Merge pull request #10922 from peppy/fix-judgement-ordering

Ensure legacy skin judgements display in front of hitobjects

.config/dotnet-tools.json

@@ -13,6 +13,24 @@
       "commands": [
         "dotnet-format"
       ]
+    },
+    "jetbrains.resharper.globaltools": {
+      "version": "2020.2.4",
+      "commands": [
+        "jb"
+      ]
+    },
+    "nvika": {
+      "version": "2.0.0",
+      "commands": [
+        "nvika"
+      ]
+    },
+    "codefilesanity": {
+      "version": "15.0.0",
+      "commands": [
+        "CodeFileSanity"
+      ]
     }
   }
 }

.gitignore

@@ -334,3 +334,5 @@ inspectcode
 
 # BenchmarkDotNet
 /BenchmarkDotNet.Artifacts
+
+*.GeneratedMSBuildEditorConfig.editorconfig

.idea/.idea.osu.Desktop/.idea/modules.xml

@@ -2,7 +2,7 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/.idea.osu.Desktop/riderModule.iml" filepath="$PROJECT_DIR$/.idea/.idea.osu.Desktop/riderModule.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/.idea.osu.Desktop/.idea/riderModule.iml" filepath="$PROJECT_DIR$/.idea/.idea.osu.Desktop/.idea/riderModule.iml" />
     </modules>
   </component>
 </project>

.vscode/tasks.json

@@ -9,11 +9,10 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Desktop",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -24,12 +23,11 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Desktop",
-                "/p:Configuration=Release",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:Configuration=Release",
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -40,11 +38,10 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Tests",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -55,12 +52,11 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Tests",
-                "/p:Configuration=Release",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:Configuration=Release",
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -71,11 +67,10 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Tournament.Tests",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -86,12 +81,11 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Tournament.Tests",
-                "/p:Configuration=Release",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:Configuration=Release",
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -102,25 +96,14 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Benchmarks",
-                "/p:Configuration=Release",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:Configuration=Release",
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
-        },
-        {
-            "label": "Restore (netcoreapp3.1)",
-            "type": "shell",
-            "command": "dotnet",
-            "args": [
-                "restore",
-                "build/Desktop.proj"
-            ],
-            "problemMatcher": []
         }
     ]
 }

CodeAnalysis/BannedSymbols.txt

@@ -4,5 +4,6 @@ M:System.ValueType.Equals(System.Object)~System.Boolean;Don't use object.Equals(
 M:System.Nullable`1.Equals(System.Object)~System.Boolean;Use == instead.
 T:System.IComparable;Don't use non-generic IComparable. Use generic version instead.
 M:osu.Framework.Graphics.Sprites.SpriteText.#ctor;Use OsuSpriteText.
+M:osu.Framework.Bindables.IBindableList`1.GetBoundCopy();Fails on iOS. Use manual ctor + BindTo instead. (see https://github.com/mono/mono/issues/19900)
 T:Microsoft.EntityFrameworkCore.Internal.EnumerableExtensions;Don't use internal extension methods.
 T:Microsoft.EntityFrameworkCore.Internal.TypeExtensions;Don't use internal extension methods.

Directory.Build.props

@@ -16,9 +16,9 @@
     <EmbeddedResource Include="Resources\**\*.*" />
   </ItemGroup>
   <ItemGroup Label="Code Analysis">
-    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="3.3.1" PrivateAssets="All" />
     <AdditionalFiles Include="$(MSBuildThisFileDirectory)CodeAnalysis\BannedSymbols.txt" />
-    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="3.0.0" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="3.3.1" PrivateAssets="All" />
   </ItemGroup>
   <PropertyGroup Label="Code Analysis">
     <CodeAnalysisRuleSet>$(MSBuildThisFileDirectory)CodeAnalysis\osu.ruleset</CodeAnalysisRuleSet>

README.md

@@ -34,11 +34,19 @@ If you are looking to install or test osu! without setting up a development envi
 | [Windows (x64)](https://github.com/ppy/osu/releases/latest/download/install.exe)  | [macOS 10.12+](https://github.com/ppy/osu/releases/latest/download/osu.app.zip) | [Linux (x64)](https://github.com/ppy/osu/releases/latest/download/osu.AppImage) | [iOS(iOS 10+)](https://osu.ppy.sh/home/testflight) | [Android (5+)](https://github.com/ppy/osu/releases/latest/download/sh.ppy.osulazer.apk)
 | ------------- | ------------- | ------------- | ------------- | ------------- |
 
+- The iOS testflight link may fill up (Apple has a hard limit of 10,000 users). We reset it occasionally when this happens. Please do not ask about this. Check back regularly for link resets or follow [peppy](https://twitter.com/ppy) on twitter for announcements of link resets.
+
 - When running on Windows 7 or 8.1, **[additional prerequisites](https://docs.microsoft.com/en-us/dotnet/core/install/dependencies?tabs=netcore31&pivots=os-windows)** may be required to correctly run .NET Core applications if your operating system is not up-to-date with the latest service packs.
 
 If your platform is not listed above, there is still a chance you can manually build it by following the instructions below.
 
-## Developing or debugging
+## Developing a custom ruleset
+
+osu! is designed to have extensible modular gameplay modes, called "rulesets". Building one of these allows a developer to harness the power of osu! for their own game style. To get started working on a ruleset, we have some templates available [here](https://github.com/ppy/osu-templates).
+
+You can see some examples of custom rulesets by visiting the [custom ruleset directory](https://github.com/ppy/osu/issues/5852).
+
+## Developing osu!
 
 Please make sure you have the following prerequisites:
 
@@ -67,7 +75,6 @@ git pull
 Build configurations for the recommended IDEs (listed above) are included. You should use the provided Build/Run functionality of your IDE to get things going. When testing or building new components, it's highly encouraged you use the `VisualTests` project/configuration. More information on this is provided [below](#contributing).
 
 - Visual Studio / Rider users should load the project via one of the platform-specific `.slnf` files, rather than the main `.sln.` This will allow access to template run configurations.
-- Visual Studio Code users must run the `Restore` task before any build attempt.
 
 You can also build and run *osu!* from the command-line with a single command:
 

build/InspectCode.cake

@@ -1,7 +1,4 @@
 #addin "nuget:?package=CodeFileSanity&version=0.0.36"
-#addin "nuget:?package=JetBrains.ReSharper.CommandLineTools&version=2020.1.3"
-#tool "nuget:?package=NVika.MSBuild&version=1.0.1"
-var nVikaToolPath = GetFiles("./tools/NVika.MSBuild.*/tools/NVika.exe").First();
 
 ///////////////////////////////////////////////////////////////////////////////
 // ARGUMENTS
@@ -18,23 +15,15 @@ var desktopSlnf = rootDirectory.CombineWithFilePath("osu.Desktop.slnf");
 // TASKS
 ///////////////////////////////////////////////////////////////////////////////
 
-// windows only because both inspectcode and nvika depend on net45
 Task("InspectCode")
-    .WithCriteria(IsRunningOnWindows())
     .Does(() => {
-        InspectCode(desktopSlnf, new InspectCodeSettings {
-            CachesHome = "inspectcode",
-            OutputFile = "inspectcodereport.xml",
-            ArgumentCustomization = arg => {
-                if (AppVeyor.IsRunningOnAppVeyor) // Don't flood CI output
-                    arg.Append("--verbosity:WARN");
-                    return arg;
-            },
-        });
+        var inspectcodereport = "inspectcodereport.xml";
+        var cacheDir = "inspectcode";
+        var verbosity = AppVeyor.IsRunningOnAppVeyor ? "WARN" : "INFO"; // Don't flood CI output
 
-        int returnCode = StartProcess(nVikaToolPath, $@"parsereport ""inspectcodereport.xml"" --treatwarningsaserrors");
-        if (returnCode != 0)
-            throw new Exception($"inspectcode failed with return code {returnCode}");
+        DotNetCoreTool(rootDirectory.FullPath,
+            "jb", $@"inspectcode ""{desktopSlnf}"" --output=""{inspectcodereport}"" --caches-home=""{cacheDir}"" --verbosity={verbosity}");
+        DotNetCoreTool(rootDirectory.FullPath, "nvika", $@"parsereport ""{inspectcodereport}"" --treatwarningsaserrors");
     });
 
 Task("CodeFileSanity")

global.json

@@ -5,6 +5,6 @@
     "version": "3.1.100"
   },
   "msbuild-sdks": {
-    "Microsoft.Build.Traversal": "2.1.1"
+    "Microsoft.Build.Traversal": "2.2.3"
   }
 }

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.904.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.910.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.1030.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2020.1120.0" />
   </ItemGroup>
 </Project>

osu.Android/GameplayScreenRotationLocker.cs

@@ -0,0 +1,34 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using Android.Content.PM;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Game;
+
+namespace osu.Android
+{
+    public class GameplayScreenRotationLocker : Component
+    {
+        private Bindable<bool> localUserPlaying;
+
+        [Resolved]
+        private OsuGameActivity gameActivity { get; set; }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuGame game)
+        {
+            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
+            localUserPlaying.BindValueChanged(updateLock, true);
+        }
+
+        private void updateLock(ValueChangedEvent<bool> userPlaying)
+        {
+            gameActivity.RunOnUiThread(() =>
+            {
+                gameActivity.RequestedOrientation = userPlaying.NewValue ? ScreenOrientation.Locked : ScreenOrientation.FullUser;
+            });
+        }
+    }
+}

osu.Android/OsuGameActivity.cs

@@ -9,10 +9,10 @@ using osu.Framework.Android;
 
 namespace osu.Android
 {
-    [Activity(Theme = "@android:style/Theme.NoTitleBar", MainLauncher = true, ScreenOrientation = ScreenOrientation.FullSensor, SupportsPictureInPicture = false, ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize, HardwareAccelerated = false)]
+    [Activity(Theme = "@android:style/Theme.NoTitleBar", MainLauncher = true, ScreenOrientation = ScreenOrientation.FullUser, SupportsPictureInPicture = false, ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize, HardwareAccelerated = false)]
     public class OsuGameActivity : AndroidGameActivity
     {
-        protected override Framework.Game CreateGame() => new OsuGameAndroid();
+        protected override Framework.Game CreateGame() => new OsuGameAndroid(this);
 
         protected override void OnCreate(Bundle savedInstanceState)
         {

osu.Android/OsuGameAndroid.cs

@@ -4,6 +4,7 @@
 using System;
 using Android.App;
 using Android.OS;
+using osu.Framework.Allocation;
 using osu.Game;
 using osu.Game.Updater;
 
@@ -11,6 +12,15 @@ namespace osu.Android
 {
     public class OsuGameAndroid : OsuGame
     {
+        [Cached]
+        private readonly OsuGameActivity gameActivity;
+
+        public OsuGameAndroid(OsuGameActivity activity)
+            : base(null)
+        {
+            gameActivity = activity;
+        }
+
         public override Version AssemblyVersion
         {
             get
@@ -55,6 +65,12 @@ namespace osu.Android
             }
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            LoadComponentAsync(new GameplayScreenRotationLocker(), Add);
+        }
+
         protected override UpdateManager CreateUpdateManager() => new SimpleUpdateManager();
     }
 }

osu.Android/osu.Android.csproj

@@ -21,6 +21,7 @@
     <AndroidLinkTool>r8</AndroidLinkTool>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="GameplayScreenRotationLocker.cs" />
     <Compile Include="OsuGameActivity.cs" />
     <Compile Include="OsuGameAndroid.cs" />
   </ItemGroup>
@@ -53,4 +54,4 @@
     <AndroidResource Include="Resources\drawable\lazer.png" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
-</Project>
+</Project>

osu.Desktop/DiscordRichPresence.cs

@@ -135,6 +135,9 @@ namespace osu.Desktop
 
                 case UserActivity.Editing edit:
                     return edit.Beatmap.ToString();
+
+                case UserActivity.InLobby lobby:
+                    return lobby.Room.Name.Value;
             }
 
             return string.Empty;

osu.Desktop/OsuGameDesktop.cs

@@ -125,19 +125,22 @@ namespace osu.Desktop
         {
             base.SetHost(host);
 
+            var iconStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico");
+
             switch (host.Window)
             {
                 // Legacy osuTK DesktopGameWindow
-                case DesktopGameWindow desktopGameWindow:
+                case OsuTKDesktopWindow desktopGameWindow:
                     desktopGameWindow.CursorState |= CursorState.Hidden;
-                    desktopGameWindow.SetIconFromStream(Assembly.GetExecutingAssembly().GetManifestResourceStream(GetType(), "lazer.ico"));
+                    desktopGameWindow.SetIconFromStream(iconStream);
                     desktopGameWindow.Title = Name;
                     desktopGameWindow.FileDrop += (_, e) => fileDrop(e.FileNames);
                     break;
 
                 // SDL2 DesktopWindow
                 case DesktopWindow desktopWindow:
-                    desktopWindow.CursorState.Value |= CursorState.Hidden;
+                    desktopWindow.CursorState |= CursorState.Hidden;
+                    desktopWindow.SetIconFromStream(iconStream);
                     desktopWindow.Title = Name;
                     desktopWindow.DragDrop += f => fileDrop(new[] { f });
                     break;

osu.Desktop/Updater/SquirrelUpdateManager.cs

@@ -29,6 +29,11 @@ namespace osu.Desktop.Updater
 
         private static readonly Logger logger = Logger.GetLogger("updater");
 
