Merge remote-tracking branch 'upstream/master' into catch-legacy-skin-decoding

CodeAnalysis/BannedSymbols.txt

@@ -4,3 +4,5 @@ M:System.ValueType.Equals(System.Object)~System.Boolean;Don't use object.Equals(
 M:System.Nullable`1.Equals(System.Object)~System.Boolean;Use == instead.
 T:System.IComparable;Don't use non-generic IComparable. Use generic version instead.
 M:osu.Framework.Graphics.Sprites.SpriteText.#ctor;Use OsuSpriteText.
+T:Microsoft.EntityFrameworkCore.Internal.EnumerableExtensions;Don't use internal extension methods.
+T:Microsoft.EntityFrameworkCore.Internal.TypeExtensions;Don't use internal extension methods.

Directory.Build.props

@@ -16,9 +16,9 @@
     <EmbeddedResource Include="Resources\**\*.*" />
   </ItemGroup>
   <ItemGroup Label="Code Analysis">
-    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="2.9.8" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.0.0" PrivateAssets="All" />
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)CodeAnalysis\BannedSymbols.txt" />
-    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.8" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="3.0.0" PrivateAssets="All" />
   </ItemGroup>
   <PropertyGroup Label="Code Analysis">
     <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)CodeAnalysis\osu.ruleset</CodeAnalysisRuleSet>

global.json

@@ -5,6 +5,6 @@
     "version": "3.1.100"
   },
   "msbuild-sdks": {
-    "Microsoft.Build.Traversal": "2.0.32"
+    "Microsoft.Build.Traversal": "2.0.34"
   }
 }

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.403.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.403.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.427.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.511.0" />
   </ItemGroup>
 </Project>

osu.Android/OsuGameAndroid.cs

@@ -18,7 +18,8 @@ namespace osu.Android
 
                 try
                 {
-                    string versionName = packageInfo.VersionCode.ToString();
+                    // todo: needs checking before play store redeploy.
+                    string versionName = packageInfo.VersionName;
                     // undo play store version garbling
                     return new Version(int.Parse(versionName.Substring(0, 4)), int.Parse(versionName.Substring(4, 4)), int.Parse(versionName.Substring(8, 1)));
                 }

osu.Desktop/OsuGameDesktop.cs

@@ -6,15 +6,14 @@ using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
+using Microsoft.Win32;
 using osu.Desktop.Overlays;
 using osu.Framework.Platform;
 using osu.Game;
 using osuTK.Input;
-using Microsoft.Win32;
 using osu.Desktop.Updater;
 using osu.Framework;
 using osu.Framework.Logging;
-using osu.Framework.Platform.Windows;
 using osu.Framework.Screens;
 using osu.Game.Screens.Menu;
 using osu.Game.Updater;
@@ -37,7 +36,11 @@ namespace osu.Desktop
             try
             {
                 if (Host is DesktopGameHost desktopHost)
-                    return new StableStorage(desktopHost);
+                {
+                    string stablePath = getStableInstallPath();
+                    if (!string.IsNullOrEmpty(stablePath))
+                        return new DesktopStorage(stablePath, desktopHost);
+                }
             }
             catch (Exception)
             {
@@ -47,6 +50,35 @@ namespace osu.Desktop
             return null;
         }
 
+        private string getStableInstallPath()
+        {
+            static bool checkExists(string p) => Directory.Exists(Path.Combine(p, "Songs"));
+
+            string stableInstallPath;
+
+            try
+            {
+                using (RegistryKey key = Registry.ClassesRoot.OpenSubKey("osu"))
+                    stableInstallPath = key?.OpenSubKey(@"shell\open\command")?.GetValue(string.Empty).ToString().Split('"')[1].Replace("osu!.exe", "");
+
+                if (checkExists(stableInstallPath))
+                    return stableInstallPath;
+            }
+            catch
+            {
+            }
+
+            stableInstallPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"osu!");
+            if (checkExists(stableInstallPath))
+                return stableInstallPath;
+
+            stableInstallPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".osu");
+            if (checkExists(stableInstallPath))
+                return stableInstallPath;
+
+            return null;
+        }
+
         protected override UpdateManager CreateUpdateManager()
         {
             switch (RuntimeInfo.OS)
@@ -111,45 +143,5 @@ namespace osu.Desktop
 
             Task.Factory.StartNew(() => Import(filePaths), TaskCreationOptions.LongRunning);
         }
-
-        /// <summary>
-        /// A method of accessing an osu-stable install in a controlled fashion.
-        /// </summary>
-        private class StableStorage : WindowsStorage
-        {
-            protected override string LocateBasePath()
-            {
-                static bool checkExists(string p) => Directory.Exists(Path.Combine(p, "Songs"));
-
-                string stableInstallPath;
-
-                try
-                {
-                    using (RegistryKey key = Registry.ClassesRoot.OpenSubKey("osu"))
-                        stableInstallPath = key?.OpenSubKey(@"shell\open\command")?.GetValue(string.Empty).ToString().Split('"')[1].Replace("osu!.exe", "");
-
-                    if (checkExists(stableInstallPath))
-                        return stableInstallPath;
-                }
-                catch
-                {
-                }
-
-                stableInstallPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), @"osu!");
-                if (checkExists(stableInstallPath))
-                    return stableInstallPath;
-
-                stableInstallPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".osu");
-                if (checkExists(stableInstallPath))
-                    return stableInstallPath;
-
-                return null;
-            }
-
-            public StableStorage(DesktopGameHost host)
-                : base(string.Empty, host)
-            {
-            }
-        }
     }
 }

osu.Game.Benchmarks/osu.Game.Benchmarks.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.12.0" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
     <PackageReference Include="nunit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
   </ItemGroup>

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

@@ -13,7 +13,7 @@ namespace osu.Game.Rulesets.Catch.Tests
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Catch";
 
-        [TestCase(4.2058561036909863d, "diffcalc-test")]
+        [TestCase(4.050601681491468d, "diffcalc-test")]
         public void Test(double expected, string name)
             => base.Test(expected, name);
 

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

@@ -0,0 +1,21 @@
+// 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 osu.Game.Rulesets.Catch.Skinning;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public abstract class CatchSkinnableTestScene : SkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(CatchRuleset),
+            typeof(CatchLegacySkinTransformer),
+        };
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new CatchRuleset();
+    }
+}

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

@@ -4,26 +4,27 @@
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Game.Rulesets.Catch.UI;
-using osu.Game.Tests.Visual;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
     [TestFixture]
-    public class TestSceneCatcher : SkinnableTestScene
+    public class TestSceneCatcher : CatchSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
         {
             typeof(CatcherArea),
             typeof(CatcherSprite)
-        };
+        }).ToList();
 
         [BackgroundDependencyLoader]
         private void load()
         {
-            SetContents(() => new Catcher
+            SetContents(() => new Catcher(new Container())
             {
                 RelativePositionAxes = Axes.None,
                 Anchor = Anchor.Centre,

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

@@ -17,12 +17,11 @@ using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
     [TestFixture]
-    public class TestSceneCatcherArea : SkinnableTestScene
+    public class TestSceneCatcherArea : CatchSkinnableTestScene
     {
         private RulesetInfo catchRuleset;
 

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

@@ -3,20 +3,20 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
-using osu.Game.Tests.Visual;
 using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
     [TestFixture]
-    public class TestSceneFruitObjects : SkinnableTestScene
+    public class TestSceneFruitObjects : CatchSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
         {
             typeof(CatchHitObject),
             typeof(Fruit),
@@ -30,7 +30,7 @@ namespace osu.Game.Rulesets.Catch.Tests
             typeof(DrawableBanana),
             typeof(DrawableBananaShower),
             typeof(Pulp),
-        };
+        }).ToList();
 
         protected override void LoadComplete()
         {

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

@@ -4,15 +4,10 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Audio.Sample;
-using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
-using osu.Framework.Graphics.Textures;
 using osu.Framework.Testing;
-using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Catch.Objects;
@@ -32,29 +27,111 @@ namespace osu.Game.Rulesets.Catch.Tests
         private SkinManager skins { get; set; }
 
         [Test]
-        public void TestHyperDashCatcherColour()
+        public void TestDefaultCatcherColour()
+        {
+            var skin = new TestSkin();
+
+            checkHyperDashCatcherColour(skin, Catcher.DEFAULT_HYPER_DASH_COLOUR);
+        }
+
+        [Test]
+        public void TestCustomCatcherColour()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashColour = Color4.Goldenrod
+            };
+
+            checkHyperDashCatcherColour(skin, skin.HyperDashColour);
+        }
+
+        [Test]
+        public void TestCustomEndGlowColour()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashAfterImageColour = Color4.Lime
+            };
+
+            checkHyperDashCatcherColour(skin, Catcher.DEFAULT_HYPER_DASH_COLOUR, skin.HyperDashAfterImageColour);
+        }
+
+        [Test]
+        public void TestCustomEndGlowColourPriority()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashColour = Color4.Goldenrod,
+                HyperDashAfterImageColour = Color4.Lime
+            };
+
+            checkHyperDashCatcherColour(skin, skin.HyperDashColour, skin.HyperDashAfterImageColour);
+        }
+
+        [Test]
+        public void TestDefaultFruitColour()
+        {
+            var skin = new TestSkin();
+
+            checkHyperDashFruitColour(skin, Catcher.DEFAULT_HYPER_DASH_COLOUR);
+        }
+
+        [Test]
+        public void TestCustomFruitColour()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashFruitColour = Color4.Cyan
+            };
+
+            checkHyperDashFruitColour(skin, skin.HyperDashFruitColour);
+        }
+
+        [Test]
+        public void TestCustomFruitColourPriority()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashColour = Color4.Goldenrod,
+                HyperDashFruitColour = Color4.Cyan
+            };
+
+            checkHyperDashFruitColour(skin, skin.HyperDashFruitColour);
+        }
+
+        [Test]
+        public void TestFruitColourFallback()
+        {
+            var skin = new TestSkin
+            {
+                HyperDashColour = Color4.Goldenrod
+            };
+
+            checkHyperDashFruitColour(skin, skin.HyperDashColour);
+        }
+
+        private void checkHyperDashCatcherColour(ISkin skin, Color4 expectedCatcherColour, Color4? expectedEndGlowColour = null)
         {
             CatcherArea catcherArea = null;
+            CatcherTrailDisplay trails = null;
 
-            AddStep("setup catcher", () =>
+            AddStep("create hyper-dashing catcher", () =>
             {
                 Child = setupSkinHierarchy(catcherArea = new CatcherArea
                 {
-                    RelativePositionAxes = Axes.None,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Scale = new Vector2(4f),
-                }, false, false, false);
-            });
+                }, skin);
 
-            AddStep("start hyper-dashing", () =>
-            {
+                trails = catcherArea.OfType<CatcherTrailDisplay>().Single();
                 catcherArea.MovableCatcher.SetHyperDashState(2);
-                catcherArea.MovableCatcher.FinishTransforms();
             });
 
-            AddAssert("catcher has default hyper-dash colour", () => catcherArea.MovableCatcher.Colour == Color4.OrangeRed);
-            AddAssert("catcher trails have default hyper-dash colour", () => catcherArea.OfType<Container<CatcherTrailSprite>>().Any(c => c.Colour == Catcher.DefaultHyperDashColour));
+            AddUntilStep("catcher colour is correct", () => catcherArea.MovableCatcher.Colour == expectedCatcherColour);
+
+            AddAssert("catcher trails colours are correct", () => trails.HyperDashTrailsColour == expectedCatcherColour);
+            AddAssert("catcher end-glow colours are correct", () => trails.EndGlowSpritesColour == (expectedEndGlowColour ?? expectedCatcherColour));
 
             AddStep("finish hyper-dashing", () =>
             {
@@ -62,111 +139,14 @@ namespace osu.Game.Rulesets.Catch.Tests
                 catcherArea.MovableCatcher.FinishTransforms();
             });
 
-            AddAssert("hyper-dash colour cleared from catcher", () => catcherArea.MovableCatcher.Colour == Color4.White);
+            AddAssert("catcher colour returned to white", () => catcherArea.MovableCatcher.Colour == Color4.White);
         }
 
-        [Test]
-        public void TestCustomHyperDashCatcherColour()
-        {
-            CatcherArea catcherArea = null;
-
-            AddStep("setup catcher", () =>
-            {
-                Child = setupSkinHierarchy(catcherArea = new CatcherArea
-                {
-                    RelativePositionAxes = Axes.None,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Scale = new Vector2(4f),
-                }, true, false, false);
-            });
-
-            AddStep("start hyper-dashing", () =>
-            {
-                catcherArea.MovableCatcher.SetHyperDashState(2);
-                catcherArea.MovableCatcher.FinishTransforms();
-            });
-
-            AddAssert("catcher use hyper-dash colour from skin", () => catcherArea.MovableCatcher.Colour == TestSkin.CustomHyperDashColour);
-            AddAssert("catcher trails use hyper-dash colour from skin", () => catcherArea.OfType<Container<CatcherTrailSprite>>().Any(c => c.Colour == TestSkin.CustomHyperDashColour));
-
-            AddStep("clear hyper-dash", () =>
-            {
-                catcherArea.MovableCatcher.SetHyperDashState(1);
-                catcherArea.MovableCatcher.FinishTransforms();
-            });
-
-            AddAssert("hyper-dash colour cleared from catcher", () => catcherArea.MovableCatcher.Colour == Color4.White);
-        }
-
-        [Test]
-        public void TestHyperDashCatcherEndGlowColour()
-        {
-            CatcherArea catcherArea = null;
-
-            AddStep("setup catcher", () =>
-            {
-                Child = setupSkinHierarchy(catcherArea = new CatcherArea
-                {
-                    RelativePositionAxes = Axes.None,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Scale = new Vector2(4f),
-                }, false, false, false);
-            });
-
-            AddStep("start hyper-dashing", () => catcherArea.MovableCatcher.SetHyperDashState(2));
-            AddAssert("end-glow catcher sprite has default hyper-dash colour", () => catcherArea.OfType<Container<CatcherTrailSprite>>().Any(c => c.Colour == Catcher.DefaultHyperDashColour));
-        }
-
-        [TestCase(true)]
-        [TestCase(false)]
-        public void TestCustomHyperDashCatcherEndGlowColour(bool customHyperDashCatcherColour)
-        {
-            CatcherArea catcherArea = null;
-
-            AddStep("setup catcher", () =>
-            {
-                Child = setupSkinHierarchy(catcherArea = new CatcherArea
-                {
-                    RelativePositionAxes = Axes.None,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Scale = new Vector2(4f),
-                }, customHyperDashCatcherColour, true, false);
-            });
-
-            AddStep("start hyper-dashing", () => catcherArea.MovableCatcher.SetHyperDashState(2));
-            AddAssert("end-glow catcher sprite use its hyper-dash colour from skin", () => catcherArea.OfType<Container<CatcherTrailSprite>>().Any(c => c.Colour == TestSkin.CustomHyperDashAfterColour));
-        }
-
-        [Test]
-        public void TestCustomHyperDashCatcherEndGlowColourFallback()
-        {
-            CatcherArea catcherArea = null;
-
-            AddStep("setup catcher", () =>
-            {
-                Child = setupSkinHierarchy(catcherArea = new CatcherArea
-                {
-                    RelativePositionAxes = Axes.None,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Scale = new Vector2(4f),
-                }, true, false, false);
-            });
-
-            AddStep("start hyper-dashing", () => catcherArea.MovableCatcher.SetHyperDashState(2));
-            AddAssert("end-glow catcher sprite colour falls back to catcher colour from skin", () => catcherArea.OfType<Container<CatcherTrailSprite>>().Any(c => c.Colour == TestSkin.CustomHyperDashColour));
-        }
-
-        [TestCase(false)]
-        [TestCase(true)]
-        public void TestHyperDashFruitColour(bool legacyFruit)
+        private void checkHyperDashFruitColour(ISkin skin, Color4 expectedColour)
         {
             DrawableFruit drawableFruit = null;
 
-            AddStep("setup hyper-dash fruit", () =>
+            AddStep("create hyper-dash fruit", () =>
             {
                 var fruit = new Fruit { HyperDashTarget = new Banana() };
                 fruit.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
@@ -176,75 +156,16 @@ namespace osu.Game.Rulesets.Catch.Tests
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Scale = new Vector2(4f),
-                }, false, false, false, legacyFruit);
+                }, skin);
             });
 
-            AddAssert("hyper-dash fruit has default colour", () =>
-                legacyFruit
-                    ? checkLegacyFruitHyperDashColour(drawableFruit, Catcher.DefaultHyperDashColour)
-                    : checkFruitHyperDashColour(drawableFruit, Catcher.DefaultHyperDashColour));
+            AddAssert("hyper-dash colour is correct", () => checkLegacyFruitHyperDashColour(drawableFruit, expectedColour));
         }
 
-        [TestCase(false, true)]
-        [TestCase(false, false)]
-        [TestCase(true, true)]
-        [TestCase(true, false)]
-        public void TestCustomHyperDashFruitColour(bool legacyFruit, bool customCatcherHyperDashColour)
-        {
-            DrawableFruit drawableFruit = null;
-
-            AddStep("setup hyper-dash fruit", () =>
-            {
-                var fruit = new Fruit { HyperDashTarget = new Banana() };
-                fruit.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-
-                Child = setupSkinHierarchy(drawableFruit = new DrawableFruit(fruit)
-                {
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Scale = new Vector2(4f),
-                }, customCatcherHyperDashColour, false, true, legacyFruit);
-            });
-
-            AddAssert("hyper-dash fruit use fruit colour from skin", () =>
-                legacyFruit
-                    ? checkLegacyFruitHyperDashColour(drawableFruit, TestSkin.CustomHyperDashFruitColour)
-                    : checkFruitHyperDashColour(drawableFruit, TestSkin.CustomHyperDashFruitColour));
-        }
-
-        [TestCase(false)]
-        [TestCase(true)]
-        public void TestCustomHyperDashFruitColourFallback(bool legacyFruit)
-        {
-            DrawableFruit drawableFruit = null;
-
-            AddStep("setup hyper-dash fruit", () =>
-            {
-                var fruit = new Fruit { HyperDashTarget = new Banana() };
-                fruit.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
-
-                Child = setupSkinHierarchy(
-                    drawableFruit = new DrawableFruit(fruit)
-                    {
-                        Anchor = Anchor.Centre,
-                        Origin = Anchor.Centre,
-                        Scale = new Vector2(4f),
-                    }, true, false, false, legacyFruit);
-            });
-
-            AddAssert("hyper-dash fruit colour falls back to catcher colour from skin", () =>
-                legacyFruit
-                    ? checkLegacyFruitHyperDashColour(drawableFruit, TestSkin.CustomHyperDashColour)
-                    : checkFruitHyperDashColour(drawableFruit, TestSkin.CustomHyperDashColour));
-        }
-
-        private Drawable setupSkinHierarchy(Drawable child, bool customCatcherColour, bool customAfterColour, bool customFruitColour, bool legacySkin = true)
-        {
-            var testSkinProvider = new SkinProvidingContainer(new TestSkin(customCatcherColour, customAfterColour, customFruitColour));
-
-            if (legacySkin)
+        private Drawable setupSkinHierarchy(Drawable child, ISkin skin)
         {
             var legacySkinProvider = new SkinProvidingContainer(skins.GetSkin(DefaultLegacySkin.Info));
+            var testSkinProvider = new SkinProvidingContainer(skin);
             var legacySkinTransformer = new SkinProvidingContainer(new CatchLegacySkinTransformer(testSkinProvider));
 
             return legacySkinProvider
@@ -253,53 +174,32 @@ namespace osu.Game.Rulesets.Catch.Tests
                         .WithChild(child)));
         }
 
-            return testSkinProvider.WithChild(child);
-        }
-
-        private bool checkFruitHyperDashColour(DrawableFruit fruit, Color4 expectedColour) =>
-            fruit.ChildrenOfType<SkinnableDrawable>().First().Drawable.ChildrenOfType<Circle>().Single(c => c.BorderColour == expectedColour).Any(d => d.Colour == expectedColour);
-
         private bool checkLegacyFruitHyperDashColour(DrawableFruit fruit, Color4 expectedColour) =>
             fruit.ChildrenOfType<SkinnableDrawable>().First().Drawable.ChildrenOfType<Sprite>().Any(c => c.Colour == expectedColour);
 
