Merge pull request #9195 from peppy/fix-multi-chat-history

Fix chat history not being loaded for multiplayer matches

README.md

@@ -15,6 +15,8 @@ Rhythm is just a *click* away. The future of [osu!](https://osu.ppy.sh) and the
 
 This project is under heavy development, but is in a stable state. Users are encouraged to try it out and keep it installed alongside the stable *osu!* client. It will continue to evolve to the point of eventually replacing the existing stable client as an update.
 
+**IMPORTANT:** Gameplay mechanics (and other features which you may have come to know and love) are in a constant state of flux. Game balance and final quality-of-life passses come at the end of development, preceeded by experimentation and changes which may potentially **reduce playability or usability**. This is done in order to allow us to move forward as developers and designers more efficiently. If this offends you, please consider sticking to the stable releases of osu! (found on the website). We are not yet open to heated discussion over game mechanics and will not be using github as a forum for such discussions just yet.
+
 We are accepting bug reports (please report with as much detail as possible and follow the existing issue templates). Feature requests are also welcome, but understand that our focus is on completing the game to feature parity before adding new features. A few resources are available as starting points to getting involved and understanding the project:
 
 - Detailed release changelogs are available on the [official osu! site](https://osu.ppy.sh/home/changelog/lazer).

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.512.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.511.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.602.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.601.0" />
   </ItemGroup>
 </Project>

osu.Desktop/Program.cs

@@ -33,13 +33,11 @@ namespace osu.Desktop
                     if (args.Length > 0 && args[0].Contains('.')) // easy way to check for a file import in args
                     {
                         var importer = new ArchiveImportIPCChannel(host);
-                        // Restore the cwd so relative paths given at the command line work correctly
-                        Directory.SetCurrentDirectory(cwd);
 
                         foreach (var file in args)
                         {
                             Console.WriteLine(@"Importing {0}", file);
-                            if (!importer.ImportAsync(Path.GetFullPath(file)).Wait(3000))
+                            if (!importer.ImportAsync(Path.GetFullPath(file, cwd)).Wait(3000))
                                 throw new TimeoutException(@"IPC took too long to send");
                         }
 

osu.Game.Benchmarks/BenchmarkBeatmapParsing.cs

@@ -8,7 +8,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.Formats;
 using osu.Game.IO;
 using osu.Game.IO.Archives;
-using osu.Game.Resources;
+using osu.Game.Tests.Resources;
 
 namespace osu.Game.Benchmarks
 {
@@ -18,8 +18,8 @@ namespace osu.Game.Benchmarks
 
         public override void SetUp()
         {
-            using (var resources = new DllResourceStore(OsuResources.ResourceAssembly))
-            using (var archive = resources.GetStream("Beatmaps/241526 Soleily - Renatus.osz"))
+            using (var resources = new DllResourceStore(typeof(TestResources).Assembly))
+            using (var archive = resources.GetStream("Resources/Archives/241526 Soleily - Renatus.osz"))
             using (var reader = new ZipArchiveReader(archive))
                 reader.GetStream("Soleily - Renatus (Gamu) [Insane].osu").CopyTo(beatmapStream);
         }

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

@@ -13,6 +13,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\osu.Game.Tests\osu.Game.Tests.csproj" />
     <ProjectReference Include="..\osu.Game\osu.Game.csproj" />
   </ItemGroup>
 

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/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

@@ -4,9 +4,6 @@
 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;
 
@@ -15,12 +12,6 @@ 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()
         {

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/Beatmaps/CatchBeatmapConverter.cs

@@ -28,7 +28,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
             switch (obj)
             {
-                case IHasCurve curveData:
+                case IHasPathWithRepeats curveData:
                     return new JuiceStream
                     {
                         StartTime = obj.StartTime,
@@ -42,7 +42,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                         LegacyLastTickOffset = (obj as IHasLegacyLastTickOffset)?.LegacyLastTickOffset ?? 0
                     }.Yield();
 
-                case IHasEndTime endTime:
+                case IHasDuration endTime:
                     return new BananaShower
                     {
                         StartTime = obj.StartTime,

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 =
-                0.95f + 0.3f * Math.Min(1.0f, numTotalHits / 2500.0f) +
-                (numTotalHits > 2500 ? (float)Math.Log10(numTotalHits / 2500.0f) * 0.475f : 0.0f);
+                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;
@@ -65,14 +65,14 @@ namespace osu.Game.Rulesets.Catch.Difficulty
             if (Attributes.MaxCombo > 0)
                 value *= Math.Min(Math.Pow(Score.MaxCombo, 0.8) / Math.Pow(Attributes.MaxCombo, 0.8), 1.0);
 
-            float approachRate = (float)Attributes.ApproachRate;
-            float approachRateFactor = 1.0f;
-            if (approachRate > 9.0f)
-                approachRateFactor += 0.1f * (approachRate - 9.0f); // 10% for each AR above 9
-            if (approachRate > 10.0f)
-                approachRateFactor += 0.1f * (approachRate - 10.0f); // Additional 10% at AR 11, 30% total
-            else if (approachRate < 8.0f)
-                approachRateFactor += 0.025f * (8.0f - approachRate); // 2.5% for each AR below 8
+            double approachRate = Attributes.ApproachRate;
+            double approachRateFactor = 1.0;
+            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;
 
@@ -80,10 +80,10 @@ namespace osu.Game.Rulesets.Catch.Difficulty
             {
                 value *= 1.05 + 0.075 * (10.0 - Math.Min(10.0, Attributes.ApproachRate)); // 7.5% for each AR below 10
                 // Hiddens gives almost nothing on max approach rate, and more the lower it is
-                if (approachRate <= 10.0f)
-                    value *= 1.05f + 0.075f * (10.0f - approachRate); // 7.5% for each AR below 10
-                else if (approachRate > 10.0f)
-                    value *= 1.01f + 0.04f * (11.0f - Math.Min(11.0f, approachRate)); // 5% at AR 10, 1% at AR 11
+                if (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))
@@ -100,7 +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/Objects/BananaShower.cs

@@ -1,12 +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.
 
+using System.Threading;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
-    public class BananaShower : CatchHitObject, IHasEndTime
+    public class BananaShower : CatchHitObject, IHasDuration
     {
         public override FruitVisualRepresentation VisualRepresentation => FruitVisualRepresentation.Banana;
 
@@ -14,13 +15,13 @@ namespace osu.Game.Rulesets.Catch.Objects
 
         public override Judgement CreateJudgement() => new IgnoreJudgement();
 
-        protected override void CreateNestedHitObjects()
+        protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
         {
-            base.CreateNestedHitObjects();
-            createBananas();
+            base.CreateNestedHitObjects(cancellationToken);
+            createBananas(cancellationToken);
         }
 
-        private void createBananas()
+        private void createBananas(CancellationToken cancellationToken)
         {
             double spacing = Duration;
             while (spacing > 100)
@@ -31,6 +32,8 @@ namespace osu.Game.Rulesets.Catch.Objects
 
             for (double i = StartTime; i <= EndTime; i += spacing)
             {
+                cancellationToken.ThrowIfCancellationRequested();
+
                 AddNested(new Banana
                 {
                     Samples = Samples,

osu.Game.Rulesets.Catch/Objects/JuiceStream.cs

@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -13,7 +14,7 @@ using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
-    public class JuiceStream : CatchHitObject, IHasCurve
+    public class JuiceStream : CatchHitObject, IHasPathWithRepeats
     {
         /// <summary>
         /// Positional distance that results in a duration of one second, before any speed adjustments.
@@ -45,9 +46,9 @@ namespace osu.Game.Rulesets.Catch.Objects
             TickDistance = scoringDistance / difficulty.SliderTickRate;
         }
 