+        /// <summary>
+        /// Whether an update has been downloaded but not yet applied.
+        /// </summary>
+        private bool updatePending;
+
         [BackgroundDependencyLoader]
         private void load(NotificationOverlay notification)
         {
@@ -37,9 +42,9 @@ namespace osu.Desktop.Updater
             Splat.Locator.CurrentMutable.Register(() => new SquirrelLogger(), typeof(Splat.ILogger));
         }
 
-        protected override async Task PerformUpdateCheck() => await checkForUpdateAsync();
+        protected override async Task<bool> PerformUpdateCheck() => await checkForUpdateAsync();
 
-        private async Task checkForUpdateAsync(bool useDeltaPatching = true, UpdateProgressNotification notification = null)
+        private async Task<bool> checkForUpdateAsync(bool useDeltaPatching = true, UpdateProgressNotification notification = null)
         {
             // should we schedule a retry on completion of this check?
             bool scheduleRecheck = true;
@@ -49,9 +54,19 @@ namespace osu.Desktop.Updater
                 updateManager ??= await UpdateManager.GitHubUpdateManager(@"https://github.com/ppy/osu", @"osulazer", null, null, true);
 
                 var info = await updateManager.CheckForUpdate(!useDeltaPatching);
+
                 if (info.ReleasesToApply.Count == 0)
+                {
+                    if (updatePending)
+                    {
+                        // the user may have dismissed the completion notice, so show it again.
+                        notificationOverlay.Post(new UpdateCompleteNotification(this));
+                        return true;
+                    }
+
                     // no updates available. bail and retry later.
-                    return;
+                    return false;
+                }
 
                 if (notification == null)
                 {
@@ -72,6 +87,7 @@ namespace osu.Desktop.Updater
                     await updateManager.ApplyReleases(info, p => notification.Progress = p / 100f);
 
                     notification.State = ProgressNotificationState.Completed;
+                    updatePending = true;
                 }
                 catch (Exception e)
                 {
@@ -103,6 +119,8 @@ namespace osu.Desktop.Updater
                     Scheduler.AddDelayed(async () => await checkForUpdateAsync(), 60000 * 30);
                 }
             }
+
+            return true;
         }
 
         protected override void Dispose(bool isDisposing)
@@ -111,10 +129,27 @@ namespace osu.Desktop.Updater
             updateManager?.Dispose();
         }
 
+        private class UpdateCompleteNotification : ProgressCompletionNotification
+        {
+            [Resolved]
+            private OsuGame game { get; set; }
+
+            public UpdateCompleteNotification(SquirrelUpdateManager updateManager)
+            {
+                Text = @"Update ready to install. Click to restart!";
+
+                Activated = () =>
+                {
+                    updateManager.PrepareUpdateAsync()
+                                 .ContinueWith(_ => updateManager.Schedule(() => game.GracefullyExit()));
+                    return true;
+                };
+            }
+        }
+
         private class UpdateProgressNotification : ProgressNotification
         {
             private readonly SquirrelUpdateManager updateManager;
-            private OsuGame game;
 
             public UpdateProgressNotification(SquirrelUpdateManager updateManager)
             {
@@ -123,23 +158,12 @@ namespace osu.Desktop.Updater
 
             protected override Notification CreateCompletionNotification()
             {
-                return new ProgressCompletionNotification
-                {
-                    Text = @"Update ready to install. Click to restart!",
-                    Activated = () =>
-                    {
-                        updateManager.PrepareUpdateAsync()
-                                     .ContinueWith(_ => updateManager.Schedule(() => game.GracefullyExit()));
-                        return true;
-                    }
-                };
+                return new UpdateCompleteNotification(updateManager);
             }
 
             [BackgroundDependencyLoader]
-            private void load(OsuColour colours, OsuGame game)
+            private void load(OsuColour colours)
             {
-                this.game = game;
-
                 IconContent.AddRange(new Drawable[]
                 {
                     new Box

osu.Desktop/Windows/GameplayWinKeyBlocker.cs

@@ -5,24 +5,24 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
+using osu.Game;
 using osu.Game.Configuration;
 
 namespace osu.Desktop.Windows
 {
     public class GameplayWinKeyBlocker : Component
     {
-        private Bindable<bool> allowScreenSuspension;
         private Bindable<bool> disableWinKey;
+        private Bindable<bool> localUserPlaying;
 
-        private GameHost host;
+        [Resolved]
+        private GameHost host { get; set; }
 
         [BackgroundDependencyLoader]
-        private void load(GameHost host, OsuConfigManager config)
+        private void load(OsuGame game, OsuConfigManager config)
         {
-            this.host = host;
-
-            allowScreenSuspension = host.AllowScreenSuspension.GetBoundCopy();
-            allowScreenSuspension.BindValueChanged(_ => updateBlocking());
+            localUserPlaying = game.LocalUserPlaying.GetBoundCopy();
+            localUserPlaying.BindValueChanged(_ => updateBlocking());
 
             disableWinKey = config.GetBindable<bool>(OsuSetting.GameplayDisableWinKey);
             disableWinKey.BindValueChanged(_ => updateBlocking(), true);
@@ -30,7 +30,7 @@ namespace osu.Desktop.Windows
 
         private void updateBlocking()
         {
-            bool shouldDisable = disableWinKey.Value && !allowScreenSuspension.Value;
+            bool shouldDisable = disableWinKey.Value && localUserPlaying.Value;
 
             if (shouldDisable)
                 host.InputThread.Scheduler.Add(WindowsKey.Disable);

osu.Game.Rulesets.Catch.Tests/.vscode/tasks.json

@@ -9,11 +9,10 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Rulesets.Catch.Tests.csproj",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -24,24 +23,14 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Rulesets.Catch.Tests.csproj",
-                "/p:Configuration=Release",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:Configuration=Release",
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
-        },
-        {
-            "label": "Restore",
-            "type": "shell",
-            "command": "dotnet",
-            "args": [
-                "restore"
-            ],
-            "problemMatcher": []
         }
     ]
 }

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

@@ -12,17 +12,32 @@ namespace osu.Game.Rulesets.Catch.Tests
     [TestFixture]
     public class CatchLegacyModConversionTest : LegacyModConversionTest
     {
-        [TestCase(LegacyMods.Easy, new[] { typeof(CatchModEasy) })]
-        [TestCase(LegacyMods.HardRock | LegacyMods.DoubleTime, new[] { typeof(CatchModHardRock), typeof(CatchModDoubleTime) })]
-        [TestCase(LegacyMods.DoubleTime, new[] { typeof(CatchModDoubleTime) })]
-        [TestCase(LegacyMods.Nightcore, new[] { typeof(CatchModNightcore) })]
+        private static readonly object[][] catch_mod_mapping =
+        {
+            new object[] { LegacyMods.NoFail, new[] { typeof(CatchModNoFail) } },
+            new object[] { LegacyMods.Easy, new[] { typeof(CatchModEasy) } },
+            new object[] { LegacyMods.Hidden, new[] { typeof(CatchModHidden) } },
+            new object[] { LegacyMods.HardRock, new[] { typeof(CatchModHardRock) } },
+            new object[] { LegacyMods.SuddenDeath, new[] { typeof(CatchModSuddenDeath) } },
+            new object[] { LegacyMods.DoubleTime, new[] { typeof(CatchModDoubleTime) } },
+            new object[] { LegacyMods.Relax, new[] { typeof(CatchModRelax) } },
+            new object[] { LegacyMods.HalfTime, new[] { typeof(CatchModHalfTime) } },
+            new object[] { LegacyMods.Nightcore, new[] { typeof(CatchModNightcore) } },
+            new object[] { LegacyMods.Flashlight, new[] { typeof(CatchModFlashlight) } },
+            new object[] { LegacyMods.Autoplay, new[] { typeof(CatchModAutoplay) } },
+            new object[] { LegacyMods.Perfect, new[] { typeof(CatchModPerfect) } },
+            new object[] { LegacyMods.Cinema, new[] { typeof(CatchModCinema) } },
+            new object[] { LegacyMods.HardRock | LegacyMods.DoubleTime, new[] { typeof(CatchModHardRock), typeof(CatchModDoubleTime) } }
+        };
+
+        [TestCaseSource(nameof(catch_mod_mapping))]
+        [TestCase(LegacyMods.Cinema | LegacyMods.Autoplay, new[] { typeof(CatchModCinema) })]
         [TestCase(LegacyMods.Nightcore | LegacyMods.DoubleTime, new[] { typeof(CatchModNightcore) })]
-        [TestCase(LegacyMods.Flashlight | LegacyMods.Nightcore | LegacyMods.DoubleTime, new[] { typeof(CatchModFlashlight), typeof(CatchModNightcore) })]
-        [TestCase(LegacyMods.Perfect, new[] { typeof(CatchModPerfect) })]
-        [TestCase(LegacyMods.SuddenDeath, new[] { typeof(CatchModSuddenDeath) })]
         [TestCase(LegacyMods.Perfect | LegacyMods.SuddenDeath, new[] { typeof(CatchModPerfect) })]
-        [TestCase(LegacyMods.Perfect | LegacyMods.SuddenDeath | LegacyMods.DoubleTime, new[] { typeof(CatchModDoubleTime), typeof(CatchModPerfect) })]
-        public new void Test(LegacyMods legacyMods, Type[] expectedMods) => base.Test(legacyMods, expectedMods);
+        public new void TestFromLegacy(LegacyMods legacyMods, Type[] expectedMods) => base.TestFromLegacy(legacyMods, expectedMods);
+
+        [TestCaseSource(nameof(catch_mod_mapping))]
+        public new void TestToLegacy(LegacyMods legacyMods, Type[] givenMods) => base.TestToLegacy(legacyMods, givenMods);
 
         protected override Ruleset CreateRuleset() => new CatchRuleset();
     }

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

@@ -50,7 +50,7 @@ namespace osu.Game.Rulesets.Catch.Tests.Mods
         public void TestDroplet(bool shouldMiss) => CreateHitObjectTest(new HitObjectTestData(new Droplet { StartTime = 1000 }), shouldMiss);
 
         // We only care about testing misses, hits are tested via JuiceStream
-        [TestCase(false)]
+        [TestCase(true)]
         public void TestTinyDroplet(bool shouldMiss) => CreateHitObjectTest(new HitObjectTestData(new TinyDroplet { StartTime = 1000 }), shouldMiss);
     }
 }

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

@@ -87,7 +87,7 @@ namespace osu.Game.Rulesets.Catch.Tests
                 Schedule(() =>
                 {
                     area.AttemptCatch(fruit);
-                    area.OnResult(drawable, new JudgementResult(fruit, new CatchJudgement()) { Type = miss ? HitResult.Miss : HitResult.Great });
+                    area.OnNewResult(drawable, new JudgementResult(fruit, new CatchJudgement()) { Type = miss ? HitResult.Miss : HitResult.Great });
 
                     drawable.Expire();
                 });

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

@@ -0,0 +1,65 @@
+// 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.Graphics;
+using osu.Framework.Utils;
+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 osuTK;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public class TestSceneComboCounter : CatchSkinnableTestScene
+    {
+        private ScoreProcessor scoreProcessor;
+
+        private Color4 judgedObjectColour = Color4.White;
+
+        [SetUp]
+        public void SetUp() => Schedule(() =>
+        {
+            scoreProcessor = new ScoreProcessor();
+
+            SetContents(() => new CatchComboDisplay
+            {
+                Anchor = Anchor.Centre,
+                Origin = Anchor.Centre,
+                Scale = new Vector2(2.5f),
+            });
+        });
+
+        [Test]
+        public void TestCatchComboCounter()
+        {
+            AddRepeatStep("perform hit", () => performJudgement(HitResult.Great), 20);
+            AddStep("perform miss", () => performJudgement(HitResult.Miss));
+
+            AddStep("randomize judged object colour", () =>
+            {
+                judgedObjectColour = new Color4(
+                    RNG.NextSingle(1f),
+                    RNG.NextSingle(1f),
+                    RNG.NextSingle(1f),
+                    1f
+                );
+            });
+        }
+
+        private void performJudgement(HitResult type, Judgement judgement = null)
+        {
+            var judgedObject = new DrawableFruit(new Fruit()) { AccentColour = { Value = judgedObjectColour } };
+
+            var result = new JudgementResult(judgedObject.HitObject, judgement ?? new Judgement()) { Type = type };
+            scoreProcessor.ApplyResult(result);
+
+            foreach (var counter in CreatedDrawables.Cast<CatchComboDisplay>())
+                counter.OnNewResult(judgedObject, result);
+        }
+    }
+}

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

@@ -18,71 +18,42 @@ namespace osu.Game.Rulesets.Catch.Tests
             base.LoadComplete();
 
             foreach (FruitVisualRepresentation rep in Enum.GetValues(typeof(FruitVisualRepresentation)))
-                AddStep($"show {rep}", () => SetContents(() => createDrawable(rep)));
+                AddStep($"show {rep}", () => SetContents(() => createDrawableFruit(rep)));
 
             AddStep("show droplet", () => SetContents(() => createDrawableDroplet()));
             AddStep("show tiny droplet", () => SetContents(createDrawableTinyDroplet));
 
             foreach (FruitVisualRepresentation rep in Enum.GetValues(typeof(FruitVisualRepresentation)))
-                AddStep($"show hyperdash {rep}", () => SetContents(() => createDrawable(rep, true)));
+                AddStep($"show hyperdash {rep}", () => SetContents(() => createDrawableFruit(rep, true)));
 
             AddStep("show hyperdash droplet", () => SetContents(() => createDrawableDroplet(true)));
         }
 
