Merge branch 'master' into non-concurrent-sample-playback

.idea/.idea.osu.Desktop/.idea/runConfigurations/Benchmarks.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="Benchmarks" type="DotNetProject" factoryName=".NET Project">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Benchmarks/bin/Release/netcoreapp3.1/osu.Game.Benchmarks.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Benchmarks/bin/Release/net5.0/osu.Game.Benchmarks.dll" />
     <option name="PROGRAM_PARAMETERS" value="--filter *" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Benchmarks/bin/Release/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Benchmarks/bin/Release/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <method v="2">
       <option name="Build" enabled="true" />
     </method>

.idea/.idea.osu.Desktop/.idea/runConfigurations/CatchRuleset__Tests_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="CatchRuleset (Tests)" type="DotNetProject" factoryName=".NET Project" folderName="Ruleset" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Catch.Tests/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Catch.Tests.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Catch.Tests/bin/Debug/net5.0/osu.Game.Rulesets.Catch.Tests.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Catch.Tests/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Catch.Tests/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <browser url="http://localhost:5000" />
     <method v="2">
       <option name="Build" />

.idea/.idea.osu.Desktop/.idea/runConfigurations/ManiaRuleset__Tests_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="ManiaRuleset (Tests)" type="DotNetProject" factoryName=".NET Project" folderName="Ruleset" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Mania.Tests/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Mania.Tests.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Mania.Tests/bin/Debug/net5.0/osu.Game.Rulesets.Mania.Tests.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Mania.Tests/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Mania.Tests/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <browser url="http://localhost:5000" />
     <method v="2">
       <option name="Build" />

.idea/.idea.osu.Desktop/.idea/runConfigurations/OsuRuleset__Tests_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="OsuRuleset (Tests)" type="DotNetProject" factoryName=".NET Project" folderName="Ruleset" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Osu.Tests/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Osu.Tests.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Osu.Tests/bin/Debug/net5.0/osu.Game.Rulesets.Osu.Tests.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Osu.Tests/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Osu.Tests/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <browser url="http://localhost:5000" />
     <method v="2">
       <option name="Build" />

.idea/.idea.osu.Desktop/.idea/runConfigurations/TaikoRuleset__Tests_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="TaikoRuleset (Tests)" type="DotNetProject" factoryName=".NET Project" folderName="Ruleset" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Taiko.Tests/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Taiko.Tests.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Rulesets.Taiko.Tests/bin/Debug/net5.0/osu.Game.Rulesets.Taiko.Tests.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Taiko.Tests/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Rulesets.Taiko.Tests/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <browser url="http://localhost:5000" />
     <method v="2">
       <option name="Build" />

.idea/.idea.osu.Desktop/.idea/runConfigurations/Tournament.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="Tournament" type="DotNetProject" factoryName=".NET Project" folderName="Tournament" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/netcoreapp3.1/osu!.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0/osu!.dll" />
     <option name="PROGRAM_PARAMETERS" value="--tournament" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <method v="2">
       <option name="Build" />
     </method>

.idea/.idea.osu.Desktop/.idea/runConfigurations/Tournament__Tests_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="Tournament (Tests)" type="DotNetProject" factoryName=".NET Project" folderName="Tournament" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Tournament.Tests/bin/Debug/netcoreapp3.1/osu.Game.Tournament.Tests.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Tournament.Tests/bin/Debug/net5.0/osu.Game.Tournament.Tests.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Tournament.Tests/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Tournament.Tests/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <browser url="http://localhost:5000" />
     <method v="2">
       <option name="Build" />

.idea/.idea.osu.Desktop/.idea/runConfigurations/osu_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="osu!" type="DotNetProject" factoryName=".NET Project" folderName="osu!" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/netcoreapp3.1/osu!.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0/osu!.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <method v="2">
       <option name="Build" />
     </method>

.idea/.idea.osu.Desktop/.idea/runConfigurations/osu___Tests_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="osu! (Tests)" type="DotNetProject" factoryName=".NET Project" folderName="osu!" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Tests/bin/Debug/netcoreapp3.1/osu.Game.Tests.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Game.Tests/bin/Debug/net5.0/osu.Game.Tests.dll" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Tests/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Game.Tests/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <method v="2">
       <option name="Build" />
     </method>

.idea/.idea.osu.Desktop/.idea/runConfigurations/osu___legacy_osuTK_.xml

@@ -1,8 +1,8 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="osu! (legacy osuTK)" type="DotNetProject" factoryName=".NET Project" folderName="osu!" activateToolWindowBeforeRun="false">
-    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/netcoreapp3.1/osu!.dll" />
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0/osu!.dll" />
     <option name="PROGRAM_PARAMETERS" value="--tk" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/netcoreapp3.1" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />
@@ -12,7 +12,7 @@
     <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
     <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="1" />
     <option name="PROJECT_KIND" value="DotNetCore" />
-    <option name="PROJECT_TFM" value=".NETCoreApp,Version=v3.1" />
+    <option name="PROJECT_TFM" value="net5.0" />
     <method v="2">
       <option name="Build" />
     </method>

.vscode/launch.json

@@ -7,7 +7,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Desktop/bin/Debug/netcoreapp3.1/osu!.dll"
+                "${workspaceRoot}/osu.Desktop/bin/Debug/net5.0/osu!.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build osu! (Debug)",
@@ -19,7 +19,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Desktop/bin/Release/netcoreapp3.1/osu!.dll"
+                "${workspaceRoot}/osu.Desktop/bin/Release/net5.0/osu!.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build osu! (Release)",
@@ -31,7 +31,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Game.Tests/bin/Debug/netcoreapp3.1/osu.Game.Tests.dll"
+                "${workspaceRoot}/osu.Game.Tests/bin/Debug/net5.0/osu.Game.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build tests (Debug)",
@@ -43,7 +43,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Game.Tests/bin/Release/netcoreapp3.1/osu.Game.Tests.dll"
+                "${workspaceRoot}/osu.Game.Tests/bin/Release/net5.0/osu.Game.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build tests (Release)",
@@ -55,7 +55,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Desktop/bin/Debug/netcoreapp3.1/osu!.dll",
+                "${workspaceRoot}/osu.Desktop/bin/Debug/net5.0/osu!.dll",
                 "--tournament"
             ],
             "cwd": "${workspaceRoot}",
@@ -68,7 +68,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Desktop/bin/Release/netcoreapp3.1/osu!.dll",
+                "${workspaceRoot}/osu.Desktop/bin/Release/net5.0/osu!.dll",
                 "--tournament"
             ],
             "cwd": "${workspaceRoot}",
@@ -81,7 +81,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Game.Tournament.Tests/bin/Debug/netcoreapp3.1/osu.Game.Tournament.Tests.dll",
+                "${workspaceRoot}/osu.Game.Tournament.Tests/bin/Debug/net5.0/osu.Game.Tournament.Tests.dll",
                 "--tournament"
             ],
             "cwd": "${workspaceRoot}",
@@ -94,7 +94,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/osu.Game.Tournament.Tests/bin/Debug/netcoreapp3.1/osu.Game.Tournament.Tests.dll",
+                "${workspaceRoot}/osu.Game.Tournament.Tests/bin/Debug/net5.0/osu.Game.Tournament.Tests.dll",
                 "--tournament"
             ],
             "cwd": "${workspaceRoot}",
@@ -105,7 +105,7 @@
             "name": "Benchmark",
             "type": "coreclr",
             "request": "launch",
-            "program": "${workspaceRoot}/osu.Game.Benchmarks/bin/Release/netcoreapp3.1/osu.Game.Benchmarks.dll",
+            "program": "${workspaceRoot}/osu.Game.Benchmarks/bin/Release/net5.0/osu.Game.Benchmarks.dll",
             "args": [
                 "--filter",
                 "*"

README.md

@@ -5,7 +5,7 @@
 # osu!
 
 [![Build status](https://ci.appveyor.com/api/projects/status/u2p01nx7l6og8buh?svg=true)](https://ci.appveyor.com/project/peppy/osu)
-[![GitHub release](https://img.shields.io/github/release/ppy/osu.svg)]()
+[![GitHub release](https://img.shields.io/github/release/ppy/osu.svg)](https://github.com/ppy/osu/releases/latest)
 [![CodeFactor](https://www.codefactor.io/repository/github/ppy/osu/badge)](https://www.codefactor.io/repository/github/ppy/osu)
 [![dev chat](https://discordapp.com/api/guilds/188630481301012481/widget.png?style=shield)](https://discord.gg/ppy)
 
@@ -36,8 +36,7 @@ If you are looking to install or test osu! without setting up a development envi
 
 - 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.
+- When running on Windows 7 or 8.1, *[additional prerequisites](https://docs.microsoft.com/en-us/dotnet/core/install/windows?tabs=net50&pivots=os-windows#dependencies)** may be required to correctly run .NET 5 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 a custom ruleset
@@ -50,7 +49,7 @@ You can see some examples of custom rulesets by visiting the [custom ruleset dir
 
 Please make sure you have the following prerequisites:
 
-- A desktop platform with the [.NET Core 3.1 SDK](https://dotnet.microsoft.com/download) or higher installed.
+- A desktop platform with the [.NET 5.0 SDK](https://dotnet.microsoft.com/download) or higher installed.
 - When developing with mobile, [Xamarin](https://docs.microsoft.com/en-us/xamarin/) is required, which is shipped together with Visual Studio or [Visual Studio for Mac](https://visualstudio.microsoft.com/vs/mac/).
 - When working with the codebase, we recommend using an IDE with intelligent code completion and syntax highlighting, such as [Visual Studio 2019+](https://visualstudio.microsoft.com/vs/), [JetBrains Rider](https://www.jetbrains.com/rider/) or [Visual Studio Code](https://code.visualstudio.com/).
 - When running on Linux, please have a system-wide FFmpeg installation available to support video decoding.

osu.Android.props

@@ -51,7 +51,7 @@
     <Reference Include="Java.Interop" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2020.1202.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2021.211.1" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.118.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.128.0" />
   </ItemGroup>
 </Project>

osu.Desktop/osu.Desktop.csproj

@@ -24,16 +24,13 @@
     <ProjectReference Include="..\osu.Game.Rulesets.Taiko\osu.Game.Rulesets.Taiko.csproj" />
   </ItemGroup>
   <ItemGroup Label="Package References">
+    <PackageReference Include="Microsoft.NETCore.Targets" Version="5.0.0" />
     <PackageReference Include="System.IO.Packaging" Version="5.0.0" />
-    <PackageReference Include="ppy.squirrel.windows" Version="1.9.0.4" />
+    <PackageReference Include="ppy.squirrel.windows" Version="1.9.0.5" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="2.2.6" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="2.2.6" />
     <PackageReference Include="Microsoft.Win32.Registry" Version="5.0.0" />
-    <PackageReference Include="DiscordRichPresence" Version="1.0.169" />
+    <PackageReference Include="DiscordRichPresence" Version="1.0.175" />
-    <!-- .NET 3.1 SDK seems to cause issues with a runtime specification. This will likely be resolved in .NET 5. -->
-    <PackageReference Include="System.IO.FileSystem.Primitives" Version="4.3.0" />
-    <PackageReference Include="System.Runtime.Handles" Version="4.3.0" />
-    <PackageReference Include="System.Runtime.InteropServices" Version="4.3.0" />
   </ItemGroup>
   <ItemGroup Label="Resources">
     <EmbeddedResource Include="lazer.ico" />

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

@@ -7,7 +7,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Catch.Tests.dll"
+                "${workspaceRoot}/bin/Debug/net5.0/osu.Game.Rulesets.Catch.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Debug)",
@@ -20,7 +20,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Release/netcoreapp3.1/osu.Game.Rulesets.Catch.Tests.dll"
+                "${workspaceRoot}/bin/Release/net5.0/osu.Game.Rulesets.Catch.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Release)",

osu.Game.Rulesets.Catch/Mods/CatchModAutoplay.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.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Replays;
@@ -12,7 +13,7 @@ namespace osu.Game.Rulesets.Catch.Mods
 {
     public class CatchModAutoplay : ModAutoplay<CatchHitObject>
     {
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "osu!salad!" } },
             Replay = new CatchAutoGenerator(beatmap).Generate(),

osu.Game.Rulesets.Catch/Mods/CatchModCinema.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.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Replays;
@@ -12,7 +13,7 @@ namespace osu.Game.Rulesets.Catch.Mods
 {
     public class CatchModCinema : ModCinema<CatchHitObject>
     {
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "osu!salad!" } },
             Replay = new CatchAutoGenerator(beatmap).Generate(),

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

@@ -12,7 +12,7 @@ namespace osu.Game.Rulesets.Catch.Mods
     public class CatchModDifficultyAdjust : ModDifficultyAdjust
     {
         [SettingSource("Circle Size", "Override a beatmap's set CS.", FIRST_SETTING_ORDER - 1)]
-        public BindableNumber<float> CircleSize { get; } = new BindableFloat
+        public BindableNumber<float> CircleSize { get; } = new BindableFloatWithLimitExtension
         {
             Precision = 0.1f,
             MinValue = 1,
@@ -22,7 +22,7 @@ namespace osu.Game.Rulesets.Catch.Mods
         };
 
         [SettingSource("Approach Rate", "Override a beatmap's set AR.", LAST_SETTING_ORDER + 1)]
-        public BindableNumber<float> ApproachRate { get; } = new BindableFloat
+        public BindableNumber<float> ApproachRate { get; } = new BindableFloatWithLimitExtension
         {
             Precision = 0.1f,
             MinValue = 1,
@@ -31,6 +31,14 @@ namespace osu.Game.Rulesets.Catch.Mods
             Value = 5,
         };
 
+        protected override void ApplyLimits(bool extended)
+        {
+            base.ApplyLimits(extended);
+
+            CircleSize.MaxValue = extended ? 11 : 10;
+            ApproachRate.MaxValue = extended ? 11 : 10;
+        }
+
         public override string SettingDescription
         {
             get

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

@@ -45,6 +45,11 @@ namespace osu.Game.Rulesets.Catch.Replays
                 float positionChange = Math.Abs(lastPosition - h.EffectiveX);
                 double timeAvailable = h.StartTime - lastTime;
 
+                if (timeAvailable < 0)
+                {
+                    return;
+                }
+
                 // So we can either make it there without a dash or not.
                 // If positionChange is 0, we don't need to move, so speedRequired should also be 0 (could be NaN if timeAvailable is 0 too)
                 // The case where positionChange > 0 and timeAvailable == 0 results in PositiveInfinity which provides expected beheaviour.

osu.Game.Rulesets.Catch/Skinning/Default/BorderPiece.cs

@@ -29,4 +29,3 @@ namespace osu.Game.Rulesets.Catch.Skinning.Default
         }
     }
 }
-

osu.Game.Rulesets.Catch/Skinning/Default/HyperBorderPiece.cs

@@ -19,4 +19,3 @@ namespace osu.Game.Rulesets.Catch.Skinning.Default
         }
     }
 }
-

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

@@ -7,7 +7,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Mania.Tests.dll"
+                "${workspaceRoot}/bin/Debug/net5.0/osu.Game.Rulesets.Mania.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Debug)",
@@ -20,7 +20,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Release/netcoreapp3.1/osu.Game.Rulesets.Mania.Tests.dll"
+                "${workspaceRoot}/bin/Release/net5.0/osu.Game.Rulesets.Mania.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Release)",

osu.Game.Rulesets.Mania.Tests/Mods/TestSceneManiaModConstantSpeed.cs

@@ -0,0 +1,31 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Testing;
+using osu.Game.Rulesets.Mania.Mods;
+using osu.Game.Rulesets.Mania.Objects.Drawables;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Rulesets.UI.Scrolling.Algorithms;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Mania.Tests.Mods
+{
+    public class TestSceneManiaModConstantSpeed : ModTestScene
+    {
+        protected override Ruleset CreatePlayerRuleset() => new ManiaRuleset();
+
+        [Test]
+        public void TestConstantScroll() => CreateModTest(new ModTestData
+        {
+            Mod = new ManiaModConstantSpeed(),
+            PassCondition = () =>
+            {
+                var hitObject = Player.ChildrenOfType<DrawableManiaHitObject>().FirstOrDefault();
+                return hitObject?.Dependencies.Get<IScrollingInfo>().Algorithm is ConstantScrollAlgorithm;
+            }
+        });
+    }
+}

osu.Game.Rulesets.Mania/ManiaRuleset.cs

@@ -238,6 +238,7 @@ namespace osu.Game.Rulesets.Mania
                         new ManiaModMirror(),
                         new ManiaModDifficultyAdjust(),
                         new ManiaModInvert(),
+                        new ManiaModConstantSpeed()
                     };
 
                 case ModType.Automation:

osu.Game.Rulesets.Mania/Mods/ManiaModAutoplay.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.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
@@ -13,7 +14,7 @@ namespace osu.Game.Rulesets.Mania.Mods
 {
     public class ManiaModAutoplay : ModAutoplay<ManiaHitObject>
     {
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "osu!topus!" } },
             Replay = new ManiaAutoGenerator((ManiaBeatmap)beatmap).Generate(),

osu.Game.Rulesets.Mania/Mods/ManiaModCinema.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.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mania.Beatmaps;
 using osu.Game.Rulesets.Mania.Objects;
@@ -13,7 +14,7 @@ namespace osu.Game.Rulesets.Mania.Mods
 {
     public class ManiaModCinema : ModCinema<ManiaHitObject>
     {
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "osu!topus!" } },
             Replay = new ManiaAutoGenerator((ManiaBeatmap)beatmap).Generate(),

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

@@ -0,0 +1,35 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Configuration;
+using osu.Game.Rulesets.Mania.Objects;
+using osu.Game.Rulesets.Mania.UI;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Mania.Mods
+{
+    public class ManiaModConstantSpeed : Mod, IApplicableToDrawableRuleset<ManiaHitObject>
+    {
+        public override string Name => "Constant Speed";
+
+        public override string Acronym => "CS";
+
+        public override double ScoreMultiplier => 1;
+
+        public override string Description => "No more tricky speed changes!";
+
+        public override IconUsage? Icon => FontAwesome.Solid.Equals;
+
+        public override ModType Type => ModType.Conversion;
+
+        public override bool Ranked => false;
+
+        public void ApplyToDrawableRuleset(DrawableRuleset<ManiaHitObject> drawableRuleset)
+        {
+            var maniaRuleset = (DrawableManiaRuleset)drawableRuleset;
+            maniaRuleset.ScrollMethod = ScrollVisualisationMethod.Constant;
+        }
+    }
+}

osu.Game.Rulesets.Mania/UI/DrawableManiaRuleset.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.Framework.Allocation;
@@ -11,6 +12,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Input;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Configuration;
 using osu.Game.Input.Handlers;
 using osu.Game.Replays;
 using osu.Game.Rulesets.Mania.Beatmaps;
@@ -49,6 +51,22 @@ namespace osu.Game.Rulesets.Mania.UI
 
         protected new ManiaRulesetConfigManager Config => (ManiaRulesetConfigManager)base.Config;
 
+        public ScrollVisualisationMethod ScrollMethod
+        {
+            get => scrollMethod;
+            set
+            {
+                if (IsLoaded)
+                    throw new InvalidOperationException($"Can't alter {nameof(ScrollMethod)} after ruleset is already loaded");
+
+                scrollMethod = value;
+            }
+        }
+
+        private ScrollVisualisationMethod scrollMethod = ScrollVisualisationMethod.Sequential;
+
+        protected override ScrollVisualisationMethod VisualisationMethod => scrollMethod;
+
         private readonly Bindable<ManiaScrollingDirection> configDirection = new Bindable<ManiaScrollingDirection>();
         private readonly Bindable<double> configTimeRange = new BindableDouble();
 

osu.Game.Rulesets.Osu.Tests/.vscode/launch.json

@@ -7,7 +7,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Osu.Tests.dll"
+                "${workspaceRoot}/bin/Debug/net5.0/osu.Game.Rulesets.Osu.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Debug)",
@@ -20,7 +20,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Release/netcoreapp3.1/osu.Game.Rulesets.Osu.Tests.dll"
+                "${workspaceRoot}/bin/Release/net5.0/osu.Game.Rulesets.Osu.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Release)",

osu.Game.Rulesets.Osu.Tests/Mods/TestSceneOsuModAutoplay.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.Testing;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.Skinning.Default;
+using osu.Game.Rulesets.Osu.UI;
+
+namespace osu.Game.Rulesets.Osu.Tests.Mods
+{
+    public class TestSceneOsuModAutoplay : OsuModTestScene
+    {
+        [Test]
+        public void TestSpmUnaffectedByRateAdjust()
+            => runSpmTest(new OsuModDaycore
+            {
+                SpeedChange = { Value = 0.88 }
+            });
+
+        [Test]
+        public void TestSpmUnaffectedByTimeRamp()
+            => runSpmTest(new ModWindUp
+            {
+                InitialRate = { Value = 0.7 },
+                FinalRate = { Value = 1.3 }
+            });
+
+        private void runSpmTest(Mod mod)
+        {
+            SpinnerSpmCounter spmCounter = null;
+
+            CreateModTest(new ModTestData
+            {
+                Autoplay = true,
+                Mod = mod,
+                Beatmap = new Beatmap
+                {
+                    HitObjects =
+                    {
+                        new Spinner
+                        {
+                            Duration = 2000,
+                            Position = OsuPlayfield.BASE_SIZE / 2
+                        }
+                    }
+                },
+                PassCondition = () => Player.ScoreProcessor.JudgedHits >= 1
+            });
+
+            AddUntilStep("fetch SPM counter", () =>
+            {
+                spmCounter = this.ChildrenOfType<SpinnerSpmCounter>().SingleOrDefault();
+                return spmCounter != null;
+            });
+
+            AddUntilStep("SPM is correct", () => Precision.AlmostEquals(spmCounter.SpinsPerMinute, 477, 5));
+        }
+    }
+}

