Merge branch 'master' into present-recommended

global.json

@@ -5,6 +5,6 @@
     "version": "3.1.100"
   },
   "msbuild-sdks": {
-    "Microsoft.Build.Traversal": "2.2.3"
+    "Microsoft.Build.Traversal": "3.0.2"
   }
 }

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.1030.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.1202.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.1120.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.1201.0" />
   </ItemGroup>
 </Project>

osu.Desktop/OsuGameDesktop.cs

@@ -59,7 +59,7 @@ namespace osu.Desktop
             try
             {
                 using (RegistryKey key = Registry.ClassesRoot.OpenSubKey("osu"))
-                    stableInstallPath = key?.OpenSubKey(@"shell\open\command")?.GetValue(string.Empty).ToString()?.Split('"')[1].Replace("osu!.exe", "");
+                    stableInstallPath = key?.OpenSubKey(@"shell\open\command")?.GetValue(string.Empty)?.ToString()?.Split('"')[1].Replace("osu!.exe", "");
 
                 if (checkExists(stableInstallPath))
                     return stableInstallPath;
@@ -138,7 +138,7 @@ namespace osu.Desktop
                     break;
 
                 // SDL2 DesktopWindow
-                case DesktopWindow desktopWindow:
+                case SDL2DesktopWindow desktopWindow:
                     desktopWindow.CursorState |= CursorState.Hidden;
                     desktopWindow.SetIconFromStream(iconStream);
                     desktopWindow.Title = Name;

osu.Desktop/Program.cs

@@ -22,9 +22,9 @@ namespace osu.Desktop
         {
             // Back up the cwd before DesktopGameHost changes it
             var cwd = Environment.CurrentDirectory;
-            bool useSdl = args.Contains("--sdl");
+            bool useOsuTK = args.Contains("--tk");
 
-            using (DesktopGameHost host = Host.GetSuitableHost(@"osu", true, useSdl: useSdl))
+            using (DesktopGameHost host = Host.GetSuitableHost(@"osu", true, useOsuTK: useOsuTK))
             {
                 host.ExceptionThrown += handleException;
 

osu.Desktop/osu.Desktop.csproj

@@ -24,12 +24,12 @@
     <ProjectReference Include="..\osu.Game.Rulesets.Taiko\osu.Game.Rulesets.Taiko.csproj" />
   </ItemGroup>
   <ItemGroup Label="Package References">
-    <PackageReference Include="System.IO.Packaging" Version="4.7.0" />
+    <PackageReference Include="System.IO.Packaging" Version="5.0.0" />
     <PackageReference Include="ppy.squirrel.windows" Version="1.9.0.4" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.2.6" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.2.6" />
-    <PackageReference Include="Microsoft.Win32.Registry" Version="4.7.0" />
+    <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
-    <PackageReference Include="DiscordRichPresence" Version="1.0.150" />
+    <PackageReference Include="DiscordRichPresence" Version="1.0.166" />
     <!-- .NET 3.1 SDK seems to cause issues with a runtime specification. This will likely be resolved in .NET 5. -->
     <PackageReference Include="System.IO.FileSystem.Primitives" Version="4.3.0" />
     <PackageReference Include="System.Runtime.Handles" Version="4.3.0" />

osu.Game.Rulesets.Catch.Tests/Mods/TestSceneCatchModRelax.cs

@@ -38,17 +38,17 @@ namespace osu.Game.Rulesets.Catch.Tests.Mods
                     new Fruit
                     {
                         X = 0,
-                        StartTime = 250
+                        StartTime = 1000
                     },
                     new Fruit
                     {
                         X = CatchPlayfield.WIDTH,
-                        StartTime = 500
+                        StartTime = 2000
                     },
                     new JuiceStream
                     {
                         X = CatchPlayfield.CENTER_X,
-                        StartTime = 750,
+                        StartTime = 3000,
                         Path = new SliderPath(PathType.Linear, new[] { Vector2.Zero, Vector2.UnitY * 200 })
                     }
                 }

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

@@ -43,7 +43,7 @@ namespace osu.Game.Rulesets.Catch.Tests
                     NewCombo = i % 8 == 0,
                     Samples = new List<HitSampleInfo>(new[]
                     {
-                        new HitSampleInfo { Bank = "normal", Name = "hitnormal", Volume = 100 }
+                        new HitSampleInfo(HitSampleInfo.HIT_NORMAL, "normal", volume: 100)
                     })
                 });
             }

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

@@ -0,0 +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 NUnit.Framework;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    [TestFixture]
+    public class TestSceneCatchPlayerLegacySkin : LegacySkinPlayerTestScene
+    {
+        protected override Ruleset CreatePlayerRuleset() => new CatchRuleset();
+    }
+}

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

@@ -10,14 +10,12 @@ using osu.Framework.Testing;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Configuration;
-using osu.Game.Rulesets.Catch.Beatmaps;
 using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Scoring;
-using osu.Game.Rulesets.UI;
 
 namespace osu.Game.Rulesets.Catch.Tests
 {
@@ -103,7 +101,6 @@ namespace osu.Game.Rulesets.Catch.Tests
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.TopCentre,
-                    CreateDrawableRepresentation = ((DrawableRuleset<CatchHitObject>)catchRuleset.CreateInstance().CreateDrawableRulesetWith(new CatchBeatmap())).CreateDrawableRepresentation
                 },
             });
         }

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

@@ -136,7 +136,7 @@ namespace osu.Game.Rulesets.Catch.Tests
             if (juice.NestedHitObjects.Last() is CatchHitObject tail)
                 tail.LastInCombo = true; // usually the (Catch)BeatmapProcessor would do this for us when necessary
 
-            addToPlayfield(new DrawableJuiceStream(juice, drawableRuleset.CreateDrawableRepresentation));
+            addToPlayfield(new DrawableJuiceStream(juice));
         }
 
         private void spawnBananas(bool hit = false)

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

@@ -1,9 +1,10 @@
 // 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 NUnit.Framework;
 using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osuTK;
@@ -17,34 +18,49 @@ namespace osu.Game.Rulesets.Catch.Tests
         {
             base.LoadComplete();
 
-            foreach (FruitVisualRepresentation rep in Enum.GetValues(typeof(FruitVisualRepresentation)))
+            AddStep("show pear", () => SetContents(() => createDrawableFruit(0)));
-                AddStep($"show {rep}", () => SetContents(() => createDrawableFruit(rep)));
+            AddStep("show grape", () => SetContents(() => createDrawableFruit(1)));
+            AddStep("show pineapple / apple", () => SetContents(() => createDrawableFruit(2)));
+            AddStep("show raspberry / orange", () => SetContents(() => createDrawableFruit(3)));
+
+            AddStep("show banana", () => SetContents(createDrawableBanana));
 
             AddStep("show droplet", () => SetContents(() => createDrawableDroplet()));
             AddStep("show tiny droplet", () => SetContents(createDrawableTinyDroplet));
 
-            foreach (FruitVisualRepresentation rep in Enum.GetValues(typeof(FruitVisualRepresentation)))
+            AddStep("show hyperdash pear", () => SetContents(() => createDrawableFruit(0, true)));
-                AddStep($"show hyperdash {rep}", () => SetContents(() => createDrawableFruit(rep, true)));
+            AddStep("show hyperdash grape", () => SetContents(() => createDrawableFruit(1, true)));
+            AddStep("show hyperdash pineapple / apple", () => SetContents(() => createDrawableFruit(2, true)));
+            AddStep("show hyperdash raspberry / orange", () => SetContents(() => createDrawableFruit(3, true)));
 
             AddStep("show hyperdash droplet", () => SetContents(() => createDrawableDroplet(true)));
         }
 
-        private Drawable createDrawableFruit(FruitVisualRepresentation rep, bool hyperdash = false) =>
+        private Drawable createDrawableFruit(int indexInBeatmap, bool hyperdash = false) =>
-            setProperties(new DrawableFruit(new TestCatchFruit(rep)), hyperdash);
+            SetProperties(new DrawableFruit(new Fruit
+            {
+                IndexInBeatmap = indexInBeatmap,
+                HyperDashBindable = { Value = hyperdash }
+            }));
 
-        private Drawable createDrawableDroplet(bool hyperdash = false) => setProperties(new DrawableDroplet(new Droplet()), hyperdash);
+        private Drawable createDrawableBanana() =>
+            SetProperties(new DrawableBanana(new Banana()));
 
-        private Drawable createDrawableTinyDroplet() => setProperties(new DrawableTinyDroplet(new TinyDroplet()));
+        private Drawable createDrawableDroplet(bool hyperdash = false) =>
+            SetProperties(new DrawableDroplet(new Droplet
+            {
+                HyperDashBindable = { Value = hyperdash }
+            }));
 
-        private DrawableCatchHitObject setProperties(DrawableCatchHitObject d, bool hyperdash = false)
+        private Drawable createDrawableTinyDroplet() => SetProperties(new DrawableTinyDroplet(new TinyDroplet()));
+
+        protected virtual DrawableCatchHitObject SetProperties(DrawableCatchHitObject d)
         {
             var hitObject = d.HitObject;
+            hitObject.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty { CircleSize = 0 });
             hitObject.StartTime = 1000000000000;
             hitObject.Scale = 1.5f;
 
-            if (hyperdash)
-                hitObject.HyperDashTarget = new Banana();
-
             d.Anchor = Anchor.Centre;
             d.RelativePositionAxes = Axes.None;
             d.Position = Vector2.Zero;
@@ -55,15 +71,5 @@ namespace osu.Game.Rulesets.Catch.Tests
             };
             return d;
         }
-
-        public class TestCatchFruit : Fruit
-        {
-            public TestCatchFruit(FruitVisualRepresentation rep)
-            {
-                VisualRepresentation = rep;
-            }
-
-            public override FruitVisualRepresentation VisualRepresentation { get; }
-        }
     }
 }

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

@@ -0,0 +1,32 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Bindables;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public class TestSceneFruitVisualChange : TestSceneFruitObjects
+    {
+        private readonly Bindable<int> indexInBeatmap = new Bindable<int>();
+        private readonly Bindable<bool> hyperDash = new Bindable<bool>();
+
+        protected override void LoadComplete()
+        {
+            AddStep("fruit changes visual and hyper", () => SetContents(() => SetProperties(new DrawableFruit(new Fruit
+            {
+                IndexInBeatmapBindable = { BindTarget = indexInBeatmap },
+                HyperDashBindable = { BindTarget = hyperDash },
+            }))));
+
+            AddStep("droplet changes hyper", () => SetContents(() => SetProperties(new DrawableDroplet(new Droplet
+            {
+                HyperDashBindable = { BindTarget = hyperDash },
+            }))));
+
+            Scheduler.AddDelayed(() => indexInBeatmap.Value++, 250, true);
+            Scheduler.AddDelayed(() => hyperDash.Value = !hyperDash.Value, 1000, true);
+        }
+    }
+}

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapProcessor.cs

@@ -5,11 +5,11 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.MathUtils;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
-using osu.Game.Rulesets.Objects.Types;
-using osu.Game.Rulesets.Catch.MathUtils;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Rulesets.Catch.Beatmaps
 {
@@ -192,24 +192,24 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
         private static void initialiseHyperDash(IBeatmap beatmap)
         {
-            List<CatchHitObject> objectWithDroplets = new List<CatchHitObject>();
+            List<PalpableCatchHitObject> palpableObjects = new List<PalpableCatchHitObject>();
 
             foreach (var currentObject in beatmap.HitObjects)
             {
                 if (currentObject is Fruit fruitObject)
-                    objectWithDroplets.Add(fruitObject);
+                    palpableObjects.Add(fruitObject);
 
                 if (currentObject is JuiceStream)
                 {
-                    foreach (var currentJuiceElement in currentObject.NestedHitObjects)
+                    foreach (var juice in currentObject.NestedHitObjects)
                     {
-                        if (!(currentJuiceElement is TinyDroplet))
+                        if (juice is PalpableCatchHitObject palpableObject && !(juice is TinyDroplet))
-                            objectWithDroplets.Add((CatchHitObject)currentJuiceElement);
+                            palpableObjects.Add(palpableObject);
                     }
                 }
             }
 
-            objectWithDroplets.Sort((h1, h2) => h1.StartTime.CompareTo(h2.StartTime));
+            palpableObjects.Sort((h1, h2) => h1.StartTime.CompareTo(h2.StartTime));
 
             double halfCatcherWidth = Catcher.CalculateCatchWidth(beatmap.BeatmapInfo.BaseDifficulty) / 2;
 
@@ -221,10 +221,10 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
             int lastDirection = 0;
             double lastExcess = halfCatcherWidth;
 
-            for (int i = 0; i < objectWithDroplets.Count - 1; i++)
+            for (int i = 0; i < palpableObjects.Count - 1; i++)
             {
-                CatchHitObject currentObject = objectWithDroplets[i];
+                var currentObject = palpableObjects[i];
-                CatchHitObject nextObject = objectWithDroplets[i + 1];
+                var nextObject = palpableObjects[i + 1];
 
                 // Reset variables in-case values have changed (e.g. after applying HR)
                 currentObject.HyperDashTarget = null;

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

@@ -12,9 +12,9 @@ namespace osu.Game.Rulesets.Catch.Difficulty.Preprocessing
     {
         private const float normalized_hitobject_radius = 41.0f;
 
-        public new CatchHitObject BaseObject => (CatchHitObject)base.BaseObject;
+        public new PalpableCatchHitObject BaseObject => (PalpableCatchHitObject)base.BaseObject;
 
-        public new CatchHitObject LastObject => (CatchHitObject)base.LastObject;
+        public new PalpableCatchHitObject LastObject => (PalpableCatchHitObject)base.LastObject;
 
         public readonly float NormalizedPosition;
         public readonly float LastNormalizedPosition;

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

@@ -5,7 +5,7 @@ using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Catch.Mods
 {
-    public class CatchModEasy : ModEasy
+    public class CatchModEasy : ModEasyWithExtraLives
     {
         public override string Description => @"Larger fruits, more forgiving HP drain, less accuracy required, and three lives!";
     }

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

@@ -1,22 +1,27 @@
 // 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.
 
