Preloading a scene creates a cyclic reference?

Help Programming
,
1

Godot Version

4.2.2

Question

I have a scene that has a script that references another script (core.gd). In core.gd, I want to be able to spawn the other scene, so I preload it. Now if I restart the editor, I get a scene missing/corrupted error with no way of fixing it (At least not in Godot. Had to do it with notepad.). I dont understand how I can avoid this in the future because it happened multiple times over multiple Godot versions and multiple projects.
Here are my scripts simplified…

core.gd

extends Node
class_name Core

const RUC_SCENE: PackedScene = preload(
    "res://scenes/roller_upgrades_container/roller_upgrades_container.tscn"
)


func switch_to_structure(id: int, is_static_structure: bool) -> void:
    var roller_data: Roller = rollers_data[id]
    
    if %BottomContainer.get_child_count() == 0:
        var ruc_instance := RUC_SCENE.instantiate() as RollerUpgradesContainer
        %BottomContainer.add_child(ruc_instance)
        ruc_instance.setup(roller_data)

roller_upgrades_container.gd

extends GridContainer
class_name RollerUpgradesContainer

@onready var core := get_tree().get_first_node_in_group(&"core") as Core

var roller_data: Roller = null

func setup(data: Roller) -> void:
    roller_data = data
    update_visuals()

Any help is appreciated!

2

The documentation says here Logic preferences — Godot Engine (stable) documentation in English that when you combine const and preload, it will “spawn” the preloaded scene. Since your RollerUpgradesContainer has an onready var that references Core, it might be that the “Core” class does not exist yet when the RollerUpgradesContainer is preloaded.

You can try to change const to var and see if that solves it.

3

This sadly didnt fix it