Refactor settings types to use scripting API

Source/Engine/Audio/AudioSettings.h

@@ -8,35 +8,38 @@
 /// <summary>
 /// Audio settings container.
 /// </summary>
-/// <seealso cref="SettingsBase{AudioSettings}" />
-class AudioSettings : public SettingsBase<AudioSettings>
+API_CLASS(sealed, Namespace="FlaxEditor.Content.Settings") class FLAXENGINE_API AudioSettings : public SettingsBase
 {
+DECLARE_SCRIPTING_TYPE_MINIMAL(AudioSettings);
 public:
 
     /// <summary>
     /// If checked, audio playback will be disabled in build game. Can be used if game uses custom audio playback engine.
     /// </summary>
+    API_FIELD(Attributes="EditorOrder(0), DefaultValue(false), EditorDisplay(\"General\")")
     bool DisableAudio = false;
 
     /// <summary>
     /// The doppler effect factor. Scale for source and listener velocities. Default is 1.
     /// </summary>
+    API_FIELD(Attributes="EditorOrder(100), DefaultValue(1.0f), EditorDisplay(\"General\")")
     float DopplerFactor = 1.0f;
 
     /// <summary>
     /// True if mute all audio playback when game has no use focus.
     /// </summary>
+    API_FIELD(Attributes="EditorOrder(200), DefaultValue(true), EditorDisplay(\"General\", \"Mute On Focus Loss\")")
     bool MuteOnFocusLoss = true;
 
 public:
 
+    /// <summary>
+    /// Gets the instance of the settings asset (default value if missing). Object returned by this method is always loaded with valid data to use.
+    /// </summary>
+    static AudioSettings* Get();
+
     // [SettingsBase]
-    void RestoreDefault() final override
-    {
-        DisableAudio = false;
-        DopplerFactor = 1.0f;
-        MuteOnFocusLoss = true;
-    }
+    void Apply() override;
 
     void Deserialize(DeserializeStream& stream, ISerializeModifier* modifier) final override
     {