Signal2

Types

• enum DuplicateFlags
• enum InternalMode
• enum ProcessMode
• enum ProcessThreadGroup
• struct ProcessThreadMessages
• class Signal1

  Signal support.

• class Signal3

  Signal support.

Type members

• static let notificationApplicationFocusIn: Int

  Notification received from the OS when the application is focused, i.e. when changing the focus from the OS desktop or a thirdparty application to any open window of the Godot instance.

• static let notificationApplicationFocusOut: Int

  Notification received from the OS when the application is defocused, i.e. when changing the focus from any open window of the Godot instance to the OS desktop or a thirdparty application.

• static let notificationApplicationPaused: Int

  Notification received from the OS when the application is paused.

• static let notificationApplicationResumed: Int

  Notification received from the OS when the application is resumed.

• static let notificationChildOrderChanged: Int

  Notification received when the list of children is changed. This happens when child nodes are added, moved or removed.

• static let notificationCrash: Int

  Notification received from Godot’s crash handler when the engine is about to crash.

• static let notificationDisabled: Int

  Notification received when the node is disabled. See .disabled.

• static let notificationDragBegin: Int

  Notification received when a drag operation begins. All nodes receive this notification, not only the dragged one.

• static let notificationDragEnd: Int

  Notification received when a drag operation ends.

• static let notificationEditorPostSave: Int

  Notification received right after the scene with the node is saved in the editor. This notification is only sent in the Godot editor and will not occur in exported projects.

• static let notificationEditorPreSave: Int

  Notification received right before the scene with the node is saved in the editor. This notification is only sent in the Godot editor and will not occur in exported projects.

• static let notificationEnabled: Int

  Notification received when the node is enabled again after being disabled. See .disabled.

• static let notificationEnterTree: Int

  Notification received when the node enters a SceneTree.

• static let notificationExitTree: Int

  Notification received when the node is about to exit a SceneTree.

• static let notificationInternalPhysicsProcess: Int

  Notification received every frame when the internal physics process flag is set (see setPhysicsProcessInternal(enable:)).

• static let notificationInternalProcess: Int

  Notification received every frame when the internal process flag is set (see setProcessInternal(enable:)).

• static let notificationMovedInParent: Int

  Deprecated. This notification is no longer emitted. Use notificationChildOrderChanged instead.

• static let notificationOsImeUpdate: Int

  Notification received from the OS when an update of the Input Method Engine occurs (e.g. change of IME cursor position or composition string).

• static let notificationOsMemoryWarning: Int

  Notification received from the OS when the application is exceeding its allocated memory.

• static let notificationParented: Int

  Notification received when a node is set as a child of another node.

• static let notificationPathRenamed: Int

  Notification received when the node’s name or one of its parents’ name is changed. This notification is not received when the node is removed from the scene tree to be added to another parent later on.

• static let notificationPaused: Int

  Notification received when the node is paused.

• static let notificationPhysicsProcess: Int

  Notification received every frame when the physics process flag is set (see setPhysicsProcess(enable:)).

• static let notificationPostEnterTree: Int

  Notification received when the node is ready, just before notificationReady is received. Unlike the latter, it’s sent every time the node enters the tree, instead of only once.

• static let notificationProcess: Int

  Notification received every frame when the process flag is set (see setProcess(enable:)).

• static let notificationReady: Int

  Notification received when the node is ready. See _ready.

• static let notificationSceneInstantiated: Int

  Notification received by scene owner when its scene is instantiated.

• static let notificationTextServerChanged: Int

  Notification received when text server is changed.

• static let notificationTranslationChanged: Int

  Notification received when translations may have changed. Can be triggered by the user changing the locale. Can be used to respond to language changes, for example to change the UI strings on the fly. Useful when working with the built-in translation support, like tr(message:context:).

• static let notificationUnparented: Int

  Notification received when a node is unparented (parent removed it from the list of children).

• static let notificationUnpaused: Int

  Notification received when the node is unpaused.

