PackedScene

继承： Resource < RefCounted < Object

An abstraction of a serialized scene.

描述

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 Node.owner property).

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

Example of loading a saved scene:

    # 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)

    // 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: Node2D (node), RigidBody2D (body) and 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.

    # 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.")

    // 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.");
        }
    }

方法

枚举

enum GenEditState:

GenEditState GEN_EDIT_STATE_DISABLED = 0

If passed to instantiate, blocks edits to the scene state.

GenEditState GEN_EDIT_STATE_INSTANCE = 1

If passed to instantiate, provides local scene resources to the local scene.

Note: Only available in editor builds.

GenEditState GEN_EDIT_STATE_MAIN = 2

If passed to 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.

GenEditState GEN_EDIT_STATE_MAIN_INHERITED = 3

It's similar to 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.

方法说明

bool can_instantiate ( ) const¹

Returns true if the scene file has nodes.

SceneState get_state ( ) const¹

Returns the SceneState representing the scene file contents.

Node instantiate ( edit_state: GenEditState = 0 ) const¹

Instantiates the scene's node hierarchy. Triggers child scene instantiation(s). Triggers a Node.NOTIFICATION_SCENE_INSTANTIATED notification on the root node.

Error pack ( path: Node )

Packs the path node, and all owned sub-nodes, into this PackedScene. Any existing data will be cleared. See Node.owner.