Merge branch 'master' of https://hub.fastgit.org/ppy/osu into auto-restart

2025-08-03 06:36:31 +09:00 · 2021-08-11 20:18:05 +08:00
parent 510fc93d76 ce7ff04512
commit 4706dcf525
1001 changed files with 25311 additions and 7809 deletions
--- a/.config/dotnet-tools.json
+++ b/.config/dotnet-tools.json
@ -2,12 +2,6 @@
  "version": 1,
  "isRoot": true,
  "tools": {
-    "cake.tool": {
-      "version": "0.35.0",
-      "commands": [
-        "dotnet-cake"
-      ]
-    },
    "dotnet-format": {
      "version": "3.1.37601",
      "commands": [
@ -20,23 +14,23 @@
        "jb"
      ]
    },
-    "nvika": {
-      "version": "2.0.0",
+    "smoogipoo.nvika": {
+      "version": "1.0.1",
      "commands": [
        "nvika"
      ]
    },
    "codefilesanity": {
-      "version": "15.0.0",
+      "version": "0.0.36",
      "commands": [
        "CodeFileSanity"
      ]
    },
    "ppy.localisationanalyser.tools": {
-      "version": "2021.524.0",
+      "version": "2021.725.0",
      "commands": [
        "localisation"
      ]
    }
  }
-}
+}
--- a/.editorconfig
+++ b/.editorconfig
@ -157,7 +157,7 @@ csharp_style_unused_value_assignment_preference = discard_variable:warning

 #Style - variable declaration
 csharp_style_inlined_variable_declaration = true:warning
-csharp_style_deconstructed_variable_declaration = true:warning
+csharp_style_deconstructed_variable_declaration = false:silent

 #Style - other C# 7.x features
 dotnet_style_prefer_inferred_tuple_names = true:warning
@ -168,8 +168,8 @@ dotnet_style_prefer_is_null_check_over_reference_equality_method = true:silent
 #Style - C# 8 features
 csharp_prefer_static_local_function = true:warning
 csharp_prefer_simple_using_statement = true:silent
-csharp_style_prefer_index_operator = true:warning
-csharp_style_prefer_range_operator = true:warning
+csharp_style_prefer_index_operator = false:silent
+csharp_style_prefer_range_operator = false:silent
 csharp_style_prefer_switch_expression = false:none

 #Supressing roslyn built-in analyzers
@ -190,3 +190,5 @@ dotnet_diagnostic.CA2225.severity = none

 # Banned APIs
 dotnet_diagnostic.RS0030.severity = error
+
+dotnet_diagnostic.OLOC001.license_header = // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.\n// See the LICENCE file in the repository root for full licence text.
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@ -0,0 +1,94 @@
+on: [push, pull_request]
+name: Continuous Integration
+
+jobs:
+  test:
+    name: Test
+    runs-on: ${{matrix.os.fullname}}
+    env:
+      OSU_EXECUTION_MODE: ${{matrix.threadingMode}}
+    strategy:
+       fail-fast: false
+       matrix:
+          os:
+            - { prettyname: Windows, fullname: windows-latest }
+            - { prettyname: macOS, fullname: macos-latest }
+            - { prettyname: Linux, fullname: ubuntu-latest }
+          threadingMode: ['SingleThread', 'MultiThreaded']
+    timeout-minutes: 60
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install .NET 5.0.x
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "5.0.x"
+
+      # FIXME: libavformat is not included in Ubuntu. Let's fix that.
+      # https://github.com/ppy/osu-framework/issues/4349
+      # Remove this once https://github.com/actions/virtual-environments/issues/3306 has been resolved.
+      - name: Install libavformat-dev
+        if: ${{matrix.os.fullname == 'ubuntu-latest'}}
+        run: |
+         sudo apt-get update && \
+         sudo apt-get -y install libavformat-dev
+
+      - name: Compile
+        run: dotnet build -c Debug -warnaserror osu.Desktop.slnf
+
+      - name: Test
+        run: dotnet test $pwd/*.Tests/bin/Debug/*/*.Tests.dll --logger "trx;LogFileName=TestResults-${{matrix.os.prettyname}}-${{matrix.threadingMode}}.trx"
+        shell: pwsh
+
+      # Attempt to upload results even if test fails.
+      # https://docs.github.com/en/actions/reference/context-and-expression-syntax-for-github-actions#always
+      - name: Upload Test Results
+        uses: actions/upload-artifact@v2
+        if: ${{ always() }}
+        with:
+          name: osu-test-results-${{matrix.os.prettyname}}-${{matrix.threadingMode}}
+          path: ${{github.workspace}}/TestResults/TestResults-${{matrix.os.prettyname}}-${{matrix.threadingMode}}.trx
+
+  inspect-code:
+    name: Code Quality
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      # FIXME: Tools won't run in .NET 5.0 unless you install 3.1.x LTS side by side.
+      # https://itnext.io/how-to-support-multiple-net-sdks-in-github-actions-workflows-b988daa884e
+      - name: Install .NET 3.1.x LTS
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "3.1.x"
+
+      - name: Install .NET 5.0.x
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: "5.0.x"
+
+      - name: Restore Tools
+        run: dotnet tool restore
+
+      - name: Restore Packages
+        run: dotnet restore
+
+      - name: CodeFileSanity
+        run: |
+          # TODO: Add ignore filters and GitHub Workflow Command Reporting in CFS. That way we don't have to do this workaround.
+          # FIXME: Suppress warnings from templates project
+          dotnet codefilesanity | while read -r line; do
+            echo "::warning::$line"
+          done
+
+      # Temporarily disabled due to test failures, but it won't work anyway until the tool is upgraded.
+      # - name: .NET Format (Dry Run)
+      #   run: dotnet format --dry-run --check
+
+      - name: InspectCode
+        run: dotnet jb inspectcode $(pwd)/osu.Desktop.slnf --output=$(pwd)/inspectcodereport.xml --cachesDir=$(pwd)/inspectcode --verbosity=WARN
+
+      - name: NVika
+        run: dotnet nvika parsereport "${{github.workspace}}/inspectcodereport.xml" --treatwarningsaserrors
--- a/.github/workflows/report-nunit.yml
+++ b/.github/workflows/report-nunit.yml
@ -0,0 +1,32 @@
+# This is a workaround to allow PRs to report their coverage. This will run inside the base repository.
+# See:
+#   * https://github.com/dorny/test-reporter#recommended-setup-for-public-repositories
+#   * https://docs.github.com/en/actions/reference/authentication-in-a-workflow#permissions-for-the-github_token
+name: Annotate CI run with test results
+on:
+  workflow_run:
+    workflows: ["Continuous Integration"]
+    types:
+      - completed
+jobs:
+  annotate:
+    name: Annotate CI run with test results
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion != 'cancelled' }}
+    strategy:
+       fail-fast: false
+       matrix:
+          os:
+            - { prettyname: Windows }
+            - { prettyname: macOS }
+            - { prettyname: Linux }
+          threadingMode: ['SingleThread', 'MultiThreaded']
+    timeout-minutes: 5
+    steps:
+      - name: Annotate CI run with test results
+        uses: dorny/test-reporter@v1.4.2
+        with:
+          artifact: osu-test-results-${{matrix.os.prettyname}}-${{matrix.threadingMode}}
+          name: Test Results (${{matrix.os.prettyname}}, ${{matrix.threadingMode}})
+          path: "*.trx"
+          reporter: dotnet-trx
--- a/.gitignore
+++ b/.gitignore
@ -336,3 +336,6 @@ inspectcode
 /BenchmarkDotNet.Artifacts

