Merge pull request #9021 from smoogipoo/mania-distance-snap-grid

Implement beat snapping grid for mania's editor

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>

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.412.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.411.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.512.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.519.0" />
   </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.Desktop/Updater/SquirrelUpdateManager.cs

@@ -43,7 +43,7 @@ namespace osu.Desktop.Updater
 
         private async void checkForUpdateAsync(bool useDeltaPatching = true, UpdateProgressNotification notification = null)
         {
-            //should we schedule a retry on completion of this check?
+            // should we schedule a retry on completion of this check?
             bool scheduleRecheck = true;
 
             try
@@ -52,7 +52,7 @@ namespace osu.Desktop.Updater
 
                 var info = await updateManager.CheckForUpdate(!useDeltaPatching);
                 if (info.ReleasesToApply.Count == 0)
-                    //no updates available. bail and retry later.
+                    // no updates available. bail and retry later.
                     return;
 
                 if (notification == null)
@@ -81,8 +81,8 @@ namespace osu.Desktop.Updater
                     {
                         logger.Add(@"delta patching failed; will attempt full download!");
 
-                        //could fail if deltas are unavailable for full update path (https://github.com/Squirrel/Squirrel.Windows/issues/959)
-                        //try again without deltas.
+                        // could fail if deltas are unavailable for full update path (https://github.com/Squirrel/Squirrel.Windows/issues/959)
+                        // try again without deltas.
                         checkForUpdateAsync(false, notification);
                         scheduleRecheck = false;
                     }
@@ -101,7 +101,7 @@ namespace osu.Desktop.Updater
             {
                 if (scheduleRecheck)
                 {
-                    //check again in 30 minutes.
+                    // check again in 30 minutes.
                     Scheduler.AddDelayed(() => checkForUpdateAsync(), 60000 * 30);
                 }
             }

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/CatchSkinColourDecodingTest.cs

@@ -0,0 +1,36 @@
+// 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.IO.Stores;
+using osu.Game.Rulesets.Catch.Skinning;
+using osu.Game.Skinning;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    [TestFixture]
+    public class CatchSkinColourDecodingTest
+    {
+        [Test]
+        public void TestCatchSkinColourDecoding()
+        {
+            var store = new NamespacedResourceStore<byte[]>(new DllResourceStore(GetType().Assembly), "Resources/special-skin");
+            var rawSkin = new TestLegacySkin(new SkinInfo { Name = "special-skin" }, store);
+            var skin = new CatchLegacySkinTransformer(rawSkin);
+
+            Assert.AreEqual(new Color4(232, 185, 35, 255), skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDash)?.Value);
+            Assert.AreEqual(new Color4(232, 74, 35, 255), skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashAfterImage)?.Value);
+            Assert.AreEqual(new Color4(0, 255, 255, 255), skin.GetConfig<CatchSkinColour, Color4>(CatchSkinColour.HyperDashFruit)?.Value);
+        }
+
+        private class TestLegacySkin : LegacySkin
+        {
+            public TestLegacySkin(SkinInfo skin, IResourceStore<byte[]> storage)
+                // Bypass LegacySkinResourceStore to avoid returning null for retrieving files due to bad skin info (SkinInfo.Files = null).
+                : base(skin, storage, null, "skin.ini")
+            {
+            }
+        }
+    }
+}

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

@@ -1,21 +1,12 @@
 // 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/Resources/special-skin/skin.ini

@@ -0,0 +1,4 @@
+[CatchTheBeat]
+HyperDash: 232,185,35
+HyperDashFruit: 0,255,255
+HyperDashAfterImage: 232,74,35

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

@@ -1,13 +1,9 @@
 // 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.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
-using osu.Game.Rulesets.Catch.Objects.Drawables;
-using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Catch.Tests
@@ -15,17 +11,6 @@ namespace osu.Game.Rulesets.Catch.Tests
     [TestFixture]
     public class TestSceneBananaShower : PlayerTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(BananaShower),
-            typeof(Banana),
-            typeof(DrawableBananaShower),
-            typeof(DrawableBanana),
-
-            typeof(CatchRuleset),
-            typeof(DrawableCatchRuleset),
-        };
-
         public TestSceneBananaShower()
             : base(new CatchRuleset())
         {

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

@@ -4,26 +4,18 @@
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Game.Rulesets.Catch.UI;
-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 : CatchSkinnableTestScene
     {
-        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/TestSceneDrawableHitObjects.cs

@@ -1,7 +1,6 @@
 // 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;
@@ -22,15 +21,6 @@ namespace osu.Game.Rulesets.Catch.Tests
 {
     public class TestSceneDrawableHitObjects : OsuTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(Catcher),
-            typeof(DrawableCatchRuleset),
-            typeof(DrawableFruit),
-            typeof(DrawableJuiceStream),
-            typeof(DrawableBanana)
-        };
-
         private DrawableCatchRuleset drawableRuleset;
         private double playfieldTime => drawableRuleset.Playfield.Time.Current;
 

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

@@ -1,9 +1,6 @@
 // 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.Game.Rulesets.Catch.Mods;
 
@@ -11,8 +8,6 @@ namespace osu.Game.Rulesets.Catch.Tests
 {
     public class TestSceneDrawableHitObjectsHidden : TestSceneDrawableHitObjects
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[] { typeof(CatchModHidden) }).ToList();
-
         [SetUp]
         public void SetUp() => Schedule(() =>
         {

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

@@ -2,13 +2,10 @@
 // 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.Graphics;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Tests
@@ -16,22 +13,6 @@ namespace osu.Game.Rulesets.Catch.Tests
     [TestFixture]
     public class TestSceneFruitObjects : CatchSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(CatchHitObject),
-            typeof(Fruit),
-            typeof(FruitPiece),
-            typeof(Droplet),
-            typeof(Banana),
-            typeof(BananaShower),
-            typeof(DrawableCatchHitObject),
-            typeof(DrawableFruit),
-            typeof(DrawableDroplet),
-            typeof(DrawableBanana),
-            typeof(DrawableBananaShower),
-            typeof(Pulp),
-        }).ToList();
-
         protected override void LoadComplete()
         {
             base.LoadComplete();

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

@@ -2,7 +2,6 @@
 // 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.Testing;
@@ -18,11 +17,6 @@ namespace osu.Game.Rulesets.Catch.Tests
     [TestFixture]
     public class TestSceneHyperDash : PlayerTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(CatcherArea),
-        };
-
         public TestSceneHyperDash()
             : base(new CatchRuleset())
         {

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

@@ -0,0 +1,206 @@
+// 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.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.Skinning;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Skinning;
+using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public class TestSceneHyperDashColouring : OsuTestScene
+    {
+        [Resolved]
+        private SkinManager skins { get; set; }
+
+        [Test]
+        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("create hyper-dashing catcher", () =>
+            {
+                Child = setupSkinHierarchy(catcherArea = new CatcherArea
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Scale = new Vector2(4f),
+                }, skin);
+
+                trails = catcherArea.OfType<CatcherTrailDisplay>().Single();
+                catcherArea.MovableCatcher.SetHyperDashState(2);
+            });
+
+            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", () =>
+            {
+                catcherArea.MovableCatcher.SetHyperDashState(1);
+                catcherArea.MovableCatcher.FinishTransforms();
+            });
+
+            AddAssert("catcher colour returned to white", () => catcherArea.MovableCatcher.Colour == Color4.White);
+        }
+
+        private void checkHyperDashFruitColour(ISkin skin, Color4 expectedColour)
+        {
+            DrawableFruit drawableFruit = null;
+
+            AddStep("create 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),
+                }, skin);
+            });
+
+            AddAssert("hyper-dash colour is correct", () => checkLegacyFruitHyperDashColour(drawableFruit, expectedColour));
+        }
+
+        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
+                .WithChild(testSkinProvider
+                    .WithChild(legacySkinTransformer
+                        .WithChild(child)));
+        }
+
+        private bool checkLegacyFruitHyperDashColour(DrawableFruit fruit, Color4 expectedColour) =>
+            fruit.ChildrenOfType<SkinnableDrawable>().First().Drawable.ChildrenOfType<Sprite>().Any(c => c.Colour == expectedColour);
+
+        private class TestSkin : LegacySkin
+        {
+            public Color4 HyperDashColour
+            {
+                get => Configuration.CustomColours[CatchSkinColour.HyperDash.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDash.ToString()] = value;
+            }
+
+            public Color4 HyperDashAfterImageColour
+            {
+                get => Configuration.CustomColours[CatchSkinColour.HyperDashAfterImage.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDashAfterImage.ToString()] = value;
+            }
+
+            public Color4 HyperDashFruitColour
+            {
+                get => Configuration.CustomColours[CatchSkinColour.HyperDashFruit.ToString()];
+                set => Configuration.CustomColours[CatchSkinColour.HyperDashFruit.ToString()] = value;
+            }
+
+            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