-        private class TestSkin : ISkin
+        private class TestSkin : LegacySkin
         {
-            public static Color4 CustomHyperDashColour { get; } = Color4.Goldenrod;
-            public static Color4 CustomHyperDashFruitColour { get; } = Color4.Cyan;
-            public static Color4 CustomHyperDashAfterColour { get; } = Color4.Lime;
-
-            private readonly bool customCatcherColour;
-            private readonly bool customAfterColour;
-            private readonly bool customFruitColour;
-
-            public TestSkin(bool customCatcherColour, bool customAfterColour, bool customFruitColour)
+            public Color4 HyperDashColour
             {
-                this.customCatcherColour = customCatcherColour;
-                this.customAfterColour = customAfterColour;
-                this.customFruitColour = customFruitColour;
+                get => Configuration.CustomColours[CatchSkinColour.HyperDash.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDash.ToString()] = value;
             }
 
-            public Drawable GetDrawableComponent(ISkinComponent component) => null;
-
-            public Texture GetTexture(string componentName) => null;
-
-            public SampleChannel GetSample(ISampleInfo sampleInfo) => null;
-
-            public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
+            public Color4 HyperDashAfterImageColour
             {
-                if (lookup is CatchSkinColour config)
+                get => Configuration.CustomColours[CatchSkinColour.HyperDashAfterImage.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDashAfterImage.ToString()] = value;
+            }
+
+            public Color4 HyperDashFruitColour
             {
-                    if (config == CatchSkinColour.HyperDash && customCatcherColour)
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(CustomHyperDashColour));
-
-                    if (config == CatchSkinColour.HyperDashFruit && customFruitColour)
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(CustomHyperDashFruitColour));
-
-                    if (config == CatchSkinColour.HyperDashAfterImage && customAfterColour)
-                        return SkinUtils.As<TValue>(new Bindable<Color4>(CustomHyperDashAfterColour));
+                get => Configuration.CustomColours[CatchSkinColour.HyperDashFruit.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDashFruit.ToString()] = value;
             }
 
-                return null;
+            public TestSkin()
+                : base(new SkinInfo(), null, null, string.Empty)
+            {
             }
         }
     }

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyCalculator.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 {
     public class CatchDifficultyCalculator : DifficultyCalculator
     {
-        private const double star_scaling_factor = 0.145;
+        private const double star_scaling_factor = 0.153;
 
         protected override int SectionLength => 750;
 
@@ -71,8 +71,10 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 
         protected override Skill[] CreateSkills(IBeatmap beatmap)
         {
-            using (var catcher = new Catcher(beatmap.BeatmapInfo.BaseDifficulty))
-                halfCatcherWidth = catcher.CatchWidth * 0.5f;
+            halfCatcherWidth = Catcher.CalculateCatchWidth(beatmap.BeatmapInfo.BaseDifficulty) * 0.5f;
+
+            // For circle sizes above 5.5, reduce the catcher width further to simulate imperfect gameplay.
+            halfCatcherWidth *= 1 - (Math.Max(0, beatmap.BeatmapInfo.BaseDifficulty.CircleSize - 5.5f) * 0.0625f);
 
             return new Skill[]
             {

osu.Game.Rulesets.Catch/Difficulty/CatchPerformanceCalculator.cs

@@ -52,8 +52,8 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 
             // Longer maps are worth more
             double lengthBonus =
-                0.95 + 0.4 * Math.Min(1.0, numTotalHits / 3000.0) +
-                (numTotalHits > 3000 ? Math.Log10(numTotalHits / 3000.0) * 0.5 : 0.0);
+                0.95f + 0.3f * Math.Min(1.0f, numTotalHits / 2500.0f) +
+                (numTotalHits > 2500 ? (float)Math.Log10(numTotalHits / 2500.0f) * 0.475f : 0.0f);
 
             // Longer maps are worth more
             value *= lengthBonus;
@@ -63,19 +63,28 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 
             // Combo scaling
             if (Attributes.MaxCombo > 0)
-                value *= Math.Min(Math.Pow(Attributes.MaxCombo, 0.8) / Math.Pow(Attributes.MaxCombo, 0.8), 1.0);
+                value *= Math.Min(Math.Pow(Score.MaxCombo, 0.8) / Math.Pow(Attributes.MaxCombo, 0.8), 1.0);
 
-            double approachRateFactor = 1.0;
-            if (Attributes.ApproachRate > 9.0)
-                approachRateFactor += 0.1 * (Attributes.ApproachRate - 9.0); // 10% for each AR above 9
-            else if (Attributes.ApproachRate < 8.0)
-                approachRateFactor += 0.025 * (8.0 - Attributes.ApproachRate); // 2.5% for each AR below 8
+            float approachRate = (float)Attributes.ApproachRate;
+            float approachRateFactor = 1.0f;
+            if (approachRate > 9.0f)
+                approachRateFactor += 0.1f * (approachRate - 9.0f); // 10% for each AR above 9
+            if (approachRate > 10.0f)
+                approachRateFactor += 0.1f * (approachRate - 10.0f); // Additional 10% at AR 11, 30% total
+            else if (approachRate < 8.0f)
+                approachRateFactor += 0.025f * (8.0f - approachRate); // 2.5% for each AR below 8
 
             value *= approachRateFactor;
 
             if (mods.Any(m => m is ModHidden))
-                // Hiddens gives nothing on max approach rate, and more the lower it is
+            {
                 value *= 1.05 + 0.075 * (10.0 - Math.Min(10.0, Attributes.ApproachRate)); // 7.5% for each AR below 10
+                // Hiddens gives almost nothing on max approach rate, and more the lower it is
+                if (approachRate <= 10.0f)
+                    value *= 1.05f + 0.075f * (10.0f - approachRate); // 7.5% for each AR below 10
+                else if (approachRate > 10.0f)
+                    value *= 1.01f + 0.04f * (11.0f - Math.Min(11.0f, approachRate)); // 5% at AR 10, 1% at AR 11
+            }
 
             if (mods.Any(m => m is ModFlashlight))
                 // Apply length bonus again if flashlight is on simply because it becomes a lot harder on longer maps.

osu.Game.Rulesets.Catch/Difficulty/Preprocessing/CatchDifficultyHitObject.cs

@@ -21,10 +21,12 @@ namespace osu.Game.Rulesets.Catch.Difficulty.Preprocessing
         public readonly float LastNormalizedPosition;
 
         /// <summary>
-        /// Milliseconds elapsed since the start time of the previous <see cref="CatchDifficultyHitObject"/>, with a minimum of 25ms.
+        /// Milliseconds elapsed since the start time of the previous <see cref="CatchDifficultyHitObject"/>, with a minimum of 40ms.
         /// </summary>
         public readonly double StrainTime;
 
+        public readonly double ClockRate;
+
         public CatchDifficultyHitObject(HitObject hitObject, HitObject lastObject, double clockRate, float halfCatcherWidth)
             : base(hitObject, lastObject, clockRate)
         {
@@ -34,8 +36,9 @@ namespace osu.Game.Rulesets.Catch.Difficulty.Preprocessing
             NormalizedPosition = BaseObject.X * CatchPlayfield.BASE_WIDTH * scalingFactor;
             LastNormalizedPosition = LastObject.X * CatchPlayfield.BASE_WIDTH * scalingFactor;
 
-            // Every strain interval is hard capped at the equivalent of 600 BPM streaming speed as a safety measure
-            StrainTime = Math.Max(25, DeltaTime);
+            // Every strain interval is hard capped at the equivalent of 375 BPM streaming speed as a safety measure
+            StrainTime = Math.Max(40, DeltaTime);
+            ClockRate = clockRate;
         }
     }
 }

osu.Game.Rulesets.Catch/Difficulty/Skills/Movement.cs

@@ -13,9 +13,9 @@ namespace osu.Game.Rulesets.Catch.Difficulty.Skills
     {
         private const float absolute_player_positioning_error = 16f;
         private const float normalized_hitobject_radius = 41.0f;
-        private const double direction_change_bonus = 12.5;
+        private const double direction_change_bonus = 21.0;
 
-        protected override double SkillMultiplier => 850;
+        protected override double SkillMultiplier => 900;
         protected override double StrainDecayBase => 0.2;
 
         protected override double DecayWeight => 0.94;
@@ -24,6 +24,7 @@ namespace osu.Game.Rulesets.Catch.Difficulty.Skills
 
         private float? lastPlayerPosition;
         private float lastDistanceMoved;
+        private double lastStrainTime;
 
         public Movement(float halfCatcherWidth)
         {
@@ -45,47 +46,47 @@ namespace osu.Game.Rulesets.Catch.Difficulty.Skills
 
             float distanceMoved = playerPosition - lastPlayerPosition.Value;
 
-            double distanceAddition = Math.Pow(Math.Abs(distanceMoved), 1.3) / 500;
-            double sqrtStrain = Math.Sqrt(catchCurrent.StrainTime);
+            double weightedStrainTime = catchCurrent.StrainTime + 13 + (3 / catchCurrent.ClockRate);
 
-            double bonus = 0;
+            double distanceAddition = (Math.Pow(Math.Abs(distanceMoved), 1.3) / 510);
+            double sqrtStrain = Math.Sqrt(weightedStrainTime);
 
-            // Direction changes give an extra point!
+            double edgeDashBonus = 0;
+
+            // Direction change bonus.
             if (Math.Abs(distanceMoved) > 0.1)
             {
                 if (Math.Abs(lastDistanceMoved) > 0.1 && Math.Sign(distanceMoved) != Math.Sign(lastDistanceMoved))
                 {
-                    double bonusFactor = Math.Min(absolute_player_positioning_error, Math.Abs(distanceMoved)) / absolute_player_positioning_error;
+                    double bonusFactor = Math.Min(50, Math.Abs(distanceMoved)) / 50;
+                    double antiflowFactor = Math.Max(Math.Min(70, Math.Abs(lastDistanceMoved)) / 70, 0.38);
 
-                    distanceAddition += direction_change_bonus / sqrtStrain * bonusFactor;
-
-                    // Bonus for tougher direction switches and "almost" hyperdashes at this point
-                    if (catchCurrent.LastObject.DistanceToHyperDash <= 10 / CatchPlayfield.BASE_WIDTH)
-                        bonus = 0.3 * bonusFactor;
+                    distanceAddition += direction_change_bonus / Math.Sqrt(lastStrainTime + 16) * bonusFactor * antiflowFactor * Math.Max(1 - Math.Pow(weightedStrainTime / 1000, 3), 0);
                 }
 
                 // Base bonus for every movement, giving some weight to streams.
-                distanceAddition += 7.5 * Math.Min(Math.Abs(distanceMoved), normalized_hitobject_radius * 2) / (normalized_hitobject_radius * 6) / sqrtStrain;
+                distanceAddition += 12.5 * Math.Min(Math.Abs(distanceMoved), normalized_hitobject_radius * 2) / (normalized_hitobject_radius * 6) / sqrtStrain;
             }
 
-            // Bonus for "almost" hyperdashes at corner points
-            if (catchCurrent.LastObject.DistanceToHyperDash <= 10.0f / CatchPlayfield.BASE_WIDTH)
+            // Bonus for edge dashes.
+            if (catchCurrent.LastObject.DistanceToHyperDash <= 20.0f / CatchPlayfield.BASE_WIDTH)
             {
                 if (!catchCurrent.LastObject.HyperDash)
-                    bonus += 1.0;
+                    edgeDashBonus += 5.7;
                 else
                 {
                     // After a hyperdash we ARE in the correct position. Always!
                     playerPosition = catchCurrent.NormalizedPosition;
                 }
 
-                distanceAddition *= 1.0 + bonus * ((10 - catchCurrent.LastObject.DistanceToHyperDash * CatchPlayfield.BASE_WIDTH) / 10);
+                distanceAddition *= 1.0 + edgeDashBonus * ((20 - catchCurrent.LastObject.DistanceToHyperDash * CatchPlayfield.BASE_WIDTH) / 20) * Math.Pow((Math.Min(catchCurrent.StrainTime * catchCurrent.ClockRate, 265) / 265), 1.5); // Edge Dashes are easier at lower ms values
             }
 
             lastPlayerPosition = playerPosition;
             lastDistanceMoved = distanceMoved;
+            lastStrainTime = catchCurrent.StrainTime;
 
-            return distanceAddition / catchCurrent.StrainTime;
+            return distanceAddition / weightedStrainTime;
         }
     }
 }

osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs

@@ -9,16 +9,25 @@ using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Play;
 using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
-    public class CatchModRelax : ModRelax, IApplicableToDrawableRuleset<CatchHitObject>
+    public class CatchModRelax : ModRelax, IApplicableToDrawableRuleset<CatchHitObject>, IApplicableToPlayer
     {
         public override string Description => @"Use the mouse to control the catcher.";
 
+        private DrawableRuleset<CatchHitObject> drawableRuleset;
+
         public void ApplyToDrawableRuleset(DrawableRuleset<CatchHitObject> drawableRuleset)
         {
+            this.drawableRuleset = drawableRuleset;
+        }
+
+        public void ApplyToPlayer(Player player)
+        {
+            if (!drawableRuleset.HasReplayLoaded.Value)
                 drawableRuleset.Cursor.Add(new MouseInputHelper((CatchPlayfield)drawableRuleset.Playfield));
         }
 

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

@@ -70,6 +70,8 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
 
         public float DisplayRadius => DrawSize.X / 2 * Scale.X * HitObject.Scale;
 
+        protected override float SamplePlaybackPosition => HitObject.X;
+
         protected DrawableCatchHitObject(CatchHitObject hitObject)
             : base(hitObject)
         {

osu.Game.Rulesets.Catch/Objects/Drawables/FruitPiece.cs

@@ -7,10 +7,8 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
-using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Skinning;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
@@ -34,7 +32,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
         }
 
         [BackgroundDependencyLoader]
-        private void load(DrawableHitObject drawableObject, ISkinSource skin)
+        private void load(DrawableHitObject drawableObject)
         {
             DrawableCatchHitObject drawableCatchObject = (DrawableCatchHitObject)drawableObject;
             hitObject = drawableCatchObject.HitObject;
@@ -63,10 +61,6 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                 },
             });
 
-            var hyperDashColour =
-                skin.GetHyperDashFruitColour()?.Value ??
-                Catcher.DefaultHyperDashColour;
-
             if (hitObject.HyperDash)
             {
                 AddInternal(new Circle
@@ -74,7 +68,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                     RelativeSizeAxes = Axes.Both,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    BorderColour = hyperDashColour,
+                    BorderColour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
                     BorderThickness = 12f * RADIUS_ADJUST,
                     Children = new Drawable[]
                     {
@@ -84,7 +78,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                             Alpha = 0.3f,
                             Blending = BlendingParameters.Additive,
                             RelativeSizeAxes = Axes.Both,
-                            Colour = hyperDashColour,
+                            Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
                         }
                     }
                 });

osu.Game.Rulesets.Catch/Skinning/CatchLegacySkinTransformer.cs

@@ -65,6 +65,15 @@ namespace osu.Game.Rulesets.Catch.Skinning
 
         public SampleChannel GetSample(ISampleInfo sample) => source.GetSample(sample);
 
-        public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup) => source.GetConfig<TLookup, TValue>(lookup);
+        public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
+        {
+            switch (lookup)
+            {
+                case CatchSkinColour colour:
+                    return source.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
+            }
+
+            return source.GetConfig<TLookup, TValue>(lookup);
+        }
     }
 }

osu.Game.Rulesets.Catch/Skinning/CatchSkinColour.cs

@@ -6,12 +6,12 @@ namespace osu.Game.Rulesets.Catch.Skinning
     public enum CatchSkinColour
     {
         /// <summary>
-        /// The colour to be used for the catcher while on hyper-dashing state.
+        /// The colour to be used for the catcher while in hyper-dashing state.
         /// </summary>
         HyperDash,
 
         /// <summary>
-        /// The colour to be used for hyper-dash fruits.
+        /// The colour to be used for fruits that grant the catcher the ability to hyper-dash.
         /// </summary>
         HyperDashFruit,
 

osu.Game.Rulesets.Catch/Skinning/CatchSkinExtensions.cs

@@ -1,23 +0,0 @@
-// 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.Bindables;
-using osu.Game.Skinning;
-using osuTK.Graphics;
-
-namespace osu.Game.Rulesets.Catch.Skinning
-{
-    internal static class CatchSkinExtensions
-    {
-        public static IBindable<Color4> GetHyperDashCatcherColour(this ISkin skin)
-            => skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash);
-
-        public static IBindable<Color4> GetHyperDashCatcherAfterImageColour(this ISkin skin)
-            => skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashAfterImage) ??
-               skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash);
-
-        public static IBindable<Color4> GetHyperDashFruitColour(this ISkin skin)
-            => skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashFruit) ??
-               skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash);
-    }
-}

osu.Game.Rulesets.Catch/Skinning/LegacyFruitPiece.cs

@@ -56,14 +56,16 @@ namespace osu.Game.Rulesets.Catch.Skinning
             {
                 var hyperDash = new Sprite
                 {
-                    Texture = skin.GetTexture(lookupName),
-                    Colour = skin.GetHyperDashFruitColour()?.Value ?? Catcher.DefaultHyperDashColour,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     Blending = BlendingParameters.Additive,
                     Depth = 1,
                     Alpha = 0.7f,
-                    Scale = new Vector2(1.2f)
+                    Scale = new Vector2(1.2f),
+                    Texture = skin.GetTexture(lookupName),
+                    Colour = skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashFruit)?.Value ??
+                             skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value ??
+                             Catcher.DEFAULT_HYPER_DASH_COLOUR,
                 };
 
                 AddInternal(hyperDash);

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

@@ -3,11 +3,11 @@
 
 using System;
 using System.Linq;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Animations;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
@@ -23,7 +23,16 @@ namespace osu.Game.Rulesets.Catch.UI
 {
     public class Catcher : SkinReloadableDrawable, IKeyBindingHandler<CatchAction>
     {
-        public static Color4 DefaultHyperDashColour { get; } = Color4.Red;
+        /// <summary>
+        /// The default colour used to tint hyper-dash fruit, along with the moving catcher, its trail
+        /// and end glow/after-image during a hyper-dash.
+        /// </summary>
+        public static readonly Color4 DEFAULT_HYPER_DASH_COLOUR = Color4.Red;
+
+        /// <summary>
+        /// The duration between transitioning to hyper-dash state.
+        /// </summary>
+        public const double HYPER_DASH_TRANSITION_DURATION = 180;
 
         /// <summary>
         /// Whether we are hyper-dashing or not.
@@ -37,11 +46,10 @@ namespace osu.Game.Rulesets.Catch.UI
 
         public Container ExplodingFruitTarget;
 
-        private Container additiveTarget;
-        private Container<CatcherTrailSprite> dashTrails;
-        private Container<CatcherTrailSprite> hyperDashTrails;
-        private Container<CatcherTrailSprite> endGlowSprites;
+        [NotNull]
+        private readonly Container trailsTarget;
 
+        private CatcherTrailDisplay trails;
 
         public CatcherAnimationState CurrentState { get; private set; }
 
@@ -51,39 +59,29 @@ namespace osu.Game.Rulesets.Catch.UI
         private const float allowed_catch_range = 0.8f;
 
         /// <summary>
-        /// Width of the area that can be used to attempt catches during gameplay.
+        /// The drawable catcher for <see cref="CurrentState"/>.
         /// </summary>
-        internal float CatchWidth => CatcherArea.CATCHER_SIZE * Math.Abs(Scale.X) * allowed_catch_range;
+        internal Drawable CurrentDrawableCatcher => currentCatcher.Drawable;
 
-        protected bool Dashing
+        private bool dashing;
+
+        public bool Dashing
         {
             get => dashing;
-            set
+            protected set
             {
                 if (value == dashing) return;
 
                 dashing = value;
 
-                Trail |= dashing;
+                updateTrailVisibility();
             }
         }
 
         /// <summary>
-        /// Activate or deactivate the trail. Will be automatically deactivated when conditions to keep the trail displayed are no longer met.
+        /// Width of the area that can be used to attempt catches during gameplay.
         /// </summary>
-        protected bool Trail
-        {
-            get => trail;
-            set
-            {
-                if (value == trail || additiveTarget == null) return;
-
-                trail = value;
-
-                if (Trail)
-                    beginTrail();
-            }
-        }
+        private readonly float catchWidth;
 
         private Container<DrawableHitObject> caughtFruit;
 
@@ -93,21 +91,19 @@ namespace osu.Game.Rulesets.Catch.UI
 
         private CatcherSprite currentCatcher;
 