+#nullable enable
+
+using System;
 using System.Collections.Generic;
+using osu.Framework.Utils;
 using osu.Game.Audio;
 using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Utils;
+using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects
 {
-    public class Banana : Fruit
+    public class Banana : Fruit, IHasComboInformation
     {
         /// <summary>
         /// Index of banana in current shower.
         /// </summary>
         public int BananaIndex;
 
-        public override FruitVisualRepresentation VisualRepresentation => FruitVisualRepresentation.Banana;
-
         public override Judgement CreateJudgement() => new CatchBananaJudgement();
 
         private static readonly List<HitSampleInfo> samples = new List<HitSampleInfo> { new BananaHitSampleInfo() };
@@ -26,11 +31,50 @@ namespace osu.Game.Rulesets.Catch.Objects
             Samples = samples;
         }
 
-        private class BananaHitSampleInfo : HitSampleInfo
+        private Color4? colour;
-        {
-            private static string[] lookupNames { get; } = { "metronomelow", "catch-banana" };
 
-            public override IEnumerable<string> LookupNames => lookupNames;
+        Color4 IHasComboInformation.GetComboColour(IReadOnlyList<Color4> comboColours)
+        {
+            // override any external colour changes with banananana
+            return colour ??= getBananaColour();
+        }
+
+        private Color4 getBananaColour()
+        {
+            switch (RNG.Next(0, 3))
+            {
+                default:
+                    return new Color4(255, 240, 0, 255);
+
+                case 1:
+                    return new Color4(255, 192, 0, 255);
+
+                case 2:
+                    return new Color4(214, 221, 28, 255);
+            }
+        }
+
+        private class BananaHitSampleInfo : HitSampleInfo, IEquatable<BananaHitSampleInfo>
+        {
+            private static readonly string[] lookup_names = { "Gameplay/metronomelow", "Gameplay/catch-banana" };
+
+            public override IEnumerable<string> LookupNames => lookup_names;
+
+            public BananaHitSampleInfo(int volume = 0)
+                : base(string.Empty, volume: volume)
+            {
+            }
+
+            public sealed override HitSampleInfo With(Optional<string> newName = default, Optional<string?> newBank = default, Optional<string?> newSuffix = default, Optional<int> newVolume = default)
+                => new BananaHitSampleInfo(newVolume.GetOr(Volume));
+
+            public bool Equals(BananaHitSampleInfo? other)
+                => other != null;
+
+            public override bool Equals(object? obj)
+                => obj is BananaHitSampleInfo other && Equals(other);
+
+            public override int GetHashCode() => lookup_names.GetHashCode();
         }
     }
 }

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

@@ -9,8 +9,6 @@ namespace osu.Game.Rulesets.Catch.Objects
 {
     public class BananaShower : CatchHitObject, IHasDuration
     {
-        public override FruitVisualRepresentation VisualRepresentation => FruitVisualRepresentation.Banana;
-
         public override bool LastInCombo => true;
 
         public override Judgement CreateJudgement() => new IgnoreJudgement();

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

@@ -16,32 +16,47 @@ namespace osu.Game.Rulesets.Catch.Objects
     {
         public const float OBJECT_RADIUS = 64;
 
-        private float x;
+        // This value is after XOffset applied.
+        public readonly Bindable<float> XBindable = new Bindable<float>();
+
+        // This value is before XOffset applied.
+        private float originalX;
 
         /// <summary>
         /// The horizontal position of the fruit between 0 and <see cref="CatchPlayfield.WIDTH"/>.
         /// </summary>
         public float X
         {
-            get => x + XOffset;
+            // TODO: I don't like this asymmetry.
-            set => x = value;
+            get => XBindable.Value;
+            // originalX is set by `XBindable.BindValueChanged`
+            set => XBindable.Value = value + xOffset;
         }
 
-        /// <summary>
+        private float xOffset;
-        /// Whether this object can be placed on the catcher's plate.
-        /// </summary>
-        public virtual bool CanBePlated => false;
 
         /// <summary>
         /// A random offset applied to <see cref="X"/>, set by the <see cref="CatchBeatmapProcessor"/>.
         /// </summary>
-        internal float XOffset { get; set; }
+        internal float XOffset
+        {
+            get => xOffset;
+            set
+            {
+                xOffset = value;
+                XBindable.Value = originalX + xOffset;
+            }
+        }
 
         public double TimePreempt = 1000;
 
-        public int IndexInBeatmap { get; set; }
+        public readonly Bindable<int> IndexInBeatmapBindable = new Bindable<int>();
 
-        public virtual FruitVisualRepresentation VisualRepresentation => (FruitVisualRepresentation)(IndexInBeatmap % 4);
+        public int IndexInBeatmap
+        {
+            get => IndexInBeatmapBindable.Value;
+            set => IndexInBeatmapBindable.Value = value;
+        }
 
         public virtual bool NewCombo { get; set; }
 
@@ -63,13 +78,6 @@ namespace osu.Game.Rulesets.Catch.Objects
             set => ComboIndexBindable.Value = value;
         }
 
-        /// <summary>
-        /// Difference between the distance to the next object
-        /// and the distance that would have triggered a hyper dash.
-        /// A value close to 0 indicates a difficult jump (for difficulty calculation).
-        /// </summary>
-        public float DistanceToHyperDash { get; set; }
-
         public Bindable<bool> LastInComboBindable { get; } = new Bindable<bool>();
 
         /// <summary>
@@ -81,17 +89,13 @@ namespace osu.Game.Rulesets.Catch.Objects
             set => LastInComboBindable.Value = value;
         }
 
-        public float Scale { get; set; } = 1;
+        public readonly Bindable<float> ScaleBindable = new Bindable<float>(1);
 
-        /// <summary>
+        public float Scale
-        /// Whether this fruit can initiate a hyperdash.
+        {
-        /// </summary>
+            get => ScaleBindable.Value;
-        public bool HyperDash => HyperDashTarget != null;
+            set => ScaleBindable.Value = value;
-
+        }
-        /// <summary>
-        /// The target fruit if we are to initiate a hyperdash.
-        /// </summary>
-        public CatchHitObject HyperDashTarget;
 
         protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
         {
@@ -103,22 +107,10 @@ namespace osu.Game.Rulesets.Catch.Objects
         }
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
-    }
 
-    /// <summary>
+        protected CatchHitObject()
-    /// Represents a single object that can be caught by the catcher.
+        {
-    /// </summary>
+            XBindable.BindValueChanged(x => originalX = x.NewValue - xOffset);
-    public abstract class PalpableCatchHitObject : CatchHitObject
+        }
-    {
-        public override bool CanBePlated => true;
-    }
-
-    public enum FruitVisualRepresentation
-    {
-        Pear,
-        Grape,
-        Pineapple,
-        Raspberry,
-        Banana // banananananannaanana
     }
 }

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

@@ -1,26 +1,24 @@
 // 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 JetBrains.Annotations;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
     public class DrawableBanana : DrawableFruit
     {
-        public DrawableBanana(Banana h)
+        protected override FruitVisualRepresentation GetVisualRepresentation(int indexInBeatmap) => FruitVisualRepresentation.Banana;
-            : base(h)
+
+        public DrawableBanana()
+            : this(null)
         {
         }
 
-        private Color4? colour;
+        public DrawableBanana([CanBeNull] Banana h)
-
+            : base(h)
-        protected override Color4 GetComboColour(IReadOnlyList<Color4> comboColours)
         {
-            // override any external colour changes with banananana
-            return colour ??= getBananaColour();
         }
 
         protected override void UpdateInitialTransforms()
@@ -46,20 +44,5 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
             if (Samples != null)
                 Samples.Frequency.Value = 0.77f + ((Banana)HitObject).BananaIndex * 0.006f;
         }
-
-        private Color4 getBananaColour()
-        {
-            switch (RNG.Next(0, 3))
-            {
-                default:
-                    return new Color4(255, 240, 0, 255);
-
-                case 1:
-                    return new Color4(255, 192, 0, 255);
-
-                case 2:
-                    return new Color4(214, 221, 28, 255);
-            }
-        }
     }
 }

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

@@ -1,26 +1,27 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
+using JetBrains.Annotations;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
-    public class DrawableBananaShower : DrawableCatchHitObject<BananaShower>
+    public class DrawableBananaShower : DrawableCatchHitObject
     {
-        private readonly Func<CatchHitObject, DrawableHitObject<CatchHitObject>> createDrawableRepresentation;
         private readonly Container bananaContainer;
 
-        public DrawableBananaShower(BananaShower s, Func<CatchHitObject, DrawableHitObject<CatchHitObject>> createDrawableRepresentation = null)
+        public DrawableBananaShower()
+            : this(null)
+        {
+        }
+
+        public DrawableBananaShower([CanBeNull] BananaShower s)
             : base(s)
         {
-            this.createDrawableRepresentation = createDrawableRepresentation;
             RelativeSizeAxes = Axes.X;
             Origin = Anchor.BottomLeft;
-            X = 0;
 
             AddInternal(bananaContainer = new Container { RelativeSizeAxes = Axes.Both });
         }
@@ -34,18 +35,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
         protected override void ClearNestedHitObjects()
         {
             base.ClearNestedHitObjects();
-            bananaContainer.Clear();
+            bananaContainer.Clear(false);
-        }
-
-        protected override DrawableHitObject CreateNestedHitObject(HitObject hitObject)
-        {
-            switch (hitObject)
-            {
-                case Banana banana:
-                    return createDrawableRepresentation?.Invoke(banana)?.With(o => ((DrawableCatchHitObject)o).CheckPosition = p => CheckPosition?.Invoke(p) ?? false);
-            }
-
-            return base.CreateNestedHitObject(hitObject);
         }
     }
 }

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

@@ -2,77 +2,42 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Collections.Generic;
+using JetBrains.Annotations;
-using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
-using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
-    public abstract class PalpableDrawableCatchHitObject<TObject> : DrawableCatchHitObject<TObject>
-        where TObject : PalpableCatchHitObject
-    {
-        protected Container ScaleContainer { get; private set; }
-
-        protected PalpableDrawableCatchHitObject(TObject hitObject)
-            : base(hitObject)
-        {
-            Origin = Anchor.Centre;
-            Size = new Vector2(CatchHitObject.OBJECT_RADIUS * 2);
-            Masking = false;
-        }
-
-        [BackgroundDependencyLoader]
-        private void load()
-        {
-            AddRangeInternal(new Drawable[]
-            {
-                ScaleContainer = new Container
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Origin = Anchor.Centre,
-                    Anchor = Anchor.Centre,
-                }
-            });
-
-            ScaleContainer.Scale = new Vector2(HitObject.Scale);
-        }
-
-        protected override Color4 GetComboColour(IReadOnlyList<Color4> comboColours) =>
-            comboColours[(HitObject.IndexInBeatmap + 1) % comboColours.Count];
-    }
-
-    public abstract class DrawableCatchHitObject<TObject> : DrawableCatchHitObject
-        where TObject : CatchHitObject
-    {
-        public new TObject HitObject;
-
-        protected DrawableCatchHitObject(TObject hitObject)
-            : base(hitObject)
-        {
-            HitObject = hitObject;
-            Anchor = Anchor.BottomLeft;
-        }
-    }
-
     public abstract class DrawableCatchHitObject : DrawableHitObject<CatchHitObject>
     {
-        protected override double InitialLifetimeOffset => HitObject.TimePreempt;
+        public readonly Bindable<float> XBindable = new Bindable<float>();
 
-        public virtual bool StaysOnPlate => HitObject.CanBePlated;
+        protected override double InitialLifetimeOffset => HitObject.TimePreempt;
 
         public float DisplayRadius => DrawSize.X / 2 * Scale.X * HitObject.Scale;
 
         protected override float SamplePlaybackPosition => HitObject.X / CatchPlayfield.WIDTH;
 
-        protected DrawableCatchHitObject(CatchHitObject hitObject)
+        protected DrawableCatchHitObject([CanBeNull] CatchHitObject hitObject)
             : base(hitObject)
         {
-            X = hitObject.X;
+            Anchor = Anchor.BottomLeft;
+        }
+
+        protected override void OnApply()
+        {
+            base.OnApply();
+
+            XBindable.BindTo(HitObject.XBindable);
+        }
+
+        protected override void OnFree()
+        {
+            base.OnFree();
+
+            XBindable.UnbindFrom(HitObject.XBindable);
         }
 
         public Func<CatchHitObject, bool> CheckPosition;

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

@@ -1,18 +1,25 @@
 // 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 JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Utils;
+using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
-    public class DrawableDroplet : PalpableDrawableCatchHitObject<Droplet>
+    public class DrawableDroplet : DrawablePalpableCatchHitObject
     {
         public override bool StaysOnPlate => false;
 
-        public DrawableDroplet(Droplet h)
+        public DrawableDroplet()
+            : this(null)
+        {
+        }
+
+        public DrawableDroplet([CanBeNull] CatchHitObject h)
             : base(h)
         {
         }
@@ -20,7 +27,17 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
         [BackgroundDependencyLoader]
         private void load()
         {
-            ScaleContainer.Child = new SkinnableDrawable(new CatchSkinComponent(CatchSkinComponents.Droplet), _ => new DropletPiece());
+            HyperDash.BindValueChanged(_ => updatePiece(), true);
+        }
+
+        private void updatePiece()
+        {
+            ScaleContainer.Child = new SkinnableDrawable(
+                new CatchSkinComponent(CatchSkinComponents.Droplet),
+                _ => new DropletPiece
+                {
+                    HyperDash = { BindTarget = HyperDash }
+                });
         }
 
         protected override void UpdateInitialTransforms()

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

@@ -2,15 +2,27 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Utils;
+using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
-    public class DrawableFruit : PalpableDrawableCatchHitObject<Fruit>
+    public class DrawableFruit : DrawablePalpableCatchHitObject
     {
-        public DrawableFruit(Fruit h)
+        public readonly Bindable<FruitVisualRepresentation> VisualRepresentation = new Bindable<FruitVisualRepresentation>();
+
+        protected virtual FruitVisualRepresentation GetVisualRepresentation(int indexInBeatmap) => (FruitVisualRepresentation)(indexInBeatmap % 4);
+
+        public DrawableFruit()
+            : this(null)
+        {
+        }
+
+        public DrawableFruit([CanBeNull] Fruit h)
             : base(h)
         {
         }
@@ -18,10 +30,26 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
         [BackgroundDependencyLoader]
         private void load()
         {
-            ScaleContainer.Child = new SkinnableDrawable(
-                new CatchSkinComponent(getComponent(HitObject.VisualRepresentation)), _ => new FruitPiece());
-
             ScaleContainer.Rotation = (float)(RNG.NextDouble() - 0.5f) * 40;
+
+            IndexInBeatmap.BindValueChanged(change =>
+            {
+                VisualRepresentation.Value = GetVisualRepresentation(change.NewValue);
+            }, true);
+
+            VisualRepresentation.BindValueChanged(_ => updatePiece());
+            HyperDash.BindValueChanged(_ => updatePiece(), true);
+        }
+
+        private void updatePiece()
+        {
+            ScaleContainer.Child = new SkinnableDrawable(
+                new CatchSkinComponent(getComponent(VisualRepresentation.Value)),
+                _ => new FruitPiece
+                {
+                    VisualRepresentation = { BindTarget = VisualRepresentation },
+                    HyperDash = { BindTarget = HyperDash },
+                });
         }
 
         private CatchSkinComponents getComponent(FruitVisualRepresentation hitObjectVisualRepresentation)
@@ -48,4 +76,13 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
             }
         }
     }
+
+    public enum FruitVisualRepresentation
+    {
+        Pear,
+        Grape,
+        Pineapple,
+        Raspberry,
+        Banana // banananananannaanana
+    }
 }

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

@@ -1,37 +1,33 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
+using JetBrains.Annotations;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
-    public class DrawableJuiceStream : DrawableCatchHitObject<JuiceStream>
+    public class DrawableJuiceStream : DrawableCatchHitObject
     {
-        private readonly Func<CatchHitObject, DrawableHitObject<CatchHitObject>> createDrawableRepresentation;
         private readonly Container dropletContainer;
 
-        public override Vector2 OriginPosition => base.OriginPosition - new Vector2(0, CatchHitObject.OBJECT_RADIUS);
+        public DrawableJuiceStream()
+            : this(null)
+        {
+        }
 
-        public DrawableJuiceStream(JuiceStream s, Func<CatchHitObject, DrawableHitObject<CatchHitObject>> createDrawableRepresentation = null)
+        public DrawableJuiceStream([CanBeNull] JuiceStream s)
             : base(s)
         {
-            this.createDrawableRepresentation = createDrawableRepresentation;
             RelativeSizeAxes = Axes.X;
             Origin = Anchor.BottomLeft;
-            X = 0;
 
