Merge branch 'master' into beatmap-mod-selector

Gemfile.lock

@@ -6,7 +6,7 @@ GEM
       public_suffix (>= 2.0.2, < 4.0)
     atomos (0.1.3)
     babosa (1.0.2)
-    claide (1.0.2)
+    claide (1.0.3)
     colored (1.2)
     colored2 (3.1.2)
     commander-fastlane (4.4.6)
@@ -14,11 +14,11 @@ GEM
     declarative (0.0.10)
     declarative-option (0.1.0)
     digest-crc (0.4.1)
-    domain_name (0.5.20180417)
+    domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
-    dotenv (2.7.1)
+    dotenv (2.7.5)
     emoji_regex (1.0.1)
-    excon (0.62.0)
+    excon (0.66.0)
     faraday (0.15.4)
       multipart-post (>= 1.2, < 3)
     faraday-cookie_jar (0.0.6)
@@ -27,7 +27,7 @@ GEM
     faraday_middleware (0.13.1)
       faraday (>= 0.7.4, < 1.0)
     fastimage (2.1.5)
-    fastlane (2.117.0)
+    fastlane (2.129.0)
       CFPropertyList (>= 2.3, < 4.0.0)
       addressable (>= 2.3, < 3.0.0)
       babosa (>= 1.0.2, < 2.0.0)
@@ -46,8 +46,8 @@ GEM
       google-cloud-storage (>= 1.15.0, < 2.0.0)
       highline (>= 1.7.2, < 2.0.0)
       json (< 3.0.0)
-      mini_magick (~> 4.5.1)
+      jwt (~> 2.1.0)
-      multi_json
+      mini_magick (>= 4.9.4, < 5.0.0)
       multi_xml (~> 0.5)
       multipart-post (~> 2.0.0)
       plist (>= 3.1.0, < 4.0.0)
@@ -56,15 +56,15 @@ GEM
       security (= 0.1.3)
       simctl (~> 1.6.3)
       slack-notifier (>= 2.0.0, < 3.0.0)
-      terminal-notifier (>= 1.6.2, < 2.0.0)
+      terminal-notifier (>= 2.0.0, < 3.0.0)
       terminal-table (>= 1.4.5, < 2.0.0)
       tty-screen (>= 0.6.3, < 1.0.0)
       tty-spinner (>= 0.8.0, < 1.0.0)
       word_wrap (~> 1.0.0)
-      xcodeproj (>= 1.6.0, < 2.0.0)
+      xcodeproj (>= 1.8.1, < 2.0.0)
       xcpretty (~> 0.3.0)
       xcpretty-travis-formatter (>= 0.0.3)
-    fastlane-plugin-clean_testflight_testers (0.2.0)
+    fastlane-plugin-clean_testflight_testers (0.3.0)
     fastlane-plugin-souyuz (0.8.1)
       souyuz (>= 0.8.1)
     fastlane-plugin-xamarin (0.6.3)
@@ -79,7 +79,7 @@ GEM
       signet (~> 0.9)
     google-cloud-core (1.3.0)
       google-cloud-env (~> 1.0)
-    google-cloud-env (1.0.5)
+    google-cloud-env (1.2.0)
       faraday (~> 0.11)
     google-cloud-storage (1.16.0)
       digest-crc (~> 0.4)
@@ -102,17 +102,17 @@ GEM
     memoist (0.16.0)
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2018.0812)
+    mime-types-data (3.2019.0331)
-    mini_magick (4.5.1)
+    mini_magick (4.9.5)
     mini_portile2 (2.4.0)
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     nanaimo (0.2.6)
     naturally (2.2.0)
-    nokogiri (1.10.1)
+    nokogiri (1.10.4)
       mini_portile2 (~> 2.4.0)
-    os (1.0.0)
+    os (1.0.1)
     plist (3.5.0)
     public_suffix (2.0.5)
     representable (3.0.4)
@@ -121,7 +121,7 @@ GEM
       uber (< 0.2.0)
     retriable (3.1.2)
     rouge (2.0.7)
-    rubyzip (1.2.2)
+    rubyzip (1.2.3)
     security (0.1.3)
     signet (0.11.0)
       addressable (~> 2.3)
@@ -136,20 +136,20 @@ GEM
       fastlane (>= 2.29.0)
       highline (~> 1.7)
       nokogiri (~> 1.7)
-    terminal-notifier (1.8.0)
+    terminal-notifier (2.0.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
-    tty-cursor (0.6.1)
+    tty-cursor (0.7.0)
-    tty-screen (0.6.5)
+    tty-screen (0.7.0)
-    tty-spinner (0.9.0)
+    tty-spinner (0.9.1)
-      tty-cursor (~> 0.6.0)
+      tty-cursor (~> 0.7)
     uber (0.1.0)
     unf (0.1.4)
       unf_ext
-    unf_ext (0.0.7.5)
+    unf_ext (0.0.7.6)
-    unicode-display_width (1.4.1)
+    unicode-display_width (1.6.0)
     word_wrap (1.0.0)
-    xcodeproj (1.8.1)
+    xcodeproj (1.12.0)
       CFPropertyList (>= 2.3.3, < 4.0)
       atomos (~> 0.1.3)
       claide (>= 1.0.2, < 2.0)

README.md

@@ -19,8 +19,9 @@ Detailed changelogs are published on the [official osu! site](https://osu.ppy.sh
 ## Requirements
 
 - A desktop platform with the [.NET Core SDK 2.2](https://www.microsoft.com/net/learn/get-started) or higher installed.
+- When running on linux, please have a system-wide ffmpeg installation available to support video decoding.
+- When running on Windows 7 or 8.1, **[additional prerequisites](https://docs.microsoft.com/en-us/dotnet/core/windows-prerequisites?tabs=netcore2x)** may be required to correctly run .NET Core applications if your operating system is not up-to-date with the latest service packs.
 - When working with the codebase, we recommend using an IDE with intellisense and syntax highlighting, such as [Visual Studio 2017+](https://visualstudio.microsoft.com/vs/), [Jetbrains Rider](https://www.jetbrains.com/rider/) or [Visual Studio Code](https://code.visualstudio.com/).
-- Note that there are **[additional requirements for Windows 7 and Windows 8.1](https://docs.microsoft.com/en-us/dotnet/core/windows-prerequisites?tabs=netcore2x)** which you may need to manually install if your operating system is not up-to-date.
 
 ## Running osu!
 

fastlane/Fastfile

@@ -1,22 +1,6 @@
 update_fastlane
 
-default_platform(:ios)
-
 platform :ios do
-  lane :testflight_prune_dry do
-    clean_testflight_testers(days_of_inactivity:45, dry_run: true)
-  end
-
-  # Specify a custom number for what's "inactive"
-  lane :testflight_prune do
-    clean_testflight_testers(days_of_inactivity: 45) # 120 days, so about 4 months
-  end
-
-  lane :update_version do |options|
-    options[:plist_path] = '../osu.iOS/Info.plist'
-    app_version(options)
-  end
-
   desc 'Deploy to testflight'
   lane :beta do |options|
     update_version(options)
@@ -62,4 +46,17 @@ platform :ios do
 
     match(options)
   end
+
+  lane :update_version do |options|
+    options[:plist_path] = '../osu.iOS/Info.plist'
+    app_version(options)
+  end
+
+  lane :testflight_prune_dry do
+    clean_testflight_testers(days_of_inactivity:45, dry_run: true)
+  end
+
+  lane :testflight_prune do
+    clean_testflight_testers(days_of_inactivity: 45)
+  end
 end

fastlane/README.md

@@ -16,21 +16,6 @@ or alternatively using `brew cask install fastlane`
 
 # Available Actions
 ## iOS
-### ios testflight_prune_dry
-```
-fastlane ios testflight_prune_dry
-```
-
-### ios testflight_prune
-```
-fastlane ios testflight_prune
-```
-
-### ios update_version
-```
-fastlane ios update_version
-```
-
 ### ios beta
 ```
 fastlane ios beta
@@ -46,6 +31,21 @@ Compile the project
 fastlane ios provision
 ```
 Install provisioning profiles using match
+### ios update_version
+```
+fastlane ios update_version
+```
+
+### ios testflight_prune_dry
+```
+fastlane ios testflight_prune_dry
+```
+
+### ios testflight_prune
+```
+fastlane ios testflight_prune
+```
+
 
 ----
 

osu.Android.props

@@ -49,9 +49,7 @@
     <None Include="$(MSBuildThisFileDirectory)\osu.licenseheader">
       <Link>osu.licenseheader</Link>
     </None>
-    <AndroidNativeLibrary Include="$(MSBuildThisFileDirectory)\osu.Android\lib\**\*.so">
+    <AndroidNativeLibrary Include="$(OutputPath)\**\*.so" />
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
-    </AndroidNativeLibrary>
   </ItemGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -62,7 +60,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2019.809.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2019.830.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2019.809.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2019.830.1" />
   </ItemGroup>
 </Project>

osu.Desktop/Overlays/VersionManager.cs

@@ -113,13 +113,14 @@ namespace osu.Desktop.Overlays
             }
 
             [BackgroundDependencyLoader]
-            private void load(OsuColour colours, ChangelogOverlay changelog)
+            private void load(OsuColour colours, ChangelogOverlay changelog, NotificationOverlay notificationOverlay)
             {
                 Icon = FontAwesome.Solid.CheckSquare;
                 IconBackgound.Colour = colours.BlueDark;
 