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

@@ -1,9 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Collections.Generic;
 using NUnit.Framework;
 using osu.Game.Beatmaps;
 using osu.Game.Replays;
+using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Rulesets.Osu.Objects;
@@ -65,10 +67,10 @@ namespace osu.Game.Rulesets.Osu.Tests
 
         private class TestAutoMod : OsuModAutoplay
         {
-            public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+            public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
             {
                 ScoreInfo = new ScoreInfo { User = new User { Username = "Autoplay" } },
-                Replay = new MissingAutoGenerator(beatmap).Generate()
+                Replay = new MissingAutoGenerator(beatmap, mods).Generate()
             };
         }
 
@@ -76,8 +78,8 @@ namespace osu.Game.Rulesets.Osu.Tests
         {
             public new OsuBeatmap Beatmap => (OsuBeatmap)base.Beatmap;
 
-            public MissingAutoGenerator(IBeatmap beatmap)
+            public MissingAutoGenerator(IBeatmap beatmap, IReadOnlyList<Mod> mods)
-                : base(beatmap)
+                : base(beatmap, mods)
             {
             }
 

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

@@ -0,0 +1,491 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Extensions.TypeExtensions;
+using osu.Framework.Screens;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Replays;
+using osu.Game.Rulesets.Judgements;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.Replays;
+using osu.Game.Rulesets.Replays;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+using osu.Game.Screens.Play;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Osu.Tests
+{
+    public class TestSceneObjectOrderedHitPolicy : RateAdjustedBeatmapTestScene
+    {
+        private const double early_miss_window = 1000; // time after -1000 to -500 is considered a miss
+        private const double late_miss_window = 500; // time after +500 is considered a miss
+
+        /// <summary>
+        /// Tests clicking a future circle before the first circle's start time, while the first circle HAS NOT been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleBeforeFirstCircleTime()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle - 100, Position = positionSecondCircle, Actions = { OsuAction.LeftButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Miss);
+            addJudgementOffsetAssert(hitObjects[0], late_miss_window);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle at the first circle's start time, while the first circle HAS NOT been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleAtFirstCircleTime()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle, Position = positionSecondCircle, Actions = { OsuAction.LeftButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Miss);
+            addJudgementOffsetAssert(hitObjects[0], late_miss_window);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle after the first circle's start time, while the first circle HAS NOT been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleAfterFirstCircleTime()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle + 100, Position = positionSecondCircle, Actions = { OsuAction.LeftButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Miss);
+            addJudgementOffsetAssert(hitObjects[0], late_miss_window);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle before the first circle's start time, while the first circle HAS been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleBeforeFirstCircleTimeWithFirstCircleJudged()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle - 200, Position = positionFirstCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_first_circle - 100, Position = positionSecondCircle, Actions = { OsuAction.RightButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementOffsetAssert(hitObjects[0], -200); // time_first_circle - 200
+            addJudgementOffsetAssert(hitObjects[0], -200); // time_second_circle - first_circle_time - 100
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle after the first circle's start time, while the first circle HAS been judged.
+        /// </summary>
+        [Test]
+        public void TestClickSecondCircleAfterFirstCircleTimeWithFirstCircleJudged()
+        {
+            const double time_first_circle = 1500;
+            const double time_second_circle = 1600;
+            Vector2 positionFirstCircle = Vector2.Zero;
+            Vector2 positionSecondCircle = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_first_circle,
+                    Position = positionFirstCircle
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_second_circle,
+                    Position = positionSecondCircle
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_first_circle - 200, Position = positionFirstCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_first_circle, Position = positionSecondCircle, Actions = { OsuAction.RightButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementOffsetAssert(hitObjects[0], -200); // time_first_circle - 200
+            addJudgementOffsetAssert(hitObjects[1], -100); // time_second_circle - first_circle_time
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle after a slider's start time, but hitting all slider ticks.
+        /// </summary>
+        [Test]
+        public void TestMissSliderHeadAndHitAllSliderTicks()
+        {
+            const double time_slider = 1500;
+            const double time_circle = 1510;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_slider, Position = positionCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_slider + 10, Position = positionSlider, Actions = { OsuAction.RightButton } }
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Miss);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementAssert("slider head", () => ((Slider)hitObjects[1]).HeadCircle, HitResult.LargeTickHit);
+            addJudgementAssert("slider tick", () => ((Slider)hitObjects[1]).NestedHitObjects[1] as SliderTick, HitResult.LargeTickHit);
+        }
+
+        /// <summary>
+        /// Tests clicking hitting future slider ticks before a circle.
+        /// </summary>
+        [Test]
+        public void TestHitSliderTicksBeforeCircle()
+        {
+            const double time_slider = 1500;
+            const double time_circle = 1510;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(30);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_slider, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_circle + late_miss_window - 100, Position = positionCircle, Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_circle + late_miss_window - 90, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+            addJudgementAssert("slider head", () => ((Slider)hitObjects[1]).HeadCircle, HitResult.LargeTickHit);
+            addJudgementAssert("slider tick", () => ((Slider)hitObjects[1]).NestedHitObjects[1] as SliderTick, HitResult.LargeTickHit);
+        }
+
+        /// <summary>
+        /// Tests clicking a future circle before a spinner.
+        /// </summary>
+        [Test]
+        public void TestHitCircleBeforeSpinner()
+        {
+            const double time_spinner = 1500;
+            const double time_circle = 1800;
+            Vector2 positionCircle = Vector2.Zero;
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestSpinner
+                {
+                    StartTime = time_spinner,
+                    Position = new Vector2(256, 192),
+                    EndTime = time_spinner + 1000,
+                },
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_spinner - 100, Position = positionCircle, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_spinner + 10, Position = new Vector2(236, 192), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 20, Position = new Vector2(256, 172), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 30, Position = new Vector2(276, 192), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 40, Position = new Vector2(256, 212), Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_spinner + 50, Position = new Vector2(236, 192), Actions = { OsuAction.RightButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+        }
+
+        [Test]
+        public void TestHitSliderHeadBeforeHitCircle()
+        {
+            const double time_circle = 1000;
+            const double time_slider = 1200;
+            Vector2 positionCircle = Vector2.Zero;
+            Vector2 positionSlider = new Vector2(80);
+
+            var hitObjects = new List<OsuHitObject>
+            {
+                new TestHitCircle
+                {
+                    StartTime = time_circle,
+                    Position = positionCircle
+                },
+                new TestSlider
+                {
+                    StartTime = time_slider,
+                    Position = positionSlider,
+                    Path = new SliderPath(PathType.Linear, new[]
+                    {
+                        Vector2.Zero,
+                        new Vector2(25, 0),
+                    })
+                }
+            };
+
+            performTest(hitObjects, new List<ReplayFrame>
+            {
+                new OsuReplayFrame { Time = time_circle - 100, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+                new OsuReplayFrame { Time = time_circle, Position = positionCircle, Actions = { OsuAction.RightButton } },
+                new OsuReplayFrame { Time = time_slider, Position = positionSlider, Actions = { OsuAction.LeftButton } },
+            });
+
+            addJudgementAssert(hitObjects[0], HitResult.Great);
+            addJudgementAssert(hitObjects[1], HitResult.Great);
+        }
+
+        private void addJudgementAssert(OsuHitObject hitObject, HitResult result)
+        {
+            AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judgement is {result}",
+                () => judgementResults.Single(r => r.HitObject == hitObject).Type == result);
+        }
+
+        private void addJudgementAssert(string name, Func<OsuHitObject> hitObject, HitResult result)
+        {
+            AddAssert($"{name} judgement is {result}",
+                () => judgementResults.Single(r => r.HitObject == hitObject()).Type == result);
+        }
+
+        private void addJudgementOffsetAssert(OsuHitObject hitObject, double offset)
+        {
+            AddAssert($"({hitObject.GetType().ReadableName()} @ {hitObject.StartTime}) judged at {offset}",
+                () => Precision.AlmostEquals(judgementResults.Single(r => r.HitObject == hitObject).TimeOffset, offset, 100));
+        }
+
+        private ScoreAccessibleReplayPlayer currentPlayer;
+        private List<JudgementResult> judgementResults;
+
+        private void performTest(List<OsuHitObject> hitObjects, List<ReplayFrame> frames)
+        {
+            AddStep("load player", () =>
+            {
+                Beatmap.Value = CreateWorkingBeatmap(new Beatmap<OsuHitObject>
+                {
+                    HitObjects = hitObjects,
+                    BeatmapInfo =
+                    {
+                        BaseDifficulty = new BeatmapDifficulty { SliderTickRate = 3 },
+                        Ruleset = new OsuRuleset().RulesetInfo
+                    },
+                });
+
+                Beatmap.Value.Beatmap.ControlPointInfo.Add(0, new DifficultyControlPoint { SpeedMultiplier = 0.1f });
+
+                SelectedMods.Value = new[] { new OsuModClassic() };
+
+                var p = new ScoreAccessibleReplayPlayer(new Score { Replay = new Replay { Frames = frames } });
+
+                p.OnLoadComplete += _ =>
+                {
+                    p.ScoreProcessor.NewJudgement += result =>
+                    {
+                        if (currentPlayer == p) judgementResults.Add(result);
+                    };
+                };
+
+                LoadScreen(currentPlayer = p);
+                judgementResults = new List<JudgementResult>();
+            });
+
+            AddUntilStep("Beatmap at 0", () => Beatmap.Value.Track.CurrentTime == 0);
+            AddUntilStep("Wait until player is loaded", () => currentPlayer.IsCurrentScreen());
+            AddUntilStep("Wait for completion", () => currentPlayer.ScoreProcessor.HasCompleted.Value);
+        }
+
+        private class TestHitCircle : HitCircle
+        {
+            protected override HitWindows CreateHitWindows() => new TestHitWindows();
+        }
+
+        private class TestSlider : Slider
+        {
+            public TestSlider()
+            {
+                DefaultsApplied += _ =>
+                {
+                    HeadCircle.HitWindows = new TestHitWindows();
+                    TailCircle.HitWindows = new TestHitWindows();
+
+                    HeadCircle.HitWindows.SetDifficulty(0);
+                    TailCircle.HitWindows.SetDifficulty(0);
+                };
+            }
+        }
+
+        private class TestSpinner : Spinner
+        {
+            protected override void ApplyDefaultsToSelf(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
+            {
+                base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
+                SpinsRequired = 1;
+            }
+        }
+
+        private class TestHitWindows : HitWindows
+        {
+            private static readonly DifficultyRange[] ranges =
+            {
+                new DifficultyRange(HitResult.Great, 500, 500, 500),
+                new DifficultyRange(HitResult.Miss, early_miss_window, early_miss_window, early_miss_window),
+            };
+
+            public override bool IsHitResultAllowed(HitResult result) => result == HitResult.Great || result == HitResult.Miss;
+
+            protected override DifficultyRange[] GetRanges() => ranges;
+        }
+
+        private class ScoreAccessibleReplayPlayer : ReplayPlayer
+        {
+            public new ScoreProcessor ScoreProcessor => base.ScoreProcessor;
+
+            protected override bool PauseOnFocusLost => false;
+
+            public ScoreAccessibleReplayPlayer(Score score)
+                : base(score, new PlayerConfiguration
+                {
+                    AllowPause = false,
+                    ShowResults = false,
+                })
+            {
+            }
+        }
+    }
+}

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

@@ -25,7 +25,7 @@ using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Tests
 {
-    public class TestSceneOutOfOrderHits : RateAdjustedBeatmapTestScene
+    public class TestSceneStartTimeOrderedHitPolicy : RateAdjustedBeatmapTestScene
     {
         private const double early_miss_window = 1000; // time after -1000 to -500 is considered a miss
         private const double late_miss_window = 500; // time after +500 is considered a miss
@@ -169,7 +169,7 @@ namespace osu.Game.Rulesets.Osu.Tests
             addJudgementAssert(hitObjects[0], HitResult.Great);
             addJudgementAssert(hitObjects[1], HitResult.Great);
             addJudgementOffsetAssert(hitObjects[0], -200); // time_first_circle - 200
-            addJudgementOffsetAssert(hitObjects[0], -200); // time_second_circle - first_circle_time - 100
+            addJudgementOffsetAssert(hitObjects[1], -200); // time_second_circle - first_circle_time - 100
         }
 
         /// <summary>

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

@@ -27,7 +27,7 @@ namespace osu.Game.Rulesets.Osu.Edit.Blueprints.Sliders
         {
             base.Update();
 
-            CirclePiece.UpdateFrom(position == SliderPosition.Start ? HitObject.HeadCircle : HitObject.TailCircle);
+            CirclePiece.UpdateFrom(position == SliderPosition.Start ? (HitCircle)HitObject.HeadCircle : HitObject.TailCircle);
         }
 
         // Todo: This is temporary, since the slider circle masks don't do anything special yet. In the future they will handle input.

osu.Game.Rulesets.Osu/Judgements/SliderTickJudgement.cs

@@ -0,0 +1,12 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Rulesets.Scoring;
+
+namespace osu.Game.Rulesets.Osu.Judgements
+{
+    public class SliderTickJudgement : OsuJudgement
+    {
+        public override HitResult MaxResult => HitResult.LargeTickHit;
+    }
+}

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

@@ -62,7 +62,7 @@ namespace osu.Game.Rulesets.Osu.Mods
             inputManager.AllowUserCursorMovement = false;
 
             // Generate the replay frames the cursor should follow
-            replayFrames = new OsuAutoGenerator(drawableRuleset.Beatmap).Generate().Frames.Cast<OsuReplayFrame>().ToList();
+            replayFrames = new OsuAutoGenerator(drawableRuleset.Beatmap, drawableRuleset.Mods).Generate().Frames.Cast<OsuReplayFrame>().ToList();
         }
     }
 }

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

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
@@ -16,10 +17,10 @@ namespace osu.Game.Rulesets.Osu.Mods
     {
         public override Type[] IncompatibleMods => base.IncompatibleMods.Append(typeof(OsuModAutopilot)).Append(typeof(OsuModSpunOut)).ToArray();
 
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "Autoplay" } },
-            Replay = new OsuAutoGenerator(beatmap).Generate()
+            Replay = new OsuAutoGenerator(beatmap, mods).Generate()
         };
     }
 }

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

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
@@ -16,10 +17,10 @@ namespace osu.Game.Rulesets.Osu.Mods
     {
         public override Type[] IncompatibleMods => base.IncompatibleMods.Append(typeof(OsuModAutopilot)).Append(typeof(OsuModSpunOut)).ToArray();
 
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "Autoplay" } },
-            Replay = new OsuAutoGenerator(beatmap).Generate()
+            Replay = new OsuAutoGenerator(beatmap, mods).Generate()
         };
     }
 }

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

@@ -0,0 +1,86 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics.Sprites;
+using osu.Game.Configuration;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+using osu.Game.Rulesets.Osu.UI;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Osu.Mods
+{
+    public class OsuModClassic : Mod, IApplicableToHitObject, IApplicableToDrawableHitObjects, IApplicableToDrawableRuleset<OsuHitObject>
+    {
+        public override string Name => "Classic";
+
+        public override string Acronym => "CL";
+
+        public override double ScoreMultiplier => 1;
+
+        public override IconUsage? Icon => FontAwesome.Solid.History;
+
+        public override string Description => "Feeling nostalgic?";
+
+        public override bool Ranked => false;
+
+        public override ModType Type => ModType.Conversion;
+
+        [SettingSource("No slider head accuracy requirement", "Scores sliders proportionally to the number of ticks hit.")]
+        public Bindable<bool> NoSliderHeadAccuracy { get; } = new BindableBool(true);
+
+        [SettingSource("No slider head movement", "Pins slider heads at their starting position, regardless of time.")]
+        public Bindable<bool> NoSliderHeadMovement { get; } = new BindableBool(true);
+
+        [SettingSource("Apply classic note lock", "Applies note lock to the full hit window.")]
+        public Bindable<bool> ClassicNoteLock { get; } = new BindableBool(true);
+
+        [SettingSource("Use fixed slider follow circle hit area", "Makes the slider follow circle track its final size at all times.")]
+        public Bindable<bool> FixedFollowCircleHitArea { get; } = new BindableBool(true);
+
+        public void ApplyToHitObject(HitObject hitObject)
+        {
+            switch (hitObject)
+            {
+                case Slider slider:
+                    slider.OnlyJudgeNestedObjects = !NoSliderHeadAccuracy.Value;
+
+                    foreach (var head in slider.NestedHitObjects.OfType<SliderHeadCircle>())
+                        head.JudgeAsNormalHitCircle = !NoSliderHeadAccuracy.Value;
+
+                    break;
+            }
+        }
+
+        public void ApplyToDrawableRuleset(DrawableRuleset<OsuHitObject> drawableRuleset)
+        {
+            var osuRuleset = (DrawableOsuRuleset)drawableRuleset;
+
+            if (ClassicNoteLock.Value)
+                osuRuleset.Playfield.HitPolicy = new ObjectOrderedHitPolicy();
+        }
+
+        public void ApplyToDrawableHitObjects(IEnumerable<DrawableHitObject> drawables)
+        {
+            foreach (var obj in drawables)
+            {
+                switch (obj)
+                {
+                    case DrawableSlider slider:
+                        slider.Ball.InputTracksVisualSize = !FixedFollowCircleHitArea.Value;
+                        break;
+
+                    case DrawableSliderHead head:
+                        head.TrackFollowCircle = !NoSliderHeadMovement.Value;
+                        break;
+                }
+            }
+        }
+    }
+}

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

@@ -12,7 +12,7 @@ namespace osu.Game.Rulesets.Osu.Mods
     public class OsuModDifficultyAdjust : ModDifficultyAdjust
     {
         [SettingSource("Circle Size", "Override a beatmap's set CS.", FIRST_SETTING_ORDER - 1)]
-        public BindableNumber<float> CircleSize { get; } = new BindableFloat
+        public BindableNumber<float> CircleSize { get; } = new BindableFloatWithLimitExtension
         {
             Precision = 0.1f,
             MinValue = 0,
@@ -22,7 +22,7 @@ namespace osu.Game.Rulesets.Osu.Mods
         };
 
         [SettingSource("Approach Rate", "Override a beatmap's set AR.", LAST_SETTING_ORDER + 1)]
-        public BindableNumber<float> ApproachRate { get; } = new BindableFloat
+        public BindableNumber<float> ApproachRate { get; } = new BindableFloatWithLimitExtension
         {
             Precision = 0.1f,
             MinValue = 0,
@@ -31,6 +31,14 @@ namespace osu.Game.Rulesets.Osu.Mods
             Value = 5,
         };
 
+        protected override void ApplyLimits(bool extended)
+        {
+            base.ApplyLimits(extended);
+
+            CircleSize.MaxValue = extended ? 11 : 10;
+            ApproachRate.MaxValue = extended ? 11 : 10;
+        }
+
         public override string SettingDescription
         {
             get

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

@@ -110,8 +110,13 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables.Connections
             double startTime = start.GetEndTime();
             double duration = end.StartTime - startTime;
 
+            // Preempt time can go below 800ms. Normally, this is achieved via the DT mod which uniformly speeds up all animations game wide regardless of AR.
+            // This uniform speedup is hard to match 1:1, however we can at least make AR>10 (via mods) feel good by extending the upper linear preempt function (see: OsuHitObject).
+            // Note that this doesn't exactly match the AR>10 visuals as they're classically known, but it feels good.
+            double preempt = PREEMPT * Math.Min(1, start.TimePreempt / OsuHitObject.PREEMPT_MIN);
+
             fadeOutTime = startTime + fraction * duration;
-            fadeInTime = fadeOutTime - PREEMPT;
+            fadeInTime = fadeOutTime - preempt;
         }
     }
 }