• static let notificationVpMouseEnter: Int

  Notification received when the mouse cursor enters the Viewport‘s visible area, that is not occluded behind other Controls or Windows, provided its guiDisableInput is false and regardless if it’s currently focused or not.

• static let notificationVpMouseExit: Int

  Notification received when the mouse cursor leaves the Viewport‘s visible area, that is not occluded behind other Controls or Windows, provided its guiDisableInput is false and regardless if it’s currently focused or not.

• static let notificationWmAbout: Int

  Notification received from the OS when a request for “About” information is sent.

• static let notificationWmCloseRequest: Int

  Notification received from the OS when a close request is sent (e.g. closing the window with a “Close” button or [kbd]Alt + F4[/kbd]).

• static let notificationWmDpiChange: Int

  Notification received from the OS when the screen’s DPI has been changed. Only implemented on macOS.

• static let notificationWmGoBackRequest: Int

  Notification received from the OS when a go back request is sent (e.g. pressing the “Back” button on Android).

• static let notificationWmMouseEnter: Int

  Notification received when the mouse enters the window.

• static let notificationWmMouseExit: Int

  Notification received when the mouse leaves the window.

• static let notificationWmSizeChanged: Int

  Notification received from the OS when the window is resized.

• static let notificationWmWindowFocusIn: Int

  Notification received when the node’s parent Window is focused. This may be a change of focus between two windows of the same engine instance, or from the OS desktop or a third-party application to a window of the game (in which case notificationApplicationFocusIn is also emitted).

• static let notificationWmWindowFocusOut: Int

  Notification received when the node’s parent Window is defocused. This may be a change of focus between two windows of the same engine instance, or from a window of the game to the OS desktop or a third-party application (in which case notificationApplicationFocusOut is also emitted).

• static func printOrphanNodes()

  Prints all orphan nodes (nodes outside the SceneTree). Used for debugging.

• class var godotClassName: StringName

Instance members

• var childEnteredTree: Signal1

  Emitted when a child node enters the scene tree, either because it entered on its own or because this node entered with it.

• var childExitingTree: Signal2

  Emitted when a child node is about to exit the scene tree, either because it is being removed or freed directly, or because this node is exiting the tree.

• var childOrderChanged: SimpleSignal

  Emitted when the list of children is changed. This happens when child nodes are added, moved or removed.

• var editorDescription: String

  Add a custom description to a node. It will be displayed in a tooltip when hovered in editor’s scene tree.

• var multiplayer: MultiplayerAPI?

  The MultiplayerAPI instance associated with this node. See getMultiplayer(forPath:).

• var name: StringName

  The name of the node. This name is unique among the siblings (other child nodes from the same parent). When set to an existing name, the node will be automatically renamed.

• var owner: Node?

  The node owner. A node can have any ancestor node as owner (i.e. a parent, grandparent, etc. node ascending in the tree). This implies that addChild(node:forceReadableName:`internal`:) should be called before setting the owner, so that this relationship of parenting exists. When saving a node (using PackedScene), all the nodes it owns will be saved with it. This allows for the creation of complex scene trees, with instancing and subinstancing.

• var processMode: Node.ProcessMode

  Can be used to pause or unpause the node, or make the node paused based on the SceneTree, or make it inherit the process mode from its parent (default).

• var processPhysicsPriority: Int32

  Similar to processPriority but for notificationPhysicsProcess, _physicsProcess(delta:) or the internal version.

• var processPriority: Int32

  The node’s priority in the execution order of the enabled processing callbacks (i.e. notificationProcess, notificationPhysicsProcess and their internal counterparts). Nodes whose process priority value is lower will have their processing callbacks executed first.

• var processThreadGroup: Node.ProcessThreadGroup

  Set the process thread group for this node (basically, whether it receives notificationProcess, notificationPhysicsProcess, _process(delta:) or _physicsProcess(delta:) (and the internal versions) on the main thread or in a sub-thread.

• var processThreadGroupOrder: Int32

  Change the process thread group order. Groups with a lesser order will process before groups with a greater order. This is useful when a large amount of nodes process in sub thread and, afterwards, another group wants to collect their result in the main thread, as an example.