                 Activated = delegate
                 {
+                    notificationOverlay.Hide();
                     changelog.ShowBuild(OsuGameBase.CLIENT_STREAM_NAME, version);
                     return true;
                 };

osu.Game.Rulesets.Catch.Tests.iOS/osu.Game.Rulesets.Catch.Tests.iOS.csproj

@@ -13,14 +13,6 @@
   <ItemGroup>
     <None Include="Info.plist" />
     <None Include="Entitlements.plist" />
-    <None Include="..\osu.iOS\libbass.a">
-      <Link>libbass.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-    <None Include="..\osu.iOS\libbass_fx.a">
-      <Link>libbass_fx.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
     <LinkDescription Include="..\osu.iOS\Linker.xml">
       <Link>Linker.xml</Link>
     </LinkDescription>

osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs

@@ -15,6 +15,7 @@ using osu.Framework.Graphics.Sprites;
 using osuTK.Graphics;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Graphics.Textures;
+using osu.Game.Audio;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -92,7 +93,7 @@ namespace osu.Game.Rulesets.Catch.Tests
                 return null;
             }
 
-            public SampleChannel GetSample(string sampleName) =>
+            public SampleChannel GetSample(ISampleInfo sampleInfo) =>
                 throw new NotImplementedException();
 
             public Texture GetTexture(string componentName) =>

osu.Game.Rulesets.Catch.Tests/osu.Game.Rulesets.Catch.Tests.csproj

@@ -4,7 +4,7 @@
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.14.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
   </ItemGroup>
   <PropertyGroup Label="Project">

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -23,7 +23,7 @@ namespace osu.Game.Rulesets.Catch
 {
     public class CatchRuleset : Ruleset
     {
-        public override DrawableRuleset CreateDrawableRulesetWith(WorkingBeatmap beatmap, IReadOnlyList<Mod> mods) => new DrawableCatchRuleset(this, beatmap, mods);
+        public override DrawableRuleset CreateDrawableRulesetWith(IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods) => new DrawableCatchRuleset(this, beatmap, mods);
         public override IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap) => new CatchBeatmapConverter(beatmap);
         public override IBeatmapProcessor CreateBeatmapProcessor(IBeatmap beatmap) => new CatchBeatmapProcessor(beatmap);
 

osu.Game.Rulesets.Catch/Objects/Drawable/DrawableCatchHitObject.cs

@@ -58,14 +58,12 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
                 ApplyResult(r => r.Type = CheckPosition.Invoke(HitObject) ? HitResult.Perfect : HitResult.Miss);
         }
 
-        protected override bool UseTransformStateManagement => false;
+        protected sealed override double InitialLifetimeOffset => HitObject.TimePreempt;
 
-        protected override void UpdateState(ArmedState state)
+        protected override void UpdateInitialTransforms() => this.FadeInFromZero(200);
+
+        protected override void UpdateStateTransforms(ArmedState state)
         {
-            // TODO: update to use new state management.
-            using (BeginAbsoluteSequence(HitObject.StartTime - HitObject.TimePreempt))
-                this.FadeIn(200);
-
             var endTime = (HitObject as IHasEndTime)?.EndTime ?? HitObject.StartTime;
 
             using (BeginAbsoluteSequence(endTime, true))

osu.Game.Rulesets.Catch/Objects/Drawable/DrawableFruit.cs

@@ -81,7 +81,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     AccentColour = Color4.Red,
-                    Blending = BlendingMode.Additive,
+                    Blending = BlendingParameters.Additive,
                     Alpha = 0.5f,
                     Scale = new Vector2(1.333f)
                 });

osu.Game.Rulesets.Catch/Objects/Drawable/Pieces/Pulp.cs

@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawable.Pieces
             Anchor = Anchor.Centre;
             Origin = Anchor.Centre;
 
-            Blending = BlendingMode.Additive;
+            Blending = BlendingParameters.Additive;
             Colour = Color4.White.Opacity(0.9f);
         }
 

osu.Game.Rulesets.Catch/UI/CatcherArea.cs

@@ -53,7 +53,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 if (lastPlateableFruit == null)
                     return;
 
-                // this is required to make this run after the last caught fruit runs UpdateState at least once.
+                // this is required to make this run after the last caught fruit runs updateState() at least once.
                 // TODO: find a better alternative
                 if (lastPlateableFruit.IsLoaded)
                     action();
@@ -201,7 +201,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 additive.Scale = Scale;
                 additive.Colour = HyperDashing ? Color4.Red : Color4.White;
                 additive.RelativePositionAxes = RelativePositionAxes;
-                additive.Blending = BlendingMode.Additive;
+                additive.Blending = BlendingParameters.Additive;
 
                 AdditiveTarget.Add(additive);
 

osu.Game.Rulesets.Catch/UI/DrawableCatchRuleset.cs

@@ -25,11 +25,11 @@ namespace osu.Game.Rulesets.Catch.UI
 
         protected override bool UserScrollSpeedAdjustment => false;
 
-        public DrawableCatchRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        public DrawableCatchRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
             : base(ruleset, beatmap, mods)
         {
             Direction.Value = ScrollingDirection.Down;
-            TimeRange.Value = BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450);
+            TimeRange.Value = BeatmapDifficulty.DifficultyRange(beatmap.Beatmap.BeatmapInfo.BaseDifficulty.ApproachRate, 1800, 1200, 450);
         }
 
         public override ScoreProcessor CreateScoreProcessor() => new CatchScoreProcessor(this);

osu.Game.Rulesets.Mania.Tests.iOS/osu.Game.Rulesets.Mania.Tests.iOS.csproj

@@ -13,14 +13,6 @@
   <ItemGroup>
     <None Include="Info.plist" />
     <None Include="Entitlements.plist" />
-    <None Include="..\osu.iOS\libbass.a">
-      <Link>libbass.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-    <None Include="..\osu.iOS\libbass_fx.a">
-      <Link>libbass_fx.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
     <LinkDescription Include="..\osu.iOS\Linker.xml">
       <Link>Linker.xml</Link>
     </LinkDescription>

osu.Game.Rulesets.Mania.Tests/osu.Game.Rulesets.Mania.Tests.csproj

@@ -4,7 +4,7 @@
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.14.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
   </ItemGroup>
   <PropertyGroup Label="Project">

osu.Game.Rulesets.Mania/Edit/DrawableManiaEditRuleset.cs

@@ -16,7 +16,7 @@ namespace osu.Game.Rulesets.Mania.Edit
     {
         public new IScrollingInfo ScrollingInfo => base.ScrollingInfo;
 
-        public DrawableManiaEditRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        public DrawableManiaEditRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
             : base(ruleset, beatmap, mods)
         {
         }

osu.Game.Rulesets.Mania/Edit/ManiaHitObjectComposer.cs

@@ -21,7 +21,7 @@ namespace osu.Game.Rulesets.Mania.Edit
     [Cached(Type = typeof(IManiaHitObjectComposer))]
     public class ManiaHitObjectComposer : HitObjectComposer<ManiaHitObject>, IManiaHitObjectComposer
     {
-        protected new DrawableManiaEditRuleset DrawableRuleset { get; private set; }
+        private DrawableManiaEditRuleset drawableRuleset;
 
         public ManiaHitObjectComposer(Ruleset ruleset)
             : base(ruleset)
@@ -33,23 +33,23 @@ namespace osu.Game.Rulesets.Mania.Edit
         /// </summary>
         /// <param name="screenSpacePosition">The screen-space position.</param>
         /// <returns>The column which intersects with <paramref name="screenSpacePosition"/>.</returns>
-        public Column ColumnAt(Vector2 screenSpacePosition) => DrawableRuleset.GetColumnByPosition(screenSpacePosition);
+        public Column ColumnAt(Vector2 screenSpacePosition) => drawableRuleset.GetColumnByPosition(screenSpacePosition);
 
         private DependencyContainer dependencies;
 
         protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
             => dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
-        public int TotalColumns => ((ManiaPlayfield)DrawableRuleset.Playfield).TotalColumns;
+        public int TotalColumns => ((ManiaPlayfield)drawableRuleset.Playfield).TotalColumns;
 
-        protected override DrawableRuleset<ManiaHitObject> CreateDrawableRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        protected override DrawableRuleset<ManiaHitObject> CreateDrawableRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
         {
-            DrawableRuleset = new DrawableManiaEditRuleset(ruleset, beatmap, mods);
+            drawableRuleset = new DrawableManiaEditRuleset(ruleset, beatmap, mods);
 
             // This is the earliest we can cache the scrolling info to ourselves, before masks are added to the hierarchy and inject it
-            dependencies.CacheAs(DrawableRuleset.ScrollingInfo);
+            dependencies.CacheAs(drawableRuleset.ScrollingInfo);
 
-            return DrawableRuleset;
+            return drawableRuleset;
         }
 
         protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => new HitObjectCompositionTool[]