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

@@ -123,7 +123,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
                 return;
             }
 
-            var result = HitObject.HitWindows.ResultFor(timeOffset);
+            var result = ResultFor(timeOffset);
 
             if (result == HitResult.None || CheckHittable?.Invoke(this, Time.Current) == false)
             {
@@ -146,6 +146,13 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             });
         }
 
+        /// <summary>
+        /// Retrieves the <see cref="HitResult"/> for a time offset.
+        /// </summary>
+        /// <param name="timeOffset">The time offset.</param>
+        /// <returns>The hit result, or <see cref="HitResult.None"/> if <paramref name="timeOffset"/> doesn't result in a judgement.</returns>
+        protected virtual HitResult ResultFor(double timeOffset) => HitObject.HitWindows.ResultFor(timeOffset);
+
         protected override void UpdateInitialTransforms()
         {
             base.UpdateInitialTransforms();

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

@@ -39,7 +39,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
             if (JudgedObject?.HitObject is OsuHitObject osuObject)
             {
-                Position = osuObject.StackedPosition;
+                Position = osuObject.StackedEndPosition;
                 Scale = new Vector2(osuObject.Scale);
             }
         }

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

@@ -15,6 +15,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Skinning;
 using osu.Game.Rulesets.Osu.Skinning.Default;
 using osu.Game.Rulesets.Osu.UI;
+using osu.Game.Rulesets.Scoring;
 using osuTK.Graphics;
 using osu.Game.Skinning;
 
@@ -30,7 +31,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
         public SliderBall Ball { get; private set; }
         public SkinnableDrawable Body { get; private set; }
 
-        public override bool DisplayResult => false;
+        public override bool DisplayResult => !HitObject.OnlyJudgeNestedObjects;
 
         private PlaySliderBody sliderBody => Body.Drawable as PlaySliderBody;
 
@@ -249,7 +250,30 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             if (userTriggered || Time.Current < HitObject.EndTime)
                 return;
 
-            ApplyResult(r => r.Type = NestedHitObjects.Any(h => h.Result.IsHit) ? r.Judgement.MaxResult : r.Judgement.MinResult);
+            // If only the nested hitobjects are judged, then the slider's own judgement is ignored for scoring purposes.
+            // But the slider needs to still be judged with a reasonable hit/miss result for visual purposes (hit/miss transforms, etc).
+            if (HitObject.OnlyJudgeNestedObjects)
+            {
+                ApplyResult(r => r.Type = NestedHitObjects.Any(h => h.Result.IsHit) ? r.Judgement.MaxResult : r.Judgement.MinResult);
+                return;
+            }
+
+            // Otherwise, if this slider also needs to be judged, apply judgement proportionally to the number of nested hitobjects hit. This is the classic osu!stable scoring.
+            ApplyResult(r =>
+            {
+                int totalTicks = NestedHitObjects.Count;
+                int hitTicks = NestedHitObjects.Count(h => h.IsHit);
+
+                if (hitTicks == totalTicks)
+                    r.Type = HitResult.Great;
+                else if (hitTicks == 0)
+                    r.Type = HitResult.Miss;
+                else
+                {
+                    double hitFraction = (double)hitTicks / totalTicks;
+                    r.Type = hitFraction >= 0.5 ? HitResult.Ok : HitResult.Meh;
+                }
+            });
         }
 
         public override void PlaySamples()

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

@@ -7,16 +7,27 @@ using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Scoring;
 
 namespace osu.Game.Rulesets.Osu.Objects.Drawables
 {
     public class DrawableSliderHead : DrawableHitCircle
     {
+        public new SliderHeadCircle HitObject => (SliderHeadCircle)base.HitObject;
+
         [CanBeNull]
         public Slider Slider => DrawableSlider?.HitObject;
 
         protected DrawableSlider DrawableSlider => (DrawableSlider)ParentHitObject;
 
+        public override bool DisplayResult => HitObject?.JudgeAsNormalHitCircle ?? base.DisplayResult;
+
+        /// <summary>
+        /// Makes this <see cref="DrawableSliderHead"/> track the follow circle when the start time is reached.
+        /// If <c>false</c>, this <see cref="DrawableSliderHead"/> will be pinned to its initial position in the slider.
+        /// </summary>
+        public bool TrackFollowCircle = true;
+
         private readonly IBindable<int> pathVersion = new Bindable<int>();
 
         protected override OsuSkinComponents CirclePieceComponent => OsuSkinComponents.SliderHeadHitCircle;
@@ -59,12 +70,28 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             base.Update();
 
             Debug.Assert(Slider != null);
+            Debug.Assert(HitObject != null);
 
-            double completionProgress = Math.Clamp((Time.Current - Slider.StartTime) / Slider.Duration, 0, 1);
+            if (TrackFollowCircle)
+            {
+                double completionProgress = Math.Clamp((Time.Current - Slider.StartTime) / Slider.Duration, 0, 1);
 
-            //todo: we probably want to reconsider this before adding scoring, but it looks and feels nice.
+                //todo: we probably want to reconsider this before adding scoring, but it looks and feels nice.
-            if (!IsHit)
+                if (!IsHit)
-                Position = Slider.CurvePositionAt(completionProgress);
+                    Position = Slider.CurvePositionAt(completionProgress);
+            }
+        }
+
+        protected override HitResult ResultFor(double timeOffset)
+        {
+            Debug.Assert(HitObject != null);
+
+            if (HitObject.JudgeAsNormalHitCircle)
+                return base.ResultFor(timeOffset);
+
+            // If not judged as a normal hitcircle, judge as a slider tick instead. This is the classic osu!stable scoring.
+            var result = base.ResultFor(timeOffset);
+            return result.IsHit() ? HitResult.LargeTickHit : HitResult.LargeTickMiss;
         }
 
         public Action<double> OnShake;

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

@@ -244,7 +244,14 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
             base.Update();
 
             if (HandleUserInput)
-                RotationTracker.Tracking = !Result.HasResult && (OsuActionInputManager?.PressedActions.Any(x => x == OsuAction.LeftButton || x == OsuAction.RightButton) ?? false);
+            {
+                bool isValidSpinningTime = Time.Current >= HitObject.StartTime && Time.Current <= HitObject.EndTime;
+                bool correctButtonPressed = (OsuActionInputManager?.PressedActions.Any(x => x == OsuAction.LeftButton || x == OsuAction.RightButton) ?? false);
+
+                RotationTracker.Tracking = !Result.HasResult
+                                           && correctButtonPressed
+                                           && isValidSpinningTime;
+            }
 
             if (spinningSample != null && spinnerFrequencyModulate)
                 spinningSample.Frequency.Value = spinning_sample_modulated_base_frequency + Progress;
@@ -256,6 +263,7 @@ namespace osu.Game.Rulesets.Osu.Objects.Drawables
 
             if (!SpmCounter.IsPresent && RotationTracker.Tracking)
                 SpmCounter.FadeIn(HitObject.TimeFadeIn);
+
             SpmCounter.SetRotation(Result.RateAdjustedRotation);
 
             updateBonusScore();

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

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using System.Linq;
 using osu.Framework.Bindables;
 using osu.Game.Beatmaps;
@@ -25,6 +26,11 @@ namespace osu.Game.Rulesets.Osu.Objects
         /// </summary>
         internal const float BASE_SCORING_DISTANCE = 100;
 
+        /// <summary>
+        /// Minimum preempt time at AR=10.
+        /// </summary>
+        public const double PREEMPT_MIN = 450;
+
         public double TimePreempt = 600;
         public double TimeFadeIn = 400;
 
@@ -112,8 +118,13 @@ namespace osu.Game.Rulesets.Osu.Objects
         {
             base.ApplyDefaultsToSelf(controlPointInfo, difficulty);
 
-            TimePreempt = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1800, 1200, 450);
+            TimePreempt = (float)BeatmapDifficulty.DifficultyRange(difficulty.ApproachRate, 1800, 1200, PREEMPT_MIN);
-            TimeFadeIn = 400; // as per osu-stable
+
+            // Preempt time can go below 450ms. Normally, this is achieved via the DT mod which uniformly speeds up all animations game wide regardless of AR.
+            // This uniform speedup is hard to match 1:1, however we can at least make AR>10 (via mods) feel good by extending the upper linear function above.
+            // Note that this doesn't exactly match the AR>10 visuals as they're classically known, but it feels good.
+            // This adjustment is necessary for AR>10, otherwise TimePreempt can become smaller leading to hitcircles not fully fading in.
+            TimeFadeIn = 400 * Math.Min(1, TimePreempt / PREEMPT_MIN);
 
             Scale = (1.0f - 0.7f * (difficulty.CircleSize - 5) / 5) / 2;
         }

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

@@ -114,8 +114,14 @@ namespace osu.Game.Rulesets.Osu.Objects
         /// </summary>
         public double TickDistanceMultiplier = 1;
 
+        /// <summary>
+        /// Whether this <see cref="Slider"/>'s judgement is fully handled by its nested <see cref="HitObject"/>s.
+        /// If <c>false</c>, this <see cref="Slider"/> will be judged proportionally to the number of nested <see cref="HitObject"/>s hit.
+        /// </summary>
+        public bool OnlyJudgeNestedObjects = true;
+
         [JsonIgnore]
-        public HitCircle HeadCircle { get; protected set; }
+        public SliderHeadCircle HeadCircle { get; protected set; }
 
         [JsonIgnore]
         public SliderTailCircle TailCircle { get; protected set; }
@@ -140,7 +146,8 @@ namespace osu.Game.Rulesets.Osu.Objects
 
             // The samples should be attached to the slider tail, however this can only be done after LegacyLastTick is removed otherwise they would play earlier than they're intended to.
             // For now, the samples are attached to and played by the slider itself at the correct end time.
-            Samples = this.GetNodeSamples(repeatCount + 1);
+            // ToArray call is required as GetNodeSamples may fallback to Samples itself (without it it will get cleared due to the list reference being live).
+            Samples = this.GetNodeSamples(repeatCount + 1).ToArray();
         }
 
         protected override void CreateNestedHitObjects(CancellationToken cancellationToken)
@@ -233,7 +240,7 @@ namespace osu.Game.Rulesets.Osu.Objects
                 HeadCircle.Samples = this.GetNodeSamples(0);
         }
 
-        public override Judgement CreateJudgement() => new OsuIgnoreJudgement();
+        public override Judgement CreateJudgement() => OnlyJudgeNestedObjects ? new OsuIgnoreJudgement() : new OsuJudgement();
 
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
     }

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

@@ -1,9 +1,19 @@
 // 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.Judgements;
+using osu.Game.Rulesets.Osu.Judgements;
+
 namespace osu.Game.Rulesets.Osu.Objects
 {
     public class SliderHeadCircle : HitCircle
     {
+        /// <summary>
+        /// Whether to treat this <see cref="SliderHeadCircle"/> as a normal <see cref="HitCircle"/> for judgement purposes.
+        /// If <c>false</c>, this <see cref="SliderHeadCircle"/> will be judged as a <see cref="SliderTick"/> instead.
+        /// </summary>
+        public bool JudgeAsNormalHitCircle = true;
+
+        public override Judgement CreateJudgement() => JudgeAsNormalHitCircle ? base.CreateJudgement() : new SliderTickJudgement();
     }
 }

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

@@ -33,10 +33,5 @@ namespace osu.Game.Rulesets.Osu.Objects
         protected override HitWindows CreateHitWindows() => HitWindows.Empty;
 
         public override Judgement CreateJudgement() => new SliderTickJudgement();
-
-        public class SliderTickJudgement : OsuJudgement
-        {
-            public override HitResult MaxResult => HitResult.LargeTickHit;
-        }
     }
 }

osu.Game.Rulesets.Osu/OsuInputManager.cs

@@ -34,7 +34,7 @@ namespace osu.Game.Rulesets.Osu
 
         protected override bool Handle(UIEvent e)
         {
-            if (e is MouseMoveEvent && !AllowUserCursorMovement) return false;
+            if ((e is MouseMoveEvent || e is TouchMoveEvent) && !AllowUserCursorMovement) return false;
 
             return base.Handle(e);
         }

osu.Game.Rulesets.Osu/OsuRuleset.cs

@@ -163,6 +163,7 @@ namespace osu.Game.Rulesets.Osu
                     {
                         new OsuModTarget(),
                         new OsuModDifficultyAdjust(),
+                        new OsuModClassic()
                     };
 
                 case ModType.Automation:

osu.Game.Rulesets.Osu/Replays/OsuAutoGenerator.cs

@@ -6,10 +6,12 @@ using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Osu.Objects;
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using osu.Framework.Graphics;
 using osu.Game.Replays;
+using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Osu.Beatmaps;
 using osu.Game.Rulesets.Osu.Scoring;
@@ -33,11 +35,6 @@ namespace osu.Game.Rulesets.Osu.Replays
 
         #region Constants
 
-        /// <summary>
-        /// The "reaction time" in ms between "seeing" a new hit object and moving to "react" to it.
-        /// </summary>
-        private readonly double reactionTime;
-
         private readonly HitWindows defaultHitWindows;
 
         /// <summary>
@@ -49,12 +46,9 @@ namespace osu.Game.Rulesets.Osu.Replays
 
         #region Construction / Initialisation
 
-        public OsuAutoGenerator(IBeatmap beatmap)
+        public OsuAutoGenerator(IBeatmap beatmap, IReadOnlyList<Mod> mods)
-            : base(beatmap)
+            : base(beatmap, mods)
         {
-            // Already superhuman, but still somewhat realistic
-            reactionTime = ApplyModsToRate(100);
-
             defaultHitWindows = new OsuHitWindows();
             defaultHitWindows.SetDifficulty(Beatmap.BeatmapInfo.BaseDifficulty.OverallDifficulty);
         }
@@ -240,7 +234,7 @@ namespace osu.Game.Rulesets.Osu.Replays
             OsuReplayFrame lastFrame = (OsuReplayFrame)Frames[^1];
 
             // Wait until Auto could "see and react" to the next note.
-            double waitTime = h.StartTime - Math.Max(0.0, h.TimePreempt - reactionTime);
+            double waitTime = h.StartTime - Math.Max(0.0, h.TimePreempt - getReactionTime(h.StartTime - h.TimePreempt));
 
             if (waitTime > lastFrame.Time)
             {
@@ -250,7 +244,7 @@ namespace osu.Game.Rulesets.Osu.Replays
 
             Vector2 lastPosition = lastFrame.Position;
 
-            double timeDifference = ApplyModsToTime(h.StartTime - lastFrame.Time);
+            double timeDifference = ApplyModsToTimeDelta(lastFrame.Time, h.StartTime);
 
             // Only "snap" to hitcircles if they are far enough apart. As the time between hitcircles gets shorter the snapping threshold goes up.
             if (timeDifference > 0 && // Sanity checks
@@ -258,7 +252,7 @@ namespace osu.Game.Rulesets.Osu.Replays
                  timeDifference >= 266)) // ... or the beats are slow enough to tap anyway.
             {
                 // Perform eased movement
-                for (double time = lastFrame.Time + FrameDelay; time < h.StartTime; time += FrameDelay)
+                for (double time = lastFrame.Time + GetFrameDelay(lastFrame.Time); time < h.StartTime; time += GetFrameDelay(time))
                 {
                     Vector2 currentPosition = Interpolation.ValueAt(time, lastPosition, targetPos, lastFrame.Time, h.StartTime, easing);
                     AddFrameToReplay(new OsuReplayFrame((int)time, new Vector2(currentPosition.X, currentPosition.Y)) { Actions = lastFrame.Actions });
@@ -272,6 +266,14 @@ namespace osu.Game.Rulesets.Osu.Replays
             }
         }
 
+        /// <summary>
+        /// Calculates the "reaction time" in ms between "seeing" a new hit object and moving to "react" to it.
+        /// </summary>
+        /// <remarks>
+        /// Already superhuman, but still somewhat realistic.
+        /// </remarks>
+        private double getReactionTime(double timeInstant) => ApplyModsToRate(timeInstant, 100);
+
         // Add frames to click the hitobject
         private void addHitObjectClickFrames(OsuHitObject h, Vector2 startPosition, float spinnerDirection)
         {
@@ -341,17 +343,23 @@ namespace osu.Game.Rulesets.Osu.Replays
                     float angle = radius == 0 ? 0 : MathF.Atan2(difference.Y, difference.X);
 
                     double t;
+                    double previousFrame = h.StartTime;
 
-                    for (double j = h.StartTime + FrameDelay; j < spinner.EndTime; j += FrameDelay)
+                    for (double nextFrame = h.StartTime + GetFrameDelay(h.StartTime); nextFrame < spinner.EndTime; nextFrame += GetFrameDelay(nextFrame))
                     {
-                        t = ApplyModsToTime(j - h.StartTime) * spinnerDirection;
+                        t = ApplyModsToTimeDelta(previousFrame, nextFrame) * spinnerDirection;
+                        angle += (float)t / 20;
 
-                        Vector2 pos = SPINNER_CENTRE + CirclePosition(t / 20 + angle, SPIN_RADIUS);
+                        Vector2 pos = SPINNER_CENTRE + CirclePosition(angle, SPIN_RADIUS);
-                        AddFrameToReplay(new OsuReplayFrame((int)j, new Vector2(pos.X, pos.Y), action));
+                        AddFrameToReplay(new OsuReplayFrame((int)nextFrame, new Vector2(pos.X, pos.Y), action));
+
+                        previousFrame = nextFrame;
                     }
 
-                    t = ApplyModsToTime(spinner.EndTime - h.StartTime) * spinnerDirection;
+                    t = ApplyModsToTimeDelta(previousFrame, spinner.EndTime) * spinnerDirection;
-                    Vector2 endPosition = SPINNER_CENTRE + CirclePosition(t / 20 + angle, SPIN_RADIUS);
+                    angle += (float)t / 20;
+
+                    Vector2 endPosition = SPINNER_CENTRE + CirclePosition(angle, SPIN_RADIUS);
 
                     AddFrameToReplay(new OsuReplayFrame(spinner.EndTime, new Vector2(endPosition.X, endPosition.Y), action));
 
@@ -359,7 +367,7 @@ namespace osu.Game.Rulesets.Osu.Replays
                     break;
 
                 case Slider slider:
-                    for (double j = FrameDelay; j < slider.Duration; j += FrameDelay)
+                    for (double j = GetFrameDelay(slider.StartTime); j < slider.Duration; j += GetFrameDelay(slider.StartTime + j))
                     {
                         Vector2 pos = slider.StackedPositionAt(j / slider.Duration);
                         AddFrameToReplay(new OsuReplayFrame(h.StartTime + j, new Vector2(pos.X, pos.Y), action));

osu.Game.Rulesets.Osu/Replays/OsuAutoGeneratorBase.cs

@@ -5,7 +5,9 @@ using osuTK;
 using osu.Game.Beatmaps;
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using osu.Game.Replays;
+using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Rulesets.Replays;
 
@@ -22,33 +24,61 @@ namespace osu.Game.Rulesets.Osu.Replays
 
         public const float SPIN_RADIUS = 50;
 
-        /// <summary>
-        /// The time in ms between each ReplayFrame.
-        /// </summary>
-        protected readonly double FrameDelay;
-
         #endregion
 
         #region Construction / Initialisation
 
         protected Replay Replay;
         protected List<ReplayFrame> Frames => Replay.Frames;
+        private readonly IReadOnlyList<IApplicableToRate> timeAffectingMods;
 
-        protected OsuAutoGeneratorBase(IBeatmap beatmap)
+        protected OsuAutoGeneratorBase(IBeatmap beatmap, IReadOnlyList<Mod> mods)
             : base(beatmap)
         {
             Replay = new Replay();
 
-            // We are using ApplyModsToRate and not ApplyModsToTime to counteract the speed up / slow down from HalfTime / DoubleTime so that we remain at a constant framerate of 60 fps.
+            timeAffectingMods = mods.OfType<IApplicableToRate>().ToList();
-            FrameDelay = ApplyModsToRate(1000.0 / 60.0);
         }
 
