
-	SpinBox *sb_off_y;
-	SpinBox *sb_off_x;
-	SpinBox *sb_sep_y;
-	SpinBox *sb_sep_x;
-	Panel *edit_draw;
+	OptionButton *snap_mode_button = nullptr;
+	Button *zoom_in = nullptr;
+	Button *zoom_reset = nullptr;
+	Button *zoom_out = nullptr;
+	HBoxContainer *hb_grid = nullptr; //For showing/hiding the grid controls when changing the SnapMode
+	SpinBox *sb_step_y = nullptr;
+	SpinBox *sb_step_x = nullptr;
+	SpinBox *sb_off_y = nullptr;
+	SpinBox *sb_off_x = nullptr;
+	SpinBox *sb_sep_y = nullptr;
+	SpinBox *sb_sep_x = nullptr;
+	Panel *edit_draw = nullptr;
 
-	VScrollBar *vscroll;
-	HScrollBar *hscroll;
+	VScrollBar *vscroll = nullptr;
+	HScrollBar *hscroll = nullptr;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	Vector2 draw_ofs;
 	float draw_zoom;
@@ -79,9 +79,9 @@ class TextureRegionEditor : public VBoxContainer {
 	Vector2 snap_step;
 	Vector2 snap_separation;
 
-	Sprite2D *node_sprite_2d;
-	Sprite3D *node_sprite_3d;
-	NinePatchRect *node_ninepatch;
+	Sprite2D *node_sprite_2d = nullptr;
+	Sprite3D *node_sprite_3d = nullptr;
+	NinePatchRect *node_ninepatch = nullptr;
 	Ref<StyleBoxTexture> obj_styleBox;
 	Ref<AtlasTexture> atlas_tex;
 
@@ -146,8 +146,8 @@ class TextureRegionEditorPlugin : public EditorPlugin {
 	GDCLASS(TextureRegionEditorPlugin, EditorPlugin);
 
 	bool manually_hidden;
-	Button *texture_region_button;
-	TextureRegionEditor *region_editor;
+	Button *texture_region_button = nullptr;
+	TextureRegionEditor *region_editor = nullptr;
 
 protected:
 	static void _bind_methods();

editor/plugins/theme_editor_plugin.h

@@ -75,9 +75,9 @@ class ThemeItemImportTree : public VBoxContainer {
 
 	Map<ThemeItem, ItemCheckedState> selected_items;
 
-	LineEdit *import_items_filter;
+	LineEdit *import_items_filter = nullptr;
 
-	Tree *import_items_tree;
+	Tree *import_items_tree = nullptr;
 	List<TreeItem *> tree_color_items;
 	List<TreeItem *> tree_constant_items;
 	List<TreeItem *> tree_font_items;
@@ -92,57 +92,57 @@ class ThemeItemImportTree : public VBoxContainer {
 		IMPORT_ITEM_DATA = 2,
 	};
 
-	TextureRect *select_colors_icon;
-	Label *select_colors_label;
-	Button *select_all_colors_button;
-	Button *select_full_colors_button;
-	Button *deselect_all_colors_button;
-	Label *total_selected_colors_label;
+	TextureRect *select_colors_icon = nullptr;
+	Label *select_colors_label = nullptr;
+	Button *select_all_colors_button = nullptr;
+	Button *select_full_colors_button = nullptr;
+	Button *deselect_all_colors_button = nullptr;
+	Label *total_selected_colors_label = nullptr;
 
-	TextureRect *select_constants_icon;
-	Label *select_constants_label;
-	Button *select_all_constants_button;
-	Button *select_full_constants_button;
-	Button *deselect_all_constants_button;
-	Label *total_selected_constants_label;
+	TextureRect *select_constants_icon = nullptr;
+	Label *select_constants_label = nullptr;
+	Button *select_all_constants_button = nullptr;
+	Button *select_full_constants_button = nullptr;
+	Button *deselect_all_constants_button = nullptr;
+	Label *total_selected_constants_label = nullptr;
 
-	TextureRect *select_fonts_icon;
-	Label *select_fonts_label;
-	Button *select_all_fonts_button;
-	Button *select_full_fonts_button;
-	Button *deselect_all_fonts_button;
-	Label *total_selected_fonts_label;
+	TextureRect *select_fonts_icon = nullptr;
+	Label *select_fonts_label = nullptr;
+	Button *select_all_fonts_button = nullptr;
+	Button *select_full_fonts_button = nullptr;
+	Button *deselect_all_fonts_button = nullptr;
+	Label *total_selected_fonts_label = nullptr;
 
-	TextureRect *select_font_sizes_icon;
-	Label *select_font_sizes_label;
-	Button *select_all_font_sizes_button;
-	Button *select_full_font_sizes_button;
-	Button *deselect_all_font_sizes_button;
-	Label *total_selected_font_sizes_label;
+	TextureRect *select_font_sizes_icon = nullptr;
+	Label *select_font_sizes_label = nullptr;
+	Button *select_all_font_sizes_button = nullptr;
+	Button *select_full_font_sizes_button = nullptr;
+	Button *deselect_all_font_sizes_button = nullptr;
+	Label *total_selected_font_sizes_label = nullptr;
 
-	TextureRect *select_icons_icon;
-	Label *select_icons_label;
-	Button *select_all_icons_button;
-	Button *select_full_icons_button;
-	Button *deselect_all_icons_button;
-	Label *total_selected_icons_label;
+	TextureRect *select_icons_icon = nullptr;
+	Label *select_icons_label = nullptr;
+	Button *select_all_icons_button = nullptr;
+	Button *select_full_icons_button = nullptr;
+	Button *deselect_all_icons_button = nullptr;
+	Label *total_selected_icons_label = nullptr;
 
-	TextureRect *select_styleboxes_icon;
-	Label *select_styleboxes_label;
-	Button *select_all_styleboxes_button;
-	Button *select_full_styleboxes_button;
-	Button *deselect_all_styleboxes_button;
-	Label *total_selected_styleboxes_label;
+	TextureRect *select_styleboxes_icon = nullptr;
+	Label *select_styleboxes_label = nullptr;
+	Button *select_all_styleboxes_button = nullptr;
+	Button *select_full_styleboxes_button = nullptr;
+	Button *deselect_all_styleboxes_button = nullptr;
+	Label *total_selected_styleboxes_label = nullptr;
 
-	HBoxContainer *select_icons_warning_hb;
-	TextureRect *select_icons_warning_icon;
-	Label *select_icons_warning;
+	HBoxContainer *select_icons_warning_hb = nullptr;
+	TextureRect *select_icons_warning_icon = nullptr;
+	Label *select_icons_warning = nullptr;
 