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -31,7 +31,7 @@ namespace osu.Game.Rulesets.Mania
 {
     public class ManiaRuleset : Ruleset
     {
-        public override DrawableRuleset CreateDrawableRulesetWith(WorkingBeatmap beatmap, IReadOnlyList<Mod> mods) => new DrawableManiaRuleset(this, beatmap, mods);
+        public override DrawableRuleset CreateDrawableRulesetWith(IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods) => new DrawableManiaRuleset(this, beatmap, mods);
         public override IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap) => new ManiaBeatmapConverter(beatmap);
         public override PerformanceCalculator CreatePerformanceCalculator(WorkingBeatmap beatmap, ScoreInfo score) => new ManiaPerformanceCalculator(this, beatmap, score);
 

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableBarLine.cs

@@ -69,7 +69,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
                 Alpha = 0.2f;
         }
 
-        protected override void UpdateState(ArmedState state)
+        protected override void UpdateStateTransforms(ArmedState state)
         {
         }
     }

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableHoldNote.cs

@@ -8,6 +8,7 @@ using osu.Framework.Graphics;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Input.Bindings;
+using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI.Scrolling;
 
@@ -104,6 +105,12 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             bodyPiece.Height = DrawHeight - Head.Height / 2 + Tail.Height / 2;
         }
 
+        protected override void UpdateStateTransforms(ArmedState state)
+        {
+            using (BeginDelayedSequence(HitObject.Duration, true))
+                base.UpdateStateTransforms(state);
+        }
+
         protected void BeginHold()
         {
             holdStartTime = Time.Current;

osu.Game.Rulesets.Mania/Objects/Drawables/DrawableManiaHitObject.cs

@@ -45,24 +45,9 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
         {
             Anchor = Origin = e.NewValue == ScrollingDirection.Up ? Anchor.TopCentre : Anchor.BottomCentre;
         }
-    }
 
-    public abstract class DrawableManiaHitObject<TObject> : DrawableManiaHitObject
+        protected override void UpdateStateTransforms(ArmedState state)
-        where TObject : ManiaHitObject
-    {
-        public new readonly TObject HitObject;
-
-        protected DrawableManiaHitObject(TObject hitObject)
-            : base(hitObject)
         {
-            HitObject = hitObject;
-        }
-
-        protected override bool UseTransformStateManagement => false;
-
-        protected override void UpdateState(ArmedState state)
-        {
-            // TODO: update to use new state management.
             switch (state)
             {
                 case ArmedState.Miss:
@@ -75,4 +60,16 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             }
         }
     }
+
+    public abstract class DrawableManiaHitObject<TObject> : DrawableManiaHitObject
+        where TObject : ManiaHitObject
+    {
+        public new readonly TObject HitObject;
+
+        protected DrawableManiaHitObject(TObject hitObject)
+            : base(hitObject)
+        {
+            HitObject = hitObject;
+        }
+    }
 }

osu.Game.Rulesets.Mania/Objects/Drawables/Pieces/BodyPiece.cs

@@ -26,14 +26,14 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
 
         public BodyPiece()
         {
-            Blending = BlendingMode.Additive;
+            Blending = BlendingParameters.Additive;
 
             Children = new[]
             {
                 Background = new Box { RelativeSizeAxes = Axes.Both },
                 Foreground = new BufferedContainer
                 {
-                    Blending = BlendingMode.Additive,
+                    Blending = BlendingParameters.Additive,
                     RelativeSizeAxes = Axes.Both,
                     CacheDrawnFrameBuffer = true,
                     Children = new Drawable[]

osu.Game.Rulesets.Mania/Objects/Drawables/Pieces/LaneGlowPiece.cs

@@ -61,7 +61,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
                 Name = "Top",
                 RelativeSizeAxes = Axes.Both,
                 Height = 0.5f,
-                Blending = BlendingMode.Additive,
+                Blending = BlendingParameters.Additive,
                 Colour = ColourInfo.GradientVertical(Color4.Transparent, Color4.White.Opacity(alpha))
             },
             new Box
@@ -71,7 +71,7 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
                 Origin = Anchor.BottomLeft,
                 RelativeSizeAxes = Axes.Both,
                 Height = 0.5f,
-                Blending = BlendingMode.Additive,
+                Blending = BlendingParameters.Additive,
                 Colour = ColourInfo.GradientVertical(Color4.White.Opacity(alpha), Color4.Transparent)
             }
         };

osu.Game.Rulesets.Mania/Replays/ManiaAutoGenerator.cs

@@ -5,6 +5,7 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Replays;
 using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Replays;
 
@@ -77,13 +78,37 @@ namespace osu.Game.Rulesets.Mania.Replays
 
         private IEnumerable<IActionPoint> generateActionPoints()
         {
-            foreach (var obj in Beatmap.HitObjects)
+            for (int i = 0; i < Beatmap.HitObjects.Count; i++)
             {
-                yield return new HitPoint { Time = obj.StartTime, Column = obj.Column };
+                var currentObject = Beatmap.HitObjects[i];
-                yield return new ReleasePoint { Time = ((obj as IHasEndTime)?.EndTime ?? obj.StartTime) + RELEASE_DELAY, Column = obj.Column };
+                var nextObjectInColumn = GetNextObject(i); // Get the next object that requires pressing the same button
+
+                double endTime = (currentObject as IHasEndTime)?.EndTime ?? currentObject.StartTime;
+
+                bool canDelayKeyUp = nextObjectInColumn == null ||
+                                     nextObjectInColumn.StartTime > endTime + RELEASE_DELAY;
+
+                double calculatedDelay = canDelayKeyUp ? RELEASE_DELAY : (nextObjectInColumn.StartTime - endTime) * 0.9;
+
+                yield return new HitPoint { Time = currentObject.StartTime, Column = currentObject.Column };
+
+                yield return new ReleasePoint { Time = endTime + calculatedDelay, Column = currentObject.Column };
             }
         }
 
+        protected override HitObject GetNextObject(int currentIndex)
+        {
+            int desiredColumn = Beatmap.HitObjects[currentIndex].Column;
+
+            for (int i = currentIndex + 1; i < Beatmap.HitObjects.Count; i++)
+            {
+                if (Beatmap.HitObjects[i].Column == desiredColumn)
+                    return Beatmap.HitObjects[i];
+            }
+
+            return null;
+        }
+
         private interface IActionPoint
         {
             double Time { get; set; }

osu.Game.Rulesets.Mania/UI/Components/ColumnBackground.cs

@@ -42,7 +42,7 @@ namespace osu.Game.Rulesets.Mania.UI.Components
                     Name = "Background Gradient Overlay",
                     RelativeSizeAxes = Axes.Both,
                     Height = 0.5f,
-                    Blending = BlendingMode.Additive,
+                    Blending = BlendingParameters.Additive,
                     Alpha = 0
                 }
             };

osu.Game.Rulesets.Mania/UI/DrawableManiaRuleset.cs

@@ -36,11 +36,13 @@ namespace osu.Game.Rulesets.Mania.UI
 
         public IEnumerable<BarLine> BarLines;
 
+        protected override bool RelativeScaleBeatLengths => true;
+
         protected new ManiaRulesetConfigManager Config => (ManiaRulesetConfigManager)base.Config;
 
         private readonly Bindable<ManiaScrollingDirection> configDirection = new Bindable<ManiaScrollingDirection>();
 
-        public DrawableManiaRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        public DrawableManiaRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
             : base(ruleset, beatmap, mods)
         {
             // Generate the bar lines

osu.Game.Rulesets.Osu.Tests.iOS/osu.Game.Rulesets.Osu.Tests.iOS.csproj

@@ -13,14 +13,6 @@
   <ItemGroup>
     <None Include="Info.plist" />
     <None Include="Entitlements.plist" />
-    <None Include="..\osu.iOS\libbass.a">
-      <Link>libbass.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-    <None Include="..\osu.iOS\libbass_fx.a">
-      <Link>libbass_fx.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
     <LinkDescription Include="..\osu.iOS\Linker.xml">
       <Link>Linker.xml</Link>
     </LinkDescription>

osu.Game.Rulesets.Osu.Tests/SkinnableTestScene.cs

@@ -2,12 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.IO;
+using System.Text.RegularExpressions;
-using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Textures;
 using osu.Framework.IO.Stores;
 using osu.Game.Skinning;
 using osu.Game.Tests.Visual;
@@ -28,38 +28,54 @@ namespace osu.Game.Rulesets.Osu.Tests
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)
         {
-            var skins = new SkinManager(LocalStorage, ContextFactory, null, audio);
+            var dllStore = new DllResourceStore("osu.Game.Rulesets.Osu.Tests.dll");
 