 *.GeneratedMSBuildEditorConfig.editorconfig
+
+# Fody (pulled in by Realm) - schema file
+FodyWeavers.xsd
--- a/.idea/.idea.osu.Desktop/.idea/dataSources.xml
+++ b/.idea/.idea.osu.Desktop/.idea/dataSources.xml
@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="DataSourceManagerImpl" format="xml" multifile-model="true">
-    <data-source source="LOCAL" name="osu-client-sqlite" uuid="1aa4b9be-cd8d-47ae-8186-30a13cd724a5">
-      <driver-ref>sqlite.xerial</driver-ref>
-      <synchronize>true</synchronize>
-      <jdbc-driver>org.sqlite.JDBC</jdbc-driver>
-      <jdbc-url>jdbc:sqlite:$USER_HOME$/.local/share/osu/client.db</jdbc-url>
-      <driver-properties>
-        <property name="enable_load_extension" value="true" />
-      </driver-properties>
-    </data-source>
-  </component>
-</project>
--- a/test.run.xml
+++ b/test.run.xml
@ -0,0 +1,7 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Dual client test" type="CompoundRunConfigurationType">
+    <toRun name="osu!" type="DotNetProject" />
+    <toRun name="osu! (Second Client)" type="DotNetProject" />
+    <method v="2" />
+  </configuration>
+</component>
--- a/Client).run.xml
+++ b/Client).run.xml
@ -0,0 +1,20 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="osu! (Second Client)" type="DotNetProject" factoryName=".NET Project" folderName="osu!" activateToolWindowBeforeRun="false">
+    <option name="EXE_PATH" value="$PROJECT_DIR$/osu.Desktop/bin/Debug/net5.0/osu!.dll" />
+    <option name="PROGRAM_PARAMETERS" value="--debug-client-id=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" />
+    <option name="RUNTIME_ARGUMENTS" value="" />
+    <option name="PROJECT_PATH" value="$PROJECT_DIR$/osu.Desktop/osu.Desktop.csproj" />
+    <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+    <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="net5.0" />
+    <method v="2">
+      <option name="Build" />
+    </method>
+  </configuration>
+</component>
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@ -113,20 +113,6 @@
            "cwd": "${workspaceRoot}",
            "preLaunchTask": "Build benchmarks",
            "console": "internalConsole"
-        },
-        {
-            "name": "Cake: Debug Script",
-            "type": "coreclr",
-            "request": "launch",
-            "program": "${workspaceRoot}/build/tools/Cake.CoreCLR/0.30.0/Cake.dll",
-            "args": [
-                "${workspaceRoot}/build/build.cake",
-                "--debug",
-                "--verbosity=diagnostic"
-            ],
-            "cwd": "${workspaceRoot}/build",
-            "stopAtEntry": true,
-            "externalConsole": false
        }
    ]
 }
--- a/CodeAnalysis/BannedSymbols.txt
+++ b/CodeAnalysis/BannedSymbols.txt
@ -3,6 +3,7 @@ M:System.Object.Equals(System.Object)~System.Boolean;Don't use object.Equals. Us
 M:System.ValueType.Equals(System.Object)~System.Boolean;Don't use object.Equals(Fallbacks to ValueType). Use IEquatable<T> or EqualityComparer<T>.Default instead.
 M:System.Nullable`1.Equals(System.Object)~System.Boolean;Use == instead.
 T:System.IComparable;Don't use non-generic IComparable. Use generic version instead.
+T:SixLabors.ImageSharp.IDeepCloneable`1;Use osu.Game.Utils.IDeepCloneable<T> instead.
 M:osu.Framework.Graphics.Sprites.SpriteText.#ctor;Use OsuSpriteText.
 M:osu.Framework.Bindables.IBindableList`1.GetBoundCopy();Fails on iOS. Use manual ctor + BindTo instead. (see https://github.com/mono/mono/issues/19900)
 T:Microsoft.EntityFrameworkCore.Internal.EnumerableExtensions;Don't use internal extension methods.
--- a/FodyWeavers.xml
+++ b/FodyWeavers.xml
@ -0,0 +1,3 @@
+<Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
+  <Realm DisableAnalytics="true" />
+</Weavers>
--- a/InspectCode.ps1
+++ b/InspectCode.ps1
@ -1,27 +1,11 @@
-[CmdletBinding()]
-Param(
-    [string]$Target,
-    [string]$Configuration,
-    [ValidateSet("Quiet", "Minimal", "Normal", "Verbose", "Diagnostic")]
-    [string]$Verbosity,
-    [switch]$ShowDescription,
-    [Alias("WhatIf", "Noop")]
-    [switch]$DryRun,
-    [Parameter(Position = 0, Mandatory = $false, ValueFromRemainingArguments = $true)]
-    [string[]]$ScriptArgs
-)
-
-# Build Cake arguments
-$cakeArguments = "";
-if ($Target) { $cakeArguments += "-target=$Target" }
-if ($Configuration) { $cakeArguments += "-configuration=$Configuration" }
-if ($Verbosity) { $cakeArguments += "-verbosity=$Verbosity" }
-if ($ShowDescription) { $cakeArguments += "-showdescription" }
-if ($DryRun) { $cakeArguments += "-dryrun" }
-if ($Experimental) { $cakeArguments += "-experimental" }
-$cakeArguments += $ScriptArgs
-
 dotnet tool restore
-dotnet cake ./build/InspectCode.cake --bootstrap
-dotnet cake ./build/InspectCode.cake $cakeArguments
-exit $LASTEXITCODE
+
+# Temporarily disabled until the tool is upgraded to 5.0.
+  # The version specified in .config/dotnet-tools.json (3.1.37601) won't run on .NET hosts >=5.0.7.
+  # - cmd: dotnet format --dry-run --check
+
+dotnet CodeFileSanity
+dotnet jb inspectcode "osu.Desktop.slnf" --output="inspectcodereport.xml" --caches-home="inspectcode" --verbosity=WARN
+dotnet nvika parsereport "inspectcodereport.xml" --treatwarningsaserrors
+
+exit $LASTEXITCODE
--- a/InspectCode.sh
+++ b/InspectCode.sh
@ -0,0 +1,6 @@
+#!/bin/bash
+
+dotnet tool restore
+dotnet CodeFileSanity
+dotnet jb inspectcode "osu.Desktop.slnf" --output="inspectcodereport.xml" --caches-home="inspectcode" --verbosity=WARN
+dotnet nvika parsereport "inspectcodereport.xml" --treatwarningsaserrors
--- a/README.md
+++ b/README.md
@ -4,14 +4,14 @@

