API Compatibility

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Status: GitHub Wiki source for Electron2D 0.1.0 Preview. Updated: 2026-06-22.

Electron2D documents the agreed 2D runtime API subset here. This table is a release guard for public types included in the preview surface.

The clean rewrite baseline currently exports the first object-model, resource UID, 2D math, random number generator, identity, Variant value-carrier, C# scripting marker attributes, keyboard/mouse/gamepad/touch input event baseline, action input baseline, UI input dispatch/focus/layout baseline, UI theme resources, theme overrides, high-DPI scaling helpers, tooltip hooks, UI containers, basic UI controls, structured UI controls, display mobile state baseline, texture/viewport/shader, tile set and tile map layer runtime baseline, text/UI baseline, translation baseline, frame-based sprite animation, resource animation tracks, AnimationPlayer, Tween, AudioStream metadata baseline, AudioServer query boundary and bus routing, AudioStreamPlayer and AudioStreamPlayer2D playback nodes, rendering server boundary, physics server RID-boundary types, first 2D physics nodes, concrete 2D shape resources, physics material resource, Area2D overlap signals baseline, direct 2D physics query baseline, fixed physics tick, basic rigid body movement, CharacterBody2D kinematic movement baseline and debug collision shape hooks. Planned entries below describe the target public surface for future tasks, not implemented API.

Status Legend

Status	Meaning
Supported	Implemented, tested and documented
Partial	Implemented only for the described subset
Experimental	Implemented but allowed to change before stable release
Planned	Required by 0.1.0 Preview, not implemented yet

Current Public Runtime Surface

API	Reference	Status	Notes
Electron2D.AnimatedSprite2D	AnimatedSprite2D	Partial	Frame-based 2D animation node with SpriteFrames, autoplay, play/pause/stop, frame progress, loop handling and canvas submission of the current frame.
Electron2D.Animation	Animation	Partial	Resource for value tracks and method call tracks with deterministic key ordering and interpolation for the supported Variant subset.
Electron2D.Animation+InterpolationTypeEnum	Animation.InterpolationType	Partial	Nearest and linear interpolation modes for value tracks.
Electron2D.Animation+LoopModeEnum	Animation.LoopMode	Partial	None and linear loop modes for resource animation playback.
Electron2D.Animation+TrackTypeEnum	Animation.TrackType	Partial	Value and method track kinds for the 0.1 animation baseline.
Electron2D.AnimationLibrary	AnimationLibrary	Partial	Named animation resource collection with deterministic name listing and add/remove/rename operations.
Electron2D.AnimationPlayer	AnimationPlayer	Partial	Node that plays animation libraries, applies value tracks through NodePath, calls method tracks, queues animations and emits animation_finished.
Electron2D.Area2D	Area2D	Partial	RID lifecycle, monitoring flags, priority, transform sync, AABB overlap snapshots, body_entered/body_exited and area_entered/area_exited signals.
Electron2D.AtlasTexture	AtlasTexture	Partial	Atlas region resource with atlas, region, margin, filter clip and transparency delegation.
Electron2D.ImageTexture	ImageTexture	Partial	Image-backed texture resource loaded from PNG files or mounted res:// project resources.
Electron2D.AudioServer	AudioServer	Partial	Process-wide audio query boundary with mix rate, output latency, speaker mode, Master, user buses, routing path, bus volume, mute, solo and lock/unlock. Internal voice handles are not public API.
Electron2D.AudioServer+SpeakerMode	AudioServer.SpeakerMode	Partial	Speaker layout values for stereo and surround output queries.
Electron2D.AudioStream	AudioStream	Partial	Base audio stream resource with length, monophonic, meta-stream and sample eligibility metadata queries.
Electron2D.AudioStreamPlayer	AudioStreamPlayer	Partial	Scene node for non-positional playback with play/stop/pause/resume, seek, autoplay, loop metadata, bus selection, volume, pitch and polyphony.