• var processThreadMessages: Node.ProcessThreadMessages

  Set whether the current thread group will process messages (calls to callDeferredThreadGroup(method:) on threads, and whether it wants to receive them during regular process or physics process callbacks.

• var ready: SimpleSignal

  Emitted when the node is ready. Comes after _ready callback and follows the same rules.

• var renamed: SimpleSignal

  Emitted when the node is renamed.

• var replacingBy: Signal3

  Emitted when this node is being replaced by the node, see replaceBy(node:keepGroups:).

• var sceneFilePath: String

  If a scene is instantiated from a file, its topmost node contains the absolute file path from which it was loaded in sceneFilePath (e.g. res://levels/1.tscn). Otherwise, sceneFilePath is set to an empty string.

• var treeEntered: SimpleSignal

  Emitted when the node enters the tree.

• var treeExited: SimpleSignal

  Emitted after the node exits the tree and is no longer active.

• var treeExiting: SimpleSignal

  Emitted when the node is still active but about to exit the tree. This is the right place for de-initialization (or a “destructor”, if you will).

• var uniqueNameInOwner: Bool

  Sets this node’s name as a unique name in its owner. This allows the node to be accessed as %Name instead of the full path, from any node within that scene.

• func addChild(node: Node?, forceReadableName: Bool, internal: Node.InternalMode)

  Adds a child node. Nodes can have any number of children, but every child must have a unique name. Child nodes are automatically deleted when the parent node is deleted, so an entire scene can be removed by deleting its topmost node.

• func addSibling(Node?, forceReadableName: Bool)

  Adds a sibling node to current’s node parent, at the same level as that node, right below it.

• func addToGroup(StringName, persistent: Bool)

  Adds the node to a group. Groups are helpers to name and organize a subset of nodes, for example “enemies” or “collectables”. A node can be in any number of groups. Nodes can be assigned a group at any time, but will not be added until they are inside the scene tree (see isInsideTree). See notes in the description, and the group methods in SceneTree.

• func callDeferredThreadGroup(method: StringName, Variant...) -> Variant

  This function is similar to Object/callDeferred(method:) except that the call will take place when the node thread group is processed. If the node thread group processes in sub-threads, then the call will be done on that thread, right before notificationProcess or notificationPhysicsProcess, the _process(delta:) or _physicsProcess(delta:) or their internal versions are called.

• func callThreadSafe(method: StringName, Variant...) -> Variant

  This function ensures that the calling of this function will succeed, no matter whether it’s being done from a thread or not. If called from a thread that is not allowed to call the function, the call will become deferred. Otherwise, the call will go through directly.

• func canProcess() -> Bool

  Returns true if the node can process while the scene tree is paused (see processMode). Always returns true if the scene tree is not paused, and false if the node is not in the tree.

• func createTween() -> Tween?

  Creates a new Tween and binds it to this node. This is equivalent of doing:

• func duplicate(flags: Int32) -> Node?

  Duplicates the node, returning a new node.

• func findChild(pattern: String, recursive: Bool, owned: Bool) -> Node?

  Finds the first descendant of this node whose name matches pattern as in String/match(expr:). Internal children are also searched over (see internal parameter in addChild(node:forceReadableName:`internal`:)).

• func findChildren(pattern: String, type: String, recursive: Bool, owned: Bool) -> ObjectCollection<Node>

  Finds descendants of this node whose name matches pattern as in String/match(expr:), and/or type matches type as in isClass(_:). Internal children are also searched over (see internal parameter in addChild(node:forceReadableName:`internal`:)).

• func findParent(pattern: String) -> Node?

  Finds the first parent of the current node whose name matches pattern as in String/match(expr:).

• func getChild(idx: Int32, includeInternal: Bool) -> Node?

  Returns a child node by its index (see getChildCount(includeInternal:)). This method is often used for iterating all children of a node.