         #endregion
 
         #region Utilities
 
-        protected double ApplyModsToTime(double v) => v;
+        /// <summary>
-        protected double ApplyModsToRate(double v) => v;
+        /// Returns the real duration of time between <paramref name="startTime"/> and <paramref name="endTime"/>
+        /// after applying rate-affecting mods.
+        /// </summary>
+        /// <remarks>
+        /// This method should only be used when <paramref name="startTime"/> and <paramref name="endTime"/> are very close.
+        /// That is because the track rate might be changing with time,
+        /// and the method used here is a rough instantaneous approximation.
+        /// </remarks>
+        /// <param name="startTime">The start time of the time delta, in original track time.</param>
+        /// <param name="endTime">The end time of the time delta, in original track time.</param>
+        protected double ApplyModsToTimeDelta(double startTime, double endTime)
+        {
+            double delta = endTime - startTime;
+
+            foreach (var mod in timeAffectingMods)
+                delta /= mod.ApplyToRate(startTime);
+
+            return delta;
+        }
+
+        protected double ApplyModsToRate(double time, double rate)
+        {
+            foreach (var mod in timeAffectingMods)
+                rate = mod.ApplyToRate(time, rate);
+            return rate;
+        }
+
+        /// <summary>
+        /// Calculates the interval after which the next <see cref="ReplayFrame"/> should be generated,
+        /// in milliseconds.
+        /// </summary>
+        /// <param name="time">The time of the previous frame.</param>
+        protected double GetFrameDelay(double time)
+            => ApplyModsToRate(time, 1000.0 / 60);
 
         private class ReplayFrameComparer : IComparer<ReplayFrame>
         {

osu.Game.Rulesets.Osu/Skinning/Default/PlaySliderBody.cs

@@ -21,6 +21,8 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
         [Resolved(CanBeNull = true)]
         private OsuRulesetConfigManager config { get; set; }
 
+        private readonly Bindable<bool> configSnakingOut = new Bindable<bool>();
+
         [BackgroundDependencyLoader]
         private void load(ISkinSource skin, DrawableHitObject drawableObject)
         {
@@ -36,10 +38,28 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
             accentColour.BindValueChanged(accent => updateAccentColour(skin, accent.NewValue), true);
 
             config?.BindWith(OsuRulesetSetting.SnakingInSliders, SnakingIn);
-            config?.BindWith(OsuRulesetSetting.SnakingOutSliders, SnakingOut);
+            config?.BindWith(OsuRulesetSetting.SnakingOutSliders, configSnakingOut);
+
+            SnakingOut.BindTo(configSnakingOut);
 
             BorderSize = skin.GetConfig<OsuSkinConfiguration, float>(OsuSkinConfiguration.SliderBorderSize)?.Value ?? 1;
             BorderColour = skin.GetConfig<OsuSkinColour, Color4>(OsuSkinColour.SliderBorder)?.Value ?? Color4.White;
+
+            drawableObject.HitObjectApplied += onHitObjectApplied;
+        }
+
+        private void onHitObjectApplied(DrawableHitObject obj)
+        {
+            var drawableSlider = (DrawableSlider)obj;
+            if (drawableSlider.HitObject == null)
+                return;
+
+            // When not tracking the follow circle, unbind from the config and forcefully disable snaking out - it looks better that way.
+            if (!drawableSlider.HeadCircle.TrackFollowCircle)
+            {
+                SnakingOut.UnbindFrom(configSnakingOut);
+                SnakingOut.Value = false;
+            }
         }
 
         private void updateAccentColour(ISkinSource skin, Color4 defaultAccentColour)

osu.Game.Rulesets.Osu/Skinning/Default/SliderBall.cs

@@ -31,6 +31,12 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
             set => ball.Colour = value;
         }
 
+        /// <summary>
+        /// Whether to track accurately to the visual size of this <see cref="SliderBall"/>.
+        /// If <c>false</c>, tracking will be performed at the final scale at all times.
+        /// </summary>
+        public bool InputTracksVisualSize = true;
+
         private readonly Drawable followCircle;
         private readonly DrawableSlider drawableSlider;
         private readonly Drawable ball;
@@ -94,7 +100,14 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
 
                 tracking = value;
 
-                followCircle.ScaleTo(tracking ? 2.4f : 1f, 300, Easing.OutQuint);
+                if (InputTracksVisualSize)
+                    followCircle.ScaleTo(tracking ? 2.4f : 1f, 300, Easing.OutQuint);
+                else
+                {
+                    // We need to always be tracking the final size, at both endpoints. For now, this is achieved by removing the scale duration.
+                    followCircle.ScaleTo(tracking ? 2.4f : 1f);
+                }
+
                 followCircle.FadeTo(tracking ? 1f : 0, 300, Easing.OutQuint);
             }
         }

osu.Game.Rulesets.Osu/Skinning/Default/SpinnerSpmCounter.cs

@@ -4,16 +4,21 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Utils;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Sprites;
+using osu.Game.Rulesets.Objects.Drawables;
 
 namespace osu.Game.Rulesets.Osu.Skinning.Default
 {
     public class SpinnerSpmCounter : Container
     {
+        [Resolved]
+        private DrawableHitObject drawableSpinner { get; set; }
+
         private readonly OsuSpriteText spmText;
 
         public SpinnerSpmCounter()
@@ -38,6 +43,12 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
             };
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+            drawableSpinner.HitObjectApplied += resetState;
+        }
+
         private double spm;
 
         public double SpinsPerMinute
@@ -82,5 +93,19 @@ namespace osu.Game.Rulesets.Osu.Skinning.Default
 
             records.Enqueue(new RotationRecord { Rotation = currentRotation, Time = Time.Current });
         }
+
+        private void resetState(DrawableHitObject hitObject)
+        {
+            SpinsPerMinute = 0;
+            records.Clear();
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (drawableSpinner != null)
+                drawableSpinner.HitObjectApplied -= resetState;
+        }
     }
 }

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

@@ -0,0 +1,31 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Osu.UI
+{
+    public interface IHitPolicy
+    {
+        /// <summary>
+        /// The <see cref="IHitObjectContainer"/> containing the <see cref="DrawableHitObject"/>s which this <see cref="IHitPolicy"/> applies to.
+        /// </summary>
+        IHitObjectContainer HitObjectContainer { set; }
+
+        /// <summary>
+        /// Determines whether a <see cref="DrawableHitObject"/> can be hit at a point in time.
+        /// </summary>
+        /// <param name="hitObject">The <see cref="DrawableHitObject"/> to check.</param>
+        /// <param name="time">The time to check.</param>
+        /// <returns>Whether <paramref name="hitObject"/> can be hit at the given <paramref name="time"/>.</returns>
+        bool IsHittable(DrawableHitObject hitObject, double time);
+
+        /// <summary>
+        /// Handles a <see cref="HitObject"/> being hit.
+        /// </summary>
+        /// <param name="hitObject">The <see cref="HitObject"/> that was hit.</param>
+        void HandleHit(DrawableHitObject hitObject);
+    }
+}

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

@@ -0,0 +1,54 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.Osu.Objects.Drawables;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Osu.UI
+{
+    /// <summary>
+    /// Ensures that <see cref="HitObject"/>s are hit in order of appearance. The classic note lock.
+    /// <remarks>
+    /// Hits will be blocked until the previous <see cref="HitObject"/>s have been judged.
+    /// </remarks>
+    /// </summary>
+    public class ObjectOrderedHitPolicy : IHitPolicy
+    {
+        public IHitObjectContainer HitObjectContainer { get; set; }
+
+        public bool IsHittable(DrawableHitObject hitObject, double time) => enumerateHitObjectsUpTo(hitObject.HitObject.StartTime).All(obj => obj.AllJudged);
+
+        public void HandleHit(DrawableHitObject hitObject)
+        {
+        }
+
+        private IEnumerable<DrawableHitObject> enumerateHitObjectsUpTo(double targetTime)
+        {
+            foreach (var obj in HitObjectContainer.AliveObjects)
+            {
+                if (obj.HitObject.StartTime >= targetTime)
+                    yield break;
+
+                switch (obj)
+                {
+                    case DrawableSpinner _:
+                        continue;
+
+                    case DrawableSlider slider:
+                        yield return slider.HeadCircle;
+
+                        break;
+
+                    default:
+                        yield return obj;
+
+                        break;
+                }
+            }
+        }
+    }
+}

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

@@ -31,7 +31,6 @@ namespace osu.Game.Rulesets.Osu.UI
         private readonly ProxyContainer spinnerProxies;
         private readonly JudgementContainer<DrawableOsuJudgement> judgementLayer;
         private readonly FollowPointRenderer followPoints;
-        private readonly OrderedHitPolicy hitPolicy;
 
         public static readonly Vector2 BASE_SIZE = new Vector2(512, 384);
 
@@ -54,10 +53,9 @@ namespace osu.Game.Rulesets.Osu.UI
                 approachCircles = new ProxyContainer { RelativeSizeAxes = Axes.Both },
             };
 
-            hitPolicy = new OrderedHitPolicy(HitObjectContainer);
+            HitPolicy = new StartTimeOrderedHitPolicy();
 
             var hitWindows = new OsuHitWindows();
-
             foreach (var result in Enum.GetValues(typeof(HitResult)).OfType<HitResult>().Where(r => r > HitResult.None && hitWindows.IsHitResultAllowed(r)))
                 poolDictionary.Add(result, new DrawableJudgementPool(result, onJudgmentLoaded));
 
@@ -66,6 +64,18 @@ namespace osu.Game.Rulesets.Osu.UI
             NewResult += onNewResult;
         }
 
+        private IHitPolicy hitPolicy;
+
+        public IHitPolicy HitPolicy
+        {
+            get => hitPolicy;
+            set
+            {
+                hitPolicy = value ?? throw new ArgumentNullException(nameof(value));
+                hitPolicy.HitObjectContainer = HitObjectContainer;
+            }
+        }
+
         protected override void OnNewDrawableHitObject(DrawableHitObject drawable)
         {
             ((DrawableOsuHitObject)drawable).CheckHittable = hitPolicy.IsHittable;

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

@@ -11,28 +11,17 @@ using osu.Game.Rulesets.UI;
 namespace osu.Game.Rulesets.Osu.UI
 {
     /// <summary>
-    /// Ensures that <see cref="HitObject"/>s are hit in-order. Affectionately known as "note lock".
+    /// Ensures that <see cref="HitObject"/>s are hit in-order of their start times. Affectionately known as "note lock".
     /// If a <see cref="HitObject"/> is hit out of order:
     /// <list type="number">
     /// <item><description>The hit is blocked if it occurred earlier than the previous <see cref="HitObject"/>'s start time.</description></item>
     /// <item><description>The hit causes all previous <see cref="HitObject"/>s to missed otherwise.</description></item>
     /// </list>
     /// </summary>
-    public class OrderedHitPolicy
+    public class StartTimeOrderedHitPolicy : IHitPolicy
     {
-        private readonly HitObjectContainer hitObjectContainer;
+        public IHitObjectContainer HitObjectContainer { get; set; }
 
-        public OrderedHitPolicy(HitObjectContainer hitObjectContainer)
-        {
-            this.hitObjectContainer = hitObjectContainer;
-        }
-
-        /// <summary>
-        /// Determines whether a <see cref="DrawableHitObject"/> can be hit at a point in time.
-        /// </summary>
-        /// <param name="hitObject">The <see cref="DrawableHitObject"/> to check.</param>
-        /// <param name="time">The time to check.</param>
-        /// <returns>Whether <paramref name="hitObject"/> can be hit at the given <paramref name="time"/>.</returns>
         public bool IsHittable(DrawableHitObject hitObject, double time)
         {
             DrawableHitObject blockingObject = null;
@@ -54,10 +43,6 @@ namespace osu.Game.Rulesets.Osu.UI
             return blockingObject.Judged || time >= blockingObject.HitObject.StartTime;
         }
 
-        /// <summary>
-        /// Handles a <see cref="HitObject"/> being hit to potentially miss all earlier <see cref="HitObject"/>s.
-        /// </summary>
-        /// <param name="hitObject">The <see cref="HitObject"/> that was hit.</param>
         public void HandleHit(DrawableHitObject hitObject)
         {
             // Hitobjects which themselves don't block future hitobjects don't cause misses (e.g. slider ticks, spinners).
@@ -67,6 +52,7 @@ namespace osu.Game.Rulesets.Osu.UI
             if (!IsHittable(hitObject, hitObject.HitObject.StartTime + hitObject.Result.TimeOffset))
                 throw new InvalidOperationException($"A {hitObject} was hit before it became hittable!");
 
+            // Miss all hitobjects prior to the hit one.
             foreach (var obj in enumerateHitObjectsUpTo(hitObject.HitObject.StartTime))
             {
                 if (obj.Judged)
@@ -86,7 +72,7 @@ namespace osu.Game.Rulesets.Osu.UI
 
         private IEnumerable<DrawableHitObject> enumerateHitObjectsUpTo(double targetTime)
         {
-            foreach (var obj in hitObjectContainer.AliveObjects)
+            foreach (var obj in HitObjectContainer.AliveObjects)
             {
                 if (obj.HitObject.StartTime >= targetTime)
                     yield break;

osu.Game.Rulesets.Taiko.Tests/.vscode/launch.json

@@ -7,7 +7,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Debug/netcoreapp3.1/osu.Game.Rulesets.Taiko.Tests.dll"
+                "${workspaceRoot}/bin/Debug/net5.0/osu.Game.Rulesets.Taiko.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Debug)",
@@ -20,7 +20,7 @@
             "request": "launch",
             "program": "dotnet",
             "args": [
-                "${workspaceRoot}/bin/Release/netcoreapp3.1/osu.Game.Rulesets.Taiko.Tests.dll"
+                "${workspaceRoot}/bin/Release/net5.0/osu.Game.Rulesets.Taiko.Tests.dll"
             ],
             "cwd": "${workspaceRoot}",
             "preLaunchTask": "Build (Release)",

osu.Game.Rulesets.Taiko/Mods/TaikoModAutoplay.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.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Taiko.Objects;
@@ -12,7 +13,7 @@ namespace osu.Game.Rulesets.Taiko.Mods
 {
     public class TaikoModAutoplay : ModAutoplay<TaikoHitObject>
     {
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "mekkadosu!" } },
             Replay = new TaikoAutoGenerator(beatmap).Generate(),

osu.Game.Rulesets.Taiko/Mods/TaikoModCinema.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.Collections.Generic;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Taiko.Objects;
@@ -12,7 +13,7 @@ namespace osu.Game.Rulesets.Taiko.Mods
 {
     public class TaikoModCinema : ModCinema<TaikoHitObject>
     {
-        public override Score CreateReplayScore(IBeatmap beatmap) => new Score
+        public override Score CreateReplayScore(IBeatmap beatmap, IReadOnlyList<Mod> mods) => new Score
         {
             ScoreInfo = new ScoreInfo { User = new User { Username = "mekkadosu!" } },
             Replay = new TaikoAutoGenerator(beatmap).Generate(),

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

@@ -1,11 +1,45 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System.Linq;
+using osu.Framework.Bindables;
+using osu.Game.Beatmaps;
+using osu.Game.Configuration;
 using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Taiko.Mods
 {
     public class TaikoModDifficultyAdjust : ModDifficultyAdjust
     {
+        [SettingSource("Scroll Speed", "Adjust a beatmap's set scroll speed", LAST_SETTING_ORDER + 1)]
+        public BindableNumber<float> ScrollSpeed { get; } = new BindableFloat
+        {
+            Precision = 0.05f,
+            MinValue = 0.25f,
+            MaxValue = 4,
+            Default = 1,
+            Value = 1,
+        };
+
+        public override string SettingDescription
+        {
+            get
+            {
+                string scrollSpeed = ScrollSpeed.IsDefault ? string.Empty : $"Scroll x{ScrollSpeed.Value:N1}";
+
+                return string.Join(", ", new[]
+                {
+                    base.SettingDescription,
+                    scrollSpeed
+                }.Where(s => !string.IsNullOrEmpty(s)));
+            }
+        }
+
+        protected override void ApplySettings(BeatmapDifficulty difficulty)
+        {
+            base.ApplySettings(difficulty);
+
+            ApplySetting(ScrollSpeed, scroll => difficulty.SliderMultiplier *= scroll);
+        }
     }
 }

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

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Taiko.Mods
@@ -8,5 +9,16 @@ namespace osu.Game.Rulesets.Taiko.Mods
     public class TaikoModEasy : ModEasy
     {
         public override string Description => @"Beats move slower, and less accuracy required!";
+
+        /// <summary>
+        /// Multiplier factor added to the scrolling speed.
+        /// </summary>
+        private const double slider_multiplier = 0.8;
+
+        public override void ApplyToDifficulty(BeatmapDifficulty difficulty)
+        {
+            base.ApplyToDifficulty(difficulty);
+            difficulty.SliderMultiplier *= slider_multiplier;
+        }
     }
 }

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

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Mods;
 
 namespace osu.Game.Rulesets.Taiko.Mods
@@ -9,5 +10,21 @@ namespace osu.Game.Rulesets.Taiko.Mods
     {
         public override double ScoreMultiplier => 1.06;
         public override bool Ranked => true;
+
+        /// <summary>
+        /// Multiplier factor added to the scrolling speed.
+        /// </summary>
+        /// <remarks>
+        /// This factor is made up of two parts: the base part (1.4) and the aspect ratio adjustment (4/3).
+        /// Stable applies the latter by dividing the width of the user's display by the width of a display with the same height, but 4:3 aspect ratio.
+        /// TODO: Revisit if taiko playfield ever changes away from a hard-coded 16:9 (see https://github.com/ppy/osu/issues/5685).
+        /// </remarks>
+        private const double slider_multiplier = 1.4 * 4 / 3;
+
+        public override void ApplyToDifficulty(BeatmapDifficulty difficulty)
+        {
+            base.ApplyToDifficulty(difficulty);
+            difficulty.SliderMultiplier *= slider_multiplier;
+        }
     }
 }

osu.Game.Tests.Android/osu.Game.Tests.Android.csproj

@@ -69,5 +69,9 @@
       <Name>osu.Game</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup Label="Package References">
+    <PackageReference Include="DeepEqual" Version="2.0.0" />
+    <PackageReference Include="Moq" Version="4.16.0" />
+  </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
 </Project>

osu.Game.Tests.iOS/osu.Game.Tests.iOS.csproj

@@ -45,6 +45,7 @@
   </ItemGroup>
   <ItemGroup Label="Package References">
     <PackageReference Include="DeepEqual" Version="2.0.0" />
+    <PackageReference Include="Moq" Version="4.16.0" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
 </Project>

osu.Game.Tests/Beatmaps/Formats/LegacyStoryboardDecoderTest.cs

@@ -129,5 +129,25 @@ namespace osu.Game.Tests.Beatmaps.Formats
                 Assert.AreEqual(3456, ((StoryboardSprite)background.Elements.Single()).InitialPosition.X);
             }
         }
+
+        [Test]
+        public void TestDecodeOutOfRangeLoopAnimationType()
+        {
+            var decoder = new LegacyStoryboardDecoder();
+
+            using (var resStream = TestResources.OpenResource("animation-types.osb"))
+            using (var stream = new LineBufferedReader(resStream))
+            {
+                var storyboard = decoder.Decode(stream);
+
+                StoryboardLayer foreground = storyboard.Layers.Single(l => l.Depth == 0);
+                Assert.AreEqual(AnimationLoopType.LoopForever, ((StoryboardAnimation)foreground.Elements[0]).LoopType);
+                Assert.AreEqual(AnimationLoopType.LoopOnce, ((StoryboardAnimation)foreground.Elements[1]).LoopType);
+                Assert.AreEqual(AnimationLoopType.LoopForever, ((StoryboardAnimation)foreground.Elements[2]).LoopType);
+                Assert.AreEqual(AnimationLoopType.LoopOnce, ((StoryboardAnimation)foreground.Elements[3]).LoopType);
+                Assert.AreEqual(AnimationLoopType.LoopForever, ((StoryboardAnimation)foreground.Elements[4]).LoopType);
+                Assert.AreEqual(AnimationLoopType.LoopForever, ((StoryboardAnimation)foreground.Elements[5]).LoopType);
+            }
+        }
     }
 }

osu.Game.Tests/Chat/MessageFormatterTests.cs

@@ -21,6 +21,25 @@ namespace osu.Game.Tests.Chat
             Assert.AreEqual(36, result.Links[0].Length);
         }
 