-        protected override void CreateNestedHitObjects()
+        protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
         {
-            base.CreateNestedHitObjects();
+            base.CreateNestedHitObjects(cancellationToken);
 
             var dropletSamples = Samples.Select(s => new HitSampleInfo
             {
@@ -58,7 +59,7 @@ namespace osu.Game.Rulesets.Catch.Objects
 
             SliderEventDescriptor? lastEvent = null;
 
-            foreach (var e in SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset))
+            foreach (var e in SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken))
             {
                 // generate tiny droplets since the last point
                 if (lastEvent != null)
@@ -73,6 +74,8 @@ namespace osu.Game.Rulesets.Catch.Objects
 
                         for (double t = timeBetweenTiny; t < sinceLastTick; t += timeBetweenTiny)
                         {
+                            cancellationToken.ThrowIfCancellationRequested();
+
                             AddNested(new TinyDroplet
                             {
                                 StartTime = t + lastEvent.Value.Time,
@@ -112,15 +115,15 @@ namespace osu.Game.Rulesets.Catch.Objects
             }
         }
 
-        public double EndTime
+        public float EndX => X + this.CurvePositionAt(1).X / CatchPlayfield.BASE_WIDTH;
+
+        public double Duration
         {
-            get => StartTime + this.SpanCount() * Path.Distance / Velocity;
+            get => this.SpanCount() * Path.Distance / Velocity;
             set => throw new System.NotSupportedException($"Adjust via {nameof(RepeatCount)} instead"); // can be implemented if/when needed.
         }
 
-        public float EndX => X + this.CurvePositionAt(1).X / CatchPlayfield.BASE_WIDTH;
-
-        public double Duration => EndTime - StartTime;
+        public double EndTime => StartTime + Duration;
 
         private readonly SliderPath path = new SliderPath();
 

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

@@ -7,20 +7,18 @@ using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Timing;
-using osu.Game.Rulesets.Mania.Edit;
+using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Mania.UI;
 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
 {
-    [Cached(Type = typeof(IManiaHitObjectComposer))]
-    public abstract class ManiaPlacementBlueprintTestScene : PlacementBlueprintTestScene, IManiaHitObjectComposer
+    public abstract class ManiaPlacementBlueprintTestScene : PlacementBlueprintTestScene
     {
         private readonly Column column;
 
@@ -43,12 +41,18 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
         }
 
+        protected override SnapResult SnapForBlueprint(PlacementBlueprint blueprint)
+        {
+            var time = column.TimeAtScreenSpacePosition(InputManager.CurrentState.Mouse.Position);
+            var pos = column.ScreenSpacePositionAtTime(time);
+
+            return new SnapResult(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

@@ -4,25 +4,20 @@
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 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
 {
-    [Cached(Type = typeof(IManiaHitObjectComposer))]
-    public abstract class ManiaSelectionBlueprintTestScene : SelectionBlueprintTestScene, IManiaHitObjectComposer
+    public abstract class ManiaSelectionBlueprintTestScene : SelectionBlueprintTestScene
     {
         [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 +26,6 @@ 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/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/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/TestSceneManiaBeatSnapGrid.cs

@@ -0,0 +1,124 @@
+// 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.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.Edit;
+using osu.Game.Rulesets.Mania.Beatmaps;
+using osu.Game.Rulesets.Mania.Edit;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Screens.Edit;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Mania.Tests
+{
+    public class TestSceneManiaBeatSnapGrid : EditorClockTestScene
+    {
+        [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())
+                },
+                new TestHitObjectComposer(Playfield)
+                {
+                    Child = 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; }
+    }
+
+    public class TestHitObjectComposer : HitObjectComposer
+    {
+        public override Playfield Playfield { get; }
+        public override IEnumerable<DrawableHitObject> HitObjects => Enumerable.Empty<DrawableHitObject>();
+        public override bool CursorInPlacementArea => false;
+
+        public TestHitObjectComposer(Playfield playfield)
+        {
+            Playfield = playfield;
+        }
+
+        public Drawable Child
+        {
+            set => InternalChild = value;
+        }
+
+        public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public override float GetBeatSnapDistanceAt(double referenceTime)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public override float DurationToDistance(double referenceTime, double duration)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public override double DistanceToDuration(double referenceTime, float distance)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public override double GetSnappedDurationFromDistance(double referenceTime, float distance)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public override float GetSnappedDistanceFromDistance(double referenceTime, float distance)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+}

osu.Game.Rulesets.Mania.Tests/TestSceneManiaHitObjectComposer.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;
@@ -29,11 +27,6 @@ namespace osu.Game.Rulesets.Mania.Tests
 {
     public class TestSceneManiaHitObjectComposer : EditorClockTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(ManiaBlueprintContainer)
-        };
-
         private TestComposer composer;
 
         [SetUp]
@@ -49,6 +42,7 @@ namespace osu.Game.Rulesets.Mania.Tests
         public void TestDragOffscreenSelectionVerticallyUpScroll()
         {
             DrawableHitObject lastObject = null;
+            double originalTime = 0;
             Vector2 originalPosition = Vector2.Zero;
 
             setScrollStep(ScrollingDirection.Up);
@@ -56,6 +50,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             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);
             });
 
@@ -71,19 +66,20 @@ namespace osu.Game.Rulesets.Mania.Tests
 
             AddStep("move mouse downwards", () =>
             {
-                InputManager.MoveMouseTo(lastObject, new Vector2(0, 20));
+                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("hitobjects not moved too far", () => lastObject.DrawPosition.Y - originalPosition.Y < 50);
+            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);
@@ -91,6 +87,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             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);
             });
 
@@ -106,13 +103,13 @@ namespace osu.Game.Rulesets.Mania.Tests
 
             AddStep("move mouse upwards", () =>
             {
-                InputManager.MoveMouseTo(lastObject, new Vector2(0, -20));
+                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("hitobjects not moved too far", () => originalPosition.Y - lastObject.DrawPosition.Y < 50);
+            AddAssert("hitobject has moved time", () => lastObject.HitObject.StartTime == originalTime + 125);
         }
 
         [Test]
@@ -214,7 +211,7 @@ namespace osu.Game.Rulesets.Mania.Tests
                 };
 
                 for (int i = 0; i < 10; i++)
-                    EditorBeatmap.Add(new Note { StartTime = 100 * i });
+                    EditorBeatmap.Add(new Note { StartTime = 125 * i });
             }
         }
     }

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()
         {
@@ -164,7 +156,7 @@ namespace osu.Game.Rulesets.Mania.Tests
 
                 foreach (var obj in content.OfType<DrawableHitObject>())
                 {
-                    if (!(obj.HitObject is IHasEndTime endTime))
+                    if (!(obj.HitObject is IHasDuration endTime))
                         continue;
 
                     foreach (var nested in obj.NestedHitObjects)

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

@@ -54,7 +54,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             }
             else
             {
-                float percentSliderOrSpinner = (float)beatmap.HitObjects.Count(h => h is IHasEndTime) / beatmap.HitObjects.Count;
+                float percentSliderOrSpinner = (float)beatmap.HitObjects.Count(h => h is IHasDuration) / beatmap.HitObjects.Count;
                 if (percentSliderOrSpinner < 0.2)
                     TargetColumns = 7;
                 else if (percentSliderOrSpinner < 0.3 || roundedCircleSize >= 5)
@@ -175,7 +175,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                     break;
                 }
 