-	Button *import_collapse_types_button;
-	Button *import_expand_types_button;
-	Button *import_select_all_button;
-	Button *import_select_full_button;
-	Button *import_deselect_all_button;
+	Button *import_collapse_types_button = nullptr;
+	Button *import_expand_types_button = nullptr;
+	Button *import_select_all_button = nullptr;
+	Button *import_select_full_button = nullptr;
+	Button *import_deselect_all_button = nullptr;
 
 	void _update_items_tree();
 	void _toggle_type_items(bool p_collapse);
@@ -186,31 +186,31 @@ class ThemeTypeEditor;
 class ThemeItemEditorDialog : public AcceptDialog {
 	GDCLASS(ThemeItemEditorDialog, AcceptDialog);
 
-	ThemeTypeEditor *theme_type_editor;
+	ThemeTypeEditor *theme_type_editor = nullptr;
 
 	Ref<Theme> edited_theme;
 
-	TabContainer *tc;
+	TabContainer *tc = nullptr;
 
 	enum TypesTreeAction {
 		TYPES_TREE_REMOVE_ITEM,
 	};
 
-	Tree *edit_type_list;
-	LineEdit *edit_add_type_value;
+	Tree *edit_type_list = nullptr;
+	LineEdit *edit_add_type_value = nullptr;
 	String edited_item_type;
 
-	Button *edit_items_add_color;
-	Button *edit_items_add_constant;
-	Button *edit_items_add_font;
-	Button *edit_items_add_font_size;
-	Button *edit_items_add_icon;
-	Button *edit_items_add_stylebox;
-	Button *edit_items_remove_class;
-	Button *edit_items_remove_custom;
-	Button *edit_items_remove_all;
-	Tree *edit_items_tree;
-	Label *edit_items_message;
+	Button *edit_items_add_color = nullptr;
+	Button *edit_items_add_constant = nullptr;
+	Button *edit_items_add_font = nullptr;
+	Button *edit_items_add_font_size = nullptr;
+	Button *edit_items_add_icon = nullptr;
+	Button *edit_items_add_stylebox = nullptr;
+	Button *edit_items_remove_class = nullptr;
+	Button *edit_items_remove_custom = nullptr;
+	Button *edit_items_remove_all = nullptr;
+	Tree *edit_items_tree = nullptr;
+	Label *edit_items_message = nullptr;
 
 	enum ItemsTreeAction {
 		ITEMS_TREE_RENAME_ITEM,
@@ -218,10 +218,10 @@ class ThemeItemEditorDialog : public AcceptDialog {
 		ITEMS_TREE_REMOVE_DATA_TYPE,
 	};
 
-	ConfirmationDialog *edit_theme_item_dialog;
-	VBoxContainer *edit_theme_item_old_vb;
-	Label *theme_item_old_name;
-	LineEdit *theme_item_name;
+	ConfirmationDialog *edit_theme_item_dialog = nullptr;
+	VBoxContainer *edit_theme_item_old_vb = nullptr;
+	Label *theme_item_old_name = nullptr;
+	LineEdit *theme_item_name = nullptr;
 
 	enum ItemPopupMode {
 		CREATE_THEME_ITEM,
@@ -233,15 +233,15 @@ class ThemeItemEditorDialog : public AcceptDialog {
 	String edit_item_old_name;
 	Theme::DataType edit_item_data_type = Theme::DATA_TYPE_MAX;
 
-	ThemeItemImportTree *import_default_theme_items;
-	ThemeItemImportTree *import_editor_theme_items;
-	ThemeItemImportTree *import_other_theme_items;
+	ThemeItemImportTree *import_default_theme_items = nullptr;
+	ThemeItemImportTree *import_editor_theme_items = nullptr;
+	ThemeItemImportTree *import_other_theme_items = nullptr;
 
-	LineEdit *import_another_theme_value;
-	Button *import_another_theme_button;
-	EditorFileDialog *import_another_theme_dialog;
+	LineEdit *import_another_theme_value = nullptr;
+	Button *import_another_theme_button = nullptr;
+	EditorFileDialog *import_another_theme_dialog = nullptr;
 
-	ConfirmationDialog *confirm_closing_dialog;
+	ConfirmationDialog *confirm_closing_dialog = nullptr;
 
 	void ok_pressed() override;
 	void _close_dialog();
@@ -288,9 +288,9 @@ class ThemeTypeDialog : public ConfirmationDialog {
 
 	String pre_submitted_value;
 
-	LineEdit *add_type_filter;
-	ItemList *add_type_options;
-	ConfirmationDialog *add_type_confirmation;
+	LineEdit *add_type_filter = nullptr;
+	ItemList *add_type_options = nullptr;
+	ConfirmationDialog *add_type_confirmation = nullptr;
 
 	void _dialog_about_to_show();
 	void ok_pressed() override;
@@ -332,22 +332,22 @@ class ThemeTypeEditor : public MarginContainer {
 
 	LeadingStylebox leading_stylebox;
 
-	OptionButton *theme_type_list;
-	Button *add_type_button;
+	OptionButton *theme_type_list = nullptr;
+	Button *add_type_button = nullptr;
 
-	CheckButton *show_default_items_button;
+	CheckButton *show_default_items_button = nullptr;
 
-	TabContainer *data_type_tabs;
-	VBoxContainer *color_items_list;
-	VBoxContainer *constant_items_list;
-	VBoxContainer *font_items_list;
-	VBoxContainer *font_size_items_list;
-	VBoxContainer *icon_items_list;
-	VBoxContainer *stylebox_items_list;
+	TabContainer *data_type_tabs = nullptr;
+	VBoxContainer *color_items_list = nullptr;
+	VBoxContainer *constant_items_list = nullptr;
+	VBoxContainer *font_items_list = nullptr;
+	VBoxContainer *font_size_items_list = nullptr;
+	VBoxContainer *icon_items_list = nullptr;
+	VBoxContainer *stylebox_items_list = nullptr;
 
-	LineEdit *type_variation_edit;
-	Button *type_variation_button;
-	Label *type_variation_locked;
+	LineEdit *type_variation_edit = nullptr;
+	Button *type_variation_button = nullptr;
+	Label *type_variation_locked = nullptr;
 
 	enum TypeDialogMode {
 		ADD_THEME_TYPE,
@@ -355,10 +355,10 @@ class ThemeTypeEditor : public MarginContainer {
 	};
 
 	TypeDialogMode add_type_mode = ADD_THEME_TYPE;
-	ThemeTypeDialog *add_type_dialog;
+	ThemeTypeDialog *add_type_dialog = nullptr;
 
