I'm working on a level editor, and I think the best approach would to save it as a .scn file that a user can open. Is this possible? If so, can someone explain to me how and/or where I can find some code or a project to help me in the right direction?
You can use the PackedScene and ResourceSaver classes to save a node and it's children into a .scn file.
var scene = get_node("Node")
var packed = PackedScene.new()