-        private Color4 hyperDashColour = DefaultHyperDashColour;
-        private Color4 hyperDashEndGlowColour = DefaultHyperDashColour;
+        private Color4 hyperDashColour = DEFAULT_HYPER_DASH_COLOUR;
+        private Color4 hyperDashEndGlowColour = DEFAULT_HYPER_DASH_COLOUR;
 
         private int currentDirection;
 
-        private bool dashing;
-
-        private bool trail;
-
         private double hyperDashModifier = 1;
         private int hyperDashDirection;
         private float hyperDashTargetPosition;
 
-        public Catcher(BeatmapDifficulty difficulty = null)
+        public Catcher([NotNull] Container trailsTarget, BeatmapDifficulty difficulty = null)
         {
+            this.trailsTarget = trailsTarget;
+
             RelativePositionAxes = Axes.X;
             X = 0.5f;
 
@@ -115,7 +111,9 @@ namespace osu.Game.Rulesets.Catch.UI
 
             Size = new Vector2(CatcherArea.CATCHER_SIZE);
             if (difficulty != null)
-                Scale = new Vector2(1.0f - 0.7f * (difficulty.CircleSize - 5) / 5);
+                Scale = calculateScale(difficulty);
+
+            catchWidth = CalculateCatchWidth(Scale);
         }
 
         [BackgroundDependencyLoader]
@@ -145,28 +143,30 @@ namespace osu.Game.Rulesets.Catch.UI
                 }
             };
 
+            trailsTarget.Add(trails = new CatcherTrailDisplay(this));
+
             updateCatcher();
         }
 
         /// <summary>
-        /// Sets container target to provide catcher additive trails content in.
+        /// Calculates the scale of the catcher based off the provided beatmap difficulty.
         /// </summary>
-        /// <param name="target">The container to add catcher trails in.</param>
-        public void SetAdditiveTarget(Container target)
-        {
-            if (additiveTarget == target)
-                return;
+        private static Vector2 calculateScale(BeatmapDifficulty difficulty)
+            => new Vector2(1.0f - 0.7f * (difficulty.CircleSize - 5) / 5);
 
-            additiveTarget?.RemoveRange(new[] { dashTrails, hyperDashTrails, endGlowSprites });
+        /// <summary>
+        /// Calculates the width of the area used for attempting catches in gameplay.
+        /// </summary>
+        /// <param name="scale">The scale of the catcher.</param>
+        internal static float CalculateCatchWidth(Vector2 scale)
+            => CatcherArea.CATCHER_SIZE * Math.Abs(scale.X) * allowed_catch_range;
 
-            additiveTarget = target;
-            additiveTarget?.AddRange(new[]
-            {
-                dashTrails ??= new Container<CatcherTrailSprite> { RelativeSizeAxes = Axes.Both, Colour = Color4.White },
-                hyperDashTrails ??= new Container<CatcherTrailSprite> { RelativeSizeAxes = Axes.Both, Colour = hyperDashColour },
-                endGlowSprites ??= new Container<CatcherTrailSprite> { RelativeSizeAxes = Axes.Both, Colour = hyperDashEndGlowColour },
-            });
-        }
+        /// <summary>
+        /// Calculates the width of the area used for attempting catches in gameplay.
+        /// </summary>
+        /// <param name="difficulty">The beatmap difficulty.</param>
+        internal static float CalculateCatchWidth(BeatmapDifficulty difficulty)
+            => CalculateCatchWidth(calculateScale(difficulty));
 
         /// <summary>
         /// Add a caught fruit to the catcher's stack.
@@ -206,7 +206,7 @@ namespace osu.Game.Rulesets.Catch.UI
         /// <returns>Whether the catch is possible.</returns>
         public bool AttemptCatch(CatchHitObject fruit)
         {
-            var halfCatchWidth = CatchWidth * 0.5f;
+            var halfCatchWidth = catchWidth * 0.5f;
 
             // this stuff wil disappear once we move fruit to non-relative coordinate space in the future.
             var catchObjectPosition = fruit.X * CatchPlayfield.BASE_WIDTH;
@@ -255,10 +255,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 hyperDashDirection = 0;
 
                 if (wasHyperDashing)
-                {
-                    updateCatcherColour(false);
-                    Trail &= Dashing;
-                }
+                    runHyperDashStateTransition(false);
             }
             else
             {
@@ -268,36 +265,31 @@ namespace osu.Game.Rulesets.Catch.UI
 
                 if (!wasHyperDashing)
                 {
-                    updateCatcherColour(true);
-                    Trail = true;
-
-                    var hyperDashEndGlow = createAdditiveSprite(endGlowSprites);
-                    hyperDashEndGlow.MoveToOffset(new Vector2(0, -10), 1200, Easing.In);
-                    hyperDashEndGlow.ScaleTo(hyperDashEndGlow.Scale * 0.95f).ScaleTo(hyperDashEndGlow.Scale * 1.2f, 1200, Easing.In);
-                    hyperDashEndGlow.FadeOut(1200);
-                    hyperDashEndGlow.Expire(true);
+                    trails.DisplayEndGlow();
+                    runHyperDashStateTransition(true);
                 }
             }
         }
 
-        private void updateCatcherColour(bool hyperDashing)
+        private void runHyperDashStateTransition(bool hyperDashing)
         {
-            const float hyper_dash_transition_length = 180;
+            trails.HyperDashTrailsColour = hyperDashColour;
+            trails.EndGlowSpritesColour = hyperDashEndGlowColour;
+            updateTrailVisibility();
 
             if (hyperDashing)
             {
-                this.FadeColour(hyperDashColour == DefaultHyperDashColour ? Color4.OrangeRed : hyperDashColour, hyper_dash_transition_length, Easing.OutQuint);
-                this.FadeTo(0.2f, hyper_dash_transition_length, Easing.OutQuint);
+                this.FadeColour(hyperDashColour, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+                this.FadeTo(0.2f, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
             }
             else
             {
-                this.FadeColour(Color4.White, hyper_dash_transition_length, Easing.OutQuint);
-                this.FadeTo(1f, hyper_dash_transition_length, Easing.OutQuint);
+                this.FadeColour(Color4.White, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+                this.FadeTo(1f, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+            }
         }
 
-            hyperDashTrails?.FadeColour(hyperDashColour, hyper_dash_transition_length, Easing.OutQuint);
-            endGlowSprites?.FadeColour(hyperDashEndGlowColour, hyper_dash_transition_length, Easing.OutQuint);
-        }
+        private void updateTrailVisibility() => trails.DisplayTrail = Dashing || HyperDashing;
 
         public bool OnPressed(CatchAction action)
         {
@@ -391,9 +383,15 @@ namespace osu.Game.Rulesets.Catch.UI
         {
             base.SkinChanged(skin, allowFallback);
 
-            hyperDashColour = skin.GetHyperDashCatcherColour()?.Value ?? DefaultHyperDashColour;
-            hyperDashEndGlowColour = skin.GetHyperDashCatcherAfterImageColour()?.Value ?? DefaultHyperDashColour;
-            updateCatcherColour(HyperDashing);
+            hyperDashColour =
+                skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value ??
+                DEFAULT_HYPER_DASH_COLOUR;
+
+            hyperDashEndGlowColour =
+                skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashAfterImage)?.Value ??
+                hyperDashColour;
+
+            runHyperDashStateTransition(HyperDashing);
         }
 
         protected override void Update()
@@ -441,22 +439,6 @@ namespace osu.Game.Rulesets.Catch.UI
             (currentCatcher.Drawable as IFramedAnimation)?.GotoFrame(0);
         }
 
-        private void beginTrail()
-        {
-            if (!dashing && !HyperDashing)
-            {
-                Trail = false;
-                return;
-            }
-
-            var additive = createAdditiveSprite(HyperDashing ? hyperDashTrails : dashTrails);
-
-            additive.FadeTo(0.4f).FadeOut(800, Easing.OutQuint);
-            additive.Expire(true);
-
-            Scheduler.AddDelayed(beginTrail, HyperDashing ? 25 : 50);
-        }
-
         private void updateState(CatcherAnimationState state)
         {
             if (CurrentState == state)
@@ -466,27 +448,6 @@ namespace osu.Game.Rulesets.Catch.UI
             updateCatcher();
         }
 
-        private CatcherTrailSprite createAdditiveSprite(Container<CatcherTrailSprite> target)
-        {
-            if (target == null)
-                return null;
-
-            var tex = (currentCatcher.Drawable as TextureAnimation)?.CurrentFrame ?? ((Sprite)currentCatcher.Drawable).Texture;
-
-            var sprite = new CatcherTrailSprite(tex)
-            {
-                Anchor = Anchor,
-                Scale = Scale,
-                Blending = BlendingParameters.Additive,
-                RelativePositionAxes = RelativePositionAxes,
-                Position = Position
-            };
-
-            target.Add(sprite);
-
-            return sprite;
-        }
-
         private void removeFromPlateWithTransform(DrawableHitObject fruit, Action<DrawableHitObject> action)
         {
             if (ExplodingFruitTarget != null)

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

@@ -33,9 +33,7 @@ namespace osu.Game.Rulesets.Catch.UI
         {
             RelativeSizeAxes = Axes.X;
             Height = CATCHER_SIZE;
-
-            Child = MovableCatcher = new Catcher(difficulty);
-            MovableCatcher.SetAdditiveTarget(this);
+            Child = MovableCatcher = new Catcher(this, difficulty);
         }
 
         public static float GetCatcherSize(BeatmapDifficulty difficulty)

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

@@ -0,0 +1,135 @@
+// 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 JetBrains.Annotations;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Animations;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.UI
+{
+    /// <summary>
+    /// Represents a component responsible for displaying
+    /// the appropriate catcher trails when requested to.
+    /// </summary>
+    public class CatcherTrailDisplay : CompositeDrawable
+    {
+        private readonly Catcher catcher;
+
+        private readonly Container<CatcherTrailSprite> dashTrails;
+        private readonly Container<CatcherTrailSprite> hyperDashTrails;
+        private readonly Container<CatcherTrailSprite> endGlowSprites;
+
+        private Color4 hyperDashTrailsColour;
+
+        public Color4 HyperDashTrailsColour
+        {
+            get => hyperDashTrailsColour;
+            set
+            {
+                if (hyperDashTrailsColour == value)
+                    return;
+
+                hyperDashTrailsColour = value;
+                hyperDashTrails.FadeColour(hyperDashTrailsColour, Catcher.HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+            }
+        }
+
+        private Color4 endGlowSpritesColour;
+
+        public Color4 EndGlowSpritesColour
+        {
+            get => endGlowSpritesColour;
+            set
+            {
+                if (endGlowSpritesColour == value)
+                    return;
+
+                endGlowSpritesColour = value;
+                endGlowSprites.FadeColour(endGlowSpritesColour, Catcher.HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+            }
+        }
+
+        private bool trail;
+
+        /// <summary>
+        /// Whether to start displaying trails following the catcher.
+        /// </summary>
+        public bool DisplayTrail
+        {
+            get => trail;
+            set
+            {
+                if (trail == value)
+                    return;
+
+                trail = value;
+
+                if (trail)
+                    displayTrail();
+            }
+        }
+
+        public CatcherTrailDisplay([NotNull] Catcher catcher)
+        {
+            this.catcher = catcher ?? throw new ArgumentNullException(nameof(catcher));
+
+            RelativeSizeAxes = Axes.Both;
+
+            InternalChildren = new[]
+            {
+                dashTrails = new Container<CatcherTrailSprite> { RelativeSizeAxes = Axes.Both },
+                hyperDashTrails = new Container<CatcherTrailSprite> { RelativeSizeAxes = Axes.Both, Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR },
+                endGlowSprites = new Container<CatcherTrailSprite> { RelativeSizeAxes = Axes.Both, Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR },
+            };
+        }
+
+        /// <summary>
+        /// Displays a single end-glow catcher sprite.
+        /// </summary>
+        public void DisplayEndGlow()
+        {
+            var endGlow = createTrailSprite(endGlowSprites);
+
+            endGlow.MoveToOffset(new Vector2(0, -10), 1200, Easing.In);
+            endGlow.ScaleTo(endGlow.Scale * 0.95f).ScaleTo(endGlow.Scale * 1.2f, 1200, Easing.In);
+            endGlow.FadeOut(1200);
+            endGlow.Expire(true);
+        }
+
+        private void displayTrail()
+        {
+            if (!DisplayTrail)
+                return;
+
+            var sprite = createTrailSprite(catcher.HyperDashing ? hyperDashTrails : dashTrails);
+
+            sprite.FadeTo(0.4f).FadeOut(800, Easing.OutQuint);
+            sprite.Expire(true);
+
+            Scheduler.AddDelayed(displayTrail, catcher.HyperDashing ? 25 : 50);
+        }
+
+        private CatcherTrailSprite createTrailSprite(Container<CatcherTrailSprite> target)
+        {
+            var texture = (catcher.CurrentDrawableCatcher as TextureAnimation)?.CurrentFrame ?? ((Sprite)catcher.CurrentDrawableCatcher).Texture;
+
+            var sprite = new CatcherTrailSprite(texture)
+            {
+                Anchor = catcher.Anchor,
+                Scale = catcher.Scale,
+                Blending = BlendingParameters.Additive,
+                RelativePositionAxes = catcher.RelativePositionAxes,
+                Position = catcher.Position
+            };
+
+            target.Add(sprite);
+
+            return sprite;
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/ManiaLegacyReplayTest.cs

@@ -0,0 +1,51 @@
+// 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 NUnit.Framework;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Replays;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [TestFixture]
+    public class ManiaLegacyReplayTest
+    {
+        [TestCase(ManiaAction.Key1)]
+        [TestCase(ManiaAction.Key1, ManiaAction.Key2)]
+        [TestCase(ManiaAction.Special1)]
+        [TestCase(ManiaAction.Key8)]
+        public void TestEncodeDecodeSingleStage(params ManiaAction[] actions)
+        {
+            var beatmap = new ManiaBeatmap(new StageDefinition { Columns = 9 });
+
+            var frame = new ManiaReplayFrame(0, actions);
+            var legacyFrame = frame.ToLegacy(beatmap);
+
+            var decodedFrame = new ManiaReplayFrame();
+            decodedFrame.FromLegacy(legacyFrame, beatmap);
+
+            Assert.That(decodedFrame.Actions, Is.EquivalentTo(frame.Actions));
+        }
+
+        [TestCase(ManiaAction.Key1)]
+        [TestCase(ManiaAction.Key1, ManiaAction.Key2)]
+        [TestCase(ManiaAction.Special1)]
+        [TestCase(ManiaAction.Special2)]
+        [TestCase(ManiaAction.Special1, ManiaAction.Special2)]
+        [TestCase(ManiaAction.Special1, ManiaAction.Key5)]
+        [TestCase(ManiaAction.Key8)]
+        public void TestEncodeDecodeDualStage(params ManiaAction[] actions)
+        {
+            var beatmap = new ManiaBeatmap(new StageDefinition { Columns = 5 });
+            beatmap.Stages.Add(new StageDefinition { Columns = 5 });
+
+            var frame = new ManiaReplayFrame(0, actions);
+            var legacyFrame = frame.ToLegacy(beatmap);
+
+            var decodedFrame = new ManiaReplayFrame();
+            decodedFrame.FromLegacy(legacyFrame, beatmap);
+
+            Assert.That(decodedFrame.Actions, Is.EquivalentTo(frame.Actions));
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/ManiaPlacementBlueprintTestScene.cs

@@ -41,8 +41,6 @@ namespace osu.Game.Rulesets.Mania.Tests
                 AccentColour = Color4.OrangeRed,
                 Clock = new FramedClock(new StopwatchClock()), // No scroll
             });
-
-            AddStep("change direction", () => ((ScrollingTestContainer)HitObjectContainer).Flip());
         }
 
         protected override Container CreateHitObjectContainer() => new ScrollingTestContainer(ScrollingDirection.Down) { RelativeSizeAxes = Axes.Both };

osu.Game.Rulesets.Mania.Tests/Resources/special-skin/skin.ini

@@ -0,0 +1,6 @@
+[General]
+Version: 2.4
+
+[Mania]
+Keys: 4
+ColumnLineWidth: 3,1,3,1,1

osu.Game.Rulesets.Mania.Tests/Skinning/ManiaSkinnableTestScene.cs

@@ -1,12 +1,15 @@
 // 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 NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Rulesets.Mania.Skinning;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Rulesets.UI.Scrolling.Algorithms;
 using osu.Game.Tests.Visual;
@@ -24,6 +27,15 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
         [Cached(Type = typeof(IScrollingInfo))]
         private readonly TestScrollingInfo scrollingInfo = new TestScrollingInfo();
 
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(ManiaRuleset),
+            typeof(ManiaLegacySkinTransformer),
+            typeof(ManiaSettingsSubsection)
+        };
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new ManiaRuleset();
+
         protected ManiaSkinnableTestScene()
         {
             scrollingInfo.Direction.Value = ScrollingDirection.Down;

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneColumnBackground.cs

@@ -37,7 +37,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
                     {
                         RelativeSizeAxes = Axes.Both,
                         Width = 0.5f,
-                        Child = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.ColumnBackground, 0), _ => new DefaultColumnBackground())
+                        Child = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.ColumnBackground, 1), _ => new DefaultColumnBackground())
                         {
                             RelativeSizeAxes = Axes.Both
                         }

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneDrawableJudgement.cs

@@ -10,11 +10,10 @@ using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
-    public class TestSceneDrawableJudgement : SkinnableTestScene
+    public class TestSceneDrawableJudgement : ManiaSkinnableTestScene
     {
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneStage.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
 
                 return new ManiaInputManager(new ManiaRuleset().RulesetInfo, 4)
                 {
-                    Child = new ManiaStage(0, new StageDefinition { Columns = 4 }, ref normalAction, ref specialAction)
+                    Child = new Stage(0, new StageDefinition { Columns = 4 }, ref normalAction, ref specialAction)
                 };
             });
         }

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneStageBackground.cs

@@ -0,0 +1,35 @@
+// 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.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Rulesets.Mania.Skinning;
+using osu.Game.Rulesets.Mania.UI.Components;
+using osu.Game.Skinning;
+
+namespace osu.Game.Rulesets.Mania.Tests.Skinning
+{
+    public class TestSceneStageBackground : ManiaSkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
+        {
+            typeof(DefaultStageBackground),
+            typeof(LegacyStageBackground),
+        }).ToList();
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            SetContents(() => new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground), _ => new DefaultStageBackground())
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.Both,
+                Width = 0.5f,
+            });
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/Skinning/TestSceneStageForeground.cs

@@ -0,0 +1,33 @@
+// 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.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Rulesets.Mania.Skinning;
+using osu.Game.Skinning;
+
+namespace osu.Game.Rulesets.Mania.Tests.Skinning
+{
+    public class TestSceneStageForeground : ManiaSkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
+        {
+            typeof(LegacyStageForeground),
+        }).ToList();
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            SetContents(() => new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageForeground), _ => null)
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                RelativeSizeAxes = Axes.Both,
+                Width = 0.5f,
+            });
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/TestSceneColumn.cs

@@ -28,7 +28,9 @@ namespace osu.Game.Rulesets.Mania.Tests
         {
             typeof(Column),
             typeof(ColumnBackground),
-            typeof(ColumnHitObjectArea)
+            typeof(ColumnHitObjectArea),
+            typeof(DefaultKeyArea),
+            typeof(DefaultHitTarget)
         };
 
         [Cached(typeof(IReadOnlyList<Mod>))]

osu.Game.Rulesets.Mania.Tests/TestSceneHoldNoteInput.cs

@@ -27,7 +27,6 @@ namespace osu.Game.Rulesets.Mania.Tests
         private const double time_after_tail = 5250;
 
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         /// <summary>
         ///     -----[           ]-----
@@ -283,20 +282,15 @@ namespace osu.Game.Rulesets.Mania.Tests
                     {
                         if (currentPlayer == p) judgementResults.Add(result);
                     };
-                    p.ScoreProcessor.AllJudged += () =>
-                    {
-                        if (currentPlayer == p) allJudgedFired = true;
-                    };
                 };
 
                 LoadScreen(currentPlayer = p);
-                allJudgedFired = false;
                 judgementResults = new List<JudgementResult>();
             });
 
             AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
             AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
-            AddUntilStep("Wait for all judged", () => allJudgedFired);
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
         }
 
         private class ScoreAccessibleReplayPlayer : ReplayPlayer

osu.Game.Rulesets.Mania.Tests/TestSceneManiaHitObjectComposer.cs

@@ -0,0 +1,221 @@
+// 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 NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Edit;
+using osu.Game.Rulesets.Mania.Edit.Blueprints;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Screens.Edit;
+using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    public class TestSceneManiaHitObjectComposer : EditorClockTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(ManiaBlueprintContainer)
+        };
+
+        private TestComposer composer;
+
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            BeatDivisor.Value = 8;
+            Clock.Seek(0);
+
+            Child = composer = new TestComposer { RelativeSizeAxes = Axes.Both };
+        });
+
+        [Test]
+        public void TestDragOffscreenSelectionVerticallyUpScroll()
+        {
+            DrawableHitObject lastObject = null;
+            Vector2 originalPosition = Vector2.Zero;
+
+            setScrollStep(ScrollingDirection.Up);
+
+            AddStep("seek to last object", () =>
+            {
+                lastObject = this.ChildrenOfType<DrawableHitObject>().Single(d => d.HitObject == composer.EditorBeatmap.HitObjects.Last());
+                Clock.Seek(composer.EditorBeatmap.HitObjects.Last().StartTime);
+            });
+
+            AddStep("select all objects", () => composer.EditorBeatmap.SelectedHitObjects.AddRange(composer.EditorBeatmap.HitObjects));
+
+            AddStep("click last object", () =>
+            {
+                originalPosition = lastObject.DrawPosition;
+
+                InputManager.MoveMouseTo(lastObject);
+                InputManager.PressButton(MouseButton.Left);
+            });
+
+            AddStep("move mouse downwards", () =>
+            {
+                InputManager.MoveMouseTo(lastObject, new Vector2(0, 20));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            AddAssert("hitobjects not moved columns", () => composer.EditorBeatmap.HitObjects.All(h => ((ManiaHitObject)h).Column == 0));
+            AddAssert("hitobjects moved downwards", () => lastObject.DrawPosition.Y - originalPosition.Y > 0);
+            AddAssert("hitobjects not moved too far", () => lastObject.DrawPosition.Y - originalPosition.Y < 50);
+        }
+
+        [Test]
+        public void TestDragOffscreenSelectionVerticallyDownScroll()
+        {
+            DrawableHitObject lastObject = null;
+            Vector2 originalPosition = Vector2.Zero;
+
+            setScrollStep(ScrollingDirection.Down);
+
+            AddStep("seek to last object", () =>
+            {
+                lastObject = this.ChildrenOfType<DrawableHitObject>().Single(d => d.HitObject == composer.EditorBeatmap.HitObjects.Last());
+                Clock.Seek(composer.EditorBeatmap.HitObjects.Last().StartTime);
+            });
+
+            AddStep("select all objects", () => composer.EditorBeatmap.SelectedHitObjects.AddRange(composer.EditorBeatmap.HitObjects));
+
+            AddStep("click last object", () =>
+            {
+                originalPosition = lastObject.DrawPosition;
+
+                InputManager.MoveMouseTo(lastObject);
+                InputManager.PressButton(MouseButton.Left);
+            });
+
+            AddStep("move mouse upwards", () =>
+            {
+                InputManager.MoveMouseTo(lastObject, new Vector2(0, -20));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            AddAssert("hitobjects not moved columns", () => composer.EditorBeatmap.HitObjects.All(h => ((ManiaHitObject)h).Column == 0));
+            AddAssert("hitobjects moved upwards", () => originalPosition.Y - lastObject.DrawPosition.Y > 0);
+            AddAssert("hitobjects not moved too far", () => originalPosition.Y - lastObject.DrawPosition.Y < 50);
+        }
+
+        [Test]
+        public void TestDragOffscreenSelectionHorizontally()
+        {
+            DrawableHitObject lastObject = null;
+            Vector2 originalPosition = Vector2.Zero;
+
+            setScrollStep(ScrollingDirection.Down);
+
+            AddStep("seek to last object", () =>
+            {
+                lastObject = this.ChildrenOfType<DrawableHitObject>().Single(d => d.HitObject == composer.EditorBeatmap.HitObjects.Last());
+                Clock.Seek(composer.EditorBeatmap.HitObjects.Last().StartTime);
+            });
+
+            AddStep("select all objects", () => composer.EditorBeatmap.SelectedHitObjects.AddRange(composer.EditorBeatmap.HitObjects));
+
+            AddStep("click last object", () =>
+            {
+                originalPosition = lastObject.DrawPosition;
+
+                InputManager.MoveMouseTo(lastObject);
+                InputManager.PressButton(MouseButton.Left);
+            });
+
+            AddStep("move mouse right", () =>
+            {
+                var firstColumn = composer.Composer.Playfield.GetColumn(0);
+                var secondColumn = composer.Composer.Playfield.GetColumn(1);
+
+                InputManager.MoveMouseTo(lastObject, new Vector2(secondColumn.ScreenSpaceDrawQuad.Centre.X - firstColumn.ScreenSpaceDrawQuad.Centre.X + 1, 0));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            AddAssert("hitobjects moved columns", () => composer.EditorBeatmap.HitObjects.All(h => ((ManiaHitObject)h).Column == 1));
+
+            // Todo: They'll move vertically by the height of a note since there's no snapping and the selection point is the middle of the note.
+            AddAssert("hitobjects not moved vertically", () => lastObject.DrawPosition.Y - originalPosition.Y <= DefaultNotePiece.NOTE_HEIGHT);
+        }
+
+        [Test]
+        public void TestDragHoldNoteSelectionVertically()
+        {
+            setScrollStep(ScrollingDirection.Down);
+
+            AddStep("setup beatmap", () =>
+            {
+                composer.EditorBeatmap.Clear();
+                composer.EditorBeatmap.Add(new HoldNote
+                {
+                    Column = 1,
+                    EndTime = 200
+                });
+            });
+
+            DrawableHoldNote holdNote = null;
+
+            AddStep("grab hold note", () =>
+            {
+                holdNote = this.ChildrenOfType<DrawableHoldNote>().Single();
+                InputManager.MoveMouseTo(holdNote);
+                InputManager.PressButton(MouseButton.Left);
+            });
+
+            AddStep("move drag upwards", () =>
+            {
+                InputManager.MoveMouseTo(holdNote, new Vector2(0, -100));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            AddAssert("head note positioned correctly", () => Precision.AlmostEquals(holdNote.ScreenSpaceDrawQuad.BottomLeft, holdNote.Head.ScreenSpaceDrawQuad.BottomLeft));
+            AddAssert("tail note positioned correctly", () => Precision.AlmostEquals(holdNote.ScreenSpaceDrawQuad.TopLeft, holdNote.Tail.ScreenSpaceDrawQuad.BottomLeft));
+
+            AddAssert("head blueprint positioned correctly", () => this.ChildrenOfType<HoldNoteNoteSelectionBlueprint>().ElementAt(0).DrawPosition == holdNote.Head.DrawPosition);
+            AddAssert("tail blueprint positioned correctly", () => this.ChildrenOfType<HoldNoteNoteSelectionBlueprint>().ElementAt(1).DrawPosition == holdNote.Tail.DrawPosition);
+        }
+
+        private void setScrollStep(ScrollingDirection direction)
+            => AddStep($"set scroll direction = {direction}", () => ((Bindable<ScrollingDirection>)composer.Composer.ScrollingInfo.Direction).Value = direction);
+
+        private class TestComposer : CompositeDrawable
+        {
+            [Cached(typeof(EditorBeatmap))]
+            [Cached(typeof(IBeatSnapProvider))]
+            public readonly EditorBeatmap EditorBeatmap;
+
+            public readonly ManiaHitObjectComposer Composer;
+
+            public TestComposer()
+            {
+                InternalChildren = new Drawable[]
+                {
+                    EditorBeatmap = new EditorBeatmap(new ManiaBeatmap(new StageDefinition { Columns = 4 }))
+                    {
+                        BeatmapInfo = { Ruleset = new ManiaRuleset().RulesetInfo }
+                    },
+                    Composer = new ManiaHitObjectComposer(new ManiaRuleset())
+                };
+
+                for (int i = 0; i < 10; i++)
+                    EditorBeatmap.Add(new Note { StartTime = 100 * i });
+            }
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/TestSceneNotePlacementBlueprint.cs

@@ -1,17 +1,59 @@
 // 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.Linq;
+using NUnit.Framework;
+using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Framework.Testing;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Tests
 {
     public class TestSceneNotePlacementBlueprint : ManiaPlacementBlueprintTestScene
     {
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            this.ChildrenOfType<HitObjectContainer>().ForEach(c => c.Clear());
+
+            ResetPlacement();
+
+            ((ScrollingTestContainer)HitObjectContainer).Direction = ScrollingDirection.Down;
+        });
+
+        [Test]
+        public void TestPlaceBeforeCurrentTimeDownwards()
+        {
+            AddStep("move mouse before current time", () => InputManager.MoveMouseTo(this.ChildrenOfType<Column>().Single().ScreenSpaceDrawQuad.BottomLeft - new Vector2(0, 10)));
+
+            AddStep("click", () => InputManager.Click(MouseButton.Left));
+
+            AddAssert("note start time < 0", () => getNote().StartTime < 0);
+        }
+
+        [Test]
+        public void TestPlaceAfterCurrentTimeDownwards()
+        {
+            AddStep("move mouse after current time", () => InputManager.MoveMouseTo(this.ChildrenOfType<Column>().Single()));
+
+            AddStep("click", () => InputManager.Click(MouseButton.Left));
+
+            AddAssert("note start time > 0", () => getNote().StartTime > 0);
+        }
+
+        private Note getNote() => this.ChildrenOfType<DrawableNote>().FirstOrDefault()?.HitObject;
+
         protected override DrawableHitObject CreateHitObject(HitObject hitObject) => new DrawableNote((Note)hitObject);
         protected override PlacementBlueprint CreateBlueprint() => new NotePlacementBlueprint();
     }

osu.Game.Rulesets.Mania.Tests/TestSceneStage.cs

@@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         [Cached(typeof(IReadOnlyList<Mod>))]
         private IReadOnlyList<Mod> mods { get; set; } = Array.Empty<Mod>();
 
-        private readonly List<ManiaStage> stages = new List<ManiaStage>();
+        private readonly List<Stage> stages = new List<Stage>();
 
         private FillFlowContainer<ScrollingTestContainer> fill;
 
@@ -81,9 +81,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             AddAssert("check bar anchors", () => barsInStageAreAnchored(stages[1], Anchor.TopCentre));
         }
 
-        private bool notesInStageAreAnchored(ManiaStage stage, Anchor anchor) => stage.Columns.SelectMany(c => c.AllHitObjects).All(o => o.Anchor == anchor);
+        private bool notesInStageAreAnchored(Stage stage, Anchor anchor) => stage.Columns.SelectMany(c => c.AllHitObjects).All(o => o.Anchor == anchor);
 
-        private bool barsInStageAreAnchored(ManiaStage stage, Anchor anchor) => stage.AllHitObjects.Where(obj => obj is DrawableBarLine).All(o => o.Anchor == anchor);
+        private bool barsInStageAreAnchored(Stage stage, Anchor anchor) => stage.AllHitObjects.Where(obj => obj is DrawableBarLine).All(o => o.Anchor == anchor);
 
         private void createNote()
         {
@@ -133,7 +133,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         {
             var specialAction = ManiaAction.Special1;
 
-            var stage = new ManiaStage(0, new StageDefinition { Columns = 2 }, ref action, ref specialAction);
+            var stage = new Stage(0, new StageDefinition { Columns = 2 }, ref action, ref specialAction);
             stages.Add(stage);
 
             return new ScrollingTestContainer(direction)

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs

@@ -13,7 +13,6 @@ using osu.Game.Rulesets.Mania.Beatmaps.Patterns;
 using osu.Game.Rulesets.Mania.MathUtils;
 using osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy;
 using osuTK;
-using osu.Game.Audio;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps
 {
@@ -47,7 +46,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             {
                 TargetColumns = (int)Math.Max(1, roundedCircleSize);
 
-                if (TargetColumns >= 10)
+                if (TargetColumns > ManiaRuleset.MAX_STAGE_KEYS)
                 {
                     TargetColumns /= 2;
                     Dual = true;
@@ -67,7 +66,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             }
         }
 
-        public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition || h is ManiaHitObject);
+        public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
 
         protected override Beatmap<ManiaHitObject> ConvertBeatmap(IBeatmap original)
         {
@@ -239,8 +238,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                         StartTime = HitObject.StartTime,
                         Duration = endTimeData.Duration,
                         Column = column,
-                        Head = { Samples = sampleInfoListAt(HitObject.StartTime) },
-                        Tail = { Samples = sampleInfoListAt(endTimeData.EndTime) },
+                        Samples = HitObject.Samples,
+                        NodeSamples = (HitObject as IHasRepeats)?.NodeSamples
                     });
                 }
                 else if (HitObject is IHasXPosition)
@@ -255,22 +254,6 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 return pattern;
             }
-
-            /// <summary>
-            /// Retrieves the sample info list at a point in time.
-            /// </summary>
-            /// <param name="time">The time to retrieve the sample info list from.</param>
-            /// <returns></returns>
-            private IList<HitSampleInfo> sampleInfoListAt(double time)
-            {
-                if (!(HitObject is IHasCurve curveData))
-                    return HitObject.Samples;
-
-                double segmentTime = (curveData.EndTime - HitObject.StartTime) / curveData.SpanCount();
-
-                int index = (int)(segmentTime == 0 ? 0 : (time - HitObject.StartTime) / segmentTime);
-                return curveData.NodeSamples[index];
-            }
         }
     }
 }

osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs

@@ -505,16 +505,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             }
             else
             {
-                var holdNote = new HoldNote
+                newObject = new HoldNote
                 {
                     StartTime = startTime,
-                    Column = column,
                     Duration = endTime - startTime,
-                    Head = { Samples = sampleInfoListAt(startTime) },
-                    Tail = { Samples = sampleInfoListAt(endTime) }
+                    Column = column,
+                    Samples = HitObject.Samples,
+                    NodeSamples = (HitObject as IHasRepeats)?.NodeSamples
                 };
-
-                newObject = holdNote;
             }
 
             pattern.Add(newObject);

osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/EndTimeObjectPatternGenerator.cs

@@ -64,21 +64,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             if (holdNote)
             {
-                var hold = new HoldNote
+                newObject = new HoldNote
                 {
                     StartTime = HitObject.StartTime,
+                    Duration = endTime - HitObject.StartTime,
                     Column = column,
-                    Duration = endTime - HitObject.StartTime
+                    Samples = HitObject.Samples,
+                    NodeSamples = (HitObject as IHasRepeats)?.NodeSamples
                 };
-
-                if (hold.Head.Samples == null)
-                    hold.Head.Samples = new List<HitSampleInfo>();
-
-                hold.Head.Samples.Add(new HitSampleInfo { Name = HitSampleInfo.HIT_NORMAL });
-
-                hold.Tail.Samples = HitObject.Samples;
-
-                newObject = hold;
             }
             else
             {

osu.Game.Rulesets.Mania/DualStageVariantGenerator.cs

@@ -0,0 +1,64 @@
+// 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 osu.Framework.Input.Bindings;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class DualStageVariantGenerator
+    {
+        private readonly int singleStageVariant;
+        private readonly InputKey[] stage1LeftKeys;
+        private readonly InputKey[] stage1RightKeys;
+        private readonly InputKey[] stage2LeftKeys;
+        private readonly InputKey[] stage2RightKeys;
+
+        public DualStageVariantGenerator(int singleStageVariant)
+        {
+            this.singleStageVariant = singleStageVariant;
+
+            // 10K is special because it expands towards the centre of the keyboard (VM/BN), rather than towards the edges of the keyboard.
+            if (singleStageVariant == 10)
+            {
+                stage1LeftKeys = new[] { InputKey.Q, InputKey.W, InputKey.E, InputKey.R, InputKey.V };
+                stage1RightKeys = new[] { InputKey.M, InputKey.I, InputKey.O, InputKey.P, InputKey.BracketLeft };
+
+                stage2LeftKeys = new[] { InputKey.S, InputKey.D, InputKey.F, InputKey.G, InputKey.B };
+                stage2RightKeys = new[] { InputKey.N, InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+            else
+            {
+                stage1LeftKeys = new[] { InputKey.Q, InputKey.W, InputKey.E, InputKey.R };
+                stage1RightKeys = new[] { InputKey.I, InputKey.O, InputKey.P, InputKey.BracketLeft };
+
+                stage2LeftKeys = new[] { InputKey.S, InputKey.D, InputKey.F, InputKey.G };
+                stage2RightKeys = new[] { InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+        }
+
+        public IEnumerable<KeyBinding> GenerateMappings()
+        {
+            var stage1Bindings = new VariantMappingGenerator
+            {
+                LeftKeys = stage1LeftKeys,
+                RightKeys = stage1RightKeys,
+                SpecialKey = InputKey.V,
+                SpecialAction = ManiaAction.Special1,
+                NormalActionStart = ManiaAction.Key1
+            }.GenerateKeyBindingsFor(singleStageVariant, out var nextNormal);
+
+            var stage2Bindings = new VariantMappingGenerator
+            {
+                LeftKeys = stage2LeftKeys,
+                RightKeys = stage2RightKeys,
+                SpecialKey = InputKey.B,
+                SpecialAction = ManiaAction.Special2,
+                NormalActionStart = nextNormal
+            }.GenerateKeyBindingsFor(singleStageVariant, out _);
+
+            return stage1Bindings.Concat(stage2Bindings);
+        }
+    }
+}

osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNotePlacementBlueprint.cs

@@ -3,9 +3,11 @@
 
 using System;
 using osu.Framework.Graphics;
+using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
 using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
@@ -46,6 +48,15 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             bodyPiece.Height = (bottomPosition - topPosition).Y;
         }
 
+        protected override void OnMouseUp(MouseUpEvent e)
+        {
+            if (e.Button != MouseButton.Left)
+                return;
+
+            base.OnMouseUp(e);
+            EndPlacement(true);
+        }
+
         private double originalStartTime;
 
         public override void UpdatePosition(Vector2 screenSpacePosition)

osu.Game.Rulesets.Mania/Edit/Blueprints/HoldNoteSelectionBlueprint.cs

@@ -45,6 +45,7 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
                 new Container
                 {
                     RelativeSizeAxes = Axes.Both,
+                    Masking = true,
                     BorderThickness = 1,
                     BorderColour = colours.Yellow,
                     Child = new Box
@@ -75,5 +76,7 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
         }
 
         public override Quad SelectionQuad => ScreenSpaceDrawQuad;
+
+        public override Vector2 SelectionPoint => DrawableObject.Head.ScreenSpaceDrawQuad.Centre;
     }
 }

osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaPlacementBlueprint.cs

@@ -11,6 +11,7 @@ using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
@@ -46,20 +47,17 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 
         protected override bool OnMouseDown(MouseDownEvent e)
         {
+            if (e.Button != MouseButton.Left)
+                return false;
+
             if (Column == null)
                 return base.OnMouseDown(e);
 
             HitObject.Column = Column.Index;
-            BeginPlacement(TimeAt(e.ScreenSpaceMousePosition));
+            BeginPlacement(TimeAt(e.ScreenSpaceMousePosition), true);
             return true;
         }
 
-        protected override void OnMouseUp(MouseUpEvent e)
-        {
-            EndPlacement(true);
-            base.OnMouseUp(e);
-        }
-
         public override void UpdatePosition(Vector2 screenSpacePosition)
         {
             if (!PlacementActive)

osu.Game.Rulesets.Mania/Edit/Blueprints/ManiaSelectionBlueprint.cs

@@ -3,8 +3,6 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Input.Events;
-using osu.Framework.Timing;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -15,13 +13,8 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
     public class ManiaSelectionBlueprint : OverlaySelectionBlueprint
     {
-        public Vector2 ScreenSpaceDragPosition { get; private set; }
-        public Vector2 DragPosition { get; private set; }
-
         public new DrawableManiaHitObject DrawableObject => (DrawableManiaHitObject)base.DrawableObject;
 
-        protected IClock EditorClock { get; private set; }
-
         [Resolved]
         private IScrollingInfo scrollingInfo { get; set; }
 
@@ -34,12 +27,6 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             RelativeSizeAxes = Axes.None;
         }
 
-        [BackgroundDependencyLoader]
-        private void load(IAdjustableClock clock)
-        {
-            EditorClock = clock;
-        }
-
         protected override void Update()
         {
             base.Update();
@@ -47,22 +34,6 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             Position = Parent.ToLocalSpace(DrawableObject.ToScreenSpace(Vector2.Zero));
         }
 