 	Vector<Control *> focusables;
-	Timer *update_debounce_timer;
+	Timer *update_debounce_timer = nullptr;
 
 	VBoxContainer *_create_item_list(Theme::DataType p_data_type);
 	void _update_type_list();
@@ -417,15 +417,15 @@ class ThemeEditor : public VBoxContainer {
 
 	Ref<Theme> theme;
 
-	TabBar *preview_tabs;
-	PanelContainer *preview_tabs_content;
-	Button *add_preview_button;
-	EditorFileDialog *preview_scene_dialog;
+	TabBar *preview_tabs = nullptr;
+	PanelContainer *preview_tabs_content = nullptr;
+	Button *add_preview_button = nullptr;
+	EditorFileDialog *preview_scene_dialog = nullptr;
 
-	ThemeTypeEditor *theme_type_editor;
+	ThemeTypeEditor *theme_type_editor = nullptr;
 
-	Label *theme_name;
-	ThemeItemEditorDialog *theme_edit_dialog;
+	Label *theme_name = nullptr;
+	ThemeItemEditorDialog *theme_edit_dialog = nullptr;
 
 	void _theme_save_button_cbk(bool p_save_as);
 	void _theme_edit_button_cbk();
@@ -452,8 +452,8 @@ public:
 class ThemeEditorPlugin : public EditorPlugin {
 	GDCLASS(ThemeEditorPlugin, EditorPlugin);
 
-	ThemeEditor *theme_editor;
-	Button *button;
+	ThemeEditor *theme_editor = nullptr;
+	Button *button = nullptr;
 
 public:
 	virtual String get_name() const override { return "Theme"; }

editor/plugins/theme_editor_preview.h

@@ -41,10 +41,10 @@
 class ThemeEditorPreview : public VBoxContainer {
 	GDCLASS(ThemeEditorPreview, VBoxContainer);
 
-	ScrollContainer *preview_container;
-	ColorRect *preview_bg;
-	MarginContainer *preview_overlay;
-	Control *picker_overlay;
+	ScrollContainer *preview_container = nullptr;
+	ColorRect *preview_bg = nullptr;
+	MarginContainer *preview_overlay = nullptr;
+	Control *picker_overlay = nullptr;
 	Control *hovered_control = nullptr;
 
 	struct ThemeCache {
@@ -69,9 +69,9 @@ class ThemeEditorPreview : public VBoxContainer {
 	void _reset_picker_overlay();
 
 protected:
-	HBoxContainer *preview_toolbar;
-	MarginContainer *preview_content;
-	Button *picker_button;
+	HBoxContainer *preview_toolbar = nullptr;
+	MarginContainer *preview_content = nullptr;
+	Button *picker_button = nullptr;
 
 	void add_preview_overlay(Control *p_overlay);
 
@@ -96,7 +96,7 @@ class SceneThemeEditorPreview : public ThemeEditorPreview {
 
 	Ref<PackedScene> loaded_scene;
 
-	Button *reload_scene_button;
+	Button *reload_scene_button = nullptr;
 
 	void _reload_scene();
 

editor/plugins/tiles/atlas_merging_dialog.h

@@ -49,19 +49,19 @@ private:
 	LocalVector<Map<Vector2i, Vector2i>> merged_mapping;
 	Ref<TileSet> tile_set;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	// Settings.
 	int next_line_after_column = 30;
 
 	// GUI.
-	ItemList *atlas_merging_atlases_list;
-	EditorPropertyVector2i *texture_region_size_editor_property;
-	EditorPropertyInteger *columns_editor_property;
-	TextureRect *preview;
-	Label *select_2_atlases_label;
-	EditorFileDialog *editor_file_dialog;
-	Button *merge_button;
+	ItemList *atlas_merging_atlases_list = nullptr;
+	EditorPropertyVector2i *texture_region_size_editor_property = nullptr;
+	EditorPropertyInteger *columns_editor_property = nullptr;
+	TextureRect *preview = nullptr;
+	Label *select_2_atlases_label = nullptr;
+	EditorFileDialog *editor_file_dialog = nullptr;
+	Button *merge_button = nullptr;
 
 	void _property_changed(const StringName &p_property, const Variant &p_value, const String &p_field, bool p_changing);
 

editor/plugins/tiles/tile_atlas_view.h

@@ -45,8 +45,8 @@ class TileAtlasView : public Control {
 	GDCLASS(TileAtlasView, Control);
 
 private:
-	TileSet *tile_set;
-	TileSetAtlasSource *tile_set_atlas_source;
+	TileSet *tile_set = nullptr;
+	TileSetAtlasSource *tile_set_atlas_source = nullptr;
 	int source_id = TileSet::INVALID_SOURCE;
 
 	enum DragType {
@@ -55,9 +55,9 @@ private:
 	};
 	DragType drag_type = DRAG_TYPE_NONE;
 	float previous_zoom = 1.0;
-	EditorZoomWidget *zoom_widget;
-	Button *button_center_view;
-	CenterContainer *center_container;
+	EditorZoomWidget *zoom_widget = nullptr;
+	Button *button_center_view = nullptr;
+	CenterContainer *center_container = nullptr;
 	Vector2 panning;
 	void _update_zoom_and_panning(bool p_zoom_on_mouse_pos = false);
 	void _zoom_widget_changed();
@@ -72,41 +72,41 @@ private:
 	Map<Vector2, Map<int, Rect2i>> alternative_tiles_rect_cache;
 	void _update_alternative_tiles_rect_cache();
 
-	MarginContainer *margin_container;
+	MarginContainer *margin_container = nullptr;
 	int margin_container_paddings[4] = { 0, 0, 0, 0 };
-	HBoxContainer *hbox;
-	Label *missing_source_label;
+	HBoxContainer *hbox = nullptr;
+	Label *missing_source_label = nullptr;
 
 	// Background
-	Control *background_left;
+	Control *background_left = nullptr;
 	void _draw_background_left();
-	Control *background_right;
+	Control *background_right = nullptr;
 	void _draw_background_right();
 
 	// Left side.
-	Control *base_tiles_root_control;
+	Control *base_tiles_root_control = nullptr;
 	void _base_tiles_root_control_gui_input(const Ref<InputEvent> &p_event);
 
-	Control *base_tiles_drawing_root;
+	Control *base_tiles_drawing_root = nullptr;
 
-	Control *base_tiles_draw;
+	Control *base_tiles_draw = nullptr;
 	void _draw_base_tiles();
 
-	Control *base_tiles_texture_grid;
+	Control *base_tiles_texture_grid = nullptr;
 	void _draw_base_tiles_texture_grid();
 
