refactor

scenes/menu/options_menu.gd

@@ -0,0 +1,49 @@
+extends Control
+
+const SETTINGS_PATH: String = "user://settings.cfg"
+
+@onready var master: HSlider = %MasterSlider
+@onready var music: HSlider = %MusicSlider
+@onready var sfx: HSlider = %SfxSlider
+@onready var sens: HSlider = %SensSlider
+
+func _ready() -> void:
+  load_settings()
+  master.value_changed.connect(_on_master_changed)
+  music.value_changed.connect(_on_music_changed)
+  sfx.value_changed.connect(_on_sfx_changed)
+
+func load_settings() -> void:
+  var cfg := ConfigFile.new()
+  if cfg.load(SETTINGS_PATH) == OK:
+    master.value = cfg.get_value("audio", "master", 1.0)
+    music.value = cfg.get_value("audio", "music", 1.0)
+    sfx.value = cfg.get_value("audio", "sfx", 1.0)
+    sens.value = cfg.get_value("input", "sens", 1.0)
+  _apply_audio()
+
+func save_settings() -> void:
+  var cfg := ConfigFile.new()
+  cfg.set_value("audio", "master", master.value)
+  cfg.set_value("audio", "music", music.value)
+  cfg.set_value("audio", "sfx", sfx.value)
+  cfg.set_value("input", "sens", sens.value)
+  cfg.save(SETTINGS_PATH)
+
+func _on_master_changed(_v: float) -> void:
+  _apply_audio()
+  save_settings()
+
+func _on_music_changed(_v: float) -> void:
+  _apply_audio()
+  save_settings()
+
+func _on_sfx_changed(_v: float) -> void:
+  _apply_audio()
+  save_settings()
+
+func _apply_audio() -> void:
+  AudioServer.set_bus_volume_db(0, linear_to_db(max(0.001, master.value)))
+
+func _on_back_pressed() -> void:
+  GameState.change_scene(GameState.SCENE_MAIN_MENU)