mirror of
https://github.com/godotengine/godot
synced 2024-09-05 19:59:37 +00:00
202 lines
9.4 KiB
XML
202 lines
9.4 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
|
|
<class name="NodePath" version="4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
|
|
<brief_description>
|
|
Pre-parsed scene tree path.
|
|
</brief_description>
|
|
<description>
|
|
A pre-parsed relative or absolute path in a scene tree, for use with [method Node.get_node] and similar functions. It can reference a node, a resource within a node, or a property of a node or resource. For example, [code]"Path2D/PathFollow2D/Sprite2D:texture:size"[/code] would refer to the [code]size[/code] property of the [code]texture[/code] resource on the node named [code]"Sprite2D"[/code] which is a child of the other named nodes in the path.
|
|
You will usually just pass a string to [method Node.get_node] and it will be automatically converted, but you may occasionally want to parse a path ahead of time with [NodePath] or the literal syntax [code]^"path"[/code]. Exporting a [NodePath] variable will give you a node selection widget in the properties panel of the editor, which can often be useful.
|
|
A [NodePath] is composed of a list of slash-separated node names (like a filesystem path) and an optional colon-separated list of "subnames" which can be resources or properties.
|
|
Some examples of NodePaths include the following:
|
|
[codeblock]
|
|
# No leading slash means it is relative to the current node.
|
|
^"A" # Immediate child A
|
|
^"A/B" # A's child B
|
|
^"." # The current node.
|
|
^".." # The parent node.
|
|
^"../C" # A sibling node C.
|
|
# A leading slash means it is absolute from the SceneTree.
|
|
^"/root" # Equivalent to get_tree().get_root().
|
|
^"/root/Main" # If your main scene's root node were named "Main".
|
|
^"/root/MyAutoload" # If you have an autoloaded node or scene.
|
|
[/codeblock]
|
|
See also [StringName], which is a similar concept for general-purpose string interning.
|
|
[b]Note:[/b] In the editor, [NodePath] properties are automatically updated when moving, renaming or deleting a node in the scene tree, but they are never updated at runtime.
|
|
</description>
|
|
<tutorials>
|
|
<link title="2D Role Playing Game Demo">https://godotengine.org/asset-library/asset/520</link>
|
|
</tutorials>
|
|
<constructors>
|
|
<constructor name="NodePath">
|
|
<return type="NodePath" />
|
|
<description>
|
|
Constructs an empty [NodePath].
|
|
</description>
|
|
</constructor>
|
|
<constructor name="NodePath">
|
|
<return type="NodePath" />
|
|
<param index="0" name="from" type="NodePath" />
|
|
<description>
|
|
Constructs a [NodePath] as a copy of the given [NodePath]. [code]NodePath("example")[/code] is equivalent to [code]^"example"[/code].
|
|
</description>
|
|
</constructor>
|
|
<constructor name="NodePath">
|
|
<return type="NodePath" />
|
|
<param index="0" name="from" type="String" />
|
|
<description>
|
|
Creates a NodePath from a string, e.g. [code]"Path2D/PathFollow2D/Sprite2D:texture:size"[/code]. A path is absolute if it starts with a slash. Absolute paths are only valid in the global scene tree, not within individual scenes. In a relative path, [code]"."[/code] and [code]".."[/code] indicate the current node and its parent.
|
|
The "subnames" optionally included after the path to the target node can point to resources or properties, and can also be nested.
|
|
Examples of valid NodePaths (assuming that those nodes exist and have the referenced resources or properties):
|
|
[codeblock]
|
|
# Points to the Sprite2D node.
|
|
"Path2D/PathFollow2D/Sprite2D"
|
|
# Points to the Sprite2D node and its "texture" resource.
|
|
# get_node() would retrieve "Sprite2D", while get_node_and_resource()
|
|
# would retrieve both the Sprite2D node and the "texture" resource.
|
|
"Path2D/PathFollow2D/Sprite2D:texture"
|
|
# Points to the Sprite2D node and its "position" property.
|
|
"Path2D/PathFollow2D/Sprite2D:position"
|
|
# Points to the Sprite2D node and the "x" component of its "position" property.
|
|
"Path2D/PathFollow2D/Sprite2D:position:x"
|
|
# Absolute path (from "root")
|
|
"/root/Level/Path2D"
|
|
[/codeblock]
|
|
</description>
|
|
</constructor>
|
|
</constructors>
|
|
<methods>
|
|
<method name="get_as_property_path" qualifiers="const">
|
|
<return type="NodePath" />
|
|
<description>
|
|
Returns a node path with a colon character ([code]:[/code]) prepended, transforming it to a pure property path with no node name (defaults to resolving from the current node).
|
|
[codeblocks]
|
|
[gdscript]
|
|
# This will be parsed as a node path to the "x" property in the "position" node.
|
|
var node_path = NodePath("position:x")
|
|
# This will be parsed as a node path to the "x" component of the "position" property in the current node.
|
|
var property_path = node_path.get_as_property_path()
|
|
print(property_path) # :position:x
|
|
[/gdscript]
|
|
[csharp]
|
|
// This will be parsed as a node path to the "x" property in the "position" node.
|
|
var nodePath = new NodePath("position:x");
|
|
// This will be parsed as a node path to the "x" component of the "position" property in the current node.