-            metricsSkin = getSkinFromResources(skins, "metrics_skin");
+            metricsSkin = new TestLegacySkin(new SkinInfo(), new NamespacedResourceStore<byte[]>(dllStore, "Resources/metrics_skin"), audio, true);
-            defaultSkin = getSkinFromResources(skins, "default_skin");
+            defaultSkin = new TestLegacySkin(new SkinInfo(), new NamespacedResourceStore<byte[]>(dllStore, "Resources/default_skin"), audio, false);
-            specialSkin = getSkinFromResources(skins, "special_skin");
+            specialSkin = new TestLegacySkin(new SkinInfo(), new NamespacedResourceStore<byte[]>(dllStore, "Resources/special_skin"), audio, true);
         }
 
         public void SetContents(Func<Drawable> creationFunction)
         {
-            Cell(0).Child = new LocalSkinOverrideContainer(null) { RelativeSizeAxes = Axes.Both }.WithChild(creationFunction());
+            Cell(0).Child = createProvider(null, creationFunction);
-            Cell(1).Child = new LocalSkinOverrideContainer(metricsSkin) { RelativeSizeAxes = Axes.Both }.WithChild(creationFunction());
+            Cell(1).Child = createProvider(metricsSkin, creationFunction);
-            Cell(2).Child = new LocalSkinOverrideContainer(defaultSkin) { RelativeSizeAxes = Axes.Both }.WithChild(creationFunction());
+            Cell(2).Child = createProvider(defaultSkin, creationFunction);
-            Cell(3).Child = new LocalSkinOverrideContainer(specialSkin) { RelativeSizeAxes = Axes.Both }.WithChild(creationFunction());
+            Cell(3).Child = createProvider(specialSkin, creationFunction);
         }
 
-        private static Skin getSkinFromResources(SkinManager skins, string name)
+        private Drawable createProvider(Skin skin, Func<Drawable> creationFunction)
         {
-            using (var storage = new DllResourceStore("osu.Game.Rulesets.Osu.Tests.dll"))
+            var mainProvider = new SkinProvidingContainer(skin);
+
+            return mainProvider
+                .WithChild(new SkinProvidingContainer(Ruleset.Value.CreateInstance().CreateLegacySkinProvider(mainProvider))
+                {
+                    Child = creationFunction()
+                });
+        }
+
+        private class TestLegacySkin : LegacySkin
+        {
+            private readonly bool extrapolateAnimations;
+
+            public TestLegacySkin(SkinInfo skin, IResourceStore<byte[]> storage, AudioManager audioManager, bool extrapolateAnimations)
+                : base(skin, storage, audioManager, "skin.ini")
             {
-                var tempName = Path.GetTempFileName();
+                this.extrapolateAnimations = extrapolateAnimations;
+            }
 
-                File.Delete(tempName);
+            public override Texture GetTexture(string componentName)
-                Directory.CreateDirectory(tempName);
+            {
+                // extrapolate frames to test longer animations
+                if (extrapolateAnimations)
+                {
+                    var match = Regex.Match(componentName, "-([0-9]*)");
 
-                var files = storage.GetAvailableResources().Where(f => f.StartsWith($"Resources/{name}"));
+                    if (match.Length > 0 && int.TryParse(match.Groups[1].Value, out var number) && number < 60)
+                        return base.GetTexture(componentName.Replace($"-{number}", $"-{number % 2}"));
+                }
 
-                foreach (var file in files)
+                return base.GetTexture(componentName);
-                    using (var stream = storage.GetStream(file))
-                    using (var newFile = File.Create(Path.Combine(tempName, Path.GetFileName(file))))
-                        stream.CopyTo(newFile);
-
-                return skins.GetSkin(skins.Import(tempName).Result);
             }
         }
     }

osu.Game.Rulesets.Osu.Tests/TestSceneDrawableJudgement.cs

@@ -0,0 +1,34 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Extensions;
+using osu.Framework.Graphics;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public class TestSceneDrawableJudgement : SkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(DrawableJudgement),
+            typeof(DrawableOsuJudgement)
+        };
+
+        public TestSceneDrawableJudgement()
+        {
+            foreach (HitResult result in Enum.GetValues(typeof(HitResult)).OfType<HitResult>().Skip(1))
+                AddStep("Show " + result.GetDescription(), () => SetContents(() =>
+                    new DrawableOsuJudgement(new JudgementResult(null) { Type = result }, null)
+                    {
+                        Anchor = Anchor.Centre,
+                        Origin = Anchor.Centre,
+                    }));
+        }
+    }
+}

osu.Game.Rulesets.Osu.Tests/TestSceneGameplayCursor.cs

@@ -6,29 +6,23 @@ using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Cursor;
-using osu.Game.Graphics.Cursor;
 using osu.Game.Rulesets.Osu.UI.Cursor;
-using osu.Game.Rulesets.UI;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
     [TestFixture]
-    public class TestSceneGameplayCursor : OsuTestScene, IProvideCursor
+    public class TestSceneGameplayCursor : SkinnableTestScene
     {
-        private GameplayCursorContainer cursorContainer;
-
         public override IReadOnlyList<Type> RequiredTypes => new[] { typeof(CursorTrail) };
 
-        public CursorContainer Cursor => cursorContainer;
-
-        public bool ProvidingUserCursor => true;
-
         [BackgroundDependencyLoader]
         private void load()
         {
-            Add(cursorContainer = new OsuCursorContainer { RelativeSizeAxes = Axes.Both });
+            SetContents(() => new OsuCursorContainer
+            {
+                RelativeSizeAxes = Axes.Both,
+                Masking = true,
+            });
         }
     }
 }

osu.Game.Rulesets.Osu.Tests/TestSceneSkinFallbacks.cs

@@ -0,0 +1,157 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Textures;
+using osu.Framework.Timing;
+using osu.Game.Audio;
+using osu.Game.Beatmaps;
+using osu.Game.Configuration;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+using osu.Game.Screens.Play;
+using osu.Game.Skinning;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    [TestFixture]
+    public class TestSceneSkinFallbacks : PlayerTestScene
+    {
+        private readonly TestSource testUserSkin;
+        private readonly TestSource testBeatmapSkin;
+
+        public TestSceneSkinFallbacks()
+            : base(new OsuRuleset())
+        {
+            testUserSkin = new TestSource("user");
+            testBeatmapSkin = new TestSource("beatmap");
+        }
+
+        [Test]
+        public void TestBeatmapSkinDefault()
+        {
+            AddStep("enable user provider", () => testUserSkin.Enabled = true);
+
+            AddStep("enable beatmap skin", () => LocalConfig.Set<bool>(OsuSetting.BeatmapSkins, true));
+            checkNextHitObject("beatmap");
+
+            AddStep("disable beatmap skin", () => LocalConfig.Set<bool>(OsuSetting.BeatmapSkins, false));
+            checkNextHitObject("user");
+
+            AddStep("disable user provider", () => testUserSkin.Enabled = false);
+            checkNextHitObject(null);
+        }
+
+        private void checkNextHitObject(string skin) =>
+            AddUntilStep($"check skin from {skin}", () =>
+            {
+                var firstObject = ((TestPlayer)Player).DrawableRuleset.Playfield.HitObjectContainer.AliveObjects.OfType<DrawableHitCircle>().FirstOrDefault();
+
+                if (firstObject == null)
+                    return false;
+
+                var skinnable = firstObject.ApproachCircle.Child as SkinnableDrawable;
+
+                if (skin == null && skinnable?.Drawable is Sprite)
+                    // check for default skin provider
+                    return true;
+
+                var text = skinnable?.Drawable as SpriteText;
+
+                return text?.Text == skin;
+            });
+
+        [Resolved]
+        private AudioManager audio { get; set; }
+
+        protected override Player CreatePlayer(Ruleset ruleset) => new SkinProvidingPlayer(testUserSkin);
+
+        protected override WorkingBeatmap CreateWorkingBeatmap(IBeatmap beatmap) => new CustomSkinWorkingBeatmap(beatmap, Clock, audio, testBeatmapSkin);
+
+        public class CustomSkinWorkingBeatmap : ClockBackedTestWorkingBeatmap
+        {
+            private readonly ISkinSource skin;
+
+            public CustomSkinWorkingBeatmap(IBeatmap beatmap, IFrameBasedClock frameBasedClock, AudioManager audio, ISkinSource skin)
+                : base(beatmap, frameBasedClock, audio)
+            {
+                this.skin = skin;
+            }
+
+            protected override ISkin GetSkin() => skin;
+        }
+
+        public class SkinProvidingPlayer : TestPlayer
+        {
+            private readonly TestSource userSkin;
+
+            public SkinProvidingPlayer(TestSource userSkin)
+            {
+                this.userSkin = userSkin;
+            }
+
+            private DependencyContainer dependencies;
+
+            protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
+            {
+                dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
+
+                dependencies.CacheAs<ISkinSource>(userSkin);
+
+                return dependencies;
+            }
+        }
+
+        public class TestSource : ISkinSource
+        {
+            private readonly string identifier;
+
+            public TestSource(string identifier)
+            {
+                this.identifier = identifier;
+            }
+
+            public Drawable GetDrawableComponent(string componentName)
+            {
+                if (!enabled) return null;
+
+                return new SpriteText
+                {
+                    Text = identifier,
+                    Font = OsuFont.Default.With(size: 30),
+                };
+            }
+
+            public Texture GetTexture(string componentName) => null;
+
+            public SampleChannel GetSample(ISampleInfo sampleInfo) => null;
+
+            public TValue GetValue<TConfiguration, TValue>(Func<TConfiguration, TValue> query) where TConfiguration : SkinConfiguration => default;
+
+            public event Action SourceChanged;
+
+            private bool enabled = true;
+
+            public bool Enabled
+            {
+                get => enabled;
+                set
+                {
+                    if (value == enabled)
+                        return;
+
+                    enabled = value;
+                    SourceChanged?.Invoke();
+                }
+            }
+        }
+    }
+}

osu.Game.Rulesets.Osu.Tests/TestSceneSlider.cs

@@ -10,7 +10,6 @@ using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osu.Game.Tests.Visual;
 using osuTK;
 using osuTK.Graphics;
 using osu.Game.Rulesets.Mods;
@@ -27,83 +26,96 @@ using osu.Game.Rulesets.Osu.Objects.Drawables.Pieces;
 namespace osu.Game.Rulesets.Osu.Tests
 {
     [TestFixture]
-    public class TestSceneSlider : OsuTestScene
+    public class TestSceneSlider : SkinnableTestScene
     {
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {
+            typeof(Slider),
+            typeof(SliderTick),
+            typeof(SliderTailCircle),
             typeof(SliderBall),
             typeof(SliderBody),
-            typeof(SliderTick),
+            typeof(SnakingSliderBody),
             typeof(DrawableSlider),
             typeof(DrawableSliderTick),
+            typeof(DrawableSliderTail),
+            typeof(DrawableSliderHead),
             typeof(DrawableRepeatPoint),
             typeof(DrawableOsuHitObject)
         };
 
