Initialize class/struct variables with default values in platform/ and editor/

editor/plugins/animation_player_editor_plugin.h

@@ -113,9 +113,9 @@ class AnimationPlayerEditor : public VBoxContainer {
 	int current_option;
 
 	struct BlendEditor {
-		AcceptDialog *dialog;
-		Tree *tree;
-		OptionButton *next;
+		AcceptDialog *dialog = nullptr;
+		Tree *tree = nullptr;
+		OptionButton *next = nullptr;
 
 	} blend_editor;
 
@@ -131,13 +131,13 @@ class AnimationPlayerEditor : public VBoxContainer {
 	// Onion skinning.
 	struct {
 		// Settings.
-		bool enabled;
-		bool past;
-		bool future;
-		int steps;
-		bool differences_only;
-		bool force_white_modulate;
-		bool include_gizmos;
+		bool enabled = false;
+		bool past = false;
+		bool future = false;
+		int steps = 0;
+		bool differences_only = false;
+		bool force_white_modulate = false;
+		bool include_gizmos = false;
 
 		int get_needed_capture_count() const {
 			// 'Differences only' needs a capture of the present.
@@ -145,8 +145,8 @@ class AnimationPlayerEditor : public VBoxContainer {
 		}
 
 		// Rendering.
-		int64_t last_frame;
-		int can_overlay;
+		int64_t last_frame = 0;
+		int can_overlay = 0;
 		Size2 capture_size;
 		Vector<RID> captures;
 		Vector<bool> captures_valid;

editor/plugins/animation_state_machine_editor.h

@@ -126,10 +126,10 @@ class AnimationNodeStateMachineEditor : public AnimationTreeNodeEditorPlugin {
 		Vector2 to;
 		AnimationNodeStateMachineTransition::SwitchMode mode;
 		StringName advance_condition_name;
-		bool advance_condition_state;
-		bool disabled;
-		bool auto_advance;
-		float width;
+		bool advance_condition_state = false;
+		bool disabled = false;
+		bool auto_advance = false;
+		float width = 0;
 	};
 
 	Vector<TransitionLine> transition_lines;

editor/plugins/asset_library_editor_plugin.h

@@ -89,10 +89,10 @@ class EditorAssetLibraryItemDescription : public ConfirmationDialog {
 	PanelContainer *previews_bg;
 
 	struct Preview {
-		int id;
-		bool is_video;
+		int id = 0;
+		bool is_video = false;
 		String video_link;
-		Button *button;
+		Button *button = nullptr;
 		Ref<Texture2D> image;
 	};
 
@@ -234,12 +234,12 @@ class EditorAssetLibrary : public PanelContainer {
 	};
 
 	struct ImageQueue {
-		bool active;
-		int queue_id;
-		ImageType image_type;
-		int image_index;
+		bool active = false;
+		int queue_id = 0;
+		ImageType image_type = ImageType::IMAGE_QUEUE_ICON;
+		int image_index = 0;
 		String image_url;
-		HTTPRequest *request;
+		HTTPRequest *request = nullptr;
 		ObjectID target;
 	};
 

editor/plugins/canvas_item_editor_plugin.h

@@ -288,9 +288,9 @@ private:
 	MenuOption last_option;
 
 	struct _SelectResult {
-		CanvasItem *item;
-		float z_index;
-		bool has_z;
+		CanvasItem *item = nullptr;
+		float z_index = 0;
+		bool has_z = true;
 		_FORCE_INLINE_ bool operator<(const _SelectResult &p_rr) const {
 			return has_z && p_rr.has_z ? p_rr.z_index < z_index : p_rr.has_z;
 		}
@@ -308,8 +308,6 @@ private:
 		Transform2D xform;
 		float length = 0.f;
 		uint64_t last_pass = 0;
-
-		BoneList() {}
 	};
 