+        [TestCase(LinkAction.OpenBeatmap, "456", "https://osu.ppy.sh/beatmapsets/123#osu/456")]
+        [TestCase(LinkAction.OpenBeatmap, "456", "https://osu.ppy.sh/beatmapsets/123#osu/456?whatever")]
+        [TestCase(LinkAction.OpenBeatmap, "456", "https://osu.ppy.sh/beatmapsets/123/456")]
+        [TestCase(LinkAction.External, null, "https://osu.ppy.sh/beatmapsets/abc/def")]
+        [TestCase(LinkAction.OpenBeatmapSet, "123", "https://osu.ppy.sh/beatmapsets/123")]
+        [TestCase(LinkAction.OpenBeatmapSet, "123", "https://osu.ppy.sh/beatmapsets/123/whatever")]
+        [TestCase(LinkAction.External, null, "https://osu.ppy.sh/beatmapsets/abc")]
+        public void TestBeatmapLinks(LinkAction expectedAction, string expectedArg, string link)
+        {
+            Message result = MessageFormatter.FormatMessage(new Message { Content = link });
+
+            Assert.AreEqual(result.Content, result.DisplayContent);
+            Assert.AreEqual(1, result.Links.Count);
+            Assert.AreEqual(expectedAction, result.Links[0].Action);
+            Assert.AreEqual(expectedArg, result.Links[0].Argument);
+            if (expectedAction == LinkAction.External)
+                Assert.AreEqual(link, result.Links[0].Url);
+        }
+
         [Test]
         public void TestMultipleComplexLinks()
         {

osu.Game.Tests/Mods/ModUtilsTest.cs

@@ -0,0 +1,160 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Linq;
+using Moq;
+using NUnit.Framework;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Utils;
+
+namespace osu.Game.Tests.Mods
+{
+    [TestFixture]
+    public class ModUtilsTest
+    {
+        [Test]
+        public void TestModIsCompatibleByItself()
+        {
+            var mod = new Mock<CustomMod1>();
+            Assert.That(ModUtils.CheckCompatibleSet(new[] { mod.Object }));
+        }
+
+        [Test]
+        public void TestIncompatibleThroughTopLevel()
+        {
+            var mod1 = new Mock<CustomMod1>();
+            var mod2 = new Mock<CustomMod2>();
+
+            mod1.Setup(m => m.IncompatibleMods).Returns(new[] { mod2.Object.GetType() });
+
+            // Test both orderings.
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod1.Object, mod2.Object }), Is.False);
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod2.Object, mod1.Object }), Is.False);
+        }
+
+        [Test]
+        public void TestMultiModIncompatibleWithTopLevel()
+        {
+            var mod1 = new Mock<CustomMod1>();
+
+            // The nested mod.
+            var mod2 = new Mock<CustomMod2>();
+            mod2.Setup(m => m.IncompatibleMods).Returns(new[] { mod1.Object.GetType() });
+
+            var multiMod = new MultiMod(new MultiMod(mod2.Object));
+
+            // Test both orderings.
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { multiMod, mod1.Object }), Is.False);
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod1.Object, multiMod }), Is.False);
+        }
+
+        [Test]
+        public void TestTopLevelIncompatibleWithMultiMod()
+        {
+            // The nested mod.
+            var mod1 = new Mock<CustomMod1>();
+            var multiMod = new MultiMod(new MultiMod(mod1.Object));
+
+            var mod2 = new Mock<CustomMod2>();
+            mod2.Setup(m => m.IncompatibleMods).Returns(new[] { typeof(CustomMod1) });
+
+            // Test both orderings.
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { multiMod, mod2.Object }), Is.False);
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod2.Object, multiMod }), Is.False);
+        }
+
+        [Test]
+        public void TestCompatibleMods()
+        {
+            var mod1 = new Mock<CustomMod1>();
+            var mod2 = new Mock<CustomMod2>();
+
+            // Test both orderings.
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod1.Object, mod2.Object }), Is.True);
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod2.Object, mod1.Object }), Is.True);
+        }
+
+        [Test]
+        public void TestIncompatibleThroughBaseType()
+        {
+            var mod1 = new Mock<CustomMod1>();
+            var mod2 = new Mock<CustomMod2>();
+            mod2.Setup(m => m.IncompatibleMods).Returns(new[] { typeof(Mod) });
+
+            // Test both orderings.
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod1.Object, mod2.Object }), Is.False);
+            Assert.That(ModUtils.CheckCompatibleSet(new Mod[] { mod2.Object, mod1.Object }), Is.False);
+        }
+
+        [Test]
+        public void TestAllowedThroughMostDerivedType()
+        {
+            var mod = new Mock<CustomMod1>();
+            Assert.That(ModUtils.CheckAllowed(new[] { mod.Object }, new[] { mod.Object.GetType() }));
+        }
+
+        [Test]
+        public void TestNotAllowedThroughBaseType()
+        {
+            var mod = new Mock<CustomMod1>();
+            Assert.That(ModUtils.CheckAllowed(new[] { mod.Object }, new[] { typeof(Mod) }), Is.False);
+        }
+
+        private static readonly object[] invalid_mod_test_scenarios =
+        {
+            // incompatible pair.
+            new object[]
+            {
+                new Mod[] { new OsuModDoubleTime(), new OsuModHalfTime() },
+                new[] { typeof(OsuModDoubleTime), typeof(OsuModHalfTime) }
+            },
+            // incompatible pair with derived class.
+            new object[]
+            {
+                new Mod[] { new OsuModNightcore(), new OsuModHalfTime() },
+                new[] { typeof(OsuModNightcore), typeof(OsuModHalfTime) }
+            },
+            // system mod.
+            new object[]
+            {
+                new Mod[] { new OsuModDoubleTime(), new OsuModTouchDevice() },
+                new[] { typeof(OsuModTouchDevice) }
+            },
+            // multi mod.
+            new object[]
+            {
+                new Mod[] { new MultiMod(new OsuModHalfTime()), new OsuModHalfTime() },
+                new[] { typeof(MultiMod) }
+            },
+            // valid pair.
+            new object[]
+            {
+                new Mod[] { new OsuModDoubleTime(), new OsuModHardRock() },
+                null
+            }
+        };
+
+        [TestCaseSource(nameof(invalid_mod_test_scenarios))]
+        public void TestInvalidModScenarios(Mod[] inputMods, Type[] expectedInvalid)
+        {
+            bool isValid = ModUtils.CheckValidForGameplay(inputMods, out var invalid);
+
+            Assert.That(isValid, Is.EqualTo(expectedInvalid == null));
+
+            if (isValid)
+                Assert.IsNull(invalid);
+            else
+                Assert.That(invalid?.Select(t => t.GetType()), Is.EquivalentTo(expectedInvalid));
+        }
+
+        public abstract class CustomMod1 : Mod
+        {
+        }
+
+        public abstract class CustomMod2 : Mod
+        {
+        }
+    }
+}

osu.Game.Tests/NonVisual/OngoingOperationTrackerTest.cs

@@ -0,0 +1,106 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Screens;
+using osu.Framework.Testing;
+using osu.Game.Screens;
+using osu.Game.Screens.OnlinePlay;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Tests.NonVisual
+{
+    [HeadlessTest]
+    public class OngoingOperationTrackerTest : OsuTestScene
+    {
+        private OngoingOperationTracker tracker;
+        private IBindable<bool> operationInProgress;
+
+        [SetUpSteps]
+        public void SetUp()
+        {
+            AddStep("create tracker", () => Child = tracker = new OngoingOperationTracker());
+            AddStep("bind to operation status", () => operationInProgress = tracker.InProgress.GetBoundCopy());
+        }
+
+        [Test]
+        public void TestOperationTracking()
+        {
+            IDisposable firstOperation = null;
+            IDisposable secondOperation = null;
+
+            AddStep("begin first operation", () => firstOperation = tracker.BeginOperation());
+            AddAssert("first operation in progress", () => operationInProgress.Value);
+
+            AddStep("cannot start another operation",
+                () => Assert.Throws<InvalidOperationException>(() => tracker.BeginOperation()));
+
+            AddStep("end first operation", () => firstOperation.Dispose());
+            AddAssert("first operation is ended", () => !operationInProgress.Value);
+
+            AddStep("start second operation", () => secondOperation = tracker.BeginOperation());
+            AddAssert("second operation in progress", () => operationInProgress.Value);
+
+            AddStep("dispose first operation again", () => firstOperation.Dispose());
+            AddAssert("second operation still in progress", () => operationInProgress.Value);
+
+            AddStep("dispose second operation", () => secondOperation.Dispose());
+            AddAssert("second operation is ended", () => !operationInProgress.Value);
+        }
+
+        [Test]
+        public void TestOperationDisposalAfterTracker()
+        {
+            IDisposable operation = null;
+
+            AddStep("begin operation", () => operation = tracker.BeginOperation());
+            AddStep("dispose tracker", () => tracker.Expire());
+            AddStep("end operation", () => operation.Dispose());
+            AddAssert("operation is ended", () => !operationInProgress.Value);
+        }
+
+        [Test]
+        public void TestOperationDisposalAfterScreenExit()
+        {
+            TestScreenWithTracker screen = null;
+            OsuScreenStack stack;
+            IDisposable operation = null;
+
+            AddStep("create screen with tracker", () =>
+            {
+                Child = stack = new OsuScreenStack
+                {
+                    RelativeSizeAxes = Axes.Both
+                };
+
+                stack.Push(screen = new TestScreenWithTracker());
+            });
+            AddUntilStep("wait for loaded", () => screen.IsLoaded);
+
+            AddStep("begin operation", () => operation = screen.OngoingOperationTracker.BeginOperation());
+            AddAssert("operation in progress", () => screen.OngoingOperationTracker.InProgress.Value);
+
+            AddStep("dispose after screen exit", () =>
+            {
+                screen.Exit();
+                operation.Dispose();
+            });
+            AddAssert("operation ended", () => !screen.OngoingOperationTracker.InProgress.Value);
+        }
+
+        private class TestScreenWithTracker : OsuScreen
+        {
+            public OngoingOperationTracker OngoingOperationTracker { get; private set; }
+
+            [BackgroundDependencyLoader]
+            private void load()
+            {
+                InternalChild = OngoingOperationTracker = new OngoingOperationTracker();
+            }
+        }
+    }
+}

osu.Game.Tests/NonVisual/TaskChainTest.cs

@@ -0,0 +1,111 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Threading;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using osu.Game.Utils;
+
+namespace osu.Game.Tests.NonVisual
+{
+    [TestFixture]
+    public class TaskChainTest
+    {
+        private TaskChain taskChain;
+        private int currentTask;
+        private CancellationTokenSource globalCancellationToken;
+
+        [SetUp]
+        public void Setup()
+        {
+            globalCancellationToken = new CancellationTokenSource();
+            taskChain = new TaskChain();
+            currentTask = 0;
+        }
+
+        [TearDown]
+        public void TearDown()
+        {
+            globalCancellationToken?.Cancel();
+        }
+
+        [Test]
+        public async Task TestChainedTasksRunSequentially()
+        {
+            var task1 = addTask();
+            var task2 = addTask();
+            var task3 = addTask();
+
+            task3.mutex.Set();
+            task2.mutex.Set();
+            task1.mutex.Set();
+
+            await Task.WhenAll(task1.task, task2.task, task3.task);
+
+            Assert.That(task1.task.Result, Is.EqualTo(1));
+            Assert.That(task2.task.Result, Is.EqualTo(2));
+            Assert.That(task3.task.Result, Is.EqualTo(3));
+        }
+
+        [Test]
+        public async Task TestChainedTaskWithIntermediateCancelRunsInSequence()
+        {
+            var task1 = addTask();
+            var task2 = addTask();
+            var task3 = addTask();
+
+            // Cancel task2, allow task3 to complete.
+            task2.cancellation.Cancel();
+            task2.mutex.Set();
+            task3.mutex.Set();
+
+            // Allow task3 to potentially complete.
+            Thread.Sleep(1000);
+
+            // Allow task1 to complete.
+            task1.mutex.Set();
+
+            // Wait on both tasks.
+            await Task.WhenAll(task1.task, task3.task);
+
+            Assert.That(task1.task.Result, Is.EqualTo(1));
+            Assert.That(task2.task.IsCompleted, Is.False);
+            Assert.That(task3.task.Result, Is.EqualTo(2));
+        }
+
+        [Test]
+        public async Task TestChainedTaskDoesNotCompleteBeforeChildTasks()
+        {
+            var mutex = new ManualResetEventSlim(false);
+
+            var task = taskChain.Add(async () => await Task.Run(() => mutex.Wait(globalCancellationToken.Token)));
+
+            // Allow task to potentially complete
+            Thread.Sleep(1000);
+
+            Assert.That(task.IsCompleted, Is.False);
+
+            // Allow the task to complete.
+            mutex.Set();
+
+            await task;
+        }
+
+        private (Task<int> task, ManualResetEventSlim mutex, CancellationTokenSource cancellation) addTask()
+        {
+            var mutex = new ManualResetEventSlim(false);
+            var completionSource = new TaskCompletionSource<int>();
+
+            var cancellationSource = new CancellationTokenSource();
+            var token = CancellationTokenSource.CreateLinkedTokenSource(cancellationSource.Token, globalCancellationToken.Token);
+
+            taskChain.Add(() =>
+            {
+                mutex.Wait(globalCancellationToken.Token);
+                completionSource.SetResult(Interlocked.Increment(ref currentTask));
+            }, token.Token);
+
+            return (completionSource.Task, mutex, cancellationSource);
+        }
+    }
+}

osu.Game.Tests/Online/TestAPIModJsonSerialization.cs

@@ -16,7 +16,7 @@ using osu.Game.Rulesets.UI;
 namespace osu.Game.Tests.Online
 {
     [TestFixture]
-    public class TestAPIModSerialization
+    public class TestAPIModJsonSerialization
     {
         [Test]
         public void TestAcronymIsPreserved()
@@ -68,12 +68,29 @@ namespace osu.Game.Tests.Online
             Assert.That(converted.FinalRate.Value, Is.EqualTo(0.25));
         }
 
+        [Test]
+        public void TestDeserialiseDifficultyAdjustModWithExtendedLimits()
+        {
+            var apiMod = new APIMod(new TestModDifficultyAdjust
+            {
+                OverallDifficulty = { Value = 11 },
+                ExtendedLimits = { Value = true }
+            });
+
+            var deserialised = JsonConvert.DeserializeObject<APIMod>(JsonConvert.SerializeObject(apiMod));
+            var converted = (TestModDifficultyAdjust)deserialised.ToMod(new TestRuleset());
+
+            Assert.That(converted.ExtendedLimits.Value, Is.True);
+            Assert.That(converted.OverallDifficulty.Value, Is.EqualTo(11));
+        }
+
         private class TestRuleset : Ruleset
         {
             public override IEnumerable<Mod> GetModsFor(ModType type) => new Mod[]
             {
                 new TestMod(),
                 new TestModTimeRamp(),
+                new TestModDifficultyAdjust()
             };
 
             public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod> mods = null) => throw new System.NotImplementedException();
@@ -135,5 +152,9 @@ namespace osu.Game.Tests.Online
                 Value = true
             };
         }
+
+        private class TestModDifficultyAdjust : ModDifficultyAdjust
+        {
+        }
     }
 }

osu.Game.Tests/Online/TestAPIModMessagePackSerialization.cs

@@ -0,0 +1,166 @@
+// 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 MessagePack;
+using NUnit.Framework;
+using osu.Framework.Bindables;
+using osu.Game.Beatmaps;
+using osu.Game.Configuration;
+using osu.Game.Online.API;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Difficulty;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Tests.Online
+{
+    [TestFixture]
+    public class TestAPIModMessagePackSerialization
+    {
+        [Test]
+        public void TestAcronymIsPreserved()
+        {
+            var apiMod = new APIMod(new TestMod());
+
+            var deserialized = MessagePackSerializer.Deserialize<APIMod>(MessagePackSerializer.Serialize(apiMod));
+
+            Assert.That(deserialized.Acronym, Is.EqualTo(apiMod.Acronym));
+        }
+
+        [Test]
+        public void TestRawSettingIsPreserved()
+        {
+            var apiMod = new APIMod(new TestMod { TestSetting = { Value = 2 } });
+
+            var deserialized = MessagePackSerializer.Deserialize<APIMod>(MessagePackSerializer.Serialize(apiMod));
+
+            Assert.That(deserialized.Settings, Contains.Key("test_setting").With.ContainValue(2.0));
+        }
+
+        [Test]
+        public void TestConvertedModHasCorrectSetting()
+        {
+            var apiMod = new APIMod(new TestMod { TestSetting = { Value = 2 } });
+
+            var deserialized = MessagePackSerializer.Deserialize<APIMod>(MessagePackSerializer.Serialize(apiMod));
+            var converted = (TestMod)deserialized.ToMod(new TestRuleset());
+
+            Assert.That(converted.TestSetting.Value, Is.EqualTo(2));
+        }
+
+        [Test]
+        public void TestDeserialiseTimeRampMod()
+        {
+            // Create the mod with values different from default.
+            var apiMod = new APIMod(new TestModTimeRamp
+            {
+                AdjustPitch = { Value = false },
+                InitialRate = { Value = 1.25 },
+                FinalRate = { Value = 0.25 }
+            });
+
+            var deserialised = MessagePackSerializer.Deserialize<APIMod>(MessagePackSerializer.Serialize(apiMod));
+            var converted = (TestModTimeRamp)deserialised.ToMod(new TestRuleset());
+
+            Assert.That(converted.AdjustPitch.Value, Is.EqualTo(false));
+            Assert.That(converted.InitialRate.Value, Is.EqualTo(1.25));
+            Assert.That(converted.FinalRate.Value, Is.EqualTo(0.25));
+        }
+
+        [Test]
+        public void TestDeserialiseEnumMod()
+        {
+            var apiMod = new APIMod(new TestModEnum { TestSetting = { Value = TestEnum.Value2 } });
+
+            var deserialized = MessagePackSerializer.Deserialize<APIMod>(MessagePackSerializer.Serialize(apiMod));
+
+            Assert.That(deserialized.Settings, Contains.Key("test_setting").With.ContainValue(1));
+        }
+
+        private class TestRuleset : Ruleset
+        {
+            public override IEnumerable<Mod> GetModsFor(ModType type) => new Mod[]
+            {
+                new TestMod(),
+                new TestModTimeRamp(),
+            };
+
+            public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod> mods = null) => throw new System.NotImplementedException();
+
+            public override IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap) => throw new System.NotImplementedException();
+
+            public override DifficultyCalculator CreateDifficultyCalculator(WorkingBeatmap beatmap) => throw new System.NotImplementedException();
+
+            public override string Description { get; } = string.Empty;
+            public override string ShortName { get; } = string.Empty;
+        }
+
+        private class TestMod : Mod
+        {
+            public override string Name => "Test Mod";
+            public override string Acronym => "TM";
+            public override double ScoreMultiplier => 1;
+
+            [SettingSource("Test")]
+            public BindableNumber<double> TestSetting { get; } = new BindableDouble
+            {
+                MinValue = 0,
+                MaxValue = 10,
+                Default = 5,
+                Precision = 0.01,
+            };
+        }
+
+        private class TestModTimeRamp : ModTimeRamp
+        {
+            public override string Name => "Test Mod";
+            public override string Acronym => "TMTR";
+            public override double ScoreMultiplier => 1;
+
+            [SettingSource("Initial rate", "The starting speed of the track")]
+            public override BindableNumber<double> InitialRate { get; } = new BindableDouble
+            {
+                MinValue = 1,
+                MaxValue = 2,
+                Default = 1.5,
+                Value = 1.5,
+                Precision = 0.01,
+            };
+
+            [SettingSource("Final rate", "The speed increase to ramp towards")]
+            public override BindableNumber<double> FinalRate { get; } = new BindableDouble
+            {
+                MinValue = 0,
+                MaxValue = 1,
+                Default = 0.5,
+                Value = 0.5,
+                Precision = 0.01,
+            };
+
+            [SettingSource("Adjust pitch", "Should pitch be adjusted with speed")]
+            public override BindableBool AdjustPitch { get; } = new BindableBool
+            {
+                Default = true,
+                Value = true
+            };
+        }
+
+        private class TestModEnum : Mod
+        {
+            public override string Name => "Test Mod";
+            public override string Acronym => "TM";
+            public override double ScoreMultiplier => 1;
+
+            [SettingSource("Test")]
+            public Bindable<TestEnum> TestSetting { get; } = new Bindable<TestEnum>();
+        }
+
+        private enum TestEnum
+        {
+            Value1 = 0,
+            Value2 = 1,
+            Value3 = 2
+        }
+    }
+}

