particles/Main.tscn

[gd_scene load_steps=4 format=2]

[ext_resource path="res://MainMenu/MainMenu.tscn" type="PackedScene" id=1]
[ext_resource path="res://MainMenu/MenuBackground.cs" type="Script" id=2]

[sub_resource type="CSharpScript" id=1]
resource_name = "Main"
script/source = "using Godot;
using System;

public class Main : Node
{
    // Declare member variables here. Examples:
    // private int a = 2;
    // private string b = \"text\";

    // Called when the node enters the scene tree for the first time.
    public override void _Ready()
    {
        
    }

//  // Called every frame. 'delta' is the elapsed time since the previous frame.
//  public override void _Process(float delta)
//  {
//      
//  }
}
"

[node name="Main" type="Node"]
script = SubResource( 1 )

[node name="MainMenu" parent="." instance=ExtResource( 1 )]

[node name="MenuBackground" type="Node2D" parent="."]
script = ExtResource( 2 )

[node name="ParticleNodes" type="Node2D" parent="MenuBackground"]