 # osu!

-[![Build status](https://ci.appveyor.com/api/projects/status/u2p01nx7l6og8buh?svg=true)](https://ci.appveyor.com/project/peppy/osu)
+[![Build status](https://github.com/ppy/osu/actions/workflows/ci.yml/badge.svg?branch=master&event=push)](https://github.com/ppy/osu/actions/workflows/ci.yml)
 [![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)

 A free-to-win rhythm game. Rhythm is just a *click* away!

-The future of [osu!](https://osu.ppy.sh) and the beginning of an open era! Commonly known by the codename *osu!lazer*. Pew pew.
+The future of [osu!](https://osu.ppy.sh) and the beginning of an open era! Currently known by and released under the codename "*lazer*". As in sharper than cutting-edge.

 ## Status

@ -23,7 +23,7 @@ We are accepting bug reports (please report with as much detail as possible and

 - Detailed release changelogs are available on the [official osu! site](https://osu.ppy.sh/home/changelog/lazer).
 - You can learn more about our approach to [project management](https://github.com/ppy/osu/wiki/Project-management).
- Read peppy's [latest blog post](https://blog.ppy.sh/a-definitive-lazer-faq/) exploring where lazer is currently and the roadmap going forward.
+- Read peppy's [blog post](https://blog.ppy.sh/a-definitive-lazer-faq/) exploring where the project is currently and the roadmap going forward.