-        private readonly Container content;
+        private Container content;
-        protected override Container<Drawable> Content => content;
+
+        protected override Container<Drawable> Content
+        {
+            get
+            {
+                if (content == null)
+                    base.Content.Add(content = new OsuInputManager(new RulesetInfo { ID = 0 }));
+
+                return content;
+            }
+        }
 
         private int depthIndex;
 
         public TestSceneSlider()
         {
-            base.Content.Add(content = new OsuInputManager(new RulesetInfo { ID = 0 }));
+            AddStep("Big Single", () => SetContents(() => testSimpleBig()));
+            AddStep("Medium Single", () => SetContents(() => testSimpleMedium()));
+            AddStep("Small Single", () => SetContents(() => testSimpleSmall()));
+            AddStep("Big 1 Repeat", () => SetContents(() => testSimpleBig(1)));
+            AddStep("Medium 1 Repeat", () => SetContents(() => testSimpleMedium(1)));
+            AddStep("Small 1 Repeat", () => SetContents(() => testSimpleSmall(1)));
+            AddStep("Big 2 Repeats", () => SetContents(() => testSimpleBig(2)));
+            AddStep("Medium 2 Repeats", () => SetContents(() => testSimpleMedium(2)));
+            AddStep("Small 2 Repeats", () => SetContents(() => testSimpleSmall(2)));
 
-            AddStep("Big Single", () => testSimpleBig());
+            AddStep("Slow Slider", () => SetContents(testSlowSpeed)); // slow long sliders take ages already so no repeat steps
-            AddStep("Medium Single", () => testSimpleMedium());
+            AddStep("Slow Short Slider", () => SetContents(() => testShortSlowSpeed()));
-            AddStep("Small Single", () => testSimpleSmall());
+            AddStep("Slow Short Slider 1 Repeats", () => SetContents(() => testShortSlowSpeed(1)));
-            AddStep("Big 1 Repeat", () => testSimpleBig(1));
+            AddStep("Slow Short Slider 2 Repeats", () => SetContents(() => testShortSlowSpeed(2)));
-            AddStep("Medium 1 Repeat", () => testSimpleMedium(1));
-            AddStep("Small 1 Repeat", () => testSimpleSmall(1));
-            AddStep("Big 2 Repeats", () => testSimpleBig(2));
-            AddStep("Medium 2 Repeats", () => testSimpleMedium(2));
-            AddStep("Small 2 Repeats", () => testSimpleSmall(2));
 
-            AddStep("Slow Slider", testSlowSpeed); // slow long sliders take ages already so no repeat steps
+            AddStep("Fast Slider", () => SetContents(() => testHighSpeed()));
-            AddStep("Slow Short Slider", () => testShortSlowSpeed());
+            AddStep("Fast Slider 1 Repeat", () => SetContents(() => testHighSpeed(1)));
-            AddStep("Slow Short Slider 1 Repeats", () => testShortSlowSpeed(1));
+            AddStep("Fast Slider 2 Repeats", () => SetContents(() => testHighSpeed(2)));
-            AddStep("Slow Short Slider 2 Repeats", () => testShortSlowSpeed(2));
+            AddStep("Fast Short Slider", () => SetContents(() => testShortHighSpeed()));
+            AddStep("Fast Short Slider 1 Repeat", () => SetContents(() => testShortHighSpeed(1)));
+            AddStep("Fast Short Slider 2 Repeats", () => SetContents(() => testShortHighSpeed(2)));
+            AddStep("Fast Short Slider 6 Repeats", () => SetContents(() => testShortHighSpeed(6)));
 
-            AddStep("Fast Slider", () => testHighSpeed());
+            AddStep("Perfect Curve", () => SetContents(() => testPerfect()));
-            AddStep("Fast Slider 1 Repeat", () => testHighSpeed(1));
+            AddStep("Perfect Curve 1 Repeat", () => SetContents(() => testPerfect(1)));
-            AddStep("Fast Slider 2 Repeats", () => testHighSpeed(2));
+            AddStep("Perfect Curve 2 Repeats", () => SetContents(() => testPerfect(2)));
-            AddStep("Fast Short Slider", () => testShortHighSpeed());
-            AddStep("Fast Short Slider 1 Repeat", () => testShortHighSpeed(1));
-            AddStep("Fast Short Slider 2 Repeats", () => testShortHighSpeed(2));
-            AddStep("Fast Short Slider 6 Repeats", () => testShortHighSpeed(6));
 
-            AddStep("Perfect Curve", () => testPerfect());
+            AddStep("Linear Slider", () => SetContents(() => testLinear()));
-            AddStep("Perfect Curve 1 Repeat", () => testPerfect(1));
+            AddStep("Linear Slider 1 Repeat", () => SetContents(() => testLinear(1)));
-            AddStep("Perfect Curve 2 Repeats", () => testPerfect(2));
+            AddStep("Linear Slider 2 Repeats", () => SetContents(() => testLinear(2)));
 
-            AddStep("Linear Slider", () => testLinear());
+            AddStep("Bezier Slider", () => SetContents(() => testBezier()));
-            AddStep("Linear Slider 1 Repeat", () => testLinear(1));
+            AddStep("Bezier Slider 1 Repeat", () => SetContents(() => testBezier(1)));
-            AddStep("Linear Slider 2 Repeats", () => testLinear(2));
+            AddStep("Bezier Slider 2 Repeats", () => SetContents(() => testBezier(2)));
 
-            AddStep("Bezier Slider", () => testBezier());
+            AddStep("Linear Overlapping", () => SetContents(() => testLinearOverlapping()));
-            AddStep("Bezier Slider 1 Repeat", () => testBezier(1));
+            AddStep("Linear Overlapping 1 Repeat", () => SetContents(() => testLinearOverlapping(1)));
-            AddStep("Bezier Slider 2 Repeats", () => testBezier(2));
+            AddStep("Linear Overlapping 2 Repeats", () => SetContents(() => testLinearOverlapping(2)));
 
-            AddStep("Linear Overlapping", () => testLinearOverlapping());
+            AddStep("Catmull Slider", () => SetContents(() => testCatmull()));
-            AddStep("Linear Overlapping 1 Repeat", () => testLinearOverlapping(1));
+            AddStep("Catmull Slider 1 Repeat", () => SetContents(() => testCatmull(1)));
-            AddStep("Linear Overlapping 2 Repeats", () => testLinearOverlapping(2));
+            AddStep("Catmull Slider 2 Repeats", () => SetContents(() => testCatmull(2)));
 
-            AddStep("Catmull Slider", () => testCatmull());
+            AddStep("Big Single, Large StackOffset", () => SetContents(() => testSimpleBigLargeStackOffset()));
-            AddStep("Catmull Slider 1 Repeat", () => testCatmull(1));
+            AddStep("Big 1 Repeat, Large StackOffset", () => SetContents(() => testSimpleBigLargeStackOffset(1)));
-            AddStep("Catmull Slider 2 Repeats", () => testCatmull(2));
 
-            AddStep("Big Single, Large StackOffset", () => testSimpleBigLargeStackOffset());
+            AddStep("Distance Overflow", () => SetContents(() => testDistanceOverflow()));
-            AddStep("Big 1 Repeat, Large StackOffset", () => testSimpleBigLargeStackOffset(1));
+            AddStep("Distance Overflow 1 Repeat", () => SetContents(() => testDistanceOverflow(1)));
-
-            AddStep("Distance Overflow", () => testDistanceOverflow());
-            AddStep("Distance Overflow 1 Repeat", () => testDistanceOverflow(1));
         }
 
-        private void testSimpleBig(int repeats = 0) => createSlider(2, repeats: repeats);
+        private Drawable testSimpleBig(int repeats = 0) => createSlider(2, repeats: repeats);
 
-        private void testSimpleBigLargeStackOffset(int repeats = 0) => createSlider(2, repeats: repeats, stackHeight: 10);
+        private Drawable testSimpleBigLargeStackOffset(int repeats = 0) => createSlider(2, repeats: repeats, stackHeight: 10);
 
-        private void testDistanceOverflow(int repeats = 0)
+        private Drawable testDistanceOverflow(int repeats = 0)
         {
             var slider = new Slider
             {
@@ -120,22 +132,22 @@ namespace osu.Game.Rulesets.Osu.Tests
                 StackHeight = 10
             };
 