@@ -4,12 +4,12 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.Extensions;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
-using osu.Game.Scoring.Legacy;
 
 namespace osu.Game.Rulesets.Catch.Difficulty
 {
@@ -34,11 +34,11 @@ namespace osu.Game.Rulesets.Catch.Difficulty
         {
             mods = Score.Mods;
 
-            fruitsHit = Score?.GetCount300() ?? Score.Statistics[HitResult.Perfect];
-            ticksHit = Score?.GetCount100() ?? 0;
-            tinyTicksHit = Score?.GetCount50() ?? 0;
-            tinyTicksMissed = Score?.GetCountKatu() ?? 0;
-            misses = Score.Statistics[HitResult.Miss];
+            fruitsHit = Score.Statistics.GetOrDefault(HitResult.Perfect);
+            ticksHit = Score.Statistics.GetOrDefault(HitResult.LargeTickHit);
+            tinyTicksHit = Score.Statistics.GetOrDefault(HitResult.SmallTickHit);
+            tinyTicksMissed = Score.Statistics.GetOrDefault(HitResult.SmallTickMiss);
+            misses = Score.Statistics.GetOrDefault(HitResult.Miss);
 
             // Don't count scores made with supposedly unranked mods
             if (mods.Any(m => !m.Ranked))
@@ -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);
+                0.95 + 0.3 * Math.Min(1.0, numTotalHits / 2500.0) +
+                (numTotalHits > 2500 ? Math.Log10(numTotalHits / 2500.0) * 0.475 : 0.0);
 
             // 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 approachRate = Attributes.ApproachRate;
             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
+            if (approachRate > 9.0)
+                approachRateFactor += 0.1 * (approachRate - 9.0); // 10% for each AR above 9
+            if (approachRate > 10.0)
+                approachRateFactor += 0.1 * (approachRate - 10.0); // Additional 10% at AR 11, 30% total
+            else if (approachRate < 8.0)
+                approachRateFactor += 0.025 * (8.0 - 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 <= 10.0)
+                    value *= 1.05 + 0.075 * (10.0 - approachRate); // 7.5% for each AR below 10
+                else if (approachRate > 10.0)
+                    value *= 1.01 + 0.04 * (11.0 - Math.Min(11.0, 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.
@@ -91,7 +100,7 @@ namespace osu.Game.Rulesets.Catch.Difficulty
             return value;
         }
 
-        private float accuracy() => totalHits() == 0 ? 0 : Math.Clamp((float)totalSuccessfulHits() / totalHits(), 0, 1);
+        private double accuracy() => totalHits() == 0 ? 0 : Math.Clamp((double)totalSuccessfulHits() / totalHits(), 0, 1);
         private int totalHits() => tinyTicksHit + ticksHit + fruitsHit + misses + tinyTicksMissed;
         private int totalSuccessfulHits() => tinyTicksHit + ticksHit + fruitsHit;
         private int totalComboHits() => misses + ticksHit + fruitsHit;

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

@@ -9,17 +9,26 @@ 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)
         {
-            drawableRuleset.Cursor.Add(new MouseInputHelper((CatchPlayfield)drawableRuleset.Playfield));
+            this.drawableRuleset = drawableRuleset;
+        }
+
+        public void ApplyToPlayer(Player player)
+        {
+            if (!drawableRuleset.HasReplayLoaded.Value)
+                drawableRuleset.Cursor.Add(new MouseInputHelper((CatchPlayfield)drawableRuleset.Playfield));
         }
 
         private class MouseInputHelper : Drawable, IKeyBindingHandler<CatchAction>, IRequireHighFrequencyMousePosition
@@ -34,7 +43,7 @@ namespace osu.Game.Rulesets.Catch.Mods
                 RelativeSizeAxes = Axes.Both;
             }
 
-            //disable keyboard controls
+            // disable keyboard controls
             public bool OnPressed(CatchAction action) => true;
 
             public void OnReleased(CatchAction action)

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

@@ -7,6 +7,7 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
+using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Drawables;
 using osuTK.Graphics;
 
@@ -67,7 +68,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                     RelativeSizeAxes = Axes.Both,
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
-                    BorderColour = Color4.Red,
+                    BorderColour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
                     BorderThickness = 12f * RADIUS_ADJUST,
                     Children = new Drawable[]
                     {
@@ -77,7 +78,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
                             Alpha = 0.3f,
                             Blending = BlendingParameters.Additive,
                             RelativeSizeAxes = Axes.Both,
-                            Colour = Color4.Red,
+                            Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
                         }
                     }
                 });

osu.Game.Rulesets.Catch/Replays/CatchAutoGenerator.cs

@@ -55,7 +55,7 @@ namespace osu.Game.Rulesets.Catch.Replays
 
                 if (lastPosition - catcher_width_half < h.X && lastPosition + catcher_width_half > h.X)
                 {
-                    //we are already in the correct range.
+                    // we are already in the correct range.
                     lastTime = h.StartTime;
                     addFrame(h.StartTime, lastPosition);
                     return;
@@ -72,14 +72,14 @@ namespace osu.Game.Rulesets.Catch.Replays
                 }
                 else if (dashRequired)
                 {
-                    //we do a movement in two parts - the dash part then the normal part...
+                    // we do a movement in two parts - the dash part then the normal part...
                     double timeAtNormalSpeed = positionChange / movement_speed;
                     double timeWeNeedToSave = timeAtNormalSpeed - timeAvailable;
                     double timeAtDashSpeed = timeWeNeedToSave / 2;
 
                     float midPosition = (float)Interpolation.Lerp(lastPosition, h.X, (float)timeAtDashSpeed / timeAvailable);
 
-                    //dash movement
+                    // dash movement
                     addFrame(h.StartTime - timeAvailable + 1, lastPosition, true);
                     addFrame(h.StartTime - timeAvailable + timeAtDashSpeed, midPosition);
                     addFrame(h.StartTime, h.X);

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

@@ -16,7 +16,7 @@ namespace osu.Game.Rulesets.Catch.Skinning
     {
         private readonly ISkin source;
 
-        public CatchLegacySkinTransformer(ISkinSource source)
+        public CatchLegacySkinTransformer(ISkin source)
         {
             this.source = source;
         }
@@ -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

@@ -0,0 +1,23 @@
+// 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.Catch.Skinning
+{
+    public enum CatchSkinColour
+    {
+        /// <summary>
+        /// The colour to be used for the catcher while in hyper-dashing state.
+        /// </summary>
+        HyperDash,
+
+        /// <summary>
+        /// The colour to be used for fruits that grant the catcher the ability to hyper-dash.
+        /// </summary>
+        HyperDashFruit,
+
+        /// <summary>
+        /// The colour to be used for the "exploding" catcher sprite on beginning of hyper-dashing.
+        /// </summary>
+        HyperDashAfterImage,
+    }
+}

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

@@ -7,6 +7,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Skinning;
 using osuTK;
@@ -55,14 +56,16 @@ namespace osu.Game.Rulesets.Catch.Skinning
             {
                 var hyperDash = new Sprite
                 {
-                    Texture = skin.GetTexture(lookupName),
-                    Colour = Color4.Red,
                     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

@@ -3,24 +3,37 @@
 
 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;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Skinning;
 using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
-    public class Catcher : Container, IKeyBindingHandler<CatchAction>
+    public class Catcher : SkinReloadableDrawable, IKeyBindingHandler<CatchAction>
     {
+        /// <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.
         /// </summary>
@@ -33,7 +46,10 @@ namespace osu.Game.Rulesets.Catch.UI
 
         public Container ExplodingFruitTarget;
 
