did a lot of stuff holy shit

scripts/autoloads/level_manager.gd

@@ -0,0 +1,26 @@
+extends Node
+
+@onready var transition: CanvasLayer = $Transition
+
+@export var levels: Array[PackedScene]
+var level_pointer: int = 0
+
+const PROGRESS_SAVE_PATH: String = "user://save.cfg"
+var progress_save: ConfigFile = ConfigFile.new()
+
+func  _ready() -> void:
+	progress_save.load(PROGRESS_SAVE_PATH)
+
+func next_level() -> void:
+	level_pointer += 1
+	if level_pointer < levels.size():
+		transition.show()
+		await get_tree().create_timer(1).timeout
+		get_tree().change_scene_to_packed(levels[level_pointer])
+		await get_tree().create_timer(2).timeout
+		transition.hide()
+	else:
+		get_tree().change_scene_to_file("res://scenes/gui/menus/game_finished.tscn")
+
+func start_last_level() -> void:
+	pass

scripts/autoloads/window_manager.gd

@@ -7,14 +7,14 @@ var fullscreen: bool
 
 func _ready() -> void:
 	process_mode = Node.PROCESS_MODE_ALWAYS
-	close_request_window = preload("res://scenes/close_game_confirmation.tscn").instantiate()
+	close_request_window = preload("res://scenes/gui/menus/close_game_confirmation.tscn").instantiate()
 	add_child(close_request_window)
 	pause_menu = preload("res://scenes/gui/menus/pause_menu.tscn").instantiate()
 	add_child(pause_menu)
 	
 	fullscreen = DisplayServer.window_get_mode() == 4
 
-func _process(delta: float) -> void:
+func _process(_delta: float) -> void:
 	if Input.is_action_just_released("fullscreen"):
 		fullscreen = !fullscreen
 		toggle_fullscreen()