Add better screen hierarchy and placeholder for dev build disclaimer.

osu.Desktop/OsuGameDesktop.cs

@@ -19,19 +19,21 @@ namespace osu.Desktop
 {
     class OsuGameDesktop : OsuGame
     {
+        private VersionManager versionManager;
+
+        public override bool IsDeployedBuild => versionManager.IsDeployedBuild;
+
         public OsuGameDesktop(string[] args = null)
             : base(args)
         {
-
+            versionManager = new VersionManager();
         }
 
         protected override void LoadComplete()
         {
             base.LoadComplete();
 
-            VersionManager versionManager;
-            (versionManager = new VersionManager()).Preload(this, Add);
-            Dependencies.Cache(versionManager);
+            versionManager.Preload(this, Add);
         }
 
         public override void SetHost(BasicGameHost host)

osu.Desktop/Overlays/VersionManager.cs

@@ -25,7 +25,7 @@ namespace osu.Desktop.Overlays
 
         AssemblyName assembly = Assembly.GetEntryAssembly().GetName();
 
-        public bool IsReleaseBuild => assembly.Version.Major > 0;
+        public bool IsDeployedBuild => assembly.Version.Major > 0;
 
         protected override bool HideOnEscape => false;
 
@@ -45,7 +45,7 @@ namespace osu.Desktop.Overlays
             Debug.Assert(isDebug = true);
 
             string version;
-            if (!IsReleaseBuild)
+            if (!IsDeployedBuild)
             {
                 version = @"local " + (isDebug ? @"debug" : @"release");
             }

osu.Game/OsuGame.cs

@@ -31,6 +31,8 @@ namespace osu.Game
 {
     public class OsuGame : OsuGameBase
     {
+        public virtual bool IsDeployedBuild => false;
+
         public Toolbar Toolbar;
 
         private ChatOverlay chat;
@@ -39,8 +41,16 @@ namespace osu.Game
 
         private NotificationManager notificationManager;
 
-        private MainMenu mainMenu => screenStack?.ChildGameScreen as MainMenu;
-        private Intro intro => screenStack as Intro;
+        private Intro intro
+        {
+            get
+            {
+                Screen s = screenStack;
+                while (s != null && !(s is Intro))
+                    s = s.ChildScreen;
+                return s as Intro;
+            }
+        }
 
         private OsuScreen screenStack;
 
@@ -106,7 +116,7 @@ namespace osu.Game
                 }
             });
 
-            (screenStack = new Intro()).Preload(this, d =>
+            (screenStack = new Loader()).Preload(this, d =>
             {
                 screenStack.ModePushed += screenAdded;
                 screenStack.Exited += screenRemoved;
@@ -148,7 +158,7 @@ namespace osu.Game
             (Toolbar = new Toolbar
             {
                 Depth = -3,
-                OnHome = delegate { mainMenu?.MakeCurrent(); },
+                OnHome = delegate { intro?.ChildScreen?.MakeCurrent(); },
                 OnPlayModeChange = delegate (PlayMode m) { PlayMode.Value = m; },
             }).Preload(this, t =>
             {
@@ -226,7 +236,8 @@ namespace osu.Game
                 Toolbar.State = Visibility.Visible;
             }
 
-            Cursor.FadeIn(100);
+            if (newScreen is MainMenu)
+                Cursor.FadeIn(100);
 
             ModeChanged?.Invoke(newScreen);
 
@@ -249,8 +260,8 @@ namespace osu.Game
         {
             base.UpdateAfterChildren();
 
-            if (screenStack.ChildScreen != null)
-                screenStack.ChildScreen.Padding = new MarginPadding { Top = Toolbar.Position.Y + Toolbar.DrawHeight };
+            if (intro?.ChildScreen != null)
+                intro.ChildScreen.Padding = new MarginPadding { Top = Toolbar.Position.Y + Toolbar.DrawHeight };
         }
 
         private void screenAdded(Screen newScreen)

osu.Game/Screens/Loader.cs

@@ -0,0 +1,28 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using osu.Framework.Allocation;
+using osu.Framework.Screens;
+using osu.Game.Screens.Menu;
+
+namespace osu.Game.Screens
+{
+    class Loader : OsuScreen
+    {
+        internal override bool ShowOverlays => false;
+
+        public Loader()
+        {
+            ValidForResume = false;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGame game)
+        {
+            if (game.IsDeployedBuild)
+                new Disclaimer().Preload(game, d => Push((Screen)d));
+            else
+                new Intro().Preload(game, d => Push((Screen)d));
+        }
+    }
+}

osu.Game/Screens/Menu/Disclaimer.cs

@@ -0,0 +1,38 @@
+// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
+// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using osu.Framework.Allocation;
+using osu.Framework.Screens;
+
+namespace osu.Game.Screens.Menu
+{
+    class Disclaimer : OsuScreen
+    {
+        private Intro intro;
+        internal override bool ShowOverlays => false;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGame game)
+        {
+            (intro = new Intro()).Preload(game);
+        }
+
+        protected override void OnEntering(Screen last)
+        {
+            base.OnEntering(last);
+
+            FadeInFromZero(100);
+
+            Delay(5000);
+
+            FadeOut(100);
+
+            Push(intro);
+        }
+    }
+}

osu.Game/Screens/Menu/Intro.cs

@@ -28,7 +28,7 @@ namespace osu.Game.Screens.Menu
         private AudioSample seeya;
         private AudioTrack bgm;
 
-        internal override bool ShowOverlays => (ParentScreen as OsuScreen)?.ShowOverlays ?? false;
+        internal override bool ShowOverlays => false;
 
         protected override BackgroundScreen CreateBackground() => new BackgroundScreenEmpty();
 

osu.Game/osu.Game.csproj

@@ -131,7 +131,9 @@
     <Compile Include="Screens\Charts\ChartInfo.cs" />
     <Compile Include="Screens\Edit\Editor.cs" />
     <Compile Include="Screens\GameScreenWhiteBox.cs" />
+    <Compile Include="Screens\Loader.cs" />
     <Compile Include="Screens\Menu\Button.cs" />
+    <Compile Include="Screens\Menu\Disclaimer.cs" />
     <Compile Include="Screens\Menu\FlowContainerWithOrigin.cs" />
     <Compile Include="Screens\Menu\Intro.cs" />
     <Compile Include="Screens\Menu\ButtonSystem.cs" />