Electron2D.AudioStreamPlayer2D	AudioStreamPlayer2D	Partial	2D playback node with the shared playback API plus bus selection, distance attenuation and left/right panning.
Electron2D.BaseButton	BaseButton	Supported	Shared button input, focus, disabled state, toggle state, action mode and button_down/button_up/pressed/toggled signals.
Electron2D.BaseButton+ActionModeEnum	BaseButton.ActionMode	Supported	Press and release activation modes for button controls.
Electron2D.BoxContainer	BoxContainer	Supported	Single-axis UI container with separation, alignment, expand/fill size flags and spacer creation.
Electron2D.BoxContainerAlignmentMode	BoxContainer.AlignmentMode	Supported	Begin, center and end alignment values for unexpanded space in a box container.
Electron2D.Button	Button	Supported	Text button control backed by BaseButton input, signals, minimum size and basic text drawing.
Electron2D.Callable	Callable	Partial	Target-method and C# action callable baseline for synchronous signal emission and deferred calls.
Electron2D.CallbackTweener	CallbackTweener	Partial	Tween step that invokes a Callable once when the sequence reaches it.
Electron2D.Camera2D	Camera2D	Partial	Current 2D camera selection, target/center/rotation queries, offset, zoom and documented smoothing no-op baseline.
Electron2D.CanvasItem	CanvasItem	Partial	Visibility, inherited modulate, self-modulate, z-index, y-sort flag, show/hide and GetWorld2D() baseline.
Electron2D.CanvasLayer	CanvasLayer	Partial	Layer, visibility and transform baseline for independent 2D canvas ordering.
Electron2D.CapsuleShape2D	CapsuleShape2D	Partial	Capsule shape resource with radius/height validation, RID creation and AOT-safe serialization metadata.
Electron2D.CenterContainer	CenterContainer	Supported	UI container that keeps direct child controls at minimum size and positions them around the center.
Electron2D.CharacterBody2D	CharacterBody2D	Partial	Kinematic character body with Velocity, MoveAndSlide(), floor/wall/ceiling state, floor snap and platform velocity baseline.
Electron2D.CharacterBody2D+MotionModeEnum	CharacterBody2D.MotionMode	Partial	Grounded and floating collision classification modes.
Electron2D.CharacterBody2D+PlatformOnLeaveEnum	CharacterBody2D.PlatformOnLeave	Partial	Platform leave policy values reserved for the kinematic movement API.
Electron2D.CheckBox	CheckBox	Supported	Toggle text button with check indicator, inherited button signals and default toggle behavior.
Electron2D.CircleShape2D	CircleShape2D	Partial	Circle shape resource with radius validation, RID creation and AOT-safe serialization metadata.
Electron2D.Collections.Array	Array	Partial	Mutable reference-like Variant list for the 0.1 closed Variant type set.
Electron2D.Collections.Dictionary	Dictionary	Partial	Mutable reference-like Variant key/value map for the 0.1 closed Variant type set.
Electron2D.CollisionObject2D	CollisionObject2D	Partial	Base collision object with GetRid(), collision layer/mask storage, RID lifecycle and transform sync.
Electron2D.CollisionShape2D	CollisionShape2D	Partial	Shape reference, disabled/one-way flags, debug visualization color and concave-shape static-body validation.
Electron2D.Color	Color	Partial	RGBA value type baseline with arithmetic, interpolation, clamp and HTML conversion.
Electron2D.ConcavePolygonShape2D	ConcavePolygonShape2D	Partial	Concave segment-pair shape resource restricted to StaticBody2D through CollisionShape2D.
Electron2D.ConnectFlags	ConnectFlags	Partial	Signal connection flag names are declared; advanced flag semantics are still planned.
Electron2D.Container	Container	Supported	Base UI layout container with direct child control placement and queued sort baseline.
Electron2D.Control	Control	Supported	UI base node with anchors, offsets, computed rect, minimum size, size flags, grow direction, clipping hit-test, theme inheritance, local theme overrides, high-DPI scaling, tooltip hooks, _GuiInput, MouseFilter, FocusMode, event acceptance and focus helpers.