 	uint64_t bone_last_frame;
@@ -331,7 +329,7 @@ private:
 	struct PoseClipboard {
 		Vector2 pos;
 		Vector2 scale;
-		float rot;
+		float rot = 0;
 		ObjectID id;
 	};
 	List<PoseClipboard> pose_clipboard;

editor/plugins/collision_shape_2d_editor_plugin.cpp

@@ -563,6 +563,8 @@ CollisionShape2DEditor::CollisionShape2DEditor(EditorNode *p_editor) {
 
 	edit_handle = -1;
 	pressed = false;
+
+	shape_type = 0;
 }
 
 void CollisionShape2DEditorPlugin::edit(Object *p_obj) {

editor/plugins/editor_preview_plugins.h

@@ -90,7 +90,7 @@ class EditorMaterialPreviewPlugin : public EditorResourcePreviewGenerator {
 	RID light2;
 	RID light_instance2;
 	RID camera;
-	mutable volatile bool preview_done;
+	mutable volatile bool preview_done = false;
 
 	void _preview_done(const Variant &p_udata);
 
@@ -134,7 +134,7 @@ class EditorMeshPreviewPlugin : public EditorResourcePreviewGenerator {
 	RID light2;
 	RID light_instance2;
 	RID camera;
-	mutable volatile bool preview_done;
+	mutable volatile bool preview_done = false;
 
 	void _preview_done(const Variant &p_udata);
 
@@ -156,7 +156,7 @@ class EditorFontPreviewPlugin : public EditorResourcePreviewGenerator {
 	RID viewport_texture;
 	RID canvas;
 	RID canvas_item;
-	mutable volatile bool preview_done;
+	mutable volatile bool preview_done = false;
 
 	void _preview_done(const Variant &p_udata);
 

editor/plugins/mesh_library_editor_plugin.cpp

@@ -301,4 +301,6 @@ MeshLibraryEditorPlugin::MeshLibraryEditorPlugin(EditorNode *p_node) {
 	mesh_library_editor->set_anchors_and_margins_preset(Control::PRESET_TOP_WIDE);
 	mesh_library_editor->set_end(Point2(0, 22));
 	mesh_library_editor->hide();
+
+	editor = nullptr;
 }

editor/plugins/node_3d_editor_plugin.h

@@ -61,16 +61,10 @@ public:
 		Ref<Material> material;
 		Ref<SkinReference> skin_reference;
 		RID skeleton;
-		bool billboard;
-		bool unscaled;
-		bool can_intersect;
-		bool extra_margin;
-		Instance() {
-			billboard = false;
-			unscaled = false;
-			can_intersect = false;
-			extra_margin = false;
-		}
+		bool billboard = false;
+		bool unscaled = false;
+		bool can_intersect = false;
+		bool extra_margin = false;
 
 		void create_instance(Node3D *p_base, bool p_hidden = false);
 	};
@@ -80,7 +74,7 @@ public:
 
 	struct Handle {
 		Vector3 pos;
-		bool billboard;
+		bool billboard = false;
 	};
 
 	Vector<Vector3> handles;
@@ -296,9 +290,9 @@ private:
 	Label *fps_label;
 
 	struct _RayResult {
-		Node3D *item;
-		float depth;
-		int handle;
+		Node3D *item = nullptr;
+		float depth = 0;
+		int handle = 0;
 		_FORCE_INLINE_ bool operator<(const _RayResult &p_rr) const { return depth < p_rr.depth; }
 	};
 