-	Control *base_tiles_shape_grid;
+	Control *base_tiles_shape_grid = nullptr;
 	void _draw_base_tiles_shape_grid();
 
 	Size2i _compute_base_tiles_control_size();
 
 	// Right side.
-	Control *alternative_tiles_root_control;
+	Control *alternative_tiles_root_control = nullptr;
 	void _alternative_tiles_root_control_gui_input(const Ref<InputEvent> &p_event);
 
-	Control *alternative_tiles_drawing_root;
+	Control *alternative_tiles_drawing_root = nullptr;
 
-	Control *alternatives_draw;
+	Control *alternatives_draw = nullptr;
 	void _draw_alternatives();
 
 	Size2i _compute_alternative_tiles_control_size();

editor/plugins/tiles/tile_data_editors.h

@@ -93,7 +93,7 @@ private:
 	bool multiple_polygon_mode = false;
 
 	bool use_undo_redo = true;
-	UndoRedo *editor_undo_redo;
+	UndoRedo *editor_undo_redo = nullptr;
 
 	// UI
 	int hovered_polygon_index = -1;
@@ -113,20 +113,20 @@ private:
 	Vector2 drag_last_pos;
 	PackedVector2Array drag_old_polygon;
 
-	HBoxContainer *toolbar;
+	HBoxContainer *toolbar = nullptr;
 	Ref<ButtonGroup> tools_button_group;
-	Button *button_create;
-	Button *button_edit;
-	Button *button_delete;
-	Button *button_pixel_snap;
-	MenuButton *button_advanced_menu;
+	Button *button_create = nullptr;
+	Button *button_edit = nullptr;
+	Button *button_delete = nullptr;
+	Button *button_pixel_snap = nullptr;
+	MenuButton *button_advanced_menu = nullptr;
 
 	Vector<Point2> in_creation_polygon;
 
-	Panel *panel;
-	Control *base_control;
-	EditorZoomWidget *editor_zoom_widget;
-	Button *button_center_view;
+	Panel *panel = nullptr;
+	Control *base_control = nullptr;
+	EditorZoomWidget *editor_zoom_widget = nullptr;
+	Button *button_center_view = nullptr;
 	Vector2 panning;
 
 	Ref<Texture2D> background_texture;
@@ -188,12 +188,12 @@ class TileDataDefaultEditor : public TileDataEditor {
 private:
 	// Toolbar
 	HBoxContainer *toolbar = memnew(HBoxContainer);
-	Button *picker_button;
+	Button *picker_button = nullptr;
 
 	// UI
 	Ref<Texture2D> tile_bool_checked;
 	Ref<Texture2D> tile_bool_unchecked;
-	Label *label;
+	Label *label = nullptr;
 
 	EditorProperty *property_editor = nullptr;
 
@@ -214,7 +214,7 @@ private:
 protected:
 	DummyObject *dummy_object = memnew(DummyObject);
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	StringName type;
 	String property;
@@ -268,7 +268,7 @@ private:
 	int occlusion_layer = -1;
 
 	// UI
-	GenericTilePolygonEditor *polygon_editor;
+	GenericTilePolygonEditor *polygon_editor = nullptr;
 
 	void _polygon_changed(PackedVector2Array p_polygon);
 
@@ -279,7 +279,7 @@ private:
 	virtual void _setup_undo_redo_action(TileSetAtlasSource *p_tile_set_atlas_source, Map<TileMapCell, Variant> p_previous_values, Variant p_new_value) override;
 
 protected:
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	virtual void _tile_set_changed() override;
 
@@ -299,7 +299,7 @@ class TileDataCollisionEditor : public TileDataDefaultEditor {
 	int physics_layer = -1;
 
 	// UI
-	GenericTilePolygonEditor *polygon_editor;
+	GenericTilePolygonEditor *polygon_editor = nullptr;
 	DummyObject *dummy_object = memnew(DummyObject);
 	Map<StringName, EditorProperty *> property_editors;
 
@@ -314,7 +314,7 @@ class TileDataCollisionEditor : public TileDataDefaultEditor {
 	virtual void _setup_undo_redo_action(TileSetAtlasSource *p_tile_set_atlas_source, Map<TileMapCell, Variant> p_previous_values, Variant p_new_value) override;
 
 protected:
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	virtual void _tile_set_changed() override;
 
@@ -335,7 +335,7 @@ class TileDataTerrainsEditor : public TileDataEditor {
 private:
 	// Toolbar
 	HBoxContainer *toolbar = memnew(HBoxContainer);
-	Button *picker_button;
+	Button *picker_button = nullptr;
 
 	// Painting state.
 	enum DragType {
@@ -352,7 +352,7 @@ private:
 	Variant drag_painted_value;
 
 	// UI
-	Label *label;
+	Label *label = nullptr;
 	DummyObject *dummy_object = memnew(DummyObject);
 	EditorPropertyEnum *terrain_set_property_editor = nullptr;
 	EditorPropertyEnum *terrain_property_editor = nullptr;
@@ -366,7 +366,7 @@ protected:
 
 	void _notification(int p_what);
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 public:
 	virtual Control *get_toolbar() override { return toolbar; };
@@ -388,7 +388,7 @@ private:
 	PackedVector2Array navigation_polygon;
 
 	// UI
-	GenericTilePolygonEditor *polygon_editor;
+	GenericTilePolygonEditor *polygon_editor = nullptr;
 
 	void _polygon_changed(PackedVector2Array p_polygon);
 
@@ -399,7 +399,7 @@ private:
 	virtual void _setup_undo_redo_action(TileSetAtlasSource *p_tile_set_atlas_source, Map<TileMapCell, Variant> p_previous_values, Variant p_new_value) override;
 
 protected:
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	virtual void _tile_set_changed() override;
 

editor/plugins/tiles/tile_map_editor.h

@@ -51,8 +51,8 @@ class UndoRedo;
 class TileMapEditorPlugin : public Object {
 public:
 	struct TabData {
-		Control *toolbar;
-		Control *panel;
+		Control *toolbar = nullptr;
+		Control *panel = nullptr;
 	};
 
 	virtual Vector<TabData> get_tabs() const {
@@ -69,33 +69,33 @@ class TileMapEditorTilesPlugin : public TileMapEditorPlugin {
 	GDCLASS(TileMapEditorTilesPlugin, TileMapEditorPlugin);
 
 private:
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	ObjectID tile_map_id;
 	int tile_map_layer = -1;
 	virtual void edit(ObjectID p_tile_map_id, int p_tile_map_layer) override;
 
 	///// Toolbar /////
-	HBoxContainer *toolbar;
+	HBoxContainer *toolbar = nullptr;
 