-        private Drawable createDrawableTinyDroplet()
+        private Drawable createDrawableFruit(FruitVisualRepresentation rep, bool hyperdash = false) =>
+            setProperties(new DrawableFruit(new TestCatchFruit(rep)), hyperdash);
+
+        private Drawable createDrawableDroplet(bool hyperdash = false) => setProperties(new DrawableDroplet(new Droplet()), hyperdash);
+
+        private Drawable createDrawableTinyDroplet() => setProperties(new DrawableTinyDroplet(new TinyDroplet()));
+
+        private DrawableCatchHitObject setProperties(DrawableCatchHitObject d, bool hyperdash = false)
         {
-            var droplet = new TestCatchTinyDroplet
-            {
-                Scale = 1.5f,
-            };
+            var hitObject = d.HitObject;
+            hitObject.StartTime = 1000000000000;
+            hitObject.Scale = 1.5f;
 
-            return new DrawableTinyDroplet(droplet)
-            {
-                Anchor = Anchor.Centre,
-                RelativePositionAxes = Axes.None,
-                Position = Vector2.Zero,
-                Alpha = 1,
-                LifetimeStart = double.NegativeInfinity,
-                LifetimeEnd = double.PositiveInfinity,
-            };
-        }
+            if (hyperdash)
+                hitObject.HyperDashTarget = new Banana();
 
-        private Drawable createDrawableDroplet(bool hyperdash = false)
-        {
-            var droplet = new TestCatchDroplet
+            d.Anchor = Anchor.Centre;
+            d.RelativePositionAxes = Axes.None;
+            d.Position = Vector2.Zero;
+            d.HitObjectApplied += _ =>
             {
-                Scale = 1.5f,
-                HyperDashTarget = hyperdash ? new Banana() : null
-            };
-
-            return new DrawableDroplet(droplet)
-            {
-                Anchor = Anchor.Centre,
-                RelativePositionAxes = Axes.None,
-                Position = Vector2.Zero,
-                Alpha = 1,
-                LifetimeStart = double.NegativeInfinity,
-                LifetimeEnd = double.PositiveInfinity,
-            };
-        }
-
-        private Drawable createDrawable(FruitVisualRepresentation rep, bool hyperdash = false)
-        {
-            Fruit fruit = new TestCatchFruit(rep)
-            {
-                Scale = 1.5f,
-                HyperDashTarget = hyperdash ? new Banana() : null
-            };
-
-            return new DrawableFruit(fruit)
-            {
-                Anchor = Anchor.Centre,
-                RelativePositionAxes = Axes.None,
-                Position = Vector2.Zero,
-                Alpha = 1,
-                LifetimeStart = double.NegativeInfinity,
-                LifetimeEnd = double.PositiveInfinity,
+                d.LifetimeStart = double.NegativeInfinity;
+                d.LifetimeEnd = double.PositiveInfinity;
             };
+            return d;
         }
 
         public class TestCatchFruit : Fruit
@@ -90,26 +61,9 @@ namespace osu.Game.Rulesets.Catch.Tests
             public TestCatchFruit(FruitVisualRepresentation rep)
             {
                 VisualRepresentation = rep;
-                StartTime = 1000000000000;
             }
 
             public override FruitVisualRepresentation VisualRepresentation { get; }
         }
-
-        public class TestCatchDroplet : Droplet
-        {
-            public TestCatchDroplet()
-            {
-                StartTime = 1000000000000;
-            }
-        }
-
-        public class TestCatchTinyDroplet : TinyDroplet
-        {
-            public TestCatchTinyDroplet()
-            {
-                StartTime = 1000000000000;
-            }
-        }
     }
 }

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

@@ -123,7 +123,10 @@ namespace osu.Game.Rulesets.Catch.Tests
                     Origin = Anchor.Centre,
                     Scale = new Vector2(4f),
                 }, skin);
+            });
 
+            AddStep("get trails container", () =>
+            {
                 trails = catcherArea.OfType<CatcherTrailDisplay>().Single();
                 catcherArea.MovableCatcher.SetHyperDashState(2);
             });

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

@@ -5,6 +5,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Objects;
 using osu.Framework.Extensions.IEnumerableExtensions;
@@ -20,7 +21,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
 
         public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
 
-        protected override IEnumerable<CatchHitObject> ConvertHitObject(HitObject obj, IBeatmap beatmap)
+        protected override IEnumerable<CatchHitObject> ConvertHitObject(HitObject obj, IBeatmap beatmap, CancellationToken cancellationToken)
         {
             var positionData = obj as IHasXPosition;
             var comboData = obj as IHasCombo;

osu.Game.Rulesets.Catch/CatchRuleset.cs

@@ -141,11 +141,40 @@ namespace osu.Game.Rulesets.Catch
 
         public override Drawable CreateIcon() => new SpriteIcon { Icon = OsuIcon.RulesetCatch };
 
+        protected override IEnumerable<HitResult> GetValidHitResults()
+        {
+            return new[]
+            {
+                HitResult.Great,
+
+                HitResult.LargeTickHit,
+                HitResult.SmallTickHit,
+                HitResult.LargeBonus,
+            };
+        }
+
+        public override string GetDisplayNameForHitResult(HitResult result)
+        {
+            switch (result)
+            {
+                case HitResult.LargeTickHit:
+                    return "large droplet";
+
+                case HitResult.SmallTickHit:
+                    return "small droplet";
+
+                case HitResult.LargeBonus:
+                    return "banana";
+            }
+
+            return base.GetDisplayNameForHitResult(result);
+        }
+
         public override DifficultyCalculator CreateDifficultyCalculator(WorkingBeatmap beatmap) => new CatchDifficultyCalculator(this, beatmap);
 
         public override ISkin CreateLegacySkinProvider(ISkinSource source, IBeatmap beatmap) => new CatchLegacySkinTransformer(source);
 
-        public override PerformanceCalculator CreatePerformanceCalculator(WorkingBeatmap beatmap, ScoreInfo score) => new CatchPerformanceCalculator(this, beatmap, score);
+        public override PerformanceCalculator CreatePerformanceCalculator(DifficultyAttributes attributes, ScoreInfo score) => new CatchPerformanceCalculator(this, attributes, score);
 
         public int LegacyID => 2;
 

osu.Game.Rulesets.Catch/CatchSkinComponents.cs

@@ -13,6 +13,7 @@ namespace osu.Game.Rulesets.Catch
         Droplet,
         CatcherIdle,
         CatcherFail,
-        CatcherKiai
+        CatcherKiai,
+        CatchComboCounter
     }
 }

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

@@ -5,7 +5,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Extensions;
-using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
@@ -25,8 +24,8 @@ namespace osu.Game.Rulesets.Catch.Difficulty
         private int tinyTicksMissed;
         private int misses;
 
-        public CatchPerformanceCalculator(Ruleset ruleset, WorkingBeatmap beatmap, ScoreInfo score)
-            : base(ruleset, beatmap, score)
+        public CatchPerformanceCalculator(Ruleset ruleset, DifficultyAttributes attributes, ScoreInfo score)
+            : base(ruleset, attributes, score)
         {
         }
 
@@ -34,7 +33,7 @@ namespace osu.Game.Rulesets.Catch.Difficulty
         {
             mods = Score.Mods;
 
-            fruitsHit = Score.Statistics.GetOrDefault(HitResult.Perfect);
+            fruitsHit = Score.Statistics.GetOrDefault(HitResult.Great);
             ticksHit = Score.Statistics.GetOrDefault(HitResult.LargeTickHit);
             tinyTicksHit = Score.Statistics.GetOrDefault(HitResult.SmallTickHit);
             tinyTicksMissed = Score.Statistics.GetOrDefault(HitResult.SmallTickMiss);

osu.Game.Rulesets.Catch/Judgements/CatchBananaJudgement.cs

@@ -8,31 +8,7 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchBananaJudgement : CatchJudgement
     {
-        public override bool AffectsCombo => false;
-
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 1100;
-            }
-        }
-
-        protected override double HealthIncreaseFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return DEFAULT_MAX_HEALTH_INCREASE * 0.75;
-            }
-        }
+        public override HitResult MaxResult => HitResult.LargeBonus;
 
         public override bool ShouldExplodeFor(JudgementResult result) => true;
     }

osu.Game.Rulesets.Catch/Judgements/CatchDropletJudgement.cs

@@ -7,16 +7,6 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchDropletJudgement : CatchJudgement
     {
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 30;
-            }
-        }
+        public override HitResult MaxResult => HitResult.LargeTickHit;
     }
 }

osu.Game.Rulesets.Catch/Judgements/CatchJudgement.cs

@@ -9,19 +9,7 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchJudgement : Judgement
     {
-        public override HitResult MaxResult => HitResult.Perfect;
-
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 300;
-            }
-        }
+        public override HitResult MaxResult => HitResult.Great;
 
         /// <summary>
         /// Whether fruit on the platter should explode or drop.

osu.Game.Rulesets.Catch/Judgements/CatchTinyDropletJudgement.cs

@@ -7,30 +7,6 @@ namespace osu.Game.Rulesets.Catch.Judgements
 {
     public class CatchTinyDropletJudgement : CatchJudgement
     {
-        public override bool AffectsCombo => false;
-
-        protected override int NumericResultFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 10;
-            }
-        }
-
-        protected override double HealthIncreaseFor(HitResult result)
-        {
-            switch (result)
-            {
-                default:
-                    return 0;
-
-                case HitResult.Perfect:
-                    return 0.02;
-            }
-        }
+        public override HitResult MaxResult => HitResult.SmallTickHit;
     }
 }

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

@@ -17,9 +17,11 @@ namespace osu.Game.Rulesets.Catch.Mods
         private const double fade_out_offset_multiplier = 0.6;
         private const double fade_out_duration_multiplier = 0.44;
 
-        protected override void ApplyHiddenState(DrawableHitObject drawable, ArmedState state)
+        protected override void ApplyNormalVisibilityState(DrawableHitObject hitObject, ArmedState state)
         {
-            if (!(drawable is DrawableCatchHitObject catchDrawable))
+            base.ApplyNormalVisibilityState(hitObject, state);
+
+            if (!(hitObject is DrawableCatchHitObject catchDrawable))
                 return;
 
             if (catchDrawable.NestedHitObjects.Any())

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

@@ -6,10 +6,8 @@ using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
-using osu.Game.Rulesets.Objects;
-using osu.Game.Rulesets.Objects.Drawables;
-using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Objects.Drawables;
 using osuTK;
 using osuTK.Graphics;
 
@@ -63,6 +61,8 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
 
     public abstract class DrawableCatchHitObject : DrawableHitObject<CatchHitObject>
     {
+        protected override double InitialLifetimeOffset => HitObject.TimePreempt;
+
         public virtual bool StaysOnPlate => HitObject.CanBePlated;
 
         public float DisplayRadius => DrawSize.X / 2 * Scale.X * HitObject.Scale;
@@ -86,25 +86,20 @@ namespace osu.Game.Rulesets.Catch.Objects.Drawables
             if (CheckPosition == null) return;
 
             if (timeOffset >= 0 && Result != null)
-                ApplyResult(r => r.Type = CheckPosition.Invoke(HitObject) ? HitResult.Perfect : HitResult.Miss);
+                ApplyResult(r => r.Type = CheckPosition.Invoke(HitObject) ? r.Judgement.MaxResult : r.Judgement.MinResult);
         }
 
-        protected override void UpdateStateTransforms(ArmedState state)
+        protected override void UpdateHitStateTransforms(ArmedState state)
         {
-            var endTime = HitObject.GetEndTime();
-
-            using (BeginAbsoluteSequence(endTime, true))
+            switch (state)
             {
-                switch (state)
-                {
-                    case ArmedState.Miss:
-                        this.FadeOut(250).RotateTo(Rotation * 2, 250, Easing.Out);
-                        break;
+                case ArmedState.Miss:
+                    this.FadeOut(250).RotateTo(Rotation * 2, 250, Easing.Out);
+                    break;
 
-                    case ArmedState.Hit:
-                        this.FadeOut();
-                        break;
-                }
+                case ArmedState.Hit:
+                    this.FadeOut();
+                    break;
             }
         }
     }

osu.Game.Rulesets.Catch/Objects/JuiceStream.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.Collections.Generic;
 using System.Linq;
 using System.Threading;
@@ -56,6 +57,7 @@ namespace osu.Game.Rulesets.Catch.Objects
                 Volume = s.Volume
             }).ToList();
 
+            int nodeIndex = 0;
             SliderEventDescriptor? lastEvent = null;
 
             foreach (var e in SliderEventGenerator.Generate(StartTime, SpanDuration, Velocity, TickDistance, Path.Distance, this.SpanCount(), LegacyLastTickOffset, cancellationToken))
@@ -105,7 +107,7 @@ namespace osu.Game.Rulesets.Catch.Objects
                     case SliderEventType.Repeat:
                         AddNested(new Fruit
                         {
-                            Samples = Samples,
+                            Samples = this.GetNodeSamples(nodeIndex++),
                             StartTime = e.Time,
                             X = X + Path.PositionAt(e.PathProgress).X,
                         });
@@ -119,7 +121,7 @@ namespace osu.Game.Rulesets.Catch.Objects
         public double Duration
         {
             get => this.SpanCount() * Path.Distance / Velocity;
-            set => throw new System.NotSupportedException($"Adjust via {nameof(RepeatCount)} instead"); // can be implemented if/when needed.
+            set => throw new NotSupportedException($"Adjust via {nameof(RepeatCount)} instead"); // can be implemented if/when needed.
         }
 
         public double EndTime => StartTime + Duration;

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

@@ -31,6 +31,9 @@ namespace osu.Game.Rulesets.Catch.Replays
 
         public override Replay Generate()
         {
+            if (Beatmap.HitObjects.Count == 0)
+                return Replay;
+
             // todo: add support for HT DT
             const double dash_speed = Catcher.BASE_SPEED;
             const double movement_speed = dash_speed / 2;