Electron2D.ConvexPolygonShape2D	ConvexPolygonShape2D	Partial	Convex polygon shape resource with finite point validation and AOT-safe array serialization.
Electron2D.DisplayServer	DisplayServer	Partial	Display safe area, screen orientation and virtual keyboard request state without public native handles.
Electron2D.DisplayServer+ScreenOrientation	DisplayServer.ScreenOrientation	Partial	Orientation request values for landscape, portrait, reverse and sensor-driven modes.
Electron2D.DisplayServer+VirtualKeyboardType	DisplayServer.VirtualKeyboardType	Partial	Virtual keyboard layout request values for text, multiline, numeric, phone, email, password and URL input.
Electron2D.Error	Error	Partial	Minimal signal/runtime error result values.
Electron2D.ExportAttribute	ExportAttribute / [Export]	Partial	Marker attribute for script fields/properties included in explicit serialization and Inspector metadata.
Electron2D.FocusMode	Control.FocusMode	Supported	Focus mode values for disabled, click-only and direct/all focus in the UI input baseline.
Electron2D.Font	Font	Supported	Base font resource with string measurement, glyph availability, fallback layout and internal cache.
Electron2D.GridContainer	GridContainer	Supported	Row-major UI grid container with column count and theme separation constants.
Electron2D.GrowDirection	Control.GrowDirection	Supported	Grow direction values used when Control minimum size expands the requested rectangle.
Electron2D.HBoxContainer	HBoxContainer	Supported	Horizontal specialization of BoxContainer.
Electron2D.HorizontalAlignment	HorizontalAlignment	Supported	Horizontal alignment values used by text drawing APIs.
Electron2D.Input	Input	Partial	Process-wide action state queries for pressed, just-pressed, strength and four-action vectors.
Electron2D.InputEvent	InputEvent	Partial	Base input event resource with device id for lifecycle dispatch.
Electron2D.InputEventAction	InputEventAction	Partial	Direct action input event with action name, pressed state and strength for tests, tooling and automation.
Electron2D.InputEventFromWindow	InputEventFromWindow	Partial	Window id layer for platform-backed keyboard and mouse events.
Electron2D.InputEventJoypadButton	InputEventJoypadButton	Partial	Gamepad button press/release event with button index, pressed state, pressure and action binding support.
Electron2D.InputEventJoypadMotion	InputEventJoypadMotion	Partial	Gamepad axis motion event with normalized axis value and signed action binding support.
Electron2D.InputEventKey	InputEventKey	Partial	Keyboard key down/up, echo and native text input Unicode scalar baseline.
Electron2D.InputEventMouse	InputEventMouse	Partial	Shared mouse position and button mask baseline.
Electron2D.InputEventMouseButton	InputEventMouseButton	Partial	Mouse button down/up and wheel-as-button baseline.
Electron2D.InputEventMouseMotion	InputEventMouseMotion	Partial	Mouse position, relative motion and button mask baseline.
Electron2D.InputEventScreenDrag	InputEventScreenDrag	Partial	Multitouch drag event with index, position, relative motion, pressure, tilt and pen inversion fields.
Electron2D.InputEventScreenTouch	InputEventScreenTouch	Partial	Multitouch press/release/cancel event with index, position, pressed, double-tap and canceled fields.
Electron2D.InputEventWithModifiers	InputEventWithModifiers	Partial	Modifier state layer for keyboard and future mouse input events.
Electron2D.InputMap	InputMap	Partial	Process-wide action registry with deadzones, keyboard/mouse/gamepad bindings, direct action matching and internal settings serialization.
Electron2D.IntervalTweener	IntervalTweener	Partial	Tween step that consumes sequence time without writing properties or calling user callbacks.
Electron2D.ItemList	ItemList	Supported	Flat selectable UI list with item text, optional icons, disabled/selectable flags, single/multi selection, pointer activation and selection signals.
Electron2D.ItemList+SelectModeEnum	ItemList.SelectMode	Supported	Single and multi-selection modes for ItemList.
