Add options for game window on macOS

Source/Engine/Platform/Mac/MacPlatformSettings.h

@@ -23,12 +23,42 @@ API_CLASS(sealed, Namespace="FlaxEditor.Content.Settings") class FLAXENGINE_API
     API_FIELD(Attributes="EditorOrder(0), EditorDisplay(\"General\")")
     String AppIdentifier = TEXT("com.${COMPANY_NAME}.${PROJECT_NAME}");
 
+    /// <summary>
+    /// The default game window mode.
+    /// </summary>
+    API_FIELD(Attributes="EditorOrder(110), EditorDisplay(\"Window\")")
+    GameWindowMode WindowMode = GameWindowMode::Windowed;
+
+    /// <summary>
+    /// The default game window width (in pixels).
+    /// </summary>
+    API_FIELD(Attributes="EditorOrder(120), EditorDisplay(\"Window\")")
+    int32 ScreenWidth = 1280;
+
+    /// <summary>
+    /// The default game window height (in pixels).
+    /// </summary>
+    API_FIELD(Attributes="EditorOrder(130), EditorDisplay(\"Window\")")
+    int32 ScreenHeight = 720;
+
+    /// <summary>
+    /// Enables resizing the game window by the user.
+    /// </summary>
+    API_FIELD(Attributes="EditorOrder(140), EditorDisplay(\"Window\")")
+    bool ResizableWindow = false;
+
     /// <summary>
     /// Custom icon texture to use for the application (overrides the default one).
     /// </summary>
     API_FIELD(Attributes="EditorOrder(1000), EditorDisplay(\"Other\")")
     SoftObjectReference<Texture> OverrideIcon;
 
+    /// <summary>
+    /// Enables game running when application window loses focus.
+    /// </summary>
+    API_FIELD(Attributes="EditorOrder(1010), EditorDisplay(\"Other\", \"Run In Background\")")
+    bool RunInBackground = false;
+
 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.
@@ -39,7 +69,12 @@ public:
     void Deserialize(DeserializeStream& stream, ISerializeModifier* modifier) final override
     {
         DESERIALIZE(AppIdentifier);
+        DESERIALIZE(WindowMode);
+        DESERIALIZE(ScreenWidth);
+        DESERIALIZE(ScreenHeight);
+        DESERIALIZE(ResizableWindow);
         DESERIALIZE(OverrideIcon);
+        DESERIALIZE(RunInBackground);
     }
 };