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

@@ -52,7 +52,7 @@ namespace osu.Game.Rulesets.Catch.Replays
                 if (Position > lastCatchFrame.Position)
                     lastCatchFrame.Actions.Add(CatchAction.MoveRight);
                 else if (Position < lastCatchFrame.Position)
-                    Actions.Add(CatchAction.MoveLeft);
+                    lastCatchFrame.Actions.Add(CatchAction.MoveLeft);
             }
         }
 

osu.Game.Rulesets.Catch/Scoring/CatchHitWindows.cs

@@ -11,7 +11,7 @@ namespace osu.Game.Rulesets.Catch.Scoring
         {
             switch (result)
             {
-                case HitResult.Perfect:
+                case HitResult.Great:
                 case HitResult.Miss:
                     return true;
             }

osu.Game.Rulesets.Catch/Scoring/CatchScoreProcessor.cs

@@ -7,6 +7,5 @@ namespace osu.Game.Rulesets.Catch.Scoring
 {
     public class CatchScoreProcessor : ScoreProcessor
     {
-        public override HitWindows CreateHitWindows() => new CatchHitWindows();
     }
 }

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

@@ -7,11 +7,17 @@ using osu.Framework.Graphics;
 using osu.Game.Skinning;
 using osuTK;
 using osuTK.Graphics;
+using static osu.Game.Skinning.LegacySkinConfiguration;
 
 namespace osu.Game.Rulesets.Catch.Skinning
 {
     public class CatchLegacySkinTransformer : LegacySkinTransformer
     {
+        /// <summary>
+        /// For simplicity, let's use legacy combo font texture existence as a way to identify legacy skins from default.
+        /// </summary>
+        private bool providesComboCounter => this.HasFont(GetConfig<LegacySetting, string>(LegacySetting.ComboPrefix)?.Value ?? "score");
+
         public CatchLegacySkinTransformer(ISkinSource source)
             : base(source)
         {
@@ -19,6 +25,16 @@ namespace osu.Game.Rulesets.Catch.Skinning
 
         public override Drawable GetDrawableComponent(ISkinComponent component)
         {
+            if (component is HUDSkinComponent hudComponent)
+            {
+                switch (hudComponent.Component)
+                {
+                    case HUDSkinComponents.ComboCounter:
+                        // catch may provide its own combo counter; hide the default.
+                        return providesComboCounter ? Drawable.Empty() : null;
+                }
+            }
+
             if (!(component is CatchSkinComponent catchSkinComponent))
                 return null;
 
@@ -52,6 +68,13 @@ namespace osu.Game.Rulesets.Catch.Skinning
                 case CatchSkinComponents.CatcherKiai:
                     return this.GetAnimation("fruit-catcher-kiai", true, true, true) ??
                            this.GetAnimation("fruit-ryuuta", true, true, true);
+
+                case CatchSkinComponents.CatchComboCounter:
+
+                    if (providesComboCounter)
+                        return new LegacyCatchComboCounter(Source);
+
+                    break;
             }
 
             return null;

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

@@ -0,0 +1,103 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Skinning;
+using osuTK;
+using osuTK.Graphics;
+using static osu.Game.Skinning.LegacySkinConfiguration;
+
+namespace osu.Game.Rulesets.Catch.Skinning
+{
+    /// <summary>
+    /// A combo counter implementation that visually behaves almost similar to stable's osu!catch combo counter.
+    /// </summary>
+    public class LegacyCatchComboCounter : CompositeDrawable, ICatchComboCounter
+    {
+        private readonly LegacyRollingCounter counter;
+
+        private readonly LegacyRollingCounter explosion;
+
+        public LegacyCatchComboCounter(ISkin skin)
+        {
+            var fontName = skin.GetConfig<LegacySetting, string>(LegacySetting.ComboPrefix)?.Value ?? "score";
+            var fontOverlap = skin.GetConfig<LegacySetting, float>(LegacySetting.ComboOverlap)?.Value ?? -2f;
+
+            AutoSizeAxes = Axes.Both;
+
+            Alpha = 0f;
+            Anchor = Anchor.Centre;
+            Origin = Anchor.Centre;
+            Scale = new Vector2(0.8f);
+
+            InternalChildren = new Drawable[]
+            {
+                explosion = new LegacyRollingCounter(skin, fontName, fontOverlap)
+                {
+                    Alpha = 0.65f,
+                    Blending = BlendingParameters.Additive,
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    Scale = new Vector2(1.5f),
+                },
+                counter = new LegacyRollingCounter(skin, fontName, fontOverlap)
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                },
+            };
+        }
+
+        private int lastDisplayedCombo;
+
+        public void UpdateCombo(int combo, Color4? hitObjectColour = null)
+        {
+            if (combo == lastDisplayedCombo)
+                return;
+
+            // There may still be existing transforms to the counter (including value change after 250ms),
+            // finish them immediately before new transforms.
+            counter.SetCountWithoutRolling(lastDisplayedCombo);
+
+            lastDisplayedCombo = combo;
+
+            if (Time.Elapsed < 0)
+            {
+                // needs more work to make rewind somehow look good.
+                // basically we want the previous increment to play... or turning off RemoveCompletedTransforms (not feasible from a performance angle).
+                Hide();
+                return;
+            }
+
+            // Combo fell to zero, roll down and fade out the counter.
+            if (combo == 0)
+            {
+                counter.Current.Value = 0;
+                explosion.Current.Value = 0;
+
+                this.FadeOut(400, Easing.Out);
+            }
+            else
+            {
+                this.FadeInFromZero().Then().Delay(1000).FadeOut(300);
+
+                counter.ScaleTo(1.5f)
+                       .ScaleTo(0.8f, 250, Easing.Out)
+                       .OnComplete(c => c.SetCountWithoutRolling(combo));
+
+                counter.Delay(250)
+                       .ScaleTo(1f)
+                       .ScaleTo(1.1f, 60).Then().ScaleTo(1f, 30);
+
+                explosion.Colour = hitObjectColour ?? Color4.White;
+
+                explosion.SetCountWithoutRolling(combo);
+                explosion.ScaleTo(1.5f)
+                         .ScaleTo(1.9f, 400, Easing.Out)
+                         .FadeOutFromOne(400);
+            }
+        }
+    }
+}

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

@@ -0,0 +1,62 @@
+// 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.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Skinning;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.UI
+{
+    /// <summary>
+    /// Represents a component that displays a skinned <see cref="ICatchComboCounter"/> and handles combo judgement results for updating it accordingly.
+    /// </summary>
+    public class CatchComboDisplay : SkinnableDrawable
+    {
+        private int currentCombo;
+
+        [CanBeNull]
+        public ICatchComboCounter ComboCounter => Drawable as ICatchComboCounter;
+
+        public CatchComboDisplay()
+            : base(new CatchSkinComponent(CatchSkinComponents.CatchComboCounter), _ => Empty())
+        {
+        }
+
+        protected override void SkinChanged(ISkinSource skin, bool allowFallback)
+        {
+            base.SkinChanged(skin, allowFallback);
+            ComboCounter?.UpdateCombo(currentCombo);
+        }
+
+        public void OnNewResult(DrawableCatchHitObject judgedObject, JudgementResult result)
+        {
+            if (!result.Type.AffectsCombo() || !result.HasResult)
+                return;
+
+            if (!result.IsHit)
+            {
+                updateCombo(0, null);
+                return;
+            }
+
+            updateCombo(result.ComboAtJudgement + 1, judgedObject.AccentColour.Value);
+        }
+
+        public void OnRevertResult(DrawableCatchHitObject judgedObject, JudgementResult result)
+        {
+            if (!result.Type.AffectsCombo() || !result.HasResult)
+                return;
+
+            updateCombo(result.ComboAtJudgement, judgedObject.AccentColour.Value);
+        }
+
+        private void updateCombo(int newCombo, Color4? hitObjectColour)
+        {
+            currentCombo = newCombo;
+            ComboCounter?.UpdateCombo(newCombo, hitObjectColour);
+        }
+    }
+}

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

@@ -53,7 +53,7 @@ namespace osu.Game.Rulesets.Catch.UI
                 explodingFruitContainer,
                 CatcherArea.MovableCatcher.CreateProxiedContent(),
                 HitObjectContainer,
-                CatcherArea
+                CatcherArea,
             };
         }
 
@@ -62,6 +62,7 @@ namespace osu.Game.Rulesets.Catch.UI
         public override void Add(DrawableHitObject h)
         {
             h.OnNewResult += onNewResult;
+            h.OnRevertResult += onRevertResult;
 
             base.Add(h);
 
@@ -70,6 +71,9 @@ namespace osu.Game.Rulesets.Catch.UI
         }
 
         private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
-            => CatcherArea.OnResult((DrawableCatchHitObject)judgedObject, result);
+            => CatcherArea.OnNewResult((DrawableCatchHitObject)judgedObject, result);
+
+        private void onRevertResult(DrawableHitObject judgedObject, JudgementResult result)
+            => CatcherArea.OnRevertResult((DrawableCatchHitObject)judgedObject, result);
     }
 }

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

@@ -145,11 +145,19 @@ namespace osu.Game.Rulesets.Catch.UI
                 }
             };
 
-            trailsTarget.Add(trails = new CatcherTrailDisplay(this));
+            trails = new CatcherTrailDisplay(this);
 
             updateCatcher();
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            // don't add in above load as we may potentially modify a parent in an unsafe manner.
+            trailsTarget.Add(trails);
+        }
+
         /// <summary>
         /// Creates proxied content to be displayed beneath hitobjects.
         /// </summary>

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

@@ -11,6 +11,7 @@ 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;
 
@@ -23,6 +24,7 @@ namespace osu.Game.Rulesets.Catch.UI
         public Func<CatchHitObject, DrawableHitObject<CatchHitObject>> CreateDrawableRepresentation;
 
         public readonly Catcher MovableCatcher;
+        private readonly CatchComboDisplay comboDisplay;
 
         public Container ExplodingFruitTarget
         {
@@ -34,12 +36,24 @@ namespace osu.Game.Rulesets.Catch.UI
         public CatcherArea(BeatmapDifficulty difficulty = null)
         {
             Size = new Vector2(CatchPlayfield.WIDTH, CATCHER_SIZE);
-            Child = MovableCatcher = new Catcher(this, difficulty) { X = CatchPlayfield.CENTER_X };
+            Children = new Drawable[]
+            {
+                comboDisplay = new CatchComboDisplay
+                {
+                    RelativeSizeAxes = Axes.None,
+                    AutoSizeAxes = Axes.Both,
+                    Anchor = Anchor.TopLeft,
+                    Origin = Anchor.Centre,
+                    Margin = new MarginPadding { Bottom = 350f },
+                    X = CatchPlayfield.CENTER_X
+                },
+                MovableCatcher = new Catcher(this, difficulty) { X = CatchPlayfield.CENTER_X },
+            };
         }
 
-        public void OnResult(DrawableCatchHitObject fruit, JudgementResult result)
+        public void OnNewResult(DrawableCatchHitObject fruit, JudgementResult result)
         {
-            if (result.Judgement is IgnoreJudgement)
+            if (!result.Type.IsScorable())
                 return;
 
             void runAfterLoaded(Action action)
@@ -86,8 +100,13 @@ namespace osu.Game.Rulesets.Catch.UI
                 else
                     MovableCatcher.Drop();
             }
+
+            comboDisplay.OnNewResult(fruit, result);
         }
 
+        public void OnRevertResult(DrawableCatchHitObject fruit, JudgementResult result)
+            => comboDisplay.OnRevertResult(fruit, result);
+
         public void OnReleased(CatchAction action)
         {
         }
@@ -105,6 +124,8 @@ namespace osu.Game.Rulesets.Catch.UI
 
             if (state?.CatcherX != null)
                 MovableCatcher.X = state.CatcherX.Value;
+
+            comboDisplay.X = MovableCatcher.X;
         }
     }
 }

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

@@ -0,0 +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 osu.Framework.Graphics;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.UI
+{
+    /// <summary>
+    /// An interface providing a set of methods to update the combo counter.
+    /// </summary>
+    public interface ICatchComboCounter : IDrawable
+    {
+        /// <summary>
+        /// Updates the counter to animate a transition from the old combo value it had to the current provided one.
+        /// </summary>
+        /// <remarks>
+        /// This is called regardless of whether the clock is rewinding.
+        /// </remarks>
+        /// <param name="combo">The new combo value.</param>
+        /// <param name="hitObjectColour">The colour of the object if hit, null on miss.</param>
+        void UpdateCombo(int combo, Color4? hitObjectColour = null);
+    }
+}

osu.Game.Rulesets.Mania.Tests/.vscode/tasks.json

@@ -9,11 +9,10 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Rulesets.Mania.Tests.csproj",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
@@ -24,24 +23,14 @@
             "command": "dotnet",
             "args": [
                 "build",
-                "--no-restore",
                 "osu.Game.Rulesets.Mania.Tests.csproj",
-                "/p:Configuration=Release",
-                "/p:GenerateFullPaths=true",
-                "/m",
-                "/verbosity:m"
+                "-p:Configuration=Release",
+                "-p:GenerateFullPaths=true",
+                "-m",
+                "-verbosity:m"
             ],
             "group": "build",
             "problemMatcher": "$msCompile"
-        },
-        {
-            "label": "Restore",
-            "type": "shell",
-            "command": "dotnet",
-            "args": [
-                "restore"
-            ],
-            "problemMatcher": []
         }
     ]
 }