             AddInternal(dropletContainer = new Container { RelativeSizeAxes = Axes.Both, });
         }
 
         protected override void AddNestedHitObject(DrawableHitObject hitObject)
         {
-            hitObject.Origin = Anchor.BottomCentre;
-
             base.AddNestedHitObject(hitObject);
             dropletContainer.Add(hitObject);
         }
@@ -39,19 +35,7 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
         protected override void ClearNestedHitObjects()
         {
             base.ClearNestedHitObjects();
-            dropletContainer.Clear();
+            dropletContainer.Clear(false);
-        }
-
-        protected override DrawableHitObject CreateNestedHitObject(HitObject hitObject)
-        {
-            switch (hitObject)
-            {
-                case CatchHitObject catchObject:
-                    return createDrawableRepresentation?.Invoke(catchObject)?.With(o =>
-                        ((DrawableCatchHitObject)o).CheckPosition = p => CheckPosition?.Invoke(p) ?? false);
-            }
-
-            throw new ArgumentException($"{nameof(hitObject)} must be of type {nameof(CatchHitObject)}.");
         }
     }
 }

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

@@ -0,0 +1,83 @@
+// 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 JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawables
+{
+    public abstract class DrawablePalpableCatchHitObject : DrawableCatchHitObject
+    {
+        public new PalpableCatchHitObject HitObject => (PalpableCatchHitObject)base.HitObject;
+
+        public readonly Bindable<bool> HyperDash = new Bindable<bool>();
+
+        public readonly Bindable<float> ScaleBindable = new Bindable<float>(1);
+
+        public readonly Bindable<int> IndexInBeatmap = new Bindable<int>();
+
+        /// <summary>
+        /// The multiplicative factor applied to <see cref="ScaleContainer"/> scale relative to <see cref="HitObject"/> scale.
+        /// </summary>
+        protected virtual float ScaleFactor => 1;
+
+        /// <summary>
+        /// Whether this hit object should stay on the catcher plate when the object is caught by the catcher.
+        /// </summary>
+        public virtual bool StaysOnPlate => true;
+
+        protected readonly Container ScaleContainer;
+
+        protected DrawablePalpableCatchHitObject([CanBeNull] CatchHitObject h)
+            : base(h)
+        {
+            Origin = Anchor.Centre;
+            Size = new Vector2(CatchHitObject.OBJECT_RADIUS * 2);
+
+            AddInternal(ScaleContainer = new Container
+            {
+                RelativeSizeAxes = Axes.Both,
+                Origin = Anchor.Centre,
+                Anchor = Anchor.Centre,
+            });
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            XBindable.BindValueChanged(x =>
+            {
+                if (!IsOnPlate) X = x.NewValue;
+            }, true);
+
+            ScaleBindable.BindValueChanged(scale =>
+            {
+                ScaleContainer.Scale = new Vector2(scale.NewValue * ScaleFactor);
+            }, true);
+
+            IndexInBeatmap.BindValueChanged(_ => UpdateComboColour());
+        }
+
+        protected override void OnApply()
+        {
+            base.OnApply();
+
+            HyperDash.BindTo(HitObject.HyperDashBindable);
+            ScaleBindable.BindTo(HitObject.ScaleBindable);
+            IndexInBeatmap.BindTo(HitObject.IndexInBeatmapBindable);
+        }
+
+        protected override void OnFree()
+        {
+            HyperDash.UnbindFrom(HitObject.HyperDashBindable);
+            ScaleBindable.UnbindFrom(HitObject.ScaleBindable);
+            IndexInBeatmap.UnbindFrom(HitObject.IndexInBeatmapBindable);
+
+            base.OnFree();
+        }
+    }
+}

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

@@ -1,21 +1,22 @@
 // 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 JetBrains.Annotations;
 
 namespace osu.Game.Rulesets.Catch.Objects.Drawables
 {
     public class DrawableTinyDroplet : DrawableDroplet
     {
-        public DrawableTinyDroplet(TinyDroplet h)
+        protected override float ScaleFactor => base.ScaleFactor / 2;
-            : base(h)
+
+        public DrawableTinyDroplet()
+            : this(null)
         {
         }
 
-        [BackgroundDependencyLoader]
+        public DrawableTinyDroplet([CanBeNull] TinyDroplet h)
-        private void load()
+            : base(h)
         {
-            ScaleContainer.Scale /= 2;
         }
     }
 }

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

@@ -1,69 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
-using osu.Game.Rulesets.Catch.UI;
-using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
-
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
-{
-    public class DropletPiece : CompositeDrawable
-    {
-        public DropletPiece()
-        {
-            Size = new Vector2(CatchHitObject.OBJECT_RADIUS / 2);
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(DrawableHitObject drawableObject)
-        {
-            DrawableCatchHitObject drawableCatchObject = (DrawableCatchHitObject)drawableObject;
-            var hitObject = drawableCatchObject.HitObject;
-
-            InternalChild = new Pulp
-            {
-                RelativeSizeAxes = Axes.Both,
-                AccentColour = { BindTarget = drawableObject.AccentColour }
-            };
-
-            if (hitObject.HyperDash)
-            {
-                AddInternal(new Container
-                {
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    RelativeSizeAxes = Axes.Both,
-                    Size = new Vector2(2f),
-                    Depth = 1,
-                    Children = new Drawable[]
-                    {
-                        new Circle
-                        {
-                            RelativeSizeAxes = Axes.Both,
-                            Anchor = Anchor.Centre,
-                            Origin = Anchor.Centre,
-                            BorderColour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
-                            BorderThickness = 6,
-                            Children = new Drawable[]
-                            {
-                                new Box
-                                {
-                                    AlwaysPresent = true,
-                                    Alpha = 0.3f,
-                                    Blending = BlendingParameters.Additive,
-                                    RelativeSizeAxes = Axes.Both,
-                                    Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
-                                }
-                            }
-                        }
-                    }
-                });
-            }
-        }
-    }
-}

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

@@ -1,111 +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 System;
-using osu.Framework.Allocation;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
-using osu.Framework.Graphics.Shapes;
-using osu.Game.Rulesets.Catch.UI;
-using osu.Game.Rulesets.Objects.Drawables;
-using osuTK.Graphics;
-
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
-{
-    internal class FruitPiece : CompositeDrawable
-    {
-        /// <summary>
-        /// Because we're adding a border around the fruit, we need to scale down some.
-        /// </summary>
-        public const float RADIUS_ADJUST = 1.1f;
-
-        private Circle border;
-        private CatchHitObject hitObject;
-
-        public FruitPiece()
-        {
-            RelativeSizeAxes = Axes.Both;
-        }
-
-        [BackgroundDependencyLoader]
-        private void load(DrawableHitObject drawableObject)
-        {
-            DrawableCatchHitObject drawableCatchObject = (DrawableCatchHitObject)drawableObject;
-            hitObject = drawableCatchObject.HitObject;
-
-            AddRangeInternal(new[]
-            {
-                getFruitFor(drawableCatchObject.HitObject.VisualRepresentation),
-                border = new Circle
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    BorderColour = Color4.White,
-                    BorderThickness = 6f * RADIUS_ADJUST,
-                    Children = new Drawable[]
-                    {
-                        new Box
-                        {
-                            AlwaysPresent = true,
-                            Alpha = 0,
-                            RelativeSizeAxes = Axes.Both
-                        }
-                    }
-                },
-            });
-
-            if (hitObject.HyperDash)
-            {
-                AddInternal(new Circle
-                {
-                    RelativeSizeAxes = Axes.Both,
-                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    BorderColour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
-                    BorderThickness = 12f * RADIUS_ADJUST,
-                    Children = new Drawable[]
-                    {
-                        new Box
-                        {
-                            AlwaysPresent = true,
-                            Alpha = 0.3f,
-                            Blending = BlendingParameters.Additive,
-                            RelativeSizeAxes = Axes.Both,
-                            Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR,
-                        }
-                    }
-                });
-            }
-        }
-
-        protected override void Update()
-        {
-            base.Update();
-            border.Alpha = (float)Math.Clamp((hitObject.StartTime - Time.Current) / 500, 0, 1);
-        }
-
-        private Drawable getFruitFor(FruitVisualRepresentation representation)
-        {
-            switch (representation)
-            {
-                case FruitVisualRepresentation.Pear:
-                    return new PearPiece();
-
-                case FruitVisualRepresentation.Grape:
-                    return new GrapePiece();
-
-                case FruitVisualRepresentation.Pineapple:
-                    return new PineapplePiece();
-
-                case FruitVisualRepresentation.Banana:
-                    return new BananaPiece();
-
-                case FruitVisualRepresentation.Raspberry:
-                    return new RaspberryPiece();
-            }
-
-            return Empty();
-        }
-    }
-}

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/BananaPiece.cs

@@ -2,10 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osuTK;
 
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
 {
     public class BananaPiece : PulpFormation
     {

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/BorderPiece.cs

@@ -0,0 +1,31 @@
+// 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.Shapes;
+using osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
+{
+    public class BorderPiece : Circle
+    {
+        public BorderPiece()
+        {
+            Size = new Vector2(CatchHitObject.OBJECT_RADIUS * 2);
+            Anchor = Anchor.Centre;
+            Origin = Anchor.Centre;
+            BorderColour = Color4.White;
+            BorderThickness = 6f * FruitPiece.RADIUS_ADJUST;
+
+            // Border is drawn only when there is a child drawable.
+            Child = new Box
+            {
+                AlwaysPresent = true,
+                Alpha = 0,
+                RelativeSizeAxes = Axes.Both,
+            };
+        }
+    }
+}
+

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/DropletPiece.cs

@@ -0,0 +1,37 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Objects.Drawables;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
+{
+    public class DropletPiece : CompositeDrawable
+    {
+        public readonly Bindable<bool> HyperDash = new Bindable<bool>();
+
+        public DropletPiece()
+        {
+            Size = new Vector2(CatchHitObject.OBJECT_RADIUS / 2);
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(DrawableHitObject drawableObject)
+        {
+            InternalChild = new Pulp
+            {
+                RelativeSizeAxes = Axes.Both,
+                AccentColour = { BindTarget = drawableObject.AccentColour }
+            };
+
+            if (HyperDash.Value)
+            {
+                AddInternal(new HyperDropletBorderPiece());
+            }
+        }
+    }
+}

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

@@ -0,0 +1,79 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Objects.Drawables;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
+{
+    internal class FruitPiece : CompositeDrawable
+    {
+        /// <summary>
+        /// Because we're adding a border around the fruit, we need to scale down some.
+        /// </summary>
+        public const float RADIUS_ADJUST = 1.1f;
+
+        public readonly Bindable<FruitVisualRepresentation> VisualRepresentation = new Bindable<FruitVisualRepresentation>();
+        public readonly Bindable<bool> HyperDash = new Bindable<bool>();
+
+        [CanBeNull]
+        private DrawableCatchHitObject drawableHitObject;
+
+        [CanBeNull]
+        private BorderPiece borderPiece;
+
+        public FruitPiece()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader(permitNulls: true)]
+        private void load([CanBeNull] DrawableHitObject drawable)
+        {
+            drawableHitObject = (DrawableCatchHitObject)drawable;
+
+            AddInternal(getFruitFor(VisualRepresentation.Value));
+
+            // if it is not part of a DHO, the border is always invisible.
+            if (drawableHitObject != null)
+                AddInternal(borderPiece = new BorderPiece());
+
+            if (HyperDash.Value)
+                AddInternal(new HyperBorderPiece());
+        }
+
+        protected override void Update()
+        {
+            if (borderPiece != null && drawableHitObject?.HitObject != null)
+                borderPiece.Alpha = (float)Math.Clamp((drawableHitObject.HitObject.StartTime - Time.Current) / 500, 0, 1);
+        }
+
+        private Drawable getFruitFor(FruitVisualRepresentation representation)
+        {
+            switch (representation)
+            {
+                case FruitVisualRepresentation.Pear:
+                    return new PearPiece();
+
+                case FruitVisualRepresentation.Grape:
+                    return new GrapePiece();
+
+                case FruitVisualRepresentation.Pineapple:
+                    return new PineapplePiece();
+
+                case FruitVisualRepresentation.Banana:
+                    return new BananaPiece();
+
+                case FruitVisualRepresentation.Raspberry:
+                    return new RaspberryPiece();
+            }
+
+            return Empty();
+        }
+    }
+}

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/GrapePiece.cs

@@ -2,10 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osuTK;
 
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
 {
     public class GrapePiece : PulpFormation
     {

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/HyperBorderPiece.cs

@@ -0,0 +1,22 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Game.Rulesets.Catch.UI;
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
+{
+    public class HyperBorderPiece : BorderPiece
+    {
+        public HyperBorderPiece()
+        {
+            BorderColour = Catcher.DEFAULT_HYPER_DASH_COLOUR;
+            BorderThickness = 12f * FruitPiece.RADIUS_ADJUST;
+
+            Child.Alpha = 0.3f;
+            Child.Blending = BlendingParameters.Additive;
+            Child.Colour = Catcher.DEFAULT_HYPER_DASH_COLOUR;
+        }
+    }
+}
+

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/HyperDropletBorderPiece.cs

@@ -0,0 +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.
+
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
+{
+    public class HyperDropletBorderPiece : HyperBorderPiece
+    {
+        public HyperDropletBorderPiece()
+        {
+            Size /= 2;
+            BorderThickness = 6f;
+        }
+    }
+}

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/PearPiece.cs

@@ -2,10 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osuTK;
 
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
 {
     public class PearPiece : PulpFormation
     {

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/PineapplePiece.cs

@@ -2,10 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osuTK;
 
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
 {
     public class PineapplePiece : PulpFormation
     {

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/PulpFormation.cs

@@ -10,7 +10,7 @@ using osu.Game.Rulesets.Objects.Drawables;
 using osuTK;
 using osuTK.Graphics;
 
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
 {
     public abstract class PulpFormation : CompositeDrawable
     {

osu.Game.Rulesets.Catch/Objects/Drawables/Pieces/RaspberryPiece.cs

@@ -2,10 +2,9 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Framework.Graphics;
-using osu.Game.Rulesets.Catch.Objects.Drawables.Pieces;
 using osuTK;
 
-namespace osu.Game.Rulesets.Catch.Objects.Drawables
+namespace osu.Game.Rulesets.Catch.Objects.Drawables.Pieces
 {
     public class RaspberryPiece : PulpFormation
     {

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

@@ -50,12 +50,7 @@ namespace osu.Game.Rulesets.Catch.Objects
         {
             base.CreateNestedHitObjects(cancellationToken);
 
-            var dropletSamples = Samples.Select(s => new HitSampleInfo
+            var dropletSamples = Samples.Select(s => s.With(@"slidertick")).ToList();
-            {
-                Bank = s.Bank,
-                Name = @"slidertick",
-                Volume = s.Volume
-            }).ToList();
 
             int nodeIndex = 0;
             SliderEventDescriptor? lastEvent = null;

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

@@ -0,0 +1,48 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using osu.Framework.Bindables;
+using osu.Game.Rulesets.Objects.Types;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Objects
+{
+    /// <summary>
+    /// Represents a single object that can be caught by the catcher.
+    /// This includes normal fruits, droplets, and bananas but excludes objects that act only as a container of nested hit objects.
+    /// </summary>
+    public abstract class PalpableCatchHitObject : CatchHitObject, IHasComboInformation
+    {
+        /// <summary>
+        /// Difference between the distance to the next object
+        /// and the distance that would have triggered a hyper dash.
+        /// A value close to 0 indicates a difficult jump (for difficulty calculation).
+        /// </summary>
+        public float DistanceToHyperDash { get; set; }
+
+        public readonly Bindable<bool> HyperDashBindable = new Bindable<bool>();
+
+        /// <summary>
+        /// Whether this fruit can initiate a hyperdash.
+        /// </summary>
+        public bool HyperDash => HyperDashBindable.Value;
+
+        private CatchHitObject hyperDashTarget;
+
+        /// <summary>
+        /// The target fruit if we are to initiate a hyperdash.
+        /// </summary>
+        public CatchHitObject HyperDashTarget
+        {
+            get => hyperDashTarget;
+            set
+            {
+                hyperDashTarget = value;
+                HyperDashBindable.Value = value != null;
+            }
+        }
+
+        Color4 IHasComboInformation.GetComboColour(IReadOnlyList<Color4> comboColours) => comboColours[(IndexInBeatmap + 1) % comboColours.Count];
+    }
+}

