godot-docs/classes/class_packedscene.rst

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.. DO NOT EDIT THIS FILE!!!
.. Generated automatically from Godot engine sources.
.. Generator: https://github.com/godotengine/godot/tree/master/doc/tools/make_rst.py.
.. XML source: https://github.com/godotengine/godot/tree/master/doc/classes/PackedScene.xml.

.. _class_PackedScene:

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

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

An abstraction of a serialized scene.

.. rst-class:: classref-introduction-group

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:** Load 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:** Save a node with different owners. The following example creates 3 objects: :ref:`Node2D<class_Node2D>` (``node``), :ref:`RigidBody2D<class_RigidBody2D>` (``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 :ref:`pack<class_PackedScene_method_pack>` will therefore only save those two nodes, but not ``collision``.


.. tabs::

 .. code-tab:: gdscript

    # Create the objects.
    var node = Node2D.new()
    var body = RigidBody2D.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(scene, "res://path/name.tscn")  # 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 RigidBody2D();
    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(scene, "res://path/name.tscn"); // Or "user://..."
        if (error != Error.Ok)
        {
            GD.PushError("An error occurred while saving the scene to disk.");
        }
    }



.. rst-class:: classref-introduction-group

Tutorials
---------

- `2D Role Playing Game (RPG) Demo <https://godotengine.org/asset-library/asset/2729>`__

.. rst-class:: classref-reftable-group

Methods
-------

.. table::
   :widths: auto

   +---------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :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>`\ (\ edit_state\: :ref:`GenEditState<enum_PackedScene_GenEditState>` = 0\ ) |const| |
   +---------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+
   | :ref:`Error<enum_@GlobalScope_Error>` | :ref:`pack<class_PackedScene_method_pack>`\ (\ path\: :ref:`Node<class_Node>`\ )                                                            |
   +---------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------+

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

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

.. _enum_PackedScene_GenEditState:

.. rst-class:: classref-enumeration

enum **GenEditState**: :ref:`🔗<enum_PackedScene_GenEditState>`

.. _class_PackedScene_constant_GEN_EDIT_STATE_DISABLED:

.. rst-class:: classref-enumeration-constant

:ref:`GenEditState<enum_PackedScene_GenEditState>` **GEN_EDIT_STATE_DISABLED** = ``0``

If passed to :ref:`instantiate<class_PackedScene_method_instantiate>`, blocks edits to the scene state.

.. _class_PackedScene_constant_GEN_EDIT_STATE_INSTANCE:

.. rst-class:: classref-enumeration-constant

:ref:`GenEditState<enum_PackedScene_GenEditState>` **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.

.. _class_PackedScene_constant_GEN_EDIT_STATE_MAIN:

.. rst-class:: classref-enumeration-constant

:ref:`GenEditState<enum_PackedScene_GenEditState>` **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.

.. _class_PackedScene_constant_GEN_EDIT_STATE_MAIN_INHERITED:

.. rst-class:: classref-enumeration-constant

:ref:`GenEditState<enum_PackedScene_GenEditState>` **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.

.. rst-class:: classref-section-separator

----

.. rst-class:: classref-descriptions-group

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

.. _class_PackedScene_method_can_instantiate:

.. rst-class:: classref-method

:ref:`bool<class_bool>` **can_instantiate**\ (\ ) |const| :ref:`🔗<class_PackedScene_method_can_instantiate>`

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

.. rst-class:: classref-item-separator

----

.. _class_PackedScene_method_get_state:

.. rst-class:: classref-method

:ref:`SceneState<class_SceneState>` **get_state**\ (\ ) |const| :ref:`🔗<class_PackedScene_method_get_state>`

Returns the :ref:`SceneState<class_SceneState>` representing the scene file contents.

.. rst-class:: classref-item-separator

----

.. _class_PackedScene_method_instantiate:

.. rst-class:: classref-method

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

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

.. rst-class:: classref-item-separator

----

.. _class_PackedScene_method_pack:

.. rst-class:: classref-method

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

Packs the ``path`` node, and all owned sub-nodes, into this **PackedScene**. Any existing data will be cleared. 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.)`
.. |bitfield| replace:: :abbr:`BitField (This value is an integer composed as a bitmask of the following flags.)`
.. |void| replace:: :abbr:`void (No return value.)`