osu.Game.Tests/Online/TestSceneOnlinePlayBeatmapAvailabilityTracker.cs

@@ -0,0 +1,188 @@
+// 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.IO;
+using System.Threading;
+using System.Threading.Tasks;
+using JetBrains.Annotations;
+using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Bindables;
+using osu.Framework.Extensions;
+using osu.Framework.Platform;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Formats;
+using osu.Game.Database;
+using osu.Game.IO;
+using osu.Game.IO.Archives;
+using osu.Game.Online.API;
+using osu.Game.Online.Rooms;
+using osu.Game.Rulesets;
+using osu.Game.Tests.Resources;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Tests.Online
+{
+    [HeadlessTest]
+    public class TestSceneOnlinePlayBeatmapAvailabilityTracker : OsuTestScene
+    {
+        private RulesetStore rulesets;
+        private TestBeatmapManager beatmaps;
+
+        private string testBeatmapFile;
+        private BeatmapInfo testBeatmapInfo;
+        private BeatmapSetInfo testBeatmapSet;
+
+        private readonly Bindable<PlaylistItem> selectedItem = new Bindable<PlaylistItem>();
+        private OnlinePlayBeatmapAvailablilityTracker availablilityTracker;
+
+        [BackgroundDependencyLoader]
+        private void load(AudioManager audio, GameHost host)
+        {
+            Dependencies.Cache(rulesets = new RulesetStore(ContextFactory));
+            Dependencies.CacheAs<BeatmapManager>(beatmaps = new TestBeatmapManager(LocalStorage, ContextFactory, rulesets, API, audio, host, Beatmap.Default));
+        }
+
+        [SetUp]
+        public void SetUp() => Schedule(() =>
+        {
+            beatmaps.AllowImport = new TaskCompletionSource<bool>();
+
+            testBeatmapFile = TestResources.GetTestBeatmapForImport();
+
+            testBeatmapInfo = getTestBeatmapInfo(testBeatmapFile);
+            testBeatmapSet = testBeatmapInfo.BeatmapSet;
+
+            var existing = beatmaps.QueryBeatmapSet(s => s.OnlineBeatmapSetID == testBeatmapSet.OnlineBeatmapSetID);
+            if (existing != null)
+                beatmaps.Delete(existing);
+
+            selectedItem.Value = new PlaylistItem
+            {
+                Beatmap = { Value = testBeatmapInfo },
+                Ruleset = { Value = testBeatmapInfo.Ruleset },
+            };
+
+            Child = availablilityTracker = new OnlinePlayBeatmapAvailablilityTracker
+            {
+                SelectedItem = { BindTarget = selectedItem, }
+            };
+        });
+
+        [Test]
+        public void TestBeatmapDownloadingFlow()
+        {
+            AddAssert("ensure beatmap unavailable", () => !beatmaps.IsAvailableLocally(testBeatmapSet));
+            addAvailabilityCheckStep("state not downloaded", BeatmapAvailability.NotDownloaded);
+
+            AddStep("start downloading", () => beatmaps.Download(testBeatmapSet));
+            addAvailabilityCheckStep("state downloading 0%", () => BeatmapAvailability.Downloading(0.0f));
+
+            AddStep("set progress 40%", () => ((TestDownloadRequest)beatmaps.GetExistingDownload(testBeatmapSet)).SetProgress(0.4f));
+            addAvailabilityCheckStep("state downloading 40%", () => BeatmapAvailability.Downloading(0.4f));
+
+            AddStep("finish download", () => ((TestDownloadRequest)beatmaps.GetExistingDownload(testBeatmapSet)).TriggerSuccess(testBeatmapFile));
+            addAvailabilityCheckStep("state importing", BeatmapAvailability.Importing);
+
+            AddStep("allow importing", () => beatmaps.AllowImport.SetResult(true));
+            AddUntilStep("wait for import", () => beatmaps.CurrentImportTask?.IsCompleted == true);
+            addAvailabilityCheckStep("state locally available", BeatmapAvailability.LocallyAvailable);
+        }
+
+        [Test]
+        public void TestTrackerRespectsSoftDeleting()
+        {
+            AddStep("allow importing", () => beatmaps.AllowImport.SetResult(true));
+            AddStep("import beatmap", () => beatmaps.Import(testBeatmapFile).Wait());
+            addAvailabilityCheckStep("state locally available", BeatmapAvailability.LocallyAvailable);
+
+            AddStep("delete beatmap", () => beatmaps.Delete(beatmaps.QueryBeatmapSet(b => b.OnlineBeatmapSetID == testBeatmapSet.OnlineBeatmapSetID)));
+            addAvailabilityCheckStep("state not downloaded", BeatmapAvailability.NotDownloaded);
+
+            AddStep("undelete beatmap", () => beatmaps.Undelete(beatmaps.QueryBeatmapSet(b => b.OnlineBeatmapSetID == testBeatmapSet.OnlineBeatmapSetID)));
+            addAvailabilityCheckStep("state locally available", BeatmapAvailability.LocallyAvailable);
+        }
+
+        [Test]
+        public void TestTrackerRespectsChecksum()
+        {
+            AddStep("allow importing", () => beatmaps.AllowImport.SetResult(true));
+
+            AddStep("import altered beatmap", () =>
+            {
+                beatmaps.Import(TestResources.GetTestBeatmapForImport(true)).Wait();
+            });
+            addAvailabilityCheckStep("state still not downloaded", BeatmapAvailability.NotDownloaded);
+
+            AddStep("recreate tracker", () => Child = availablilityTracker = new OnlinePlayBeatmapAvailablilityTracker
+            {
+                SelectedItem = { BindTarget = selectedItem }
+            });
+            addAvailabilityCheckStep("state not downloaded as well", BeatmapAvailability.NotDownloaded);
+        }
+
+        private void addAvailabilityCheckStep(string description, Func<BeatmapAvailability> expected)
+        {
+            AddAssert(description, () => availablilityTracker.Availability.Value.Equals(expected.Invoke()));
+        }
+
+        private static BeatmapInfo getTestBeatmapInfo(string archiveFile)
+        {
+            BeatmapInfo info;
+
+            using (var archive = new ZipArchiveReader(File.OpenRead(archiveFile)))
+            using (var stream = archive.GetStream("Soleily - Renatus (Gamu) [Insane].osu"))
+            using (var reader = new LineBufferedReader(stream))
+            {
+                var decoder = Decoder.GetDecoder<Beatmap>(reader);
+                var beatmap = decoder.Decode(reader);
+
+                info = beatmap.BeatmapInfo;
+                info.BeatmapSet.Beatmaps = new List<BeatmapInfo> { info };
+                info.BeatmapSet.Metadata = info.Metadata;
+                info.MD5Hash = stream.ComputeMD5Hash();
+                info.Hash = stream.ComputeSHA2Hash();
+            }
+
+            return info;
+        }
+
+        private class TestBeatmapManager : BeatmapManager
+        {
+            public TaskCompletionSource<bool> AllowImport = new TaskCompletionSource<bool>();
+
+            public Task<BeatmapSetInfo> CurrentImportTask { get; private set; }
+
+            protected override ArchiveDownloadRequest<BeatmapSetInfo> CreateDownloadRequest(BeatmapSetInfo set, bool minimiseDownloadSize)
+                => new TestDownloadRequest(set);
+
+            public TestBeatmapManager(Storage storage, IDatabaseContextFactory contextFactory, RulesetStore rulesets, IAPIProvider api, [NotNull] AudioManager audioManager, GameHost host = null, WorkingBeatmap defaultBeatmap = null, bool performOnlineLookups = false)
+                : base(storage, contextFactory, rulesets, api, audioManager, host, defaultBeatmap, performOnlineLookups)
+            {
+            }
+
+            public override async Task<BeatmapSetInfo> Import(BeatmapSetInfo item, ArchiveReader archive = null, CancellationToken cancellationToken = default)
+            {
+                await AllowImport.Task;
+                return await (CurrentImportTask = base.Import(item, archive, cancellationToken));
+            }
+        }
+
+        private class TestDownloadRequest : ArchiveDownloadRequest<BeatmapSetInfo>
+        {
+            public new void SetProgress(float progress) => base.SetProgress(progress);
+            public new void TriggerSuccess(string filename) => base.TriggerSuccess(filename);
+
+            public TestDownloadRequest(BeatmapSetInfo model)
+                : base(model)
+            {
+            }
+
+            protected override string Target => null;
+        }
+    }
+}

osu.Game.Tests/Resources/animation-types.osb

@@ -0,0 +1,9 @@
+osu file format v14
+
+[Events]
+Animation,Foreground,Centre,"forever-string.png",330,240,10,108,LoopForever
+Animation,Foreground,Centre,"once-string.png",330,240,10,108,LoopOnce
+Animation,Foreground,Centre,"forever-number.png",330,240,10,108,0
+Animation,Foreground,Centre,"once-number.png",330,240,10,108,1
+Animation,Foreground,Centre,"undefined-number.png",330,240,10,108,16
+Animation,Foreground,Centre,"omitted.png",330,240,10,108

osu.Game.Tests/Rulesets/Mods/ModTimeRampTest.cs

@@ -0,0 +1,113 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Framework.Audio.Track;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Osu.Objects;
+
+namespace osu.Game.Tests.Rulesets.Mods
+{
+    [TestFixture]
+    public class ModTimeRampTest
+    {
+        private const double start_time = 1000;
+        private const double duration = 9000;
+
+        private TrackVirtual track;
+
+        [SetUp]
+        public void SetUp()
+        {
+            track = new TrackVirtual(20_000);
+        }
+
+        [TestCase(0, 1)]
+        [TestCase(start_time, 1)]
+        [TestCase(start_time + duration * ModTimeRamp.FINAL_RATE_PROGRESS / 2, 1.25)]
+        [TestCase(start_time + duration * ModTimeRamp.FINAL_RATE_PROGRESS, 1.5)]
+        [TestCase(start_time + duration, 1.5)]
+        [TestCase(15000, 1.5)]
+        public void TestModWindUp(double time, double expectedRate)
+        {
+            var beatmap = createSingleSpinnerBeatmap();
+            var mod = new ModWindUp();
+            mod.ApplyToBeatmap(beatmap);
+            mod.ApplyToTrack(track);
+
+            seekTrackAndUpdateMod(mod, time);
+
+            Assert.That(mod.SpeedChange.Value, Is.EqualTo(expectedRate));
+        }
+
+        [TestCase(0, 1)]
+        [TestCase(start_time, 1)]
+        [TestCase(start_time + duration * ModTimeRamp.FINAL_RATE_PROGRESS / 2, 0.75)]
+        [TestCase(start_time + duration * ModTimeRamp.FINAL_RATE_PROGRESS, 0.5)]
+        [TestCase(start_time + duration, 0.5)]
+        [TestCase(15000, 0.5)]
+        public void TestModWindDown(double time, double expectedRate)
+        {
+            var beatmap = createSingleSpinnerBeatmap();
+            var mod = new ModWindDown
+            {
+                FinalRate = { Value = 0.5 }
+            };
+            mod.ApplyToBeatmap(beatmap);
+            mod.ApplyToTrack(track);
+
+            seekTrackAndUpdateMod(mod, time);
+
+            Assert.That(mod.SpeedChange.Value, Is.EqualTo(expectedRate));
+        }
+
+        [TestCase(0, 1)]
+        [TestCase(start_time, 1)]
+        [TestCase(2 * start_time, 1.5)]
+        public void TestZeroDurationMap(double time, double expectedRate)
+        {
+            var beatmap = createSingleObjectBeatmap();
+            var mod = new ModWindUp();
+            mod.ApplyToBeatmap(beatmap);
+            mod.ApplyToTrack(track);
+
+            seekTrackAndUpdateMod(mod, time);
+
+            Assert.That(mod.SpeedChange.Value, Is.EqualTo(expectedRate));
+        }
+
+        private void seekTrackAndUpdateMod(ModTimeRamp mod, double time)
+        {
+            track.Seek(time);
+            // update the mod via a fake playfield to re-calculate the current rate.
+            mod.Update(null);
+        }
+
+        private static Beatmap createSingleSpinnerBeatmap()
+        {
+            return new Beatmap
+            {
+                HitObjects =
+                {
+                    new Spinner
+                    {
+                        StartTime = start_time,
+                        Duration = duration
+                    }
+                }
+            };
+        }
+
+        private static Beatmap createSingleObjectBeatmap()
+        {
+            return new Beatmap
+            {
+                HitObjects =
+                {
+                    new HitCircle { StartTime = start_time }
+                }
+            };
+        }
+    }
+}

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

@@ -5,6 +5,8 @@ using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Osu.Beatmaps;
+using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.Timelines.Summary;
 using osuTK;
 
@@ -13,6 +15,9 @@ namespace osu.Game.Tests.Visual.Editing
     [TestFixture]
     public class TestSceneEditorSummaryTimeline : EditorClockTestScene
     {
+        [Cached(typeof(EditorBeatmap))]
+        private readonly EditorBeatmap editorBeatmap = new EditorBeatmap(new OsuBeatmap());
+
         [BackgroundDependencyLoader]
         private void load()
         {

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

@@ -0,0 +1,55 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Testing;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Screens.Edit.Compose.Components.Timeline;
+using osuTK;
+using osuTK.Input;
+using static osu.Game.Screens.Edit.Compose.Components.Timeline.TimelineHitObjectBlueprint;
+
+namespace osu.Game.Tests.Visual.Editing
+{
+    public class TestSceneTimelineHitObjectBlueprint : TimelineTestScene
+    {
+        public override Drawable CreateTestComponent() => new TimelineBlueprintContainer(Composer);
+
+        [Test]
+        public void TestDisallowZeroDurationObjects()
+        {
+            DragBar dragBar;
+
+            AddStep("add spinner", () =>
+            {
+                EditorBeatmap.Clear();
+                EditorBeatmap.Add(new Spinner
+                {
+                    Position = new Vector2(256, 256),
+                    StartTime = 150,
+                    Duration = 500
+                });
+            });
+
+            AddStep("hold down drag bar", () =>
+            {
+                // distinguishes between the actual drag bar and its "underlay shadow".
+                dragBar = this.ChildrenOfType<DragBar>().Single(bar => bar.HandlePositionalInput);
+                InputManager.MoveMouseTo(dragBar);
+                InputManager.PressButton(MouseButton.Left);
+            });
+
+            AddStep("try to drag bar past start", () =>
+            {
+                var blueprint = this.ChildrenOfType<TimelineHitObjectBlueprint>().Single();
+                InputManager.MoveMouseTo(blueprint.SelectionQuad.TopLeft - new Vector2(100, 0));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            AddAssert("object has non-zero duration", () => EditorBeatmap.HitObjects.OfType<IHasDuration>().Single().Duration > 0);
+        }
+    }
+}

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

@@ -23,22 +23,24 @@ namespace osu.Game.Tests.Visual.Editing
 
         protected HitObjectComposer Composer { get; private set; }
 
+        protected EditorBeatmap EditorBeatmap { get; private set; }
+
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)
         {
             Beatmap.Value = new WaveformTestBeatmap(audio);
 
             var playable = Beatmap.Value.GetPlayableBeatmap(Beatmap.Value.BeatmapInfo.Ruleset);
-            var editorBeatmap = new EditorBeatmap(playable);
+            EditorBeatmap = new EditorBeatmap(playable);
 
-            Dependencies.Cache(editorBeatmap);
+            Dependencies.Cache(EditorBeatmap);
-            Dependencies.CacheAs<IBeatSnapProvider>(editorBeatmap);
+            Dependencies.CacheAs<IBeatSnapProvider>(EditorBeatmap);
 
             Composer = playable.BeatmapInfo.Ruleset.CreateInstance().CreateHitObjectComposer().With(d => d.Alpha = 0);
 
             AddRange(new Drawable[]
             {
-                editorBeatmap,
+                EditorBeatmap,
                 Composer,
                 new FillFlowContainer
                 {

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

@@ -17,10 +17,12 @@ using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Difficulty;
+using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Objects.Legacy;
+using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.UI;
 using osuTK;
 using osuTK.Graphics;
@@ -129,6 +131,31 @@ namespace osu.Game.Tests.Visual.Gameplay
             AddUntilStep("no DHOs shown", () => !this.ChildrenOfType<DrawableTestHitObject>().Any());
         }
 
+        [Test]
+        public void TestApplyHitResultOnKilled()
+        {
+            ManualClock clock = null;
+            bool anyJudged = false;
+
+            void onNewResult(JudgementResult _) => anyJudged = true;
+
+            var beatmap = new Beatmap();
+            beatmap.HitObjects.Add(new TestKilledHitObject { Duration = 20 });
+
+            createTest(beatmap, 10, () => new FramedClock(clock = new ManualClock()));
+
+            AddStep("subscribe to new result", () =>
+            {
+                anyJudged = false;
+                drawableRuleset.NewResult += onNewResult;
+            });
+            AddStep("skip past object", () => clock.CurrentTime = beatmap.HitObjects[0].GetEndTime() + 1000);
+
+            AddAssert("object judged", () => anyJudged);
+
+            AddStep("clean up", () => drawableRuleset.NewResult -= onNewResult);
+        }
+
         private void createTest(IBeatmap beatmap, int poolSize, Func<IFrameBasedClock> createClock = null) => AddStep("create test", () =>
         {
             var ruleset = new TestPoolingRuleset();
@@ -192,6 +219,7 @@ namespace osu.Game.Tests.Visual.Gameplay
             private void load()
             {
                 RegisterPool<TestHitObject, DrawableTestHitObject>(poolSize);
+                RegisterPool<TestKilledHitObject, DrawableTestKilledHitObject>(poolSize);
             }
 
             protected override HitObjectLifetimeEntry CreateLifetimeEntry(HitObject hitObject) => new TestHitObjectLifetimeEntry(hitObject);
@@ -220,19 +248,30 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             protected override IEnumerable<TestHitObject> ConvertHitObject(HitObject original, IBeatmap beatmap, CancellationToken cancellationToken)
             {
-                yield return new TestHitObject
+                switch (original)
                 {
-                    StartTime = original.StartTime,
+                    case TestKilledHitObject h:
-                    Duration = 250
+                        yield return h;
-                };
+
+                        break;
+
+                    default:
+                        yield return new TestHitObject
+                        {
+                            StartTime = original.StartTime,
+                            Duration = 250
+                        };
+
+                        break;
+                }
             }
         }
 
         #endregion
 
-        #region HitObject
+        #region HitObjects
 
-        private class TestHitObject : ConvertHitObject
+        private class TestHitObject : ConvertHitObject, IHasDuration
         {
             public double EndTime => StartTime + Duration;
 
@@ -287,6 +326,30 @@ namespace osu.Game.Tests.Visual.Gameplay
             }
         }
 
+        private class TestKilledHitObject : TestHitObject
+        {
+        }
+
+        private class DrawableTestKilledHitObject : DrawableHitObject<TestKilledHitObject>
+        {
+            public DrawableTestKilledHitObject()
+                : base(null)
+            {
+            }
+
+            protected override void UpdateHitStateTransforms(ArmedState state)
+            {
+                base.UpdateHitStateTransforms(state);
+                Expire();
+            }
+
+            public override void OnKilled()
+            {
+                base.OnKilled();
+                ApplyResult(r => r.Type = r.Judgement.MinResult);
+            }
+        }
+
         #endregion
     }
 }

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

@@ -19,7 +19,7 @@ namespace osu.Game.Tests.Visual.Gameplay
         {
             var beatmap = Beatmap.Value.GetPlayableBeatmap(ruleset.RulesetInfo, Array.Empty<Mod>());
 
-            return new ScoreAccessibleReplayPlayer(ruleset.GetAutoplayMod()?.CreateReplayScore(beatmap));
+            return new ScoreAccessibleReplayPlayer(ruleset.GetAutoplayMod()?.CreateReplayScore(beatmap, Array.Empty<Mod>()));
         }
 
         protected override void AddCheckSteps()

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

@@ -0,0 +1,74 @@
+// 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.Allocation;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Configuration;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
+using osu.Game.Storyboards;
+using osu.Game.Storyboards.Drawables;
+
+namespace osu.Game.Tests.Visual.Gameplay
+{
+    public class TestSceneStoryboardSamplePlayback : PlayerTestScene
+    {
+        private Storyboard storyboard;
+
+        [BackgroundDependencyLoader]
+        private void load(OsuConfigManager config)
+        {
+            config.Set(OsuSetting.ShowStoryboard, true);
+
+            storyboard = new Storyboard();
+            var backgroundLayer = storyboard.GetLayer("Background");
+            backgroundLayer.Add(new StoryboardSampleInfo("Intro/welcome.mp3", time: -7000, volume: 20));
+            backgroundLayer.Add(new StoryboardSampleInfo("Intro/welcome.mp3", time: -5000, volume: 20));
+            backgroundLayer.Add(new StoryboardSampleInfo("Intro/welcome.mp3", time: 0, volume: 20));
+        }
+
+        [Test]
+        public void TestStoryboardSamplesStopDuringPause()
+        {
+            checkForFirstSamplePlayback();
+
+            AddStep("player paused", () => Player.Pause());
+            AddAssert("player is currently paused", () => Player.GameplayClockContainer.IsPaused.Value);
+            AddAssert("all storyboard samples stopped immediately", () => allStoryboardSamples.All(sound => !sound.IsPlaying));
+
+            AddStep("player resume", () => Player.Resume());
+            AddUntilStep("any storyboard samples playing after resume", () => allStoryboardSamples.Any(sound => sound.IsPlaying));
+        }
+
+        [Test]
+        public void TestStoryboardSamplesStopOnSkip()
+        {
+            checkForFirstSamplePlayback();
+
+            AddStep("skip intro", () => InputManager.Key(osuTK.Input.Key.Space));
+            AddAssert("all storyboard samples stopped immediately", () => allStoryboardSamples.All(sound => !sound.IsPlaying));
+
+            AddUntilStep("any storyboard samples playing after skip", () => allStoryboardSamples.Any(sound => sound.IsPlaying));
+        }
+
+        private void checkForFirstSamplePlayback()
+        {
+            AddUntilStep("storyboard loaded", () => Player.Beatmap.Value.StoryboardLoaded);
+            AddUntilStep("any storyboard samples playing", () => allStoryboardSamples.Any(sound => sound.IsPlaying));
+        }
+
+        private IEnumerable<DrawableStoryboardSample> allStoryboardSamples => Player.ChildrenOfType<DrawableStoryboardSample>();
+
+        protected override bool AllowFail => false;
+
+        protected override Ruleset CreatePlayerRuleset() => new OsuRuleset();
+        protected override TestPlayer CreatePlayer(Ruleset ruleset) => new TestPlayer(true, false);
+
+        protected override WorkingBeatmap CreateWorkingBeatmap(IBeatmap beatmap, Storyboard storyboard = null) =>
+            new ClockBackedTestWorkingBeatmap(beatmap, storyboard ?? this.storyboard, Clock, Audio);
+    }
+}

osu.Game.Tests/Visual/Multiplayer/TestSceneDrawableRoomPlaylist.cs

@@ -11,8 +11,8 @@ using osu.Framework.Graphics.Containers;
 using osu.Framework.Platform;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.Drawables;
 using osu.Game.Graphics.Containers;
-using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
@@ -20,6 +20,7 @@ using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Screens.OnlinePlay;
 using osu.Game.Tests.Beatmaps;
+using osu.Game.Users;
 using osuTK;
 using osuTK.Input;
 