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

@@ -40,7 +40,7 @@ namespace osu.Game.Rulesets.Catch.Replays
             float lastPosition = CatchPlayfield.CENTER_X;
             double lastTime = 0;
 
-            void moveToNext(CatchHitObject h)
+            void moveToNext(PalpableCatchHitObject h)
             {
                 float positionChange = Math.Abs(lastPosition - h.X);
                 double timeAvailable = h.StartTime - lastTime;
@@ -101,23 +101,16 @@ namespace osu.Game.Rulesets.Catch.Replays
 
             foreach (var obj in Beatmap.HitObjects)
             {
-                switch (obj)
+                if (obj is PalpableCatchHitObject palpableObject)
                 {
-                    case Fruit _:
+                    moveToNext(palpableObject);
-                        moveToNext(obj);
-                        break;
                 }
 
                 foreach (var nestedObj in obj.NestedHitObjects.Cast<CatchHitObject>())
                 {
-                    switch (nestedObj)
+                    if (nestedObj is PalpableCatchHitObject palpableNestedObject)
                     {
-                        case Banana _:
+                        moveToNext(palpableNestedObject);
-                        case TinyDroplet _:
-                        case Droplet _:
-                        case Fruit _:
-                            moveToNext(nestedObj);
-                            break;
                     }
                 }
             }

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

@@ -19,7 +19,8 @@ namespace osu.Game.Rulesets.Catch.Skinning
     {
         private readonly string lookupName;
 
-        private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly Bindable<Color4> accentColour = new Bindable<Color4>();
+        private readonly Bindable<bool> hyperDash = new Bindable<bool>();
         private Sprite colouredSprite;
 
         public LegacyFruitPiece(string lookupName)
@@ -31,9 +32,10 @@ namespace osu.Game.Rulesets.Catch.Skinning
         [BackgroundDependencyLoader]
         private void load(DrawableHitObject drawableObject, ISkinSource skin)
         {
-            DrawableCatchHitObject drawableCatchObject = (DrawableCatchHitObject)drawableObject;
+            var drawableCatchObject = (DrawablePalpableCatchHitObject)drawableObject;
 
             accentColour.BindTo(drawableCatchObject.AccentColour);
+            hyperDash.BindTo(drawableCatchObject.HyperDash);
 
             InternalChildren = new Drawable[]
             {
@@ -51,9 +53,9 @@ namespace osu.Game.Rulesets.Catch.Skinning
                 },
             };
 
-            if (drawableCatchObject.HitObject.HyperDash)
+            if (hyperDash.Value)
             {
-                var hyperDash = new Sprite
+                var hyperDashOverlay = new Sprite
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
@@ -67,7 +69,7 @@ namespace osu.Game.Rulesets.Catch.Skinning
                              Catcher.DEFAULT_HYPER_DASH_COLOUR,
                 };
 
-                AddInternal(hyperDash);
+                AddInternal(hyperDashOverlay);
             }
         }
 

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

@@ -2,6 +2,7 @@
 // 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.Graphics.Containers;
 using osu.Game.Beatmaps;
@@ -42,7 +43,6 @@ namespace osu.Game.Rulesets.Catch.UI
 
             CatcherArea = new CatcherArea(difficulty)
             {
-                CreateDrawableRepresentation = createDrawableRepresentation,
                 ExplodingFruitTarget = explodingFruitContainer,
                 Anchor = Anchor.BottomLeft,
                 Origin = Anchor.TopLeft,
@@ -57,19 +57,33 @@ namespace osu.Game.Rulesets.Catch.UI
             };
         }
 
-        public bool CheckIfWeCanCatch(CatchHitObject obj) => CatcherArea.AttemptCatch(obj);
+        [BackgroundDependencyLoader]
-
+        private void load()
-        public override void Add(DrawableHitObject h)
         {
-            h.OnNewResult += onNewResult;
+            RegisterPool<Droplet, DrawableDroplet>(50);
-            h.OnRevertResult += onRevertResult;
+            RegisterPool<TinyDroplet, DrawableTinyDroplet>(50);
-
+            RegisterPool<Fruit, DrawableFruit>(100);
-            base.Add(h);
+            RegisterPool<Banana, DrawableBanana>(100);
-
+            RegisterPool<JuiceStream, DrawableJuiceStream>(10);
-            var fruit = (DrawableCatchHitObject)h;
+            RegisterPool<BananaShower, DrawableBananaShower>(2);
-            fruit.CheckPosition = CheckIfWeCanCatch;
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            // these subscriptions need to be done post constructor to ensure externally bound components have a chance to populate required fields (ScoreProcessor / ComboAtJudgement in this case).
+            NewResult += onNewResult;
+            RevertResult += onRevertResult;
+        }
+
+        protected override void OnNewDrawableHitObject(DrawableHitObject d)
+        {
+            ((DrawableCatchHitObject)d).CheckPosition = checkIfWeCanCatch;
+        }
+
+        private bool checkIfWeCanCatch(CatchHitObject obj) => CatcherArea.AttemptCatch(obj);
+
         private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
             => CatcherArea.OnNewResult((DrawableCatchHitObject)judgedObject, result);
 

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

@@ -9,6 +9,7 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Animations;
 using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Pooling;
 using osu.Framework.Input.Bindings;
 using osu.Framework.Utils;
 using osu.Game.Beatmaps;
@@ -107,6 +108,9 @@ namespace osu.Game.Rulesets.Catch.UI
         private float hyperDashTargetPosition;
         private Bindable<bool> hitLighting;
 
+        private DrawablePool<HitExplosion> hitExplosionPool;
+        private Container<HitExplosion> hitExplosionContainer;
+
         public Catcher([NotNull] Container trailsTarget, BeatmapDifficulty difficulty = null)
         {
             this.trailsTarget = trailsTarget;
@@ -127,6 +131,7 @@ namespace osu.Game.Rulesets.Catch.UI
 
             InternalChildren = new Drawable[]
             {
+                hitExplosionPool = new DrawablePool<HitExplosion>(10),
                 caughtFruitContainer,
                 catcherIdle = new CatcherSprite(CatcherAnimationState.Idle)
                 {
@@ -142,7 +147,12 @@ namespace osu.Game.Rulesets.Catch.UI
                 {
                     Anchor = Anchor.TopCentre,
                     Alpha = 0,
-                }
+                },
+                hitExplosionContainer = new Container<HitExplosion>
+                {
+                    Anchor = Anchor.TopCentre,
+                    Origin = Anchor.BottomCentre,
+                },
             };
 
             trails = new CatcherTrailDisplay(this);
@@ -209,22 +219,22 @@ namespace osu.Game.Rulesets.Catch.UI
 
             if (hitLighting.Value)
             {
-                AddInternal(new HitExplosion(fruit)
+                HitExplosion hitExplosion = hitExplosionPool.Get();
-                {
+                hitExplosion.X = fruit.X;
-                    X = fruit.X,
+                hitExplosion.Scale = new Vector2(fruit.HitObject.Scale);
-                    Scale = new Vector2(fruit.HitObject.Scale)
+                hitExplosion.ObjectColour = fruit.AccentColour.Value;
-                });
+                hitExplosionContainer.Add(hitExplosion);
             }
         }
 
         /// <summary>
         /// Let the catcher attempt to catch a fruit.
         /// </summary>
-        /// <param name="fruit">The fruit to catch.</param>
+        /// <param name="hitObject">The fruit to catch.</param>
         /// <returns>Whether the catch is possible.</returns>
-        public bool AttemptCatch(CatchHitObject fruit)
+        public bool AttemptCatch(CatchHitObject hitObject)
         {
-            if (!fruit.CanBePlated)
+            if (!(hitObject is PalpableCatchHitObject fruit))
                 return false;
 
             var halfCatchWidth = catchWidth * 0.5f;

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

@@ -10,7 +10,6 @@ using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Rulesets.Catch.Replays;
 using osu.Game.Rulesets.Judgements;
-using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.UI;
 using osuTK;
@@ -21,8 +20,6 @@ namespace osu.Game.Rulesets.Catch.UI
     {
         public const float CATCHER_SIZE = 106.75f;
 
-        public Func<CatchHitObject, DrawableHitObject<CatchHitObject>> CreateDrawableRepresentation;
-
         public readonly Catcher MovableCatcher;
         private readonly CatchComboDisplay comboDisplay;
 
@@ -51,7 +48,7 @@ namespace osu.Game.Rulesets.Catch.UI
             };
         }
 
-        public void OnNewResult(DrawableCatchHitObject fruit, JudgementResult result)
+        public void OnNewResult(DrawableCatchHitObject hitObject, JudgementResult result)
         {
             if (!result.Type.IsScorable())
                 return;
@@ -69,15 +66,15 @@ namespace osu.Game.Rulesets.Catch.UI
                     lastPlateableFruit.OnLoadComplete += _ => action();
             }
 
-            if (result.IsHit && fruit.HitObject.CanBePlated)
+            if (result.IsHit && hitObject is DrawablePalpableCatchHitObject fruit)
             {
                 // create a new (cloned) fruit to stay on the plate. the original is faded out immediately.
-                var caughtFruit = (DrawableCatchHitObject)CreateDrawableRepresentation?.Invoke(fruit.HitObject);
+                var caughtFruit = createCaughtFruit(fruit);
 
                 if (caughtFruit == null) return;
 
                 caughtFruit.RelativePositionAxes = Axes.None;
-                caughtFruit.Position = new Vector2(MovableCatcher.ToLocalSpace(fruit.ScreenSpaceDrawQuad.Centre).X - MovableCatcher.DrawSize.X / 2, 0);
+                caughtFruit.Position = new Vector2(MovableCatcher.ToLocalSpace(hitObject.ScreenSpaceDrawQuad.Centre).X - MovableCatcher.DrawSize.X / 2, 0);
                 caughtFruit.IsOnPlate = true;
 
                 caughtFruit.Anchor = Anchor.TopCentre;
@@ -93,7 +90,7 @@ namespace osu.Game.Rulesets.Catch.UI
                     runAfterLoaded(() => MovableCatcher.Explode(caughtFruit));
             }
 
-            if (fruit.HitObject.LastInCombo)
+            if (hitObject.HitObject.LastInCombo)
             {
                 if (result.Judgement is CatchJudgement catchJudgement && catchJudgement.ShouldExplodeFor(result))
                     runAfterLoaded(() => MovableCatcher.Explode());
@@ -101,7 +98,7 @@ namespace osu.Game.Rulesets.Catch.UI
                     MovableCatcher.Drop();
             }
 
-            comboDisplay.OnNewResult(fruit, result);
+            comboDisplay.OnNewResult(hitObject, result);
         }
 
         public void OnRevertResult(DrawableCatchHitObject fruit, JudgementResult result)
@@ -127,5 +124,26 @@ namespace osu.Game.Rulesets.Catch.UI
 
             comboDisplay.X = MovableCatcher.X;
         }
+
+        private DrawableCatchHitObject createCaughtFruit(DrawablePalpableCatchHitObject hitObject)
+        {
+            switch (hitObject.HitObject)
+            {
+                case Banana banana:
+                    return new DrawableBanana(banana);
+
+                case Fruit fruit:
+                    return new DrawableFruit(fruit);
+
+                case TinyDroplet tiny:
+                    return new DrawableTinyDroplet(tiny);
+
+                case Droplet droplet:
+                    return new DrawableDroplet(droplet);
+
+                default:
+                    return null;
+            }
+        }
     }
 }

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

@@ -8,7 +8,6 @@ using osu.Game.Configuration;
 using osu.Game.Input.Handlers;
 using osu.Game.Replays;
 using osu.Game.Rulesets.Catch.Objects;
-using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osu.Game.Rulesets.Catch.Replays;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects.Drawables;
@@ -40,30 +39,6 @@ namespace osu.Game.Rulesets.Catch.UI
 
         protected override PassThroughInputManager CreateInputManager() => new CatchInputManager(Ruleset.RulesetInfo);
 
-        public override DrawableHitObject<CatchHitObject> CreateDrawableRepresentation(CatchHitObject h)
+        public override DrawableHitObject<CatchHitObject> CreateDrawableRepresentation(CatchHitObject h) => null;
-        {
-            switch (h)
-            {
-                case Banana banana:
-                    return new DrawableBanana(banana);
-
-                case Fruit fruit:
-                    return new DrawableFruit(fruit);
-
-                case JuiceStream stream:
-                    return new DrawableJuiceStream(stream, CreateDrawableRepresentation);
-
-                case BananaShower shower:
-                    return new DrawableBananaShower(shower, CreateDrawableRepresentation);
-
-                case TinyDroplet tiny:
-                    return new DrawableTinyDroplet(tiny);
-
-                case Droplet droplet:
-                    return new DrawableDroplet(droplet);
-            }
-
-            return null;
-        }
     }
 }

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

@@ -5,35 +5,43 @@ using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
+using osu.Framework.Graphics.Pooling;
 using osu.Framework.Utils;
-using osu.Game.Rulesets.Catch.Objects.Drawables;
 using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
 {
-    public class HitExplosion : CompositeDrawable
+    public class HitExplosion : PoolableDrawable
     {
-        private readonly CircularContainer largeFaint;
+        private Color4 objectColour;
 
-        public HitExplosion(DrawableCatchHitObject fruit)
+        public Color4 ObjectColour
+        {
+            get => objectColour;
+            set
+            {
+                if (objectColour == value) return;
+
+                objectColour = value;
+                onColourChanged();
+            }
+        }
+
+        private readonly CircularContainer largeFaint;
+        private readonly CircularContainer smallFaint;
+        private readonly CircularContainer directionalGlow1;
+        private readonly CircularContainer directionalGlow2;
+
+        public HitExplosion()
         {
             Size = new Vector2(20);
             Anchor = Anchor.TopCentre;
             Origin = Anchor.BottomCentre;
 
-            Color4 objectColour = fruit.AccentColour.Value;
-
             // scale roughly in-line with visual appearance of notes
-
-            const float angle_variangle = 15; // should be less than 45
-
-            const float roundness = 100;
-
             const float initial_height = 10;
 