 	Ref<ButtonGroup> tool_buttons_group;
-	Button *select_tool_button;
-	Button *paint_tool_button;
-	Button *line_tool_button;
-	Button *rect_tool_button;
-	Button *bucket_tool_button;
+	Button *select_tool_button = nullptr;
+	Button *paint_tool_button = nullptr;
+	Button *line_tool_button = nullptr;
+	Button *rect_tool_button = nullptr;
+	Button *bucket_tool_button = nullptr;
 
-	HBoxContainer *tools_settings;
+	HBoxContainer *tools_settings = nullptr;
 
-	VSeparator *tools_settings_vsep;
-	Button *picker_button;
-	Button *erase_button;
+	VSeparator *tools_settings_vsep = nullptr;
+	Button *picker_button = nullptr;
+	Button *erase_button = nullptr;
 
-	VSeparator *tools_settings_vsep_2;
-	CheckBox *bucket_contiguous_checkbox;
-	CheckBox *random_tile_checkbox;
+	VSeparator *tools_settings_vsep_2 = nullptr;
+	CheckBox *bucket_contiguous_checkbox = nullptr;
+	CheckBox *random_tile_checkbox = nullptr;
 	float scattering = 0.0;
-	Label *scatter_label;
-	SpinBox *scatter_spinbox;
+	Label *scatter_label = nullptr;
+	SpinBox *scatter_spinbox = nullptr;
 	void _on_random_tile_checkbox_toggled(bool p_pressed);
 	void _on_scattering_spinbox_changed(double p_value);
 
@@ -148,12 +148,12 @@ private:
 	void _tab_changed();
 
 	///// Bottom panel tiles ////
-	VBoxContainer *tiles_bottom_panel;
-	Label *missing_source_label;
-	Label *invalid_source_label;
+	VBoxContainer *tiles_bottom_panel = nullptr;
+	Label *missing_source_label = nullptr;
+	Label *invalid_source_label = nullptr;
 
-	ItemList *sources_list;
-	MenuButton *source_sort_button;
+	ItemList *sources_list = nullptr;
+	MenuButton *source_sort_button = nullptr;
 
 	Ref<Texture2D> missing_atlas_texture_icon;
 	void _update_tile_set_sources_list();
@@ -162,18 +162,18 @@ private:
 
 	// Atlas sources.
 	TileMapCell hovered_tile;
-	TileAtlasView *tile_atlas_view;
-	HSplitContainer *atlas_sources_split_container;
+	TileAtlasView *tile_atlas_view = nullptr;
+	HSplitContainer *atlas_sources_split_container = nullptr;
 
 	bool tile_set_dragging_selection = false;
 	Vector2i tile_set_drag_start_mouse_pos;
 
-	Control *tile_atlas_control;
+	Control *tile_atlas_control = nullptr;
 	void _tile_atlas_control_mouse_exited();
 	void _tile_atlas_control_gui_input(const Ref<InputEvent> &p_event);
 	void _tile_atlas_control_draw();
 
-	Control *alternative_tiles_control;
+	Control *alternative_tiles_control = nullptr;
 	void _tile_alternatives_control_draw();
 	void _tile_alternatives_control_mouse_exited();
 	void _tile_alternatives_control_gui_input(const Ref<InputEvent> &p_event);
@@ -182,7 +182,7 @@ private:
 	void _set_source_sort(int p_sort);
 
 	// Scenes collection sources.
-	ItemList *scene_tiles_list;
+	ItemList *scene_tiles_list = nullptr;
 
 	void _update_scenes_collection_view();
 	void _scene_thumbnail_done(const String &p_path, const Ref<Texture2D> &p_preview, const Ref<Texture2D> &p_small_preview, Variant p_ud);
@@ -190,9 +190,9 @@ private:
 	void _scenes_list_nothing_selected();
 
 	///// Bottom panel patterns ////
-	VBoxContainer *patterns_bottom_panel;
-	ItemList *patterns_item_list;
-	Label *patterns_help_label;
+	VBoxContainer *patterns_bottom_panel = nullptr;
+	ItemList *patterns_item_list = nullptr;
+	Label *patterns_help_label = nullptr;
 	void _patterns_item_list_gui_input(const Ref<InputEvent> &p_event);
 	void _pattern_preview_done(Ref<TileMapPattern> p_pattern, Ref<Texture2D> p_texture);
 	bool select_last_pattern = false;
@@ -220,32 +220,32 @@ class TileMapEditorTerrainsPlugin : public TileMapEditorPlugin {
 	GDCLASS(TileMapEditorTerrainsPlugin, TileMapEditorPlugin);
 
 private:
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	ObjectID tile_map_id;
 	int tile_map_layer = -1;
 	virtual void edit(ObjectID p_tile_map_id, int p_tile_map_layer) override;
 
 	// Toolbar.
-	HBoxContainer *toolbar;
+	HBoxContainer *toolbar = nullptr;
 
 	Ref<ButtonGroup> tool_buttons_group;
-	Button *paint_tool_button;
-	Button *line_tool_button;
-	Button *rect_tool_button;
-	Button *bucket_tool_button;
+	Button *paint_tool_button = nullptr;
+	Button *line_tool_button = nullptr;
+	Button *rect_tool_button = nullptr;
+	Button *bucket_tool_button = nullptr;
 
-	HBoxContainer *tools_settings;
+	HBoxContainer *tools_settings = nullptr;
 
-	VSeparator *tools_settings_vsep;
-	Button *picker_button;
-	Button *erase_button;
+	VSeparator *tools_settings_vsep = nullptr;
+	Button *picker_button = nullptr;
+	Button *erase_button = nullptr;
 
-	VSeparator *tools_settings_vsep_2;
-	CheckBox *bucket_contiguous_checkbox;
+	VSeparator *tools_settings_vsep_2 = nullptr;
+	CheckBox *bucket_contiguous_checkbox = nullptr;
 	void _update_toolbar();
 
 	// Main vbox.
-	VBoxContainer *main_vbox_container;
+	VBoxContainer *main_vbox_container = nullptr;
 
 	// TileMap editing.
 	bool has_mouse = false;
@@ -278,8 +278,8 @@ private:
 	void _update_selection();
 
 	// Bottom panel.
-	Tree *terrains_tree;
-	ItemList *terrains_tile_list;
+	Tree *terrains_tree = nullptr;
+	ItemList *terrains_tile_list = nullptr;
 