-                case IHasEndTime endTimeData:
+                case IHasDuration endTimeData:
                 {
                     conversion = new EndTimeObjectPatternGenerator(Random, original, beatmap, originalBeatmap);
 
@@ -231,7 +231,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 var pattern = new Pattern();
 
-                if (HitObject is IHasEndTime endTimeData)
+                if (HitObject is IHasDuration endTimeData)
                 {
                     pattern.Add(new HoldNote
                     {

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

@@ -474,7 +474,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <returns></returns>
         private IList<HitSampleInfo> sampleInfoListAt(double time)
         {
-            if (!(HitObject is IHasCurve curveData))
+            if (!(HitObject is IHasPathWithRepeats curveData))
                 return HitObject.Samples;
 
             double segmentTime = (EndTime - HitObject.StartTime) / spanCount;

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

@@ -19,7 +19,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, IBeatmap originalBeatmap)
             : base(random, hitObject, beatmap, new Pattern(), originalBeatmap)
         {
-            endTime = (HitObject as IHasEndTime)?.EndTime ?? 0;
+            endTime = (HitObject as IHasDuration)?.EndTime ?? 0;
         }
 
         public override IEnumerable<Pattern> Generate()

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/Edit/Blueprints/HoldNotePlacementBlueprint.cs

@@ -2,10 +2,13 @@
 // 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 osu.Game.Rulesets.UI.Scrolling;
 using osuTK;
 using osuTK.Input;
 
@@ -17,6 +20,9 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
         private readonly EditNotePiece headPiece;
         private readonly EditNotePiece tailPiece;
 
+        [Resolved]
+        private IScrollingInfo scrollingInfo { get; set; }
+
         public HoldNotePlacementBlueprint()
             : base(new HoldNote())
         {
@@ -36,8 +42,21 @@ 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;
+
+                switch (scrollingInfo.Direction.Value)
+                {
+                    case ScrollingDirection.Down:
+                        headPiece.Y -= headPiece.DrawHeight / 2;
+                        tailPiece.Y -= tailPiece.DrawHeight / 2;
+                        break;
+
+                    case ScrollingDirection.Up:
+                        headPiece.Y += headPiece.DrawHeight / 2;
+                        tailPiece.Y += tailPiece.DrawHeight / 2;
+                        break;
+                }
             }
 
             var topPosition = new Vector2(headPiece.DrawPosition.X, Math.Min(headPiece.DrawPosition.Y, tailPiece.DrawPosition.Y));
@@ -59,23 +78,28 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 
         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.Playfield != null)
+                {
+                    headPiece.Width = tailPiece.Width = result.Playfield.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

@@ -77,6 +77,6 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 
         public override Quad SelectionQuad => ScreenSpaceDrawQuad;
 
-        public override Vector2 SelectionPoint => DrawableObject.Head.ScreenSpaceDrawQuad.Centre;
+        public override Vector2 ScreenSpaceSelectionPoint => DrawableObject.Head.ScreenSpaceDrawQuad.Centre;
     }
 }

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

@@ -1,43 +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)
@@ -51,105 +42,18 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
                 return false;
 
             if (Column == null)
-                return base.OnMouseDown(e);
+                return false;
 
-            HitObject.Column = Column.Index;
-            BeginPlacement(TimeAt(e.ScreenSpaceMousePosition), true);
+            BeginPlacement(true);
             return true;
         }
 
-        public override void UpdatePosition(Vector2 screenSpacePosition)
+        public override void UpdatePosition(SnapResult result)
         {
+            base.UpdatePosition(result);
+
             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.Playfield as Column;
         }
     }
 }

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

@@ -11,17 +11,14 @@ using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 {
-    public class ManiaSelectionBlueprint : OverlaySelectionBlueprint
+    public abstract class ManiaSelectionBlueprint : OverlaySelectionBlueprint
     {
         public new DrawableManiaHitObject DrawableObject => (DrawableManiaHitObject)base.DrawableObject;
 
         [Resolved]
         private IScrollingInfo scrollingInfo { get; set; }
 
-        [Resolved]
-        private IManiaHitObjectComposer composer { get; set; }
-
-        public ManiaSelectionBlueprint(DrawableHitObject drawableObject)
+        protected ManiaSelectionBlueprint(DrawableHitObject drawableObject)
             : base(drawableObject)
         {
             RelativeSizeAxes = Axes.None;

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

@@ -3,6 +3,7 @@
 
 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;
@@ -11,22 +12,25 @@ 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.Playfield != null)
+            {
+                piece.Width = result.Playfield.DrawWidth;
+                piece.Position = ToLocalSpace(result.ScreenSpacePosition);
+            }
         }
 
         protected override bool OnMouseDown(MouseDownEvent e)

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

@@ -1,15 +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.Game.Rulesets.Mania.UI;
-using osuTK;
-
-namespace osu.Game.Rulesets.Mania.Edit
-{
-    public interface IManiaHitObjectComposer
-    {
-        Column ColumnAt(Vector2 screenSpacePosition);
-
-        int TotalColumns { get; }
-    }
-}

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

@@ -0,0 +1,215 @@
+// 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.Edit;
+using osu.Game.Rulesets.Mania.UI;
+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(HitObjectComposer composer)
+        {
+            foreach (var stage in ((ManiaPlayfield)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/ManiaHitObjectComposer.cs

@@ -6,9 +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.Objects.Drawables.Pieces;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Rulesets.Mods;
+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.Screens.Edit.Compose.Components;
@@ -16,56 +21,64 @@ using osuTK;
 
 namespace osu.Game.Rulesets.Mania.Edit
 {
-    [Cached(Type = typeof(IManiaHitObjectComposer))]
-    public class ManiaHitObjectComposer : HitObjectComposer<ManiaHitObject>, IManiaHitObjectComposer
+    public class ManiaHitObjectComposer : HitObjectComposer<ManiaHitObject>
     {
         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 ManiaPlayfield Playfield => ((ManiaPlayfield)drawableRuleset.Playfield);
+        public new ManiaPlayfield Playfield => ((ManiaPlayfield)drawableRuleset.Playfield);
 
         public IScrollingInfo ScrollingInfo => drawableRuleset.ScrollingInfo;
 
-        public int TotalColumns => Playfield.TotalColumns;
+        protected override Playfield PlayfieldAtScreenSpacePosition(Vector2 screenSpacePosition) =>
+            Playfield.GetColumnByPosition(screenSpacePosition);
 
-        public override (Vector2 position, double time) GetSnappedPosition(Vector2 position, double time)
+        public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
         {
-            var hoc = Playfield.GetColumn(0).HitObjectContainer;
+            var result = base.SnapScreenSpacePositionToValidTime(screenSpacePosition);
 
-            float targetPosition = hoc.ToLocalSpace(ToScreenSpace(position)).Y;
-
-            if (drawableRuleset.ScrollingInfo.Direction.Value == ScrollingDirection.Down)
+            switch (ScrollingInfo.Direction.Value)
             {
-                // We're dealing with screen coordinates in which the position decreases towards the centre of the screen resulting in an increase in start time.
-                // The scrolling algorithm instead assumes a top anchor meaning an increase in time corresponds to an increase in position,
-                // so when scrolling downwards the coordinates need to be flipped.
-                targetPosition = hoc.DrawHeight - targetPosition;
+                case ScrollingDirection.Down:
+                    result.ScreenSpacePosition -= new Vector2(0, getNoteHeight() / 2);
+                    break;
+
+                case ScrollingDirection.Up:
+                    result.ScreenSpacePosition += new Vector2(0, getNoteHeight() / 2);
+                    break;
             }
 