 ## Running osu!

@ -43,7 +43,7 @@ If your platform is not listed above, there is still a chance you can manually b

 osu! is designed to have extensible modular gameplay modes, called "rulesets". Building one of these allows a developer to harness the power of osu! for their own game style. To get started working on a ruleset, we have some templates available [here](https://github.com/ppy/osu/tree/master/Templates).

-You can see some examples of custom rulesets by visiting the [custom ruleset directory](https://github.com/ppy/osu/issues/5852).
+You can see some examples of custom rulesets by visiting the [custom ruleset directory](https://github.com/ppy/osu/discussions/13096).

 ## Developing osu!

--- a/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform.Tests/osu.Game.Rulesets.EmptyFreeform.Tests.csproj
+++ b/Templates/Rulesets/ruleset-empty/osu.Game.Rulesets.EmptyFreeform.Tests/osu.Game.Rulesets.EmptyFreeform.Tests.csproj
@ -12,7 +12,7 @@
    <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
    <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
  </ItemGroup>
  <ItemGroup>
--- a/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon.Tests/osu.Game.Rulesets.Pippidon.Tests.csproj
+++ b/Templates/Rulesets/ruleset-example/osu.Game.Rulesets.Pippidon.Tests/osu.Game.Rulesets.Pippidon.Tests.csproj
@ -12,7 +12,7 @@
    <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
    <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
  </ItemGroup>
  <ItemGroup>
--- a/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling.Tests/osu.Game.Rulesets.EmptyScrolling.Tests.csproj
+++ b/Templates/Rulesets/ruleset-scrolling-empty/osu.Game.Rulesets.EmptyScrolling.Tests/osu.Game.Rulesets.EmptyScrolling.Tests.csproj
@ -12,7 +12,7 @@
    <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
    <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
  </ItemGroup>
  <ItemGroup>
--- a/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon.Tests/osu.Game.Rulesets.Pippidon.Tests.csproj
+++ b/Templates/Rulesets/ruleset-scrolling-example/osu.Game.Rulesets.Pippidon.Tests/osu.Game.Rulesets.Pippidon.Tests.csproj
@ -12,7 +12,7 @@
    <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
    <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
  </ItemGroup>
  <ItemGroup>
--- a/appveyor.yml
+++ b/appveyor.yml
@ -1,24 +1,27 @@
 clone_depth: 1
 version: '{branch}-{build}'
 image: Visual Studio 2019
+cache:
+  - '%LOCALAPPDATA%\NuGet\v3-cache -> appveyor.yml'
+
 dotnet_csproj:
  patch: true
  file: 'osu.Game\osu.Game.csproj' # Use wildcard when it's able to exclude Xamarin projects
  version: '0.0.{build}'
-cache:
-  - '%LOCALAPPDATA%\NuGet\v3-cache -> appveyor.yml'
+
 before_build:
-  - ps: dotnet --info # Useful when version mismatch between CI and local
-  - ps: nuget restore -verbosity quiet # Only nuget.exe knows both new (.NET Core) and old (Xamarin) projects
+  - cmd: dotnet --info # Useful when version mismatch between CI and local
+  - cmd: nuget restore -verbosity quiet # Only nuget.exe knows both new (.NET Core) and old (Xamarin) projects
+
 build:
  project: osu.sln
  parallel: true
  verbosity: minimal
  publish_nuget: true
+
 after_build:
-  - ps: dotnet tool restore
-  - ps: dotnet format --dry-run --check
  - ps: .\InspectCode.ps1
+
 test:
  assemblies:
    except:
--- a/build/Desktop.proj
+++ b/build/Desktop.proj
@ -1,17 +0,0 @@
-<Project Sdk="Microsoft.Build.Traversal">
-  <ItemGroup>
-    <ProjectReference Include="..\osu.Desktop\osu.Desktop.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Catch.Tests\osu.Game.Rulesets.Catch.Tests.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Catch\osu.Game.Rulesets.Catch.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Mania.Tests\osu.Game.Rulesets.Mania.Tests.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Mania\osu.Game.Rulesets.Mania.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Osu.Tests\osu.Game.Rulesets.Osu.Tests.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Osu\osu.Game.Rulesets.Osu.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Taiko.Tests\osu.Game.Rulesets.Taiko.Tests.csproj" />
-    <ProjectReference Include="..\osu.Game.Rulesets.Taiko\osu.Game.Rulesets.Taiko.csproj" />
-    <ProjectReference Include="..\osu.Game.Tests\osu.Game.Tests.csproj" />
-    <ProjectReference Include="..\osu.Game.Tournament.Tests\osu.Game.Tournament.Tests.csproj" />
-    <ProjectReference Include="..\osu.Game.Tournament\osu.Game.Tournament.csproj" />
-    <ProjectReference Include="..\osu.Game\osu.Game.csproj" />
-  </ItemGroup>
-</Project>
--- a/build/InspectCode.cake
+++ b/build/InspectCode.cake
@ -1,41 +0,0 @@
-#addin "nuget:?package=CodeFileSanity&version=0.0.36"
-
-///////////////////////////////////////////////////////////////////////////////
-// ARGUMENTS
-///////////////////////////////////////////////////////////////////////////////
-
-var target = Argument("target", "CodeAnalysis");
-var configuration = Argument("configuration", "Release");
-
-var rootDirectory = new DirectoryPath("..");
-var sln = rootDirectory.CombineWithFilePath("osu.sln");
-var desktopSlnf = rootDirectory.CombineWithFilePath("osu.Desktop.slnf");
-
-///////////////////////////////////////////////////////////////////////////////
-// TASKS
-///////////////////////////////////////////////////////////////////////////////
-
-Task("InspectCode")
-    .Does(() => {
-        var inspectcodereport = "inspectcodereport.xml";
-        var cacheDir = "inspectcode";
-        var verbosity = AppVeyor.IsRunningOnAppVeyor ? "WARN" : "INFO"; // Don't flood CI output
-
-        DotNetCoreTool(rootDirectory.FullPath,
-            "jb", $@"inspectcode ""{desktopSlnf}"" --output=""{inspectcodereport}"" --caches-home=""{cacheDir}"" --verbosity={verbosity}");
-        DotNetCoreTool(rootDirectory.FullPath, "nvika", $@"parsereport ""{inspectcodereport}"" --treatwarningsaserrors");
-    });
-
-Task("CodeFileSanity")
-    .Does(() => {
-        ValidateCodeSanity(new ValidateCodeSanitySettings {
-            RootDirectory = rootDirectory.FullPath,
-            IsAppveyorBuild = AppVeyor.IsRunningOnAppVeyor
-        });
-    });
-
-Task("CodeAnalysis")
-    .IsDependentOn("CodeFileSanity")
-    .IsDependentOn("InspectCode");
-
-RunTarget(target);
--- a/cake.config
+++ b/cake.config
@ -1,5 +0,0 @@
-
-[Nuget]
-Source=https://api.nuget.org/v3/index.json
-UseInProcessClient=true
-LoadDependencies=true
--- a/osu.Android.props
+++ b/osu.Android.props
@ -51,7 +51,11 @@
    <Reference Include="Java.Interop" />
  </ItemGroup>
  <ItemGroup>
-    <PackageReference Include="ppy.osu.Game.Resources" Version="2021.525.0" />
-    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.608.0" />
+    <PackageReference Include="ppy.osu.Game.Resources" Version="2021.810.0" />
+    <PackageReference Include="ppy.osu.Framework.Android" Version="2021.811.0" />
+  </ItemGroup>
+  <ItemGroup Label="Transitive Dependencies">
+    <!-- Realm needs to be directly referenced in all Xamarin projects, as it will not pull in its transitive dependencies otherwise. -->
+    <PackageReference Include="Realm" Version="10.3.0" />
  </ItemGroup>
 </Project>
--- a/osu.Android/osu.Android.csproj
+++ b/osu.Android/osu.Android.csproj
@ -64,7 +64,7 @@
    </PackageReference>
  </ItemGroup>
  <ItemGroup>
-    <PackageReference Include="Xamarin.Essentials" Version="1.6.1" />
+    <PackageReference Include="Xamarin.Essentials" Version="1.7.0" />
  </ItemGroup>
  <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
 </Project>
--- a/osu.Desktop/Program.cs
+++ b/osu.Desktop/Program.cs
@ -3,7 +3,6 @@