-            addSlider(slider, 2, 2);
+            return createDrawable(slider, 2, 2);
         }
 
-        private void testSimpleMedium(int repeats = 0) => createSlider(5, repeats: repeats);
+        private Drawable testSimpleMedium(int repeats = 0) => createSlider(5, repeats: repeats);
 
-        private void testSimpleSmall(int repeats = 0) => createSlider(7, repeats: repeats);
+        private Drawable testSimpleSmall(int repeats = 0) => createSlider(7, repeats: repeats);
 
-        private void testSlowSpeed() => createSlider(speedMultiplier: 0.5);
+        private Drawable testSlowSpeed() => createSlider(speedMultiplier: 0.5);
 
-        private void testShortSlowSpeed(int repeats = 0) => createSlider(distance: 100, repeats: repeats, speedMultiplier: 0.5);
+        private Drawable testShortSlowSpeed(int repeats = 0) => createSlider(distance: 100, repeats: repeats, speedMultiplier: 0.5);
 
-        private void testHighSpeed(int repeats = 0) => createSlider(repeats: repeats, speedMultiplier: 15);
+        private Drawable testHighSpeed(int repeats = 0) => createSlider(repeats: repeats, speedMultiplier: 15);
 
-        private void testShortHighSpeed(int repeats = 0) => createSlider(distance: 100, repeats: repeats, speedMultiplier: 15);
+        private Drawable testShortHighSpeed(int repeats = 0) => createSlider(distance: 100, repeats: repeats, speedMultiplier: 15);
 
-        private void createSlider(float circleSize = 2, float distance = 400, int repeats = 0, double speedMultiplier = 2, int stackHeight = 0)
+        private Drawable createSlider(float circleSize = 2, float distance = 400, int repeats = 0, double speedMultiplier = 2, int stackHeight = 0)
         {
             var slider = new Slider
             {
@@ -151,10 +163,10 @@ namespace osu.Game.Rulesets.Osu.Tests
                 StackHeight = stackHeight
             };
 
-            addSlider(slider, circleSize, speedMultiplier);
+            return createDrawable(slider, circleSize, speedMultiplier);
         }
 
-        private void testPerfect(int repeats = 0)
+        private Drawable testPerfect(int repeats = 0)
         {
             var slider = new Slider
             {
@@ -170,12 +182,12 @@ namespace osu.Game.Rulesets.Osu.Tests
                 NodeSamples = createEmptySamples(repeats)
             };
 
-            addSlider(slider, 2, 3);
+            return createDrawable(slider, 2, 3);
         }
 
-        private void testLinear(int repeats = 0) => createLinear(repeats);
+        private Drawable testLinear(int repeats = 0) => createLinear(repeats);
 
-        private void createLinear(int repeats)
+        private Drawable createLinear(int repeats)
         {
             var slider = new Slider
             {
@@ -194,12 +206,12 @@ namespace osu.Game.Rulesets.Osu.Tests
                 NodeSamples = createEmptySamples(repeats)
             };
 
-            addSlider(slider, 2, 3);
+            return createDrawable(slider, 2, 3);
         }
 
-        private void testBezier(int repeats = 0) => createBezier(repeats);
+        private Drawable testBezier(int repeats = 0) => createBezier(repeats);
 
-        private void createBezier(int repeats)
+        private Drawable createBezier(int repeats)
         {
             var slider = new Slider
             {
@@ -217,12 +229,12 @@ namespace osu.Game.Rulesets.Osu.Tests
                 NodeSamples = createEmptySamples(repeats)
             };
 
-            addSlider(slider, 2, 3);
+            return createDrawable(slider, 2, 3);
         }
 
-        private void testLinearOverlapping(int repeats = 0) => createOverlapping(repeats);
+        private Drawable testLinearOverlapping(int repeats = 0) => createOverlapping(repeats);
 
-        private void createOverlapping(int repeats)
+        private Drawable createOverlapping(int repeats)
         {
             var slider = new Slider
             {
@@ -241,12 +253,12 @@ namespace osu.Game.Rulesets.Osu.Tests
                 NodeSamples = createEmptySamples(repeats)
             };
 
-            addSlider(slider, 2, 3);
+            return createDrawable(slider, 2, 3);
         }
 
-        private void testCatmull(int repeats = 0) => createCatmull(repeats);
+        private Drawable testCatmull(int repeats = 0) => createCatmull(repeats);
 
-        private void createCatmull(int repeats = 0)
+        private Drawable createCatmull(int repeats = 0)
         {
             var repeatSamples = new List<List<HitSampleInfo>>();
             for (int i = 0; i < repeats; i++)
@@ -267,7 +279,7 @@ namespace osu.Game.Rulesets.Osu.Tests
                 NodeSamples = repeatSamples
             };
 
-            addSlider(slider, 3, 1);
+            return createDrawable(slider, 3, 1);
         }
 
         private List<List<HitSampleInfo>> createEmptySamples(int repeats)
@@ -278,7 +290,7 @@ namespace osu.Game.Rulesets.Osu.Tests
             return repeatSamples;
         }
 
-        private void addSlider(Slider slider, float circleSize, double speedMultiplier)
+        private Drawable createDrawable(Slider slider, float circleSize, double speedMultiplier)
         {
             var cpi = new ControlPointInfo();
             cpi.DifficultyPoints.Add(new DifficultyControlPoint { SpeedMultiplier = speedMultiplier });
@@ -296,7 +308,7 @@ namespace osu.Game.Rulesets.Osu.Tests
 
             drawable.OnNewResult += onNewResult;
 
-            Add(drawable);
+            return drawable;
         }
 
         private float judgementOffsetDirection = 1;

osu.Game.Rulesets.Osu.Tests/osu.Game.Rulesets.Osu.Tests.csproj

@@ -4,7 +4,7 @@
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.14.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
   </ItemGroup>
   <PropertyGroup Label="Project">

osu.Game.Rulesets.Osu/Edit/DrawableOsuEditRuleset.cs

@@ -12,7 +12,7 @@ namespace osu.Game.Rulesets.Osu.Edit
 {
     public class DrawableOsuEditRuleset : DrawableOsuRuleset
     {
-        public DrawableOsuEditRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        public DrawableOsuEditRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
             : base(ruleset, beatmap, mods)
         {
         }

osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs

@@ -24,7 +24,7 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
         }
 
-        protected override DrawableRuleset<OsuHitObject> CreateDrawableRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        protected override DrawableRuleset<OsuHitObject> CreateDrawableRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
             => new DrawableOsuEditRuleset(ruleset, beatmap, mods);
 
         protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => new HitObjectCompositionTool[]

osu.Game.Rulesets.Osu/Objects/Drawables/Connections/FollowPoint.cs

@@ -36,7 +36,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
                 Child = new Box
                 {
                     Size = new Vector2(width),
-                    Blending = BlendingMode.Additive,
+                    Blending = BlendingParameters.Additive,
                     Origin = Anchor.Centre,
                     Anchor = Anchor.Centre,
                     Alpha = 0.5f,

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableHitCircle.cs

@@ -29,6 +29,8 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
         private readonly HitArea hitArea;
 
+        private readonly SkinnableDrawable mainContent;
+
         public DrawableHitCircle(HitCircle h)
             : base(h)
         {
@@ -56,7 +58,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                                 return true;
                             },
                         },
-                        new SkinnableDrawable("Play/osu/hitcircle", _ => new MainCirclePiece(HitObject.IndexInCurrentCombo)),
+                        mainContent = new SkinnableDrawable("Play/osu/hitcircle", _ => new MainCirclePiece(HitObject.IndexInCurrentCombo)),
                         ApproachCircle = new ApproachCircle
                         {
                             Alpha = 0,
@@ -108,6 +110,8 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
             base.UpdateInitialTransforms();
 
+            mainContent.FadeInFromZero(HitObject.TimeFadeIn);
+
             ApproachCircle.FadeIn(Math.Min(HitObject.TimeFadeIn * 2, HitObject.TimePreempt));
             ApproachCircle.ScaleTo(1f, HitObject.TimePreempt);
             ApproachCircle.Expire(true);

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableOsuHitObject.cs

@@ -36,8 +36,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
         protected sealed override double InitialLifetimeOffset => HitObject.TimePreempt;
 
-        protected override void UpdateInitialTransforms() => this.FadeIn(HitObject.TimeFadeIn);
-
         private OsuInputManager osuActionInputManager;
         internal OsuInputManager OsuActionInputManager => osuActionInputManager ?? (osuActionInputManager = GetContainingInputManager() as OsuInputManager);
 

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableRepeatPoint.cs

@@ -32,7 +32,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
             Size = new Vector2(OsuHitObject.OBJECT_RADIUS * 2);
 
-            Blending = BlendingMode.Additive;
+            Blending = BlendingParameters.Additive;
             Origin = Anchor.Centre;
 
             InternalChild = scaleContainer = new SkinnableDrawable("Play/osu/reversearrow", _ => new SpriteIcon

osu.Game.Rulesets.Osu/Objects/Drawables/DrawableSlider.cs

@@ -93,6 +93,13 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             }
         }
 
+        protected override void UpdateInitialTransforms()
+        {
+            base.UpdateInitialTransforms();
+
+            Body.FadeInFromZero(HitObject.TimeFadeIn);
+        }
+
         [BackgroundDependencyLoader]
         private void load()
         {