Electron2D.JoyAxis	JoyAxis	Partial	Standardized gamepad axis values for motion events, action bindings and Input.GetJoyAxis().
Electron2D.JoyButton	JoyButton	Partial	Standardized gamepad button values for button events, action bindings and Input.IsJoyButtonPressed().
Electron2D.Key	Key	Partial	Printable ASCII, core special key constants and mobile back/menu navigation keys used by keyboard mapping.
Electron2D.KeyLocation	KeyLocation	Partial	Left/right modifier key location baseline.
Electron2D.KinematicCollision2D	KinematicCollision2D	Partial	Collision result object returned by body movement methods, with collider, normal, travel, remainder and velocity data.
Electron2D.Label	Label	Supported	Single-line plain text control backed by theme font overrides and CanvasItem.DrawString.
Electron2D.LineEdit	LineEdit	Supported	Single-line text input with caret, max length, placeholder, secret drawing, editing keys and text changed/submitted/rejected signals.
Electron2D.MarginContainer	MarginContainer	Supported	UI container that insets direct child controls using theme margin constants.
Electron2D.Material	Material	Partial	Base visual material resource with NextPass and RenderPriority storage for future renderer ordering.
Electron2D.Mathf	Mathf	Partial	Basic constants, approximate comparison, clamp, interpolation, angle conversion, modulo and snapping helpers.
Electron2D.MouseButton	MouseButton	Partial	Left/right/middle, wheel and extra button constants for mouse events.
Electron2D.MouseButtonMask	MouseButtonMask	Partial	Held mouse button bit flags converted from platform state.
Electron2D.MouseFilter	Control.MouseFilter	Supported	Mouse filter values for stop, pass and ignore GUI input routing.
Electron2D.NinePatchRect	NinePatchRect	Supported	Texture-backed nine-patch control with source region, margins, optional center drawing and stretch/tile/tile-fit center axes.
Electron2D.NinePatchRect+AxisStretchModeEnum	NinePatchRect.AxisStretchMode	Supported	Stretch, tile and tile-fit center-axis expansion modes for NinePatchRect.
Electron2D.Object	Object	Partial	Instance id, Free(), CallDeferred(), IsQueuedForDeletion() and IsInstanceValid() baseline.
Electron2D.Node	Node	Partial	Lifecycle, hierarchy, Owner, groups, reparent/move, QueueFree() and GetViewport() baseline.
Electron2D.Node2D	Node2D	Partial	Local/global 2D position, rotation, scale, transform conversion and transform-preserving reparent baseline.
Electron2D.NodePath	NodePath	Partial	Relative/absolute node path parsing and GetNode()/GetNodeOrNull() resolution baseline.
Electron2D.PackedScene	PackedScene	Partial	In-memory pack/instantiate baseline for owned node subtrees.
Electron2D.ProcessMode	Node.ProcessMode	Partial	Node processing mode values for paused and unpaused scene tree callbacks.
Electron2D.Panel	Panel	Supported	Rectangular UI panel control with basic canvas drawing and inherited layout/input state.
Electron2D.PhysicsBody2D	PhysicsBody2D	Partial	Base class for body nodes with shared PhysicsMaterialOverride and MoveAndCollide() kinematic movement helper.
Electron2D.PhysicsDirectSpaceState2D	PhysicsDirectSpaceState2D	Partial	Managed AABB baseline for IntersectRay, IntersectPoint and IntersectShape over active CollisionShape2D nodes.
Electron2D.PhysicsMaterial	PhysicsMaterial	Partial	Body material resource with Friction, Bounce, Rough, Absorbent, validation and AOT-safe serialization metadata.
Electron2D.PhysicsPointQueryParameters2D	PhysicsPointQueryParameters2D	Partial	Point query parameters for direct 2D physics queries, including mask, body/area flags and excluded RIDs.
Electron2D.PhysicsRayQueryParameters2D	PhysicsRayQueryParameters2D	Partial	Ray query parameters for direct 2D physics queries, including endpoints, mask, body/area flags, hit-from-inside and excluded RIDs.