• func getChildCount(includeInternal: Bool) -> Int32

  Returns the number of child nodes.

• func getChildren(includeInternal: Bool) -> ObjectCollection<Node>

  Returns an array of references to node’s children.

• func getGroups() -> VariantCollection<StringName>

  Returns an array listing the groups that the node is a member of.

• func getIndex(includeInternal: Bool) -> Int32

  Returns the node’s order in the scene tree branch. For example, if called on the first child node the position is 0.

• func getLastExclusiveWindow() -> Window?

  Returns the Window that contains this node, or the last exclusive child in a chain of windows starting with the one that contains this node.

• func getMultiplayerAuthority() -> Int32

  Returns the peer ID of the multiplayer authority for this node. See setMultiplayerAuthority(id:recursive:).

• func getNode(path: NodePath) -> Node?

  Fetches a node. The NodePath can be either a relative path (from the current node) or an absolute path (in the scene tree) to a node. If the path does not exist, null is returned and an error is logged. Attempts to access methods on the return value will result in an “Attempt to call on a null instance.” error.

• func getNodeAndResource(path: NodePath) -> GArray

  Fetches a node and one of its resources as specified by the NodePath’s subname (e.g. Area2D/CollisionShape2D:shape). If several nested resources are specified in the NodePath, the last one will be fetched.

• func getNodeOrNull(path: NodePath) -> Node?

  Similar to getNode(path:), but does not log an error if path does not point to a valid Node.

• func getParent() -> Node?

  Returns the parent node of the current node, or null if the node lacks a parent.

• func getPath() -> NodePath

  Returns the absolute path of the current node. This only works if the current node is inside the scene tree (see isInsideTree).

• func getPathTo(node: Node?, useUniquePath: Bool) -> NodePath

  Returns the relative NodePath from this node to the specified node. Both nodes must be in the same scene or the function will fail.

• func getPhysicsProcessDeltaTime() -> Double

  Returns the time elapsed (in seconds) since the last physics-bound frame (see _physicsProcess(delta:)). This is always a constant value in physics processing unless the frames per second is changed via physicsTicksPerSecond.

• func getProcessDeltaTime() -> Double

  Returns the time elapsed (in seconds) since the last process callback. This value may vary from frame to frame.

• func getSceneInstanceLoadPlaceholder() -> Bool

  Returns true if this is an instance load placeholder. See InstancePlaceholder.

• func getTree() -> SceneTree?

  Returns the SceneTree that contains this node. Returns null and prints an error if this node is not inside the scene tree. See also isInsideTree.

• func getTreeString() -> String

  Returns the tree as a String. Used mainly for debugging purposes. This version displays the path relative to the current node, and is good for copy/pasting into the getNode(path:) function. It also can be used in game UI/UX.

• func getTreeStringPretty() -> String

  Similar to getTreeString, this returns the tree as a String. This version displays a more graphical representation similar to what is displayed in the Scene Dock. It is useful for inspecting larger trees.

• func getViewport() -> Viewport?

  Returns the node’s Viewport.

• func getWindow() -> Window?

  Returns the Window that contains this node. If the node is in the main window, this is equivalent to getting the root node (get_tree().get_root()).

• func hasNode(path: NodePath) -> Bool

  Returns true if the node that the NodePath points to exists.

• func hasNodeAndResource(path: NodePath) -> Bool

  Returns true if the NodePath points to a valid node and its subname points to a valid resource, e.g. Area2D/CollisionShape2D:shape. Properties with a non-Resource type (e.g. nodes or primitive math types) are not considered resources.

• func isAncestorOf(node: Node?) -> Bool

  Returns true if the given node is a direct or indirect child of the current node.

• func isDisplayedFolded() -> Bool

  Returns true if the node is folded (collapsed) in the Scene dock. This method is only intended for use with editor tooling.

• func isEditableInstance(node: Node?) -> Bool

  Returns true if node has editable children enabled relative to this node. This method is only intended for use with editor tooling.

• func isGreaterThan(node: Node?) -> Bool

  Returns true if the given node occurs later in the scene hierarchy than the current node.