-            double targetTime = drawableRuleset.ScrollingInfo.Algorithm.TimeAt(targetPosition,
-                EditorClock.CurrentTime,
-                drawableRuleset.ScrollingInfo.TimeRange.Value,
-                hoc.DrawHeight);
-
-            return base.GetSnappedPosition(position, targetTime);
+            return result;
         }
 
+        private float getNoteHeight() =>
+            Playfield.GetColumn(0).ToScreenSpace(new Vector2(DefaultNotePiece.NOTE_HEIGHT)).Y -
+            Playfield.GetColumn(0).ToScreenSpace(Vector2.Zero).Y;
+
         protected override DrawableRuleset<ManiaHitObject> CreateDrawableRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
         {
             drawableRuleset = new DrawableManiaEditRuleset(ruleset, beatmap, mods);
@@ -76,12 +89,36 @@ namespace osu.Game.Rulesets.Mania.Edit
             return drawableRuleset;
         }
 
-        protected override ComposeBlueprintContainer CreateBlueprintContainer() => new ManiaBlueprintContainer(drawableRuleset.Playfield.AllHitObjects);
+        protected override ComposeBlueprintContainer CreateBlueprintContainer(IEnumerable<DrawableHitObject> hitObjects)
+            => new ManiaBlueprintContainer(hitObjects);
 
         protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => new HitObjectCompositionTool[]
         {
             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

@@ -4,6 +4,7 @@
 using System;
 using System.Linq;
 using osu.Framework.Allocation;
+using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.UI.Scrolling;
@@ -17,7 +18,7 @@ namespace osu.Game.Rulesets.Mania.Edit
         private IScrollingInfo scrollingInfo { get; set; }
 
         [Resolved]
-        private IManiaHitObjectComposer composer { get; set; }
+        private HitObjectComposer composer { get; set; }
 
         public override bool HandleMovement(MoveSelectionEvent moveEvent)
         {
@@ -31,7 +32,9 @@ namespace osu.Game.Rulesets.Mania.Edit
 
         private void performColumnMovement(int lastColumn, MoveSelectionEvent moveEvent)
         {
-            var currentColumn = composer.ColumnAt(moveEvent.ScreenSpacePosition);
+            var maniaPlayfield = ((ManiaHitObjectComposer)composer).Playfield;
+
+            var currentColumn = maniaPlayfield.GetColumnByPosition(moveEvent.ScreenSpacePosition);
             if (currentColumn == null)
                 return;
 
@@ -50,7 +53,7 @@ namespace osu.Game.Rulesets.Mania.Edit
                     maxColumn = obj.Column;
             }
 
-            columnDelta = Math.Clamp(columnDelta, -minColumn, composer.TotalColumns - 1 - maxColumn);
+            columnDelta = Math.Clamp(columnDelta, -minColumn, maniaPlayfield.TotalColumns - 1 - maxColumn);
 
             foreach (var obj in SelectedHitObjects.OfType<ManiaHitObject>())
                 obj.Column += columnDelta;

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

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Threading;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@@ -14,7 +15,7 @@ namespace osu.Game.Rulesets.Mania.Objects
     /// <summary>
     /// Represents a hit object which requires pressing, holding, and releasing a key.
     /// </summary>
-    public class HoldNote : ManiaHitObject, IHasEndTime
+    public class HoldNote : ManiaHitObject, IHasDuration
     {
         public double EndTime
         {
@@ -91,11 +92,11 @@ namespace osu.Game.Rulesets.Mania.Objects
             tickSpacing = timingPoint.BeatLength / difficulty.SliderTickRate;
         }
 
-        protected override void CreateNestedHitObjects()
+        protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
         {
-            base.CreateNestedHitObjects();
+            base.CreateNestedHitObjects(cancellationToken);
 
-            createTicks();
+            createTicks(cancellationToken);
 
             AddNested(Head = new Note
             {
@@ -112,13 +113,15 @@ namespace osu.Game.Rulesets.Mania.Objects
             });
         }
 
-        private void createTicks()
+        private void createTicks(CancellationToken cancellationToken)
         {
             if (tickSpacing == 0)
                 return;
 
             for (double t = StartTime + tickSpacing; t <= EndTime - tickSpacing; t += tickSpacing)
             {
+                cancellationToken.ThrowIfCancellationRequested();
+
                 AddNested(new HoldNoteTick
                 {
                     StartTime = t,

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/Skinning/LegacyStageBackground.cs

@@ -52,10 +52,10 @@ namespace osu.Game.Rulesets.Mania.Skinning
             base.Update();
 
             if (leftSprite?.Height > 0)
-                leftSprite.Scale = new Vector2(DrawHeight / leftSprite.Height);
+                leftSprite.Scale = new Vector2(1, DrawHeight / leftSprite.Height);
 
             if (rightSprite?.Height > 0)
-                rightSprite.Scale = new Vector2(DrawHeight / rightSprite.Height);
+                rightSprite.Scale = new Vector2(1, DrawHeight / rightSprite.Height);
         }
     }
 }

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

@@ -37,6 +37,8 @@ namespace osu.Game.Rulesets.Mania.UI
 
         internal readonly Container TopLevelContainer;
 
+        public Container UnderlayElements => hitObjectArea.UnderlayElements;
+
         public Column(int index)
         {
             Index = index;

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

@@ -23,7 +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
 {
@@ -108,13 +107,6 @@ namespace osu.Game.Rulesets.Mania.UI
 
         private void updateTimeRange() => TimeRange.Value = configTimeRange.Value * speedAdjustmentTrack.AggregateTempo.Value * speedAdjustmentTrack.AggregateFrequency.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);
-
         public override PlayfieldAdjustmentContainer CreatePlayfieldAdjustmentContainer() => new ManiaPlayfieldAdjustmentContainer();
 
         protected override Playfield CreatePlayfield() => new ManiaPlayfield(Beatmap.Stages);

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));

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/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;

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;
 

osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerHidden.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 TestSceneSpinnerHidden : TestSceneSpinner
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[] { typeof(OsuModHidden) }).ToList();
-
         [SetUp]
         public void SetUp() => Schedule(() =>
         {

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

@@ -1,14 +1,11 @@
 // 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.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners;
-using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Tests.Visual;
@@ -18,12 +15,6 @@ namespace osu.Game.Rulesets.Osu.Tests
 {
     public class TestSceneSpinnerSelectionBlueprint : SelectionBlueprintTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(SpinnerSelectionBlueprint),
-            typeof(SpinnerPiece)
-        };
-
         public TestSceneSpinnerSelectionBlueprint()
         {
             var spinner = new Spinner

osu.Game.Rulesets.Osu.Tests/TestSceneSpinnerSpunOut.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.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.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
@@ -20,14 +17,6 @@ namespace osu.Game.Rulesets.Osu.Tests
     [TestFixture]
     public class TestSceneSpinnerSpunOut : OsuTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(SpinnerDisc),
-            typeof(DrawableSpinner),
-            typeof(DrawableOsuHitObject),
-            typeof(OsuModSpunOut)
-        };
-
         [SetUp]
         public void SetUp() => Schedule(() =>
         {

osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs

@@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
 
             switch (original)
             {
-                case IHasCurve curveData:
+                case IHasPathWithRepeats curveData:
                     return new Slider
                     {
                         StartTime = original.StartTime,
@@ -46,7 +46,7 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
                         TickDistanceMultiplier = beatmap.BeatmapInfo.BeatmapVersion < 8 ? 1f / beatmap.ControlPointInfo.DifficultyPointAt(original.StartTime).SpeedMultiplier : 1
                     }.Yield();
 