|
|
NodePath propertyPath = nodePath.GetAsPropertyPath();
|
|
GD.Print(propertyPath); // :position:x
|
|
[/csharp]
|
|
[/codeblocks]
|
|
</description>
|
|
</method>
|
|
<method name="get_concatenated_names" qualifiers="const">
|
|
<return type="StringName" />
|
|
<description>
|
|
Returns all paths concatenated with a slash character ([code]/[/code]) as separator without subnames.
|
|
</description>
|
|
</method>
|
|
<method name="get_concatenated_subnames" qualifiers="const">
|
|
<return type="StringName" />
|
|
<description>
|
|
Returns all subnames concatenated with a colon character ([code]:[/code]) as separator, i.e. the right side of the first colon in a node path.
|
|
[codeblocks]
|
|
[gdscript]
|
|
var nodepath = NodePath("Path2D/PathFollow2D/Sprite2D:texture:load_path")
|
|
print(nodepath.get_concatenated_subnames()) # texture:load_path
|
|
[/gdscript]
|
|
[csharp]
|
|
var nodepath = new NodePath("Path2D/PathFollow2D/Sprite2D:texture:load_path");
|
|
GD.Print(nodepath.GetConcatenatedSubnames()); // texture:load_path
|
|
[/csharp]
|
|
[/codeblocks]
|
|
</description>
|
|
</method>
|
|
<method name="get_name" qualifiers="const">
|
|
<return type="StringName" />
|
|
<param index="0" name="idx" type="int" />
|
|
<description>
|
|
Gets the node name indicated by [param idx] (0 to [method get_name_count] - 1).
|
|
[codeblocks]
|
|
[gdscript]
|
|
var node_path = NodePath("Path2D/PathFollow2D/Sprite2D")
|
|
print(node_path.get_name(0)) # Path2D
|
|
print(node_path.get_name(1)) # PathFollow2D
|
|
print(node_path.get_name(2)) # Sprite
|
|
[/gdscript]
|
|
[csharp]
|
|
var nodePath = new NodePath("Path2D/PathFollow2D/Sprite2D");
|
|
GD.Print(nodePath.GetName(0)); // Path2D
|
|
GD.Print(nodePath.GetName(1)); // PathFollow2D
|
|
GD.Print(nodePath.GetName(2)); // Sprite
|
|
[/csharp]
|
|
[/codeblocks]
|
|
</description>
|
|
</method>
|
|
<method name="get_name_count" qualifiers="const">
|
|
<return type="int" />
|
|
<description>
|
|
Gets the number of node names which make up the path. Subnames (see [method get_subname_count]) are not included.
|
|
For example, [code]"Path2D/PathFollow2D/Sprite2D"[/code] has 3 names.
|
|
</description>
|
|
</method>
|
|
<method name="get_subname" qualifiers="const">
|
|
<return type="StringName" />
|
|
<param index="0" name="idx" type="int" />
|
|
<description>
|
|
Gets the resource or property name indicated by [param idx] (0 to [method get_subname_count]).
|
|
[codeblocks]
|
|
[gdscript]
|
|
var node_path = NodePath("Path2D/PathFollow2D/Sprite2D:texture:load_path")
|
|
print(node_path.get_subname(0)) # texture
|
|
print(node_path.get_subname(1)) # load_path
|
|
[/gdscript]
|
|
[csharp]
|
|
var nodePath = new NodePath("Path2D/PathFollow2D/Sprite2D:texture:load_path");
|
|
GD.Print(nodePath.GetSubname(0)); // texture
|
|
GD.Print(nodePath.GetSubname(1)); // load_path
|
|
[/csharp]
|
|
[/codeblocks]
|
|
</description>
|
|
</method>
|
|
<method name="get_subname_count" qualifiers="const">
|
|
<return type="int" />
|
|
<description>
|
|
Gets the number of resource or property names ("subnames") in the path. Each subname is listed after a colon character ([code]:[/code]) in the node path.
|
|
For example, [code]"Path2D/PathFollow2D/Sprite2D:texture:load_path"[/code] has 2 subnames.
|
|
</description>
|
|
</method>
|
|
<method name="hash" qualifiers="const">
|
|
<return type="int" />
|
|
<description>
|
|
Returns the 32-bit hash value representing the [NodePath]'s contents.
|
|
</description>
|
|
</method>
|
|
<method name="is_absolute" qualifiers="const">
|
|
<return type="bool" />
|
|
<description>
|
|
Returns [code]true[/code] if the node path is absolute (as opposed to relative), which means that it starts with a slash character ([code]/[/code]). Absolute node paths can be used to access the root node ([code]"/root"[/code]) or autoloads (e.g. [code]"/global"[/code] if a "global" autoload was registered).
|
|
</description>
|
|
</method>
|
|
<method name="is_empty" qualifiers="const">
|
|
<return type="bool" />
|
|
<description>
|
|
Returns [code]true[/code] if the node path is empty.
|
|
</description>
|
|
</method>
|
|
</methods>
|
|
<operators>
|
|
<operator name="operator !=">
|
|
<return type="bool" />
|
|
<param index="0" name="right" type="NodePath" />
|
|
<description>
|
|
Returns [code]true[/code] if two node paths are not equal.
|
|
</description>
|
|
</operator>
|
|
<operator name="operator ==">
|
|
<return type="bool" />
|
|
<param index="0" name="right" type="NodePath" />
|
|
<description>
|
|
Returns [code]true[/code] if two node paths are equal, i.e. all node names in the path are the same and in the same order.
|
|
</description>
|
|
</operator>
|
|
</operators>
|
|
</class>
|