 using System;
 using System.IO;
-using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using osu.Framework;
@ -17,13 +16,43 @@ namespace osu.Desktop
 {
    public static class Program
    {
+        private const string base_game_name = @"osu";
+
        [STAThread]
        public static int Main(string[] args)
        {
            // Back up the cwd before DesktopGameHost changes it
            var cwd = Environment.CurrentDirectory;

-            using (DesktopGameHost host = Host.GetSuitableHost(@"osu", true))
+            string gameName = base_game_name;
+            bool tournamentClient = false;
+
+            foreach (var arg in args)
+            {
+                var split = arg.Split('=');
+
+                var key = split[0];
+                var val = split.Length > 1 ? split[1] : string.Empty;
+
+                switch (key)
+                {
+                    case "--tournament":
+                        tournamentClient = true;
+                        break;
+
+                    case "--debug-client-id":
+                        if (!DebugUtils.IsDebugBuild)
+                            throw new InvalidOperationException("Cannot use this argument in a non-debug build.");
+
+                        if (!int.TryParse(val, out int clientID))
+                            throw new ArgumentException("Provided client ID must be an integer.");
+
+                        gameName = $"{base_game_name}-{clientID}";
+                        break;
+                }
+            }
+
+            using (DesktopGameHost host = Host.GetSuitableHost(gameName, true))
            {
                host.ExceptionThrown += handleException;

@ -48,16 +77,10 @@ namespace osu.Desktop
                        return 0;
                }

-                switch (args.FirstOrDefault() ?? string.Empty)
-                {
-                    default:
-                        host.Run(new OsuGameDesktop(args));
-                        break;
-
-                    case "--tournament":
-                        host.Run(new TournamentGame());
-                        break;
-                }
+                if (tournamentClient)
+                    host.Run(new TournamentGame());
+                else
+                    host.Run(new OsuGameDesktop(args));

                return 0;
            }
--- a/osu.Desktop/Updater/SquirrelUpdateManager.cs
+++ b/osu.Desktop/Updater/SquirrelUpdateManager.cs
@ -68,6 +68,8 @@ namespace osu.Desktop.Updater
                    return false;
                }