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

@@ -16,7 +16,7 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 using osuTK.Graphics;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public abstract class ManiaPlacementBlueprintTestScene : PlacementBlueprintTestScene
     {

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

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
 using osuTK.Graphics;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public abstract class ManiaSelectionBlueprintTestScene : SelectionBlueprintTestScene
     {

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

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Mania.Configuration;
 using osu.Game.Rulesets.Mania.UI;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     [TestFixture]
     public class TestSceneEditor : EditorTestScene

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

@@ -8,7 +8,7 @@ using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneHoldNotePlacementBlueprint : ManiaPlacementBlueprintTestScene
     {

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

@@ -12,7 +12,7 @@ using osu.Game.Rulesets.Mania.Objects.Drawables;
 using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneHoldNoteSelectionBlueprint : ManiaSelectionBlueprintTestScene
     {

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

@@ -20,7 +20,7 @@ using osu.Game.Screens.Edit;
 using osu.Game.Tests.Visual;
 using osuTK;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneManiaBeatSnapGrid : EditorClockTestScene
     {

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

@@ -23,7 +23,7 @@ using osu.Game.Tests.Visual;
 using osuTK;
 using osuTK.Input;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneManiaHitObjectComposer : EditorClockTestScene
     {

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

@@ -18,7 +18,7 @@ using osu.Game.Tests.Visual;
 using osuTK;
 using osuTK.Input;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneNotePlacementBlueprint : ManiaPlacementBlueprintTestScene
     {

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

@@ -12,7 +12,7 @@ using osu.Game.Rulesets.UI.Scrolling;
 using osu.Game.Tests.Visual;
 using osuTK;
 
-namespace osu.Game.Rulesets.Mania.Tests
+namespace osu.Game.Rulesets.Mania.Tests.Editor
 {
     public class TestSceneNoteSelectionBlueprint : ManiaSelectionBlueprintTestScene
     {

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

@@ -83,11 +83,17 @@ namespace osu.Game.Rulesets.Mania.Tests
             RandomZ = snapshot.RandomZ;
         }
 
+        public override void PostProcess()
+        {
+            base.PostProcess();
+            Objects.Sort();
+        }
+
         public bool Equals(ManiaConvertMapping other) => other != null && RandomW == other.RandomW && RandomX == other.RandomX && RandomY == other.RandomY && RandomZ == other.RandomZ;
         public override bool Equals(ConvertMapping<ConvertValue> other) => base.Equals(other) && Equals(other as ManiaConvertMapping);
     }
 
-    public struct ConvertValue : IEquatable<ConvertValue>
+    public struct ConvertValue : IEquatable<ConvertValue>, IComparable<ConvertValue>
     {
         /// <summary>
         /// A sane value to account for osu!stable using ints everwhere.
@@ -102,5 +108,15 @@ namespace osu.Game.Rulesets.Mania.Tests
             => Precision.AlmostEquals(StartTime, other.StartTime, conversion_lenience)
                && Precision.AlmostEquals(EndTime, other.EndTime, conversion_lenience)
                && Column == other.Column;
+
+        public int CompareTo(ConvertValue other)
+        {
+            var result = StartTime.CompareTo(other.StartTime);
+
+            if (result != 0)
+                return result;
+
+            return Column.CompareTo(other.Column);
+        }
     }
 }

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

@@ -13,7 +13,7 @@ namespace osu.Game.Rulesets.Mania.Tests
     {
         protected override string ResourceAssembly => "osu.Game.Rulesets.Mania";
 
-        [TestCase(2.3683365342338796d, "diffcalc-test")]
+        [TestCase(2.3449735700206298d, "diffcalc-test")]
         public void Test(double expected, string name)
             => base.Test(expected, name);
 

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

@@ -12,19 +12,44 @@ namespace osu.Game.Rulesets.Mania.Tests
     [TestFixture]
     public class ManiaLegacyModConversionTest : LegacyModConversionTest
     {
-        [TestCase(LegacyMods.Easy, new[] { typeof(ManiaModEasy) })]
-        [TestCase(LegacyMods.HardRock | LegacyMods.DoubleTime, new[] { typeof(ManiaModHardRock), typeof(ManiaModDoubleTime) })]
-        [TestCase(LegacyMods.DoubleTime, new[] { typeof(ManiaModDoubleTime) })]
-        [TestCase(LegacyMods.Nightcore, new[] { typeof(ManiaModNightcore) })]
+        private static readonly object[][] mania_mod_mapping =
+        {
+            new object[] { LegacyMods.NoFail, new[] { typeof(ManiaModNoFail) } },
+            new object[] { LegacyMods.Easy, new[] { typeof(ManiaModEasy) } },
+            new object[] { LegacyMods.Hidden, new[] { typeof(ManiaModHidden) } },
+            new object[] { LegacyMods.HardRock, new[] { typeof(ManiaModHardRock) } },
+            new object[] { LegacyMods.SuddenDeath, new[] { typeof(ManiaModSuddenDeath) } },
+            new object[] { LegacyMods.DoubleTime, new[] { typeof(ManiaModDoubleTime) } },
+            new object[] { LegacyMods.HalfTime, new[] { typeof(ManiaModHalfTime) } },
+            new object[] { LegacyMods.Nightcore, new[] { typeof(ManiaModNightcore) } },
+            new object[] { LegacyMods.Flashlight, new[] { typeof(ManiaModFlashlight) } },
+            new object[] { LegacyMods.Autoplay, new[] { typeof(ManiaModAutoplay) } },
+            new object[] { LegacyMods.Perfect, new[] { typeof(ManiaModPerfect) } },
+            new object[] { LegacyMods.Key4, new[] { typeof(ManiaModKey4) } },
+            new object[] { LegacyMods.Key5, new[] { typeof(ManiaModKey5) } },
+            new object[] { LegacyMods.Key6, new[] { typeof(ManiaModKey6) } },
+            new object[] { LegacyMods.Key7, new[] { typeof(ManiaModKey7) } },
+            new object[] { LegacyMods.Key8, new[] { typeof(ManiaModKey8) } },
+            new object[] { LegacyMods.FadeIn, new[] { typeof(ManiaModFadeIn) } },
+            new object[] { LegacyMods.Random, new[] { typeof(ManiaModRandom) } },
+            new object[] { LegacyMods.Cinema, new[] { typeof(ManiaModCinema) } },
+            new object[] { LegacyMods.Key9, new[] { typeof(ManiaModKey9) } },
+            new object[] { LegacyMods.KeyCoop, new[] { typeof(ManiaModDualStages) } },
+            new object[] { LegacyMods.Key1, new[] { typeof(ManiaModKey1) } },
+            new object[] { LegacyMods.Key3, new[] { typeof(ManiaModKey3) } },
+            new object[] { LegacyMods.Key2, new[] { typeof(ManiaModKey2) } },
+            new object[] { LegacyMods.Mirror, new[] { typeof(ManiaModMirror) } },
+            new object[] { LegacyMods.HardRock | LegacyMods.DoubleTime, new[] { typeof(ManiaModHardRock), typeof(ManiaModDoubleTime) } }
+        };
+
+        [TestCaseSource(nameof(mania_mod_mapping))]
+        [TestCase(LegacyMods.Cinema | LegacyMods.Autoplay, new[] { typeof(ManiaModCinema) })]
         [TestCase(LegacyMods.Nightcore | LegacyMods.DoubleTime, new[] { typeof(ManiaModNightcore) })]
-        [TestCase(LegacyMods.Flashlight | LegacyMods.Nightcore | LegacyMods.DoubleTime, new[] { typeof(ManiaModFlashlight), typeof(ManiaModNightcore) })]
-        [TestCase(LegacyMods.Perfect, new[] { typeof(ManiaModPerfect) })]
-        [TestCase(LegacyMods.SuddenDeath, new[] { typeof(ManiaModSuddenDeath) })]
         [TestCase(LegacyMods.Perfect | LegacyMods.SuddenDeath, new[] { typeof(ManiaModPerfect) })]
-        [TestCase(LegacyMods.Perfect | LegacyMods.SuddenDeath | LegacyMods.DoubleTime, new[] { typeof(ManiaModDoubleTime), typeof(ManiaModPerfect) })]
-        [TestCase(LegacyMods.Random | LegacyMods.SuddenDeath, new[] { typeof(ManiaModRandom), typeof(ManiaModSuddenDeath) })]
-        [TestCase(LegacyMods.Flashlight | LegacyMods.Mirror, new[] { typeof(ManiaModFlashlight), typeof(ManiaModMirror) })]
-        public new void Test(LegacyMods legacyMods, Type[] expectedMods) => base.Test(legacyMods, expectedMods);
+        public new void TestFromLegacy(LegacyMods legacyMods, Type[] expectedMods) => base.TestFromLegacy(legacyMods, expectedMods);
+
+        [TestCaseSource(nameof(mania_mod_mapping))]
+        public new void TestToLegacy(LegacyMods legacyMods, Type[] givenMods) => base.TestToLegacy(legacyMods, givenMods);
 
         protected override Ruleset CreateRuleset() => new ManiaRuleset();
     }

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

@@ -1,7 +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.Allocation;
+using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
@@ -15,8 +15,8 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
     /// </summary>
     public abstract class ManiaHitObjectTestScene : ManiaSkinnableTestScene
     {
-        [BackgroundDependencyLoader]
-        private void load()
+        [SetUp]
+        public void SetUp() => Schedule(() =>
         {
             SetContents(() => new FillFlowContainer
             {
@@ -65,7 +65,7 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
                     },
                 }
             });
-        }
+        });
 
         protected abstract DrawableManiaHitObject CreateHitObject();
     }

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

@@ -24,7 +24,10 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
                 if (hitWindows.IsHitResultAllowed(result))
                 {
                     AddStep("Show " + result.GetDescription(), () => SetContents(() =>
-                        new DrawableManiaJudgement(new JudgementResult(new HitObject(), new Judgement()) { Type = result }, null)
+                        new DrawableManiaJudgement(new JudgementResult(new HitObject { StartTime = Time.Current }, new Judgement())
+                        {
+                            Type = result
+                        }, null)
                         {
                             Anchor = Anchor.Centre,
                             Origin = Anchor.Centre,

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

@@ -1,7 +1,9 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Collections.Generic;
 using System.Linq;
+using NUnit.Framework;
 using osu.Framework.Bindables;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
@@ -13,7 +15,8 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
 {
     public class TestSceneHoldNote : ManiaHitObjectTestScene
     {
-        public TestSceneHoldNote()
+        [Test]
+        public void TestHoldNote()
         {
             AddToggleStep("toggle hitting", v =>
             {
@@ -24,6 +27,18 @@ namespace osu.Game.Rulesets.Mania.Tests.Skinning
             });
         }
 
+        [Test]
+        public void TestFadeOnMiss()
+        {
+            AddStep("miss tick", () =>
+            {
+                foreach (var holdNote in holdNotes)
+                    holdNote.ChildrenOfType<DrawableHoldNoteHead>().First().MissForcefully();
+            });
+        }
+
+        private IEnumerable<DrawableHoldNote> holdNotes => CreatedDrawables.SelectMany(d => d.ChildrenOfType<DrawableHoldNote>());
+
         protected override DrawableManiaHitObject CreateHitObject()
         {
             var note = new HoldNote { Duration = 1000 };

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

@@ -45,9 +45,9 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
-            assertNoteJudgement(HitResult.Perfect);
+            assertNoteJudgement(HitResult.IgnoreHit);
         }
 
         /// <summary>
@@ -64,7 +64,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -82,7 +82,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -102,7 +102,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -122,7 +122,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Perfect);
         }
 
@@ -141,7 +141,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -161,7 +161,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -181,7 +181,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Perfect);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Meh);
         }
 
@@ -199,7 +199,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Miss);
         }
 
@@ -217,7 +217,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Perfect);
+            assertTickJudgement(HitResult.LargeTickHit);
             assertTailJudgement(HitResult.Meh);
         }
 
@@ -235,7 +235,7 @@ namespace osu.Game.Rulesets.Mania.Tests
             });
 
             assertHeadJudgement(HitResult.Miss);
-            assertTickJudgement(HitResult.Miss);
+            assertTickJudgement(HitResult.LargeTickMiss);
             assertTailJudgement(HitResult.Meh);
         }
 
@@ -280,10 +280,10 @@ namespace osu.Game.Rulesets.Mania.Tests
             }, beatmap);
 
             AddAssert("first hold note missed", () => judgementResults.Where(j => beatmap.HitObjects[0].NestedHitObjects.Contains(j.HitObject))
-                                                                      .All(j => j.Type == HitResult.Miss));
+                                                                      .All(j => !j.Type.IsHit()));
 
             AddAssert("second hold note missed", () => judgementResults.Where(j => beatmap.HitObjects[1].NestedHitObjects.Contains(j.HitObject))
-                                                                       .All(j => j.Type == HitResult.Perfect));
+                                                                       .All(j => j.Type.IsHit()));
         }
 
         private void assertHeadJudgement(HitResult result)

