Move all .tscn and .gd files into scenes/ directory

scenes/levels.gd

@@ -0,0 +1,44 @@
+extends Node
+
+var chapters
+
+func _ready():
+	reload()
+	
+func reload():
+	chapters = []
+	
+	var dir = Directory.new()
+	dir.open("res://levels")
+	dir.list_dir_begin()
+
+	var chapter_names = []
+	
+	while true:
+		var file = dir.get_next()
+		if file == "":
+			break
+		elif not file.begins_with(".") and file != "sequence":
+			chapter_names.append(file)
+
+	dir.list_dir_end()
+	chapter_names.sort()
+	
+	var final_chapter_sequence = []
+	
+	var chapter_sequence = Array(helpers.read_file("res://levels/sequence", "").split("\n"))
+	
+	for chapter in chapter_sequence:
+		if chapter == "":
+			continue
+		if not chapter_names.has(chapter):
+			helpers.crash("Chapter '%s' is specified in the sequence, but could not be found" % chapter)
+		chapter_names.erase(chapter)
+		final_chapter_sequence.push_back(chapter)
+	
+	final_chapter_sequence += chapter_names
+	
+	for c in final_chapter_sequence:
+		var chapter = Chapter.new()
+		chapter.load("res://levels/%s" % c)
+		chapters.push_back(chapter)