-        public Container AdditiveTarget;
+        [NotNull]
+        private readonly Container trailsTarget;
+
+        private CatcherTrailDisplay trails;
 
         public CatcherAnimationState CurrentState { get; private set; }
 
@@ -43,39 +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;
 
@@ -85,18 +91,19 @@ namespace osu.Game.Rulesets.Catch.UI
 
         private CatcherSprite currentCatcher;
 
+        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;
 
@@ -104,13 +111,15 @@ 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]
         private void load()
         {
-            Children = new Drawable[]
+            InternalChildren = new Drawable[]
             {
                 caughtFruit = new Container<DrawableHitObject>
                 {
@@ -134,9 +143,31 @@ namespace osu.Game.Rulesets.Catch.UI
                 }
             };
 
+            trailsTarget.Add(trails = new CatcherTrailDisplay(this));
+
             updateCatcher();
         }
 
+        /// <summary>
+        /// Calculates the scale of the catcher based off the provided beatmap difficulty.
+        /// </summary>
+        private static Vector2 calculateScale(BeatmapDifficulty difficulty)
+            => new Vector2(1.0f - 0.7f * (difficulty.CircleSize - 5) / 5);
+
+        /// <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;
+
+        /// <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.
         /// </summary>
@@ -161,7 +192,7 @@ namespace osu.Game.Rulesets.Catch.UI
 
             caughtFruit.Add(fruit);
 
-            Add(new HitExplosion(fruit)
+            AddInternal(new HitExplosion(fruit)
             {
                 X = fruit.X,
                 Scale = new Vector2(fruit.HitObject.Scale)
@@ -175,7 +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;
@@ -216,8 +247,6 @@ namespace osu.Game.Rulesets.Catch.UI
         /// <param name="targetPosition">When this catcher crosses this position, this catcher ends hyper-dashing.</param>
         public void SetHyperDashState(double modifier = 1, float targetPosition = -1)
         {
-            const float hyper_dash_transition_length = 180;
-
             var wasHyperDashing = HyperDashing;
 
             if (modifier <= 1 || X == targetPosition)
@@ -226,11 +255,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 hyperDashDirection = 0;
 
                 if (wasHyperDashing)
-                {
-                    this.FadeColour(Color4.White, hyper_dash_transition_length, Easing.OutQuint);
-                    this.FadeTo(1, hyper_dash_transition_length, Easing.OutQuint);
-                    Trail &= Dashing;
-                }
+                    runHyperDashStateTransition(false);
             }
             else
             {
@@ -240,20 +265,32 @@ namespace osu.Game.Rulesets.Catch.UI
 
                 if (!wasHyperDashing)
                 {
-                    this.FadeColour(Color4.OrangeRed, hyper_dash_transition_length, Easing.OutQuint);
-                    this.FadeTo(0.2f, hyper_dash_transition_length, Easing.OutQuint);
-                    Trail = true;
-
-                    var hyperDashEndGlow = createAdditiveSprite();
-
-                    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 runHyperDashStateTransition(bool hyperDashing)
+        {
+            trails.HyperDashTrailsColour = hyperDashColour;
+            trails.EndGlowSpritesColour = hyperDashEndGlowColour;
+            updateTrailVisibility();
+
+            if (hyperDashing)
+            {
+                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_DURATION, Easing.OutQuint);
+                this.FadeTo(1f, HYPER_DASH_TRANSITION_DURATION, Easing.OutQuint);
+            }
+        }
+
+        private void updateTrailVisibility() => trails.DisplayTrail = Dashing || HyperDashing;
+
         public bool OnPressed(CatchAction action)
         {
             switch (action)
@@ -342,6 +379,21 @@ namespace osu.Game.Rulesets.Catch.UI
             });
         }
 
+        protected override void SkinChanged(ISkinSource skin, bool allowFallback)
+        {
+            base.SkinChanged(skin, allowFallback);
+
+            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()
         {
             base.Update();
@@ -387,22 +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();
-
-            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)
@@ -412,25 +448,6 @@ namespace osu.Game.Rulesets.Catch.UI
             updateCatcher();
         }
 
-        private CatcherTrailSprite createAdditiveSprite()
-        {
-            var tex = (currentCatcher.Drawable as TextureAnimation)?.CurrentFrame ?? ((Sprite)currentCatcher.Drawable).Texture;
-
-            var sprite = new CatcherTrailSprite(tex)
-            {
-                Anchor = Anchor,
-                Scale = Scale,
-                Colour = HyperDashing ? Color4.Red : Color4.White,
-                Blending = BlendingParameters.Additive,
-                RelativePositionAxes = RelativePositionAxes,
-                Position = Position
-            };
-
-            AdditiveTarget?.Add(sprite);
-
-            return sprite;
-        }
-
         private void removeFromPlateWithTransform(DrawableHitObject fruit, Action<DrawableHitObject> action)
         {
             if (ExplodingFruitTarget != null)

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

@@ -33,10 +33,7 @@ namespace osu.Game.Rulesets.Catch.UI
         {
             RelativeSizeAxes = Axes.X;
             Height = CATCHER_SIZE;
-            Child = MovableCatcher = new Catcher(difficulty)
-            {
-                AdditiveTarget = 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

@@ -7,6 +7,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Timing;
+using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Edit;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.UI;
@@ -14,7 +15,6 @@ using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
-using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests
@@ -41,16 +41,20 @@ namespace osu.Game.Rulesets.Mania.Tests
                 AccentColour = Color4.OrangeRed,
                 Clock = new FramedClock(new StopwatchClock()), // No scroll
             });
+        }
 
-            AddStep("change direction", () => ((ScrollingTestContainer)HitObjectContainer).Flip());
+        protected override SnapResult SnapForBlueprint(PlacementBlueprint blueprint)
+        {
+            var time = column.TimeAtScreenSpacePosition(InputManager.CurrentState.Mouse.Position);
+            var pos = column.ScreenSpacePositionAtTime(time);
+
+            return new ManiaSnapResult(pos, time, column);
         }
 
         protected override Container CreateHitObjectContainer() => new ScrollingTestContainer(ScrollingDirection.Down) { RelativeSizeAxes = Axes.Both };
 
         protected override void AddHitObject(DrawableHitObject hitObject) => column.Add((DrawableManiaHitObject)hitObject);
 
-        public Column ColumnAt(Vector2 screenSpacePosition) => column;
-
-        public int TotalColumns => 1;
+        public ManiaPlayfield Playfield => null;
     }
 }

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

@@ -7,7 +7,6 @@ using osu.Framework.Timing;
 using osu.Game.Rulesets.Mania.Edit;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
-using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Mania.Tests
@@ -18,11 +17,9 @@ namespace osu.Game.Rulesets.Mania.Tests
         [Cached(Type = typeof(IAdjustableClock))]
         private readonly IAdjustableClock clock = new StopwatchClock();
 
-        private readonly Column column;
-
         protected ManiaSelectionBlueprintTestScene()
         {
-            Add(column = new Column(0)
+            Add(new Column(0)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
@@ -31,8 +28,6 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
         }
 
-        public Column ColumnAt(Vector2 screenSpacePosition) => column;
-
-        public int TotalColumns => 1;
+        public ManiaPlayfield Playfield => null;
     }
 }

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

@@ -1,15 +1,12 @@
 // 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;
@@ -27,13 +24,6 @@ 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()

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

@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
@@ -15,12 +14,6 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
     public class TestSceneDrawableJudgement : ManiaSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(DrawableJudgement),
-            typeof(DrawableManiaJudgement)
-        };
-
         public TestSceneDrawableJudgement()
         {
             foreach (HitResult result in Enum.GetValues(typeof(HitResult)).OfType<HitResult>().Skip(1))

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

@@ -1,15 +1,12 @@
 // 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.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Skinning;
@@ -21,12 +18,6 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
     [TestFixture]
     public class TestSceneHitExplosion : ManiaSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(DrawableNote),
-            typeof(DrawableManiaHitObject),
-        };
-
         public TestSceneHitExplosion()
         {
             int runcount = 0;

