Add audio settings management and integrate into UI; refactor input settings handling

scripts/ui/audio_settings.gd

@@ -0,0 +1,104 @@
+extends Node
+
+@export var master_volume_slider: Slider
+@export var music_volume_slider: Slider
+@export var sfx_volume_slider: Slider
+@export var audio_settings_control: Control
+@export var mute_treshold: float = -20.0
+
+
+func _ready() -> void:
+	initialize()
+	if master_volume_slider:
+		master_volume_slider.value_changed.connect(_on_master_volume_slider_value_changed)
+	if music_volume_slider:
+		music_volume_slider.value_changed.connect(_on_music_volume_slider_value_changed)
+	if sfx_volume_slider:
+		sfx_volume_slider.value_changed.connect(_on_sfx_volume_slider_value_changed)
+
+	load_settings()
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event.is_action_pressed("ui_cancel"):
+		if UiManager.is_screen_on_top(audio_settings_control):
+			save_settings()
+			UiManager.pop_screen()
+
+
+func initialize() -> void:
+	if master_volume_slider:
+		var volume_db: float = AudioServer.get_bus_volume_db(AudioServer.get_bus_index("Master"))
+		master_volume_slider.value = volume_db
+		master_volume_slider.min_value = mute_treshold
+		master_volume_slider.max_value = 0.0
+	if music_volume_slider:
+		var music_volume_db: float = AudioServer.get_bus_volume_db(AudioServer.get_bus_index("music"))
+		music_volume_slider.value = music_volume_db
+		music_volume_slider.min_value = mute_treshold
+		music_volume_slider.max_value = 0.0
+	if sfx_volume_slider:
+		var sfx_volume_db: float = AudioServer.get_bus_volume_db(AudioServer.get_bus_index("sfx"))
+		sfx_volume_slider.value = sfx_volume_db
+		sfx_volume_slider.min_value = mute_treshold
+		sfx_volume_slider.max_value = 0.0
+
+
+func _handle_mute(bus_index: int, value: float) -> void:
+	if AudioServer:
+		if value == mute_treshold:
+			AudioServer.set_bus_mute(bus_index, true)
+		else:
+			AudioServer.set_bus_mute(bus_index, false)
+
+
+func _on_master_volume_slider_value_changed(value: float) -> void:
+	if AudioServer:
+		AudioServer.set_bus_volume_db(AudioServer.get_bus_index("Master"), value)
+		_handle_mute(AudioServer.get_bus_index("Master"), value)
+
+
+func _on_music_volume_slider_value_changed(value: float) -> void:
+	if AudioServer:
+		AudioServer.set_bus_volume_db(AudioServer.get_bus_index("music"), value)
+		_handle_mute(AudioServer.get_bus_index("music"), value)
+
+
+func _on_sfx_volume_slider_value_changed(value: float) -> void:
+	if AudioServer:
+		AudioServer.set_bus_volume_db(AudioServer.get_bus_index("sfx"), value)
+		_handle_mute(AudioServer.get_bus_index("sfx"), value)
+
+
+func save_settings() -> void:
+	if not AudioServer:
+		return
+
+	var settings_config := ConfigFileHandler.settings_config
+	settings_config.set_value("audio_settings", "master_volume", master_volume_slider.value)
+	settings_config.set_value("audio_settings", "music_volume", music_volume_slider.value)
+	settings_config.set_value("audio_settings", "sfx_volume", sfx_volume_slider.value)
+	settings_config.set_value("audio_settings", "mute_treshold", mute_treshold)
+	settings_config.save(ConfigFileHandler.SETTINGS_PATH)
+
+
+func load_settings() -> void:
+	if not AudioServer:
+		return
+
+	var settings_config := ConfigFileHandler.settings_config
+	if not settings_config.has_section("audio_settings"):
+		print("Audio settings section not found in config file.")
+		return
+
+	var master_volume: float = settings_config.get_value("audio_settings", "master_volume", 0.0)
+	var music_volume: float  = settings_config.get_value("audio_settings", "music_volume", 0.0)
+	var sfx_volume: float    = settings_config.get_value("audio_settings", "sfx_volume", 0.0)
+
+	if master_volume_slider:
+		master_volume_slider.value = master_volume
+	if music_volume_slider:
+		music_volume_slider.value = music_volume
+	if sfx_volume_slider:
+		sfx_volume_slider.value = sfx_volume
+	mute_treshold = settings_config.get_value("audio_settings", "mute_treshold", -20.0)