godot-docs/classes/class_packedscene.rst

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.. Generated automatically by doc/tools/make_rst.py in Godot's source tree.
.. DO NOT EDIT THIS FILE, but the PackedScene.xml source instead.
.. The source is found in doc/classes or modules/<name>/doc_classes.

.. _class_PackedScene:

PackedScene
===========

**Inherits:** :ref:`Resource<class_Resource>` **<** :ref:`RefCounted<class_RefCounted>` **<** :ref:`Object<class_Object>`

An abstraction of a serialized scene.

Description
-----------

A simplified interface to a scene file. Provides access to operations and checks that can be performed on the scene resource itself.

Can be used to save a node to a file. When saving, the node as well as all the nodes it owns get saved (see :ref:`Node.owner<class_Node_property_owner>` property).

\ **Note:** The node doesn't need to own itself.

\ **Example of loading a saved scene:**\ 


.. tabs::

 .. code-tab:: gdscript

    # Use load() instead of preload() if the path isn't known at compile-time.
    var scene = preload("res://scene.tscn").instantiate()
    # Add the node as a child of the node the script is attached to.
    add_child(scene)

 .. code-tab:: csharp

    // C# has no preload, so you have to always use ResourceLoader.Load<PackedScene>().
    var scene = ResourceLoader.Load<PackedScene>("res://scene.tscn").Instantiate();
    // Add the node as a child of the node the script is attached to.
    AddChild(scene);



\ **Example of saving a node with different owners:** The following example creates 3 objects: :ref:`Node2D<class_Node2D>` (``node``), :ref:`RigidDynamicBody2D<class_RigidDynamicBody2D>` (``body``) and :ref:`CollisionObject2D<class_CollisionObject2D>` (``collision``). ``collision`` is a child of ``body`` which is a child of ``node``. Only ``body`` is owned by ``node`` and ``pack`` will therefore only save those two nodes, but not ``collision``.


.. tabs::

 .. code-tab:: gdscript

    # Create the objects.
    var node = Node2D.new()
    var body = RigidDynamicBody2D.new()
    var collision = CollisionShape2D.new()
    
    # Create the object hierarchy.
    body.add_child(collision)
    node.add_child(body)
    
    # Change owner of `body`, but not of `collision`.
    body.owner = node
    var scene = PackedScene.new()
    
    # Only `node` and `body` are now packed.
    var result = scene.pack(node)
    if result == OK:
        var error = ResourceSaver.save("res://path/name.tscn", scene)  # Or "user://..."
        if error != OK:
            push_error("An error occurred while saving the scene to disk.")

 .. code-tab:: csharp

    // Create the objects.
    var node = new Node2D();
    var body = new RigidDynamicBody2D();
    var collision = new CollisionShape2D();
    
    // Create the object hierarchy.
    body.AddChild(collision);
    node.AddChild(body);
    
    // Change owner of `body`, but not of `collision`.
    body.Owner = node;
    var scene = new PackedScene();
    
    // Only `node` and `body` are now packed.
    Error result = scene.Pack(node);
    if (result == Error.Ok)
    {
        Error error = ResourceSaver.Save("res://path/name.tscn", scene); // Or "user://..."
        if (error != Error.Ok)
        {
            GD.PushError("An error occurred while saving the scene to disk.");
        }
    }



Tutorials
---------

- `2D Role Playing Game Demo <https://godotengine.org/asset-library/asset/520>`__

Properties
----------

+-------------------------------------+------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Dictionary<class_Dictionary>` | :ref:`_bundled<class_PackedScene_property__bundled>` | ``{ "conn_count": 0, "conns": PackedInt32Array(), "editable_instances": [], "names": PackedStringArray(), "node_count": 0, "node_paths": [], "nodes": PackedInt32Array(), "variants": [], "version": 2 }`` |
+-------------------------------------+------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Methods
-------

+---------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`bool<class_bool>`               | :ref:`can_instantiate<class_PackedScene_method_can_instantiate>` **(** **)** |const|                                                         |
+---------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`SceneState<class_SceneState>`   | :ref:`get_state<class_PackedScene_method_get_state>` **(** **)** |const|                                                                     |
+---------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Node<class_Node>`               | :ref:`instantiate<class_PackedScene_method_instantiate>` **(** :ref:`GenEditState<enum_PackedScene_GenEditState>` edit_state=0 **)** |const| |
+---------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------+
| :ref:`Error<enum_@GlobalScope_Error>` | :ref:`pack<class_PackedScene_method_pack>` **(** :ref:`Node<class_Node>` path **)**                                                          |
+---------------------------------------+----------------------------------------------------------------------------------------------------------------------------------------------+