-                case IHasEndTime endTimeData:
+                case IHasDuration endTimeData:
                     return new Spinner
                     {
                         StartTime = original.StartTime,

osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.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;
@@ -45,10 +46,10 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             mods = Score.Mods;
             accuracy = Score.Accuracy;
             scoreMaxCombo = Score.MaxCombo;
-            countGreat = Score.Statistics[HitResult.Great];
-            countGood = Score.Statistics[HitResult.Good];
-            countMeh = Score.Statistics[HitResult.Meh];
-            countMiss = Score.Statistics[HitResult.Miss];
+            countGreat = Score.Statistics.GetOrDefault(HitResult.Great);
+            countGood = Score.Statistics.GetOrDefault(HitResult.Good);
+            countMeh = Score.Statistics.GetOrDefault(HitResult.Meh);
+            countMiss = Score.Statistics.GetOrDefault(HitResult.Miss);
 
             // Don't count scores made with supposedly unranked mods
             if (mods.Any(m => !m.Ranked))
@@ -180,7 +181,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             int amountHitObjectsWithAccuracy = countHitCircles;
 
             if (amountHitObjectsWithAccuracy > 0)
-                betterAccuracyPercentage = ((countGreat - (totalHits - amountHitObjectsWithAccuracy)) * 6 + countGood * 2 + countMeh) / (amountHitObjectsWithAccuracy * 6);
+                betterAccuracyPercentage = ((countGreat - (totalHits - amountHitObjectsWithAccuracy)) * 6 + countGood * 2 + countMeh) / (double)(amountHitObjectsWithAccuracy * 6);
             else
                 betterAccuracyPercentage = 0;
 
@@ -203,7 +204,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             return accuracyValue;
         }
 
-        private double totalHits => countGreat + countGood + countMeh + countMiss;
-        private double totalSuccessfulHits => countGreat + countGood + countMeh;
+        private int totalHits => countGreat + countGood + countMeh + countMiss;
+        private int totalSuccessfulHits => countGreat + countGood + countMeh;
     }
 }

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

@@ -5,7 +5,6 @@ using osu.Framework.Input.Events;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles.Components;
 using osu.Game.Rulesets.Osu.Objects;
-using osuTK;
 using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
@@ -40,6 +39,10 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
             return base.OnMouseDown(e);
         }
 
-        public override void UpdatePosition(Vector2 screenSpacePosition) => HitObject.Position = ToLocalSpace(screenSpacePosition);
+        public override void UpdatePosition(SnapResult result)
+        {
+            base.UpdatePosition(result);
+            HitObject.Position = ToLocalSpace(result.ScreenSpacePosition);
+        }
     }
 }

osu.Game.Rulesets.Osu/Edit/Blueprints/OsuSelectionBlueprint.cs

@@ -12,6 +12,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints
     {
         protected new T HitObject => (T)DrawableObject.HitObject;
 
+        protected override bool AlwaysShowWhenSelected => true;
+
         protected OsuSelectionBlueprint(DrawableHitObject drawableObject)
             : base(drawableObject)
         {

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

@@ -38,7 +38,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         private IEditorChangeHandler changeHandler { get; set; }
 
         [Resolved(CanBeNull = true)]
-        private IDistanceSnapProvider snapProvider { get; set; }
+        private IPositionSnapProvider snapProvider { get; set; }
 
         [Resolved]
         private OsuColour colours { get; set; }
@@ -162,11 +162,12 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
             if (ControlPoint == slider.Path.ControlPoints[0])
             {
                 // Special handling for the head control point - the position of the slider changes which means the snapped position and time have to be taken into account
-                (Vector2 snappedPosition, double snappedTime) = snapProvider?.GetSnappedPosition(e.MousePosition, slider.StartTime) ?? (e.MousePosition, slider.StartTime);
-                Vector2 movementDelta = snappedPosition - slider.Position;
+                var result = snapProvider?.SnapScreenSpacePositionToValidTime(e.ScreenSpaceMousePosition);
+
+                Vector2 movementDelta = Parent.ToLocalSpace(result?.ScreenSpacePosition ?? e.ScreenSpaceMousePosition) - slider.Position;
 
                 slider.Position += movementDelta;
-                slider.StartTime = snappedTime;
+                slider.StartTime = result?.Time ?? slider.StartTime;
 
                 // Since control points are relative to the position of the slider, they all need to be offset backwards by the delta
                 for (int i = 1; i < slider.Path.ControlPoints.Count; i++)

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderPlacementBlueprint.cs

@@ -67,13 +67,15 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             inputManager = GetContainingInputManager();
         }
 
-        public override void UpdatePosition(Vector2 screenSpacePosition)
+        public override void UpdatePosition(SnapResult result)
         {
+            base.UpdatePosition(result);
+
             switch (state)
             {
                 case PlacementState.Initial:
                     BeginPlacement();
-                    HitObject.Position = ToLocalSpace(screenSpacePosition);
+                    HitObject.Position = ToLocalSpace(result.ScreenSpacePosition);
                     break;
 
                 case PlacementState.Body:

osu.Game.Rulesets.Osu/Edit/Blueprints/Sliders/SliderSelectionBlueprint.cs

@@ -190,7 +190,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             new OsuMenuItem("Add control point", MenuItemType.Standard, () => addControlPoint(rightClickPosition)),
         };
 
-        public override Vector2 SelectionPoint => ((DrawableSlider)DrawableObject).HeadCircle.ScreenSpaceDrawQuad.Centre;
+        public override Vector2 ScreenSpaceSelectionPoint => ((DrawableSlider)DrawableObject).HeadCircle.ScreenSpaceDrawQuad.Centre;
 
         public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => BodyPiece.ReceivePositionalInputAt(screenSpacePos);
 

osu.Game.Rulesets.Osu/Edit/Blueprints/Spinners/SpinnerPlacementBlueprint.cs

@@ -8,7 +8,6 @@ using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners.Components;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
-using osuTK;
 using osuTK.Input;
 
 namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners
@@ -60,9 +59,5 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Spinners
 
             return true;
         }
-
-        public override void UpdatePosition(Vector2 screenSpacePosition)
-        {
-        }
     }
 }

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

@@ -4,14 +4,20 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Caching;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Edit.Tools;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.UI;
 using osu.Game.Screens.Edit.Compose.Components;
+using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
 {
@@ -32,9 +38,81 @@ namespace osu.Game.Rulesets.Osu.Edit
             new SpinnerCompositionTool()
         };
 
-        protected override ComposeBlueprintContainer CreateBlueprintContainer() => new OsuBlueprintContainer(HitObjects);
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            LayerBelowRuleset.Add(distanceSnapGridContainer = new Container { RelativeSizeAxes = Axes.Both });
 