@@ -375,11 +369,11 @@ private:
 		Vector3 click_ray_pos;
 		Vector3 center;
 		Vector3 orig_gizmo_pos;
-		int edited_gizmo;
+		int edited_gizmo = 0;
 		Point2 mouse_pos;
-		bool snap;
+		bool snap = false;
 		Ref<EditorNode3DGizmo> gizmo;
-		int gizmo_handle;
+		int gizmo_handle = 0;
 		Variant gizmo_initial_value;
 		Vector3 gizmo_initial_pos;
 	} _edit;
@@ -625,8 +619,8 @@ private:
 	AABB preview_bounds;
 
 	struct Gizmo {
-		bool visible;
-		float scale;
+		bool visible = false;
+		float scale = 0;
 		Transform transform;
 	} gizmo;
 

editor/plugins/path_3d_editor_plugin.cpp

@@ -290,6 +290,8 @@ void Path3DGizmo::redraw() {
 Path3DGizmo::Path3DGizmo(Path3D *p_path) {
 	path = p_path;
 	set_spatial_node(p_path);
+	orig_in_length = 0;
+	orig_out_length = 0;
 }
 
 bool Path3DEditorPlugin::forward_spatial_gui_input(Camera3D *p_camera, const Ref<InputEvent> &p_event) {

editor/plugins/script_editor_plugin.cpp

@@ -234,15 +234,15 @@ static bool _is_built_in_script(Script *p_script) {
 
 class EditorScriptCodeCompletionCache : public ScriptCodeCompletionCache {
 	struct Cache {
-		uint64_t time_loaded;
+		uint64_t time_loaded = 0;
 		RES cache;
 	};
 
 	Map<String, Cache> cached;
 
 public:
-	uint64_t max_time_cache;
-	int max_cache_size;
+	uint64_t max_time_cache = 5 * 60 * 1000; //minutes, five
+	int max_cache_size = 128;
 
 	void cleanup() {
 		List<Map<String, Cache>::Element *> to_clean;
@@ -292,11 +292,6 @@ public:
 		return E->get().cache;
 	}
 
-	EditorScriptCodeCompletionCache() {
-		max_cache_size = 128;
-		max_time_cache = 5 * 60 * 1000; //minutes, five
-	}
-
 	virtual ~EditorScriptCodeCompletionCache() {}
 };
 
@@ -1723,11 +1718,11 @@ struct _ScriptEditorItemData {
 	String name;
 	String sort_key;
 	Ref<Texture2D> icon;
-	int index;
+	int index = 0;
 	String tooltip;
-	bool used;
-	int category;
-	Node *ref;
+	bool used = false;
+	int category = 0;
+	Node *ref = nullptr;
 
 	bool operator<(const _ScriptEditorItemData &id) const {
 		if (category == id.category) {

editor/plugins/script_editor_plugin.h

@@ -291,7 +291,7 @@ class ScriptEditor : public PanelContainer {
 	Vector<Ref<EditorSyntaxHighlighter>> syntax_highlighters;
 
 	struct ScriptHistory {
-		Control *control;
+		Control *control = nullptr;
 		Variant state;
 	};
 

editor/plugins/shader_editor_plugin.cpp

@@ -714,6 +714,8 @@ ShaderEditorPlugin::ShaderEditorPlugin(EditorNode *p_node) {
 	shader_editor->set_custom_minimum_size(Size2(0, 300) * EDSCALE);
 	button = editor->add_bottom_panel_item(TTR("Shader"), shader_editor);
 	button->hide();
+
+	_2d = false;
 }
 
 ShaderEditorPlugin::~ShaderEditorPlugin() {

editor/plugins/skeleton_3d_editor_plugin.cpp

@@ -264,12 +264,7 @@ void BoneTransformEditor::_update_transform_properties(Transform tform) {
 }
 
 BoneTransformEditor::BoneTransformEditor(Skeleton3D *p_skeleton) :
-		skeleton(p_skeleton),
-		key_button(nullptr),
-		enabled_checkbox(nullptr),
-		keyable(false),
-		toggle_enabled(false),
-		updating(false) {
+		skeleton(p_skeleton) {
 	undo_redo = EditorNode::get_undo_redo();
 }
 

editor/plugins/skeleton_3d_editor_plugin.h

@@ -47,13 +47,13 @@ class EditorPropertyVector3;
 class BoneTransformEditor : public VBoxContainer {
 	GDCLASS(BoneTransformEditor, VBoxContainer);
 