-        protected override bool OnMouseDown(MouseDownEvent e)
-        {
-            ScreenSpaceDragPosition = e.ScreenSpaceMousePosition;
-            DragPosition = DrawableObject.ToLocalSpace(e.ScreenSpaceMousePosition);
-
-            return base.OnMouseDown(e);
-        }
-
-        protected override void OnDrag(DragEvent e)
-        {
-            base.OnDrag(e);
-
-            ScreenSpaceDragPosition = e.ScreenSpaceMousePosition;
-            DragPosition = DrawableObject.ToLocalSpace(e.ScreenSpaceMousePosition);
-        }
-
         public override void Show()
         {
             DrawableObject.AlwaysAlive = true;

osu.Game.Rulesets.Mania/Edit/Blueprints/NotePlacementBlueprint.cs

@@ -2,8 +2,10 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
+using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
@@ -26,5 +28,18 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             Width = SnappedWidth;
             Position = SnappedMousePosition;
         }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            if (e.Button != MouseButton.Left)
+                return false;
+
+            base.OnMouseDown(e);
+
+            // Place the note immediately.
+            EndPlacement(true);
+
+            return true;
+        }
     }
 }

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

@@ -30,5 +30,7 @@ namespace osu.Game.Rulesets.Mania.Edit
 
             return base.CreateBlueprintFor(hitObject);
         }
+
+        protected override SelectionHandler CreateSelectionHandler() => new ManiaSelectionHandler();
     }
 }

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

@@ -10,6 +10,7 @@ using osu.Framework.Allocation;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit.Compose.Components;
 using osuTK;
 
@@ -37,7 +38,33 @@ namespace osu.Game.Rulesets.Mania.Edit
         protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent)
             => dependencies = new DependencyContainer(base.CreateChildDependencies(parent));
 
-        public int TotalColumns => ((ManiaPlayfield)drawableRuleset.Playfield).TotalColumns;
+        public ManiaPlayfield Playfield => ((ManiaPlayfield)drawableRuleset.Playfield);
+
+        public IScrollingInfo ScrollingInfo => drawableRuleset.ScrollingInfo;
+
+        public int TotalColumns => Playfield.TotalColumns;
+
+        public override (Vector2 position, double time) GetSnappedPosition(Vector2 position, double time)
+        {
+            var hoc = Playfield.GetColumn(0).HitObjectContainer;
+
+            float targetPosition = hoc.ToLocalSpace(ToScreenSpace(position)).Y;
+
+            if (drawableRuleset.ScrollingInfo.Direction.Value == ScrollingDirection.Down)
+            {
+                // We're dealing with screen coordinates in which the position decreases towards the centre of the screen resulting in an increase in start time.
+                // The scrolling algorithm instead assumes a top anchor meaning an increase in time corresponds to an increase in position,
+                // so when scrolling downwards the coordinates need to be flipped.
+                targetPosition = hoc.DrawHeight - targetPosition;
+            }
+
+            double targetTime = drawableRuleset.ScrollingInfo.Algorithm.TimeAt(targetPosition,
+                EditorClock.CurrentTime,
+                drawableRuleset.ScrollingInfo.TimeRange.Value,
+                hoc.DrawHeight);
+
+            return base.GetSnappedPosition(position, targetTime);
+        }
 
         protected override DrawableRuleset<ManiaHitObject> CreateDrawableRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
         {

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

@@ -4,11 +4,8 @@
 using System;
 using System.Linq;
 using osu.Framework.Allocation;
-using osu.Framework.Timing;
-using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
 using osu.Game.Rulesets.Mania.Objects;
-using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit.Compose.Components;
 
@@ -22,85 +19,16 @@ namespace osu.Game.Rulesets.Mania.Edit
         [Resolved]
         private IManiaHitObjectComposer composer { get; set; }
 
-        private IClock editorClock;
-
-        [BackgroundDependencyLoader]
-        private void load(IAdjustableClock clock)
-        {
-            editorClock = clock;
-        }
-
         public override bool HandleMovement(MoveSelectionEvent moveEvent)
         {
             var maniaBlueprint = (ManiaSelectionBlueprint)moveEvent.Blueprint;
             int lastColumn = maniaBlueprint.DrawableObject.HitObject.Column;
 
-            adjustOrigins(maniaBlueprint);
-            performDragMovement(moveEvent);
             performColumnMovement(lastColumn, moveEvent);
 
             return true;
         }
 
-        /// <summary>
-        /// Ensures that the position of hitobjects remains centred to the mouse position.
-        /// E.g. The hitobject position will change if the editor scrolls while a hitobject is dragged.
-        /// </summary>
-        /// <param name="reference">The <see cref="ManiaSelectionBlueprint"/> that received the drag event.</param>
-        private void adjustOrigins(ManiaSelectionBlueprint reference)
-        {
-            var referenceParent = (HitObjectContainer)reference.DrawableObject.Parent;
-
-            float offsetFromReferenceOrigin = reference.DragPosition.Y - reference.DrawableObject.OriginPosition.Y;
-            float targetPosition = referenceParent.ToLocalSpace(reference.ScreenSpaceDragPosition).Y - offsetFromReferenceOrigin;
-
-            // Flip the vertical coordinate space when scrolling downwards
-            if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
-                targetPosition -= referenceParent.DrawHeight;
-
-            float movementDelta = targetPosition - reference.DrawableObject.Position.Y;
-
-            foreach (var b in SelectedBlueprints.OfType<ManiaSelectionBlueprint>())
-                b.DrawableObject.Y += movementDelta;
-        }
-
-        private void performDragMovement(MoveSelectionEvent moveEvent)
-        {
-            float delta = moveEvent.InstantDelta.Y;
-
-            // When scrolling downwards the anchor position is at the bottom of the screen, however the movement event assumes the anchor is at the top of the screen.
-            // This causes the delta to assume a positive hitobject position, and which can be corrected for by subtracting the parent height.
-            if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
-                delta -= moveEvent.Blueprint.Parent.DrawHeight; // todo: probably wrong
-
-            foreach (var selectionBlueprint in SelectedBlueprints)
-            {
-                var b = (OverlaySelectionBlueprint)selectionBlueprint;
-
-                var hitObject = b.DrawableObject;
-                var objectParent = (HitObjectContainer)hitObject.Parent;
-
-                // StartTime could be used to adjust the position if only one movement event was received per frame.
-                // However this is not the case and ScrollingHitObjectContainer performs movement in UpdateAfterChildren() so the position must also be updated to be valid for further movement events
-                hitObject.Y += delta;
-
-                float targetPosition = hitObject.Position.Y;
-
-                // The scrolling algorithm always assumes an anchor at the top of the screen, so the position must be flipped when scrolling downwards to reflect a top anchor
-                if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
-                    targetPosition = -targetPosition;
-
-                objectParent.Remove(hitObject);
-
-                hitObject.HitObject.StartTime = scrollingInfo.Algorithm.TimeAt(targetPosition,
-                    editorClock.CurrentTime,
-                    scrollingInfo.TimeRange.Value,
-                    objectParent.DrawHeight);
-
-                objectParent.Add(hitObject);
-            }
-        }
-
         private void performColumnMovement(int lastColumn, MoveSelectionEvent moveEvent)
         {
             var currentColumn = composer.ColumnAt(moveEvent.ScreenSpacePosition);

osu.Game.Rulesets.Mania/Edit/Masks/ManiaSelectionBlueprint.cs

@@ -1,18 +0,0 @@
-// 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;
-using osu.Game.Rulesets.Edit;
-using osu.Game.Rulesets.Objects.Drawables;
-
-namespace osu.Game.Rulesets.Mania.Edit.Masks
-{
-    public abstract class ManiaSelectionBlueprint : OverlaySelectionBlueprint
-    {
-        protected ManiaSelectionBlueprint(DrawableHitObject drawableObject)
-            : base(drawableObject)
-        {
-            RelativeSizeAxes = Axes.None;
-        }
-    }
-}

osu.Game.Rulesets.Mania/ManiaInputManager.cs

@@ -78,5 +78,11 @@ namespace osu.Game.Rulesets.Mania
 
         [Description("Key 18")]
         Key18,
+
+        [Description("Key 19")]
+        Key19,
+
+        [Description("Key 20")]
+        Key20,
     }
 }

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -35,6 +35,11 @@ namespace osu.Game.Rulesets.Mania
 {
     public class ManiaRuleset : Ruleset, ILegacyRuleset
     {
+        /// <summary>
+        /// The maximum number of supported keys in a single stage.
+        /// </summary>
+        public const int MAX_STAGE_KEYS = 10;
+
         public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod> mods = null) => new DrawableManiaRuleset(this, beatmap, mods);
 
         public override ScoreProcessor CreateScoreProcessor() => new ManiaScoreProcessor();
@@ -202,6 +207,7 @@ namespace osu.Game.Rulesets.Mania
                             new ManiaModKey7(),
                             new ManiaModKey8(),
                             new ManiaModKey9(),
+                            new ManiaModKey10(),
                             new ManiaModKey1(),
                             new ManiaModKey2(),
                             new ManiaModKey3()),
@@ -250,9 +256,9 @@ namespace osu.Game.Rulesets.Mania
         {
             get
             {
-                for (int i = 1; i <= 9; i++)
+                for (int i = 1; i <= MAX_STAGE_KEYS; i++)
                     yield return (int)PlayfieldType.Single + i;
-                for (int i = 2; i <= 18; i += 2)
+                for (int i = 2; i <= MAX_STAGE_KEYS * 2; i += 2)
                     yield return (int)PlayfieldType.Dual + i;
             }
         }
@@ -262,73 +268,10 @@ namespace osu.Game.Rulesets.Mania
             switch (getPlayfieldType(variant))
             {
                 case PlayfieldType.Single:
-                    return new VariantMappingGenerator
-                    {
-                        LeftKeys = new[]
-                        {
-                            InputKey.A,
-                            InputKey.S,
-                            InputKey.D,
-                            InputKey.F
-                        },
-                        RightKeys = new[]
-                        {
-                            InputKey.J,
-                            InputKey.K,
-                            InputKey.L,
-                            InputKey.Semicolon
-                        },
-                        SpecialKey = InputKey.Space,
-                        SpecialAction = ManiaAction.Special1,
-                        NormalActionStart = ManiaAction.Key1,
-                    }.GenerateKeyBindingsFor(variant, out _);
+                    return new SingleStageVariantGenerator(variant).GenerateMappings();
 
                 case PlayfieldType.Dual:
-                    int keys = getDualStageKeyCount(variant);
-
-                    var stage1Bindings = new VariantMappingGenerator
-                    {
-                        LeftKeys = new[]
-                        {
-                            InputKey.Q,
-                            InputKey.W,
-                            InputKey.E,
-                            InputKey.R,
-                        },
-                        RightKeys = new[]
-                        {
-                            InputKey.X,
-                            InputKey.C,
-                            InputKey.V,
-                            InputKey.B
-                        },
-                        SpecialKey = InputKey.S,
-                        SpecialAction = ManiaAction.Special1,
-                        NormalActionStart = ManiaAction.Key1
-                    }.GenerateKeyBindingsFor(keys, out var nextNormal);
-
-                    var stage2Bindings = new VariantMappingGenerator
-                    {
-                        LeftKeys = new[]
-                        {
-                            InputKey.Number7,
-                            InputKey.Number8,
-                            InputKey.Number9,
-                            InputKey.Number0
-                        },
-                        RightKeys = new[]
-                        {
-                            InputKey.K,
-                            InputKey.L,
-                            InputKey.Semicolon,
-                            InputKey.Quote
-                        },
-                        SpecialKey = InputKey.I,
-                        SpecialAction = ManiaAction.Special2,
-                        NormalActionStart = nextNormal
-                    }.GenerateKeyBindingsFor(keys, out _);
-
-                    return stage1Bindings.Concat(stage2Bindings);
+                    return new DualStageVariantGenerator(getDualStageKeyCount(variant)).GenerateMappings();
             }
 
             return Array.Empty<KeyBinding>();
@@ -364,59 +307,6 @@ namespace osu.Game.Rulesets.Mania
         {
             return (PlayfieldType)Enum.GetValues(typeof(PlayfieldType)).Cast<int>().OrderByDescending(i => i).First(v => variant >= v);
         }
-
-        private class VariantMappingGenerator
-        {
-            /// <summary>
-            /// All the <see cref="InputKey"/>s available to the left hand.
-            /// </summary>
-            public InputKey[] LeftKeys;
-
-            /// <summary>
-            /// All the <see cref="InputKey"/>s available to the right hand.
-            /// </summary>
-            public InputKey[] RightKeys;
-
-            /// <summary>
-            /// The <see cref="InputKey"/> for the special key.
-            /// </summary>
-            public InputKey SpecialKey;
-
-            /// <summary>
-            /// The <see cref="ManiaAction"/> at which the normal columns should begin.
-            /// </summary>
-            public ManiaAction NormalActionStart;
-
-            /// <summary>
-            /// The <see cref="ManiaAction"/> for the special column.
-            /// </summary>
-            public ManiaAction SpecialAction;
-
-            /// <summary>
-            /// Generates a list of <see cref="KeyBinding"/>s for a specific number of columns.
-            /// </summary>
-            /// <param name="columns">The number of columns that need to be bound.</param>
-            /// <param name="nextNormalAction">The next <see cref="ManiaAction"/> to use for normal columns.</param>
-            /// <returns>The keybindings.</returns>
-            public IEnumerable<KeyBinding> GenerateKeyBindingsFor(int columns, out ManiaAction nextNormalAction)
-            {
-                ManiaAction currentNormalAction = NormalActionStart;
-
-                var bindings = new List<KeyBinding>();
-
-                for (int i = LeftKeys.Length - columns / 2; i < LeftKeys.Length; i++)
-                    bindings.Add(new KeyBinding(LeftKeys[i], currentNormalAction++));
-
-                if (columns % 2 == 1)
-                    bindings.Add(new KeyBinding(SpecialKey, SpecialAction));
-
-                for (int i = 0; i < columns / 2; i++)
-                    bindings.Add(new KeyBinding(RightKeys[i], currentNormalAction++));
-
-                nextNormalAction = currentNormalAction;
-                return bindings;
-            }
-        }
     }
 
     public enum PlayfieldType

osu.Game.Rulesets.Mania/ManiaSkinComponent.cs

@@ -39,6 +39,8 @@ namespace osu.Game.Rulesets.Mania
         HoldNoteHead,
         HoldNoteTail,
         HoldNoteBody,
-        HitExplosion
+        HitExplosion,
+        StageBackground,
+        StageForeground,
     }
 }

osu.Game.Rulesets.Mania/Mods/ManiaModKey10.cs

@@ -0,0 +1,13 @@
+// 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.
+
+namespace osu.Game.Rulesets.Mania.Mods
+{
+    public class ManiaModKey10 : ManiaKeyMod
+    {
+        public override int KeyCount => 10;
+        public override string Name => "Ten Keys";
+        public override string Acronym => "10K";
+        public override string Description => @"Play with ten keys.";
+    }
+}

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

@@ -51,7 +51,10 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
             AddRangeInternal(new[]
             {
-                bodyPiece = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.HoldNoteBody, hitObject.Column), _ => new DefaultBodyPiece())
+                bodyPiece = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.HoldNoteBody, hitObject.Column), _ => new DefaultBodyPiece
+                {
+                    RelativeSizeAxes = Axes.Both
+                })
                 {
                     RelativeSizeAxes = Axes.X
                 },
@@ -127,6 +130,11 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             bodyPiece.Anchor = bodyPiece.Origin = e.NewValue == ScrollingDirection.Up ? Anchor.TopLeft : Anchor.BottomLeft;
         }
 
+        public override void PlaySamples()
+        {
+            // Samples are played by the head/tail notes.
+        }
+
         protected override void Update()
         {
             base.Update();

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

@@ -7,16 +7,12 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Rulesets.Mania.UI;
 
 namespace osu.Game.Rulesets.Mania.Objects.Drawables
 {
     public abstract class DrawableManiaHitObject : DrawableHitObject<ManiaHitObject>
     {
-        /// <summary>
-        /// Whether this <see cref="DrawableManiaHitObject"/> should always remain alive.
-        /// </summary>
-        internal bool AlwaysAlive;
-
         /// <summary>
         /// The <see cref="ManiaAction"/> which causes this <see cref="DrawableManiaHitObject{TObject}"/> to be hit.
         /// </summary>
@@ -24,6 +20,20 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
         protected readonly IBindable<ScrollingDirection> Direction = new Bindable<ScrollingDirection>();
 
+        [Resolved(canBeNull: true)]
+        private ManiaPlayfield playfield { get; set; }
+
+        protected override float SamplePlaybackPosition
+        {
+            get
+            {
+                if (playfield == null)
+                    return base.SamplePlaybackPosition;
+
+                return (float)HitObject.Column / playfield.TotalColumns;
+            }
+        }
+
         protected DrawableManiaHitObject(ManiaHitObject hitObject)
             : base(hitObject)
         {
@@ -39,7 +49,62 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
             Direction.BindValueChanged(OnDirectionChanged, true);
         }
 
-        protected override bool ShouldBeAlive => AlwaysAlive || base.ShouldBeAlive;
+        private double computedLifetimeStart;
+
+        public override double LifetimeStart
+        {
+            get => base.LifetimeStart;
+            set
+            {
+                computedLifetimeStart = value;
+
+                if (!AlwaysAlive)
+                    base.LifetimeStart = value;
+            }
+        }
+
+        private double computedLifetimeEnd;
+
+        public override double LifetimeEnd
+        {
+            get => base.LifetimeEnd;
+            set
+            {
+                computedLifetimeEnd = value;
+
+                if (!AlwaysAlive)
+                    base.LifetimeEnd = value;
+            }
+        }
+
+        private bool alwaysAlive;
+
+        /// <summary>
+        /// Whether this <see cref="DrawableManiaHitObject"/> should always remain alive.
+        /// </summary>
+        internal bool AlwaysAlive
+        {
+            get => alwaysAlive;
+            set
+            {
+                if (alwaysAlive == value)
+                    return;
+
+                alwaysAlive = value;
+
+                if (value)
+                {
+                    // Set the base lifetimes directly, to avoid mangling the computed lifetimes
+                    base.LifetimeStart = double.MinValue;
+                    base.LifetimeEnd = double.MaxValue;
+                }
+                else
+                {
+                    LifetimeStart = computedLifetimeStart;
+                    LifetimeEnd = computedLifetimeEnd;
+                }
+            }
+        }
 
         protected virtual void OnDirectionChanged(ValueChangedEvent<ScrollingDirection> e)
         {

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

@@ -34,7 +34,6 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables.Pieces
 
         public DefaultBodyPiece()
         {
-            RelativeSizeAxes = Axes.Both;
             Blending = BlendingParameters.Additive;
 
             AddLayout(subtractionCache);

osu.Game.Rulesets.Mania/Objects/HoldNote.cs

@@ -1,6 +1,8 @@
 // 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 osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Judgements;
@@ -28,6 +30,8 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 duration = value;
+
+                if (Tail != null)
                     Tail.StartTime = EndTime;
             }
         }
@@ -38,7 +42,11 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 base.StartTime = value;
+
+                if (Head != null)
                     Head.StartTime = value;
+
+                if (Tail != null)
                     Tail.StartTime = EndTime;
             }
         }
@@ -49,20 +57,26 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 base.Column = value;
+
+                if (Head != null)
                     Head.Column = value;
+
+                if (Tail != null)
                     Tail.Column = value;
             }
         }
 
+        public List<IList<HitSampleInfo>> NodeSamples { get; set; }
+
         /// <summary>
         /// The head note of the hold.
         /// </summary>
-        public readonly Note Head = new Note();
+        public Note Head { get; private set; }
 
         /// <summary>
         /// The tail note of the hold.
         /// </summary>
-        public readonly TailNote Tail = new TailNote();
+        public TailNote Tail { get; private set; }
 
         /// <summary>
         /// The time between ticks of this hold.
@@ -83,8 +97,19 @@ namespace osu.Game.Rulesets.Mania.Objects
 
             createTicks();
 