• func isInGroup(StringName) -> Bool

  Returns true if this node is in the specified group. See notes in the description, and the group methods in SceneTree.

• func isInsideTree() -> Bool

  Returns true if this node is currently inside a SceneTree.

• func isMultiplayerAuthority() -> Bool

  Returns true if the local system is the multiplayer authority of this node.

• func isNodeReady() -> Bool

  Returns true if the node is ready, i.e. it’s inside scene tree and all its children are initialized.

• func isPhysicsProcessing() -> Bool

  Returns true if physics processing is enabled (see setPhysicsProcess(enable:)).

• func isPhysicsProcessingInternal() -> Bool

  Returns true if internal physics processing is enabled (see setPhysicsProcessInternal(enable:)).

• func isProcessing() -> Bool

  Returns true if processing is enabled (see setProcess(enable:)).

• func isProcessingInput() -> Bool

  Returns true if the node is processing input (see setProcessInput(enable:)).

• func isProcessingInternal() -> Bool

  Returns true if internal processing is enabled (see setProcessInternal(enable:)).

• func isProcessingShortcutInput() -> Bool

  Returns true if the node is processing shortcuts (see setProcessShortcutInput(enable:)).

• func isProcessingUnhandledInput() -> Bool

  Returns true if the node is processing unhandled input (see setProcessUnhandledInput(enable:)).

• func isProcessingUnhandledKeyInput() -> Bool

  Returns true if the node is processing unhandled key input (see setProcessUnhandledKeyInput(enable:)).

• func moveChild(childNode: Node?, toIndex: Int32)

  Moves a child node to a different index (order) among the other children. Since calls, signals, etc. are performed by tree order, changing the order of children nodes may be useful. If toIndex is negative, the index will be counted from the end.

• func notifyDeferredThreadGroup(what: Int32)

  Similar to callDeferredThreadGroup(method:), but for notifications.

• func notifyThreadSafe(what: Int32)

  Similar to callThreadSafe(method:), but for notifications.

• func printTree()

  Prints the tree to stdout. Used mainly for debugging purposes. This version displays the path relative to the current node, and is good for copy/pasting into the getNode(path:) function.

• func printTreePretty()

  Similar to printTree, this prints the tree to stdout. This version displays a more graphical representation similar to what is displayed in the Scene Dock. It is useful for inspecting larger trees.

• func propagateCall(method: StringName, args: GArray, parentFirst: Bool)

  Calls the given method (if present) with the arguments given in args on this node and recursively on all its children. If the parentFirst argument is true, the method will be called on the current node first, then on all its children. If parentFirst is false, the children will be called first.

• func propagateNotification(what: Int32)

  Notifies the current node and all its children recursively by calling notification(what:reversed:) on all of them.

• func queueFree()

  Queues a node for deletion at the end of the current frame. When deleted, all of its child nodes will be deleted as well, and all references to the node and its children will become invalid, see Object/free().

• func removeChild(node: Node?)

  Removes a child node. The node is NOT deleted and must be deleted manually.

• func removeFromGroup(StringName)

  Removes a node from the group. Does nothing if the node is not in the group. See notes in the description, and the group methods in SceneTree.

• func reparent(newParent: Node?, keepGlobalTransform: Bool)

  Changes the parent of this Node to the newParent. The node needs to already have a parent.

• func replaceBy(node: Node?, keepGroups: Bool)

  Replaces a node in a scene by the given one. Subscriptions that pass through this node will be lost.

• func requestReady()

  Requests that _ready be called again. Note that the method won’t be called immediately, but is scheduled for when the node is added to the scene tree again. _ready is called only for the node which requested it, which means that you need to request ready for each child if you want them to call _ready too (in which case, _ready will be called in the same order as it would normally).

• func rpc(method: StringName, Variant...) -> GodotError

  Sends a remote procedure call request for the given method to peers on the network (and locally), optionally sending all additional arguments as arguments to the method called by the RPC. The call request will only be received by nodes with the same NodePath, including the exact same node name. Behavior depends on the RPC configuration for the given method, see rpcConfig(method:config:) and [annotation @GDScript.@rpc]. Methods are not exposed to RPCs by default. Returns null.