-        protected override DistanceSnapGrid CreateDistanceSnapGrid(IEnumerable<HitObject> selectedHitObjects)
+            EditorBeatmap.SelectedHitObjects.CollectionChanged += (_, __) => updateDistanceSnapGrid();
+            EditorBeatmap.PlacementObject.ValueChanged += _ => updateDistanceSnapGrid();
+        }
+
+        protected override ComposeBlueprintContainer CreateBlueprintContainer(IEnumerable<DrawableHitObject> hitObjects)
+            => new OsuBlueprintContainer(hitObjects);
+
+        private DistanceSnapGrid distanceSnapGrid;
+        private Container distanceSnapGridContainer;
+
+        private readonly Cached distanceSnapGridCache = new Cached();
+        private double? lastDistanceSnapGridTime;
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (!(BlueprintContainer.CurrentTool is SelectTool))
+            {
+                if (EditorClock.CurrentTime != lastDistanceSnapGridTime)
+                {
+                    distanceSnapGridCache.Invalidate();
+                    lastDistanceSnapGridTime = EditorClock.CurrentTime;
+                }
+
+                if (!distanceSnapGridCache.IsValid)
+                    updateDistanceSnapGrid();
+            }
+        }
+
+        public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
+        {
+            if (distanceSnapGrid == null)
+                return base.SnapScreenSpacePositionToValidTime(screenSpacePosition);
+
+            (Vector2 pos, double time) = distanceSnapGrid.GetSnappedPosition(distanceSnapGrid.ToLocalSpace(screenSpacePosition));
+
+            return new SnapResult(distanceSnapGrid.ToScreenSpace(pos), time, PlayfieldAtScreenSpacePosition(screenSpacePosition));
+        }
+
+        private void updateDistanceSnapGrid()
+        {
+            distanceSnapGridContainer.Clear();
+            distanceSnapGridCache.Invalidate();
+
+            switch (BlueprintContainer.CurrentTool)
+            {
+                case SelectTool _:
+                    if (!EditorBeatmap.SelectedHitObjects.Any())
+                        return;
+
+                    distanceSnapGrid = createDistanceSnapGrid(EditorBeatmap.SelectedHitObjects);
+                    break;
+
+                default:
+                    if (!CursorInPlacementArea)
+                        return;
+
+                    distanceSnapGrid = createDistanceSnapGrid(Enumerable.Empty<HitObject>());
+                    break;
+            }
+
+            if (distanceSnapGrid != null)
+            {
+                distanceSnapGridContainer.Add(distanceSnapGrid);
+                distanceSnapGridCache.Validate();
+            }
+        }
+
+        private DistanceSnapGrid createDistanceSnapGrid(IEnumerable<HitObject> selectedHitObjects)
         {
             if (BlueprintContainer.CurrentTool is SpinnerCompositionTool)
                 return null;
@@ -42,7 +120,8 @@ namespace osu.Game.Rulesets.Osu.Edit
             var objects = selectedHitObjects.ToList();
 
             if (objects.Count == 0)
-                return createGrid(h => h.StartTime <= EditorClock.CurrentTime);
+                // use accurate time value to give more instantaneous feedback to the user.
+                return createGrid(h => h.StartTime <= EditorClock.CurrentTimeAccurate);
 
             double minTime = objects.Min(h => h.StartTime);
             return createGrid(h => h.StartTime < minTime, objects.Count + 1);

osu.Game.Rulesets.Osu/Mods/OsuModRelax.cs

@@ -70,7 +70,7 @@ namespace osu.Game.Rulesets.Osu.Mods
                     break;
 
                 // already hit or beyond the hittable end time.
-                if (h.IsHit || (h.HitObject is IHasEndTime hasEnd && time > hasEnd.EndTime))
+                if (h.IsHit || (h.HitObject is IHasDuration hasEnd && time > hasEnd.EndTime))
                     continue;
 
                 switch (h)

osu.Game.Rulesets.Osu/Mods/OsuModWiggle.cs

@@ -61,7 +61,7 @@ namespace osu.Game.Rulesets.Osu.Mods
             }
 
             // Keep wiggling sliders and spinners for their duration
-            if (!(osuObject is IHasEndTime endTime))
+            if (!(osuObject is IHasDuration endTime))
                 return;
 
             amountWiggles = (int)(endTime.Duration / wiggle_duration);

osu.Game.Rulesets.Osu/Objects/Slider.cs

@@ -6,6 +6,7 @@ using osu.Game.Rulesets.Objects.Types;
 using System.Collections.Generic;
 using osu.Game.Rulesets.Objects;
 using System.Linq;
+using System.Threading;
 using osu.Framework.Caching;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
@@ -16,16 +17,16 @@ using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
-    public class Slider : OsuHitObject, IHasCurve
+    public class Slider : OsuHitObject, IHasPathWithRepeats
     {
-        public double EndTime
+        public double EndTime => StartTime + this.SpanCount() * Path.Distance / Velocity;
+
+        public double Duration
         {
-            get => StartTime + this.SpanCount() * Path.Distance / Velocity;
+            get => EndTime - StartTime;
             set => throw new System.NotSupportedException($"Adjust via {nameof(RepeatCount)} instead"); // can be implemented if/when needed.
         }
 
-        public double Duration => EndTime - StartTime;
-
         private readonly Cached<Vector2> endPositionCache = new Cached<Vector2>();
 
         public override Vector2 EndPosition => endPositionCache.IsValid ? endPositionCache.Value : endPositionCache.Value = Position + this.CurvePositionAt(1);
@@ -133,12 +134,12 @@ namespace osu.Game.Rulesets.Osu.Objects
             TickDistance = scoringDistance / difficulty.SliderTickRate * TickDistanceMultiplier;
         }
 
-        protected override void CreateNestedHitObjects()
+        protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
         {
-            base.CreateNestedHitObjects();
+            base.CreateNestedHitObjects(cancellationToken);
 
             foreach (var e in
-                SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset))
+                SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken))
             {
                 switch (e.Type)
                 {

osu.Game.Rulesets.Osu/Objects/Spinner.cs

@@ -11,7 +11,7 @@ using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Osu.Objects
 {
-    public class Spinner : OsuHitObject, IHasEndTime
+    public class Spinner : OsuHitObject, IHasDuration
     {
         public double EndTime
         {

osu.Game.Rulesets.Osu/Scoring/OsuScoreProcessor.cs

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Osu.Scoring
 {
-    internal class OsuScoreProcessor : ScoreProcessor
+    public class OsuScoreProcessor : ScoreProcessor
     {
         protected override JudgementResult CreateResult(HitObject hitObject, Judgement judgement) => new OsuJudgementResult(hitObject, judgement);
 

osu.Game.Rulesets.Osu/UI/Cursor/CursorTrail.cs

@@ -237,6 +237,7 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
                     {
                         Position = new Vector2(part.Position.X - size.X / 2, part.Position.Y + size.Y / 2),
                         TexturePosition = textureRect.BottomLeft,
+                        TextureRect = new Vector4(0, 0, 1, 1),
                         Colour = DrawColourInfo.Colour.BottomLeft.Linear,
                         Time = part.Time
                     });
@@ -245,6 +246,7 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
                     {
                         Position = new Vector2(part.Position.X + size.X / 2, part.Position.Y + size.Y / 2),
                         TexturePosition = textureRect.BottomRight,
+                        TextureRect = new Vector4(0, 0, 1, 1),
                         Colour = DrawColourInfo.Colour.BottomRight.Linear,
                         Time = part.Time
                     });
@@ -253,6 +255,7 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
                     {
                         Position = new Vector2(part.Position.X + size.X / 2, part.Position.Y - size.Y / 2),
                         TexturePosition = textureRect.TopRight,
+                        TextureRect = new Vector4(0, 0, 1, 1),
                         Colour = DrawColourInfo.Colour.TopRight.Linear,
                         Time = part.Time
                     });
@@ -261,6 +264,7 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
                     {
                         Position = new Vector2(part.Position.X - size.X / 2, part.Position.Y - size.Y / 2),
                         TexturePosition = textureRect.TopLeft,
+                        TextureRect = new Vector4(0, 0, 1, 1),
                         Colour = DrawColourInfo.Colour.TopLeft.Linear,
                         Time = part.Time
                     });
@@ -290,6 +294,9 @@ namespace osu.Game.Rulesets.Osu.UI.Cursor
             [VertexMember(2, VertexAttribPointerType.Float)]
             public Vector2 TexturePosition;
 