-            AddNested(Head);
-            AddNested(Tail);
+            AddNested(Head = new Note
+            {
+                StartTime = StartTime,
+                Column = Column,
+                Samples = getNodeSamples(0),
+            });
+
+            AddNested(Tail = new TailNote
+            {
+                StartTime = EndTime,
+                Column = Column,
+                Samples = getNodeSamples((NodeSamples?.Count - 1) ?? 1),
+            });
         }
 
         private void createTicks()
@@ -105,5 +130,8 @@ namespace osu.Game.Rulesets.Mania.Objects
         public override Judgement CreateJudgement() => new IgnoreJudgement();
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
+
+        private IList<HitSampleInfo> getNodeSamples(int nodeIndex) =>
+            nodeIndex < NodeSamples?.Count ? NodeSamples[nodeIndex] : Samples;
     }
 }

osu.Game.Rulesets.Mania/Objects/ManiaHitObject.cs

@@ -5,11 +5,12 @@ using osu.Framework.Bindables;
 using osu.Game.Rulesets.Mania.Objects.Types;
 using osu.Game.Rulesets.Mania.Scoring;
 using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Objects
 {
-    public abstract class ManiaHitObject : HitObject, IHasColumn
+    public abstract class ManiaHitObject : HitObject, IHasColumn, IHasXPosition
     {
         public readonly Bindable<int> ColumnBindable = new Bindable<int>();
 
@@ -20,5 +21,11 @@ namespace osu.Game.Rulesets.Mania.Objects
         }
 
         protected override HitWindows CreateHitWindows() => new ManiaHitWindows();
+
+        #region LegacyBeatmapEncoder
+
+        float IHasXPosition.X => Column;
+
+        #endregion
     }
 }

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

@@ -1,8 +1,8 @@
 // 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.Game.Beatmaps;
 using osu.Game.Replays.Legacy;
 using osu.Game.Rulesets.Mania.Beatmaps;
@@ -37,7 +37,7 @@ namespace osu.Game.Rulesets.Mania.Replays
 
             while (activeColumns > 0)
             {
-                var isSpecial = maniaBeatmap.Stages.First().IsSpecialColumn(counter);
+                bool isSpecial = isColumnAtIndexSpecial(maniaBeatmap, counter);
 
                 if ((activeColumns & 1) > 0)
                     Actions.Add(isSpecial ? specialAction : normalAction);
@@ -58,33 +58,87 @@ namespace osu.Game.Rulesets.Mania.Replays
 
             int keys = 0;
 
-            var specialColumns = new List<int>();
-
-            for (int i = 0; i < maniaBeatmap.TotalColumns; i++)
-            {
-                if (maniaBeatmap.Stages.First().IsSpecialColumn(i))
-                    specialColumns.Add(i);
-            }
-
             foreach (var action in Actions)
             {
                 switch (action)
                 {
                     case ManiaAction.Special1:
-                        keys |= 1 << specialColumns[0];
+                        keys |= 1 << getSpecialColumnIndex(maniaBeatmap, 0);
                         break;
 
                     case ManiaAction.Special2:
-                        keys |= 1 << specialColumns[1];
+                        keys |= 1 << getSpecialColumnIndex(maniaBeatmap, 1);
                         break;
 
                     default:
-                        keys |= 1 << (action - ManiaAction.Key1);
+                        // the index in lazer, which doesn't include special keys.
+                        int nonSpecialKeyIndex = action - ManiaAction.Key1;
+
+                        // the index inclusive of special keys.
+                        int overallIndex = 0;
+
+                        // iterate to find the index including special keys.
+                        for (; overallIndex < maniaBeatmap.TotalColumns; overallIndex++)
+                        {
+                            // skip over special columns.
+                            if (isColumnAtIndexSpecial(maniaBeatmap, overallIndex))
+                                continue;
+                            // found a non-special column to use.
+                            if (nonSpecialKeyIndex == 0)
+                                break;
+                            // found a non-special column but not ours.
+                            nonSpecialKeyIndex--;
+                        }
+
+                        keys |= 1 << overallIndex;
                         break;
                 }
             }
 
             return new LegacyReplayFrame(Time, keys, null, ReplayButtonState.None);
         }
+
+        /// <summary>
+        /// Find the overall index (across all stages) for a specified special key.
+        /// </summary>
+        /// <param name="maniaBeatmap">The beatmap.</param>
+        /// <param name="specialOffset">The special key offset (0 is S1).</param>
+        /// <returns>The overall index for the special column.</returns>
+        private int getSpecialColumnIndex(ManiaBeatmap maniaBeatmap, int specialOffset)
+        {
+            for (int i = 0; i < maniaBeatmap.TotalColumns; i++)
+            {
+                if (isColumnAtIndexSpecial(maniaBeatmap, i))
+                {
+                    if (specialOffset == 0)
+                        return i;
+
+                    specialOffset--;
+                }
+            }
+
+            throw new ArgumentException("Special key index is too high.", nameof(specialOffset));
+        }
+
+        /// <summary>
+        /// Check whether the column at an overall index (across all stages) is a special column.
+        /// </summary>
+        /// <param name="beatmap">The beatmap.</param>
+        /// <param name="index">The overall index to check.</param>
+        private bool isColumnAtIndexSpecial(ManiaBeatmap beatmap, int index)
+        {
+            foreach (var stage in beatmap.Stages)
+            {
+                if (index >= stage.Columns)
+                {
+                    index -= stage.Columns;
+                    continue;
+                }
+
+                return stage.IsSpecialColumn(index);
+            }
+
+            throw new ArgumentException("Column index is too high.", nameof(index));
+        }
     }
 }

osu.Game.Rulesets.Mania/SingleStageVariantGenerator.cs

@@ -0,0 +1,41 @@
+// 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 osu.Framework.Input.Bindings;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class SingleStageVariantGenerator
+    {
+        private readonly int variant;
+        private readonly InputKey[] leftKeys;
+        private readonly InputKey[] rightKeys;
+
+        public SingleStageVariantGenerator(int variant)
+        {
+            this.variant = variant;
+
+            // 10K is special because it expands towards the centre of the keyboard (V/N), rather than towards the edges of the keyboard.
+            if (variant == 10)
+            {
+                leftKeys = new[] { InputKey.A, InputKey.S, InputKey.D, InputKey.F, InputKey.V };
+                rightKeys = new[] { InputKey.N, InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+            else
+            {
+                leftKeys = new[] { InputKey.A, InputKey.S, InputKey.D, InputKey.F };
+                rightKeys = new[] { InputKey.J, InputKey.K, InputKey.L, InputKey.Semicolon };
+            }
+        }
+
+        public IEnumerable<KeyBinding> GenerateMappings() => new VariantMappingGenerator
+        {
+            LeftKeys = leftKeys,
+            RightKeys = rightKeys,
+            SpecialKey = InputKey.Space,
+            SpecialAction = ManiaAction.Special1,
+            NormalActionStart = ManiaAction.Key1,
+        }.GenerateKeyBindingsFor(variant, out _);
+    }
+}

osu.Game.Rulesets.Mania/Skinning/LegacyColumnBackground.cs

@@ -50,17 +50,24 @@ namespace osu.Game.Rulesets.Mania.Skinning
             Color4 lineColour = GetManiaSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnLineColour)?.Value
                                 ?? Color4.White;
 
+            Color4 backgroundColour = GetManiaSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnBackgroundColour)?.Value
+                                      ?? Color4.Black;
+
+            Color4 lightColour = GetManiaSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.ColumnLightColour)?.Value
+                                 ?? Color4.White;
+
             InternalChildren = new Drawable[]
             {
                 new Box
                 {
                     RelativeSizeAxes = Axes.Both,
-                    Colour = Color4.Black
+                    Colour = backgroundColour
                 },
                 new Box
                 {
                     RelativeSizeAxes = Axes.Y,
                     Width = leftLineWidth,
+                    Scale = new Vector2(0.740f, 1),
                     Colour = lineColour,
                     Alpha = hasLeftLine ? 1 : 0
                 },
@@ -70,6 +77,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                     Origin = Anchor.TopRight,
                     RelativeSizeAxes = Axes.Y,
                     Width = rightLineWidth,
+                    Scale = new Vector2(0.740f, 1),
                     Colour = lineColour,
                     Alpha = hasRightLine ? 1 : 0
                 },
@@ -82,6 +90,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                     {
                         Anchor = Anchor.BottomCentre,
                         Origin = Anchor.BottomCentre,
+                        Colour = lightColour,
                         Texture = skin.GetTexture(lightImage),
                         RelativeSizeAxes = Axes.X,
                         Width = 1,

osu.Game.Rulesets.Mania/Skinning/LegacyHitExplosion.cs

@@ -39,7 +39,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
             if (tmp is IFramedAnimation tmpAnimation && tmpAnimation.FrameCount > 0)
                 frameLength = Math.Max(1000 / 60.0, 170.0 / tmpAnimation.FrameCount);
 
-            explosion = skin.GetAnimation(imageName, true, false, startAtCurrentTime: true, frameLength: frameLength).With(d =>
+            explosion = skin.GetAnimation(imageName, true, false, frameLength: frameLength).With(d =>
             {
                 if (d == null)
                     return;

osu.Game.Rulesets.Mania/Skinning/LegacyHitTarget.cs

@@ -10,6 +10,7 @@ using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
 using osuTK;
+using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Skinning
 {
@@ -33,6 +34,9 @@ namespace osu.Game.Rulesets.Mania.Skinning
             bool showJudgementLine = GetManiaSkinConfig<bool>(skin, LegacyManiaSkinConfigurationLookups.ShowJudgementLine)?.Value
                                      ?? true;
 
+            Color4 lineColour = GetManiaSkinConfig<Color4>(skin, LegacyManiaSkinConfigurationLookups.JudgementLineColour)?.Value
+                                ?? Color4.White;
+
             InternalChild = directionContainer = new Container
             {
                 Origin = Anchor.CentreLeft,
@@ -52,6 +56,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                         Anchor = Anchor.CentreLeft,
                         RelativeSizeAxes = Axes.X,
                         Height = 1,
+                        Colour = lineColour,
                         Alpha = showJudgementLine ? 0.9f : 0
                     }
                 }

osu.Game.Rulesets.Mania/Skinning/LegacyNotePiece.cs

@@ -20,6 +20,8 @@ namespace osu.Game.Rulesets.Mania.Skinning
         private Container directionContainer;
         private Sprite noteSprite;
 
+        private float? minimumColumnWidth;
+
         public LegacyNotePiece()
         {
             RelativeSizeAxes = Axes.X;
@@ -29,6 +31,8 @@ namespace osu.Game.Rulesets.Mania.Skinning
         [BackgroundDependencyLoader]
         private void load(ISkinSource skin, IScrollingInfo scrollingInfo)
         {
+            minimumColumnWidth = skin.GetConfig<ManiaSkinConfigurationLookup, float>(new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.MinimumColumnWidth))?.Value;
+
             InternalChild = directionContainer = new Container
             {
                 Origin = Anchor.BottomCentre,
@@ -47,8 +51,10 @@ namespace osu.Game.Rulesets.Mania.Skinning
 
             if (noteSprite.Texture != null)
             {
-                var scale = DrawWidth / noteSprite.Texture.DisplayWidth;
-                noteSprite.Scale = new Vector2(scale);
+                // The height is scaled to the minimum column width, if provided.
+                float minimumWidth = minimumColumnWidth ?? DrawWidth;
+
+                noteSprite.Scale = Vector2.Divide(new Vector2(DrawWidth, minimumWidth), noteSprite.Texture.DisplayWidth);
             }
         }
 

osu.Game.Rulesets.Mania/Skinning/LegacyStageBackground.cs

@@ -0,0 +1,61 @@
+// 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.Sprites;
+using osu.Game.Skinning;
+using osuTK;
+
+namespace osu.Game.Rulesets.Mania.Skinning
+{
+    public class LegacyStageBackground : LegacyManiaElement
+    {
+        private Drawable leftSprite;
+        private Drawable rightSprite;
+
+        public LegacyStageBackground()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            string leftImage = GetManiaSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.LeftStageImage)?.Value
+                               ?? "mania-stage-left";
+
+            string rightImage = GetManiaSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.RightStageImage)?.Value
+                                ?? "mania-stage-right";
+
+            InternalChildren = new[]
+            {
+                leftSprite = new Sprite
+                {
+                    Anchor = Anchor.TopLeft,
+                    Origin = Anchor.TopRight,
+                    X = 0.05f,
+                    Texture = skin.GetTexture(leftImage),
+                },
+                rightSprite = new Sprite
+                {
+                    Anchor = Anchor.TopRight,
+                    Origin = Anchor.TopLeft,
+                    X = -0.05f,
+                    Texture = skin.GetTexture(rightImage)
+                }
+            };
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (leftSprite?.Height > 0)
+                leftSprite.Scale = new Vector2(DrawHeight / leftSprite.Height);
+
+            if (rightSprite?.Height > 0)
+                rightSprite.Scale = new Vector2(DrawHeight / rightSprite.Height);
+        }
+    }
+}

osu.Game.Rulesets.Mania/Skinning/LegacyStageForeground.cs

@@ -0,0 +1,56 @@
+// 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.Game.Rulesets.UI.Scrolling;
+using osu.Game.Skinning;
+using osuTK;
+
+namespace osu.Game.Rulesets.Mania.Skinning
+{
+    public class LegacyStageForeground : LegacyManiaElement
+    {
+        private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+        private Drawable sprite;
+
+        public LegacyStageForeground()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin, IScrollingInfo scrollingInfo)
+        {
+            string bottomImage = GetManiaSkinConfig<string>(skin, LegacyManiaSkinConfigurationLookups.BottomStageImage)?.Value
+                                 ?? "mania-stage-bottom";
+
+            sprite = skin.GetAnimation(bottomImage, true, true)?.With(d =>
+            {
+                if (d == null)
+                    return;
+
+                d.Scale = new Vector2(1.6f);
+            });
+
+            if (sprite != null)
+                InternalChild = sprite;
+
+            direction.BindTo(scrollingInfo.Direction);
+            direction.BindValueChanged(onDirectionChanged, true);
+        }
+
+        private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
+        {
+            if (sprite == null)
+                return;
+
+            if (direction.NewValue == ScrollingDirection.Up)
+                sprite.Anchor = sprite.Origin = Anchor.TopCentre;
+            else
+                sprite.Anchor = sprite.Origin = Anchor.BottomCentre;
+        }
+    }
+}

osu.Game.Rulesets.Mania/Skinning/ManiaLegacySkinTransformer.cs

@@ -40,7 +40,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
         {
             isLegacySkin = new Lazy<bool>(() => source.GetConfig<LegacySkinConfiguration.LegacySetting, decimal>(LegacySkinConfiguration.LegacySetting.Version) != null);
             hasKeyTexture = new Lazy<bool>(() => source.GetAnimation(
-                source.GetConfig<ManiaSkinConfigurationLookup, string>(
+                GetConfig<ManiaSkinConfigurationLookup, string>(
                     new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.KeyImage, 0))?.Value
                 ?? "mania-key1", true, true) != null);
         }
@@ -81,6 +81,12 @@ namespace osu.Game.Rulesets.Mania.Skinning
 
                         case ManiaSkinComponents.HitExplosion:
                             return new LegacyHitExplosion();
+
+                        case ManiaSkinComponents.StageBackground:
+                            return new LegacyStageBackground();
+
+                        case ManiaSkinComponents.StageForeground:
+                            return new LegacyStageForeground();
                     }
 
                     break;

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

@@ -42,6 +42,7 @@ namespace osu.Game.Rulesets.Mania.UI
             Index = index;
 
             RelativeSizeAxes = Axes.Y;
+            Width = COLUMN_WIDTH;
 
             Drawable background = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.ColumnBackground, Index), _ => new DefaultColumnBackground())
             {
@@ -138,6 +139,6 @@ namespace osu.Game.Rulesets.Mania.UI
 
         public override bool ReceivePositionalInputAt(Vector2 screenSpacePos)
             // This probably shouldn't exist as is, but the columns in the stage are separated by a 1px border
-            => DrawRectangle.Inflate(new Vector2(ManiaStage.COLUMN_SPACING / 2, 0)).Contains(ToLocalSpace(screenSpacePos));
+            => DrawRectangle.Inflate(new Vector2(Stage.COLUMN_SPACING / 2, 0)).Contains(ToLocalSpace(screenSpacePos));
     }
 }

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

@@ -41,7 +41,7 @@ namespace osu.Game.Rulesets.Mania.UI.Components
             InternalChild = directionContainer = new Container
             {
                 RelativeSizeAxes = Axes.X,
-                Height = ManiaStage.HIT_TARGET_POSITION,
+                Height = Stage.HIT_TARGET_POSITION,
                 Children = new[]
                 {
                     gradient = new Box
@@ -53,9 +53,8 @@ namespace osu.Game.Rulesets.Mania.UI.Components
                     keyIcon = new Container
                     {
                         Name = "Key icon",
-                        Anchor = Anchor.Centre,
-                        Origin = Anchor.Centre,
                         Size = new Vector2(key_icon_size),
+                        Origin = Anchor.Centre,
                         Masking = true,
                         CornerRadius = key_icon_corner_radius,
                         BorderThickness = 2,
@@ -88,11 +87,15 @@ namespace osu.Game.Rulesets.Mania.UI.Components
         {
             if (direction.NewValue == ScrollingDirection.Up)
             {
+                keyIcon.Anchor = Anchor.BottomCentre;
+                keyIcon.Y = -20;
                 directionContainer.Anchor = directionContainer.Origin = Anchor.TopLeft;
                 gradient.Colour = ColourInfo.GradientVertical(Color4.Black, Color4.Black.Opacity(0));
             }
             else
             {
+                keyIcon.Anchor = Anchor.TopCentre;
+                keyIcon.Y = 20;
                 directionContainer.Anchor = directionContainer.Origin = Anchor.BottomLeft;
                 gradient.Colour = ColourInfo.GradientVertical(Color4.Black.Opacity(0), Color4.Black);
             }

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

@@ -0,0 +1,30 @@
+// 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.Shapes;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.UI.Components
+{
+    public class DefaultStageBackground : CompositeDrawable
+    {
+        public DefaultStageBackground()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            InternalChild = new Box
+            {
+                Name = "Background",
+                RelativeSizeAxes = Axes.Both,
+                Colour = Color4.Black
+            };
+        }
+    }
+}

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

@@ -45,7 +45,7 @@ namespace osu.Game.Rulesets.Mania.UI.Components
         {
             float hitPosition = CurrentSkin.GetConfig<ManiaSkinConfigurationLookup, float>(
                                     new ManiaSkinConfigurationLookup(LegacyManiaSkinConfigurationLookups.HitPosition))?.Value
-                                ?? ManiaStage.HIT_TARGET_POSITION;
+                                ?? Stage.HIT_TARGET_POSITION;
 
             Padding = Direction.Value == ScrollingDirection.Up
                 ? new MarginPadding { Top = hitPosition }

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

@@ -2,7 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Linq;
 using osu.Framework.Allocation;
+using osu.Framework.Audio.Track;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
@@ -48,6 +50,10 @@ namespace osu.Game.Rulesets.Mania.UI
         protected new ManiaRulesetConfigManager Config => (ManiaRulesetConfigManager)base.Config;
 
         private readonly Bindable<ManiaScrollingDirection> configDirection = new Bindable<ManiaScrollingDirection>();
+        private readonly Bindable<double> configTimeRange = new BindableDouble();
+
+        // Stores the current speed adjustment active in gameplay.
+        private readonly Track speedAdjustmentTrack = new TrackVirtual(0);
 
         public DrawableManiaRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
             : base(ruleset, beatmap, mods)
@@ -58,12 +64,16 @@ namespace osu.Game.Rulesets.Mania.UI
         [BackgroundDependencyLoader]
         private void load()
         {
+            foreach (var mod in Mods.OfType<IApplicableToTrack>())
+                mod.ApplyToTrack(speedAdjustmentTrack);
+
             bool isForCurrentRuleset = Beatmap.BeatmapInfo.Ruleset.Equals(Ruleset.RulesetInfo);
 
             foreach (var p in ControlPoints)
             {
                 // Mania doesn't care about global velocity
                 p.Velocity = 1;
+                p.BaseBeatLength *= Beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier;
 
                 // For non-mania beatmap, speed changes should only happen through timing points
                 if (!isForCurrentRuleset)
@@ -75,7 +85,7 @@ namespace osu.Game.Rulesets.Mania.UI
             Config.BindWith(ManiaRulesetSetting.ScrollDirection, configDirection);
             configDirection.BindValueChanged(direction => Direction.Value = (ScrollingDirection)direction.NewValue, true);
 