-            var colour = Interpolation.ValueAt(0.4f, objectColour, Color4.White, 0, 1);
-
             InternalChildren = new Drawable[]
             {
                 largeFaint = new CircularContainer
@@ -42,33 +50,17 @@ namespace osu.Game.Rulesets.Catch.UI
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
                     Masking = true,
-                    // we want our size to be very small so the glow dominates it.
-                    Size = new Vector2(0.8f),
                     Blending = BlendingParameters.Additive,
-                    EdgeEffect = new EdgeEffectParameters
-                    {
-                        Type = EdgeEffectType.Glow,
-                        Colour = Interpolation.ValueAt(0.1f, objectColour, Color4.White, 0, 1).Opacity(0.3f),
-                        Roundness = 160,
-                        Radius = 200,
-                    },
                 },
-                new CircularContainer
+                smallFaint = new CircularContainer
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
                     RelativeSizeAxes = Axes.Both,
                     Masking = true,
                     Blending = BlendingParameters.Additive,
-                    EdgeEffect = new EdgeEffectParameters
-                    {
-                        Type = EdgeEffectType.Glow,
-                        Colour = Interpolation.ValueAt(0.6f, objectColour, Color4.White, 0, 1),
-                        Roundness = 20,
-                        Radius = 50,
-                    },
                 },
-                new CircularContainer
+                directionalGlow1 = new CircularContainer
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
@@ -76,16 +68,8 @@ namespace osu.Game.Rulesets.Catch.UI
                     Masking = true,
                     Size = new Vector2(0.01f, initial_height),
                     Blending = BlendingParameters.Additive,
-                    Rotation = RNG.NextSingle(-angle_variangle, angle_variangle),
-                    EdgeEffect = new EdgeEffectParameters
-                    {
-                        Type = EdgeEffectType.Glow,
-                        Colour = colour,
-                        Roundness = roundness,
-                        Radius = 40,
-                    },
                 },
-                new CircularContainer
+                directionalGlow2 = new CircularContainer
                 {
                     Anchor = Anchor.Centre,
                     Origin = Anchor.Centre,
@@ -93,30 +77,57 @@ namespace osu.Game.Rulesets.Catch.UI
                     Masking = true,
                     Size = new Vector2(0.01f, initial_height),
                     Blending = BlendingParameters.Additive,
-                    Rotation = RNG.NextSingle(-angle_variangle, angle_variangle),
-                    EdgeEffect = new EdgeEffectParameters
-                    {
-                        Type = EdgeEffectType.Glow,
-                        Colour = colour,
-                        Roundness = roundness,
-                        Radius = 40,
-                    },
                 }
             };
         }
 
-        protected override void LoadComplete()
+        protected override void PrepareForUse()
         {
-            base.LoadComplete();
+            base.PrepareForUse();
 
             const double duration = 400;
 
+            // we want our size to be very small so the glow dominates it.
+            largeFaint.Size = new Vector2(0.8f);
             largeFaint
                 .ResizeTo(largeFaint.Size * new Vector2(5, 1), duration, Easing.OutQuint)
                 .FadeOut(duration * 2);
 
+            const float angle_variangle = 15; // should be less than 45
+            directionalGlow1.Rotation = RNG.NextSingle(-angle_variangle, angle_variangle);
+            directionalGlow2.Rotation = RNG.NextSingle(-angle_variangle, angle_variangle);
+
             this.FadeInFromZero(50).Then().FadeOut(duration, Easing.Out);
             Expire(true);
         }
+
+        private void onColourChanged()
+        {
+            const float roundness = 100;
+
+            largeFaint.EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Glow,
+                Colour = Interpolation.ValueAt(0.1f, objectColour, Color4.White, 0, 1).Opacity(0.3f),
+                Roundness = 160,
+                Radius = 200,
+            };
+
+            smallFaint.EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Glow,
+                Colour = Interpolation.ValueAt(0.6f, objectColour, Color4.White, 0, 1),
+                Roundness = 20,
+                Radius = 50,
+            };
+
+            directionalGlow1.EdgeEffect = directionalGlow2.EdgeEffect = new EdgeEffectParameters
+            {
+                Type = EdgeEffectType.Glow,
+                Colour = Interpolation.ValueAt(0.4f, objectColour, Color4.White, 0, 1),
+                Roundness = roundness,
+                Radius = 40,
+            };
+        }
     }
 }

osu.Game.Rulesets.Mania.Tests/Editor/TestSceneManiaBeatSnapGrid.cs

@@ -96,6 +96,11 @@ namespace osu.Game.Rulesets.Mania.Tests.Editor
             throw new System.NotImplementedException();
         }
 
+        public override SnapResult SnapScreenSpacePositionToValidPosition(Vector2 screenSpacePosition)
+        {
+            throw new System.NotImplementedException();
+        }
+
         public override float GetBeatSnapDistanceAt(double referenceTime)
         {
             throw new System.NotImplementedException();

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

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

@@ -78,9 +78,9 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
 
         private double originalStartTime;
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
 
             if (PlacementActive)
             {

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

@@ -48,9 +48,9 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             return true;
         }
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
 
             if (!PlacementActive)
                 Column = result.Playfield as Column;

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

@@ -22,9 +22,9 @@ namespace osu.Game.Rulesets.Mania.Edit.Blueprints
             InternalChild = piece = new EditNotePiece { Origin = Anchor.Centre };
         }
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
 
             if (result.Playfield != null)
             {

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

@@ -5,7 +5,7 @@ using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Mania.Mods
 {
-    public class ManiaModEasy : ModEasy
+    public class ManiaModEasy : ModEasyWithExtraLives
     {
         public override string Description => @"More forgiving HP drain, less accuracy required, and three lives!";
     }

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

@@ -30,6 +30,8 @@ namespace osu.Game.Rulesets.Mania.Objects.Drawables
 
         public void UpdateResult() => base.UpdateResult(true);
 
+        protected override double MaximumJudgementOffset => base.MaximumJudgementOffset * release_window_lenience;
+
         protected override void CheckForResult(bool userTriggered, double timeOffset)
         {
             Debug.Assert(HitObject.HitWindows != null);

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

@@ -97,7 +97,7 @@ namespace osu.Game.Rulesets.Mania.UI
             DrawableManiaHitObject maniaObject = (DrawableManiaHitObject)hitObject;
             maniaObject.CheckHittable = hitPolicy.IsHittable;
 
-            HitObjectContainer.Add(hitObject);
+            base.Add(hitObject);
         }
 
         public override bool Remove(DrawableHitObject h)

osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectBeatSnap.cs

@@ -0,0 +1,41 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Osu.UI;
+using osu.Game.Tests.Beatmaps;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Osu.Tests.Editor
+{
+    [TestFixture]
+    public class TestSceneObjectBeatSnap : TestSceneOsuEditor
+    {
+        private OsuPlayfield playfield;
+
+        protected override IBeatmap CreateBeatmap(RulesetInfo ruleset) => new TestBeatmap(Ruleset.Value, false);
+
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+            AddStep("get playfield", () => playfield = Editor.ChildrenOfType<OsuPlayfield>().First());
+        }
+
+        [Test]
+        public void TestBeatSnapHitCircle()
+        {
+            double firstTimingPointTime() => Beatmap.Value.Beatmap.ControlPointInfo.TimingPoints.First().Time;
+
+            AddStep("seek some milliseconds forward", () => EditorClock.Seek(firstTimingPointTime() + 10));
+
+            AddStep("move mouse to centre", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre));
+            AddStep("enter placement mode", () => InputManager.Key(Key.Number2));
+            AddStep("place first object", () => InputManager.Click(MouseButton.Left));
+
+            AddAssert("ensure object snapped back to correct time", () => EditorBeatmap.HitObjects.First().StartTime == firstTimingPointTime());
+        }
+    }
+}

osu.Game.Rulesets.Osu.Tests/Editor/TestSceneObjectObjectSnap.cs

@@ -25,6 +25,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
         {
             base.SetUpSteps();
             AddStep("get playfield", () => playfield = Editor.ChildrenOfType<OsuPlayfield>().First());
+            AddStep("seek to first control point", () => EditorClock.Seek(Beatmap.Value.Beatmap.ControlPointInfo.TimingPoints.First().Time));
         }
 
         [TestCase(true)]
@@ -51,7 +52,7 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
                 var first = (OsuHitObject)objects.First();
                 var second = (OsuHitObject)objects.Last();
 
-                return first.Position == second.Position;
+                return Precision.AlmostEquals(first.EndPosition, second.Position);
             });
         }
 
@@ -66,13 +67,13 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
             AddStep("start slider placement", () => InputManager.Click(MouseButton.Left));
 
-            AddStep("move to place end", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * 0.185f, 0)));
+            AddStep("move to place end", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * 0.225f, 0)));
 
             AddStep("end slider placement", () => InputManager.Click(MouseButton.Right));
 
             AddStep("enter circle placement mode", () => InputManager.Key(Key.Number2));
 
-            AddStep("move mouse slightly", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * 0.20f, 0)));
+            AddStep("move mouse slightly", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * 0.235f, 0)));
 
             AddStep("place second object", () => InputManager.Click(MouseButton.Left));
 
@@ -86,5 +87,64 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
                 return Precision.AlmostEquals(first.EndPosition, second.Position);
             });
         }
+
+        [Test]
+        public void TestSecondCircleInSelectionAlsoSnaps()
+        {
+            AddStep("move mouse to centre", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre));
+
+            AddStep("disable distance snap", () => InputManager.Key(Key.Q));
+
+            AddStep("enter placement mode", () => InputManager.Key(Key.Number2));
+
+            AddStep("place first object", () => InputManager.Click(MouseButton.Left));
+
+            AddStep("increment time", () => EditorClock.SeekForward(true));
+
+            AddStep("move mouse right", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * 0.2f, 0)));
+            AddStep("place second object", () => InputManager.Click(MouseButton.Left));
+
+            AddStep("increment time", () => EditorClock.SeekForward(true));
+
+            AddStep("move mouse down", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(0, playfield.ScreenSpaceDrawQuad.Width * 0.2f)));
+            AddStep("place third object", () => InputManager.Click(MouseButton.Left));
+
+            AddStep("enter selection mode", () => InputManager.Key(Key.Number1));
+
+            AddStep("select objects 2 and 3", () =>
+            {
+                // add selection backwards to test non-sequential time ordering
+                EditorBeatmap.SelectedHitObjects.Add(EditorBeatmap.HitObjects[2]);
+                EditorBeatmap.SelectedHitObjects.Add(EditorBeatmap.HitObjects[1]);
+            });
+
+            AddStep("begin drag", () => InputManager.PressButton(MouseButton.Left));
+
+            AddStep("move mouse slightly off centre", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * 0.02f, 0)));
+
+            AddAssert("object 3 snapped to 1", () =>
+            {
+                var objects = EditorBeatmap.HitObjects;
+
+                var first = (OsuHitObject)objects.First();
+                var third = (OsuHitObject)objects.Last();
+
+                return Precision.AlmostEquals(first.EndPosition, third.Position);
+            });
+
+            AddStep("move mouse slightly off centre", () => InputManager.MoveMouseTo(playfield.ScreenSpaceDrawQuad.Centre + new Vector2(playfield.ScreenSpaceDrawQuad.Width * -0.22f, playfield.ScreenSpaceDrawQuad.Width * 0.21f)));
+
+            AddAssert("object 2 snapped to 1", () =>
+            {
+                var objects = EditorBeatmap.HitObjects;
+
+                var first = (OsuHitObject)objects.First();
+                var second = (OsuHitObject)objects.ElementAt(1);
+
+                return Precision.AlmostEquals(first.EndPosition, second.Position);
+            });
+
+            AddStep("end drag", () => InputManager.ReleaseButton(MouseButton.Left));
+        }
     }
 }

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

@@ -174,6 +174,9 @@ namespace osu.Game.Rulesets.Osu.Tests.Editor
 
         private class SnapProvider : IPositionSnapProvider
         {
+            public SnapResult SnapScreenSpacePositionToValidPosition(Vector2 screenSpacePosition) =>
+                new SnapResult(screenSpacePosition, null);
+
             public SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition) => new SnapResult(screenSpacePosition, 0);
 
             public float GetBeatSnapDistanceAt(double referenceTime) => (float)beat_length;

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

@@ -5,7 +5,7 @@ using osu.Game.Tests.Visual;
 
 namespace osu.Game.Rulesets.Osu.Tests.Mods
 {
-    public class OsuModTestScene : ModTestScene
+    public abstract class OsuModTestScene : ModTestScene
     {
         protected override Ruleset CreatePlayerRuleset() => new OsuRuleset();
     }

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

@@ -108,8 +108,8 @@ namespace osu.Game.Rulesets.Osu.Tests
 
             AddStep("change samples", () => slider.HitObject.Samples = new[]
             {
-                new HitSampleInfo { Name = HitSampleInfo.HIT_CLAP },
+                new HitSampleInfo(HitSampleInfo.HIT_CLAP),
-                new HitSampleInfo { Name = HitSampleInfo.HIT_WHISTLE },
+                new HitSampleInfo(HitSampleInfo.HIT_WHISTLE),
             });
 
             AddAssert("head samples updated", () => assertSamples(slider.HitObject.HeadCircle));
@@ -136,15 +136,15 @@ namespace osu.Game.Rulesets.Osu.Tests
                 slider = (DrawableSlider)createSlider(repeats: 1);
 
                 for (int i = 0; i < 2; i++)
-                    slider.HitObject.NodeSamples.Add(new List<HitSampleInfo> { new HitSampleInfo { Name = HitSampleInfo.HIT_FINISH } });
+                    slider.HitObject.NodeSamples.Add(new List<HitSampleInfo> { new HitSampleInfo(HitSampleInfo.HIT_FINISH) });
 
                 Add(slider);
             });
 
             AddStep("change samples", () => slider.HitObject.Samples = new[]
             {
-                new HitSampleInfo { Name = HitSampleInfo.HIT_CLAP },
+                new HitSampleInfo(HitSampleInfo.HIT_CLAP),
-                new HitSampleInfo { Name = HitSampleInfo.HIT_WHISTLE },
+                new HitSampleInfo(HitSampleInfo.HIT_WHISTLE),
             });
 
             AddAssert("head samples not updated", () => assertSamples(slider.HitObject.HeadCircle));

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

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

@@ -45,9 +45,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.HitCircles
             return base.OnMouseDown(e);
         }
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
             HitObject.Position = ToLocalSpace(result.ScreenSpacePosition);
         }
     }

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

@@ -44,6 +44,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
         private OsuColour colours { get; set; }
 
         private IBindable<Vector2> sliderPosition;
+        private IBindable<float> sliderScale;
         private IBindable<Vector2> controlPointPosition;
 
         public PathControlPointPiece(Slider slider, PathControlPoint controlPoint)
@@ -69,13 +70,13 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
-                            Size = new Vector2(10),
+                            Size = new Vector2(20),
                         },
                         markerRing = new CircularContainer
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,
-                            Size = new Vector2(14),
+                            Size = new Vector2(28),
                             Masking = true,
                             BorderThickness = 2,
                             BorderColour = Color4.White,
@@ -102,6 +103,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
             controlPointPosition = ControlPoint.Position.GetBoundCopy();
             controlPointPosition.BindValueChanged(_ => updateMarkerDisplay());
 
+            sliderScale = slider.ScaleBindable.GetBoundCopy();
+            sliderScale.BindValueChanged(_ => updateMarkerDisplay());
+
             IsSelected.BindValueChanged(_ => updateMarkerDisplay());
 
             updateMarkerDisplay();
@@ -143,6 +147,8 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
         protected override bool OnClick(ClickEvent e) => RequestSelection != null;
 
+        private Vector2 dragStartPosition;
+
         protected override bool OnDragStart(DragStartEvent e)
         {
             if (RequestSelection == null)
@@ -150,6 +156,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
 
             if (e.Button == MouseButton.Left)
             {
+                dragStartPosition = ControlPoint.Position.Value;
                 changeHandler?.BeginChange();
                 return true;
             }
@@ -174,7 +181,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                     slider.Path.ControlPoints[i].Position.Value -= movementDelta;
             }
             else
-                ControlPoint.Position.Value += e.Delta;
+                ControlPoint.Position.Value = dragStartPosition + (e.MousePosition - e.MouseDownPosition);
         }
 
         protected override void OnDragEnd(DragEndEvent e) => changeHandler?.EndChange();
@@ -194,6 +201,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders.Components
                 colour = colour.Lighten(1);
 
             marker.Colour = colour;
+            marker.Scale = new Vector2(slider.Scale);
         }
     }
 }

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

@@ -67,9 +67,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             inputManager = GetContainingInputManager();
         }
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
 
             switch (state)
             {

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

@@ -44,6 +44,9 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
         [Resolved(CanBeNull = true)]
         private IEditorChangeHandler changeHandler { get; set; }
 
