Godot glTF import script: extra root node fix (reparent/remove)

gltf_import_fix.gd

@tool
extends EditorScenePostImport

func _post_import(scene):
	var fake_root = scene.get_child(0) # glTF's root "scene" node

	# Remove the wrongly imported fake root node
	reparent_children(fake_root, scene)
	fake_root.queue_free()

	# Rename "Node" based on the file name
	scene.name = basename().replace("-", "_").to_pascal_case()

	return scene

func reparent_children(node, new_parent):
	for child in node.get_children():
		reparent(child, new_parent)

func reparent(node, new_parent):
	var old_parent = node.get_parent()

	node.owner = null
	old_parent.remove_child(node)

	new_parent.add_child(node)
	node.owner = new_parent

func basename():
	return get_source_file().get_file().get_basename()