+            [VertexMember(4, VertexAttribPointerType.Float)]
+            public Vector4 TextureRect;
+
             [VertexMember(1, VertexAttribPointerType.Float)]
             public float Time;
 

osu.Game.Rulesets.Taiko.Tests/Skinning/TaikoSkinnableTestScene.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.Taiko.Skinning;
 using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
     public abstract class TaikoSkinnableTestScene : SkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => new[]
-        {
-            typeof(TaikoRuleset),
-            typeof(TaikoLegacySkinTransformer),
-        };
-
         protected override Ruleset CreateRulesetForSkinProvider() => new TaikoRuleset();
     }
 }

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableBarLine.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.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -12,7 +9,6 @@ using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Rulesets.Taiko.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
@@ -22,13 +18,6 @@ namespace osu.Game.Rulesets.Taiko.Tests.Skinning
     [TestFixture]
     public class TestSceneDrawableBarLine : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(DrawableBarLine),
-            typeof(LegacyBarLine),
-            typeof(BarLine),
-        }).ToList();
-
         [Cached(typeof(IScrollingInfo))]
         private ScrollingTestContainer.TestScrollingInfo info = new ScrollingTestContainer.TestScrollingInfo
         {

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableDrumRoll.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.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,7 +8,6 @@ using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 
@@ -20,13 +16,6 @@ namespace osu.Game.Rulesets.Taiko.Tests.Skinning
     [TestFixture]
     public class TestSceneDrawableDrumRoll : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(DrawableDrumRoll),
-            typeof(DrawableDrumRollTick),
-            typeof(LegacyDrumRoll),
-        }).ToList();
-
         [Cached(typeof(IScrollingInfo))]
         private ScrollingTestContainer.TestScrollingInfo info = new ScrollingTestContainer.TestScrollingInfo
         {

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableHit.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.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,20 +8,12 @@ using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osu.Game.Rulesets.Taiko.Skinning;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
     [TestFixture]
     public class TestSceneDrawableHit : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(DrawableHit),
-            typeof(LegacyHit),
-            typeof(LegacyCirclePiece),
-        }).ToList();
-
         [BackgroundDependencyLoader]
         private void load()
         {

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneDrawableTaikoMascot.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 Humanizer;
@@ -27,12 +26,6 @@ namespace osu.Game.Rulesets.Taiko.Tests.Skinning
     [TestFixture]
     public class TestSceneDrawableTaikoMascot : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(DrawableTaikoMascot),
-            typeof(TaikoMascotAnimation)
-        }).ToList();
-
         [Cached(typeof(IScrollingInfo))]
         private ScrollingTestContainer.TestScrollingInfo info = new ScrollingTestContainer.TestScrollingInfo
         {

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneHitExplosion.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.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -11,7 +8,6 @@ using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Objects;
 using osu.Game.Rulesets.Taiko.Objects.Drawables;
-using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Rulesets.Taiko.UI;
 
 namespace osu.Game.Rulesets.Taiko.Tests.Skinning
@@ -19,13 +15,6 @@ namespace osu.Game.Rulesets.Taiko.Tests.Skinning
     [TestFixture]
     public class TestSceneHitExplosion : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(HitExplosion),
-            typeof(LegacyHitExplosion),
-            typeof(DefaultHitExplosion),
-        }).ToList();
-
         [BackgroundDependencyLoader]
         private void load()
         {

osu.Game.Rulesets.Taiko.Tests/Skinning/TestSceneInputDrum.cs

@@ -1,15 +1,11 @@
 // 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.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps.ControlPoints;
-using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Rulesets.Taiko.UI;
 using osuTK;
 
@@ -18,12 +14,6 @@ namespace osu.Game.Rulesets.Taiko.Tests.Skinning
     [TestFixture]
     public class TestSceneInputDrum : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(InputDrum),
-            typeof(LegacyInputDrum),
-        }).ToList();
-
         [BackgroundDependencyLoader]
         private void load()
         {

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

@@ -2,15 +2,12 @@
 // 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.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Taiko.Beatmaps;
-using osu.Game.Rulesets.Taiko.Skinning;
 using osu.Game.Rulesets.Taiko.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
@@ -19,14 +16,6 @@ namespace osu.Game.Rulesets.Taiko.Tests.Skinning
 {
     public class TestSceneTaikoPlayfield : TaikoSkinnableTestScene
     {
-        public override IReadOnlyList<Type> RequiredTypes => base.RequiredTypes.Concat(new[]
-        {
-            typeof(TaikoHitTarget),
-            typeof(TaikoLegacyHitTarget),
-            typeof(PlayfieldBackgroundRight),
-            typeof(LegacyTaikoScroller),
-        }).ToList();
-
         [Cached(typeof(IScrollingInfo))]
         private ScrollingTestContainer.TestScrollingInfo info = new ScrollingTestContainer.TestScrollingInfo
         {

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

@@ -19,6 +19,7 @@ namespace osu.Game.Rulesets.Taiko.Tests
         [NonParallelizable]
         [TestCase("basic")]
         [TestCase("slider-generating-drumroll")]
+        [TestCase("sample-to-type-conversions")]
         public void Test(string name) => base.Test(name);
 
         protected override IEnumerable<ConvertValue> CreateConvertValue(HitObject hitObject)
@@ -41,7 +42,7 @@ namespace osu.Game.Rulesets.Taiko.Tests
     public struct ConvertValue : IEquatable<ConvertValue>
     {
         /// <summary>
-        /// A sane value to account for osu!stable using ints everwhere.
+        /// A sane value to account for osu!stable using ints everywhere.
         /// </summary>
         private const float conversion_lenience = 2;
 

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

@@ -0,0 +1,17 @@
+// 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.Tests.Visual;
+
+namespace osu.Game.Rulesets.Taiko.Tests
+{
+    [TestFixture]
+    public class TestSceneEditor : EditorTestScene
+    {
+        public TestSceneEditor()
+            : base(new TaikoRuleset())
+        {
+        }
+    }
+}