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

@@ -28,25 +28,33 @@ namespace osu.Game.Rulesets.Mania.Tests
     [TestFixture]
     public class TestSceneNotes : OsuTestScene
     {
-        [BackgroundDependencyLoader]
-        private void load()
+        [Test]
+        public void TestVariousNotes()
         {
-            Child = new FillFlowContainer
+            DrawableNote note1 = null;
+            DrawableNote note2 = null;
+            DrawableHoldNote holdNote1 = null;
+            DrawableHoldNote holdNote2 = null;
+
+            AddStep("create notes", () =>
             {
-                Clock = new FramedClock(new ManualClock()),
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                AutoSizeAxes = Axes.Both,
-                Direction = FillDirection.Horizontal,
-                Spacing = new Vector2(20),
-                Children = new[]
+                Child = new FillFlowContainer
                 {
-                    createNoteDisplay(ScrollingDirection.Down, 1, out var note1),
-                    createNoteDisplay(ScrollingDirection.Up, 2, out var note2),
-                    createHoldNoteDisplay(ScrollingDirection.Down, 1, out var holdNote1),
-                    createHoldNoteDisplay(ScrollingDirection.Up, 2, out var holdNote2),
-                }
-            };
+                    Clock = new FramedClock(new ManualClock()),
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    AutoSizeAxes = Axes.Both,
+                    Direction = FillDirection.Horizontal,
+                    Spacing = new Vector2(20),
+                    Children = new[]
+                    {
+                        createNoteDisplay(ScrollingDirection.Down, 1, out note1),
+                        createNoteDisplay(ScrollingDirection.Up, 2, out note2),
+                        createHoldNoteDisplay(ScrollingDirection.Down, 1, out holdNote1),
+                        createHoldNoteDisplay(ScrollingDirection.Up, 2, out holdNote2),
+                    }
+                };
+            });
 
             AddAssert("note 1 facing downwards", () => verifyAnchors(note1, Anchor.y2));
             AddAssert("note 2 facing upwards", () => verifyAnchors(note2, Anchor.y0));

osu.Game.Rulesets.Mania.Tests/TestSceneOutOfOrderHits.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.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
@@ -35,6 +36,7 @@ namespace osu.Game.Rulesets.Mania.Tests
 
                 objects.Add(new Note { StartTime = time });
 
+                // don't hit the first note
                 if (i > 0)
                 {
                     frames.Add(new ManiaReplayFrame(time + 10, ManiaAction.Key1));
@@ -53,12 +55,77 @@ namespace osu.Game.Rulesets.Mania.Tests
             }
         }
 
+        [Test]
+        public void TestHoldNoteMissAfterNextObjectStartTime()
+        {
+            var objects = new List<ManiaHitObject>
+            {
+                new HoldNote
+                {
+                    StartTime = 1000,
+                    EndTime = 1010,
+                },
+                new HoldNote
+                {
+                    StartTime = 1020,
+                    EndTime = 1030
+                }
+            };
+
+            performTest(objects, new List<ReplayFrame>());
+
+            addJudgementAssert(objects[0], HitResult.IgnoreHit);
+            addJudgementAssert(objects[1], HitResult.IgnoreHit);
+        }
+
+        [Test]
+        public void TestHoldNoteReleasedHitAfterNextObjectStartTime()
+        {
+            var objects = new List<ManiaHitObject>
+            {
+                new HoldNote
+                {
+                    StartTime = 1000,
+                    EndTime = 1010,
+                },
+                new HoldNote
+                {
+                    StartTime = 1020,
+                    EndTime = 1030
+                }
+            };
+
+            var frames = new List<ReplayFrame>
+            {
+                new ManiaReplayFrame(1000, ManiaAction.Key1),
+                new ManiaReplayFrame(1030),
+                new ManiaReplayFrame(1040, ManiaAction.Key1),
+                new ManiaReplayFrame(1050)
+            };
+
+            performTest(objects, frames);
+
+            addJudgementAssert(objects[0], HitResult.IgnoreHit);
+            addJudgementAssert("first head", () => ((HoldNote)objects[0]).Head, HitResult.Perfect);
+            addJudgementAssert("first tail", () => ((HoldNote)objects[0]).Tail, HitResult.Perfect);
+
+            addJudgementAssert(objects[1], HitResult.IgnoreHit);
+            addJudgementAssert("second head", () => ((HoldNote)objects[1]).Head, HitResult.Great);
+            addJudgementAssert("second tail", () => ((HoldNote)objects[1]).Tail, HitResult.Perfect);
+        }
+
         private void addJudgementAssert(ManiaHitObject hitObject, HitResult result)
         {
             AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judgement is {result}",
                 () => judgementResults.Single(r => r.HitObject == hitObject).Type == result);
         }
 
+        private void addJudgementAssert(string name, Func<ManiaHitObject> hitObject, HitResult result)
+        {
+            AddAssert($"{name} judgement is {result}",
+                () => judgementResults.Single(r => r.HitObject == hitObject()).Type == result);
+        }
+
         private void addJudgementOffsetAssert(ManiaHitObject hitObject, double offset)
         {
             AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judged at {offset}",

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

@@ -21,13 +21,20 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         /// </summary>
         public int TotalColumns => Stages.Sum(g => g.Columns);
 
+        /// <summary>
+        /// The total number of columns that were present in this <see cref="ManiaBeatmap"/> before any user adjustments.
+        /// </summary>
+        public readonly int OriginalTotalColumns;
+
         /// <summary>
         /// Creates a new <see cref="ManiaBeatmap"/>.
         /// </summary>
         /// <param name="defaultStage">The initial stages.</param>
-        public ManiaBeatmap(StageDefinition defaultStage)
+        /// <param name="originalTotalColumns">The total number of columns present before any user adjustments. Defaults to the total columns in <paramref name="defaultStage"/>.</param>
+        public ManiaBeatmap(StageDefinition defaultStage, int? originalTotalColumns = null)
         {
             Stages.Add(defaultStage);
+            OriginalTotalColumns = originalTotalColumns ?? defaultStage.Columns;
         }
 
         public override IEnumerable<BeatmapStatistic> GetStatistics()

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

@@ -5,6 +5,7 @@ using osu.Game.Rulesets.Mania.Objects;
 using System;
 using System.Linq;
 using System.Collections.Generic;
+using System.Threading;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Objects;
@@ -27,6 +28,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
         public bool Dual;
         public readonly bool IsForCurrentRuleset;
 
+        private readonly int originalTargetColumns;
+
         // Internal for testing purposes
         internal FastRandom Random { get; private set; }
 
@@ -64,23 +67,25 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 else
                     TargetColumns = Math.Max(4, Math.Min((int)roundedOverallDifficulty + 1, 7));
             }
+
+            originalTargetColumns = TargetColumns;
         }
 
         public override bool CanConvert() => Beatmap.HitObjects.All(h => h is IHasXPosition);
 
-        protected override Beatmap<ManiaHitObject> ConvertBeatmap(IBeatmap original)
+        protected override Beatmap<ManiaHitObject> ConvertBeatmap(IBeatmap original, CancellationToken cancellationToken)
         {
             BeatmapDifficulty difficulty = original.BeatmapInfo.BaseDifficulty;
 
             int seed = (int)MathF.Round(difficulty.DrainRate + difficulty.CircleSize) * 20 + (int)(difficulty.OverallDifficulty * 41.2) + (int)MathF.Round(difficulty.ApproachRate);
             Random = new FastRandom(seed);
 
-            return base.ConvertBeatmap(original);
+            return base.ConvertBeatmap(original, cancellationToken);
         }
 
         protected override Beatmap<ManiaHitObject> CreateBeatmap()
         {
-            beatmap = new ManiaBeatmap(new StageDefinition { Columns = TargetColumns });
+            beatmap = new ManiaBeatmap(new StageDefinition { Columns = TargetColumns }, originalTargetColumns);
 
             if (Dual)
                 beatmap.Stages.Add(new StageDefinition { Columns = TargetColumns });
@@ -88,7 +93,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
             return beatmap;
         }
 
-        protected override IEnumerable<ManiaHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap)
+        protected override IEnumerable<ManiaHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap, CancellationToken cancellationToken)
         {
             if (original is ManiaHitObject maniaOriginal)
             {
@@ -115,7 +120,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 prevNoteTimes.RemoveAt(0);
             prevNoteTimes.Add(newNoteTime);
 
-            density = (prevNoteTimes[^1] - prevNoteTimes[0]) / prevNoteTimes.Count;
+            if (prevNoteTimes.Count >= 2)
+                density = (prevNoteTimes[^1] - prevNoteTimes[0]) / prevNoteTimes.Count;
         }
 
         private double lastTime;
@@ -179,7 +185,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
 
                 case IHasDuration endTimeData:
                 {
-                    conversion = new EndTimeObjectPatternGenerator(Random, original, beatmap, originalBeatmap);
+                    conversion = new EndTimeObjectPatternGenerator(Random, original, beatmap, lastPattern, originalBeatmap);
 
                     recordNote(endTimeData.EndTime, new Vector2(256, 192));
                     computeDensity(endTimeData.EndTime);

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

@@ -3,8 +3,8 @@
 
 using System;
 using System.Collections.Generic;
+using System.Diagnostics;
 using System.Linq;
-using osu.Framework.Utils;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.MathUtils;
@@ -12,6 +12,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Beatmaps.Formats;
 
 namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 {
@@ -25,8 +26,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         private const float osu_base_scoring_distance = 100;
 
-        public readonly double EndTime;
-        public readonly double SegmentDuration;
+        public readonly int StartTime;
+        public readonly int EndTime;
+        public readonly int SegmentDuration;
         public readonly int SpanCount;
 
         private PatternType convertType;
@@ -41,20 +43,26 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             var distanceData = hitObject as IHasDistance;
             var repeatsData = hitObject as IHasRepeats;
 
-            SpanCount = repeatsData?.SpanCount() ?? 1;
+            Debug.Assert(distanceData != null);
 
             TimingControlPoint timingPoint = beatmap.ControlPointInfo.TimingPointAt(hitObject.StartTime);
             DifficultyControlPoint difficultyPoint = beatmap.ControlPointInfo.DifficultyPointAt(hitObject.StartTime);
 
-            // The true distance, accounting for any repeats
-            double distance = (distanceData?.Distance ?? 0) * SpanCount;
-            // The velocity of the osu! hit object - calculated as the velocity of a slider
-            double osuVelocity = osu_base_scoring_distance * beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier / timingPoint.BeatLength;
-            // The duration of the osu! hit object
-            double osuDuration = distance / osuVelocity;
+            double beatLength;
+#pragma warning disable 618
+            if (difficultyPoint is LegacyBeatmapDecoder.LegacyDifficultyControlPoint legacyDifficultyPoint)
+#pragma warning restore 618
+                beatLength = timingPoint.BeatLength * legacyDifficultyPoint.BpmMultiplier;
+            else
+                beatLength = timingPoint.BeatLength / difficultyPoint.SpeedMultiplier;
 
-            EndTime = hitObject.StartTime + osuDuration;
-            SegmentDuration = (EndTime - HitObject.StartTime) / SpanCount;
+            SpanCount = repeatsData?.SpanCount() ?? 1;
+            StartTime = (int)Math.Round(hitObject.StartTime);
+
+            // This matches stable's calculation.
+            EndTime = (int)Math.Floor(StartTime + distanceData.Distance * beatLength * SpanCount * 0.01 / beatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier);
+
+            SegmentDuration = (EndTime - StartTime) / SpanCount;
         }
 
         public override IEnumerable<Pattern> Generate()
@@ -76,7 +84,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             foreach (var obj in originalPattern.HitObjects)
             {
-                if (!Precision.AlmostEquals(EndTime, obj.GetEndTime()))
+                if (EndTime != (int)Math.Round(obj.GetEndTime()))
                     intermediatePattern.Add(obj);
                 else
                     endTimePattern.Add(obj);
@@ -91,35 +99,35 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             if (TotalColumns == 1)
             {
                 var pattern = new Pattern();
-                addToPattern(pattern, 0, HitObject.StartTime, EndTime);
+                addToPattern(pattern, 0, StartTime, EndTime);
                 return pattern;
             }
 
             if (SpanCount > 1)
             {
                 if (SegmentDuration <= 90)
-                    return generateRandomHoldNotes(HitObject.StartTime, 1);
+                    return generateRandomHoldNotes(StartTime, 1);
 
                 if (SegmentDuration <= 120)
                 {
                     convertType |= PatternType.ForceNotStack;
-                    return generateRandomNotes(HitObject.StartTime, SpanCount + 1);
+                    return generateRandomNotes(StartTime, SpanCount + 1);
                 }
 
                 if (SegmentDuration <= 160)
-                    return generateStair(HitObject.StartTime);
+                    return generateStair(StartTime);
 
                 if (SegmentDuration <= 200 && ConversionDifficulty > 3)
-                    return generateRandomMultipleNotes(HitObject.StartTime);
+                    return generateRandomMultipleNotes(StartTime);
 
-                double duration = EndTime - HitObject.StartTime;
+                double duration = EndTime - StartTime;
                 if (duration >= 4000)
-                    return generateNRandomNotes(HitObject.StartTime, 0.23, 0, 0);
+                    return generateNRandomNotes(StartTime, 0.23, 0, 0);
 
                 if (SegmentDuration > 400 && SpanCount < TotalColumns - 1 - RandomStart)
-                    return generateTiledHoldNotes(HitObject.StartTime);
+                    return generateTiledHoldNotes(StartTime);
 
-                return generateHoldAndNormalNotes(HitObject.StartTime);
+                return generateHoldAndNormalNotes(StartTime);
             }
 
             if (SegmentDuration <= 110)
@@ -128,37 +136,37 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     convertType |= PatternType.ForceNotStack;
                 else
                     convertType &= ~PatternType.ForceNotStack;
-                return generateRandomNotes(HitObject.StartTime, SegmentDuration < 80 ? 1 : 2);
+                return generateRandomNotes(StartTime, SegmentDuration < 80 ? 1 : 2);
             }
 
             if (ConversionDifficulty > 6.5)
             {
                 if (convertType.HasFlag(PatternType.LowProbability))
-                    return generateNRandomNotes(HitObject.StartTime, 0.78, 0.3, 0);
+                    return generateNRandomNotes(StartTime, 0.78, 0.3, 0);
 