 	// Cache.
 	LocalVector<LocalVector<Set<TileSet::TerrainsPattern>>> per_terrain_terrains_patterns;
@@ -306,7 +306,7 @@ class TileMapEditor : public VBoxContainer {
 	GDCLASS(TileMapEditor, VBoxContainer);
 
 private:
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	bool tileset_changed_needs_update = false;
 	ObjectID tile_map_id;
 	int tile_map_layer = -1;
@@ -315,24 +315,24 @@ private:
 	Vector<TileMapEditorPlugin *> tile_map_editor_plugins;
 
 	// Toolbar.
-	HBoxContainer *tile_map_toolbar;
+	HBoxContainer *tile_map_toolbar = nullptr;
 
-	PopupMenu *layers_selection_popup;
-	Button *layers_selection_button;
-	Button *toogle_highlight_selected_layer_button;
+	PopupMenu *layers_selection_popup = nullptr;
+	Button *layers_selection_button = nullptr;
+	Button *toogle_highlight_selected_layer_button = nullptr;
 	void _layers_selection_button_draw();
 	void _layers_selection_button_pressed();
 	void _layers_selection_id_pressed(int p_id);
 
-	Button *toggle_grid_button;
+	Button *toggle_grid_button = nullptr;
 	void _on_grid_toggled(bool p_pressed);
 
-	MenuButton *advanced_menu_button;
+	MenuButton *advanced_menu_button = nullptr;
 	void _advanced_menu_button_id_pressed(int p_id);
 
 	// Bottom panel.
-	Label *missing_tileset_label;
-	TabBar *tabs_bar;
+	Label *missing_tileset_label = nullptr;
+	TabBar *tabs_bar = nullptr;
 	LocalVector<TileMapEditorPlugin::TabData> tabs_data;
 	LocalVector<TileMapEditorPlugin *> tabs_plugins;
 	void _update_bottom_panel();

editor/plugins/tiles/tile_proxies_manager_dialog.h

@@ -43,24 +43,24 @@ private:
 	int commited_actions_count = 0;
 	Ref<TileSet> tile_set;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	TileMapCell from;
 	TileMapCell to;
 
 	// GUI
-	ItemList *source_level_list;
-	ItemList *coords_level_list;
-	ItemList *alternative_level_list;
+	ItemList *source_level_list = nullptr;
+	ItemList *coords_level_list = nullptr;
+	ItemList *alternative_level_list = nullptr;
 
-	EditorPropertyInteger *source_from_property_editor;
-	EditorPropertyVector2i *coords_from_property_editor;
-	EditorPropertyInteger *alternative_from_property_editor;
-	EditorPropertyInteger *source_to_property_editor;
-	EditorPropertyVector2i *coords_to_property_editor;
-	EditorPropertyInteger *alternative_to_property_editor;
+	EditorPropertyInteger *source_from_property_editor = nullptr;
+	EditorPropertyVector2i *coords_from_property_editor = nullptr;
+	EditorPropertyInteger *alternative_from_property_editor = nullptr;
+	EditorPropertyInteger *source_to_property_editor = nullptr;
+	EditorPropertyVector2i *coords_to_property_editor = nullptr;
+	EditorPropertyInteger *alternative_to_property_editor = nullptr;
 
-	PopupMenu *popup_menu;
+	PopupMenu *popup_menu = nullptr;
 	void _right_clicked(int p_item, Vector2 p_local_mouse_pos, Object *p_item_list);
 	void _menu_id_pressed(int p_id);
 	void _delete_selected_bindings();

editor/plugins/tiles/tile_set_atlas_source_editor.h

@@ -85,7 +85,7 @@ public:
 		GDCLASS(AtlasTileProxyObject, Object);
 
 	private:
-		TileSetAtlasSourceEditor *tiles_set_atlas_source_editor;
+		TileSetAtlasSourceEditor *tiles_set_atlas_source_editor = nullptr;
 
 		TileSetAtlasSource *tile_set_atlas_source = nullptr;
 		Set<TileSelection> tiles = Set<TileSelection>();
@@ -114,16 +114,16 @@ private:
 	TileSetAtlasSource *tile_set_atlas_source = nullptr;
 	int tile_set_atlas_source_id = TileSet::INVALID_SOURCE;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	bool tile_set_changed_needs_update = false;
 
 	// -- Properties painting --
-	VBoxContainer *tile_data_painting_editor_container;
-	Label *tile_data_editors_label;
-	Button *tile_data_editor_dropdown_button;
-	Popup *tile_data_editors_popup;
-	Tree *tile_data_editors_tree;
+	VBoxContainer *tile_data_painting_editor_container = nullptr;
+	Label *tile_data_editors_label = nullptr;
+	Button *tile_data_editor_dropdown_button = nullptr;
+	Popup *tile_data_editors_popup = nullptr;
+	Tree *tile_data_editors_tree = nullptr;
 	void _tile_data_editor_dropdown_button_draw();
 	void _tile_data_editor_dropdown_button_pressed();
 
@@ -135,21 +135,21 @@ private:
 	void _tile_data_editors_tree_selected();
 
 	// -- Inspector --
-	AtlasTileProxyObject *tile_proxy_object;
-	Label *tile_inspector_label;
-	EditorInspector *tile_inspector;
-	Label *tile_inspector_no_tile_selected_label;
+	AtlasTileProxyObject *tile_proxy_object = nullptr;
+	Label *tile_inspector_label = nullptr;
+	EditorInspector *tile_inspector = nullptr;
+	Label *tile_inspector_no_tile_selected_label = nullptr;
 	String selected_property;
 	void _inspector_property_selected(String p_property);
 
-	TileSetAtlasSourceProxyObject *atlas_source_proxy_object;
-	Label *atlas_source_inspector_label;
-	EditorInspector *atlas_source_inspector;
+	TileSetAtlasSourceProxyObject *atlas_source_proxy_object = nullptr;
+	Label *atlas_source_inspector_label = nullptr;
+	EditorInspector *atlas_source_inspector = nullptr;
 
 	// -- Atlas view --
-	HBoxContainer *toolbox;
-	Label *tile_atlas_view_missing_source_label;
-	TileAtlasView *tile_atlas_view;
+	HBoxContainer *toolbox = nullptr;
+	Label *tile_atlas_view_missing_source_label = nullptr;
+	TileAtlasView *tile_atlas_view = nullptr;
 
 	// Dragging
 	enum DragType {
@@ -202,17 +202,17 @@ private:
 
 	// Tool buttons.
 	Ref<ButtonGroup> tools_button_group;
-	Button *tool_setup_atlas_source_button;
-	Button *tool_select_button;
-	Button *tool_paint_button;
-	Label *tool_tile_id_label;
+	Button *tool_setup_atlas_source_button = nullptr;
+	Button *tool_select_button = nullptr;
+	Button *tool_paint_button = nullptr;
+	Label *tool_tile_id_label = nullptr;
 
