Called when the node enters the SceneTree (e.g. upon instancing, scene changing, or after calling addChild in a script). If the node has children, its _enterTree callback will be called first, and then that of the children. Corresponds to the NOTIFICATION_ENTER_TREE notification in GodotObject._notification.
Called when the node is about to leave the SceneTree (e.g. upon freeing, scene changing, or after calling removeChild in a script). If the node has children, its _exitTree callback will be called last, after all its children have left the tree. Corresponds to the NOTIFICATION_EXIT_TREE notification in GodotObject._notification and signal treeExiting. To get notified when the node has already left the active tree, connect to the treeExited
Called when there is an input event. The input event propagates up through the node tree until a node consumes it. It is only called if input processing is enabled, which is done automatically if this method is overridden, and can be toggled with setProcessInput. To consume the input event and stop it propagating further to other nodes, SceneTree.setInputAsHandled can be called. For gameplay input, _unhandledInput and _unhandledKeyInput are usually a better fit as they allow the GUI to intercept the events first.
Called during the physics processing step of the main loop. Physics processing means that the frame rate is synced to the physics, i.e. the delta variable should be constant. It is only called if physics processing is enabled, which is done automatically if this method is overridden, and can be toggled with setPhysicsProcess. Corresponds to the NOTIFICATION_PHYSICS_PROCESS notification in GodotObject._notification.
Called during the processing step of the main loop. Processing happens at every frame and as fast as possible, so the delta time since the previous frame is not constant. It is only called if processing is enabled, which is done automatically if this method is overridden, and can be toggled with setProcess. Corresponds to the NOTIFICATION_PROCESS notification in GodotObject._notification.
Called when the node is "ready", i.e. when both the node and its children have entered the scene tree. If the node has children, their _ready callbacks get triggered first, and the parent node will receive the ready notification afterwards. Corresponds to the NOTIFICATION_READY notification in GodotObject._notification. See also the onready keyword for variables. Usually used for initialization. For even earlier initialization, GodotObject._init may be used. Also see _enterTree.
Called when an InputEvent hasn't been consumed by _input or any GUI. The input event propagates up through the node tree until a node consumes it. It is only called if unhandled input processing is enabled, which is done automatically if this method is overridden, and can be toggled with setProcessUnhandledInput. To consume the input event and stop it propagating further to other nodes, SceneTree.setInputAsHandled can be called. For gameplay input, this and _unhandledKeyInput are usually a better fit than _input as they allow the GUI to intercept the events first.
Called when an InputEventKey hasn't been consumed by _input or any GUI. The input event propagates up through the node tree until a node consumes it. It is only called if unhandled key input processing is enabled, which is done automatically if this method is overridden, and can be toggled with setProcessUnhandledKeyInput. To consume the input event and stop it propagating further to other nodes, SceneTree.setInputAsHandled can be called. For gameplay input, this and _unhandledInput are usually a better fit than _input as they allow the GUI to intercept the events first.
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. Setting "legible_unique_name" true creates child nodes with human-readable names, based on the name of the node being instanced instead of its type.
Adds a child node. The child is placed below the given node in the list of children. Setting "legible_unique_name" true creates child nodes with human-readable names, based on the name of the node being instanced instead of its type.
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.
Returns true if the node can process while the scene tree is paused (see setPauseMode). Always returns true if the scene tree is not paused, and false if the node is not in the tree. FIXME: Why FAIL_COND?
Duplicates the node, returning a new node. You can fine-tune the behavior using the flags. See DUPLICATE_* constants.
Finds a descendant of this node whose name matches mask as in String.match (i.e. case sensitive, but '*' matches zero or more characters and '?' matches any single character except '.'). Note that it does not match against the full path, just against individual node names. If owned is true, this method only finds nodes whose owner is this node. This is especially important for scenes instantiated through script, because those scenes don't have an owner.
Finds the first parent of the current node whose name matches mask as in String.match (i.e. case sensitive, but '*' matches zero or more characters and '?' matches any single character except '.'). Note that it does not match against the full path, just against individual node names.
Returns a child node by its index (see getChildCount). This method is often used for iterating all children of a node. To access a child node via its name, use getNode.
Returns the number of child nodes.
Returns an array of references to node's children.
Returns an array listing the groups that the node is a member of.
Returns the node's index, i.e. its position among the siblings of its parent.
Returns the peer ID of the network master for this node. See setNetworkMaster.
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, a null instance is returned and attempts to access it will result in an "Attempt to call <method> on a null instance." error. Note: Fetching absolute paths only works when the node is inside the scene tree (see isInsideTree). Example: Assume your current node is Character and the following tree:
Returns the parent node of the current node, or an empty Node if the node lacks a parent.