@@ -241,7 +242,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
         }
 
         private void moveToItem(int index, Vector2? offset = null)
-            => AddStep($"move mouse to item {index}", () => InputManager.MoveMouseTo(playlist.ChildrenOfType<OsuRearrangeableListItem<PlaylistItem>>().ElementAt(index), offset));
+            => AddStep($"move mouse to item {index}", () => InputManager.MoveMouseTo(playlist.ChildrenOfType<DifficultyIcon>().ElementAt(index), offset));
 
         private void moveToDragger(int index, Vector2? offset = null) => AddStep($"move mouse to dragger {index}", () =>
         {
@@ -252,7 +253,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
         private void moveToDeleteButton(int index, Vector2? offset = null) => AddStep($"move mouse to delete button {index}", () =>
         {
             var item = playlist.ChildrenOfType<OsuRearrangeableListItem<PlaylistItem>>().ElementAt(index);
-            InputManager.MoveMouseTo(item.ChildrenOfType<IconButton>().ElementAt(0), offset);
+            InputManager.MoveMouseTo(item.ChildrenOfType<DrawableRoomPlaylistItem.PlaylistRemoveButton>().ElementAt(0), offset);
         });
 
         private void assertHandleVisibility(int index, bool visible)
@@ -260,7 +261,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 () => (playlist.ChildrenOfType<OsuRearrangeableListItem<PlaylistItem>.PlaylistItemHandle>().ElementAt(index).Alpha > 0) == visible);
 
         private void assertDeleteButtonVisibility(int index, bool visible)
-            => AddAssert($"delete button {index} {(visible ? "is" : "is not")} visible", () => (playlist.ChildrenOfType<IconButton>().ElementAt(2 + index * 2).Alpha > 0) == visible);
+            => AddAssert($"delete button {index} {(visible ? "is" : "is not")} visible", () => (playlist.ChildrenOfType<DrawableRoomPlaylistItem.PlaylistRemoveButton>().ElementAt(2 + index * 2).Alpha > 0) == visible);
 
         private void createPlaylist(bool allowEdit, bool allowSelection)
         {
@@ -278,7 +279,21 @@ namespace osu.Game.Tests.Visual.Multiplayer
                     playlist.Items.Add(new PlaylistItem
                     {
                         ID = i,
-                        Beatmap = { Value = new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo },
+                        Beatmap =
+                        {
+                            Value = i % 2 == 1
+                                ? new TestBeatmap(new OsuRuleset().RulesetInfo).BeatmapInfo
+                                : new BeatmapInfo
+                                {
+                                    Metadata = new BeatmapMetadata
+                                    {
+                                        Artist = "Artist",
+                                        Author = new User { Username = "Creator name here" },
+                                        Title = "Long title used to check background colour",
+                                    },
+                                    BeatmapSet = new BeatmapSetInfo()
+                                }
+                        },
                         Ruleset = { Value = new OsuRuleset().RulesetInfo },
                         RequiredMods =
                         {

osu.Game.Tests/Visual/Multiplayer/TestSceneFreeModSelectOverlay.cs

@@ -0,0 +1,21 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Screens.OnlinePlay;
+
+namespace osu.Game.Tests.Visual.Multiplayer
+{
+    public class TestSceneFreeModSelectOverlay : MultiplayerTestScene
+    {
+        [SetUp]
+        public new void Setup() => Schedule(() =>
+        {
+            Child = new FreeModSelectOverlay
+            {
+                State = { Value = Visibility.Visible }
+            };
+        });
+    }
+}

osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerParticipantsList.cs

@@ -7,7 +7,12 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Online;
 using osu.Game.Online.Multiplayer;
+using osu.Game.Online.Rooms;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Participants;
 using osu.Game.Users;
 using osuTK;
@@ -17,16 +22,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
     public class TestSceneMultiplayerParticipantsList : MultiplayerTestScene
     {
         [SetUp]
-        public new void Setup() => Schedule(() =>
+        public new void Setup() => Schedule(createNewParticipantsList);
-        {
-            Child = new ParticipantsList
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                RelativeSizeAxes = Axes.Y,
-                Size = new Vector2(380, 0.7f)
-            };
-        });
 
         [Test]
         public void TestAddUser()
@@ -73,6 +69,50 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddAssert("single panel is for second user", () => this.ChildrenOfType<ParticipantPanel>().Single().User.User == secondUser);
         }
 
+        [Test]
+        public void TestGameStateHasPriorityOverDownloadState()
+        {
+            AddStep("set to downloading map", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.Downloading(0)));
+            checkProgressBarVisibility(true);
+
+            AddStep("make user ready", () => Client.ChangeState(MultiplayerUserState.Results));
+            checkProgressBarVisibility(false);
+            AddUntilStep("ready mark visible", () => this.ChildrenOfType<StateDisplay>().Single().IsPresent);
+
+            AddStep("make user ready", () => Client.ChangeState(MultiplayerUserState.Idle));
+            checkProgressBarVisibility(true);
+        }
+
+        [Test]
+        public void TestCorrectInitialState()
+        {
+            AddStep("set to downloading map", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.Downloading(0)));
+            AddStep("recreate list", createNewParticipantsList);
+            checkProgressBarVisibility(true);
+        }
+
+        [Test]
+        public void TestBeatmapDownloadingStates()
+        {
+            AddStep("set to no map", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.NotDownloaded()));
+            AddStep("set to downloading map", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.Downloading(0)));
+
+            checkProgressBarVisibility(true);
+
+            AddRepeatStep("increment progress", () =>
+            {
+                var progress = this.ChildrenOfType<ParticipantPanel>().Single().User.BeatmapAvailability.DownloadProgress ?? 0;
+                Client.ChangeBeatmapAvailability(BeatmapAvailability.Downloading(progress + RNG.NextSingle(0.1f)));
+            }, 25);
+
+            AddAssert("progress bar increased", () => this.ChildrenOfType<ProgressBar>().Single().Current.Value > 0);
+
+            AddStep("set to importing map", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.Importing()));
+            checkProgressBarVisibility(false);
+
+            AddStep("set to available", () => Client.ChangeBeatmapAvailability(BeatmapAvailability.LocallyAvailable()));
+        }
+
         [Test]
         public void TestToggleReadyState()
         {
@@ -120,8 +160,64 @@ namespace osu.Game.Tests.Visual.Multiplayer
                     });
 
                     Client.ChangeUserState(i, (MultiplayerUserState)RNG.Next(0, (int)MultiplayerUserState.Results + 1));
+
+                    if (RNG.NextBool())
+                    {
+                        var beatmapState = (DownloadState)RNG.Next(0, (int)DownloadState.LocallyAvailable + 1);
+
+                        switch (beatmapState)
+                        {
+                            case DownloadState.NotDownloaded:
+                                Client.ChangeUserBeatmapAvailability(i, BeatmapAvailability.NotDownloaded());
+                                break;
+
+                            case DownloadState.Downloading:
+                                Client.ChangeUserBeatmapAvailability(i, BeatmapAvailability.Downloading(RNG.NextSingle()));
+                                break;
+
+                            case DownloadState.Importing:
+                                Client.ChangeUserBeatmapAvailability(i, BeatmapAvailability.Importing());
+                                break;
+                        }
+                    }
                 }
             });
         }
+
+        [Test]
+        public void TestUserWithMods()
+        {
+            AddStep("add user", () =>
+            {
+                Client.AddUser(new User
+                {
+                    Id = 0,
+                    Username = "User 0",
+                    CurrentModeRank = RNG.Next(1, 100000),
+                    CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
+                });
+
+                Client.ChangeUserMods(0, new Mod[]
+                {
+                    new OsuModHardRock(),
+                    new OsuModDifficultyAdjust { ApproachRate = { Value = 1 } }
+                });
+            });
+
+            for (var i = MultiplayerUserState.Idle; i < MultiplayerUserState.Results; i++)
+            {
+                var state = i;
+                AddStep($"set state: {state}", () => Client.ChangeUserState(0, state));
+            }
+        }
+
+        private void createNewParticipantsList()
+        {
+            Child = new ParticipantsList { Anchor = Anchor.Centre, Origin = Anchor.Centre, RelativeSizeAxes = Axes.Y, Size = new Vector2(380, 0.7f) };
+        }
+
+        private void checkProgressBarVisibility(bool visible) =>
+            AddUntilStep($"progress bar {(visible ? "is" : "is not")}visible", () =>
+                this.ChildrenOfType<ProgressBar>().Single().IsPresent == visible);
     }
 }

osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerReadyButton.cs

@@ -6,6 +6,7 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
 using osu.Framework.Testing;
@@ -26,8 +27,11 @@ namespace osu.Game.Tests.Visual.Multiplayer
     public class TestSceneMultiplayerReadyButton : MultiplayerTestScene
     {
         private MultiplayerReadyButton button;
+        private OnlinePlayBeatmapAvailablilityTracker beatmapTracker;
         private BeatmapSetInfo importedSet;
 
+        private readonly Bindable<PlaylistItem> selectedItem = new Bindable<PlaylistItem>();
+
         private BeatmapManager beatmaps;
         private RulesetStore rulesets;
 
@@ -39,6 +43,13 @@ namespace osu.Game.Tests.Visual.Multiplayer
             Dependencies.Cache(rulesets = new RulesetStore(ContextFactory));
             Dependencies.Cache(beatmaps = new BeatmapManager(LocalStorage, ContextFactory, rulesets, null, audio, host, Beatmap.Default));
             beatmaps.Import(TestResources.GetTestBeatmapForImport(true)).Wait();
+
+            Add(beatmapTracker = new OnlinePlayBeatmapAvailablilityTracker
+            {
+                SelectedItem = { BindTarget = selectedItem }
+            });
+
+            Dependencies.Cache(beatmapTracker);
         }
 
         [SetUp]
@@ -46,20 +57,20 @@ namespace osu.Game.Tests.Visual.Multiplayer
         {
             importedSet = beatmaps.GetAllUsableBeatmapSetsEnumerable(IncludedDetails.All).First();
             Beatmap.Value = beatmaps.GetWorkingBeatmap(importedSet.Beatmaps.First());
+            selectedItem.Value = new PlaylistItem
+            {
+                Beatmap = { Value = Beatmap.Value.BeatmapInfo },
+                Ruleset = { Value = Beatmap.Value.BeatmapInfo.Ruleset },
+            };
 
-            Child = button = new MultiplayerReadyButton
+            if (button != null)
+                Remove(button);
+
+            Add(button = new MultiplayerReadyButton
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
                 Size = new Vector2(200, 50),
-                SelectedItem =
-                {
-                    Value = new PlaylistItem
-                    {
-                        Beatmap = { Value = Beatmap.Value.BeatmapInfo },
-                        Ruleset = { Value = Beatmap.Value.BeatmapInfo.Ruleset }
-                    }
-                },
                 OnReadyClick = async () =>
                 {
                     readyClickOperation = OngoingOperationTracker.BeginOperation();
@@ -73,7 +84,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                     await Client.ToggleReady();
                     readyClickOperation.Dispose();
                 }
-            };
+            });
         });
 
         [Test]

osu.Game.Tests/Visual/Multiplayer/TestSceneMultiplayerRoomManager.cs

@@ -101,7 +101,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 });
             });
 
-            AddAssert("multiplayer room joined", () => roomContainer.Client.Room != null);
+            AddUntilStep("multiplayer room joined", () => roomContainer.Client.Room != null);
         }
 
         [Test]
@@ -133,7 +133,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 });
             });
 
-            AddAssert("multiplayer room joined", () => roomContainer.Client.Room != null);
+            AddUntilStep("multiplayer room joined", () => roomContainer.Client.Room != null);
         }
 
         private TestMultiplayerRoomManager createRoomManager()

osu.Game.Tests/Visual/Multiplayer/TestScenePlaylistsSongSelect.cs

@@ -19,11 +19,11 @@ using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Rulesets.Osu.Mods;
 using osu.Game.Screens.OnlinePlay.Components;
-using osu.Game.Screens.Select;
+using osu.Game.Screens.OnlinePlay.Playlists;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
-    public class TestSceneMatchSongSelect : RoomTestScene
+    public class TestScenePlaylistsSongSelect : RoomTestScene
     {
         [Resolved]
         private BeatmapManager beatmapManager { get; set; }
@@ -32,7 +32,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
         private RulesetStore rulesets;
 
-        private TestMatchSongSelect songSelect;
+        private TestPlaylistsSongSelect songSelect;
 
         [BackgroundDependencyLoader]
         private void load(GameHost host, AudioManager audio)
@@ -87,9 +87,10 @@ namespace osu.Game.Tests.Visual.Multiplayer
             {
                 Ruleset.Value = new OsuRuleset().RulesetInfo;
                 Beatmap.SetDefault();
+                SelectedMods.Value = Array.Empty<Mod>();
             });
 
-            AddStep("create song select", () => LoadScreen(songSelect = new TestMatchSongSelect()));
+            AddStep("create song select", () => LoadScreen(songSelect = new TestPlaylistsSongSelect()));
             AddUntilStep("wait for present", () => songSelect.IsCurrentScreen());
         }
 
@@ -176,7 +177,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddAssert("item has rate 1.5", () => Precision.AlmostEquals(1.5, ((OsuModDoubleTime)Room.Playlist.First().RequiredMods[0]).SpeedChange.Value));
         }
 
-        private class TestMatchSongSelect : MatchSongSelect
+        private class TestPlaylistsSongSelect : PlaylistsSongSelect
         {
             public new MatchBeatmapDetailArea BeatmapDetails => (MatchBeatmapDetailArea)base.BeatmapDetails;
         }

osu.Game.Tests/Visual/Online/TestSceneBeatmapListingOverlay.cs

@@ -1,32 +1,81 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// 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.Overlays;
+using System.Collections.Generic;
+using System.Linq;
 using NUnit.Framework;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
+using osu.Game.Beatmaps;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Online.API.Requests.Responses;
+using osu.Game.Overlays;
+using osu.Game.Overlays.BeatmapListing;
+using osu.Game.Rulesets;
 
 namespace osu.Game.Tests.Visual.Online
 {
     public class TestSceneBeatmapListingOverlay : OsuTestScene
     {
-        protected override bool UseOnlineAPI => true;
+        private readonly List<APIBeatmapSet> setsForResponse = new List<APIBeatmapSet>();
 
-        private readonly BeatmapListingOverlay overlay;
+        private BeatmapListingOverlay overlay;
 
-        public TestSceneBeatmapListingOverlay()
+        [BackgroundDependencyLoader]
+        private void load()
         {
-            Add(overlay = new BeatmapListingOverlay());
+            Child = overlay = new BeatmapListingOverlay { State = { Value = Visibility.Visible } };
+
+            ((DummyAPIAccess)API).HandleRequest = req =>
+            {
+                if (req is SearchBeatmapSetsRequest searchBeatmapSetsRequest)
+                {
+                    searchBeatmapSetsRequest.TriggerSuccess(new SearchBeatmapSetsResponse
+                    {
+                        BeatmapSets = setsForResponse,
+                    });
+                }
+            };
         }
 
         [Test]
-        public void TestShow()
+        public void TestNoBeatmapsPlaceholder()
         {
-            AddStep("Show", overlay.Show);
+            AddStep("fetch for 0 beatmaps", () => fetchFor());
+            AddUntilStep("placeholder shown", () => overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().SingleOrDefault()?.IsPresent == true);
+
+            AddStep("fetch for 1 beatmap", () => fetchFor(CreateBeatmap(Ruleset.Value).BeatmapInfo.BeatmapSet));
+            AddUntilStep("placeholder hidden", () => !overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().Any());
+
+            AddStep("fetch for 0 beatmaps", () => fetchFor());
+            AddUntilStep("placeholder shown", () => overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().SingleOrDefault()?.IsPresent == true);
+
+            // fetch once more to ensure nothing happens in displaying placeholder again when it already is present.
+            AddStep("fetch for 0 beatmaps again", () => fetchFor());
+            AddUntilStep("placeholder shown", () => overlay.ChildrenOfType<BeatmapListingOverlay.NotFoundDrawable>().SingleOrDefault()?.IsPresent == true);
         }
 
-        [Test]
+        private void fetchFor(params BeatmapSetInfo[] beatmaps)
-        public void TestHide()
         {
-            AddStep("Hide", overlay.Hide);
+            setsForResponse.Clear();
+            setsForResponse.AddRange(beatmaps.Select(b => new TestAPIBeatmapSet(b)));
+
+            // trigger arbitrary change for fetching.
+            overlay.ChildrenOfType<BeatmapListingSearchControl>().Single().Query.TriggerChange();
+        }
+
+        private class TestAPIBeatmapSet : APIBeatmapSet
+        {
+            private readonly BeatmapSetInfo beatmapSet;
+
+            public TestAPIBeatmapSet(BeatmapSetInfo beatmapSet)
+            {
+                this.beatmapSet = beatmapSet;
+            }
+
+            public override BeatmapSetInfo ToBeatmapSet(RulesetStore rulesets) => beatmapSet;
         }
     }
 }

osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlay.cs

@@ -231,8 +231,8 @@ namespace osu.Game.Tests.Visual.Online
                 });
             });
 
-            AddAssert("shown beatmaps of current ruleset", () => overlay.Header.Picker.Difficulties.All(b => b.Beatmap.Ruleset.Equals(overlay.Header.RulesetSelector.Current.Value)));
+            AddAssert("shown beatmaps of current ruleset", () => overlay.Header.HeaderContent.Picker.Difficulties.All(b => b.Beatmap.Ruleset.Equals(overlay.Header.RulesetSelector.Current.Value)));
-            AddAssert("left-most beatmap selected", () => overlay.Header.Picker.Difficulties.First().State == BeatmapPicker.DifficultySelectorState.Selected);
+            AddAssert("left-most beatmap selected", () => overlay.Header.HeaderContent.Picker.Difficulties.First().State == BeatmapPicker.DifficultySelectorState.Selected);
         }
 