-            Config.BindWith(ManiaRulesetSetting.ScrollTime, TimeRange);
+            Config.BindWith(ManiaRulesetSetting.ScrollTime, configTimeRange);
         }
 
         protected override void AdjustScrollSpeed(int amount)
@@ -85,10 +95,19 @@ namespace osu.Game.Rulesets.Mania.UI
 
         private double relativeTimeRange
         {
-            get => MAX_TIME_RANGE / TimeRange.Value;
-            set => TimeRange.Value = MAX_TIME_RANGE / value;
+            get => MAX_TIME_RANGE / configTimeRange.Value;
+            set => configTimeRange.Value = MAX_TIME_RANGE / value;
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            updateTimeRange();
+        }
+
+        private void updateTimeRange() => TimeRange.Value = configTimeRange.Value * speedAdjustmentTrack.AggregateTempo.Value * speedAdjustmentTrack.AggregateFrequency.Value;
+
         /// <summary>
         /// Retrieves the column that intersects a screen-space position.
         /// </summary>

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

@@ -6,6 +6,7 @@ using osu.Framework.Graphics.Containers;
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.Allocation;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -14,9 +15,10 @@ using osuTK;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
+    [Cached]
     public class ManiaPlayfield : ScrollingPlayfield
     {
-        private readonly List<ManiaStage> stages = new List<ManiaStage>();
+        private readonly List<Stage> stages = new List<Stage>();
 
         public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => stages.Any(s => s.ReceivePositionalInputAt(screenSpacePos));
 
@@ -41,7 +43,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
             for (int i = 0; i < stageDefinitions.Count; i++)
             {
-                var newStage = new ManiaStage(firstColumnIndex, stageDefinitions[i], ref normalColumnAction, ref specialColumnAction);
+                var newStage = new Stage(firstColumnIndex, stageDefinitions[i], ref normalColumnAction, ref specialColumnAction);
 
                 playfieldGrid.Content[0][i] = newStage;
 
@@ -71,7 +73,7 @@ namespace osu.Game.Rulesets.Mania.UI
             {
                 foreach (var column in stage.Columns)
                 {
-                    if (column.ReceivePositionalInputAt(screenSpacePosition))
+                    if (column.ReceivePositionalInputAt(new Vector2(screenSpacePosition.X, column.ScreenSpaceDrawQuad.Centre.Y)))
                     {
                         found = column;
                         break;
@@ -85,12 +87,37 @@ namespace osu.Game.Rulesets.Mania.UI
             return found;
         }
 
+        /// <summary>
+        /// Retrieves a <see cref="Column"/> by index.
+        /// </summary>
+        /// <param name="index">The index of the column.</param>
+        /// <returns>The <see cref="Column"/> corresponding to the given index.</returns>
+        /// <exception cref="ArgumentOutOfRangeException">If <paramref name="index"/> is less than 0 or greater than <see cref="TotalColumns"/>.</exception>
+        public Column GetColumn(int index)
+        {
+            if (index < 0 || index > TotalColumns - 1)
+                throw new ArgumentOutOfRangeException(nameof(index));
+
+            foreach (var stage in stages)
+            {
+                if (index >= stage.Columns.Count)
+                {
+                    index -= stage.Columns.Count;
+                    continue;
+                }
+
+                return stage.Columns[index];
+            }
+
+            throw new ArgumentOutOfRangeException(nameof(index));
+        }
+
         /// <summary>
         /// Retrieves the total amount of columns across all stages in this playfield.
         /// </summary>
         public int TotalColumns => stages.Sum(s => s.Columns.Count);
 
-        private ManiaStage getStageByColumn(int column)
+        private Stage getStageByColumn(int column)
         {
             int sum = 0;
 

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

@@ -6,7 +6,6 @@ using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
@@ -25,11 +24,11 @@ namespace osu.Game.Rulesets.Mania.UI
     /// <summary>
     /// A collection of <see cref="Column"/>s.
     /// </summary>
-    public class ManiaStage : ScrollingPlayfield
+    public class Stage : ScrollingPlayfield
     {
         public const float COLUMN_SPACING = 1;
 
-        public const float HIT_TARGET_POSITION = 50;
+        public const float HIT_TARGET_POSITION = 110;
 
         public IReadOnlyList<Column> Columns => columnFlow.Children;
         private readonly FillFlowContainer<Column> columnFlow;
@@ -51,7 +50,7 @@ namespace osu.Game.Rulesets.Mania.UI
 
         private readonly int firstColumnIndex;
 
-        public ManiaStage(int firstColumnIndex, StageDefinition definition, ref ManiaAction normalColumnStartAction, ref ManiaAction specialColumnStartAction)
+        public Stage(int firstColumnIndex, StageDefinition definition, ref ManiaAction normalColumnStartAction, ref ManiaAction specialColumnStartAction)
         {
             this.firstColumnIndex = firstColumnIndex;
 
@@ -72,11 +71,9 @@ namespace osu.Game.Rulesets.Mania.UI
                     AutoSizeAxes = Axes.X,
                     Children = new Drawable[]
                     {
-                        new Box
+                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageBackground), _ => new DefaultStageBackground())
                         {
-                            Name = "Background",
-                            RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Black
+                            RelativeSizeAxes = Axes.Both
                         },
                         columnFlow = new FillFlowContainer<Column>
                         {
@@ -103,6 +100,10 @@ namespace osu.Game.Rulesets.Mania.UI
                                 RelativeSizeAxes = Axes.Y,
                             }
                         },
+                        new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.StageForeground), _ => null)
+                        {
+                            RelativeSizeAxes = Axes.Both
+                        },
                         judgements = new JudgementContainer<DrawableManiaJudgement>
                         {
                             Anchor = Anchor.TopCentre,

osu.Game.Rulesets.Mania/VariantMappingGenerator.cs

@@ -0,0 +1,61 @@
+// 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 osu.Framework.Input.Bindings;
+
+namespace osu.Game.Rulesets.Mania
+{
+    public class VariantMappingGenerator
+    {
+        /// <summary>
+        /// All the <see cref="InputKey"/>s available to the left hand.
+        /// </summary>
+        public InputKey[] LeftKeys;
+
+        /// <summary>
+        /// All the <see cref="InputKey"/>s available to the right hand.
+        /// </summary>
+        public InputKey[] RightKeys;
+
+        /// <summary>
+        /// The <see cref="InputKey"/> for the special key.
+        /// </summary>
+        public InputKey SpecialKey;
+
+        /// <summary>
+        /// The <see cref="ManiaAction"/> at which the normal columns should begin.
+        /// </summary>
+        public ManiaAction NormalActionStart;
+
+        /// <summary>
+        /// The <see cref="ManiaAction"/> for the special column.
+        /// </summary>
+        public ManiaAction SpecialAction;
+
+        /// <summary>
+        /// Generates a list of <see cref="KeyBinding"/>s for a specific number of columns.
+        /// </summary>
+        /// <param name="columns">The number of columns that need to be bound.</param>
+        /// <param name="nextNormalAction">The next <see cref="ManiaAction"/> to use for normal columns.</param>
+        /// <returns>The keybindings.</returns>
+        public IEnumerable<KeyBinding> GenerateKeyBindingsFor(int columns, out ManiaAction nextNormalAction)
+        {
+            ManiaAction currentNormalAction = NormalActionStart;
+
+            var bindings = new List<KeyBinding>();
+
+            for (int i = LeftKeys.Length - columns / 2; i < LeftKeys.Length; i++)
+                bindings.Add(new KeyBinding(LeftKeys[i], currentNormalAction++));
+
+            if (columns % 2 == 1)
+                bindings.Add(new KeyBinding(SpecialKey, SpecialAction));
+
+            for (int i = 0; i < columns / 2; i++)
+                bindings.Add(new KeyBinding(RightKeys[i], currentNormalAction++));
+
+            nextNormalAction = currentNormalAction;
+            return bindings;
+        }
+    }
+}

osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModHidden.cs

@@ -0,0 +1,106 @@
+// 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 NUnit.Framework;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests.Mods
+{
+    public class TestSceneOsuModHidden : ModTestScene
+    {
+        public TestSceneOsuModHidden()
+            : base(new OsuRuleset())
+        {
+        }
+
+        [Test]
+        public void TestDefaultBeatmapTest() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden(),
+            Autoplay = true,
+            PassCondition = checkSomeHit
+        });
+
+        [Test]
+        public void FirstCircleAfterTwoSpinners() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden(),
+            Autoplay = true,
+            Beatmap = new Beatmap
+            {
+                HitObjects = new List<HitObject>
+                {
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        EndTime = 1000,
+                    },
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        StartTime = 1200,
+                        EndTime = 2200,
+                    },
+                    new HitCircle
+                    {
+                        Position = new Vector2(300, 192),
+                        StartTime = 3200,
+                    },
+                    new HitCircle
+                    {
+                        Position = new Vector2(384, 192),
+                        StartTime = 4200,
+                    }
+                }
+            },
+            PassCondition = checkSomeHit
+        });
+
+        [Test]
+        public void FirstSliderAfterTwoSpinners() => CreateModTest(new ModTestData
+        {
+            Mod = new OsuModHidden(),
+            Autoplay = true,
+            Beatmap = new Beatmap
+            {
+                HitObjects = new List<HitObject>
+                {
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        EndTime = 1000,
+                    },
+                    new Spinner
+                    {
+                        Position = new Vector2(256, 192),
+                        StartTime = 1200,
+                        EndTime = 2200,
+                    },
+                    new Slider
+                    {
+                        StartTime = 3200,
+                        Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(100, 0), })
+                    },
+                    new Slider
+                    {
+                        StartTime = 5200,
+                        Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, new Vector2(100, 0), })
+                    }
+                }
+            },
+            PassCondition = checkSomeHit
+        });
+
+        private bool checkSomeHit()
+        {
+            return Player.ScoreProcessor.JudgedHits >= 4;
+        }
+    }
+}

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

@@ -0,0 +1,21 @@
+// 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 osu.Game.Rulesets.Osu.Skinning;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public abstract class OsuSkinnableTestScene : SkinnableTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(OsuRuleset),
+            typeof(OsuLegacySkinTransformer),
+        };
+
+        protected override Ruleset CreateRulesetForSkinProvider() => new OsuRuleset();
+    }
+}

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

@@ -10,17 +10,16 @@ using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
-    public class TestSceneDrawableJudgement : SkinnableTestScene
+    public class TestSceneDrawableJudgement : OsuSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
         {
             typeof(DrawableJudgement),
             typeof(DrawableOsuJudgement)
-        };
+        }).ToList();
 
         public TestSceneDrawableJudgement()
         {

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

@@ -3,26 +3,32 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Testing.Input;
 using osu.Game.Configuration;
+using osu.Game.Rulesets.Osu.Skinning;
 using osu.Game.Rulesets.Osu.UI.Cursor;
+using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Play;
-using osu.Game.Tests.Visual;
 using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
     [TestFixture]
-    public class TestSceneGameplayCursor : SkinnableTestScene
+    public class TestSceneGameplayCursor : OsuSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
+        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
         {
+            typeof(GameplayCursorContainer),
             typeof(OsuCursorContainer),
+            typeof(OsuCursor),
+            typeof(LegacyCursor),
+            typeof(LegacyCursorTrail),
             typeof(CursorTrail)
-        };
+        }).ToList();
 
         [Cached]
         private GameplayBeatmap gameplayBeatmap;

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

@@ -14,12 +14,11 @@ using osu.Game.Rulesets.Mods;
 using System.Linq;
 using NUnit.Framework;
 using osu.Game.Rulesets.Scoring;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
     [TestFixture]
-    public class TestSceneHitCircle : SkinnableTestScene
+    public class TestSceneHitCircle : OsuSkinnableTestScene
     {
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {

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

@@ -0,0 +1,447 @@
+// 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 NUnit.Framework;
+using osu.Framework.Extensions.TypeExtensions;
+using osu.Framework.Screens;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Replays;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.Replays;
+using osu.Game.Rulesets.Replays;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+using osu.Game.Screens.Play;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public class TestSceneOutOfOrderHits : RateAdjustedBeatmapTestScene
+    {
+        private const double early_miss_window = 1000; // time after -1000 to -500 is considered a miss
+        private const double late_miss_window = 500; // time after +500 is considered a miss
+
+        /// <summary>
+        /// Tests clicking a future circle before the first circle's start time, while the first circle HAS NOT been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleBeforeFirstCircleTime()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle - 100, Position = positionSecondCircle, Actions = { OsuAction.LeftButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Miss);
+            addJudgementOffsetAssert(hitObjects[0], late_miss_window);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle at the first circle's start time, while the first circle HAS NOT been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleAtFirstCircleTime()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle, Position = positionSecondCircle, Actions = { OsuAction.LeftButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementOffsetAssert(hitObjects[0], 0);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle after the first circle's start time, while the first circle HAS NOT been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleAfterFirstCircleTime()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle + 100, Position = positionSecondCircle, Actions = { OsuAction.LeftButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementOffsetAssert(hitObjects[0], 100);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle before the first circle's start time, while the first circle HAS been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleBeforeFirstCircleTimeWithFirstCircleJudged()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle - 200, Position = positionFirstCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_first_circle - 100, Position = positionSecondCircle, Actions = { OsuAction.RightButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementOffsetAssert(hitObjects[0], -200); // time_first_circle - 200
+            addJudgementOffsetAssert(hitObjects[0], -200); // time_second_circle - first_circle_time - 100
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle after a slider's start time, but hitting all slider ticks.
+        /// </summary>
+        [Test]
+        public void TestMissSliderHeadAndHitAllSliderTicks()
+        {
+            const double time_slider = 1500;
+            const double time_circle = 1510;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_slider, Position = positionCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_slider + 10, Position = positionSlider, Actions = { OsuAction.RightButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementAssert("slider head", () => ((Slider)hitObjects[1]).HeadCircle, HitResult.Miss);
+            addJudgementAssert("slider tick", () => ((Slider)hitObjects[1]).NestedHitObjects[1] as SliderTick, HitResult.Great);
+        }
+
+        /// <summary>
+        /// Tests clicking hitting future slider ticks before a circle.
+        /// </summary>
+        [Test]
+        public void TestHitSliderTicksBeforeCircle()
+        {
+            const double time_slider = 1500;
+            const double time_circle = 1510;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_slider, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_circle + late_miss_window - 100, Position = positionCircle, Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_circle + late_miss_window - 90, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementAssert("slider head", () => ((Slider)hitObjects[1]).HeadCircle, HitResult.Great);
+            addJudgementAssert("slider tick", () => ((Slider)hitObjects[1]).NestedHitObjects[1] as SliderTick, HitResult.Great);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle before a spinner.
+        /// </summary>
+        [Test]
+        public void TestHitCircleBeforeSpinner()
+        {
+            const double time_spinner = 1500;
+            const double time_circle = 1800;
+            Vector2 positionCircle = Vector2.Zero;
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestSpinner
+                {
+                    StartTime = time_spinner,
+                    Position = new Vector2(256, 192),
+                    EndTime = time_spinner + 1000,
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_spinner - 100, Position = positionCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_spinner + 10, Position = new Vector2(236, 192), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 20, Position = new Vector2(256, 172), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 30, Position = new Vector2(276, 192), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 40, Position = new Vector2(256, 212), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 50, Position = new Vector2(236, 192), Actions = { OsuAction.RightButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+        }
+
+        [Test]
+        public void TestHitSliderHeadBeforeHitCircle()
+        {
+            const double time_circle = 1000;
+            const double time_slider = 1200;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_circle - 100, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_circle, Position = positionCircle, Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_slider, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+        }
+
+        private void addJudgementAssert(OsuHitObject hitObject, HitResult result)
+        {
+            AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judgement is {result}",
+                () => judgementResults.Single(r => r.HitObject == hitObject).Type == result);
+        }
+
+        private void addJudgementAssert(string name, Func<OsuHitObject> hitObject, HitResult result)
+        {
+            AddAssert($"{name} judgement is {result}",
+                () => judgementResults.Single(r => r.HitObject == hitObject()).Type == result);
+        }
+
+        private void addJudgementOffsetAssert(OsuHitObject hitObject, double offset)
+        {
+            AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judged at {offset}",
+                () => Precision.AlmostEquals(judgementResults.Single(r => r.HitObject == hitObject).TimeOffset, offset, 100));
+        }
+
+        private ScoreAccessibleReplayPlayer currentPlayer;
+        private List<JudgementResult> judgementResults;
+
+        private void performTest(List<OsuHitObject> hitObjects, List<ReplayFrame> frames)
+        {
+            AddStep("load player", () =>
+            {
+                Beatmap.Value = CreateWorkingBeatmap(new Beatmap<OsuHitObject>
+                {
+                    HitObjects = hitObjects,
+                    BeatmapInfo =
+                    {
+                        BaseDifficulty = new BeatmapDifficulty { SliderTickRate = 3 },
+                        Ruleset = new OsuRuleset().RulesetInfo
+                    },
+                });
+
+                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
+
+                var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
+
+                p.OnLoadComplete += _ =>
+                {
+                    p.ScoreProcessor.NewJudgement += result =>
+                    {
+                        if (currentPlayer == p) judgementResults.Add(result);
+                    };
+                };
+
+                LoadScreen(currentPlayer = p);
+                judgementResults = new List<JudgementResult>();
+            });
+
+            AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
+            AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
+        }
+
+        private class TestHitCircle : HitCircle
+        {
+            protected override HitWindows CreateHitWindows() => new TestHitWindows();
+        }
+
+        private class TestSlider : Slider
+        {
+            public TestSlider()
+            {
+                DefaultsApplied += _ =>
+                {
+                    HeadCircle.HitWindows = new TestHitWindows();
+                    TailCircle.HitWindows = new TestHitWindows();
+
+                    HeadCircle.HitWindows.SetDifficulty(0);
+                    TailCircle.HitWindows.SetDifficulty(0);
+                };
+            }
+        }
+
+        private class TestSpinner : Spinner
+        {
+            protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+            {
+                base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
+                SpinsRequired = 1;
+            }
+        }
+
+        private class TestHitWindows : HitWindows
+        {
+            private static readonly DifficultyRange[] ranges =
+            {
+                new DifficultyRange(HitResult.Great, 500, 500, 500),
+                new DifficultyRange(HitResult.Miss, early_miss_window, early_miss_window, early_miss_window),
+            };
+
+            public override bool IsHitResultAllowed(HitResult result) => result == HitResult.Great || result == HitResult.Miss;
+
+            protected override DifficultyRange[] GetRanges() => ranges;
+        }
+
+        private class ScoreAccessibleReplayPlayer : ReplayPlayer
+        {
+            public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
+
+            protected override bool PauseOnFocusLost => false;
+
+            public ScoreAccessibleReplayPlayer(Score score)
+                : base(score, false, false)
+            {
+            }
+        }
+    }
+}

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

@@ -0,0 +1,64 @@
+// 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 Humanizer;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public class TestScenePathControlPointVisualiser : OsuTestScene
+    {
+        public override IReadOnlyList<Type> RequiredTypes => new[]
+        {
+            typeof(StringHumanizeExtensions),
+            typeof(PathControlPointPiece),
+            typeof(PathControlPointConnectionPiece)
+        };
+
+        private Slider slider;
+        private PathControlPointVisualiser visualiser;
+
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            slider = new Slider();
+            slider.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+        });
+
+        [Test]
+        public void TestAddOverlappingControlPoints()
+        {
+            createVisualiser(true);
+
+            addControlPointStep(new Vector2(200));
+            addControlPointStep(new Vector2(300));
+            addControlPointStep(new Vector2(300));
+            addControlPointStep(new Vector2(500, 300));
+
+            AddAssert("last connection displayed", () =>
+            {
+                var lastConnection = visualiser.Connections.Last(c => c.ControlPoint.Position.Value == new Vector2(300));
+                return lastConnection.DrawWidth > 50;
+            });
+        }
+
+        private void createVisualiser(bool allowSelection) => AddStep("create visualiser", () => Child = visualiser = new PathControlPointVisualiser(slider, allowSelection)
+        {
+            Anchor = Anchor.Centre,
+            Origin = Anchor.Centre
+        });
+
+        private void addControlPointStep(Vector2 position) => AddStep($"add control point {position}", () => slider.Path.ControlPoints.Add(new PathControlPoint(position)));
+    }
+}

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

@@ -22,12 +22,11 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Objects.Drawables.Pieces;
-using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
     [TestFixture]
-    public class TestSceneSlider : SkinnableTestScene
+    public class TestSceneSlider : OsuSkinnableTestScene
     {
         public override IReadOnlyList<Type> RequiredTypes => new[]
         {