+        private readonly BindableList<PathControlPoint> controlPoints = new BindableList<PathControlPoint>();
+        private readonly IBindable<int> pathVersion = new Bindable<int>();
+
         public SliderSelectionBlueprint(DrawableSlider slider)
             : base(slider)
         {
@@ -61,13 +64,13 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             };
         }
 
-        private IBindable<int> pathVersion;
-
         protected override void LoadComplete()
         {
             base.LoadComplete();
 
-            pathVersion = HitObject.Path.Version.GetBoundCopy();
+            controlPoints.BindTo(HitObject.Path.ControlPoints);
+
+            pathVersion.BindTo(HitObject.Path.Version);
             pathVersion.BindValueChanged(_ => updatePath());
 
             BodyPiece.UpdateFrom(HitObject);
@@ -164,8 +167,6 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
             }
         }
 
-        private BindableList<PathControlPoint> controlPoints => HitObject.Path.ControlPoints;
-
         private int addControlPoint(Vector2 position)
         {
             position -= HitObject.Position;

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

@@ -1,63 +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 System;
-using System.Linq;
-using osu.Framework.Graphics;
-using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Osu.Objects.Drawables;
-
-namespace osu.Game.Rulesets.Osu.Edit
-{
-    public class DrawableOsuEditPool<T> : DrawableOsuPool<T>
-        where T : DrawableHitObject, new()
-    {
-        /// <summary>
-        /// Hit objects are intentionally made to fade out at a constant slower rate than in gameplay.
-        /// This allows a mapper to gain better historical context and use recent hitobjects as reference / snap points.
-        /// </summary>
-        private const double editor_hit_object_fade_out_extension = 700;
-
-        public DrawableOsuEditPool(Func<DrawableHitObject, double, bool> checkHittable, Action<Drawable> onLoaded, int initialSize, int? maximumSize = null)
-            : base(checkHittable, onLoaded, initialSize, maximumSize)
-        {
-        }
-
-        protected override T CreateNewDrawable() => base.CreateNewDrawable().With(d => d.ApplyCustomUpdateState += updateState);
-
-        private void updateState(DrawableHitObject hitObject, ArmedState state)
-        {
-            if (state == ArmedState.Idle)
-                return;
-
-            // adjust the visuals of certain object types to make them stay on screen for longer than usual.
-            switch (hitObject)
-            {
-                default:
-                    // there are quite a few drawable hit types we don't want to extend (spinners, ticks etc.)
-                    return;
-
-                case DrawableSlider _:
-                    // no specifics to sliders but let them fade slower below.
-                    break;
-
-                case DrawableHitCircle circle: // also handles slider heads
-                    circle.ApproachCircle
-                          .FadeOutFromOne(editor_hit_object_fade_out_extension)
-                          .Expire();
-                    break;
-            }
-
-            // Get the existing fade out transform
-            var existing = hitObject.Transforms.LastOrDefault(t => t.TargetMember == nameof(Alpha));
-
-            if (existing == null)
-                return;
-
-            hitObject.RemoveTransform(existing);
-
-            using (hitObject.BeginAbsoluteSequence(existing.StartTime))
-                hitObject.FadeOut(editor_hit_object_fade_out_extension).Expire();
-        }
-    }
-}

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

@@ -2,9 +2,12 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
-using osu.Framework.Graphics.Pooling;
+using System.Linq;
+using osu.Framework.Graphics;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.UI;
 using osuTK;
@@ -26,8 +29,51 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             protected override GameplayCursorContainer CreateCursor() => null;
 
-            protected override DrawablePool<TDrawable> CreatePool<TDrawable>(int initialSize, int? maximumSize = null)
+            protected override void OnNewDrawableHitObject(DrawableHitObject d)
-                => new DrawableOsuEditPool<TDrawable>(CheckHittable, OnHitObjectLoaded, initialSize, maximumSize);
+            {
+                d.ApplyCustomUpdateState += updateState;
+            }
+
+            /// <summary>
+            /// Hit objects are intentionally made to fade out at a constant slower rate than in gameplay.
+            /// This allows a mapper to gain better historical context and use recent hitobjects as reference / snap points.
+            /// </summary>
+            private const double editor_hit_object_fade_out_extension = 700;
+
+            private void updateState(DrawableHitObject hitObject, ArmedState state)
+            {
+                if (state == ArmedState.Idle)
+                    return;
+
+                // adjust the visuals of certain object types to make them stay on screen for longer than usual.
+                switch (hitObject)
+                {
+                    default:
+                        // there are quite a few drawable hit types we don't want to extend (spinners, ticks etc.)
+                        return;
+
+                    case DrawableSlider _:
+                        // no specifics to sliders but let them fade slower below.
+                        break;
+
+                    case DrawableHitCircle circle: // also handles slider heads
+                        circle.ApproachCircle
+                              .FadeOutFromOne(editor_hit_object_fade_out_extension)
+                              .Expire();
+                        break;
+                }
+
+                // Get the existing fade out transform
+                var existing = hitObject.Transforms.LastOrDefault(t => t.TargetMember == nameof(Alpha));
+
+                if (existing == null)
+                    return;
+
+                hitObject.RemoveTransform(existing);
+
+                using (hitObject.BeginAbsoluteSequence(existing.StartTime))
+                    hitObject.FadeOut(editor_hit_object_fade_out_extension).Expire();
+            }
         }
     }
 }

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

@@ -105,11 +105,20 @@ namespace osu.Game.Rulesets.Osu.Edit
             }
         }
 
-        public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
+        public override SnapResult SnapScreenSpacePositionToValidPosition(Vector2 screenSpacePosition)
         {
             if (snapToVisibleBlueprints(screenSpacePosition, out var snapResult))
                 return snapResult;
 
+            return new SnapResult(screenSpacePosition, null);
+        }
+
+        public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
+        {
+            var positionSnap = SnapScreenSpacePositionToValidPosition(screenSpacePosition);
+            if (positionSnap.ScreenSpacePosition != screenSpacePosition)
+                return positionSnap;
+
             // will be null if distance snap is disabled or not feasible for the current time value.
             if (distanceSnapGrid == null)
                 return base.SnapScreenSpacePositionToValidTime(screenSpacePosition);

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

@@ -5,7 +5,7 @@ using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Osu.Mods
 {
-    public class OsuModEasy : ModEasy
+    public class OsuModEasy : ModEasyWithExtraLives
     {
         public override string Description => @"Larger circles, more forgiving HP drain, less accuracy required, and three lives!";
     }

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

@@ -1,6 +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 osu.Framework.Bindables;
 using osuTK;
 using osuTK.Graphics;
 using osu.Framework.Extensions.Color4Extensions;
@@ -47,6 +48,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
             });
         }
 
-        public double AnimationStartTime { get; set; }
+        public Bindable<double> AnimationStartTime { get; } = new BindableDouble();
     }
 }

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

@@ -80,7 +80,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
                 fp.Alpha = 0;
                 fp.Scale = new Vector2(1.5f * end.Scale);
 
-                fp.AnimationStartTime = fadeInTime;
+                fp.AnimationStartTime.Value = fadeInTime;
 
                 using (fp.BeginAbsoluteSequence(fadeInTime))
                 {

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

@@ -19,7 +19,7 @@ using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
-    public class DrawableHitCircle : DrawableOsuHitObject, IDrawableHitObjectWithProxiedApproach
+    public class DrawableHitCircle : DrawableOsuHitObject
     {
         public OsuAction? HitAction => HitArea.HitAction;
         protected virtual OsuSkinComponents CirclePieceComponent => OsuSkinComponents.HitCircle;

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

@@ -9,9 +9,7 @@ using osu.Framework.Graphics;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Osu.Judgements;
 using osu.Game.Graphics.Containers;
-using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.UI;
-using osu.Game.Rulesets.Scoring;
 using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
@@ -53,26 +51,19 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             });
         }
 
-        protected override void OnApply(HitObject hitObject)
+        protected override void OnApply()
         {
-            base.OnApply(hitObject);
+            base.OnApply();
 
             IndexInCurrentComboBindable.BindTo(HitObject.IndexInCurrentComboBindable);
             PositionBindable.BindTo(HitObject.PositionBindable);
             StackHeightBindable.BindTo(HitObject.StackHeightBindable);
             ScaleBindable.BindTo(HitObject.ScaleBindable);
-
-            // Manually set to reduce the number of future alive objects to a bare minimum.
-            LifetimeStart = HitObject.StartTime - HitObject.TimePreempt;
-
-            // Arbitrary lifetime end to prevent past objects in idle states remaining alive in non-frame-stable contexts.
-            // An extra 1000ms is added to always overestimate the true lifetime, and a more exact value is set by hit transforms and the following expiry.
-            LifetimeEnd = HitObject.GetEndTime() + HitObject.HitWindows.WindowFor(HitResult.Miss) + 1000;
         }
 
-        protected override void OnFree(HitObject hitObject)
+        protected override void OnFree()
         {
-            base.OnFree(hitObject);
+            base.OnFree();
 
             IndexInCurrentComboBindable.UnbindFrom(HitObject.IndexInCurrentComboBindable);
             PositionBindable.UnbindFrom(HitObject.PositionBindable);

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

@@ -1,32 +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 System;
-using osu.Framework.Graphics;
-using osu.Framework.Graphics.Pooling;
-using osu.Game.Rulesets.Objects.Drawables;
-
-namespace osu.Game.Rulesets.Osu.Objects.Drawables
-{
-    public class DrawableOsuPool<T> : DrawablePool<T>
-        where T : DrawableHitObject, new()
-    {
-        private readonly Func<DrawableHitObject, double, bool> checkHittable;
-        private readonly Action<Drawable> onLoaded;
-
-        public DrawableOsuPool(Func<DrawableHitObject, double, bool> checkHittable, Action<Drawable> onLoaded, int initialSize, int? maximumSize = null)
-            : base(initialSize, maximumSize)
-        {
-            this.checkHittable = checkHittable;
-            this.onLoaded = onLoaded;
-        }
-
-        protected override T CreateNewDrawable() => base.CreateNewDrawable().With(o =>
-        {
-            var osuObject = (DrawableOsuHitObject)(object)o;
-
-            osuObject.CheckHittable = checkHittable;
-            osuObject.OnLoadComplete += onLoaded;
-        });
-    }
-}

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

@@ -19,7 +19,7 @@ using osu.Game.Skinning;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
-    public class DrawableSlider : DrawableOsuHitObject, IDrawableHitObjectWithProxiedApproach
+    public class DrawableSlider : DrawableOsuHitObject
     {
         public new Slider HitObject => (Slider)base.HitObject;
 
@@ -86,18 +86,18 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             Tracking.BindValueChanged(updateSlidingSample);
         }
 
-        protected override void OnApply(HitObject hitObject)
+        protected override void OnApply()
         {
-            base.OnApply(hitObject);
+            base.OnApply();
 
             // Ensure that the version will change after the upcoming BindTo().
             pathVersion.Value = int.MaxValue;
             PathVersion.BindTo(HitObject.Path.Version);
         }
 
-        protected override void OnFree(HitObject hitObject)
+        protected override void OnFree()
         {
-            base.OnFree(hitObject);
+            base.OnFree();
 
             PathVersion.UnbindFrom(HitObject.Path.Version);
         }
@@ -115,8 +115,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
             if (firstSample != null)
             {
-                var clone = HitObject.SampleControlPoint.ApplyTo(firstSample);
+                var clone = HitObject.SampleControlPoint.ApplyTo(firstSample).With("sliderslide");
-                clone.Name = "sliderslide";
 
                 samplesContainer.Add(slidingSample = new PausableSkinnableSound(clone)
                 {
@@ -255,7 +254,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             if (userTriggered || Time.Current < HitObject.EndTime)
                 return;
 
-            ApplyResult(r => r.Type = r.Judgement.MaxResult);
+            ApplyResult(r => r.Type = NestedHitObjects.Any(h => h.Result.IsHit) ? r.Judgement.MaxResult : r.Judgement.MinResult);
         }
 
         public override void PlaySamples()
@@ -294,14 +293,14 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             {
                 case ArmedState.Hit:
                     Ball.ScaleTo(HitObject.Scale * 1.4f, fade_out_time, Easing.Out);
+                    if (sliderBody?.SnakingOut.Value == true)
+                        Body.FadeOut(40); // short fade to allow for any body colour to smoothly disappear.
                     break;
             }
 
             this.FadeOut(fade_out_time, Easing.OutQuint).Expire();
         }
 
-        public Drawable ProxiedLayer => HeadCircle.ProxiedLayer;
-
         public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => sliderBody?.ReceivePositionalInputAt(screenSpacePos) ?? base.ReceivePositionalInputAt(screenSpacePos);
 
         private class DefaultSliderBody : PlaySliderBody

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

@@ -4,7 +4,6 @@
 using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
-using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Types;
 
@@ -36,9 +35,9 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             pathVersion.BindValueChanged(_ => updatePosition());
         }
 
-        protected override void OnFree(HitObject hitObject)
+        protected override void OnFree()
         {
-            base.OnFree(hitObject);
+            base.OnFree();
 
             pathVersion.UnbindFrom(drawableSlider.PathVersion);
         }

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

@@ -110,8 +110,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
             if (firstSample != null)
             {
-                var clone = HitObject.SampleControlPoint.ApplyTo(firstSample);
+                var clone = HitObject.SampleControlPoint.ApplyTo(firstSample).With("spinnerspin");
-                clone.Name = "spinnerspin";
 
                 samplesContainer.Add(spinningSample = new PausableSkinnableSound(clone)
                 {

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

@@ -1,6 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Game.Rulesets.Objects.Drawables;
+
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
     public class DrawableSpinnerTick : DrawableOsuHitObject
@@ -17,6 +19,16 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         {
         }
 
+        private DrawableSpinner drawableSpinner;
+
+        protected override void OnParentReceived(DrawableHitObject parent)
+        {
+            base.OnParentReceived(parent);
+            drawableSpinner = (DrawableSpinner)parent;
+        }
+
+        protected override double MaximumJudgementOffset => drawableSpinner.HitObject.Duration;
+
         /// <summary>
         /// Apply a judgement result.
         /// </summary>

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

@@ -38,7 +38,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             };
         }
 
-        private readonly IBindable<ArmedState> state = new Bindable<ArmedState>();
         private readonly IBindable<Color4> accentColour = new Bindable<Color4>();
         private readonly IBindable<int> indexInCurrentCombo = new Bindable<int>();
 
@@ -50,7 +49,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
         {
             var drawableOsuObject = (DrawableOsuHitObject)drawableObject;
 
-            state.BindTo(drawableObject.State);
             accentColour.BindTo(drawableObject.AccentColour);
             indexInCurrentCombo.BindTo(drawableOsuObject.IndexInCurrentComboBindable);
         }
@@ -59,7 +57,6 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
         {
             base.LoadComplete();
 
-            state.BindValueChanged(updateState, true);
             accentColour.BindValueChanged(colour =>
             {
                 explode.Colour = colour.NewValue;
@@ -68,15 +65,18 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             }, true);
 
             indexInCurrentCombo.BindValueChanged(index => number.Text = (index.NewValue + 1).ToString(), true);
+
+            drawableObject.ApplyCustomUpdateState += updateState;
+            updateState(drawableObject, drawableObject.State.Value);
         }
 
-        private void updateState(ValueChangedEvent<ArmedState> state)
+        private void updateState(DrawableHitObject drawableObject, ArmedState state)
         {
             using (BeginAbsoluteSequence(drawableObject.HitStateUpdateTime, true))
             {
                 glow.FadeOut(400);
 