         [Test]
@@ -310,12 +310,12 @@ namespace osu.Game.Tests.Visual.Online
 
         private void downloadAssert(bool shown)
         {
-            AddAssert($"is download button {(shown ? "shown" : "hidden")}", () => overlay.Header.DownloadButtonsVisible == shown);
+            AddAssert($"is download button {(shown ? "shown" : "hidden")}", () => overlay.Header.HeaderContent.DownloadButtonsVisible == shown);
         }
 
         private class TestBeatmapSetOverlay : BeatmapSetOverlay
         {
-            public new Header Header => base.Header;
+            public new BeatmapSetHeader Header => base.Header;
         }
     }
 }

osu.Game.Tests/Visual/Online/TestSceneChatLink.cs

@@ -103,26 +103,26 @@ namespace osu.Game.Tests.Visual.Online
         private void testLinksGeneral()
         {
             addMessageWithChecks("test!");
-            addMessageWithChecks("osu.ppy.sh!");
+            addMessageWithChecks("dev.ppy.sh!");
-            addMessageWithChecks("https://osu.ppy.sh!", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("https://dev.ppy.sh!", 1, expectedActions: LinkAction.External);
             addMessageWithChecks("00:12:345 (1,2) - Test?", 1, expectedActions: LinkAction.OpenEditorTimestamp);
             addMessageWithChecks("Wiki link for tasty [[Performance Points]]", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("(osu forums)[https://osu.ppy.sh/forum] (old link format)", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("(osu forums)[https://dev.ppy.sh/forum] (old link format)", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("[https://osu.ppy.sh/home New site] (new link format)", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("[https://dev.ppy.sh/home New site] (new link format)", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("[osu forums](https://osu.ppy.sh/forum) (new link format 2)", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("[osu forums](https://dev.ppy.sh/forum) (new link format 2)", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("[https://osu.ppy.sh/home This is only a link to the new osu webpage but this is supposed to test word wrap.]", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("[https://dev.ppy.sh/home This is only a link to the new osu webpage but this is supposed to test word wrap.]", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("is now listening to [https://osu.ppy.sh/s/93523 IMAGE -MATERIAL- <Version 0>]", 1, true, expectedActions: LinkAction.OpenBeatmapSet);
+            addMessageWithChecks("is now listening to [https://dev.ppy.sh/s/93523 IMAGE -MATERIAL- <Version 0>]", 1, true, expectedActions: LinkAction.OpenBeatmapSet);
-            addMessageWithChecks("is now playing [https://osu.ppy.sh/b/252238 IMAGE -MATERIAL- <Version 0>]", 1, true, expectedActions: LinkAction.OpenBeatmap);
+            addMessageWithChecks("is now playing [https://dev.ppy.sh/b/252238 IMAGE -MATERIAL- <Version 0>]", 1, true, expectedActions: LinkAction.OpenBeatmap);
-            addMessageWithChecks("Let's (try)[https://osu.ppy.sh/home] [https://osu.ppy.sh/b/252238 multiple links] https://osu.ppy.sh/home", 3,
+            addMessageWithChecks("Let's (try)[https://dev.ppy.sh/home] [https://dev.ppy.sh/b/252238 multiple links] https://dev.ppy.sh/home", 3,
                 expectedActions: new[] { LinkAction.External, LinkAction.OpenBeatmap, LinkAction.External });
-            addMessageWithChecks("[https://osu.ppy.sh/home New link format with escaped [and \\[ paired] braces]", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("[https://dev.ppy.sh/home New link format with escaped [and \\[ paired] braces]", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("[Markdown link format with escaped [and \\[ paired] braces](https://osu.ppy.sh/home)", 1, expectedActions: LinkAction.External);
+            addMessageWithChecks("[Markdown link format with escaped [and \\[ paired] braces](https://dev.ppy.sh/home)", 1, expectedActions: LinkAction.External);
-            addMessageWithChecks("(Old link format with escaped (and \\( paired) parentheses)[https://osu.ppy.sh/home] and [[also a rogue wiki link]]", 2, expectedActions: new[] { LinkAction.External, LinkAction.External });
+            addMessageWithChecks("(Old link format with escaped (and \\( paired) parentheses)[https://dev.ppy.sh/home] and [[also a rogue wiki link]]", 2, expectedActions: new[] { LinkAction.External, LinkAction.External });
             // note that there's 0 links here (they get removed if a channel is not found)
             addMessageWithChecks("#lobby or #osu would be blue (and work) in the ChatDisplay test (when a proper ChatOverlay is present).");
             addMessageWithChecks("I am important!", 0, false, true);
             addMessageWithChecks("feels important", 0, true, true);
-            addMessageWithChecks("likes to post this [https://osu.ppy.sh/home link].", 1, true, true, expectedActions: LinkAction.External);
+            addMessageWithChecks("likes to post this [https://dev.ppy.sh/home link].", 1, true, true, expectedActions: LinkAction.External);
             addMessageWithChecks("Join my multiplayer game osump://12346.", 1, expectedActions: LinkAction.JoinMultiplayerMatch);
             addMessageWithChecks("Join my [multiplayer game](osump://12346).", 1, expectedActions: LinkAction.JoinMultiplayerMatch);
             addMessageWithChecks("Join my [#english](osu://chan/#english).", 1, expectedActions: LinkAction.OpenChannel);
@@ -136,9 +136,9 @@ namespace osu.Game.Tests.Visual.Online
             int echoCounter = 0;
 
             addEchoWithWait("sent!", "received!");
-            addEchoWithWait("https://osu.ppy.sh/home", null, 500);
+            addEchoWithWait("https://dev.ppy.sh/home", null, 500);
-            addEchoWithWait("[https://osu.ppy.sh/forum let's try multiple words too!]");
+            addEchoWithWait("[https://dev.ppy.sh/forum let's try multiple words too!]");
-            addEchoWithWait("(long loading times! clickable while loading?)[https://osu.ppy.sh/home]", null, 5000);
+            addEchoWithWait("(long loading times! clickable while loading?)[https://dev.ppy.sh/home]", null, 5000);
 
             void addEchoWithWait(string text, string completeText = null, double delay = 250)
             {

osu.Game.Tests/Visual/Online/TestSceneFullscreenOverlay.cs

@@ -41,7 +41,7 @@ namespace osu.Game.Tests.Visual.Online
         private class TestFullscreenOverlay : FullscreenOverlay<OverlayHeader>
         {
             public TestFullscreenOverlay()
-                : base(OverlayColourScheme.Pink, null)
+                : base(OverlayColourScheme.Pink)
             {
                 Children = new Drawable[]
                 {
@@ -52,6 +52,17 @@ namespace osu.Game.Tests.Visual.Online
                     },
                 };
             }
+
+            protected override OverlayHeader CreateHeader() => new TestHeader();
+
+            internal class TestHeader : OverlayHeader
+            {
+                protected override OverlayTitle CreateTitle() => new TestTitle();
+
+                internal class TestTitle : OverlayTitle
+                {
+                }
+            }
         }
     }
 }

osu.Game.Tests/Visual/Online/TestSceneOnlineBeatmapListingOverlay.cs

@@ -0,0 +1,33 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Overlays;
+using NUnit.Framework;
+
+namespace osu.Game.Tests.Visual.Online
+{
+    [Description("uses online API")]
+    public class TestSceneOnlineBeatmapListingOverlay : OsuTestScene
+    {
+        protected override bool UseOnlineAPI => true;
+
+        private readonly BeatmapListingOverlay overlay;
+
+        public TestSceneOnlineBeatmapListingOverlay()
+        {
+            Add(overlay = new BeatmapListingOverlay());
+        }
+
+        [Test]
+        public void TestShow()
+        {
+            AddStep("Show", overlay.Show);
+        }
+
+        [Test]
+        public void TestHide()
+        {
+            AddStep("Hide", overlay.Hide);
+        }
+    }
+}

osu.Game.Tests/Visual/Online/TestSceneRankingsOverlay.cs

@@ -25,7 +25,7 @@ namespace osu.Game.Tests.Visual.Online
             Add(rankingsOverlay = new TestRankingsOverlay
             {
                 Country = { BindTarget = countryBindable },
-                Scope = { BindTarget = scope },
+                Header = { Current = { BindTarget = scope } },
             });
         }
 
@@ -65,8 +65,6 @@ namespace osu.Game.Tests.Visual.Online
         private class TestRankingsOverlay : RankingsOverlay
         {
             public new Bindable<Country> Country => base.Country;
-
-            public new Bindable<RankingsScope> Scope => base.Scope;
         }
     }
 }

osu.Game.Tests/Visual/Online/TestSceneStandAloneChatDisplay.cs

@@ -8,16 +8,16 @@ using osu.Game.Users;
 using osuTK;
 using System;
 using System.Linq;
+using NUnit.Framework;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays.Chat;
+using osuTK.Input;
 
 namespace osu.Game.Tests.Visual.Online
 {
-    public class TestSceneStandAloneChatDisplay : OsuTestScene
+    public class TestSceneStandAloneChatDisplay : OsuManualInputManagerTestScene
     {
-        private readonly Channel testChannel = new Channel();
-
         private readonly User admin = new User
         {
             Username = "HappyStick",
@@ -46,92 +46,97 @@ namespace osu.Game.Tests.Visual.Online
         [Cached]
         private ChannelManager channelManager = new ChannelManager();
 
-        private readonly TestStandAloneChatDisplay chatDisplay;
+        private TestStandAloneChatDisplay chatDisplay;
-        private readonly TestStandAloneChatDisplay chatDisplay2;
+        private int messageIdSequence;
+
+        private Channel testChannel;
 
         public TestSceneStandAloneChatDisplay()
         {
             Add(channelManager);
-
-            Add(chatDisplay = new TestStandAloneChatDisplay
-            {
-                Anchor = Anchor.CentreLeft,
-                Origin = Anchor.CentreLeft,
-                Margin = new MarginPadding(20),
-                Size = new Vector2(400, 80)
-            });
-
-            Add(chatDisplay2 = new TestStandAloneChatDisplay(true)
-            {
-                Anchor = Anchor.CentreRight,
-                Origin = Anchor.CentreRight,
-                Margin = new MarginPadding(20),
-                Size = new Vector2(400, 150)
-            });
         }
 
-        protected override void LoadComplete()
+        [SetUp]
+        public void SetUp() => Schedule(() =>
         {
-            base.LoadComplete();
+            messageIdSequence = 0;
+            channelManager.CurrentChannel.Value = testChannel = new Channel();
 
-            channelManager.CurrentChannel.Value = testChannel;
+            Children = new[]
+            {
+                chatDisplay = new TestStandAloneChatDisplay
+                {
+                    Anchor = Anchor.CentreLeft,
+                    Origin = Anchor.CentreLeft,
+                    Margin = new MarginPadding(20),
+                    Size = new Vector2(400, 80),
+                    Channel = { Value = testChannel },
+                },
+                new TestStandAloneChatDisplay(true)
+                {
+                    Anchor = Anchor.CentreRight,
+                    Origin = Anchor.CentreRight,
+                    Margin = new MarginPadding(20),
+                    Size = new Vector2(400, 150),
+                    Channel = { Value = testChannel },
+                }
+            };
+        });
 
-            chatDisplay.Channel.Value = testChannel;
+        [Test]
-            chatDisplay2.Channel.Value = testChannel;
+        public void TestManyMessages()
-
+        {
-            int sequence = 0;
+            AddStep("message from admin", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
-
-            AddStep("message from admin", () => testChannel.AddNewMessages(new Message(sequence++)
             {
                 Sender = admin,
                 Content = "I am a wang!"
             }));
 
-            AddStep("message from team red", () => testChannel.AddNewMessages(new Message(sequence++)
+            AddStep("message from team red", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
             {
                 Sender = redUser,
                 Content = "I am team red."
             }));
 
-            AddStep("message from team red", () => testChannel.AddNewMessages(new Message(sequence++)
+            AddStep("message from team red", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
             {
                 Sender = redUser,
                 Content = "I plan to win!"
             }));
 
-            AddStep("message from team blue", () => testChannel.AddNewMessages(new Message(sequence++)
+            AddStep("message from team blue", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
             {
                 Sender = blueUser,
                 Content = "Not on my watch. Prepare to eat saaaaaaaaaand. Lots and lots of saaaaaaand."
             }));
 
-            AddStep("message from admin", () => testChannel.AddNewMessages(new Message(sequence++)
+            AddStep("message from admin", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
             {
                 Sender = admin,
                 Content = "Okay okay, calm down guys. Let's do this!"
             }));
 
-            AddStep("message from long username", () => testChannel.AddNewMessages(new Message(sequence++)
+            AddStep("message from long username", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
             {
                 Sender = longUsernameUser,
                 Content = "Hi guys, my new username is lit!"
             }));
 
-            AddStep("message with new date", () => testChannel.AddNewMessages(new Message(sequence++)
+            AddStep("message with new date", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
             {
                 Sender = longUsernameUser,
                 Content = "Message from the future!",
                 Timestamp = DateTimeOffset.Now
             }));
 
-            AddUntilStep("ensure still scrolled to bottom", () => chatDisplay.ScrolledToBottom);
+            checkScrolledToBottom();
 
             const int messages_per_call = 10;
             AddRepeatStep("add many messages", () =>
             {
                 for (int i = 0; i < messages_per_call; i++)
                 {
-                    testChannel.AddNewMessages(new Message(sequence++)
+                    testChannel.AddNewMessages(new Message(messageIdSequence++)
                     {
                         Sender = longUsernameUser,
                         Content = "Many messages! " + Guid.NewGuid(),
@@ -153,9 +158,133 @@ namespace osu.Game.Tests.Visual.Online
                 return true;
             });
 
-            AddUntilStep("ensure still scrolled to bottom", () => chatDisplay.ScrolledToBottom);
+            checkScrolledToBottom();
         }
 
+        /// <summary>
+        /// Tests that when a message gets wrapped by the chat display getting contracted while scrolled to bottom, the chat will still keep scrolling down.
+        /// </summary>
+        [Test]
+        public void TestMessageWrappingKeepsAutoScrolling()
+        {
+            fillChat();
+
+            // send message with short words for text wrapping to occur when contracting chat.
+            sendMessage();
+
+            AddStep("contract chat", () => chatDisplay.Width -= 100);
+            checkScrolledToBottom();
+
+            AddStep("send another message", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
+            {
+                Sender = admin,
+                Content = "As we were saying...",
+            }));
+
+            checkScrolledToBottom();
+        }
+
+        [Test]
+        public void TestUserScrollOverride()
+        {
+            fillChat();
+
+            sendMessage();
+            checkScrolledToBottom();
+
+            AddStep("User scroll up", () =>
+            {
+                InputManager.MoveMouseTo(chatDisplay.ScreenSpaceDrawQuad.Centre);
+                InputManager.PressButton(MouseButton.Left);
+                InputManager.MoveMouseTo(chatDisplay.ScreenSpaceDrawQuad.Centre + new Vector2(0, chatDisplay.ScreenSpaceDrawQuad.Height));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            checkNotScrolledToBottom();
+            sendMessage();
+            checkNotScrolledToBottom();
+
+            AddRepeatStep("User scroll to bottom", () =>
+            {
+                InputManager.MoveMouseTo(chatDisplay.ScreenSpaceDrawQuad.Centre);
+                InputManager.PressButton(MouseButton.Left);
+                InputManager.MoveMouseTo(chatDisplay.ScreenSpaceDrawQuad.Centre - new Vector2(0, chatDisplay.ScreenSpaceDrawQuad.Height));
+                InputManager.ReleaseButton(MouseButton.Left);
+            }, 5);
+
+            checkScrolledToBottom();
+            sendMessage();
+            checkScrolledToBottom();
+        }
+
+        [Test]
+        public void TestLocalEchoMessageResetsScroll()
+        {
+            fillChat();
+
+            sendMessage();
+            checkScrolledToBottom();
+
+            AddStep("User scroll up", () =>
+            {
+                InputManager.MoveMouseTo(chatDisplay.ScreenSpaceDrawQuad.Centre);
+                InputManager.PressButton(MouseButton.Left);
+                InputManager.MoveMouseTo(chatDisplay.ScreenSpaceDrawQuad.Centre + new Vector2(0, chatDisplay.ScreenSpaceDrawQuad.Height));
+                InputManager.ReleaseButton(MouseButton.Left);
+            });
+
+            checkNotScrolledToBottom();
+            sendMessage();
+            checkNotScrolledToBottom();
+
+            sendLocalMessage();
+            checkScrolledToBottom();
+
+            sendMessage();
+            checkScrolledToBottom();
+        }
+
+        private void fillChat()
+        {
+            AddStep("fill chat", () =>
+            {
+                for (int i = 0; i < 10; i++)
+                {
+                    testChannel.AddNewMessages(new Message(messageIdSequence++)
+                    {
+                        Sender = longUsernameUser,
+                        Content = $"some stuff {Guid.NewGuid()}",
+                    });
+                }
+            });
+
+            checkScrolledToBottom();
+        }
+
+        private void sendMessage()
+        {
+            AddStep("send lorem ipsum", () => testChannel.AddNewMessages(new Message(messageIdSequence++)
+            {
+                Sender = longUsernameUser,
+                Content = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce et bibendum velit.",
+            }));
+        }
+
+        private void sendLocalMessage()
+        {
+            AddStep("send local echo", () => testChannel.AddLocalEcho(new LocalEchoMessage
+            {
+                Sender = longUsernameUser,
+                Content = "This is a local echo message.",
+            }));
+        }
+
+        private void checkScrolledToBottom() =>
+            AddUntilStep("is scrolled to bottom", () => chatDisplay.ScrolledToBottom);
+
+        private void checkNotScrolledToBottom() =>
+            AddUntilStep("not scrolled to bottom", () => !chatDisplay.ScrolledToBottom);
+
         private class TestStandAloneChatDisplay : StandAloneChatDisplay
         {
             public TestStandAloneChatDisplay(bool textbox = false)
@@ -165,7 +294,7 @@ namespace osu.Game.Tests.Visual.Online
 
             protected DrawableChannel DrawableChannel => InternalChildren.OfType<DrawableChannel>().First();
 
-            protected OsuScrollContainer ScrollContainer => (OsuScrollContainer)((Container)DrawableChannel.Child).Child;
+            protected UserTrackingScrollContainer ScrollContainer => (UserTrackingScrollContainer)((Container)DrawableChannel.Child).Child;
 
             public FillFlowContainer FillFlow => (FillFlowContainer)ScrollContainer.Child;
 

osu.Game.Tests/Visual/Online/TestSceneVotePill.cs

@@ -7,6 +7,8 @@ using osu.Game.Overlays.Comments;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Framework.Allocation;
 using osu.Game.Overlays;
+using osu.Framework.Graphics.Shapes;
+using osu.Framework.Graphics.Containers;
 
 namespace osu.Game.Tests.Visual.Online
 {
@@ -16,13 +18,33 @@ namespace osu.Game.Tests.Visual.Online
         [Cached]
         private readonly OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Blue);
 
-        private VotePill votePill;
+        [Cached]
+        private LoginOverlay login;
+
+        private TestPill votePill;
+        private readonly Container pillContainer;
+
+        public TestSceneVotePill()
+        {
+            AddRange(new Drawable[]
+            {
+                pillContainer = new Container
+                {
+                    Anchor = Anchor.Centre,
+                    Origin = Anchor.Centre,
+                    AutoSizeAxes = Axes.Both
+                },
+                login = new LoginOverlay()
+            });
+        }
 
         [Test]
         public void TestUserCommentPill()
         {
+            AddStep("Hide login overlay", () => login.Hide());
             AddStep("Log in", logIn);
             AddStep("User comment", () => addVotePill(getUserComment()));
+            AddAssert("Background is transparent", () => votePill.Background.Alpha == 0);
             AddStep("Click", () => votePill.Click());
             AddAssert("Not loading", () => !votePill.IsLoading);
         }
@@ -30,8 +52,10 @@ namespace osu.Game.Tests.Visual.Online
         [Test]
         public void TestRandomCommentPill()
         {
+            AddStep("Hide login overlay", () => login.Hide());
             AddStep("Log in", logIn);
             AddStep("Random comment", () => addVotePill(getRandomComment()));
+            AddAssert("Background is visible", () => votePill.Background.Alpha == 1);
             AddStep("Click", () => votePill.Click());
             AddAssert("Loading", () => votePill.IsLoading);
         }
@@ -39,10 +63,11 @@ namespace osu.Game.Tests.Visual.Online
         [Test]
         public void TestOfflineRandomCommentPill()
         {
+            AddStep("Hide login overlay", () => login.Hide());
             AddStep("Log out", API.Logout);
             AddStep("Random comment", () => addVotePill(getRandomComment()));
             AddStep("Click", () => votePill.Click());
-            AddAssert("Not loading", () => !votePill.IsLoading);
+            AddAssert("Login overlay is visible", () => login.State.Value == Visibility.Visible);
         }
 
         private void logIn() => API.Login("localUser", "password");
@@ -63,12 +88,22 @@ namespace osu.Game.Tests.Visual.Online
 
         private void addVotePill(Comment comment)
         {
-            Clear();
+            pillContainer.Clear();
-            Add(votePill = new VotePill(comment)
+            pillContainer.Child = votePill = new TestPill(comment)
             {
                 Anchor = Anchor.Centre,
                 Origin = Anchor.Centre,
-            });
+            };
+        }
+
+        private class TestPill : VotePill
+        {
+            public new Box Background => base.Background;
+
+            public TestPill(Comment comment)
+                : base(comment)
+            {
+            }
         }
     }
 }

osu.Game.Tests/Visual/Playlists/TestScenePlaylistsLoungeSubScreen.cs

@@ -4,7 +4,6 @@
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
-using osu.Framework.Graphics;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
 using osu.Game.Graphics.Containers;
@@ -28,12 +27,7 @@ namespace osu.Game.Tests.Visual.Playlists
         {
             base.SetUpSteps();
 
-            AddStep("push screen", () => LoadScreen(loungeScreen = new PlaylistsLoungeSubScreen
+            AddStep("push screen", () => LoadScreen(loungeScreen = new PlaylistsLoungeSubScreen()));
-            {
-                Anchor = Anchor.Centre,
-                Origin = Anchor.Centre,
-                Width = 0.5f,
-            }));
 
             AddUntilStep("wait for present", () => loungeScreen.IsCurrentScreen());
         }