Electron2D.PhysicsServer2D	PhysicsServer2D	Partial	Low-level 2D physics server facade for RID allocation, spaces, shape kinds and internal backend swapping; no real simulation yet.
Electron2D.PhysicsServer2D+ProcessInfo	PhysicsServer2D.ProcessInfo	Partial	Process statistic enum; values currently report 0 until real simulation is implemented.
Electron2D.PhysicsServer2D+ShapeType	PhysicsServer2D.ShapeType	Partial	Shape type enum for physics server shape RID creation.
Electron2D.PhysicsServer2D+SpaceParameter	PhysicsServer2D.SpaceParameter	Partial	Space parameter enum with value round-trip through the server boundary.
Electron2D.PhysicsShapeQueryParameters2D	PhysicsShapeQueryParameters2D	Partial	Shape query parameters for direct 2D physics queries, including shape resource, transform, motion, margin, mask and excluded RIDs.
Electron2D.PopupMenu	PopupMenu	Supported	Runtime command menu with text, icon, checkable and separator items, disabled state, popup rectangle, index/id activation signals and hide-after-activation behavior.
Electron2D.ProgressBar	ProgressBar	Supported	Read-only Range visual with progress fill, percentage label option and indeterminate state flag.
Electron2D.PropertyTweener	PropertyTweener	Partial	Tween step that captures a public property or field value and writes eased values until completion.
Electron2D.RandomNumberGenerator	RandomNumberGenerator	Partial	RNG baseline with seed/state replay, integer/float ranges and PCG32 sequence policy for 0.1.
Electron2D.Range	Range	Supported	Numeric range base with min/max, step, page, value, ratio, rounding, allow-limits flags and value_changed signal.
Electron2D.RayCast2D	RayCast2D	Partial	Ray query settings, forced update and cached AABB hit result through PhysicsDirectSpaceState2D.
Electron2D.Rect2	Rect2	Partial	Floating-point axis-aligned rectangle baseline with intersection, merge, grow and normalization helpers.
Electron2D.Rect2I	Rect2I	Partial	Integer axis-aligned rectangle baseline with intersection, merge, grow and normalization helpers.
Electron2D.RectangleShape2D	RectangleShape2D	Partial	Rectangle shape resource with size validation, RID creation and AOT-safe serialization metadata.
Electron2D.RefCounted	RefCounted	Partial	Manual reference count baseline with Reference(), Unreference() and GetReferenceCount().
Electron2D.RenderingServer	RenderingServer	Partial	Singleton-style facade for active renderer profile and feature flags; concrete backends remain internal.
Electron2D.RenderingServer+RenderingFeature	RenderingServer feature enum	Partial	0.1 feature flags for compatibility and standard renderer profiles.
Electron2D.RenderingServer+RenderingProfile	RenderingServer profile enum	Partial	Compatibility and Standard renderer profiles.
Electron2D.Resource	Resource	Partial	ResourceName, ResourcePath, ResourceLocalToScene, ResourceSceneUniqueId and TakeOverPath().
Electron2D.ResourceUid	ResourceUID / ResourceUid	Partial	Stable uid:// conversion and in-memory UID-to-path mapping for resource references.
Electron2D.Rid	RID	Partial	Opaque resource identifier baseline with invalid ID 0, equality, hashing and ordering.
Electron2D.RigidBody2D	RigidBody2D	Partial	RID lifecycle, stored rigid body properties, transform sync, fixed-step velocity movement and AABB sweep against static bodies.
Electron2D.RigidBody2D+CenterOfMassModeEnum	RigidBody2D.CenterOfMassMode	Partial	Center-of-mass mode values for RigidBody2D.
Electron2D.RigidBody2D+FreezeModeEnum	RigidBody2D.FreezeMode	Partial	Freeze behavior values for RigidBody2D.
Electron2D.SceneTree	SceneTree	Partial	Initial root node, current scene, deterministic tree traversal for tests and future editor/runtime tools, debug collision hint, scene change, group queries/calls, deferred queue flush and queued deletion flush.