-                switch (state.NewValue)
+                switch (state)
                 {
                     case ArmedState.Hit:
                         const double flash_in = 40;

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

@@ -248,7 +248,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Pieces
             }
 
             private void trackingChanged(ValueChangedEvent<bool> tracking) =>
-                box.FadeTo(tracking.NewValue ? 0.6f : 0.05f, 200, Easing.OutQuint);
+                box.FadeTo(tracking.NewValue ? 0.3f : 0.05f, 200, Easing.OutQuint);
         }
     }
 }

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

@@ -221,14 +221,7 @@ namespace osu.Game.Rulesets.Osu.Objects
             var sampleList = new List<HitSampleInfo>();
 
             if (firstSample != null)
-            {
+                sampleList.Add(firstSample.With("slidertick"));
-                sampleList.Add(new HitSampleInfo
-                {
-                    Bank = firstSample.Bank,
-                    Volume = firstSample.Volume,
-                    Name = @"slidertick",
-                });
-            }
 
             foreach (var tick in NestedHitObjects.OfType<SliderTick>())
                 tick.Samples = sampleList;

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

@@ -11,7 +11,7 @@ namespace osu.Game.Rulesets.Osu.Objects
     {
         public SpinnerBonusTick()
         {
-            Samples.Add(new HitSampleInfo { Name = "spinnerbonus" });
+            Samples.Add(new HitSampleInfo("spinnerbonus"));
         }
 
         public override Judgement CreateJudgement() => new OsuSpinnerBonusTickJudgement();

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

@@ -38,7 +38,6 @@ namespace osu.Game.Rulesets.Osu.Skinning
 
         private SkinnableSpriteText hitCircleText;
 
-        private readonly IBindable<ArmedState> state = new Bindable<ArmedState>();
         private readonly Bindable<Color4> accentColour = new Bindable<Color4>();
         private readonly IBindable<int> indexInCurrentCombo = new Bindable<int>();
 
@@ -113,7 +112,6 @@ namespace osu.Game.Rulesets.Osu.Skinning
             if (overlayAboveNumber)
                 AddInternal(hitCircleOverlay.CreateProxy());
 
-            state.BindTo(drawableObject.State);
             accentColour.BindTo(drawableObject.AccentColour);
             indexInCurrentCombo.BindTo(drawableOsuObject.IndexInCurrentComboBindable);
 
@@ -137,19 +135,21 @@ namespace osu.Game.Rulesets.Osu.Skinning
         {
             base.LoadComplete();
 
-            state.BindValueChanged(updateState, true);
             accentColour.BindValueChanged(colour => hitCircleSprite.Colour = LegacyColourCompatibility.DisallowZeroAlpha(colour.NewValue), true);
             if (hasNumber)
                 indexInCurrentCombo.BindValueChanged(index => hitCircleText.Text = (index.NewValue + 1).ToString(), true);
+
+            drawableObject.ApplyCustomUpdateState += updateState;
+            updateState(drawableObject, drawableObject.State.Value);
         }
 
-        private void updateState(ValueChangedEvent<ArmedState> state)
+        private void updateState(DrawableHitObject drawableObject, ArmedState state)
         {
             const double legacy_fade_duration = 240;
 
             using (BeginAbsoluteSequence(drawableObject.HitStateUpdateTime, true))
             {
-                switch (state.NewValue)
+                switch (state)
                 {
                     case ArmedState.Hit:
                         circleSprites.FadeOut(legacy_fade_duration, Easing.Out);

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

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -25,8 +26,6 @@ namespace osu.Game.Rulesets.Osu.UI
 {
     public class OsuPlayfield : Playfield
     {
-        public readonly Func<DrawableHitObject, double, bool> CheckHittable;
-
         private readonly PlayfieldBorder playfieldBorder;
         private readonly ProxyContainer approachCircles;
         private readonly ProxyContainer spinnerProxies;
@@ -56,7 +55,6 @@ namespace osu.Game.Rulesets.Osu.UI
             };
 
             hitPolicy = new OrderedHitPolicy(HitObjectContainer);
-            CheckHittable = hitPolicy.IsHittable;
 
             var hitWindows = new OsuHitWindows();
 
@@ -68,6 +66,29 @@ namespace osu.Game.Rulesets.Osu.UI
             NewResult += onNewResult;
         }
 
+        protected override void OnNewDrawableHitObject(DrawableHitObject drawable)
+        {
+            ((DrawableOsuHitObject)drawable).CheckHittable = hitPolicy.IsHittable;
+
+            Debug.Assert(!drawable.IsLoaded, $"Already loaded {nameof(DrawableHitObject)} is added to {nameof(OsuPlayfield)}");
+            drawable.OnLoadComplete += onDrawableHitObjectLoaded;
+        }
+
+        private void onDrawableHitObjectLoaded(Drawable drawable)
+        {
+            // note: `Slider`'s `ProxiedLayer` is added when its nested `DrawableHitCircle` is loaded.
+            switch (drawable)
+            {
+                case DrawableSpinner _:
+                    spinnerProxies.Add(drawable.CreateProxy());
+                    break;
+
+                case DrawableHitCircle hitCircle:
+                    approachCircles.Add(hitCircle.ProxiedLayer.CreateProxy());
+                    break;
+            }
+        }
+
         private void onJudgmentLoaded(DrawableOsuJudgement judgement)
         {
             judgementAboveHitObjectLayer.Add(judgement.GetProxyAboveHitObjectsContent());
@@ -78,28 +99,19 @@ namespace osu.Game.Rulesets.Osu.UI
         {
             config?.BindWith(OsuRulesetSetting.PlayfieldBorderStyle, playfieldBorder.PlayfieldBorderStyle);
 
-            registerPool<HitCircle, DrawableHitCircle>(10, 100);
+            RegisterPool<HitCircle, DrawableHitCircle>(10, 100);
 
-            registerPool<Slider, DrawableSlider>(10, 100);
+            RegisterPool<Slider, DrawableSlider>(10, 100);
-            registerPool<SliderHeadCircle, DrawableSliderHead>(10, 100);
+            RegisterPool<SliderHeadCircle, DrawableSliderHead>(10, 100);
-            registerPool<SliderTailCircle, DrawableSliderTail>(10, 100);
+            RegisterPool<SliderTailCircle, DrawableSliderTail>(10, 100);
-            registerPool<SliderTick, DrawableSliderTick>(10, 100);
+            RegisterPool<SliderTick, DrawableSliderTick>(10, 100);
-            registerPool<SliderRepeat, DrawableSliderRepeat>(5, 50);
+            RegisterPool<SliderRepeat, DrawableSliderRepeat>(5, 50);
 
-            registerPool<Spinner, DrawableSpinner>(2, 20);
+            RegisterPool<Spinner, DrawableSpinner>(2, 20);
-            registerPool<SpinnerTick, DrawableSpinnerTick>(10, 100);
+            RegisterPool<SpinnerTick, DrawableSpinnerTick>(10, 100);
-            registerPool<SpinnerBonusTick, DrawableSpinnerBonusTick>(10, 100);
+            RegisterPool<SpinnerBonusTick, DrawableSpinnerBonusTick>(10, 100);
         }
 
-        private void registerPool<TObject, TDrawable>(int initialSize, int? maximumSize = null)
-            where TObject : HitObject
-            where TDrawable : DrawableHitObject, new()
-            => RegisterPool<TObject, TDrawable>(CreatePool<TDrawable>(initialSize, maximumSize));
-
-        protected virtual DrawablePool<TDrawable> CreatePool<TDrawable>(int initialSize, int? maximumSize = null)
-            where TDrawable : DrawableHitObject, new()
-            => new DrawableOsuPool<TDrawable>(CheckHittable, OnHitObjectLoaded, initialSize, maximumSize);
-
         protected override HitObjectLifetimeEntry CreateLifetimeEntry(HitObject hitObject) => new OsuHitObjectLifetimeEntry(hitObject);
 
         protected override void OnHitObjectAdded(HitObject hitObject)
@@ -114,27 +126,6 @@ namespace osu.Game.Rulesets.Osu.UI
             followPoints.RemoveFollowPoints((OsuHitObject)hitObject);
         }
 
-        public void OnHitObjectLoaded(Drawable drawable)
-        {
-            switch (drawable)
-            {
-                case DrawableSliderHead _:
-                case DrawableSliderTail _:
-                case DrawableSliderTick _:
-                case DrawableSliderRepeat _:
-                case DrawableSpinnerTick _:
-                    break;
-
-                case DrawableSpinner _:
-                    spinnerProxies.Add(drawable.CreateProxy());
-                    break;
-
-                case IDrawableHitObjectWithProxiedApproach approach:
-                    approachCircles.Add(approach.ProxiedLayer.CreateProxy());
-                    break;
-            }
-        }
-
         private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
         {
             // Hitobjects that block future hits should miss previous hitobjects if they're hit out-of-order.
@@ -185,6 +176,8 @@ namespace osu.Game.Rulesets.Osu.UI
             public OsuHitObjectLifetimeEntry(HitObject hitObject)
                 : base(hitObject)
             {
+                // Prevent past objects in idles states from remaining alive as their end times are skipped in non-frame-stable contexts.
+                LifetimeEnd = HitObject.GetEndTime() + HitObject.HitWindows.WindowFor(HitResult.Miss);
             }
 
             protected override double InitialLifetimeOffset => ((OsuHitObject)HitObject).TimePreempt;

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

@@ -2,7 +2,7 @@
   <Import Project="..\osu.TestProject.props" />
   <ItemGroup Label="Package References">
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.0" />
     <PackageReference Include="NUnit" Version="3.12.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
     <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />

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

@@ -43,10 +43,10 @@ namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
             return false;
         }
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
             piece.Position = ToLocalSpace(result.ScreenSpacePosition);
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
         }
     }
 }

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

@@ -68,9 +68,9 @@ namespace osu.Game.Rulesets.Taiko.Edit.Blueprints
             EndPlacement(true);
         }
 
-        public override void UpdatePosition(SnapResult result)
+        public override void UpdateTimeAndPosition(SnapResult result)
         {
-            base.UpdatePosition(result);
+            base.UpdateTimeAndPosition(result);
 
             if (PlacementActive)
             {

osu.Game.Rulesets.Taiko/Mods/TaikoModEasy.cs

@@ -7,6 +7,6 @@ namespace osu.Game.Rulesets.Taiko.Mods
 {
     public class TaikoModEasy : ModEasy
     {
-        public override string Description => @"Beats move slower, less accuracy required, and three lives!";
+        public override string Description => @"Beats move slower, and less accuracy required!";
     }
 }

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

@@ -28,6 +28,8 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 Filled = HitObject.FirstTick
             });
 
+        protected override double MaximumJudgementOffset => HitObject.HitWindow;
+
         protected override void CheckForResult(bool userTriggered, double timeOffset)
         {
             if (!userTriggered)

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

@@ -79,7 +79,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             if (isRimType != rimSamples.Any())
             {
                 if (isRimType)
-                    HitObject.Samples.Add(new HitSampleInfo { Name = HitSampleInfo.HIT_CLAP });
+                    HitObject.Samples.Add(new HitSampleInfo(HitSampleInfo.HIT_CLAP));
                 else
                 {
                     foreach (var sample in rimSamples)
@@ -125,9 +125,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                     if (s.Name != HitSampleInfo.HIT_FINISH)
                         continue;
 
-                    var sClone = s.Clone();
+                    corrected[i] = s.With(HitSampleInfo.HIT_WHISTLE);
-                    sClone.Name = HitSampleInfo.HIT_WHISTLE;
-                    corrected[i] = sClone;
                 }
 
                 return corrected;

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

@@ -169,7 +169,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             if (isStrong.Value != strongSamples.Any())
             {
                 if (isStrong.Value)
-                    HitObject.Samples.Add(new HitSampleInfo { Name = HitSampleInfo.HIT_FINISH });
+                    HitObject.Samples.Add(new HitSampleInfo(HitSampleInfo.HIT_FINISH));
                 else
                 {
                     foreach (var sample in strongSamples)

osu.Game.Rulesets.Taiko/UI/TaikoPlayfield.cs

@@ -1,6 +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.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
@@ -37,7 +38,7 @@ namespace osu.Game.Rulesets.Taiko.UI
         private SkinnableDrawable mascot;
 
         private ProxyContainer topLevelHitContainer;
-        private ProxyContainer barlineContainer;
+        private ScrollingHitObjectContainer barlineContainer;
         private Container rightArea;
         private Container leftArea;
 
@@ -83,10 +84,7 @@ namespace osu.Game.Rulesets.Taiko.UI
                             RelativeSizeAxes = Axes.Both,
                             Children = new Drawable[]
                             {
-                                barlineContainer = new ProxyContainer
+                                barlineContainer = new ScrollingHitObjectContainer(),
-                                {
-                                    RelativeSizeAxes = Axes.Both,
-                                },
                                 new Container
                                 {
                                     Name = "Hit objects",
@@ -159,18 +157,37 @@ namespace osu.Game.Rulesets.Taiko.UI
 
         public override void Add(DrawableHitObject h)
         {
-            h.OnNewResult += OnNewResult;
-            base.Add(h);
-
             switch (h)
             {
                 case DrawableBarLine barline:
-                    barlineContainer.Add(barline.CreateProxy());
+                    barlineContainer.Add(barline);
                     break;
 
                 case DrawableTaikoHitObject taikoObject:
+                    h.OnNewResult += OnNewResult;
                     topLevelHitContainer.Add(taikoObject.CreateProxiedContent());
+                    base.Add(h);
                     break;
+
+                default:
+                    throw new ArgumentException($"Unsupported {nameof(DrawableHitObject)} type");
+            }
+        }
+
+        public override bool Remove(DrawableHitObject h)
+        {
+            switch (h)
+            {
+                case DrawableBarLine barline:
+                    return barlineContainer.Remove(barline);
+
+                case DrawableTaikoHitObject _:
+                    h.OnNewResult -= OnNewResult;
+                    // todo: consider tidying of proxied content if required.
+                    return base.Remove(h);
+
+                default:
+                    throw new ArgumentException($"Unsupported {nameof(DrawableHitObject)} type");
             }
         }
 

osu.Game.Tests/Editing/EditorChangeHandlerTest.cs

@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using NUnit.Framework;
-using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Screens.Edit;
@@ -44,6 +43,36 @@ namespace osu.Game.Tests.Editing
             Assert.That(stateChangedFired, Is.EqualTo(2));
         }
 