+                scheduleRecheck = false;
+
                if (notification == null)
                {
                    notification = new UpdateProgressNotification(this) { State = ProgressNotificationState.Active };
@ -98,7 +100,6 @@ namespace osu.Desktop.Updater
                        // could fail if deltas are unavailable for full update path (https://github.com/Squirrel/Squirrel.Windows/issues/959)
                        // try again without deltas.
                        await checkForUpdateAsync(false, notification).ConfigureAwait(false);
-                        scheduleRecheck = false;
                    }
                    else
                    {
@ -110,13 +111,14 @@ namespace osu.Desktop.Updater
            catch (Exception)
            {
                // we'll ignore this and retry later. can be triggered by no internet connection or thread abortion.
+                scheduleRecheck = true;
            }
            finally
            {
                if (scheduleRecheck)
                {
                    // check again in 30 minutes.
-                    Scheduler.AddDelayed(async () => await checkForUpdateAsync().ConfigureAwait(false), 60000 * 30);
+                    Scheduler.AddDelayed(() => Task.Run(async () => await checkForUpdateAsync().ConfigureAwait(false)), 60000 * 30);
                }
            }

@ -141,7 +143,7 @@ namespace osu.Desktop.Updater
                Activated = () =>
                {
                    updateManager.PrepareUpdateAsync()
-                                 .ContinueWith(_ => updateManager.Schedule(() => game.GracefullyExit()));
+                                 .ContinueWith(_ => updateManager.Schedule(() => game?.GracefullyExit()));
                    return true;
                };
            }
--- a/osu.Desktop/osu.Desktop.csproj
+++ b/osu.Desktop/osu.Desktop.csproj
@ -5,8 +5,8 @@
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
    <Description>A free-to-win rhythm game. Rhythm is just a *click* away!</Description>
    <AssemblyName>osu!</AssemblyName>
-    <Title>osu!lazer</Title>
-    <Product>osu!lazer</Product>
+    <Title>osu!</Title>
+    <Product>osu!(lazer)</Product>
    <ApplicationIcon>lazer.ico</ApplicationIcon>
    <ApplicationManifest>app.manifest</ApplicationManifest>
    <Version>0.0.0</Version>
--- a/osu.Desktop/osu.nuspec
+++ b/osu.Desktop/osu.nuspec
@ -3,7 +3,7 @@
    <metadata>
        <id>osulazer</id>
        <version>0.0.0</version>
-        <title>osu!lazer</title>
+        <title>osu!</title>
        <authors>ppy Pty Ltd</authors>
        <owners>Dean Herbert</owners>
        <projectUrl>https://osu.ppy.sh/</projectUrl>
@ -20,4 +20,3 @@
      <file src="**.config" target="lib\net45\"/>
    </files>
 </package>
-
--- a/osu.Game.Benchmarks/osu.Game.Benchmarks.csproj
+++ b/osu.Game.Benchmarks/osu.Game.Benchmarks.csproj
@ -9,7 +9,7 @@
  <ItemGroup>
    <PackageReference Include="BenchmarkDotNet" Version="0.13.0" />
    <PackageReference Include="nunit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
  </ItemGroup>