 	// Tool settings.
-	HBoxContainer *tool_settings;
-	VSeparator *tool_settings_vsep;
-	HBoxContainer *tool_settings_tile_data_toolbar_container;
-	Button *tools_settings_erase_button;
-	MenuButton *tool_advanced_menu_buttom;
+	HBoxContainer *tool_settings = nullptr;
+	VSeparator *tool_settings_vsep = nullptr;
+	HBoxContainer *tool_settings_tile_data_toolbar_container = nullptr;
+	Button *tools_settings_erase_button = nullptr;
+	MenuButton *tool_advanced_menu_buttom = nullptr;
 
 	// Selection.
 	Set<TileSelection> selection;
@@ -223,12 +223,12 @@ private:
 	// A control on the tile atlas to draw and handle input events.
 	Vector2i hovered_base_tile_coords = TileSetSource::INVALID_ATLAS_COORDS;
 
-	PopupMenu *base_tile_popup_menu;
-	PopupMenu *empty_base_tile_popup_menu;
+	PopupMenu *base_tile_popup_menu = nullptr;
+	PopupMenu *empty_base_tile_popup_menu = nullptr;
 	Ref<Texture2D> resize_handle;
 	Ref<Texture2D> resize_handle_disabled;
-	Control *tile_atlas_control;
-	Control *tile_atlas_control_unscaled;
+	Control *tile_atlas_control = nullptr;
+	Control *tile_atlas_control_unscaled = nullptr;
 	void _tile_atlas_control_draw();
 	void _tile_atlas_control_unscaled_draw();
 	void _tile_atlas_control_mouse_exited();
@@ -238,9 +238,9 @@ private:
 	// A control over the alternative tiles.
 	Vector3i hovered_alternative_tile_coords = Vector3i(TileSetSource::INVALID_ATLAS_COORDS.x, TileSetSource::INVALID_ATLAS_COORDS.y, TileSetSource::INVALID_TILE_ALTERNATIVE);
 
-	PopupMenu *alternative_tile_popup_menu;
-	Control *alternative_tiles_control;
-	Control *alternative_tiles_control_unscaled;
+	PopupMenu *alternative_tile_popup_menu = nullptr;
+	Control *alternative_tiles_control = nullptr;
+	Control *alternative_tiles_control_unscaled = nullptr;
 	void _tile_alternatives_control_draw();
 	void _tile_alternatives_control_unscaled_draw();
 	void _tile_alternatives_control_mouse_exited();
@@ -264,7 +264,7 @@ private:
 	// -- Misc --
 	void _auto_create_tiles();
 	void _auto_remove_tiles();
-	AcceptDialog *confirm_auto_create_tiles;
+	AcceptDialog *confirm_auto_create_tiles = nullptr;
 
 	void _tile_set_changed();
 	void _tile_proxy_object_changed(String p_what);
@@ -293,7 +293,7 @@ class EditorPropertyTilePolygon : public EditorProperty {
 
 	void _add_focusable_children(Node *p_node);
 
-	GenericTilePolygonEditor *generic_tile_polygon_editor;
+	GenericTilePolygonEditor *generic_tile_polygon_editor = nullptr;
 	void _polygons_changed();
 
 public:

editor/plugins/tiles/tile_set_editor.h

@@ -47,18 +47,18 @@ class TileSetEditor : public VBoxContainer {
 private:
 	Ref<TileSet> tile_set;
 	bool tile_set_changed_needs_update = false;
-	HSplitContainer *split_container;
+	HSplitContainer *split_container = nullptr;
 
 	// TabBar.
-	HBoxContainer *tile_set_toolbar;
-	TabBar *tabs_bar;
+	HBoxContainer *tile_set_toolbar = nullptr;
+	TabBar *tabs_bar = nullptr;
 
 	// Tiles.
-	Label *no_source_selected_label;
-	TileSetAtlasSourceEditor *tile_set_atlas_source_editor;
-	TileSetScenesCollectionSourceEditor *tile_set_scenes_collection_source_editor;
+	Label *no_source_selected_label = nullptr;
+	TileSetAtlasSourceEditor *tile_set_atlas_source_editor = nullptr;
+	TileSetScenesCollectionSourceEditor *tile_set_scenes_collection_source_editor = nullptr;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	void _drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from);
 	bool _can_drop_data_fw(const Point2 &p_point, const Variant &p_data, Control *p_from) const;
@@ -66,11 +66,11 @@ private:
 	void _update_sources_list(int force_selected_id = -1);
 
 	// Sources management.
-	Button *sources_delete_button;
-	MenuButton *sources_add_button;
-	MenuButton *source_sort_button;
-	MenuButton *sources_advanced_menu_button;
-	ItemList *sources_list;
+	Button *sources_delete_button = nullptr;
+	MenuButton *sources_add_button = nullptr;
+	MenuButton *source_sort_button = nullptr;
+	MenuButton *sources_advanced_menu_button = nullptr;
+	ItemList *sources_list = nullptr;
 	Ref<Texture2D> missing_texture_texture;
 	void _source_selected(int p_source_index);
 	void _source_delete_pressed();
@@ -78,12 +78,12 @@ private:
 	void _sources_advanced_menu_id_pressed(int p_id_pressed);
 	void _set_source_sort(int p_sort);
 
-	AtlasMergingDialog *atlas_merging_dialog;
-	TileProxiesManagerDialog *tile_proxies_manager_dialog;
+	AtlasMergingDialog *atlas_merging_dialog = nullptr;
+	TileProxiesManagerDialog *tile_proxies_manager_dialog = nullptr;
 
 	// Patterns.
-	ItemList *patterns_item_list;
-	Label *patterns_help_label;
+	ItemList *patterns_item_list = nullptr;
+	Label *patterns_help_label = nullptr;
 	void _patterns_item_list_gui_input(const Ref<InputEvent> &p_event);
 	void _pattern_preview_done(Ref<TileMapPattern> p_pattern, Ref<Texture2D> p_texture);
 	bool select_last_pattern = false;

editor/plugins/tiles/tile_set_scenes_collection_source_editor.h

@@ -70,7 +70,7 @@ private:
 		GDCLASS(SceneTileProxyObject, Object);
 
 	private:
-		TileSetScenesCollectionSourceEditor *tile_set_scenes_collection_source_editor;
+		TileSetScenesCollectionSourceEditor *tile_set_scenes_collection_source_editor = nullptr;
 