Returns the absolute path of the current node. This only works if the current node is inside the scene tree (see isInsideTree).
Returns the relative NodePath from this node to the specified node. Both nodes must be in the same scene or the function will fail.
Returns the time elapsed since the last physics-bound frame (see _physicsProcess). This is always a constant value in physics processing unless the frames per second is changed in OS.
Returns the node's order in the scene tree branch. For example, if called on the first child node the position is 0.
Returns the time elapsed (in seconds) since the last process callback. This value may vary from frame to frame.
Returns true if this is an instance load placeholder. See InstancePlaceholder.
Returns the SceneTree that contains this node.
Returns the node's Viewport.
Returns true if the node that the NodePath points to exists.
Returns true if the given node is a direct or indirect child of the current node.
Returns true if the node is folded (collapsed) in the Scene dock.
Returns true if the given node occurs later in the scene hierarchy than the current node.
Returns true if this node is in the specified group. See notes in the description, and the group methods in SceneTree.
Returns true if this node is currently inside a SceneTree.
Returns true if the local system is the master of this node.
Returns true if physics processing is enabled (see setPhysicsProcess).
Returns true if internal physics processing is enabled (see setPhysicsProcessInternal).
Returns true if processing is enabled (see setProcess).
Returns true if the node is processing input (see setProcessInput).
Returns true if internal processing is enabled (see setProcessInternal).
Returns true if the node is processing unhandled input (see setProcessUnhandledInput).
Returns true if the node is processing unhandled key input (see setProcessUnhandledKeyInput).
Moves a child node to a different position (order) amongst the other children. Since calls, signals, etc are performed by tree order, changing the order of children nodes may be useful.
Prints all stray nodes (nodes outside the SceneTree). Used for debugging. Works only in debug builds.
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 function. Example output:
Similar to printTree, this prints the tree to stdout. This version displays a more graphical representation similar to what is displayed in the scene inspector. It is useful for inspecting larger trees. Example output:
Calls the given method (if present) with the arguments given in args on this node and recursively on all its children. If the parent_first argument is true then the method will be called on the current node first, then on all children. If it is false then the children will be called first.
Notifies the current node and all its children recursively by calling notification() on all of them.
Queues a node for deletion at the end of the current frame. When deleted, all of its child nodes will be deleted as well. This method ensures it's safe to delete the node, contrary to GodotObject.free. Use GodotObject.isQueuedForDeletion to check whether a node will be deleted at the end of the frame.
Moves this node to the top of the array of nodes of the parent node. This is often useful in GUIs (Control nodes), because their order of drawing depends on their order in the tree.
Removes a node and sets all its children as children of the parent node (if it exists). All event subscriptions that pass by the removed node will be unsubscribed.
Removes a child node. The node is NOT deleted and must be deleted manually.
Removes a node from a group. See notes in the description, and the group methods in SceneTree.
Replaces a node in a scene by the given one. Subscriptions that pass through this node will be lost.
Requests that _ready be called again.
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. Behaviour depends on the RPC configuration for the given method, see rpcConfig. Methods are not exposed to RPCs by default. Also see rset and rsetConfig for properties. Returns an empty Variant. Note that you can only safely use RPCs on clients after you received the connected_to_server signal from the SceneTree. You also need to keep track of the connection state, either by the SceneTree signals like server_disconnected or by checking SceneTree.network_peer.get_connection_status() == CONNECTION_CONNECTED.
Changes the RPC mode for the given method to the given mode. See MultiplayerAPI.rpcmode. An alternative is annotating methods and properties with the corresponding keywords (remote, master, puppet, remotesync, mastersync, puppetsync). By default, methods are not exposed to networking (and RPCs). Also see rset and rsetConfig for properties.
Sends a rpc to a specific peer identified by peer_id (see NetworkedMultiplayerPeer.setTargetPeer). Returns an empty Variant.
Sends a rpc using an unreliable protocol. Returns an empty Variant.
Sends a rpc to a specific peer identified by peer_id using an unreliable protocol (see NetworkedMultiplayerPeer.setTargetPeer). Returns an empty Variant.
Remotely changes a property's value on other peers (and locally). Behaviour depends on the RPC configuration for the given property, see rsetConfig. Also see rpc for RPCs for methods, most information applies to this method as well.
Changes the RPC mode for the given property to the given mode. See MultiplayerAPI.rpcmode. An alternative is annotating methods and properties with the corresponding keywords (remote, master, puppet, remotesync, mastersync, puppetsync). By default, properties are not exposed to networking (and RPCs). Also see rpc and rpcConfig for methods.
Remotely changes the property's value on a specific peer identified by peer_id (see NetworkedMultiplayerPeer.setTargetPeer).
Remotely changes the property's value on other peers (and locally) using an unreliable protocol.
