Copying entire scene tree to a variable

[lofty valley]

How to copy scene tree to a variable, so a class that doesn't inherit Node can use GetNode<T>() and run stuff from nodes? When I tried, Godot sets variable to node without children.

[heavy pumice]

Just
SceneTree tree_reference = some_node.GetTree()

[lofty valley]

also tried that

Godot sets variable to node without children.

[heavy pumice]

The SceneTree is not the actual owner of the nodes, that would the Root of the tree.

But i don't really understand what is your goal here.

What did you mean with this exactly?
"Godot sets variable to node without children."

[lofty valley]

variable is set to node, yes, but Children property is empty

[lofty valley]

i have a scripting language in my game that needs to access nodes in current scene

[heavy pumice]

There's only 2 reasons as to why it would have no children. Either the scene is empty at the time where you're checking (too early or during a scene change) OR the PackedScene loaded is simply empty.

[lofty valley]

fragment of code that assigns CurrentLevel to scene tree runs on _ready

reading the documentation it should work, because _ready runs when node and its children are ready

code that assigns is on topmost node

[heavy pumice]

If it is running in an Autoload, those are ready before the scene even loads.

[lofty valley]

it's running in root node

public override void _Ready()
{
[...]
        //initalize evil scripting language and run ready function
        _scriptvm = new GodotVM() { CurrentLevel = GetTree() };
[...]
}```

GodotVM is

public class GodotVM : CeresVM
{
    public SceneTree CurrentLevel { get; set; }
}```
CeresVM is virtual machine of scripting language i'm using

when I try to access CurrentLevel from class that inherits from Node, it works

when accessing the same variable from class that doesn't inherit Node it doesn't

found my solution