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/CirclePiece.cs

@@ -36,7 +36,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
                 new TrianglesPiece
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Blending = BlendingMode.Additive,
+                    Blending = BlendingParameters.Additive,
                     Alpha = 0.5f,
                 }
             };

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/ExplodePiece.cs

@@ -17,12 +17,12 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             Anchor = Anchor.Centre;
             Origin = Anchor.Centre;
 
-            Blending = BlendingMode.Additive;
+            Blending = BlendingParameters.Additive;
             Alpha = 0;
 
             Child = new SkinnableDrawable("Play/osu/hitcircle-explode", _ => new TrianglesPiece
             {
-                Blending = BlendingMode.Additive,
+                Blending = BlendingParameters.Additive,
                 RelativeSizeAxes = Axes.Both,
                 Alpha = 0.2f,
             }, s => s.GetTexture("Play/osu/hitcircle") == null);

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/FlashPiece.cs

@@ -18,7 +18,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             Anchor = Anchor.Centre;
             Origin = Anchor.Centre;
 
-            Blending = BlendingMode.Additive;
+            Blending = BlendingParameters.Additive;
             Alpha = 0;
 
             Child = new SkinnableDrawable("Play/osu/hitcircle-flash", name => new CircularContainer

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/GlowPiece.cs

@@ -27,7 +27,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 Texture = textures.Get(name),
-                Blending = BlendingMode.Additive,
+                Blending = BlendingParameters.Additive,
                 Alpha = 0.5f
             }, s => s.GetTexture("Play/osu/hitcircle") == null);
         }

osu.Game.Rulesets.Osu/Objects/Drawables/Pieces/SliderBall.cs

@@ -30,7 +30,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             this.drawableSlider = drawableSlider;
             this.slider = slider;
 
-            Blending = BlendingMode.Additive;
+            Blending = BlendingParameters.Additive;
             Origin = Anchor.Centre;
 
             Size = new Vector2(OsuHitObject.OBJECT_RADIUS * 2);
@@ -55,7 +55,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
                     Child = new Container
                     {
                         RelativeSizeAxes = Axes.Both,
-                        // TODO: support skin filename animation (sliderb0, sliderb1...)
                         Child = new SkinnableDrawable("Play/osu/sliderball", _ => new DefaultSliderBall()),
                     }
                 }
@@ -168,9 +167,20 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             return action == OsuAction.LeftButton || action == OsuAction.RightButton;
         }
 
+        private Vector2? lastPosition;
+
         public void UpdateProgress(double completionProgress)
         {
-            Position = slider.CurvePositionAt(completionProgress);
+            var newPos = slider.CurvePositionAt(completionProgress);
+
+            var diff = lastPosition.HasValue ? lastPosition.Value - newPos : newPos - slider.CurvePositionAt(completionProgress + 0.01f);
+            if (diff == Vector2.Zero)
+                return;
+
+            Position = newPos;
+            Rotation = -90 + (float)(-Math.Atan2(diff.X, diff.Y) * 180 / Math.PI);
+
+            lastPosition = newPos;
         }
 
         private class FollowCircleContainer : Container
@@ -190,7 +200,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
                     Masking = true,
                     BorderThickness = 5,
                     BorderColour = Color4.Orange,
-                    Blending = BlendingMode.Additive,
+                    Blending = BlendingParameters.Additive,
                     Child = new Box
                     {
                         Colour = Color4.Orange,

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -23,13 +23,15 @@ using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Configuration;
 using osu.Game.Rulesets.Osu.Difficulty;
+using osu.Game.Rulesets.Osu.Skinning;
 using osu.Game.Scoring;
+using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Osu
 {
     public class OsuRuleset : Ruleset
     {
-        public override DrawableRuleset CreateDrawableRulesetWith(WorkingBeatmap beatmap, IReadOnlyList<Mod> mods) => new DrawableOsuRuleset(this, beatmap, mods);
+        public override DrawableRuleset CreateDrawableRulesetWith(IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods) => new DrawableOsuRuleset(this, beatmap, mods);
         public override IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap) => new OsuBeatmapConverter(beatmap);
         public override IBeatmapProcessor CreateBeatmapProcessor(IBeatmap beatmap) => new OsuBeatmapProcessor(beatmap);
 
@@ -163,6 +165,8 @@ namespace osu.Game.Rulesets.Osu
 
         public override RulesetSettingsSubsection CreateSettings() => new OsuSettingsSubsection(this);
 
+        public override ISkin CreateLegacySkinProvider(ISkinSource source) => new OsuLegacySkin(source);
+
         public override int? LegacyID => 0;
 
         public override IConvertibleReplayFrame CreateConvertibleReplayFrame() => new OsuReplayFrame();

osu.Game.Rulesets.Osu/Skinning/LegacyCursor.cs

@@ -0,0 +1,42 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Skinning;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Skinning
+{
+    public class LegacyCursor : CompositeDrawable
+    {
+        public LegacyCursor()
+        {
+            Size = new Vector2(50);
+
+            Anchor = Anchor.Centre;
+            Origin = Anchor.Centre;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            InternalChildren = new Drawable[]
+            {
+                new NonPlayfieldSprite
+                {
+                    Texture = skin.GetTexture("cursormiddle"),
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                },
+                new NonPlayfieldSprite
+                {
+                    Texture = skin.GetTexture("cursor"),
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                }
+            };
+        }
+    }
+}

osu.Game.Rulesets.Osu/Skinning/LegacyMainCirclePiece.cs

@@ -0,0 +1,81 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Graphics;
+using osu.Game.Graphics.Sprites;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Skinning;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Osu.Skinning
+{
+    public class LegacyMainCirclePiece : CompositeDrawable
+    {
+        public LegacyMainCirclePiece()
+        {
+            Size = new Vector2(OsuHitObject.OBJECT_RADIUS * 2);
+        }
+
+        private readonly IBindable<ArmedState> state = new Bindable<ArmedState>();
+
+        private readonly Bindable<Color4> accentColour = new Bindable<Color4>();
+
+        [BackgroundDependencyLoader]
+        private void load(DrawableHitObject drawableObject, ISkinSource skin)
+        {
+            Sprite hitCircleSprite;
+
+            InternalChildren = new Drawable[]
+            {
+                hitCircleSprite = new Sprite
+                {
+                    Texture = skin.GetTexture("hitcircle"),
+                    Colour = drawableObject.AccentColour.Value,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                },
+                new SkinnableSpriteText("Play/osu/number-text", _ => new OsuSpriteText
+                {
+                    Font = OsuFont.Numeric.With(size: 40),
+                    UseFullGlyphHeight = false,
+                }, confineMode: ConfineMode.NoScaling)
+                {
+                    Text = (((IHasComboInformation)drawableObject.HitObject).IndexInCurrentCombo + 1).ToString()
+                },
+                new Sprite
+                {
+                    Texture = skin.GetTexture("hitcircleoverlay"),
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                }
+            };
+
+            state.BindTo(drawableObject.State);
+            state.BindValueChanged(updateState, true);
+
+            accentColour.BindTo(drawableObject.AccentColour);
+            accentColour.BindValueChanged(colour => hitCircleSprite.Colour = colour.NewValue, true);
+        }
+
+        private void updateState(ValueChangedEvent<ArmedState> state)
+        {
+            const double legacy_fade_duration = 240;
+
+            switch (state.NewValue)
+            {
+                case ArmedState.Hit:
+                    this.FadeOut(legacy_fade_duration, Easing.Out);
+                    this.ScaleTo(1.4f, legacy_fade_duration, Easing.Out);
+                    break;
+            }
+        }
+    }
+}

osu.Game.Rulesets.Osu/Skinning/LegacySliderBall.cs

@@ -0,0 +1,44 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Skinning;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Osu.Skinning
+{
+    public class LegacySliderBall : CompositeDrawable
+    {
+        private readonly Drawable animationContent;
+
+        public LegacySliderBall(Drawable animationContent)
+        {
+            this.animationContent = animationContent;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin, DrawableHitObject drawableObject)
+        {
+            animationContent.Colour = skin.GetValue<SkinConfiguration, Color4?>(s => s.CustomColours.ContainsKey("SliderBall") ? s.CustomColours["SliderBall"] : (Color4?)null) ?? Color4.White;
+
+            InternalChildren = new[]
+            {
+                new Sprite
+                {
+                    Texture = skin.GetTexture("sliderb-nd"),
+                    Colour = new Color4(5, 5, 5, 255),
+                },
+                animationContent,
+                new Sprite
+                {
+                    Texture = skin.GetTexture("sliderb-spec"),
+                    Blending = BlendingParameters.Additive,
+                },
+            };
+        }
+    }
+}

osu.Game.Rulesets.Osu/Skinning/NonPlayfieldSprite.cs

@@ -0,0 +1,28 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Osu.Skinning
+{
+    /// <summary>
+    /// A sprite which is displayed within the playfield, but historically was not considered part of the playfield.
+    /// Performs scale adjustment to undo the scale applied by <see cref="PlayfieldAdjustmentContainer"/> (osu! ruleset specifically).
+    /// </summary>
+    public class NonPlayfieldSprite : Sprite
+    {
+        public override Texture Texture
+        {
+            get => base.Texture;
+            set
+            {
+                if (value != null)
+                    // stable "magic ratio". see OsuPlayfieldAdjustmentContainer for full explanation.
+                    value.ScaleAdjust *= 1.6f;
+                base.Texture = value;
+            }
+        }
+    }
+}