Electron2D.ScrollContainer	ScrollContainer	Supported	Scrollable clipped UI container with programmatic offsets, axis modes and descendant reveal helper.
Electron2D.ScrollHintMode	ScrollContainer.ScrollHintMode	Supported	Stored scroll hint policy values accepted by the preview scroll API.
Electron2D.ScrollMode	ScrollContainer.ScrollMode	Supported	Axis scroll policy values for disabled, auto and scrollbar presentation modes.
Electron2D.SegmentShape2D	SegmentShape2D	Partial	Segment shape resource with endpoint validation, RID creation and AOT-safe serialization metadata.
Electron2D.Shader	Shader	Partial	Canvas item shader resource storing source code for import-time compilation.
Electron2D.Shader+Mode	Shader.Mode	Partial	0.1 canvas item shader mode subset.
Electron2D.ShaderMaterial	ShaderMaterial	Partial	Material resource with Shader, supported uniform values, Texture2D samplers and fail-closed reserved built-in validation.
Electron2D.Shape2D	Shape2D	Partial	Base shape resource for CollisionShape2D with lazy physics RID creation and cleanup.
Electron2D.SignalAttribute	SignalAttribute / [Signal]	Partial	Marker attribute for script delegates backed by explicit signal metadata and the existing Connect()/EmitSignal() API.
Electron2D.SizeFlags	Control.SizeFlags	Supported	Layout flags used by containers for shrink, fill, expand, expand-fill and centered/end placement.
Electron2D.Slider	Slider	Supported	Editable horizontal Range control with pointer, touch, keyboard and gamepad value input.
Electron2D.Sprite2D	Sprite2D	Partial	Texture, centered/offset drawing rect, region rect, flip flags, pixel opacity and internal submission baseline.
Electron2D.SpriteFrames	SpriteFrames	Partial	Resource for named texture-frame animations, frame durations, speed and loop modes consumed by AnimatedSprite2D.
Electron2D.SpriteFrames+LoopModeEnum	SpriteFrames.LoopMode	Partial	Loop mode values for none, linear and pingpong playback.
Electron2D.StaticBody2D	StaticBody2D	Partial	RID lifecycle, constant velocity storage and transform sync baseline.
Electron2D.StringName	StringName	Partial	Immutable interned-name baseline with ordinal equality, hashing, empty/default semantics and string conversion.
Electron2D.StyleBox	StyleBox	Supported	Base UI style-box resource with minimum-size margins and draw hooks for themed controls.
Electron2D.StyleBoxFlat	StyleBoxFlat	Supported	Flat style-box resource with background color, border color and border-width drawing.
Electron2D.TabContainer	TabContainer	Supported	Runtime tab container that treats direct child controls as tab pages, stores titles/icons/disabled/hidden state, switches by pointer input and emits tab_changed.
Electron2D.TabContainer+AlignmentModeEnum	TabContainer.AlignmentMode	Supported	Left, center and right tab header alignment values.
Electron2D.TabContainer+TabPositionEnum	TabContainer.TabPosition	Supported	Top and bottom tab header placement values.
Electron2D.Texture2D	Texture2D	Partial	Abstract texture resource baseline for size, alpha, mipmaps and pixel opacity queries.
Electron2D.TextureButton	TextureButton	Supported	Texture-state button with normal, pressed, hover, disabled, focused and click-mask texture properties plus stretch mode.
Electron2D.TextureButton+StretchModeEnum	TextureButton.StretchMode	Supported	Scale, tile, keep, centered and aspect-preserving draw modes for TextureButton.
Electron2D.TextureRect	TextureRect	Supported	Texture display control with expand mode, stretch mode, horizontal/vertical flip and minimum-size behavior.
Electron2D.TextureRect+ExpandModeEnum	TextureRect.ExpandMode	Supported	Keep-size, ignore-size and fit width/height modes for texture minimum-size behavior.