-                return generateNRandomNotes(HitObject.StartTime, 0.85, 0.36, 0.03);
+                return generateNRandomNotes(StartTime, 0.85, 0.36, 0.03);
             }
 
             if (ConversionDifficulty > 4)
             {
                 if (convertType.HasFlag(PatternType.LowProbability))
-                    return generateNRandomNotes(HitObject.StartTime, 0.43, 0.08, 0);
+                    return generateNRandomNotes(StartTime, 0.43, 0.08, 0);
 
-                return generateNRandomNotes(HitObject.StartTime, 0.56, 0.18, 0);
+                return generateNRandomNotes(StartTime, 0.56, 0.18, 0);
             }
 
             if (ConversionDifficulty > 2.5)
             {
                 if (convertType.HasFlag(PatternType.LowProbability))
-                    return generateNRandomNotes(HitObject.StartTime, 0.3, 0, 0);
+                    return generateNRandomNotes(StartTime, 0.3, 0, 0);
 
-                return generateNRandomNotes(HitObject.StartTime, 0.37, 0.08, 0);
+                return generateNRandomNotes(StartTime, 0.37, 0.08, 0);
             }
 
             if (convertType.HasFlag(PatternType.LowProbability))
-                return generateNRandomNotes(HitObject.StartTime, 0.17, 0, 0);
+                return generateNRandomNotes(StartTime, 0.17, 0, 0);
 
-            return generateNRandomNotes(HitObject.StartTime, 0.27, 0, 0);
+            return generateNRandomNotes(StartTime, 0.27, 0, 0);
         }
 
         /// <summary>
@@ -167,7 +175,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="startTime">Start time of each hold note.</param>
         /// <param name="noteCount">Number of hold notes.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateRandomHoldNotes(double startTime, int noteCount)
+        private Pattern generateRandomHoldNotes(int startTime, int noteCount)
         {
             // - - - -
             // ■ - ■ ■
@@ -202,7 +210,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="startTime">The start time.</param>
         /// <param name="noteCount">The number of notes.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateRandomNotes(double startTime, int noteCount)
+        private Pattern generateRandomNotes(int startTime, int noteCount)
         {
             // - - - -
             // x - - -
@@ -234,7 +242,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The start time.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateStair(double startTime)
+        private Pattern generateStair(int startTime)
         {
             // - - - -
             // x - - -
@@ -286,7 +294,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The start time.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateRandomMultipleNotes(double startTime)
+        private Pattern generateRandomMultipleNotes(int startTime)
         {
             // - - - -
             // x - - -
@@ -329,7 +337,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="p3">The probability required for 3 hold notes to be generated.</param>
         /// <param name="p4">The probability required for 4 hold notes to be generated.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateNRandomNotes(double startTime, double p2, double p3, double p4)
+        private Pattern generateNRandomNotes(int startTime, double p2, double p3, double p4)
         {
             // - - - -
             // ■ - ■ ■
@@ -366,7 +374,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             static bool isDoubleSample(HitSampleInfo sample) => sample.Name == HitSampleInfo.HIT_CLAP || sample.Name == HitSampleInfo.HIT_FINISH;
 
             bool canGenerateTwoNotes = !convertType.HasFlag(PatternType.LowProbability);
-            canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(HitObject.StartTime).Any(isDoubleSample);
+            canGenerateTwoNotes &= HitObject.Samples.Any(isDoubleSample) || sampleInfoListAt(StartTime).Any(isDoubleSample);
 
             if (canGenerateTwoNotes)
                 p2 = 1;
@@ -379,7 +387,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The first hold note start time.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateTiledHoldNotes(double startTime)
+        private Pattern generateTiledHoldNotes(int startTime)
         {
             // - - - -
             // ■ ■ ■ ■
@@ -394,6 +402,9 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             int columnRepeat = Math.Min(SpanCount, TotalColumns);
 
+            // Due to integer rounding, this is not guaranteed to be the same as EndTime (the class-level variable).
+            int endTime = startTime + SegmentDuration * SpanCount;
+
             int nextColumn = GetColumn((HitObject as IHasXPosition)?.X ?? 0, true);
             if (convertType.HasFlag(PatternType.ForceNotStack) && PreviousPattern.ColumnWithObjects < TotalColumns)
                 nextColumn = FindAvailableColumn(nextColumn, PreviousPattern);
@@ -401,7 +412,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
             for (int i = 0; i < columnRepeat; i++)
             {
                 nextColumn = FindAvailableColumn(nextColumn, pattern);
-                addToPattern(pattern, nextColumn, startTime, EndTime);
+                addToPattern(pattern, nextColumn, startTime, endTime);
                 startTime += SegmentDuration;
             }
 
@@ -413,7 +424,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="startTime">The start time of notes.</param>
         /// <returns>The <see cref="Pattern"/> containing the hit objects.</returns>
-        private Pattern generateHoldAndNormalNotes(double startTime)
+        private Pattern generateHoldAndNormalNotes(int startTime)
         {
             // - - - -
             // ■ x x -
@@ -448,7 +459,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
             for (int i = 0; i <= SpanCount; i++)
             {
-                if (!(ignoreHead && startTime == HitObject.StartTime))
+                if (!(ignoreHead && startTime == StartTime))
                 {
                     for (int j = 0; j < noteCount; j++)
                     {
@@ -471,19 +482,18 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// </summary>
         /// <param name="time">The time to retrieve the sample info list from.</param>
         /// <returns></returns>
-        private IList<HitSampleInfo> sampleInfoListAt(double time) => nodeSamplesAt(time)?.First() ?? HitObject.Samples;
+        private IList<HitSampleInfo> sampleInfoListAt(int time) => nodeSamplesAt(time)?.First() ?? HitObject.Samples;
 
         /// <summary>
         /// Retrieves the list of node samples that occur at time greater than or equal to <paramref name="time"/>.
         /// </summary>
         /// <param name="time">The time to retrieve node samples at.</param>
-        private List<IList<HitSampleInfo>> nodeSamplesAt(double time)
+        private List<IList<HitSampleInfo>> nodeSamplesAt(int time)
         {
             if (!(HitObject is IHasPathWithRepeats curveData))
                 return null;
 
-            // mathematically speaking this should be a whole number always, but floating-point arithmetic is not so kind
-            var index = (int)Math.Round(SegmentDuration == 0 ? 0 : (time - HitObject.StartTime) / SegmentDuration, MidpointRounding.AwayFromZero);
+            var index = SegmentDuration == 0 ? 0 : (time - StartTime) / SegmentDuration;
 
             // avoid slicing the list & creating copies, if at all possible.
             return index == 0 ? curveData.NodeSamples : curveData.NodeSamples.Skip(index).ToList();
@@ -496,7 +506,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
         /// <param name="column">The column to add the note to.</param>
         /// <param name="startTime">The start time of the note.</param>
         /// <param name="endTime">The end time of the note (set to <paramref name="startTime"/> for a non-hold note).</param>
-        private void addToPattern(Pattern pattern, int column, double startTime, double endTime)
+        private void addToPattern(Pattern pattern, int column, int startTime, int endTime)
         {
             ManiaHitObject newObject;
 

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

@@ -14,12 +14,17 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 {
     internal class EndTimeObjectPatternGenerator : PatternGenerator
     {
-        private readonly double endTime;
+        private readonly int endTime;
+        private readonly PatternType convertType;
 
-        public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, IBeatmap originalBeatmap)
-            : base(random, hitObject, beatmap, new Pattern(), originalBeatmap)
+        public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, Pattern previousPattern, IBeatmap originalBeatmap)
+            : base(random, hitObject, beatmap, previousPattern, originalBeatmap)
         {
-            endTime = (HitObject as IHasDuration)?.EndTime ?? 0;
+            endTime = (int)((HitObject as IHasDuration)?.EndTime ?? 0);
+
+            convertType = PreviousPattern.ColumnWithObjects == TotalColumns
+                ? PatternType.None
+                : PatternType.ForceNotStack;
         }
 
         public override IEnumerable<Pattern> Generate()
@@ -40,18 +45,25 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                     break;
 
                 case 8:
-                    addToPattern(pattern, FindAvailableColumn(GetRandomColumn(), PreviousPattern), generateHold);
+                    addToPattern(pattern, getRandomColumn(), generateHold);
                     break;
 
                 default:
-                    if (TotalColumns > 0)
-                        addToPattern(pattern, GetRandomColumn(), generateHold);
+                    addToPattern(pattern, getRandomColumn(0), generateHold);
                     break;
             }
 
             return pattern;
         }
 
+        private int getRandomColumn(int? lowerBound = null)
+        {
+            if ((convertType & PatternType.ForceNotStack) > 0)
+                return FindAvailableColumn(GetRandomColumn(lowerBound), lowerBound, patterns: PreviousPattern);
+
+            return FindAvailableColumn(GetRandomColumn(lowerBound), lowerBound);
+        }
+
         /// <summary>
         /// Constructs and adds a note to a pattern.
         /// </summary>

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

@@ -397,7 +397,11 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 case 4:
                     centreProbability = 0;
-                    p2 = Math.Min(p2 * 2, 0.2);
+
+                    // Stable requires rngValue > x, which is an inverse-probability. Lazer uses true probability (1 - x).
+                    // But multiplying this value by 2 (stable) is not the same operation as dividing it by 2 (lazer),
+                    // so it needs to be converted to from a probability and then back after the multiplication.
+                    p2 = 1 - Math.Max((1 - p2) * 2, 0.8);
                     p3 = 0;
                     break;
 
@@ -408,11 +412,20 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
 
                 case 6:
                     centreProbability = 0;
-                    p2 = Math.Min(p2 * 2, 0.5);
-                    p3 = Math.Min(p3 * 2, 0.15);
+
+                    // Stable requires rngValue > x, which is an inverse-probability. Lazer uses true probability (1 - x).
+                    // But multiplying this value by 2 (stable) is not the same operation as dividing it by 2 (lazer),
+                    // so it needs to be converted to from a probability and then back after the multiplication.
+                    p2 = 1 - Math.Max((1 - p2) * 2, 0.5);
+                    p3 = 1 - Math.Max((1 - p3) * 2, 0.85);
                     break;
             }
 
+            // The stable values were allowed to exceed 1, which indicate <0% probability.
+            // These values needs to be clamped otherwise GetRandomNoteCount() will throw an exception.
+            p2 = Math.Clamp(p2, 0, 1);
+            p3 = Math.Clamp(p3, 0, 1);
+
             double centreVal = Random.NextDouble();
             int noteCount = GetRandomNoteCount(p2, p3);
 

osu.Game.Rulesets.Mania/Configuration/ManiaRulesetConfigManager.cs

@@ -20,7 +20,7 @@ namespace osu.Game.Rulesets.Mania.Configuration
         {
             base.InitialiseDefaults();
 
-            Set(ManiaRulesetSetting.ScrollTime, 1500.0, DrawableManiaRuleset.MIN_TIME_RANGE, DrawableManiaRuleset.MAX_TIME_RANGE, 1);
+            Set(ManiaRulesetSetting.ScrollTime, 1500.0, DrawableManiaRuleset.MIN_TIME_RANGE, DrawableManiaRuleset.MAX_TIME_RANGE, 5);
             Set(ManiaRulesetSetting.ScrollDirection, ManiaScrollingDirection.Down);
         }
 

osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyAttributes.cs

@@ -8,5 +8,6 @@ namespace osu.Game.Rulesets.Mania.Difficulty
     public class ManiaDifficultyAttributes : DifficultyAttributes
     {
         public double GreatHitWindow;
+        public double ScoreMultiplier;
     }
 }

osu.Game.Rulesets.Mania/Difficulty/ManiaDifficultyCalculator.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.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps;
@@ -10,10 +11,12 @@ using osu.Game.Rulesets.Difficulty.Skills;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Mania.Difficulty.Skills;
+using osu.Game.Rulesets.Mania.MathUtils;
 using osu.Game.Rulesets.Mania.Mods;
 using osu.Game.Rulesets.Mania.Objects;
 using osu.Game.Rulesets.Mania.Scoring;
 using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Mania.Difficulty
@@ -23,11 +26,13 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         private const double star_scaling_factor = 0.018;
 
         private readonly bool isForCurrentRuleset;
+        private readonly double originalOverallDifficulty;
 
         public ManiaDifficultyCalculator(Ruleset ruleset, WorkingBeatmap beatmap)
             : base(ruleset, beatmap)
         {
             isForCurrentRuleset = beatmap.BeatmapInfo.Ruleset.Equals(ruleset.RulesetInfo);
+            originalOverallDifficulty = beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty;
         }
 
         protected override DifficultyAttributes CreateDifficultyAttributes(IBeatmap beatmap, Mod[] mods, Skill[] skills, double clockRate)
@@ -40,64 +45,33 @@ namespace osu.Game.Rulesets.Mania.Difficulty
 
             return new ManiaDifficultyAttributes
             {
-                StarRating = difficultyValue(skills) * star_scaling_factor,
+                StarRating = skills[0].DifficultyValue() * star_scaling_factor,
                 Mods = mods,
                 // Todo: This int cast is temporary to achieve 1:1 results with osu!stable, and should be removed in the future
-                GreatHitWindow = (int)(hitWindows.WindowFor(HitResult.Great)) / clockRate,
+                GreatHitWindow = (int)Math.Ceiling(getHitWindow300(mods) / clockRate),
+                ScoreMultiplier = getScoreMultiplier(beatmap, mods),
                 MaxCombo = beatmap.HitObjects.Sum(h => h is HoldNote ? 2 : 1),
                 Skills = skills
             };
         }
 