Remotely changes property's value on a specific peer identified by peer_id using an unreliable protocol (see NetworkedMultiplayerPeer.setTargetPeer).
Sets the folded state of the node in the Scene dock.
Sets the node's network master to the peer with the given peer ID. The network master is the peer that has authority over the node on the network. Useful in conjunction with the master and puppet keywords. Inherited from the parent node by default, which ultimately defaults to peer ID 1 (the server). If recursive, the given peer is recursively set as the master for all children of this node.
Enables or disables physics (i.e. fixed framerate) processing. When a node is being processed, it will receive a NOTIFICATION_PHYSICS_PROCESS at a fixed (usually 60 fps, see OS to change) interval (and the _physicsProcess callback will be called if exists). Enabled automatically if _physicsProcess is overridden. Any calls to this before _ready will be ignored.
Enables or disables internal physics for this node. Internal physics processing happens in isolation from the normal _physicsProcess 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). Only useful for advanced uses to manipulate built-in nodes behaviour.
Enables or disabled internal processing for this node. Internal processing happens in isolation from the normal _process 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). Only useful for advanced uses to manipulate built-in nodes behaviour.
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 is overridden. Any calls to this before _ready will be ignored.
Enables unhandled key input processing. Enabled automatically if _unhandledKeyInput is overridden. Any calls to this before _ready will be ignored.
Sets whether this is an instance load placeholder. See InstancePlaceholder.
The override to the default MultiplayerAPI. Set to null to use the default SceneTree one.
When a scene is instanced from a file, its topmost node contains the filename from which it was loaded.
The MultiplayerAPI instance associated with this node. Either the customMultiplayer, or the default SceneTree one (if inside tree).
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
The node owner. A node can have any other node as owner (as long as it is a valid parent, grandparent, etc. ascending in the tree). When saving a node (using PackedScene) all the nodes it owns will be saved with it. This allows for the creation of complex SceneTrees, with instancing and subinstancing.
Pause mode. How the node will behave if the SceneTree is paused.
Base class for all scene objects.
Nodes are Godot's building blocks. They can be assigned as the child of another node, resulting in a tree arrangement. A given node can contain any number of nodes as children with the requirement that all siblings (direct children of a node) should have unique names. A tree of nodes is called a scene. Scenes can be saved to the disk and then instanced into other scenes. This allows for very high flexibility in the architecture and data model of Godot projects. Scene tree: The SceneTree contains the active tree of nodes. When a node is added to the scene tree, it receives the NOTIFICATION_ENTER_TREE notification and its _enterTree callback is triggered. Child nodes are always added after their parent node, i.e. the _enterTree callback of a parent node will be triggered before its child's. Once all nodes have been added in the scene tree, they receive the NOTIFICATION_READY notification and their respective _ready callbacks are triggered. For groups of nodes, the _ready callback is called in reverse order, starting with the children and moving up to the parent nodes. This means that when adding a node to the scene tree, the following order will be used for the callbacks: _enterTree of the parent, _enterTree of the children, _ready of the children and finally _ready of the parent (recursively for the entire scene tree). Processing: Nodes can override the "process" state, so that they receive a callback on each frame requesting them to process (do something). Normal processing (callback _process, toggled with setProcess) happens as fast as possible and is dependent on the frame rate, so the processing time delta is passed as an argument. Physics processing (callback _physicsProcess, toggled with setPhysicsProcess) happens a fixed number of times per second (60 by default) and is useful for code related to the physics engine. Nodes can also process input events. When present, the _input function will be called for each input that the program receives. In many cases, this can be overkill (unless used for simple projects), and the _unhandledInput function might be preferred; it is called when the input event was not handled by anyone else (typically, GUI Control nodes), ensuring that the node only receives the events that were meant for it. To keep track of the scene hierarchy (especially when instancing scenes into other scenes), an "owner" can be set for the node with setOwner. This keeps track of who instanced what. This is mostly useful when writing editors and tools, though. Finally, when a node is freed with GodotObject.free or queueFree, it will also free all its children. Groups: Nodes can be added to as many groups as you want to be easy to manage, you could create groups like "enemies" or "collectables" for example, depending on your game. See addToGroup, isInGroup and removeFromGroup. You can then retrieve all nodes in these groups, iterate them and even call methods on groups via the methods on SceneTree. Networking with nodes: After connecting to a server (or making one, see NetworkedMultiplayerENet) it is possible to use the built-in RPC (remote procedure call) system to communicate over the network. By calling rpc with a method name, it will be called locally and in all connected peers (peers = clients and the server that accepts connections). To identify which node receives the RPC call Godot will use its NodePath (make sure node names are the same on all peers). Also take a look at the high-level networking tutorial and corresponding demos.