  <ItemGroup>
--- a/osu.Game.Rulesets.Catch.Tests/Editor/CatchEditorTestSceneContainer.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/CatchEditorTestSceneContainer.cs
@ -0,0 +1,66 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Timing;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Edit;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public class CatchEditorTestSceneContainer : Container
+    {
+        [Cached(typeof(Playfield))]
+        public readonly ScrollingPlayfield Playfield;
+
+        protected override Container<Drawable> Content { get; }
+
+        public CatchEditorTestSceneContainer()
+        {
+            Anchor = Anchor.Centre;
+            Origin = Anchor.Centre;
+            Width = CatchPlayfield.WIDTH;
+            Height = 1000;
+            Padding = new MarginPadding
+            {
+                Bottom = 100
+            };
+
+            InternalChildren = new Drawable[]
+            {
+                new ScrollingTestContainer(ScrollingDirection.Down)
+                {
+                    TimeRange = 1000,
+                    RelativeSizeAxes = Axes.Both,
+                    Child = Playfield = new TestCatchPlayfield
+                    {
+                        RelativeSizeAxes = Axes.Both
+                    }
+                },
+                new PlayfieldBorder
+                {
+                    PlayfieldBorderStyle = { Value = PlayfieldBorderStyle.Full },
+                    Clock = new FramedClock(new StopwatchClock(true))
+                },
+                Content = new Container
+                {
+                    RelativeSizeAxes = Axes.Both
+                }
+            };
+        }
+
+        private class TestCatchPlayfield : CatchEditorPlayfield
+        {
+            public TestCatchPlayfield()
+                : base(new BeatmapDifficulty { CircleSize = 0 })
+            {
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/CatchPlacementBlueprintTestScene.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/CatchPlacementBlueprintTestScene.cs
@ -0,0 +1,79 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
+using osu.Framework.Timing;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects.Drawables;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Tests.Visual;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public abstract class CatchPlacementBlueprintTestScene : PlacementBlueprintTestScene
+    {
+        protected const double TIME_SNAP = 100;
+
+        protected DrawableCatchHitObject LastObject;
+
+        protected new ScrollingHitObjectContainer HitObjectContainer => contentContainer.Playfield.HitObjectContainer;
+
+        protected override Container<Drawable> Content => contentContainer;
+
+        private readonly CatchEditorTestSceneContainer contentContainer;
+
+        protected CatchPlacementBlueprintTestScene()
+        {
+            base.Content.Add(contentContainer = new CatchEditorTestSceneContainer());
+
+            contentContainer.Playfield.Clock = new FramedClock(new ManualClock());
+        }
+
+        [SetUp]
+        public void Setup() => Schedule(() =>
+        {
+            HitObjectContainer.Clear();
+            ResetPlacement();
+            LastObject = null;
+        });
+
+        protected void AddMoveStep(double time, float x) => AddStep($"move to time={time}, x={x}", () =>
+        {
+            float y = HitObjectContainer.PositionAtTime(time);
+            Vector2 pos = HitObjectContainer.ToScreenSpace(new Vector2(x, y + HitObjectContainer.DrawHeight));
+            InputManager.MoveMouseTo(pos);
+        });
+
+        protected void AddClickStep(MouseButton button) => AddStep($"click {button}", () =>
+        {
+            InputManager.Click(button);
+        });
+
+        protected IEnumerable<FruitOutline> FruitOutlines => Content.ChildrenOfType<FruitOutline>();
+
+        // Unused because AddHitObject is overriden
+        protected override Container CreateHitObjectContainer() => new Container();
+
+        protected override void AddHitObject(DrawableHitObject hitObject)
+        {
+            LastObject = (DrawableCatchHitObject)hitObject;
+            contentContainer.Playfield.HitObjectContainer.Add(hitObject);
+        }
+
+        protected override SnapResult SnapForBlueprint(PlacementBlueprint blueprint)
+        {
+            var result = base.SnapForBlueprint(blueprint);
+            result.Time = Math.Round(HitObjectContainer.TimeAtScreenSpacePosition(result.ScreenSpacePosition) / TIME_SNAP) * TIME_SNAP;
+            return result;
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/CatchSelectionBlueprintTestScene.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/CatchSelectionBlueprintTestScene.cs
@ -0,0 +1,72 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Catch.Beatmaps;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Screens.Edit;
+using osu.Game.Tests.Visual;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public abstract class CatchSelectionBlueprintTestScene : SelectionBlueprintTestScene
+    {
+        protected ScrollingHitObjectContainer HitObjectContainer => contentContainer.Playfield.HitObjectContainer;
+
+        protected override Container<Drawable> Content => contentContainer;
+
+        [Cached(typeof(EditorBeatmap))]
+        [Cached(typeof(IBeatSnapProvider))]
+        protected readonly EditorBeatmap EditorBeatmap;
+
+        private readonly CatchEditorTestSceneContainer contentContainer;
+
+        protected CatchSelectionBlueprintTestScene()
+        {
+            EditorBeatmap = new EditorBeatmap(new CatchBeatmap());
+            EditorBeatmap.BeatmapInfo.BaseDifficulty.CircleSize = 0;
+            EditorBeatmap.ControlPointInfo.Add(0, new TimingControlPoint
+            {
+                BeatLength = 100
+            });
+
+            base.Content.Add(new EditorBeatmapDependencyContainer(EditorBeatmap, new BindableBeatDivisor())
+            {
+                RelativeSizeAxes = Axes.Both,
+                Children = new Drawable[]
+                {
+                    EditorBeatmap,
+                    contentContainer = new CatchEditorTestSceneContainer()
+                },
+            });
+        }
+
+        protected void AddMouseMoveStep(double time, float x) => AddStep($"move to time={time}, x={x}", () =>
+        {
+            float y = HitObjectContainer.PositionAtTime(time);
+            Vector2 pos = HitObjectContainer.ToScreenSpace(new Vector2(x, y + HitObjectContainer.DrawHeight));
+            InputManager.MoveMouseTo(pos);
+        });
+
+        private class EditorBeatmapDependencyContainer : Container
+        {
+            [Cached]