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

@@ -1,12 +1,9 @@
 // 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.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Rulesets.Mania.Skinning;
 using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Skinning;
 using osuTK;
@@ -15,12 +12,6 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
     public class TestSceneKeyArea : ManiaSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(DefaultKeyArea),
-            typeof(LegacyKeyArea)
-        };
-
         [BackgroundDependencyLoader]
         private void load()
         {

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

@@ -1,12 +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.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Mania.Skinning;
 using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Skinning;
 
@@ -14,12 +10,6 @@ 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()
         {

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

@@ -1,23 +1,14 @@
 // 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()
         {

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

@@ -12,7 +12,6 @@ using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.UI;
-using osu.Game.Rulesets.Mania.UI.Components;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
@@ -24,15 +23,6 @@ namespace osu.Game.Rulesets.Mania.Tests
     [TestFixture]
     public class TestSceneColumn : ManiaInputTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(Column),
-            typeof(ColumnBackground),
-            typeof(ColumnHitObjectArea),
-            typeof(DefaultKeyArea),
-            typeof(DefaultHitTarget)
-        };
-
         [Cached(typeof(IReadOnlyList<Mod>))]
         private IReadOnlyList<Mod> mods { get; set; } = Array.Empty<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/TestSceneManiaBeatSnapGrid.cs

@@ -0,0 +1,70 @@
+// 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.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Input.Events;
+using osu.Framework.Timing;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Configuration;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Edit;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Screens.Edit;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    [Cached(typeof(IManiaHitObjectComposer))]
+    public class TestSceneManiaBeatSnapGrid : EditorClockTestScene, IManiaHitObjectComposer
+    {
+        [Cached(typeof(IScrollingInfo))]
+        private ScrollingTestContainer.TestScrollingInfo scrollingInfo = new ScrollingTestContainer.TestScrollingInfo();
+
+        [Cached(typeof(EditorBeatmap))]
+        private EditorBeatmap editorBeatmap = new EditorBeatmap(new ManiaBeatmap(new StageDefinition()));
+
+        private readonly ManiaBeatSnapGrid beatSnapGrid;
+
+        public TestSceneManiaBeatSnapGrid()
+        {
+            editorBeatmap.ControlPointInfo.Add(0, new TimingControlPoint { BeatLength = 200 });
+            editorBeatmap.ControlPointInfo.Add(10000, new TimingControlPoint { BeatLength = 200 });
+
+            BeatDivisor.Value = 3;
+
+            // Some sane defaults
+            scrollingInfo.Algorithm.Algorithm = ScrollVisualisationMethod.Constant;
+            scrollingInfo.Direction.Value = ScrollingDirection.Up;
+            scrollingInfo.TimeRange.Value = 1000;
+
+            Children = new Drawable[]
+            {
+                Playfield = new ManiaPlayfield(new List<StageDefinition>
+                {
+                    new StageDefinition { Columns = 4 },
+                    new StageDefinition { Columns = 3 }
+                })
+                {
+                    Clock = new FramedClock(new StopwatchClock())
+                },
+                beatSnapGrid = new ManiaBeatSnapGrid()
+            };
+        }
+
+        protected override bool OnMouseMove(MouseMoveEvent e)
+        {
+            // We're providing a constant scroll algorithm.
+            float relativePosition = Playfield.Stages[0].HitObjectContainer.ToLocalSpace(e.ScreenSpaceMousePosition).Y / Playfield.Stages[0].HitObjectContainer.DrawHeight;
+            double timeValue = scrollingInfo.TimeRange.Value * relativePosition;
+
+            beatSnapGrid.SelectionTimeRange = (timeValue, timeValue);
+
+            return true;
+        }
+
+        public ManiaPlayfield Playfield { get; }
+    }
+}

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

@@ -0,0 +1,218 @@
+// 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.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
+    {
+        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;
+            double originalTime = 0;
+            Vector2 originalPosition = Vector2.Zero;
+
+            setScrollStep(ScrollingDirection.Up);
+
+            AddStep("seek to last object", () =>
+            {
+                lastObject = this.ChildrenOfType<DrawableHitObject>().Single(d => d.HitObject == composer.EditorBeatmap.HitObjects.Last());
+                originalTime = lastObject.HitObject.StartTime;
+                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, lastObject.ScreenSpaceDrawQuad.Height * 4));
+                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("hitobject has moved time", () => lastObject.HitObject.StartTime == originalTime + 125);
+        }
+
+        [Test]
+        public void TestDragOffscreenSelectionVerticallyDownScroll()
+        {
+            DrawableHitObject lastObject = null;
+            double originalTime = 0;
+            Vector2 originalPosition = Vector2.Zero;
+
+            setScrollStep(ScrollingDirection.Down);
+
+            AddStep("seek to last object", () =>
+            {
+                lastObject = this.ChildrenOfType<DrawableHitObject>().Single(d => d.HitObject == composer.EditorBeatmap.HitObjects.Last());
+                originalTime = lastObject.HitObject.StartTime;
+                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, -lastObject.ScreenSpaceDrawQuad.Height * 4));
+                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("hitobject has moved time", () => lastObject.HitObject.StartTime == originalTime + 125);
+        }
+
+        [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 = 125 * 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/TestSceneNotes.cs

@@ -1,8 +1,6 @@
 // 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;
@@ -30,12 +28,6 @@ namespace osu.Game.Rulesets.Mania.Tests
     [TestFixture]
     public class TestSceneNotes : OsuTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(DrawableNote),
-            typeof(DrawableHoldNote)
-        };
-
         [BackgroundDependencyLoader]
         private void load()
         {

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/Difficulty/ManiaPerformanceCalculator.cs

@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.Extensions;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
@@ -37,12 +38,12 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         {
             mods = Score.Mods;
             scaledScore = Score.TotalScore;
-            countPerfect = Score.Statistics[HitResult.Perfect];
-            countGreat = Score.Statistics[HitResult.Great];
-            countGood = Score.Statistics[HitResult.Good];
-            countOk = Score.Statistics[HitResult.Ok];
-            countMeh = Score.Statistics[HitResult.Meh];
-            countMiss = Score.Statistics[HitResult.Miss];
+            countPerfect = Score.Statistics.GetOrDefault(HitResult.Perfect);
+            countGreat = Score.Statistics.GetOrDefault(HitResult.Great);
+            countGood = Score.Statistics.GetOrDefault(HitResult.Good);
+            countOk = Score.Statistics.GetOrDefault(HitResult.Ok);
+            countMeh = Score.Statistics.GetOrDefault(HitResult.Meh);
+            countMiss = Score.Statistics.GetOrDefault(HitResult.Miss);
 
             if (mods.Any(m => !m.Ranked))
                 return 0;

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

@@ -2,10 +2,14 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Framework.Input.Events;
+using osu.Game.Rulesets.Edit;
 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
 {
@@ -15,6 +19,9 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
         private readonly EditNotePiece headPiece;
         private readonly EditNotePiece tailPiece;
 
+        [Resolved]
+        private IManiaHitObjectComposer composer { get; set; }
+
         public HoldNotePlacementBlueprint()
             : base(new HoldNote())
         {
@@ -34,8 +41,8 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 
             if (Column != null)
             {
-                headPiece.Y = PositionAt(HitObject.StartTime);
-                tailPiece.Y = PositionAt(HitObject.EndTime);
+                headPiece.Y = Parent.ToLocalSpace(Column.ScreenSpacePositionAtTime(HitObject.StartTime)).Y;
+                tailPiece.Y = Parent.ToLocalSpace(Column.ScreenSpacePositionAtTime(HitObject.EndTime)).Y;
             }
 
             var topPosition = new Vector2(headPiece.DrawPosition.X, Math.Min(headPiece.DrawPosition.Y, tailPiece.DrawPosition.Y));
@@ -46,25 +53,39 @@ 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)
+        public override void UpdatePosition(SnapResult result)
         {
-            base.UpdatePosition(screenSpacePosition);
+            base.UpdatePosition(result);
 
             if (PlacementActive)
             {
-                var endTime = TimeAt(screenSpacePosition);
-
-                HitObject.StartTime = endTime < originalStartTime ? endTime : originalStartTime;
-                HitObject.Duration = Math.Abs(endTime - originalStartTime);
+                if (result.Time is double endTime)
+                {
+                    HitObject.StartTime = endTime < originalStartTime ? endTime : originalStartTime;
+                    HitObject.Duration = Math.Abs(endTime - originalStartTime);
+                }
             }
             else
             {
-                headPiece.Width = tailPiece.Width = SnappedWidth;
-                headPiece.X = tailPiece.X = SnappedMousePosition.X;
+                if (result is ManiaSnapResult maniaResult)
+                {
+                    headPiece.Width = tailPiece.Width = maniaResult.Column.DrawWidth;
+                    headPiece.X = tailPiece.X = ToLocalSpace(result.ScreenSpacePosition).X;
+                }
 