-        private double difficultyValue(Skill[] skills)
-        {
-            // Preprocess the strains to find the maximum overall + individual (aggregate) strain from each section
-            var overall = skills.OfType<Overall>().Single();
-            var aggregatePeaks = new List<double>(Enumerable.Repeat(0.0, overall.StrainPeaks.Count));
-
-            foreach (var individual in skills.OfType<Individual>())
-            {
-                for (int i = 0; i < individual.StrainPeaks.Count; i++)
-                {
-                    double aggregate = individual.StrainPeaks[i] + overall.StrainPeaks[i];
-
-                    if (aggregate > aggregatePeaks[i])
-                        aggregatePeaks[i] = aggregate;
-                }
-            }
-
-            aggregatePeaks.Sort((a, b) => b.CompareTo(a)); // Sort from highest to lowest strain.
-
-            double difficulty = 0;
-            double weight = 1;
-
-            // Difficulty is the weighted sum of the highest strains from every section.
-            foreach (double strain in aggregatePeaks)
-            {
-                difficulty += strain * weight;
-                weight *= 0.9;
-            }
-
-            return difficulty;
-        }
-
         protected override IEnumerable<DifficultyHitObject> CreateDifficultyHitObjects(IBeatmap beatmap, double clockRate)
         {
-            for (int i = 1; i < beatmap.HitObjects.Count; i++)
-                yield return new ManiaDifficultyHitObject(beatmap.HitObjects[i], beatmap.HitObjects[i - 1], clockRate);
+            var sortedObjects = beatmap.HitObjects.ToArray();
+
+            LegacySortHelper<HitObject>.Sort(sortedObjects, Comparer<HitObject>.Create((a, b) => (int)Math.Round(a.StartTime) - (int)Math.Round(b.StartTime)));
+
+            for (int i = 1; i < sortedObjects.Length; i++)
+                yield return new ManiaDifficultyHitObject(sortedObjects[i], sortedObjects[i - 1], clockRate);
         }
 
-        protected override Skill[] CreateSkills(IBeatmap beatmap)
+        // Sorting is done in CreateDifficultyHitObjects, since the full list of hitobjects is required.
+        protected override IEnumerable<DifficultyHitObject> SortObjects(IEnumerable<DifficultyHitObject> input) => input;
+
+        protected override Skill[] CreateSkills(IBeatmap beatmap) => new Skill[]
         {
-            int columnCount = ((ManiaBeatmap)beatmap).TotalColumns;
-
-            var skills = new List<Skill> { new Overall(columnCount) };
-
-            for (int i = 0; i < columnCount; i++)
-                skills.Add(new Individual(i, columnCount));
-
-            return skills.ToArray();
-        }
+            new Strain(((ManiaBeatmap)beatmap).TotalColumns)
+        };
 
         protected override Mod[] DifficultyAdjustmentMods
         {
@@ -122,12 +96,73 @@ namespace osu.Game.Rulesets.Mania.Difficulty
                     new ManiaModKey3(),
                     new ManiaModKey4(),
                     new ManiaModKey5(),
+                    new MultiMod(new ManiaModKey5(), new ManiaModDualStages()),
                     new ManiaModKey6(),
+                    new MultiMod(new ManiaModKey6(), new ManiaModDualStages()),
                     new ManiaModKey7(),
+                    new MultiMod(new ManiaModKey7(), new ManiaModDualStages()),
                     new ManiaModKey8(),
+                    new MultiMod(new ManiaModKey8(), new ManiaModDualStages()),
                     new ManiaModKey9(),
+                    new MultiMod(new ManiaModKey9(), new ManiaModDualStages()),
                 }).ToArray();
             }
         }
+
+        private int getHitWindow300(Mod[] mods)
+        {
+            if (isForCurrentRuleset)
+            {
+                double od = Math.Min(10.0, Math.Max(0, 10.0 - originalOverallDifficulty));
+                return applyModAdjustments(34 + 3 * od, mods);
+            }
+
+            if (Math.Round(originalOverallDifficulty) > 4)
+                return applyModAdjustments(34, mods);
+
+            return applyModAdjustments(47, mods);
+
+            static int applyModAdjustments(double value, Mod[] mods)
+            {
+                if (mods.Any(m => m is ManiaModHardRock))
+                    value /= 1.4;
+                else if (mods.Any(m => m is ManiaModEasy))
+                    value *= 1.4;
+
+                if (mods.Any(m => m is ManiaModDoubleTime))
+                    value *= 1.5;
+                else if (mods.Any(m => m is ManiaModHalfTime))
+                    value *= 0.75;
+
+                return (int)value;
+            }
+        }
+
+        private double getScoreMultiplier(IBeatmap beatmap, Mod[] mods)
+        {
+            double scoreMultiplier = 1;
+
+            foreach (var m in mods)
+            {
+                switch (m)
+                {
+                    case ManiaModNoFail _:
+                    case ManiaModEasy _:
+                    case ManiaModHalfTime _:
+                        scoreMultiplier *= 0.5;
+                        break;
+                }
+            }
+
+            var maniaBeatmap = (ManiaBeatmap)beatmap;
+            int diff = maniaBeatmap.TotalColumns - maniaBeatmap.OriginalTotalColumns;
+
+            if (diff > 0)
+                scoreMultiplier *= 0.9;
+            else if (diff < 0)
+                scoreMultiplier *= 0.9 + 0.04 * diff;
+
+            return scoreMultiplier;
+        }
     }
 }

osu.Game.Rulesets.Mania/Difficulty/ManiaPerformanceCalculator.cs

@@ -5,7 +5,6 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Extensions;
-using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
@@ -29,8 +28,8 @@ namespace osu.Game.Rulesets.Mania.Difficulty
         private int countMeh;
         private int countMiss;
 
-        public ManiaPerformanceCalculator(Ruleset ruleset, WorkingBeatmap beatmap, ScoreInfo score)
-            : base(ruleset, beatmap, score)
+        public ManiaPerformanceCalculator(Ruleset ruleset, DifficultyAttributes attributes, ScoreInfo score)
+            : base(ruleset, attributes, score)
         {
         }
 

osu.Game.Rulesets.Mania/Difficulty/Skills/Individual.cs

@@ -1,47 +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.Linq;
-using osu.Game.Rulesets.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Difficulty.Skills;
-using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Objects;
-
-namespace osu.Game.Rulesets.Mania.Difficulty.Skills
-{
-    public class Individual : Skill
-    {
-        protected override double SkillMultiplier => 1;
-        protected override double StrainDecayBase => 0.125;
-
-        private readonly double[] holdEndTimes;
-
-        private readonly int column;
-
-        public Individual(int column, int columnCount)
-        {
-            this.column = column;
-
-            holdEndTimes = new double[columnCount];
-        }
-
-        protected override double StrainValueOf(DifficultyHitObject current)
-        {
-            var maniaCurrent = (ManiaDifficultyHitObject)current;
-            var endTime = maniaCurrent.BaseObject.GetEndTime();
-
-            try
-            {
-                if (maniaCurrent.BaseObject.Column != column)
-                    return 0;
-
-                // We give a slight bonus if something is held meanwhile
-                return holdEndTimes.Any(t => t > endTime) ? 2.5 : 2;
-            }
-            finally
-            {
-                holdEndTimes[maniaCurrent.BaseObject.Column] = endTime;
-            }
-        }
-    }
-}

osu.Game.Rulesets.Mania/Difficulty/Skills/Overall.cs

@@ -1,56 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-using osu.Game.Rulesets.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Difficulty.Skills;
-using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
-using osu.Game.Rulesets.Objects;
-
-namespace osu.Game.Rulesets.Mania.Difficulty.Skills
-{
-    public class Overall : Skill
-    {
-        protected override double SkillMultiplier => 1;
-        protected override double StrainDecayBase => 0.3;
-
-        private readonly double[] holdEndTimes;
-
-        private readonly int columnCount;
-
-        public Overall(int columnCount)
-        {
-            this.columnCount = columnCount;
-
-            holdEndTimes = new double[columnCount];
-        }
-
-        protected override double StrainValueOf(DifficultyHitObject current)
-        {
-            var maniaCurrent = (ManiaDifficultyHitObject)current;
-            var endTime = maniaCurrent.BaseObject.GetEndTime();
-
-            double holdFactor = 1.0; // Factor in case something else is held
-            double holdAddition = 0; // Addition to the current note in case it's a hold and has to be released awkwardly
-
-            for (int i = 0; i < columnCount; i++)
-            {
-                // If there is at least one other overlapping end or note, then we get an addition, buuuuuut...
-                if (current.BaseObject.StartTime < holdEndTimes[i] && endTime > holdEndTimes[i])
-                    holdAddition = 1.0;
-
-                // ... this addition only is valid if there is _no_ other note with the same ending.
-                // Releasing multiple notes at the same time is just as easy as releasing one
-                if (endTime == holdEndTimes[i])
-                    holdAddition = 0;
-
-                // We give a slight bonus if something is held meanwhile
-                if (holdEndTimes[i] > endTime)
-                    holdFactor = 1.25;
-            }
-
-            holdEndTimes[maniaCurrent.BaseObject.Column] = endTime;
-
-            return (1 + holdAddition) * holdFactor;
-        }
-    }
-}

osu.Game.Rulesets.Mania/Difficulty/Skills/Strain.cs

@@ -0,0 +1,80 @@
+// 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.Utils;
+using osu.Game.Rulesets.Difficulty.Preprocessing;
+using osu.Game.Rulesets.Difficulty.Skills;
+using osu.Game.Rulesets.Mania.Difficulty.Preprocessing;
+using osu.Game.Rulesets.Objects;
+
+namespace osu.Game.Rulesets.Mania.Difficulty.Skills
+{
+    public class Strain : Skill
+    {
+        private const double individual_decay_base = 0.125;
+        private const double overall_decay_base = 0.30;
+
+        protected override double SkillMultiplier => 1;
+        protected override double StrainDecayBase => 1;
+
+        private readonly double[] holdEndTimes;
+        private readonly double[] individualStrains;
+
+        private double individualStrain;
+        private double overallStrain;
+
+        public Strain(int totalColumns)
+        {
+            holdEndTimes = new double[totalColumns];
+            individualStrains = new double[totalColumns];
+            overallStrain = 1;
+        }
+
+        protected override double StrainValueOf(DifficultyHitObject current)
+        {
+            var maniaCurrent = (ManiaDifficultyHitObject)current;
+            var endTime = maniaCurrent.BaseObject.GetEndTime();
+            var column = maniaCurrent.BaseObject.Column;
+
+            double holdFactor = 1.0; // Factor to all additional strains in case something else is held
+            double holdAddition = 0; // Addition to the current note in case it's a hold and has to be released awkwardly
+
+            // Fill up the holdEndTimes array
+            for (int i = 0; i < holdEndTimes.Length; ++i)
+            {
+                // If there is at least one other overlapping end or note, then we get an addition, buuuuuut...
+                if (Precision.DefinitelyBigger(holdEndTimes[i], maniaCurrent.BaseObject.StartTime, 1) && Precision.DefinitelyBigger(endTime, holdEndTimes[i], 1))
+                    holdAddition = 1.0;
+
+                // ... this addition only is valid if there is _no_ other note with the same ending. Releasing multiple notes at the same time is just as easy as releasing 1
+                if (Precision.AlmostEquals(endTime, holdEndTimes[i], 1))
+                    holdAddition = 0;
+
+                // We give a slight bonus to everything if something is held meanwhile
+                if (Precision.DefinitelyBigger(holdEndTimes[i], endTime, 1))
+                    holdFactor = 1.25;
+
+                // Decay individual strains
+                individualStrains[i] = applyDecay(individualStrains[i], current.DeltaTime, individual_decay_base);
+            }
+
+            holdEndTimes[column] = endTime;
+
+            // Increase individual strain in own column
+            individualStrains[column] += 2.0 * holdFactor;
+            individualStrain = individualStrains[column];
+
+            overallStrain = applyDecay(overallStrain, current.DeltaTime, overall_decay_base) + (1 + holdAddition) * holdFactor;
+
+            return individualStrain + overallStrain - CurrentStrain;
+        }
+
+        protected override double GetPeakStrain(double offset)
+            => applyDecay(individualStrain, offset - Previous[0].BaseObject.StartTime, individual_decay_base)
+               + applyDecay(overallStrain, offset - Previous[0].BaseObject.StartTime, overall_decay_base);
+
+        private double applyDecay(double value, double deltaTime, double decayBase)
+            => value * Math.Pow(decayBase, deltaTime / 1000);
+    }
+}

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

@@ -204,10 +204,6 @@ namespace osu.Game.Rulesets.Mania.Edit
             protected override void UpdateInitialTransforms()
             {
                 // don't perform any fading – we are handling that ourselves.
-            }
-
-            protected override void UpdateStateTransforms(ArmedState state)
-            {
                 LifetimeEnd = HitObject.StartTime + visible_range;
             }
         }

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

@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Collections.Generic;
 using osu.Game.Rulesets.Edit;
 using osu.Game.Rulesets.Mania.Edit.Blueprints;
 using osu.Game.Rulesets.Mania.Objects.Drawables;
@@ -12,8 +11,8 @@ namespace osu.Game.Rulesets.Mania.Edit
 {
     public class ManiaBlueprintContainer : ComposeBlueprintContainer
     {
-        public ManiaBlueprintContainer(IEnumerable<DrawableHitObject> drawableHitObjects)
-            : base(drawableHitObjects)
+        public ManiaBlueprintContainer(HitObjectComposer composer)
+            : base(composer)
         {
         }