+        [Test]
+        public void TestApplyThenUndoThenApplySameChange()
+        {
+            var (handler, beatmap) = createChangeHandler();
+
+            Assert.That(handler.CanUndo.Value, Is.False);
+            Assert.That(handler.CanRedo.Value, Is.False);
+
+            string originalHash = handler.CurrentStateHash;
+
+            addArbitraryChange(beatmap);
+            handler.SaveState();
+
+            Assert.That(handler.CanUndo.Value, Is.True);
+            Assert.That(handler.CanRedo.Value, Is.False);
+            Assert.That(stateChangedFired, Is.EqualTo(1));
+
+            string hash = handler.CurrentStateHash;
+
+            // undo a change without saving
+            handler.RestoreState(-1);
+
+            Assert.That(originalHash, Is.EqualTo(handler.CurrentStateHash));
+            Assert.That(stateChangedFired, Is.EqualTo(2));
+
+            addArbitraryChange(beatmap);
+            handler.SaveState();
+            Assert.That(hash, Is.EqualTo(handler.CurrentStateHash));
+        }
+
         [Test]
         public void TestSaveSameStateDoesNotSave()
         {
@@ -139,7 +168,7 @@ namespace osu.Game.Tests.Editing
 
         private void addArbitraryChange(EditorBeatmap beatmap)
         {
-            beatmap.Add(new HitCircle { StartTime = RNG.Next(0, 100000) });
+            beatmap.Add(new HitCircle { StartTime = 2760 });
         }
     }
 }

osu.Game.Tests/Editing/LegacyEditorBeatmapPatcherTest.cs

@@ -139,7 +139,7 @@ namespace osu.Game.Tests.Editing
                 HitObjects =
                 {
                     (OsuHitObject)current.HitObjects[0],
-                    new HitCircle { StartTime = 2000, Samples = { new HitSampleInfo { Name = HitSampleInfo.HIT_FINISH } } },
+                    new HitCircle { StartTime = 2000, Samples = { new HitSampleInfo(HitSampleInfo.HIT_FINISH) } },
                     (OsuHitObject)current.HitObjects[2],
                 }
             };
@@ -268,12 +268,12 @@ namespace osu.Game.Tests.Editing
                 HitObjects =
                 {
                     (OsuHitObject)current.HitObjects[0],
-                    new HitCircle { StartTime = 1000, Samples = { new HitSampleInfo { Name = HitSampleInfo.HIT_FINISH } } },
+                    new HitCircle { StartTime = 1000, Samples = { new HitSampleInfo(HitSampleInfo.HIT_FINISH) } },
                     (OsuHitObject)current.HitObjects[2],
                     (OsuHitObject)current.HitObjects[3],
-                    new HitCircle { StartTime = 2250, Samples = { new HitSampleInfo { Name = HitSampleInfo.HIT_WHISTLE } } },
+                    new HitCircle { StartTime = 2250, Samples = { new HitSampleInfo(HitSampleInfo.HIT_WHISTLE) } },
                     (OsuHitObject)current.HitObjects[5],
-                    new HitCircle { StartTime = 3000, Samples = { new HitSampleInfo { Name = HitSampleInfo.HIT_CLAP } } },
+                    new HitCircle { StartTime = 3000, Samples = { new HitSampleInfo(HitSampleInfo.HIT_CLAP) } },
                     (OsuHitObject)current.HitObjects[7],
                 }
             };

osu.Game.Tests/NonVisual/Skinning/LegacySkinAnimationTest.cs

@@ -0,0 +1,79 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Audio.Sample;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Animations;
+using osu.Framework.Graphics.OpenGL.Textures;
+using osu.Framework.Graphics.Textures;
+using osu.Framework.Testing;
+using osu.Framework.Timing;
+using osu.Game.Audio;
+using osu.Game.Skinning;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Tests.NonVisual.Skinning
+{
+    [HeadlessTest]
+    public class LegacySkinAnimationTest : OsuTestScene
+    {
+        private const string animation_name = "animation";
+        private const int frame_count = 6;
+
+        [Cached(typeof(IAnimationTimeReference))]
+        private TestAnimationTimeReference animationTimeReference = new TestAnimationTimeReference();
+
+        private TextureAnimation animation;
+
+        [Test]
+        public void TestAnimationTimeReferenceChange()
+        {
+            ISkin skin = new TestSkin();
+
+            AddStep("get animation", () => Add(animation = (TextureAnimation)skin.GetAnimation(animation_name, true, false)));
+            AddAssert("frame count correct", () => animation.FrameCount == frame_count);
+            assertPlaybackPosition(0);
+
+            AddStep("set start time to 1000", () => animationTimeReference.AnimationStartTime.Value = 1000);
+            assertPlaybackPosition(-1000);
+
+            AddStep("set current time to 500", () => animationTimeReference.ManualClock.CurrentTime = 500);
+            assertPlaybackPosition(-500);
+        }
+
+        private void assertPlaybackPosition(double expectedPosition)
+            => AddAssert($"playback position is {expectedPosition}", () => animation.PlaybackPosition == expectedPosition);
+
+        private class TestSkin : ISkin
+        {
+            private static readonly string[] lookup_names = Enumerable.Range(0, frame_count).Select(frame => $"{animation_name}-{frame}").ToArray();
+
+            public Texture GetTexture(string componentName, WrapMode wrapModeS, WrapMode wrapModeT)
+            {
+                return lookup_names.Contains(componentName) ? Texture.WhitePixel : null;
+            }
+
+            public Drawable GetDrawableComponent(ISkinComponent component) => throw new NotSupportedException();
+            public SampleChannel GetSample(ISampleInfo sampleInfo) => throw new NotSupportedException();
+            public IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup) => throw new NotSupportedException();
+        }
+
+        private class TestAnimationTimeReference : IAnimationTimeReference
+        {
+            public ManualClock ManualClock { get; }
+            public IFrameBasedClock Clock { get; }
+            public Bindable<double> AnimationStartTime { get; } = new BindableDouble();
+
+            public TestAnimationTimeReference()
+            {
+                ManualClock = new ManualClock();
+                Clock = new FramedClock(ManualClock);
+            }
+        }
+    }
+}

osu.Game.Tests/Visual/Background/TestSceneUserDimBackgrounds.cs

@@ -318,7 +318,7 @@ namespace osu.Game.Tests.Visual.Background
         private class FadeAccessibleResults : ResultsScreen
         {
             public FadeAccessibleResults(ScoreInfo score)
-                : base(score)
+                : base(score, true)
             {
             }
 

osu.Game.Tests/Visual/Editing/TestSceneDistanceSnapGrid.cs

@@ -153,6 +153,9 @@ namespace osu.Game.Tests.Visual.Editing
 
         private class SnapProvider : IPositionSnapProvider
         {
+            public SnapResult SnapScreenSpacePositionToValidPosition(Vector2 screenSpacePosition) =>
+                new SnapResult(screenSpacePosition, null);
+
             public SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition) => new SnapResult(screenSpacePosition, 0);
 
             public float GetBeatSnapDistanceAt(double referenceTime) => 10;

osu.Game.Tests/Visual/Gameplay/TestSceneDrawableScrollingRuleset.cs

@@ -21,13 +21,13 @@ using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Objects.Legacy;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.UI;
 using osu.Game.Rulesets.UI.Scrolling;
 using osuTK;
 using osuTK.Graphics;
+using JetBrains.Annotations;
 
 namespace osu.Game.Tests.Visual.Gameplay
 {
@@ -46,6 +46,50 @@ namespace osu.Game.Tests.Visual.Gameplay
         [SetUp]
         public void Setup() => Schedule(() => testClock.CurrentTime = 0);
 
+        [TestCase("pooled")]
+        [TestCase("non-pooled")]
+        public void TestHitObjectLifetime(string pooled)
+        {
+            var beatmap = createBeatmap(_ => pooled == "pooled" ? new TestPooledHitObject() : new TestHitObject());
+            beatmap.ControlPointInfo.Add(0, new TimingControlPoint { BeatLength = time_range });
+            createTest(beatmap);
+
+            assertPosition(0, 0f);
+            assertDead(3);
+
+            setTime(3 * time_range);
+            assertPosition(3, 0f);
+            assertDead(0);
+
+            setTime(0 * time_range);
+            assertPosition(0, 0f);
+            assertDead(3);
+        }
+
+        [TestCase("pooled")]
+        [TestCase("non-pooled")]
+        public void TestNestedHitObject(string pooled)
+        {
+            var beatmap = createBeatmap(i =>
+            {
+                var h = pooled == "pooled" ? new TestPooledParentHitObject() : new TestParentHitObject();
+                h.Duration = 300;
+                h.ChildTimeOffset = i % 3 * 100;
+                return h;
+            });
+            beatmap.ControlPointInfo.Add(0, new TimingControlPoint { BeatLength = time_range });
+            createTest(beatmap);
+
+            assertPosition(0, 0f);
+            assertHeight(0);
+            assertChildPosition(0);
+
+            setTime(5 * time_range);
+            assertPosition(5, 0f);
+            assertHeight(5);
+            assertChildPosition(5);
+        }
+
         [Test]
         public void TestRelativeBeatLengthScaleSingleTimingPoint()
         {
@@ -147,8 +191,37 @@ namespace osu.Game.Tests.Visual.Gameplay
             assertPosition(1, 1);
         }
 
+        /// <summary>
+        /// Get a <see cref="DrawableTestHitObject" /> corresponding to the <paramref name="index"/>'th <see cref="TestHitObject"/>.
+        /// When the hit object is not alive, `null` is returned.
+        /// </summary>
+        [CanBeNull]
+        private DrawableTestHitObject getDrawableHitObject(int index)
+        {
+            var hitObject = drawableRuleset.Beatmap.HitObjects.ElementAt(index);
+            return (DrawableTestHitObject)drawableRuleset.Playfield.HitObjectContainer.AliveObjects.FirstOrDefault(obj => obj.HitObject == hitObject);
+        }
+
+        private float yScale => drawableRuleset.Playfield.HitObjectContainer.DrawHeight;
+
+        private void assertDead(int index) => AddAssert($"hitobject {index} is dead", () => getDrawableHitObject(index) == null);
+
+        private void assertHeight(int index) => AddAssert($"hitobject {index} height", () =>
+        {
+            var d = getDrawableHitObject(index);
+            return d != null && Precision.AlmostEquals(d.DrawHeight, yScale * (float)(d.HitObject.Duration / time_range), 0.1f);
+        });
+
+        private void assertChildPosition(int index) => AddAssert($"hitobject {index} child position", () =>
+        {
+            var d = getDrawableHitObject(index);
+            return d is DrawableTestParentHitObject && Precision.AlmostEquals(
+                d.NestedHitObjects.First().DrawPosition.Y,
+                yScale * (float)((TestParentHitObject)d.HitObject).ChildTimeOffset / time_range, 0.1f);
+        });
+
         private void assertPosition(int index, float relativeY) => AddAssert($"hitobject {index} at {relativeY}",
-            () => Precision.AlmostEquals(drawableRuleset.Playfield.AllHitObjects.ElementAt(index).DrawPosition.Y, drawableRuleset.Playfield.HitObjectContainer.DrawHeight * relativeY));
+            () => Precision.AlmostEquals(getDrawableHitObject(index)?.DrawPosition.Y ?? -1, yScale * relativeY));
 
         private void setTime(double time)
         {
@@ -160,12 +233,16 @@ namespace osu.Game.Tests.Visual.Gameplay
         /// The hitobjects are spaced <see cref="time_range"/> milliseconds apart.
         /// </summary>
         /// <returns>The <see cref="IBeatmap"/>.</returns>
-        private IBeatmap createBeatmap()
+        private IBeatmap createBeatmap(Func<int, TestHitObject> createAction = null)
         {
-            var beatmap = new Beatmap<HitObject> { BeatmapInfo = { Ruleset = new OsuRuleset().RulesetInfo } };
+            var beatmap = new Beatmap<TestHitObject> { BeatmapInfo = { Ruleset = new OsuRuleset().RulesetInfo } };
 
             for (int i = 0; i < 10; i++)
-                beatmap.HitObjects.Add(new HitObject { StartTime = i * time_range });
+            {
+                var h = createAction?.Invoke(i) ?? new TestHitObject();
+                h.StartTime = i * time_range;
+                beatmap.HitObjects.Add(h);
+            }
 
             return beatmap;
         }
@@ -225,7 +302,21 @@ namespace osu.Game.Tests.Visual.Gameplay
                 TimeRange.Value = time_range;
             }
 
-            public override DrawableHitObject<TestHitObject> CreateDrawableRepresentation(TestHitObject h) => new DrawableTestHitObject(h);
+            public override DrawableHitObject<TestHitObject> CreateDrawableRepresentation(TestHitObject h)
+            {
+                switch (h)
+                {
+                    case TestPooledHitObject _:
+                    case TestPooledParentHitObject _:
+                        return null;
+
+                    case TestParentHitObject p:
+                        return new DrawableTestParentHitObject(p);
+
+                    default:
+                        return new DrawableTestHitObject(h);
+                }
+            }
 
             protected override PassThroughInputManager CreateInputManager() => new PassThroughInputManager();
 
@@ -265,6 +356,9 @@ namespace osu.Game.Tests.Visual.Gameplay
                         }
                     }
                 });
+
+                RegisterPool<TestPooledHitObject, DrawableTestPooledHitObject>(1);
+                RegisterPool<TestPooledParentHitObject, DrawableTestPooledParentHitObject>(1);
             }
         }
 
@@ -277,30 +371,46 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             public override bool CanConvert() => true;
 
-            protected override IEnumerable<TestHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap, CancellationToken cancellationToken)
+            protected override IEnumerable<TestHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap, CancellationToken cancellationToken) =>
-            {
+                throw new NotImplementedException();
-                yield return new TestHitObject
-                {
-                    StartTime = original.StartTime,
-                    Duration = (original as IHasDuration)?.Duration ?? 100
-                };
-            }
         }
 
         #endregion
 
         #region HitObject
 
-        private class TestHitObject : ConvertHitObject, IHasDuration
+        private class TestHitObject : HitObject, IHasDuration
         {
             public double EndTime => StartTime + Duration;
 
-            public double Duration { get; set; }
+            public double Duration { get; set; } = 100;
+        }
+
+        private class TestPooledHitObject : TestHitObject
+        {
+        }
+
+        private class TestParentHitObject : TestHitObject
+        {
+            public double ChildTimeOffset;
+
+            protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
+            {
+                AddNested(new TestHitObject { StartTime = StartTime + ChildTimeOffset });
+            }
+        }
+
+        private class TestPooledParentHitObject : TestParentHitObject
+        {
+            protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
+            {
+                AddNested(new TestPooledHitObject { StartTime = StartTime + ChildTimeOffset });
+            }
         }
 
         private class DrawableTestHitObject : DrawableHitObject<TestHitObject>
         {
-            public DrawableTestHitObject(TestHitObject hitObject)
+            public DrawableTestHitObject([CanBeNull] TestHitObject hitObject)
                 : base(hitObject)
             {
                 Anchor = Anchor.TopCentre;
@@ -324,6 +434,52 @@ namespace osu.Game.Tests.Visual.Gameplay
                     }
                 });
             }
+
+            protected override void Update() => LifetimeEnd = HitObject.EndTime;
+        }
+
+        private class DrawableTestPooledHitObject : DrawableTestHitObject
+        {
+            public DrawableTestPooledHitObject()
+                : base(null)
+            {
+                InternalChildren[0].Colour = Color4.LightSkyBlue;
+                InternalChildren[1].Colour = Color4.Blue;
+            }
+        }
+
+        private class DrawableTestParentHitObject : DrawableTestHitObject
+        {
+            private readonly Container<DrawableHitObject> container;
+
+            public DrawableTestParentHitObject([CanBeNull] TestHitObject hitObject)
+                : base(hitObject)
+            {
+                InternalChildren[0].Colour = Color4.LightYellow;
+                InternalChildren[1].Colour = Color4.Yellow;
+
+                AddInternal(container = new Container<DrawableHitObject>
+                {
+                    RelativeSizeAxes = Axes.Both,
+                });
+            }
+
+            protected override DrawableHitObject CreateNestedHitObject(HitObject hitObject) =>
+                new DrawableTestHitObject((TestHitObject)hitObject);
+
+            protected override void AddNestedHitObject(DrawableHitObject hitObject) => container.Add(hitObject);
+
+            protected override void ClearNestedHitObjects() => container.Clear(false);
+        }
+
+        private class DrawableTestPooledParentHitObject : DrawableTestParentHitObject
+        {
+            public DrawableTestPooledParentHitObject()
+                : base(null)
+            {
+                InternalChildren[0].Colour = Color4.LightSeaGreen;
+                InternalChildren[1].Colour = Color4.Green;
+            }
         }
 
         #endregion