• func rpcConfig(method: StringName, config: Variant)

  Changes the RPC mode for the given method with the given config which should be null (to disable) or a GDictionary in the form:

• func rpcId(peerId: Int64, method: StringName, Variant...) -> GodotError

  Sends a rpc(method:) to a specific peer identified by peerId (see setTargetPeer(id:)). Returns null.

• func setDeferredThreadGroup(property: StringName, value: Variant)

  Similar to callDeferredThreadGroup(method:), but for setting properties.

• func setDisplayFolded(fold: Bool)

  Sets the folded state of the node in the Scene dock. This method is only intended for use with editor tooling.

• func setEditableInstance(node: Node?, isEditable: Bool)

  Sets the editable children state of node relative to this node. This method is only intended for use with editor tooling.

• func setMultiplayerAuthority(id: Int32, recursive: Bool)

  Sets the node’s multiplayer authority to the peer with the given peer ID. The multiplayer authority is the peer that has authority over the node on the network. Useful in conjunction with rpcConfig(method:config:) and the MultiplayerAPI. Defaults to peer ID 1 (the server). If recursive, the given peer is recursively set as the authority for all children of this node.

• func setPhysicsProcess(enable: Bool)

  Enables or disables physics (i.e. fixed framerate) processing. When a node is being processed, it will receive a notificationPhysicsProcess at a fixed (usually 60 FPS, see physicsTicksPerSecond to change) interval (and the _physicsProcess(delta:) callback will be called if exists). Enabled automatically if _physicsProcess(delta:) is overridden. Any calls to this before _ready will be ignored.

• func setPhysicsProcessInternal(enable: Bool)

  Enables or disables internal physics for this node. Internal physics processing happens in isolation from the normal _physicsProcess(delta:) calls and is used by some nodes internally to guarantee proper functioning even if the node is paused or physics processing is disabled for scripting (setPhysicsProcess(enable:)). Only useful for advanced uses to manipulate built-in nodes’ behavior.

• func setProcess(enable: Bool)

  Enables or disables processing. When a node is being processed, it will receive a notificationProcess on every drawn frame (and the _process(delta:) callback will be called if exists). Enabled automatically if _process(delta:) is overridden. Any calls to this before _ready will be ignored.

• func setProcessInput(enable: Bool)

  Enables or disables input processing. This is not required for GUI controls! Enabled automatically if _input(event:) is overridden. Any calls to this before _ready will be ignored.

• func setProcessInternal(enable: Bool)

  Enables or disabled internal processing for this node. Internal processing happens in isolation from the normal _process(delta:) calls and is used by some nodes internally to guarantee proper functioning even if the node is paused or processing is disabled for scripting (setProcess(enable:)). Only useful for advanced uses to manipulate built-in nodes’ behavior.

• func setProcessShortcutInput(enable: Bool)

  Enables shortcut processing. Enabled automatically if _shortcutInput(event:) is overridden. Any calls to this before _ready will be ignored.

• func setProcessUnhandledInput(enable: Bool)

  Enables unhandled input processing. This is not required for GUI controls! It enables the node to receive all input that was not previously handled (usually by a Control). Enabled automatically if _unhandledInput(event:) is overridden. Any calls to this before _ready will be ignored.

• func setProcessUnhandledKeyInput(enable: Bool)

  Enables unhandled key input processing. Enabled automatically if _unhandledKeyInput(event:) is overridden. Any calls to this before _ready will be ignored.

• func setSceneInstanceLoadPlaceholder(Bool)

  Sets whether this is an instance load placeholder. See InstancePlaceholder.

• func setThreadSafe(property: StringName, value: Variant)

  Similar to callThreadSafe(method:), but for setting properties.

• func updateConfigurationWarnings()

  Updates the warning displayed for this node in the Scene Dock.