osu.Game.Rulesets.Osu/Skinning/OsuLegacySkin.cs

@@ -0,0 +1,128 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Audio;
+using osu.Game.Skinning;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Osu.Skinning
+{
+    public class OsuLegacySkin : ISkin
+    {
+        private readonly ISkin source;
+
+        private Lazy<SkinConfiguration> configuration;
+
+        private Lazy<bool> hasHitCircle;
+
+        /// <summary>
+        /// On osu-stable, hitcircles have 5 pixels of transparent padding on each side to allow for shadows etc.
+        /// Their hittable area is 128px, but the actual circle portion is 118px.
+        /// We must account for some gameplay elements such as slider bodies, where this padding is not present.
+        /// </summary>
+        private const float legacy_circle_radius = 64 - 5;
+
+        public OsuLegacySkin(ISkinSource source)
+        {
+            this.source = source;
+
+            source.SourceChanged += sourceChanged;
+            sourceChanged();
+        }
+
+        private void sourceChanged()
+        {
+            // these need to be lazy in order to ensure they aren't called before the dependencies have been loaded into our source.
+            configuration = new Lazy<SkinConfiguration>(() =>
+            {
+                var config = new SkinConfiguration();
+                if (hasHitCircle.Value)
+                    config.SliderPathRadius = legacy_circle_radius;
+
+                // defaults should only be applied for non-beatmap skins (which are parsed via this constructor).
+                config.CustomColours["SliderBall"] =
+                    source.GetValue<SkinConfiguration, Color4?>(s => s.CustomColours.TryGetValue("SliderBall", out var val) ? val : (Color4?)null)
+                    ?? new Color4(2, 170, 255, 255);
+
+                return config;
+            });
+
+            hasHitCircle = new Lazy<bool>(() => source.GetTexture("hitcircle") != null);
+        }
+
+        public Drawable GetDrawableComponent(string componentName)
+        {
+            switch (componentName)
+            {
+                case "Play/osu/sliderfollowcircle":
+                    return this.GetAnimation(componentName, true, true);
+
+                case "Play/osu/sliderball":
+                    var sliderBallContent = this.GetAnimation("sliderb", true, true, "");
+
+                    if (sliderBallContent != null)
+                    {
+                        var size = sliderBallContent.Size;
+
+                        sliderBallContent.RelativeSizeAxes = Axes.Both;
+                        sliderBallContent.Size = Vector2.One;
+
+                        return new LegacySliderBall(sliderBallContent)
+                        {
+                            Size = size
+                        };
+                    }
+
+                    return null;
+
+                case "Play/osu/hitcircle":
+                    if (hasHitCircle.Value)
+                        return new LegacyMainCirclePiece();
+
+                    return null;
+
+                case "Play/osu/cursor":
+                    if (source.GetTexture("cursor") != null)
+                        return new LegacyCursor();
+
+                    return null;
+
+                case "Play/osu/number-text":
+
+                    string font = GetValue<SkinConfiguration, string>(config => config.HitCircleFont);
+                    var overlap = GetValue<SkinConfiguration, float>(config => config.HitCircleOverlap);
+
+                    return !hasFont(font)
+                        ? null
+                        : new LegacySpriteText(source, font)
+                        {
+                            // Spacing value was reverse-engineered from the ratio of the rendered sprite size in the visual inspector vs the actual texture size
+                            Scale = new Vector2(0.96f),
+                            Spacing = new Vector2(-overlap * 0.89f, 0)
+                        };
+            }
+
+            return null;
+        }
+
+        public Texture GetTexture(string componentName) => source.GetTexture(componentName);
+
+        public SampleChannel GetSample(ISampleInfo sample) => source.GetSample(sample);
+
+        public TValue GetValue<TConfiguration, TValue>(Func<TConfiguration, TValue> query) where TConfiguration : SkinConfiguration
+        {
+            TValue val;
+            if (configuration.Value is TConfiguration conf && (val = query.Invoke(conf)) != null)
+                return val;
+
+            return source.GetValue(query);
+        }
+
+        private bool hasFont(string fontName) => source.GetTexture($"{fontName}-0") != null;
+    }
+}

osu.Game.Rulesets.Osu/UI/DrawableOsuRuleset.cs

@@ -25,7 +25,7 @@ namespace osu.Game.Rulesets.Osu.UI
     {
         protected new OsuRulesetConfigManager Config => (OsuRulesetConfigManager)base.Config;
 
-        public DrawableOsuRuleset(Ruleset ruleset, WorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
+        public DrawableOsuRuleset(Ruleset ruleset, IWorkingBeatmap beatmap, IReadOnlyList<Mod> mods)
             : base(ruleset, beatmap, mods)
         {
         }

osu.Game.Rulesets.Osu/UI/OsuPlayfield.cs

@@ -42,9 +42,8 @@ namespace osu.Game.Rulesets.Osu.UI
                 },
                 // Todo: This should not exist, but currently helps to reduce LOH allocations due to unbinding skin source events on judgement disposal
                 // Todo: Remove when hitobjects are properly pooled
-                new LocalSkinOverrideContainer(null)
+                new SkinProvidingContainer(null)
                 {
-                    RelativeSizeAxes = Axes.Both,
                     Child = HitObjectContainer,
                 },
                 approachCircles = new ApproachCircleProxyContainer

osu.Game.Rulesets.Taiko.Tests.iOS/osu.Game.Rulesets.Taiko.Tests.iOS.csproj

@@ -13,14 +13,6 @@
   <ItemGroup>
     <None Include="Info.plist" />
     <None Include="Entitlements.plist" />
-    <None Include="..\osu.iOS\libbass.a">
-      <Link>libbass.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
-    <None Include="..\osu.iOS\libbass_fx.a">
-      <Link>libbass_fx.a</Link>
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
     <LinkDescription Include="..\osu.iOS\Linker.xml">
       <Link>Linker.xml</Link>
     </LinkDescription>

osu.Game.Rulesets.Taiko.Tests/TestSceneSwellJudgements.cs

@@ -0,0 +1,74 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Rulesets.Taiko.Judgements;
+using osu.Game.Rulesets.Taiko.Objects;
+using osu.Game.Screens.Play;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Taiko.Tests
+{
+    public class TestSceneSwellJudgements : PlayerTestScene
+    {
+        protected new TestPlayer Player => (TestPlayer)base.Player;
+
+        public TestSceneSwellJudgements()
+            : base(new TaikoRuleset())
+        {
+        }
+
+        [Test]
+        public void TestZeroTickTimeOffsets()
+        {
+            AddUntilStep("gameplay finished", () => Player.ScoreProcessor.HasCompleted);
+            AddAssert("all tick offsets are 0", () => Player.Results.Where(r => r.Judgement is TaikoSwellTickJudgement).All(r => r.TimeOffset == 0));
+        }
+
+        protected override bool Autoplay => true;
+
+        protected override IBeatmap CreateBeatmap(RulesetInfo ruleset)
+        {
+            var beatmap = new Beatmap<TaikoHitObject>
+            {
+                BeatmapInfo = { Ruleset = new TaikoRuleset().RulesetInfo },
+                HitObjects =
+                {
+                    new Swell
+                    {
+                        StartTime = 1000,
+                        Duration = 1000,
+                    }
+                }
+            };
+
+            return beatmap;
+        }
+
+        protected override Player CreatePlayer(Ruleset ruleset) => new TestPlayer();
+
+        protected class TestPlayer : Player
+        {
+            public readonly List<JudgementResult> Results = new List<JudgementResult>();
+
+            public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
+
+            public TestPlayer()
+                : base(false, false)
+            {
+            }
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                ScoreProcessor.NewJudgement += r => Results.Add(r);
+            }
+        }
+    }
+}

osu.Game.Rulesets.Taiko.Tests/TestSceneTaikoPlayfield.cs

@@ -247,10 +247,6 @@ namespace osu.Game.Rulesets.Taiko.Tests
                 : base(hitObject)
             {
             }
-
-            protected override void UpdateState(ArmedState state)
-            {
-            }
         }
     }
 }

osu.Game.Rulesets.Taiko.Tests/osu.Game.Rulesets.Taiko.Tests.csproj

@@ -4,7 +4,7 @@
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.14.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
   </ItemGroup>
   <PropertyGroup Label="Project">

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableBarLine.cs

@@ -53,9 +53,5 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 Alpha = 0.75f
             });
         }
-
-        protected override void UpdateState(ArmedState state)
-        {
-        }
     }
 }

osu.Game.Rulesets.Taiko/Objects/Drawables/DrawableDrumRoll.cs

@@ -88,13 +88,13 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 ApplyResult(r => r.Type = HitResult.Miss);
         }
 
-        protected override void UpdateState(ArmedState state)
+        protected override void UpdateStateTransforms(ArmedState state)
         {
             switch (state)
             {
                 case ArmedState.Hit:
                 case ArmedState.Miss:
-                    this.FadeOut(100).Expire();
+                    this.Delay(HitObject.Duration).FadeOut(100).Expire();
                     break;
             }
         }