Enumerations
------------

.. _enum_PackedScene_GenEditState:

.. _class_PackedScene_constant_GEN_EDIT_STATE_DISABLED:

.. _class_PackedScene_constant_GEN_EDIT_STATE_INSTANCE:

.. _class_PackedScene_constant_GEN_EDIT_STATE_MAIN:

.. _class_PackedScene_constant_GEN_EDIT_STATE_MAIN_INHERITED:

enum **GenEditState**:

- **GEN_EDIT_STATE_DISABLED** = **0** --- If passed to :ref:`instantiate<class_PackedScene_method_instantiate>`, blocks edits to the scene state.

- **GEN_EDIT_STATE_INSTANCE** = **1** --- If passed to :ref:`instantiate<class_PackedScene_method_instantiate>`, provides local scene resources to the local scene.

\ **Note:** Only available in editor builds.

- **GEN_EDIT_STATE_MAIN** = **2** --- If passed to :ref:`instantiate<class_PackedScene_method_instantiate>`, provides local scene resources to the local scene. Only the main scene should receive the main edit state.

\ **Note:** Only available in editor builds.

- **GEN_EDIT_STATE_MAIN_INHERITED** = **3** --- It's similar to :ref:`GEN_EDIT_STATE_MAIN<class_PackedScene_constant_GEN_EDIT_STATE_MAIN>`, but for the case where the scene is being instantiated to be the base of another one.

\ **Note:** Only available in editor builds.

Property Descriptions
---------------------

.. _class_PackedScene_property__bundled:

- :ref:`Dictionary<class_Dictionary>` **_bundled**

+-----------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| *Default* | ``{ "conn_count": 0, "conns": PackedInt32Array(), "editable_instances": [], "names": PackedStringArray(), "node_count": 0, "node_paths": [], "nodes": PackedInt32Array(), "variants": [], "version": 2 }`` |
+-----------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

A dictionary representation of the scene contents.

Available keys include "rnames" and "variants" for resources, "node_count", "nodes", "node_paths" for nodes, "editable_instances" for base scene children overrides, "conn_count" and "conns" for signal connections, and "version" for the format style of the PackedScene.

Method Descriptions
-------------------

.. _class_PackedScene_method_can_instantiate:

- :ref:`bool<class_bool>` **can_instantiate** **(** **)** |const|

Returns ``true`` if the scene file has nodes.

----

.. _class_PackedScene_method_get_state:

- :ref:`SceneState<class_SceneState>` **get_state** **(** **)** |const|

Returns the ``SceneState`` representing the scene file contents.

----

.. _class_PackedScene_method_instantiate:

- :ref:`Node<class_Node>` **instantiate** **(** :ref:`GenEditState<enum_PackedScene_GenEditState>` edit_state=0 **)** |const|

Instantiates the scene's node hierarchy. Triggers child scene instantiation(s). Triggers a :ref:`Node.NOTIFICATION_INSTANCED<class_Node_constant_NOTIFICATION_INSTANCED>` notification on the root node.

----

.. _class_PackedScene_method_pack:

- :ref:`Error<enum_@GlobalScope_Error>` **pack** **(** :ref:`Node<class_Node>` path **)**

Pack will ignore any sub-nodes not owned by given node. See :ref:`Node.owner<class_Node_property_owner>`.

.. |virtual| replace:: :abbr:`virtual (This method should typically be overridden by the user to have any effect.)`
.. |const| replace:: :abbr:`const (This method has no side effects. It doesn't modify any of the instance's member variables.)`
.. |vararg| replace:: :abbr:`vararg (This method accepts any number of arguments after the ones described here.)`
.. |constructor| replace:: :abbr:`constructor (This method is used to construct a type.)`
.. |static| replace:: :abbr:`static (This method doesn't need an instance to be called, so it can be called directly using the class name.)`
.. |operator| replace:: :abbr:`operator (This method describes a valid operator to use with this type as left-hand operand.)`