-	EditorInspectorSection *section;
+	EditorInspectorSection *section = nullptr;
 
-	EditorPropertyVector3 *translation_property;
-	EditorPropertyVector3 *rotation_property;
-	EditorPropertyVector3 *scale_property;
-	EditorInspectorSection *transform_section;
-	EditorPropertyTransform *transform_property;
+	EditorPropertyVector3 *translation_property = nullptr;
+	EditorPropertyVector3 *rotation_property = nullptr;
+	EditorPropertyVector3 *scale_property = nullptr;
+	EditorInspectorSection *transform_section = nullptr;
+	EditorPropertyTransform *transform_property = nullptr;
 
 	Rect2 background_rects[5];
 
@@ -62,12 +62,12 @@ class BoneTransformEditor : public VBoxContainer {
 
 	UndoRedo *undo_redo;
 
-	Button *key_button;
-	CheckBox *enabled_checkbox;
+	Button *key_button = nullptr;
+	CheckBox *enabled_checkbox = nullptr;
 
-	bool keyable;
-	bool toggle_enabled;
-	bool updating;
+	bool keyable = false;
+	bool toggle_enabled = false;
+	bool updating = false;
 
 	String label;
 
@@ -128,7 +128,6 @@ class Skeleton3DEditor : public VBoxContainer {
 	struct BoneInfo {
 		PhysicalBone3D *physical_bone = nullptr;
 		Transform relative_rest; // Relative to skeleton node
-		BoneInfo() {}
 	};
 
 	EditorNode *editor;
@@ -136,20 +135,20 @@ class Skeleton3DEditor : public VBoxContainer {
 
 	Skeleton3D *skeleton;
 
-	Tree *joint_tree;
-	BoneTransformEditor *rest_editor;
-	BoneTransformEditor *pose_editor;
-	BoneTransformEditor *custom_pose_editor;
+	Tree *joint_tree = nullptr;
+	BoneTransformEditor *rest_editor = nullptr;
+	BoneTransformEditor *pose_editor = nullptr;
+	BoneTransformEditor *custom_pose_editor = nullptr;
 
-	MenuButton *options;
-	EditorFileDialog *file_dialog;
+	MenuButton *options = nullptr;
+	EditorFileDialog *file_dialog = nullptr;
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 
 	void _on_click_option(int p_option);
 	void _file_selected(const String &p_file);
 
-	EditorFileDialog *file_export_lib;
+	EditorFileDialog *file_export_lib = nullptr;
 
 	void update_joint_tree();
 	void update_editors();

editor/plugins/tile_map_editor_plugin.cpp

@@ -409,7 +409,7 @@ void TileMapEditor::_sbox_input(const Ref<InputEvent> &p_ie) {
 // In modern C++ this could have been inside its body.
 namespace {
 struct _PaletteEntry {
-	int id;
+	int id = 0;
 	String name;
 
 	bool operator<(const _PaletteEntry &p_rhs) const {

editor/plugins/tile_map_editor_plugin.h

@@ -131,8 +131,6 @@ class TileMapEditor : public VBoxContainer {
 		bool yf = false;
 		bool tr = false;
 		Vector2 ac;
-
-		CellOp() {}
 	};
 
 	Map<Point2i, CellOp> paint_undo;
@@ -144,8 +142,6 @@ class TileMapEditor : public VBoxContainer {
 		bool flip_v = false;
 		bool transpose = false;
 		Point2i autotile_coord;
-
-		TileData() {}
 	};
 
 	List<TileData> copydata;

editor/plugins/visual_shader_editor_plugin.cpp

@@ -49,7 +49,7 @@
 
 struct FloatConstantDef {
 	String name;
-	float value;
+	float value = 0;
 	String desc;
 };
 
