Adding basic functions to handle music volume with a config file to save user preferences

project.godot

@@ -17,6 +17,7 @@ config/features=PackedStringArray("4.0", "Vulkan Clustered")
 
 [autoload]
 
+user_settings="*res://scripts/user_settings.gd"
 Themes="*res://scripts/themes.gd"
 Common="*res://scripts/common.gd"
 Screenshot="*res://scripts/screenshot.gd"

scenes/music/music_manager.gd

@@ -42,8 +42,8 @@ func _ready():
 #	var t = linear2db(0.0)
 #	var u = db2linear($Music.get_volume_db())
 #	Common.msg_debug("volume :" + str(u))
-	$Window/VBox/Tab/Mixer/MusicLevel/music.set_value( int(db2linear($Music.get_volume_db()) * 100.0))
-	$Window/VBox/Tab/Mixer/MusicLevel/Value.set_text(str(int(db2linear($Music.get_volume_db()) * 100.0)))
+	$Window/VBox/Tab/Mixer/MusicLevel/music.set_value( int(db2linear($Music.get_volume_db()) * float(user_settings.configuration["sound"]["music_volume"])))
+	$Window/VBox/Tab/Mixer/MusicLevel/Value.set_text(str(int(db2linear($Music.get_volume_db()) * float(user_settings.configuration["sound"]["music_volume"]))))
 	var bus_name = $Music.get_bus()
 	Common.msg_debug("bus_name: " + str(bus_name))
 	var bus_id = AudioServer.get_bus_index(bus_name)
@@ -221,7 +221,8 @@ func _on_effect_value_changed(value):
 func _on_music_value_changed(value):
 	$Music.set_volume_db(linear2db(value/100.0))
 	$Window/VBox/Tab/Mixer/MusicLevel/Value.set_text(str(value))
-
+	user_settings.configuration["sound"]["music_volume"] = value
+	user_settings.save()
 
 func _on_global_value_changed(value):
 	AudioServer.set_bus_volume_db(AudioServer.get_bus_index($Music.get_bus()), linear2db(value/100.0))

scripts/README.md

@@ -0,0 +1,5 @@
+# Folder for configuration file
+
+By default, Godot places the "user://" folder there :
+
+- on Linux : `~\.local/share/godot/app_userdata/Third Person basic scene/` 

scripts/user_settings.gd

@@ -0,0 +1,28 @@
+extends Node
+
+var cfg_path = "user://settings.cfg"
+@onready var configuration = get_settings()
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass
+
+func save():
+	var file = ConfigFile.new()
+	for section in configuration.keys():
+		for key in configuration[section].keys():
+			file.set_value(section, key, configuration[section][key])
+	file.save(cfg_path)
+
+func get_settings():
+	var cfg = {}
+	var config = ConfigFile.new()
+	var cfg_file_content = config.load(cfg_path)
+	if cfg_file_content != OK:
+		return cfg
+	for section in config.get_sections():
+		print ("Config section : %s" % section)
+		for parameter in config.get_section_keys(section):
+			print("Config parameter : %s" % parameter)
+			cfg[section] = {parameter:config.get_value(section, parameter)}
+	return cfg