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

@@ -0,0 +1,49 @@
+// 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 osu.Framework.Testing;
+using osu.Game.Audio;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Taiko.Objects.Drawables;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Taiko.Tests
+{
+    /// <summary>
+    /// Taiko has some interesting rules for legacy mappings.
+    /// </summary>
+    [HeadlessTest]
+    public class TestSceneSampleOutput : PlayerTestScene
+    {
+        public TestSceneSampleOutput()
+            : base(new TaikoRuleset())
+        {
+        }
+
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+            AddAssert("has correct samples", () =>
+            {
+                var names = Player.DrawableRuleset.Playfield.AllHitObjects.OfType<DrawableHit>().Select(h => string.Join(',', h.GetSamples().Select(s => s.Name)));
+
+                var expected = new[]
+                {
+                    string.Empty,
+                    string.Empty,
+                    string.Empty,
+                    string.Empty,
+                    HitSampleInfo.HIT_FINISH,
+                    HitSampleInfo.HIT_WHISTLE,
+                    HitSampleInfo.HIT_WHISTLE,
+                    HitSampleInfo.HIT_WHISTLE,
+                };
+
+                return names.SequenceEqual(expected);
+            });
+        }
+
+        protected override IBeatmap CreateBeatmap(RulesetInfo ruleset) => new TaikoBeatmapConversionTest().GetBeatmap("sample-to-type-conversions");
+    }
+}

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

@@ -0,0 +1,55 @@
+// 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.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Taiko.Beatmaps;
+using osu.Game.Rulesets.Taiko.Edit;
+using osu.Game.Rulesets.Taiko.Objects;
+using osu.Game.Screens.Edit;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Taiko.Tests
+{
+    public class TestSceneTaikoHitObjectComposer : EditorClockTestScene
+    {
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            BeatDivisor.Value = 8;
+            Clock.Seek(0);
+
+            Child = new TestComposer { RelativeSizeAxes = Axes.Both };
+        });
+
+        [Test]
+        public void BasicTest()
+        {
+        }
+
+        private class TestComposer : CompositeDrawable
+        {
+            [Cached(typeof(EditorBeatmap))]
+            [Cached(typeof(IBeatSnapProvider))]
+            public readonly EditorBeatmap EditorBeatmap;
+
+            public TestComposer()
+            {
+                InternalChildren = new Drawable[]
+                {
+                    EditorBeatmap = new EditorBeatmap(new TaikoBeatmap())
+                    {
+                        BeatmapInfo = { Ruleset = new TaikoRuleset().RulesetInfo }
+                    },
+                    new TaikoHitObjectComposer(new TaikoRuleset())
+                };
+
+                for (int i = 0; i < 10; i++)
+                    EditorBeatmap.Add(new Hit { StartTime = 125 * i });
+            }
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Beatmaps/TaikoBeatmapConverter.cs

@@ -114,7 +114,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
 
                     if (!isForCurrentRuleset && tickSpacing > 0 && osuDuration < 2 * speedAdjustedBeatLength)
                     {
-                        List<IList<HitSampleInfo>> allSamples = obj is IHasCurve curveData ? curveData.NodeSamples : new List<IList<HitSampleInfo>>(new[] { samples });
+                        List<IList<HitSampleInfo>> allSamples = obj is IHasPathWithRepeats curveData ? curveData.NodeSamples : new List<IList<HitSampleInfo>>(new[] { samples });
 
                         int i = 0;
 
@@ -150,7 +150,7 @@ namespace osu.Game.Rulesets.Taiko.Beatmaps
                     break;
                 }
 
-                case IHasEndTime endTimeData:
+                case IHasDuration endTimeData:
                 {
                     double hitMultiplier = BeatmapDifficulty.DifficultyRange(beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty, 3, 5, 7.5) * swell_hit_multiplier;
 

osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.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;
@@ -31,10 +32,10 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
         public override double Calculate(Dictionary<string, double> categoryDifficulty = null)
         {
             mods = Score.Mods;
-            countGreat = Score.Statistics[HitResult.Great];
-            countGood = Score.Statistics[HitResult.Good];
-            countMeh = Score.Statistics[HitResult.Meh];
-            countMiss = Score.Statistics[HitResult.Miss];
+            countGreat = Score.Statistics.GetOrDefault(HitResult.Great);
+            countGood = Score.Statistics.GetOrDefault(HitResult.Good);
+            countMeh = Score.Statistics.GetOrDefault(HitResult.Meh);
+            countMiss = Score.Statistics.GetOrDefault(HitResult.Miss);
 
             // Don't count scores made with supposedly unranked mods
             if (mods.Any(m => !m.Ranked))

osu.Game.Rulesets.Taiko/Edit/Blueprints/DrumRollPlacementBlueprint.cs

@@ -0,0 +1,15 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Rulesets.Taiko.Objects;
+
+namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
+{
+    public class DrumRollPlacementBlueprint : TaikoSpanPlacementBlueprint
+    {
+        public DrumRollPlacementBlueprint()
+            : base(new DrumRoll())
+        {
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPiece.cs

@@ -0,0 +1,35 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
+{
+    public class HitPiece : CompositeDrawable
+    {
+        public HitPiece()
+        {
+            Origin = Anchor.Centre;
+
+            InternalChild = new CircularContainer
+            {
+                Masking = true,
+                BorderThickness = 10,
+                BorderColour = Color4.Yellow,
+                RelativeSizeAxes = Axes.Both,
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        AlwaysPresent = true,
+                        Alpha = 0,
+                        RelativeSizeAxes = Axes.Both
+                    }
+                }
+            };
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Edit/Blueprints/HitPlacementBlueprint.cs

@@ -0,0 +1,52 @@
+// 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.Input.Events;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Taiko.Objects;
+using osu.Game.Rulesets.Taiko.UI;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
+{
+    public class HitPlacementBlueprint : PlacementBlueprint
+    {
+        private readonly HitPiece piece;
+
+        private static Hit hit;
+
+        public HitPlacementBlueprint()
+            : base(hit = new Hit())
+        {
+            InternalChild = piece = new HitPiece
+            {
+                Size = new Vector2(TaikoHitObject.DEFAULT_SIZE * TaikoPlayfield.DEFAULT_HEIGHT)
+            };
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            switch (e.Button)
+            {
+                case MouseButton.Left:
+                    hit.Type = HitType.Centre;
+                    EndPlacement(true);
+                    return true;
+
+                case MouseButton.Right:
+                    hit.Type = HitType.Rim;
+                    EndPlacement(true);
+                    return true;
+            }
+
+            return false;
+        }
+
+        public override void UpdatePosition(SnapResult result)
+        {
+            piece.Position = ToLocalSpace(result.ScreenSpacePosition);
+            base.UpdatePosition(result);
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Edit/Blueprints/LengthPiece.cs

@@ -0,0 +1,40 @@
+// 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.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
+{
+    public class LengthPiece : CompositeDrawable
+    {
+        public LengthPiece()
+        {
+            Origin = Anchor.CentreLeft;
+
+            InternalChild = new Container
+            {
+                Masking = true,
+                Colour = Color4.Yellow,
+                RelativeSizeAxes = Axes.Both,
+                Children = new Drawable[]
+                {
+                    new Box
+                    {
+                        RelativeSizeAxes = Axes.X,
+                        Height = 8,
+                    },
+                    new Box
+                    {
+                        Origin = Anchor.BottomLeft,
+                        Anchor = Anchor.BottomLeft,
+                        RelativeSizeAxes = Axes.X,
+                        Height = 8,
+                    }
+                }
+            };
+        }
+    }
+}

osu.Game.Rulesets.Taiko/Edit/Blueprints/SwellPlacementBlueprint.cs

@@ -0,0 +1,15 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Rulesets.Taiko.Objects;
+
+namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
+{
+    public class SwellPlacementBlueprint : TaikoSpanPlacementBlueprint
+    {
+        public SwellPlacementBlueprint()
+            : base(new Swell())
+        {
+        }
+    }
+}