A Scene Manager for Godot Engine.
Looking for a Godot 3.5 version? See godot 3.5 branch.

A manager whose task is to change scenes using a separate thread to load the new scene.

➡️ open the SceneManager scene and select the file path to the main scene file for the exported variable _main_scene_filepath. This file path will be used to load the main scene during the testing of the scene launched using F6. The main scene will act as a switch between levels. As a requiment, main scene must have Node child named ActiveSceneContainer

➡️ in order to know wheter scene finished loading/unloading, connect coresponding signals. Ex:

SceneManager.manager_scene_loaded.connect(_on_scene_ready)
SceneManager.manager_scene_unloaded.connect(_on_scene_gone)

➡️ if you want to be informed about state of background loading, connect signal update_progress. Ex:

SceneManager.update_progress.connect(loading_screen._on_progress_changed)

➡️ to change scene, call change_scene(scene_filepath: String, scene_params: Dictionary = {}) Ex:

SceneManager.change_scene("res://work/src/scenes/main_scenes/scene_1.tscn", {"difficulty": "easy"})