Electron2D.TextureRect+StretchModeEnum	TextureRect.StretchMode	Supported	Scale, tile, keep, centered and aspect-preserving draw modes for TextureRect.
Electron2D.Theme	Theme	Supported	UI theme resource with colors, constants, fonts, font sizes, icons, style boxes, defaults, AOT-safe value serialization and branch lookup through Control.
Electron2D.TileData	TileData	Partial	Tile metadata resource with modulation, texture origin, z-index and per-layer collision polygon settings.
Electron2D.TileMapLayer	TileMapLayer	Partial	Runtime tile map layer with cell storage, coordinate conversion, canvas submission, body RID queries and one-way tile collision shapes.
Electron2D.TileSet	TileSet	Partial	Tile set resource with tile size, source id mapping, source lookup and deterministic source listing.
Electron2D.TileSetAtlasSource	TileSetAtlasSource	Partial	Atlas-backed tile source with texture region size, tile registration, tile data lookup and source rectangle queries.
Electron2D.TileSetSource	TileSetSource	Partial	Base resource type for tile sources stored in TileSet.
Electron2D.ToolAttribute	ToolAttribute / [Tool]	Experimental	Marker attribute for editor-time script intent; current metadata marks it experimental and sandboxed.
Electron2D.Transform2D	Transform2D	Partial	2D basis/origin transform baseline with point transforms, composition and inverse.
Electron2D.Translation	Translation	Partial	Locale-bound resource with source message keys, optional contexts and deterministic message listing.
Electron2D.TranslationServer	TranslationServer	Partial	Process-wide locale selection, translation registry, exact/base/fallback lookup and key fallback.
Electron2D.Tree	Tree	Supported	Hierarchical UI control with root item, hidden-root mode, columns, titles, visible-item hit testing, selection state, collapsed descendants and selection/collapse signals.
Electron2D.Tree+SelectModeEnum	Tree.SelectMode	Supported	Single, row and multi-selection mode values for Tree.
Electron2D.TreeItem	TreeItem	Supported	Tree row object with parent/child navigation, per-column text/icon/selectable/selected state and collapsed visible traversal support.
Electron2D.Tween	Tween	Partial	Sequential runtime tween with property, interval and callback steps, easing, pause/play/stop, kill, manual stepping and completion signals.
Electron2D.Tween+EaseType	Tween.EaseType	Partial	Ease mode enum for in, out, in-out and out-in interpolation.
Electron2D.Tween+TransitionType	Tween.TransitionType	Partial	Transition curve enum for linear and deterministic curved interpolation modes.
Electron2D.Tweener	Tweener	Partial	Public base type for concrete tween sequence steps.
Electron2D.VBoxContainer	VBoxContainer	Supported	Vertical specialization of BoxContainer.
Electron2D.Variant	Variant	Partial	Closed 0.1 value carrier for nil, primitives, enum-as-int, 2D math, identity handles, Object-derived values, Callable and Electron2D collections.
Electron2D.Variant+Type	Variant.Type	Partial	Closed 0.1 Variant type enum; 3D, Signal and packed arrays are intentionally excluded for now.
Electron2D.Vector2	Vector2	Partial	Floating-point 2D vector baseline with arithmetic, length, dot/cross, interpolation and formatting.
Electron2D.Vector2I	Vector2I	Partial	Integer 2D vector baseline with arithmetic, length, aspect and conversions.
Electron2D.VerticalAlignment	VerticalAlignment	Supported	Vertical alignment values used by text controls.
Electron2D.Viewport	Viewport	Partial	Runtime 2D viewport subset with current camera, visible rect, canvas transform, pixel snapping, root instance and input handled-state baseline.
Electron2D.ViewportTexture	ViewportTexture	Partial	Dynamic viewport texture returned by Viewport.GetTexture() with scene-local texture metadata.
Electron2D.World2D	World2D	Partial	2D world object exposing DirectSpaceState for direct physics queries without backend handles.

Planned 2D Surface

API	Reference	Status	Notes
Electron2D.Timer	Timer	Planned	Timer node.