DLC loading in Godot (GDscript 3)

DlcContent.gd

extends Node

### A buncha DLC stuff that's not easy without reflection
var custom_levels = {} # W1L2 => load(...)

TitleScene.gd

func _load_dlcs():
	# maybe add some DLCs later.
	if CoreFeatures.load_dlcs:
		
		# TODO: replace with a fetch of files from disk
		var known_dlcs = {"Origins": "Origins/Origins.pck"}
		for dlc_name in known_dlcs.keys():
			var dlc = known_dlcs[dlc_name]
			var full_path = "res://DLCs/%s" % dlc
			
			if File.new().file_exists(full_path):
				var is_successful = ProjectSettings.load_resource_pack(full_path)
				var status_message = "Loaded" if is_successful else "Failed to load"
				print("%s %s DLC from %s" % [status_message, dlc_name, full_path])
				_dlcs_label.text += "%s DLC\n" % dlc_name
				
				# This sucks. Lack of reflection sucks. IDK how else to do this without brute-forcing.
				# Figures out what levels are in the DLC packs, and saves instances in a dictionray.
				var base_level_path = "res://DLCs/%s/Levels/" % dlc_name
				for world_number in range(1, 10):
					for level_number in range(1, 10):
						var level_id = "W%sL%s" % [world_number, level_number]
						var level_path = "%s/%s.tscn" % [base_level_path, level_id]
						if ResourceLoader.exists(level_path):
							print("Loading %s from %s" % [dlc_name, level_id])
							# Overrides other DLCs, core levels, etc.
							DlcContent.custom_levels[level_id] = load(level_path)