@@ -4062,9 +4062,6 @@ void VisualShaderNodePortPreview::_notification(int p_what) {
 void VisualShaderNodePortPreview::_bind_methods() {
 }
 
-VisualShaderNodePortPreview::VisualShaderNodePortPreview() {
-}
-
 //////////////////////////////////
 
 String VisualShaderConversionPlugin::converts_to() const {

editor/plugins/visual_shader_editor_plugin.h

@@ -56,26 +56,26 @@ class VisualShaderGraphPlugin : public Reference {
 
 private:
 	struct InputPort {
-		Button *default_input_button;
+		Button *default_input_button = nullptr;
 	};
 
 	struct Port {
-		TextureButton *preview_button;
+		TextureButton *preview_button = nullptr;
 	};
 
 	struct Link {
-		VisualShader::Type type;
-		VisualShaderNode *visual_node;
-		GraphNode *graph_node;
-		bool preview_visible;
-		int preview_pos;
+		VisualShader::Type type = VisualShader::Type::TYPE_MAX;
+		VisualShaderNode *visual_node = nullptr;
+		GraphNode *graph_node = nullptr;
+		bool preview_visible = 0;
+		int preview_pos = 0;
 		Map<int, InputPort> input_ports;
 		Map<int, Port> output_ports;
-		VBoxContainer *preview_box;
-		LineEdit *uniform_name;
-		OptionButton *const_op;
-		CodeEdit *expression_edit;
-		CurveEditor *curve_editor;
+		VBoxContainer *preview_box = nullptr;
+		LineEdit *uniform_name = nullptr;
+		OptionButton *const_op = nullptr;
+		CodeEdit *expression_edit = nullptr;
+		CurveEditor *curve_editor = nullptr;
 	};
 
 	Ref<VisualShader> visual_shader;
@@ -206,16 +206,16 @@ class VisualShaderEditor : public VBoxContainer {
 		String category;
 		String type;
 		String description;
-		int sub_func;
+		int sub_func = 0;
 		String sub_func_str;
 		Ref<Script> script;
-		int mode;
-		int return_type;
-		int func;
-		float value;
-		bool highend;
-		bool is_custom;
-		int temp_idx;
+		int mode = 0;
+		int return_type = 0;
+		int func = 0;
+		float value = 0;
+		bool highend = false;
+		bool is_custom = false;
+		int temp_idx = 0;
 
 		AddOption(const String &p_name = String(), const String &p_category = String(), const String &p_sub_category = String(), const String &p_type = String(), const String &p_description = String(), int p_sub_func = -1, int p_return_type = -1, int p_mode = -1, int p_func = -1, float p_value = -1, bool p_highend = false) {
 			name = p_name;
@@ -283,8 +283,8 @@ class VisualShaderEditor : public VBoxContainer {
 	static VisualShaderEditor *singleton;
 
 	struct DragOp {
-		VisualShader::Type type;
-		int node;
+		VisualShader::Type type = VisualShader::Type::TYPE_MAX;
+		int node = 0;
 		Vector2 from;
 		Vector2 to;
 	};
@@ -462,9 +462,9 @@ public:
 class VisualShaderNodePortPreview : public Control {
 	GDCLASS(VisualShaderNodePortPreview, Control);
 	Ref<VisualShader> shader;
-	VisualShader::Type type;
-	int node;
-	int port;
+	VisualShader::Type type = VisualShader::Type::TYPE_MAX;
+	int node = 0;
+	int port = 0;
 	void _shader_changed(); //must regen
 protected:
 	void _notification(int p_what);
@@ -473,7 +473,6 @@ protected:
 public:
 	virtual Size2 get_minimum_size() const override;
 	void setup(const Ref<VisualShader> &p_shader, VisualShader::Type p_type, int p_node, int p_port);
-	VisualShaderNodePortPreview();
 };
 
 class VisualShaderConversionPlugin : public EditorResourceConversionPlugin {