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

@@ -47,7 +47,6 @@ namespace osu.Game.Rulesets.Osu.Tests
         private const double time_slider_end = 4000;
 
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         /// <summary>
         /// Scenario:
@@ -375,20 +374,15 @@ namespace osu.Game.Rulesets.Osu.Tests
                     {
                         if (currentPlayer == p) judgementResults.Add(result);
                     };
-                    p.ScoreProcessor.AllJudged += () =>
-                    {
-                        if (currentPlayer == p) allJudgedFired = true;
-                    };
                 };
 
                 LoadScreen(currentPlayer = p);
-                allJudgedFired = false;
                 judgementResults = new List<JudgementResult>();
             });
 
             AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
             AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
-            AddUntilStep("Wait for all judged", () => allJudgedFired);
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
         }
 
         private class ScoreAccessibleReplayPlayer : ReplayPlayer

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

@@ -1,18 +1,302 @@
 // 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 NUnit.Framework;
+using osu.Framework.Utils;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneSliderPlacementBlueprint : PlacementBlueprintTestScene
     {
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            HitObjectContainer.Clear();
+            ResetPlacement();
+        });
+
+        [Test]
+        public void TestBeginPlacementWithoutFinishing()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            assertPlaced(false);
+        }
+
+        [Test]
+        public void TestPlaceWithoutMovingMouse()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertLength(0);
+            assertControlPointType(0, PathType.Linear);
+        }
+
+        [Test]
+        public void TestPlaceWithMouseMovement()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400, 200));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertLength(200);
+            assertControlPointCount(2);
+            assertControlPointType(0, PathType.Linear);
+        }
+
+        [Test]
+        public void TestPlaceNormalControlPoint()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(3);
+            assertControlPointPosition(1, new Vector2(100, 0));
+            assertControlPointType(0, PathType.PerfectCurve);
+        }
+
+        [Test]
+        public void TestPlaceTwoNormalControlPoints()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400, 300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(4);
+            assertControlPointPosition(1, new Vector2(100, 0));
+            assertControlPointPosition(2, new Vector2(100, 100));
+            assertControlPointType(0, PathType.Bezier);
+        }
+
+        [Test]
+        public void TestPlaceSegmentControlPoint()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(3);
+            assertControlPointPosition(1, new Vector2(100, 0));
+            assertControlPointType(0, PathType.Linear);
+            assertControlPointType(1, PathType.Linear);
+        }
+
+        [Test]
+        public void TestMoveToPerfectCurveThenPlaceLinear()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(2);
+            assertControlPointType(0, PathType.Linear);
+            assertLength(100);
+        }
+
+        [Test]
+        public void TestMoveToBezierThenPlacePerfectCurve()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400, 300));
+            addMovementStep(new Vector2(300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(3);
+            assertControlPointType(0, PathType.PerfectCurve);
+        }
+
+        [Test]
+        public void TestMoveToFourthOrderBezierThenPlaceThirdOrderBezier()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400, 300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400));
+            addMovementStep(new Vector2(400, 300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(4);
+            assertControlPointType(0, PathType.Bezier);
+        }
+
+        [Test]
+        public void TestPlaceLinearSegmentThenPlaceLinearSegment()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(3);
+            assertControlPointPosition(1, new Vector2(100, 0));
+            assertControlPointPosition(2, new Vector2(100));
+            assertControlPointType(0, PathType.Linear);
+            assertControlPointType(1, PathType.Linear);
+        }
+
+        [Test]
+        public void TestPlaceLinearSegmentThenPlacePerfectCurveSegment()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400, 300));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(4);
+            assertControlPointPosition(1, new Vector2(100, 0));
+            assertControlPointPosition(2, new Vector2(100));
+            assertControlPointType(0, PathType.Linear);
+            assertControlPointType(1, PathType.PerfectCurve);
+        }
+
+        [Test]
+        public void TestPlacePerfectCurveSegmentThenPlacePerfectCurveSegment()
+        {
+            addMovementStep(new Vector2(200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 200));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(300, 300));
+            addClickStep(MouseButton.Left);
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400, 300));
+            addClickStep(MouseButton.Left);
+
+            addMovementStep(new Vector2(400));
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertControlPointCount(5);
+            assertControlPointPosition(1, new Vector2(100, 0));
+            assertControlPointPosition(2, new Vector2(100));
+            assertControlPointPosition(3, new Vector2(200, 100));
+            assertControlPointPosition(4, new Vector2(200));
+            assertControlPointType(0, PathType.PerfectCurve);
+            assertControlPointType(2, PathType.PerfectCurve);
+        }
+
+        [Test]
+        public void TestBeginPlacementWithoutReleasingMouse()
+        {
+            addMovementStep(new Vector2(200));
+            AddStep("press left button", () => InputManager.PressButton(MouseButton.Left));
+
+            addMovementStep(new Vector2(400, 200));
+            AddStep("release left button", () => InputManager.ReleaseButton(MouseButton.Left));
+
+            addClickStep(MouseButton.Right);
+
+            assertPlaced(true);
+            assertLength(200);
+            assertControlPointCount(2);
+            assertControlPointType(0, PathType.Linear);
+        }
+
+        private void addMovementStep(Vector2 position) => AddStep($"move mouse to {position}", () => InputManager.MoveMouseTo(InputManager.ToScreenSpace(position)));
+
+        private void addClickStep(MouseButton button)
+        {
+            AddStep($"press {button}", () => InputManager.PressButton(button));
+            AddStep($"release {button}", () => InputManager.ReleaseButton(button));
+        }
+
+        private void assertPlaced(bool expected) => AddAssert($"slider {(expected ? "placed" : "not placed")}", () => (getSlider() != null) == expected);
+
+        private void assertLength(double expected) => AddAssert($"slider length is {expected}", () => Precision.AlmostEquals(expected, getSlider().Distance, 1));
+
+        private void assertControlPointCount(int expected) => AddAssert($"has {expected} control points", () => getSlider().Path.ControlPoints.Count == expected);
+
+        private void assertControlPointType(int index, PathType type) => AddAssert($"control point {index} is {type}", () => getSlider().Path.ControlPoints[index].Type.Value == type);
+
+        private void assertControlPointPosition(int index, Vector2 position) =>
+            AddAssert($"control point {index} at {position}", () => Precision.AlmostEquals(position, getSlider().Path.ControlPoints[index].Position.Value, 1));
+
+        private Slider getSlider() => HitObjectContainer.Count > 0 ? (Slider)((DrawableSlider)HitObjectContainer[0]).HitObject : null;
+
         protected override DrawableHitObject CreateHitObject(HitObject hitObject) => new DrawableSlider((Slider)hitObject);
         protected override PlacementBlueprint CreateBlueprint() => new SliderPlacementBlueprint();
     }

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

@@ -0,0 +1,253 @@
+// 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 Humanizer;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
+using osu.Framework.Timing;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Configuration;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+using osu.Game.Rulesets.Osu.Objects.Drawables.Pieces;
+using osu.Game.Storyboards;
+using osuTK;
+using static osu.Game.Tests.Visual.OsuTestScene.ClockBackedTestWorkingBeatmap;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    [TestFixture]
+    public class TestSceneSliderSnaking : TestSceneOsuPlayer
+    {
+        [Resolved]
+        private AudioManager audioManager { get; set; }
+
+        private TrackVirtualManual track;
+
+        protected override bool Autoplay => autoplay;
+        private bool autoplay;
+
+        private readonly BindableBool snakingIn = new BindableBool();
+        private readonly BindableBool snakingOut = new BindableBool();
+
+        private const double duration_of_span = 3605;
+        private const double fade_in_modifier = -1200;
+
+        protected override WorkingBeatmap CreateWorkingBeatmap(IBeatmap beatmap, Storyboard storyboard = null)
+        {
+            var working = new ClockBackedTestWorkingBeatmap(beatmap, storyboard, new FramedClock(new ManualClock { Rate = 1 }), audioManager);
+            track = (TrackVirtualManual)working.Track;
+            return working;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(RulesetConfigCache configCache)
+        {
+            var config = (OsuRulesetConfigManager)configCache.GetConfigFor(Ruleset.Value.CreateInstance());
+            config.BindWith(OsuRulesetSetting.SnakingInSliders, snakingIn);
+            config.BindWith(OsuRulesetSetting.SnakingOutSliders, snakingOut);
+        }
+
+        private DrawableSlider slider;
+
+        [SetUpSteps]
+        public override void SetUpSteps() { }
+
+        [TestCase(0)]
+        [TestCase(1)]
+        [TestCase(2)]
+        public void TestSnakingEnabled(int sliderIndex)
+        {
+            AddStep("enable autoplay", () => autoplay = true);
+            base.SetUpSteps();
+            AddUntilStep("wait for track to start running", () => track.IsRunning);
+
+            double startTime = hitObjects[sliderIndex].StartTime;
+            retrieveDrawableSlider(sliderIndex);
+            setSnaking(true);
+
+            ensureSnakingIn(startTime + fade_in_modifier);
+
+            for (int i = 0; i < sliderIndex; i++)
+            {
+                // non-final repeats should not snake out
+                ensureNoSnakingOut(startTime, i);
+            }
+
+            // final repeat should snake out
+            ensureSnakingOut(startTime, sliderIndex);
+        }
+
+        [TestCase(0)]
+        [TestCase(1)]
+        [TestCase(2)]
+        public void TestSnakingDisabled(int sliderIndex)
+        {
+            AddStep("have autoplay", () => autoplay = true);
+            base.SetUpSteps();
+            AddUntilStep("wait for track to start running", () => track.IsRunning);
+
+            double startTime = hitObjects[sliderIndex].StartTime;
+            retrieveDrawableSlider(sliderIndex);
+            setSnaking(false);
+
+            ensureNoSnakingIn(startTime + fade_in_modifier);
+
+            for (int i = 0; i <= sliderIndex; i++)
+            {
+                // no snaking out ever, including final repeat
+                ensureNoSnakingOut(startTime, i);
+            }
+        }
+
+        [Test]
+        public void TestRepeatArrowDoesNotMoveWhenHit()
+        {
+            AddStep("enable autoplay", () => autoplay = true);
+            setSnaking(true);
+            base.SetUpSteps();
+
+            // repeat might have a chance to update its position depending on where in the frame its hit,
+            // so some leniency is allowed here instead of checking strict equality
+            checkPositionChange(16600, sliderRepeat, positionAlmostSame);
+        }
+
+        [Test]
+        public void TestRepeatArrowMovesWhenNotHit()
+        {
+            AddStep("disable autoplay", () => autoplay = false);
+            setSnaking(true);
+            base.SetUpSteps();
+
+            checkPositionChange(16600, sliderRepeat, positionDecreased);
+        }
+
+        private void retrieveDrawableSlider(int index) => AddStep($"retrieve {(index + 1).ToOrdinalWords()} slider", () =>
+        {
+            slider = (DrawableSlider)Player.DrawableRuleset.Playfield.AllHitObjects.ElementAt(index);
+        });
+
+        private void ensureSnakingIn(double startTime) => checkPositionChange(startTime, sliderEnd, positionIncreased);
+        private void ensureNoSnakingIn(double startTime) => checkPositionChange(startTime, sliderEnd, positionRemainsSame);
+
+        private void ensureSnakingOut(double startTime, int repeatIndex)
+        {
+            var repeatTime = timeAtRepeat(startTime, repeatIndex);
+
+            if (repeatIndex % 2 == 0)
+                checkPositionChange(repeatTime, sliderStart, positionIncreased);
+            else
+                checkPositionChange(repeatTime, sliderEnd, positionDecreased);
+        }
+
+        private void ensureNoSnakingOut(double startTime, int repeatIndex) =>
+            checkPositionChange(timeAtRepeat(startTime, repeatIndex), positionAtRepeat(repeatIndex), positionRemainsSame);
+
+        private double timeAtRepeat(double startTime, int repeatIndex) => startTime + 100 + duration_of_span * repeatIndex;
+        private Func<Vector2> positionAtRepeat(int repeatIndex) => repeatIndex % 2 == 0 ? (Func<Vector2>)sliderStart : sliderEnd;
+
+        private List<Vector2> sliderCurve => ((PlaySliderBody)slider.Body.Drawable).CurrentCurve;
+        private Vector2 sliderStart() => sliderCurve.First();
+        private Vector2 sliderEnd() => sliderCurve.Last();
+
+        private Vector2 sliderRepeat()
+        {
+            var drawable = Player.DrawableRuleset.Playfield.AllHitObjects.ElementAt(1);
+            var repeat = drawable.ChildrenOfType<Container<DrawableSliderRepeat>>().First().Children.First();
+            return repeat.Position;
+        }
+
+        private bool positionRemainsSame(Vector2 previous, Vector2 current) => previous == current;
+        private bool positionIncreased(Vector2 previous, Vector2 current) => current.X > previous.X && current.Y > previous.Y;
+        private bool positionDecreased(Vector2 previous, Vector2 current) => current.X < previous.X && current.Y < previous.Y;
+        private bool positionAlmostSame(Vector2 previous, Vector2 current) => Precision.AlmostEquals(previous, current, 1);
+
+        private void checkPositionChange(double startTime, Func<Vector2> positionToCheck, Func<Vector2, Vector2, bool> positionAssertion)
+        {
+            Vector2 previousPosition = Vector2.Zero;
+
+            string positionDescription = positionToCheck.Method.Name.Humanize(LetterCasing.LowerCase);
+            string assertionDescription = positionAssertion.Method.Name.Humanize(LetterCasing.LowerCase);
+
+            addSeekStep(startTime);
+            AddStep($"save {positionDescription} position", () => previousPosition = positionToCheck.Invoke());
+            addSeekStep(startTime + 100);
+            AddAssert($"{positionDescription} {assertionDescription}", () =>
+            {
+                var currentPosition = positionToCheck.Invoke();
+                return positionAssertion.Invoke(previousPosition, currentPosition);
+            });
+        }
+
+        private void setSnaking(bool value)
+        {
+            AddStep($"{(value ? "enable" : "disable")} snaking", () =>
+            {
+                snakingIn.Value = value;
+                snakingOut.Value = value;
+            });
+        }
+
+        private void addSeekStep(double time)
+        {
+            AddStep($"seek to {time}", () => track.Seek(time));
+
+            AddUntilStep("wait for seek to finish", () => Precision.AlmostEquals(time, Player.DrawableRuleset.FrameStableClock.CurrentTime, 100));
+        }
+
+        protected override IBeatmap CreateBeatmap(RulesetInfo ruleset) => new Beatmap
+        {
+            HitObjects = hitObjects
+        };
+
+        private readonly List<HitObject> hitObjects = new List<HitObject>
+        {
+            new Slider
+            {
+                StartTime = 3000,
+                Position = new Vector2(100, 100),
+                Path = new SliderPath(PathType.PerfectCurve, new[]
+                {
+                    Vector2.Zero,
+                    new Vector2(300, 200)
+                }),
+            },
+            new Slider
+            {
+                StartTime = 13000,
+                Position = new Vector2(100, 100),
+                Path = new SliderPath(PathType.PerfectCurve, new[]
+                {
+                    Vector2.Zero,
+                    new Vector2(300, 200)
+                }),
+                RepeatCount = 1,
+            },
+            new Slider
+            {
+                StartTime = 23000,
+                Position = new Vector2(100, 100),
+                Path = new SliderPath(PathType.PerfectCurve, new[]
+                {
+                    Vector2.Zero,
+                    new Vector2(300, 200)
+                }),
+                RepeatCount = 2,
+            },
+            new HitCircle
+            {
+                StartTime = 199999,
+            }
+        };
+    }
+}

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.6.1" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.15.1" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

osu.Game.Rulesets.Osu/Edit/Blueprints/HitCircles/HitCirclePlacementBlueprint.cs

@@ -6,6 +6,7 @@ using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osuTK;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
 {
@@ -28,16 +29,17 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
             circlePiece.UpdateFrom(HitObject);
         }
 
-        protected override bool OnClick(ClickEvent e)
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            if (e.Button == MouseButton.Left)
             {
                 EndPlacement(true);
                 return true;
             }
 
-        public override void UpdatePosition(Vector2 screenSpacePosition)
-        {
-            BeginPlacement();
-            HitObject.Position = ToLocalSpace(screenSpacePosition);
-        }
+            return base.OnMouseDown(e);
+        }
+
+        public override void UpdatePosition(Vector2 screenSpacePosition) => HitObject.Position = ToLocalSpace(screenSpacePosition);
     }
 }

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointConnectionPiece.cs

@@ -16,22 +16,25 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
     /// </summary>
     public class PathControlPointConnectionPiece : CompositeDrawable
     {
-        public PathControlPoint ControlPoint;
+        public readonly PathControlPoint ControlPoint;
 
         private readonly Path path;
         private readonly Slider slider;
+        private readonly int controlPointIndex;
 
         private IBindable<Vector2> sliderPosition;
         private IBindable<int> pathVersion;
 
-        public PathControlPointConnectionPiece(Slider slider, PathControlPoint controlPoint)
+        public PathControlPointConnectionPiece(Slider slider, int controlPointIndex)
         {
             this.slider = slider;
-            ControlPoint = controlPoint;
+            this.controlPointIndex = controlPointIndex;
 
             Origin = Anchor.Centre;
             AutoSizeAxes = Axes.Both;
 
+            ControlPoint = slider.Path.ControlPoints[controlPointIndex];
+
             InternalChild = path = new SmoothPath
             {
                 Anchor = Anchor.Centre,
@@ -61,13 +64,12 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
             path.ClearVertices();
 
-            int index = slider.Path.ControlPoints.IndexOf(ControlPoint) + 1;
-
-            if (index == 0 || index == slider.Path.ControlPoints.Count)
+            int nextIndex = controlPointIndex + 1;
+            if (nextIndex == 0 || nextIndex >= slider.Path.ControlPoints.Count)
                 return;
 
             path.AddVertex(Vector2.Zero);
-            path.AddVertex(slider.Path.ControlPoints[index].Position.Value - ControlPoint.Position.Value);
+            path.AddVertex(slider.Path.ControlPoints[nextIndex].Position.Value - ControlPoint.Position.Value);
 
             path.OriginPosition = path.PositionInBoundingBox(Vector2.Zero);
         }

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/Components/PathControlPointPiece.cs

@@ -4,6 +4,7 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
@@ -12,6 +13,7 @@ using osu.Game.Graphics;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Screens.Edit;
 using osuTK;
 using osuTK.Graphics;
 using osuTK.Input;
@@ -26,13 +28,15 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         public Action<PathControlPointPiece, MouseButtonEvent> RequestSelection;
 
         public readonly BindableBool IsSelected = new BindableBool();
-
         public readonly PathControlPoint ControlPoint;
 
         private readonly Slider slider;
         private readonly Container marker;
         private readonly Drawable markerRing;
 
+        [Resolved(CanBeNull = true)]
+        private IEditorChangeHandler changeHandler { get; set; }
+
         [Resolved(CanBeNull = true)]
         private IDistanceSnapProvider snapProvider { get; set; }
 
@@ -47,6 +51,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
             this.slider = slider;
             ControlPoint = controlPoint;
 
+            controlPoint.Type.BindValueChanged(_ => updateMarkerDisplay());
+
             Origin = Anchor.Centre;
             AutoSizeAxes = Axes.Both;
 
@@ -137,7 +143,19 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
         protected override bool OnClick(ClickEvent e) => RequestSelection != null;
 
-        protected override bool OnDragStart(DragStartEvent e) => e.Button == MouseButton.Left;
+        protected override bool OnDragStart(DragStartEvent e)
+        {
+            if (RequestSelection == null)
+                return false;
+
+            if (e.Button == MouseButton.Left)
+            {
+                changeHandler?.BeginChange();
+                return true;
+            }
+
+            return false;
+        }
 
         protected override void OnDrag(DragEvent e)
         {
@@ -158,6 +176,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                 ControlPoint.Position.Value += e.Delta;
         }
 
+        protected override void OnDragEnd(DragEndEvent e) => changeHandler?.EndChange();
+
         /// <summary>
         /// Updates the state of the circular control point marker.
         /// </summary>
@@ -168,8 +188,10 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
             markerRing.Alpha = IsSelected.Value ? 1 : 0;
 
             Color4 colour = ControlPoint.Type.Value != null ? colours.Red : colours.Yellow;
+
             if (IsHovered || IsSelected.Value)
-                colour = Color4.White;
+                colour = colour.Lighten(1);
+
             marker.Colour = colour;
         }
     }