-                originalStartTime = HitObject.StartTime = TimeAt(screenSpacePosition);
+                if (result.Time is double startTime)
+                    originalStartTime = HitObject.StartTime = startTime;
             }
         }
     }

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

@@ -76,5 +76,7 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
         }
 
         public override Quad SelectionQuad => ScreenSpaceDrawQuad;
+
+        public override Vector2 ScreenSpaceSelectionPoint => DrawableObject.Head.ScreenSpaceDrawQuad.Centre;
     }
 }

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

@@ -1,42 +1,34 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Input;
 using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Objects;
-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
 {
-    public abstract class ManiaPlacementBlueprint<T> : PlacementBlueprint,
-                                                       IRequireHighFrequencyMousePosition // the playfield could be moving behind us
+    public abstract class ManiaPlacementBlueprint<T> : PlacementBlueprint
         where T : ManiaHitObject
     {
         protected new T HitObject => (T)base.HitObject;
 
-        protected Column Column;
+        private Column column;
 
-        /// <summary>
-        /// The current mouse position, snapped to the closest column.
-        /// </summary>
-        protected Vector2 SnappedMousePosition { get; private set; }
+        public Column Column
+        {
+            get => column;
+            set
+            {
+                if (value == column)
+                    return;
 
-        /// <summary>
-        /// The width of the closest column to the current mouse position.
-        /// </summary>
-        protected float SnappedWidth { get; private set; }
-
-        [Resolved]
-        private IManiaHitObjectComposer composer { get; set; }
-
-        [Resolved]
-        private IScrollingInfo scrollingInfo { get; set; }
+                column = value;
+                HitObject.Column = column.Index;
+            }
+        }
 
         protected ManiaPlacementBlueprint(T hitObject)
             : base(hitObject)
@@ -46,112 +38,22 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 
         protected override bool OnMouseDown(MouseDownEvent e)
         {
-            if (Column == null)
-                return base.OnMouseDown(e);
+            if (e.Button != MouseButton.Left)
+                return false;
 
-            HitObject.Column = Column.Index;
-            BeginPlacement(TimeAt(e.ScreenSpaceMousePosition));
+            if (Column == null)
+                return false;
+
+            BeginPlacement(true);
             return true;
         }
 
-        protected override void OnMouseUp(MouseUpEvent e)
+        public override void UpdatePosition(SnapResult result)
         {
-            EndPlacement(true);
-            base.OnMouseUp(e);
-        }
+            base.UpdatePosition(result);
 
-        public override void UpdatePosition(Vector2 screenSpacePosition)
-        {
             if (!PlacementActive)
-                Column = ColumnAt(screenSpacePosition);
-
-            if (Column == null) return;
-
-            SnappedWidth = Column.DrawWidth;
-
-            // Snap to the column
-            var parentPos = Parent.ToLocalSpace(Column.ToScreenSpace(new Vector2(Column.DrawWidth / 2, 0)));
-            SnappedMousePosition = new Vector2(parentPos.X, Parent.ToLocalSpace(screenSpacePosition).Y);
-        }
-
-        protected double TimeAt(Vector2 screenSpacePosition)
-        {
-            if (Column == null)
-                return 0;
-
-            var hitObjectContainer = Column.HitObjectContainer;
-
-            // If we're scrolling downwards, a position of 0 is actually further away from the hit target
-            // so we need to flip the vertical coordinate in the hitobject container's space
-            var hitObjectPos = mouseToHitObjectPosition(Column.HitObjectContainer.ToLocalSpace(screenSpacePosition)).Y;
-            if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
-                hitObjectPos = hitObjectContainer.DrawHeight - hitObjectPos;
-
-            return scrollingInfo.Algorithm.TimeAt(hitObjectPos,
-                EditorClock.CurrentTime,
-                scrollingInfo.TimeRange.Value,
-                hitObjectContainer.DrawHeight);
-        }
-
-        protected float PositionAt(double time)
-        {
-            var pos = scrollingInfo.Algorithm.PositionAt(time,
-                EditorClock.CurrentTime,
-                scrollingInfo.TimeRange.Value,
-                Column.HitObjectContainer.DrawHeight);
-
-            if (scrollingInfo.Direction.Value == ScrollingDirection.Down)
-                pos = Column.HitObjectContainer.DrawHeight - pos;
-
-            return hitObjectToMousePosition(Column.HitObjectContainer.ToSpaceOfOtherDrawable(new Vector2(0, pos), Parent)).Y;
-        }
-
-        protected Column ColumnAt(Vector2 screenSpacePosition)
-            => composer.ColumnAt(screenSpacePosition);
-
-        /// <summary>
-        /// Converts a mouse position to a hitobject position.
-        /// </summary>
-        /// <remarks>
-        /// Blueprints are centred on the mouse position, such that the hitobject position is anchored at the top or bottom of the blueprint depending on the scroll direction.
-        /// </remarks>
-        /// <param name="mousePosition">The mouse position.</param>
-        /// <returns>The resulting hitobject position, acnhored at the top or bottom of the blueprint depending on the scroll direction.</returns>
-        private Vector2 mouseToHitObjectPosition(Vector2 mousePosition)
-        {
-            switch (scrollingInfo.Direction.Value)
-            {
-                case ScrollingDirection.Up:
-                    mousePosition.Y -= DefaultNotePiece.NOTE_HEIGHT / 2;
-                    break;
-
-                case ScrollingDirection.Down:
-                    mousePosition.Y += DefaultNotePiece.NOTE_HEIGHT / 2;
-                    break;
-            }
-
-            return mousePosition;
-        }
-
-        /// <summary>
-        /// Converts a hitobject position to a mouse position.
-        /// </summary>
-        /// <param name="hitObjectPosition">The hitobject position.</param>
-        /// <returns>The resulting mouse position, anchored at the centre of the hitobject.</returns>
-        private Vector2 hitObjectToMousePosition(Vector2 hitObjectPosition)
-        {
-            switch (scrollingInfo.Direction.Value)
-            {
-                case ScrollingDirection.Up:
-                    hitObjectPosition.Y += DefaultNotePiece.NOTE_HEIGHT / 2;
-                    break;
-
-                case ScrollingDirection.Down:
-                    hitObjectPosition.Y -= DefaultNotePiece.NOTE_HEIGHT / 2;
-                    break;
-            }
-
-            return hitObjectPosition;
+                Column = (result as ManiaSnapResult)?.Column;
         }
     }
 }

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

@@ -2,29 +2,48 @@
 // 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.Edit;
 using osu.Game.Rulesets.Mania.Edit.Blueprints.Components;
 using osu.Game.Rulesets.Mania.Objects;
+using osuTK.Input;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
     public class NotePlacementBlueprint : ManiaPlacementBlueprint<Note>
     {
+        private readonly EditNotePiece piece;
+
         public NotePlacementBlueprint()
             : base(new Note())
         {
-            Origin = Anchor.Centre;
+            RelativeSizeAxes = Axes.Both;
 
-            AutoSizeAxes = Axes.Y;
-
-            InternalChild = new EditNotePiece { RelativeSizeAxes = Axes.X };
+            InternalChild = piece = new EditNotePiece { Origin = Anchor.Centre };
         }
 
-        protected override void Update()
+        public override void UpdatePosition(SnapResult result)
         {
-            base.Update();
+            base.UpdatePosition(result);
 
-            Width = SnappedWidth;
-            Position = SnappedMousePosition;
+            if (result is ManiaSnapResult maniaResult)
+            {
+                piece.Width = maniaResult.Column.DrawWidth;
+                piece.Position = ToLocalSpace(result.ScreenSpacePosition);
+            }
+        }
+
+        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/IManiaHitObjectComposer.cs

