Background music volume can be adjusted

godot_ship/script/audio controller/AudioController.gd

@@ -1,16 +0,0 @@
-extends Control
-
-
-# Declare member variables here. Examples:
-# var a = 2
-# var b = "text"
-
-
-# Called when the node enters the scene tree for the first time.
-func _ready():
-	pass # Replace with function body.
-
-	
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-#func _process(delta):
-#	pass

godot_ship/script/options/OptionsController.gd

@@ -24,6 +24,7 @@ func set_theme(theme_name):
 			emit_signal("change_theme", theme)
 func set_mus_vol(volume):
 	mus_vol = volume
+	AudioServer.set_bus_volume_db(AudioServer.get_bus_index("Master"), mus_vol)
 	emit_signal("change_mus_volume", mus_vol)
 func set_sfx_vol(volume):
 	sfx_vol = volume
@@ -43,6 +44,7 @@ func load_options():
 		mus_vol = f.get_var()
 		sfx_vol = f.get_var()
 		f.close()
+		AudioServer.set_bus_volume_db(AudioServer.get_bus_index("Master"), mus_vol)
 
 # Getters
 func get_theme():