 		TileSetScenesCollectionSource *tile_set_scenes_collection_source = nullptr;
 		int source_id;
@@ -97,23 +97,23 @@ private:
 	TileSetScenesCollectionSource *tile_set_scenes_collection_source = nullptr;
 	int tile_set_source_id = -1;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	bool tile_set_scenes_collection_source_changed_needs_update = false;
 
 	// Source inspector.
-	TileSetScenesCollectionProxyObject *scenes_collection_source_proxy_object;
-	Label *scenes_collection_source_inspector_label;
-	EditorInspector *scenes_collection_source_inspector;
+	TileSetScenesCollectionProxyObject *scenes_collection_source_proxy_object = nullptr;
+	Label *scenes_collection_source_inspector_label = nullptr;
+	EditorInspector *scenes_collection_source_inspector = nullptr;
 
 	// Tile inspector.
-	SceneTileProxyObject *tile_proxy_object;
-	Label *tile_inspector_label;
-	EditorInspector *tile_inspector;
+	SceneTileProxyObject *tile_proxy_object = nullptr;
+	Label *tile_inspector_label = nullptr;
+	EditorInspector *tile_inspector = nullptr;
 
-	ItemList *scene_tiles_list;
-	Button *scene_tile_add_button;
-	Button *scene_tile_delete_button;
+	ItemList *scene_tiles_list = nullptr;
+	Button *scene_tile_add_button = nullptr;
+	Button *scene_tile_delete_button = nullptr;
 
 	void _tile_set_scenes_collection_source_changed();
 	void _scenes_collection_source_proxy_object_changed(String p_what);

editor/plugins/tiles/tiles_editor_plugin.h

@@ -57,11 +57,11 @@ private:
 	ObjectID tile_map_id;
 	Ref<TileSet> tile_set;
 
-	Button *tilemap_editor_button;
-	TileMapEditor *tilemap_editor;
+	Button *tilemap_editor_button = nullptr;
+	TileMapEditor *tilemap_editor = nullptr;
 
-	Button *tileset_editor_button;
-	TileSetEditor *tileset_editor;
+	Button *tileset_editor_button = nullptr;
+	TileSetEditor *tileset_editor = nullptr;
 
 	void _update_editors();
 

editor/plugins/version_control_editor_plugin.h

@@ -57,48 +57,48 @@ private:
 	int staged_files_count;
 	List<StringName> available_addons;
 
-	PopupMenu *version_control_actions;
-	ConfirmationDialog *metadata_dialog;
-	OptionButton *metadata_selection;
-	AcceptDialog *set_up_dialog;
-	VBoxContainer *set_up_vbc;
-	HBoxContainer *set_up_hbc;
-	Label *set_up_vcs_label;
-	OptionButton *set_up_choice;
-	PanelContainer *set_up_init_settings;
-	Button *set_up_init_button;
-	RichTextLabel *set_up_vcs_status;
-	Button *set_up_ok_button;
+	PopupMenu *version_control_actions = nullptr;
+	ConfirmationDialog *metadata_dialog = nullptr;
+	OptionButton *metadata_selection = nullptr;
+	AcceptDialog *set_up_dialog = nullptr;
+	VBoxContainer *set_up_vbc = nullptr;
+	HBoxContainer *set_up_hbc = nullptr;
+	Label *set_up_vcs_label = nullptr;
+	OptionButton *set_up_choice = nullptr;
+	PanelContainer *set_up_init_settings = nullptr;
+	Button *set_up_init_button = nullptr;
+	RichTextLabel *set_up_vcs_status = nullptr;
+	Button *set_up_ok_button = nullptr;
 
 	HashMap<ChangeType, String> change_type_to_strings;
 	HashMap<ChangeType, Color> change_type_to_color;
 
-	VBoxContainer *version_commit_dock;
-	VBoxContainer *commit_box_vbc;
-	HSplitContainer *stage_tools;
-	Tree *stage_files;
-	TreeItem *new_files;
-	TreeItem *modified_files;
-	TreeItem *renamed_files;
-	TreeItem *deleted_files;
-	TreeItem *typechange_files;
-	Label *staging_area_label;
-	HSplitContainer *stage_buttons;
-	Button *stage_all_button;
-	Button *stage_selected_button;
-	Button *refresh_button;
-	TextEdit *commit_message;
-	Button *commit_button;
-	Label *commit_status;
+	VBoxContainer *version_commit_dock = nullptr;
+	VBoxContainer *commit_box_vbc = nullptr;
+	HSplitContainer *stage_tools = nullptr;
+	Tree *stage_files = nullptr;
+	TreeItem *new_files = nullptr;
+	TreeItem *modified_files = nullptr;
+	TreeItem *renamed_files = nullptr;
+	TreeItem *deleted_files = nullptr;
+	TreeItem *typechange_files = nullptr;
+	Label *staging_area_label = nullptr;
+	HSplitContainer *stage_buttons = nullptr;
+	Button *stage_all_button = nullptr;
+	Button *stage_selected_button = nullptr;
+	Button *refresh_button = nullptr;
+	TextEdit *commit_message = nullptr;
+	Button *commit_button = nullptr;
+	Label *commit_status = nullptr;
 
-	PanelContainer *version_control_dock;
-	Button *version_control_dock_button;
-	VBoxContainer *diff_vbc;
-	HBoxContainer *diff_hbc;
-	Button *diff_refresh_button;
-	Label *diff_file_name;
-	Label *diff_heading;
-	RichTextLabel *diff;
+	PanelContainer *version_control_dock = nullptr;
+	Button *version_control_dock_button = nullptr;
+	VBoxContainer *diff_vbc = nullptr;
+	HBoxContainer *diff_hbc = nullptr;
+	Button *diff_refresh_button = nullptr;
+	Label *diff_file_name = nullptr;
+	Label *diff_heading = nullptr;
+	RichTextLabel *diff = nullptr;
 
 	void _populate_available_vcs_names();
 	void _create_vcs_metadata_files();

editor/plugins/voxel_gi_editor_plugin.h

@@ -41,12 +41,12 @@ struct EditorProgress;
 class VoxelGIEditorPlugin : public EditorPlugin {
 	GDCLASS(VoxelGIEditorPlugin, EditorPlugin);
 
-	VoxelGI *voxel_gi;
+	VoxelGI *voxel_gi = nullptr;
 
-	HBoxContainer *bake_hb;
-	Button *bake;
+	HBoxContainer *bake_hb = nullptr;
+	Button *bake = nullptr;
 
-	EditorFileDialog *probe_file;
+	EditorFileDialog *probe_file = nullptr;
 
 	static EditorProgress *tmp_progress;
 	static void bake_func_begin(int p_steps);