@@ -2,14 +2,11 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Rulesets.Mania.UI;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Edit
 {
     public interface IManiaHitObjectComposer
     {
-        Column ColumnAt(Vector2 screenSpacePosition);
-
-        int TotalColumns { get; }
+        ManiaPlayfield Playfield { get; }
     }
 }

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

@@ -0,0 +1,213 @@
+// 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.Bindables;
+using osu.Framework.Caching;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Beatmaps;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Screens.Edit;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Mania.Edit
+{
+    /// <summary>
+    /// A grid which displays coloured beat divisor lines in proximity to the selection or placement cursor.
+    /// </summary>
+    public class ManiaBeatSnapGrid : Component
+    {
+        private const double visible_range = 750;
+
+        /// <summary>
+        /// The range of time values of the current selection.
+        /// </summary>
+        public (double start, double end)? SelectionTimeRange
+        {
+            set
+            {
+                if (value == selectionTimeRange)
+                    return;
+
+                selectionTimeRange = value;
+                lineCache.Invalidate();
+            }
+        }
+
+        [Resolved]
+        private EditorBeatmap beatmap { get; set; }
+
+        [Resolved]
+        private IScrollingInfo scrollingInfo { get; set; }
+
+        [Resolved]
+        private Bindable<WorkingBeatmap> working { get; set; }
+
+        [Resolved]
+        private OsuColour colours { get; set; }
+
+        [Resolved]
+        private BindableBeatDivisor beatDivisor { get; set; }
+
+        private readonly List<ScrollingHitObjectContainer> grids = new List<ScrollingHitObjectContainer>();
+
+        private readonly Cached lineCache = new Cached();
+
+        private (double start, double end)? selectionTimeRange;
+
+        [BackgroundDependencyLoader]
+        private void load(IManiaHitObjectComposer composer)
+        {
+            foreach (var stage in composer.Playfield.Stages)
+            {
+                foreach (var column in stage.Columns)
+                {
+                    var lineContainer = new ScrollingHitObjectContainer();
+
+                    grids.Add(lineContainer);
+                    column.UnderlayElements.Add(lineContainer);
+                }
+            }
+
+            beatDivisor.BindValueChanged(_ => createLines(), true);
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (!lineCache.IsValid)
+            {
+                lineCache.Validate();
+                createLines();
+            }
+        }
+
+        private readonly Stack<DrawableGridLine> availableLines = new Stack<DrawableGridLine>();
+
+        private void createLines()
+        {
+            foreach (var grid in grids)
+            {
+                foreach (var line in grid.Objects.OfType<DrawableGridLine>())
+                    availableLines.Push(line);
+
+                grid.Clear(false);
+            }
+
+            if (selectionTimeRange == null)
+                return;
+
+            var range = selectionTimeRange.Value;
+
+            var timingPoint = beatmap.ControlPointInfo.TimingPointAt(range.start - visible_range);
+
+            double time = timingPoint.Time;
+            int beat = 0;
+
+            // progress time until in the visible range.
+            while (time < range.start - visible_range)
+            {
+                time += timingPoint.BeatLength / beatDivisor.Value;
+                beat++;
+            }
+
+            while (time < range.end + visible_range)
+            {
+                var nextTimingPoint = beatmap.ControlPointInfo.TimingPointAt(time);
+
+                // switch to the next timing point if we have reached it.
+                if (nextTimingPoint.Time > timingPoint.Time)
+                {
+                    beat = 0;
+                    time = nextTimingPoint.Time;
+                    timingPoint = nextTimingPoint;
+                }
+
+                Color4 colour = BindableBeatDivisor.GetColourFor(
+                    BindableBeatDivisor.GetDivisorForBeatIndex(Math.Max(1, beat), beatDivisor.Value), colours);
+
+                foreach (var grid in grids)
+                {
+                    if (!availableLines.TryPop(out var line))
+                        line = new DrawableGridLine();
+
+                    line.HitObject.StartTime = time;
+                    line.Colour = colour;
+
+                    grid.Add(line);
+                }
+
+                beat++;
+                time += timingPoint.BeatLength / beatDivisor.Value;
+            }
+
+            foreach (var grid in grids)
+            {
+                // required to update ScrollingHitObjectContainer's cache.
+                grid.UpdateSubTree();
+
+                foreach (var line in grid.Objects.OfType<DrawableGridLine>())
+                {
+                    time = line.HitObject.StartTime;
+
+                    if (time >= range.start && time <= range.end)
+                        line.Alpha = 1;
+                    else
+                    {
+                        double timeSeparation = time < range.start ? range.start - time : time - range.end;
+                        line.Alpha = (float)Math.Max(0, 1 - timeSeparation / visible_range);
+                    }
+                }
+            }
+        }
+
+        private class DrawableGridLine : DrawableHitObject
+        {
+            [Resolved]
+            private IScrollingInfo scrollingInfo { get; set; }
+
+            private readonly IBindable<ScrollingDirection> direction = new Bindable<ScrollingDirection>();
+
+            public DrawableGridLine()
+                : base(new HitObject())
+            {
+                RelativeSizeAxes = Axes.X;
+                Height = 2;
+
+                AddInternal(new Box { RelativeSizeAxes = Axes.Both });
+            }
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                direction.BindTo(scrollingInfo.Direction);
+                direction.BindValueChanged(onDirectionChanged, true);
+            }
+
+            private void onDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
+            {
+                Origin = Anchor = direction.NewValue == ScrollingDirection.Up
+                    ? Anchor.TopLeft
+                    : Anchor.BottomLeft;
+            }
+
+            protected override void UpdateInitialTransforms()
+            {
+                // don't perform any fading – we are handling that ourselves.
+            }
+
+            protected override void UpdateStateTransforms(ArmedState state)
+            {
+                LifetimeEnd = HitObject.StartTime + visible_range;
+            }
+        }
+    }
+}

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

@@ -6,10 +6,14 @@ using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Mania.Objects;
 using System.Collections.Generic;
+using System.Linq;
 using osu.Framework.Allocation;
+using osu.Framework.Input;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Screens.Edit.Compose.Components;
 using osuTK;
 
@@ -19,25 +23,53 @@ namespace osu.Game.Rulesets.Mania.Edit
     public class ManiaHitObjectComposer : HitObjectComposer<ManiaHitObject>, IManiaHitObjectComposer
     {
         private DrawableManiaEditRuleset drawableRuleset;
+        private ManiaBeatSnapGrid beatSnapGrid;
+        private InputManager inputManager;
 
         public ManiaHitObjectComposer(Ruleset ruleset)
             : base(ruleset)
         {
         }
 
-        /// <summary>
-        /// Retrieves the column that intersects a screen-space position.
-        /// </summary>
-        /// <param name="screenSpacePosition">The screen-space position.</param>
-        /// <returns>The column which intersects with <paramref name="screenSpacePosition"/>.</returns>
-        public Column ColumnAt(Vector2 screenSpacePosition) => drawableRuleset.GetColumnByPosition(screenSpacePosition);
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            AddInternal(beatSnapGrid = new ManiaBeatSnapGrid());
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            inputManager = GetContainingInputManager();
+        }
 
         private DependencyContainer dependencies;
 
         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 override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
+        {
+            var column = Playfield.GetColumnByPosition(screenSpacePosition);
+
+            if (column == null)
+                return new SnapResult(screenSpacePosition, null);
+
+            double targetTime = column.TimeAtScreenSpacePosition(screenSpacePosition);
+
+            // apply beat snapping
+            targetTime = BeatSnapProvider.SnapTime(targetTime);
+
+            // convert back to screen space
+            screenSpacePosition = column.ScreenSpacePositionAtTime(targetTime);
+
+            return new ManiaSnapResult(screenSpacePosition, targetTime, column);
+        }
 
         protected override DrawableRuleset<ManiaHitObject> CreateDrawableRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
         {
@@ -56,5 +88,28 @@ namespace osu.Game.Rulesets.Mania.Edit
             new NoteCompositionTool(),
             new HoldNoteCompositionTool()
         };
+
+        protected override void UpdateAfterChildren()
+        {
+            base.UpdateAfterChildren();
+
+            if (BlueprintContainer.CurrentTool is SelectTool)
+            {
+                if (EditorBeatmap.SelectedHitObjects.Any())
+                {
+                    beatSnapGrid.SelectionTimeRange = (EditorBeatmap.SelectedHitObjects.Min(h => h.StartTime), EditorBeatmap.SelectedHitObjects.Max(h => h.GetEndTime()));
+                }
+                else
+                    beatSnapGrid.SelectionTimeRange = null;
+            }
+            else
+            {
+                var result = SnapScreenSpacePositionToValidTime(inputManager.CurrentState.Mouse.Position);
+                if (result.Time is double time)
+                    beatSnapGrid.SelectionTimeRange = (time, time);
+                else
+                    beatSnapGrid.SelectionTimeRange = 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;
 
@@ -22,88 +19,19 @@ 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);
+            var currentColumn = composer.Playfield.GetColumnByPosition(moveEvent.ScreenSpacePosition);
             if (currentColumn == null)
                 return;
 
@@ -122,7 +50,7 @@ namespace osu.Game.Rulesets.Mania.Edit
                     maxColumn = obj.Column;
             }
 
-            columnDelta = Math.Clamp(columnDelta, -minColumn, composer.TotalColumns - 1 - maxColumn);
+            columnDelta = Math.Clamp(columnDelta, -minColumn, composer.Playfield.TotalColumns - 1 - maxColumn);
 
             foreach (var obj in SelectedHitObjects.OfType<ManiaHitObject>())
                 obj.Column += columnDelta;

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

@@ -0,0 +1,20 @@
+// 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.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Mania.UI;
+using osuTK;
+
+namespace osu.Game.Rulesets.Mania.Edit
+{
+    public class ManiaSnapResult : SnapResult
+    {
+        public readonly Column Column;
+
+        public ManiaSnapResult(Vector2 screenSpacePosition, double time, Column column)
+            : base(screenSpacePosition, time)
+        {
+            Column = column;
+        }
+    }
+}

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/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

@@ -13,11 +13,6 @@ 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>
@@ -54,7 +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;
@@ -28,7 +30,9 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 duration = value;
-                Tail.StartTime = EndTime;
+
+                if (Tail != null)
+                    Tail.StartTime = EndTime;
             }
         }
 
@@ -38,8 +42,12 @@ namespace osu.Game.Rulesets.Mania.Objects
             set
             {
                 base.StartTime = value;
-                Head.StartTime = value;
-                Tail.StartTime = EndTime;
+
+                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;
-                Head.Column = value;
-                Tail.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/Scoring/ManiaHitWindows.cs

@@ -7,5 +7,20 @@ namespace osu.Game.Rulesets.Mania.Scoring
 {
     public class ManiaHitWindows : HitWindows
     {
+        public override bool IsHitResultAllowed(HitResult result)
+        {
+            switch (result)
+            {
+                case HitResult.Perfect:
+                case HitResult.Great:
+                case HitResult.Good:
+                case HitResult.Ok:
+                case HitResult.Meh:
+                case HitResult.Miss:
+                    return true;
+            }
+
+            return false;
+        }
     }
 }

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

@@ -67,6 +67,7 @@ namespace osu.Game.Rulesets.Mania.Skinning
                 {
                     RelativeSizeAxes = Axes.Y,
                     Width = leftLineWidth,
+                    Scale = new Vector2(0.740f, 1),
                     Colour = lineColour,
                     Alpha = hasLeftLine ? 1 : 0
                 },
@@ -76,6 +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
                 },

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

@@ -17,6 +17,7 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Skinning;
 using osuTK;
 using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Objects.Drawables.Pieces;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -37,6 +38,8 @@ namespace osu.Game.Rulesets.Mania.UI
 
         internal readonly Container TopLevelContainer;
 
+        public Container UnderlayElements => hitObjectArea.UnderlayElements;
+
         public Column(int index)
         {
             Index = index;
@@ -140,5 +143,54 @@ 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(Stage.COLUMN_SPACING / 2, 0)).Contains(ToLocalSpace(screenSpacePos));
+
+        /// <summary>
+        /// Given a time, return the screen space position within this column.
+        /// </summary>
+        public Vector2 ScreenSpacePositionAtTime(double time)
+        {
+            var pos = ScrollingInfo.Algorithm.PositionAt(time, Time.Current, ScrollingInfo.TimeRange.Value, HitObjectContainer.DrawHeight);
+
+            switch (ScrollingInfo.Direction.Value)
+            {
+                case 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.
+                    pos = HitObjectContainer.DrawHeight - pos;
+
+                    // Blueprints are centred on the mouse position, such that the hitobject position is anchored at the top or bottom of the blueprint depending on the scroll direction.
+                    pos -= DefaultNotePiece.NOTE_HEIGHT / 2;
+                    break;
+
+                case ScrollingDirection.Up:
+                    pos += DefaultNotePiece.NOTE_HEIGHT / 2;
+                    break;
+            }
+
+            return HitObjectContainer.ToScreenSpace(new Vector2(HitObjectContainer.DrawWidth / 2, pos));
+        }
+
+        /// <summary>
+        /// Given a position in screen space, return the time within this column.
+        /// </summary>
+        public double TimeAtScreenSpacePosition(Vector2 screenSpacePosition)
+        {
+            // convert to local space of column so we can snap and fetch correct location.
+            Vector2 localPosition = HitObjectContainer.ToLocalSpace(screenSpacePosition);
+
+            switch (ScrollingInfo.Direction.Value)
+            {
+                case ScrollingDirection.Down:
+                    // as above
+                    localPosition.Y = HitObjectContainer.DrawHeight - localPosition.Y;
+                    break;
+            }
+
+            // offset for the fact that blueprints are centered, as above.
+            localPosition.Y -= DefaultNotePiece.NOTE_HEIGHT / 2;
+
+            return ScrollingInfo.Algorithm.TimeAt(localPosition.Y, Time.Current, ScrollingInfo.TimeRange.Value, HitObjectContainer.DrawHeight);
+        }
     }
 }

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

@@ -12,6 +12,9 @@ namespace osu.Game.Rulesets.Mania.UI.Components
     public class ColumnHitObjectArea : HitObjectArea
     {
         public readonly Container Explosions;
+
+        public readonly Container UnderlayElements;
+
         private readonly Drawable hitTarget;
 
         public ColumnHitObjectArea(int columnIndex, HitObjectContainer hitObjectContainer)
@@ -19,6 +22,11 @@ namespace osu.Game.Rulesets.Mania.UI.Components
         {
             AddRangeInternal(new[]
             {
+                UnderlayElements = new Container
+                {
+                    RelativeSizeAxes = Axes.Both,
+                    Depth = 2,
+                },
                 hitTarget = new SkinnableDrawable(new ManiaSkinComponent(ManiaSkinComponents.HitTarget, columnIndex), _ => new DefaultHitTarget())
                 {
                     RelativeSizeAxes = Axes.X,

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;
@@ -21,7 +23,6 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
-using osuTK;
 
 namespace osu.Game.Rulesets.Mania.UI
 {
@@ -48,6 +49,10 @@ 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)
@@ -58,6 +63,9 @@ 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)
@@ -76,7 +84,7 @@ 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)
@@ -86,16 +94,18 @@ 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;
         }
 
-        /// <summary>
-        /// Retrieves the column that intersects a screen-space position.
-        /// </summary>
-        /// <param name="screenSpacePosition">The screen-space position.</param>
-        /// <returns>The column which intersects with <paramref name="screenSpacePosition"/>.</returns>
-        public Column GetColumnByPosition(Vector2 screenSpacePosition) => Playfield.GetColumnByPosition(screenSpacePosition);
+        protected override void Update()
+        {
+            base.Update();
+
+            updateTimeRange();
+        }
+
+        private void updateTimeRange() => TimeRange.Value = configTimeRange.Value * speedAdjustmentTrack.AggregateTempo.Value * speedAdjustmentTrack.AggregateFrequency.Value;
 
         public override PlayfieldAdjustmentContainer CreatePlayfieldAdjustmentContainer() => new ManiaPlayfieldAdjustmentContainer();
 

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

@@ -18,6 +18,8 @@ namespace osu.Game.Rulesets.Mania.UI
     [Cached]
     public class ManiaPlayfield : ScrollingPlayfield
     {
+        public IReadOnlyList<Stage> Stages => stages;
+
         private readonly List<Stage> stages = new List<Stage>();
 
         public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => stages.Any(s => s.ReceivePositionalInputAt(screenSpacePos));
@@ -73,7 +75,7 @@ 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;
@@ -87,6 +89,31 @@ 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>

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

@@ -1,21 +1,12 @@
 // 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

@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
@@ -15,12 +14,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneDrawableJudgement : OsuSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(DrawableJudgement),
-            typeof(DrawableOsuJudgement)
-        }).ToList();
-
         public TestSceneDrawableJudgement()
         {
             foreach (HitResult result in Enum.GetValues(typeof(HitResult)).OfType<HitResult>().Skip(1))

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

@@ -2,16 +2,12 @@
 // 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.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 osuTK;
 
@@ -20,16 +16,6 @@ namespace osu.Game.Rulesets.Osu.Tests
     [TestFixture]
     public class TestSceneGameplayCursor : OsuSkinnableTestScene
     {
-        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

@@ -8,8 +8,6 @@ using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osuTK;
-using System.Collections.Generic;
-using System;
 using osu.Game.Rulesets.Mods;
 using System.Linq;
 using NUnit.Framework;
@@ -20,11 +18,6 @@ namespace osu.Game.Rulesets.Osu.Tests
     [TestFixture]
     public class TestSceneHitCircle : OsuSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(DrawableHitCircle)
-        };
-
         private int depthIndex;
 
         public TestSceneHitCircle()

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

@@ -1,9 +1,6 @@
 // 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.Game.Rulesets.Osu.Mods;
 
@@ -12,8 +9,6 @@ namespace osu.Game.Rulesets.Osu.Tests
     [TestFixture]
     public class TestSceneHitCircleHidden : TestSceneHitCircle
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[] { typeof(OsuModHidden) }).ToList();
-
         [SetUp]
         public void SetUp() => Schedule(() =>
         {

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

@@ -2,7 +2,6 @@
 // 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.Graphics;
@@ -16,7 +15,6 @@ using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Edit;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
-using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Tests.Visual;
 using osuTK;
 using osuTK.Graphics;
@@ -28,18 +26,13 @@ namespace osu.Game.Rulesets.Osu.Tests
         private const double beat_length = 100;
         private static readonly Vector2 grid_position = new Vector2(512, 384);
 
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(CircularDistanceSnapGrid)
-        };
-
         [Cached(typeof(EditorBeatmap))]
         private readonly EditorBeatmap editorBeatmap;
 
         [Cached]
         private readonly BindableBeatDivisor beatDivisor = new BindableBeatDivisor();
 
-        [Cached(typeof(IDistanceSnapProvider))]
+        [Cached(typeof(IPositionSnapProvider))]
         private readonly SnapProvider snapProvider = new SnapProvider();
 
         private TestOsuDistanceSnapGrid grid;
@@ -179,9 +172,9 @@ namespace osu.Game.Rulesets.Osu.Tests
             }
         }
 
-        private class SnapProvider : IDistanceSnapProvider
+        private class SnapProvider : IPositionSnapProvider
         {
-            public (Vector2 position, double time) GetSnappedPosition(Vector2 position, double time) => (position, time);
+            public SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition) => new SnapResult(screenSpacePosition, 0);
 
             public float GetBeatSnapDistanceAt(double referenceTime) => (float)beat_length;
 

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

@@ -296,6 +296,44 @@ namespace osu.Game.Rulesets.Osu.Tests
             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}",
@@ -316,7 +354,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 
         private ScoreAccessibleReplayPlayer currentPlayer;
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         private void performTest(List<OsuHitObject> hitObjects, List<ReplayFrame> frames)
         {
@@ -342,20 +379,15 @@ 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 TestHitCircle : HitCircle
@@ -367,10 +399,13 @@ namespace osu.Game.Rulesets.Osu.Tests
         {
             public TestSlider()
             {
-                DefaultsApplied += () =>
+                DefaultsApplied += _ =>
                 {
                     HeadCircle.HitWindows = new TestHitWindows();
                     TailCircle.HitWindows = new TestHitWindows();
+
+                    HeadCircle.HitWindows.SetDifficulty(0);
+                    TailCircle.HitWindows.SetDifficulty(0);
                 };
             }
         }

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

@@ -1,10 +1,7 @@
 // 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;
@@ -19,13 +16,6 @@ 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;
 

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

@@ -1,8 +1,6 @@
 // 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.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
@@ -14,11 +12,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneResumeOverlay : OsuManualInputManagerTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(OsuResumeOverlay),
-        };
-
         public TestSceneResumeOverlay()
         {
             ManualOsuInputManager osuInputManager;

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

@@ -1,7 +1,6 @@
 // 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.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -21,29 +20,12 @@ using osu.Game.Rulesets.Judgements;
 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;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
     [TestFixture]
     public class TestSceneSlider : OsuSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(Slider),
-            typeof(SliderTick),
-            typeof(SliderTailCircle),
-            typeof(SliderBall),
-            typeof(SliderBody),
-            typeof(SnakingSliderBody),
-            typeof(DrawableSlider),
-            typeof(DrawableSliderTick),
-            typeof(DrawableSliderTail),
-            typeof(DrawableSliderHead),
-            typeof(DrawableSliderRepeat),
-            typeof(DrawableOsuHitObject)
-        };
-
         private Container content;
 
         protected override Container<Drawable> Content

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

@@ -1,9 +1,6 @@
 // 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.Game.Rulesets.Osu.Mods;
 
@@ -12,8 +9,6 @@ namespace osu.Game.Rulesets.Osu.Tests
     [TestFixture]
     public class TestSceneSliderHidden : TestSceneSlider
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[] { typeof(OsuModHidden) }).ToList();
-
         [SetUp]
         public void SetUp() => Schedule(() =>
         {

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

@@ -1,7 +1,6 @@
 // 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;
@@ -13,8 +12,6 @@ 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.Objects.Drawables;
-using osu.Game.Rulesets.Osu.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Osu.Replays;
 using osu.Game.Rulesets.Replays;
 using osu.Game.Rulesets.Scoring;
@@ -27,17 +24,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneSliderInput : RateAdjustedBeatmapTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(SliderBall),
-            typeof(DrawableSlider),
-            typeof(DrawableSliderTick),
-            typeof(DrawableSliderRepeat),
-            typeof(DrawableOsuHitObject),
-            typeof(DrawableSliderHead),
-            typeof(DrawableSliderTail),
-        };
-
         private const double time_before_slider = 250;
         private const double time_slider_start = 1500;
         private const double time_during_slide_1 = 2500;
@@ -47,7 +33,6 @@ namespace osu.Game.Rulesets.Osu.Tests
         private const double time_slider_end = 4000;
 
         private List<JudgementResult> judgementResults;
-        private bool allJudgedFired;
 
         /// <summary>
         /// Scenario:
@@ -375,20 +360,15 @@ 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

@@ -259,6 +259,23 @@ namespace osu.Game.Rulesets.Osu.Tests
             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)

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

@@ -1,8 +1,6 @@
 // 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.Utils;
 using osu.Game.Beatmaps;
@@ -22,16 +20,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneSliderSelectionBlueprint : SelectionBlueprintTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(SliderSelectionBlueprint),
-            typeof(SliderCircleSelectionBlueprint),
-            typeof(SliderBodyPiece),
-            typeof(SliderCircle),
-            typeof(PathControlPointVisualiser),
-            typeof(PathControlPointPiece)
-        };
-
         private Slider slider;
         private DrawableSlider drawableObject;
         private TestSliderBlueprint blueprint;

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

@@ -1,8 +1,6 @@
 // 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.Graphics;
@@ -12,7 +10,6 @@ using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
-using osu.Game.Rulesets.Osu.Objects.Drawables.Pieces;
 using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Osu.Tests
@@ -20,13 +17,6 @@ namespace osu.Game.Rulesets.Osu.Tests
     [TestFixture]
     public class TestSceneSpinner : OsuTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(SpinnerDisc),
-            typeof(DrawableSpinner),
-            typeof(DrawableOsuHitObject)
-        };
-
         private readonly Container content;
         protected override Container<Drawable> Content => content;