+            private readonly EditorClock editorClock;
+
+            [Cached]
+            private readonly BindableBeatDivisor beatDivisor;
+
+            public EditorBeatmapDependencyContainer(IBeatmap beatmap, BindableBeatDivisor beatDivisor)
+            {
+                editorClock = new EditorClock(beatmap, beatDivisor);
+                this.beatDivisor = beatDivisor;
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneBananaShowerPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneBananaShowerPlacementBlueprint.cs
@ -0,0 +1,87 @@
+// 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.ControlPoints;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public class TestSceneBananaShowerPlacementBlueprint : CatchPlacementBlueprintTestScene
+    {
+        protected override DrawableHitObject CreateHitObject(HitObject hitObject) => new DrawableBananaShower((BananaShower)hitObject);
+
+        protected override PlacementBlueprint CreateBlueprint() => new BananaShowerPlacementBlueprint();
+
+        protected override void AddHitObject(DrawableHitObject hitObject)
+        {
+            // Create nested bananas (but positions are not randomized because beatmap processing is not done).
+            hitObject.HitObject.ApplyDefaults(new ControlPointInfo(), Beatmap.Value.BeatmapInfo.BaseDifficulty);
+
+            base.AddHitObject(hitObject);
+        }
+
+        [Test]
+        public void TestBasicPlacement()
+        {
+            const double start_time = 100;
+            const double end_time = 500;
+
+            AddMoveStep(start_time, 0);
+            AddClickStep(MouseButton.Left);
+            AddMoveStep(end_time, 0);
+            AddClickStep(MouseButton.Right);
+            AddAssert("banana shower is placed", () => LastObject is DrawableBananaShower);
+            AddAssert("start time is correct", () => Precision.AlmostEquals(LastObject.HitObject.StartTime, start_time));
+            AddAssert("end time is correct", () => Precision.AlmostEquals(LastObject.HitObject.GetEndTime(), end_time));
+        }
+
+        [Test]
+        public void TestReversePlacement()
+        {
+            const double start_time = 100;
+            const double end_time = 500;
+
+            AddMoveStep(end_time, 0);
+            AddClickStep(MouseButton.Left);
+            AddMoveStep(start_time, 0);
+            AddClickStep(MouseButton.Right);
+            AddAssert("start time is correct", () => Precision.AlmostEquals(LastObject.HitObject.StartTime, start_time));
+            AddAssert("end time is correct", () => Precision.AlmostEquals(LastObject.HitObject.GetEndTime(), end_time));
+        }
+
+        [Test]
+        public void TestFinishWithZeroDuration()
+        {
+            AddMoveStep(100, 0);
+            AddClickStep(MouseButton.Left);
+            AddClickStep(MouseButton.Right);
+            AddAssert("banana shower is not placed", () => LastObject == null);
+            AddAssert("state is waiting", () => CurrentBlueprint?.PlacementActive == PlacementBlueprint.PlacementState.Waiting);
+        }
+
+        [Test]
+        public void TestOpacity()
+        {
+            AddMoveStep(100, 0);
+            AddClickStep(MouseButton.Left);
+            AddUntilStep("outline is semitransparent", () => Precision.DefinitelyBigger(1, timeSpanOutline.Alpha));
+            AddMoveStep(200, 0);
+            AddUntilStep("outline is opaque", () => Precision.AlmostEquals(timeSpanOutline.Alpha, 1));
+            AddMoveStep(100, 0);
+            AddUntilStep("outline is semitransparent", () => Precision.DefinitelyBigger(1, timeSpanOutline.Alpha));
+        }
+
+        private TimeSpanOutline timeSpanOutline => Content.ChildrenOfType<TimeSpanOutline>().Single();
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneEditor.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneEditor.cs
@ -0,0 +1,14 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Game.Tests.Visual;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    [TestFixture]
+    public class TestSceneEditor : EditorTestScene
+    {
+        protected override Ruleset CreateEditorRuleset() => new CatchRuleset();
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneFruitPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneFruitPlacementBlueprint.cs
@ -0,0 +1,44 @@
+// 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.Utils;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public class TestSceneFruitPlacementBlueprint : CatchPlacementBlueprintTestScene
+    {
+        protected override DrawableHitObject CreateHitObject(HitObject hitObject) => new DrawableFruit((Fruit)hitObject);
+
+        protected override PlacementBlueprint CreateBlueprint() => new FruitPlacementBlueprint();
+
+        [Test]
+        public void TestFruitPlacementPosition()
+        {
+            const double time = 300;
+            const float x = CatchPlayfield.CENTER_X;
+
+            AddMoveStep(time, x);
+            AddClickStep(MouseButton.Left);
+
+            AddAssert("outline position is correct", () =>
+            {
+                var outline = FruitOutlines.Single();
+                return Precision.AlmostEquals(outline.X, x) &&
+                       Precision.AlmostEquals(outline.Y, HitObjectContainer.PositionAtTime(time));
+            });
+
+            AddAssert("fruit time is correct", () => Precision.AlmostEquals(LastObject.StartTimeBindable.Value, time));
+            AddAssert("fruit position is correct", () => Precision.AlmostEquals(LastObject.X, x));
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamPlacementBlueprint.cs
@ -0,0 +1,155 @@
+// 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.Extensions.ObjectExtensions;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Drawables;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public class TestSceneJuiceStreamPlacementBlueprint : CatchPlacementBlueprintTestScene
+    {
+        private const double velocity = 0.5;
+
+        private JuiceStream lastObject => LastObject?.HitObject as JuiceStream;
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            Beatmap.Value.BeatmapInfo.BaseDifficulty.SliderTickRate = 5;
+            Beatmap.Value.BeatmapInfo.BaseDifficulty.SliderMultiplier = velocity * 10;
+        }
+
+        [Test]
+        public void TestBasicPlacement()
+        {
+            double[] times = { 300, 800 };
+            float[] positions = { 100, 200 };
+            addPlacementSteps(times, positions);
+
+            AddAssert("juice stream is placed", () => lastObject != null);
+            AddAssert("start time is correct", () => Precision.AlmostEquals(lastObject.StartTime, times[0]));
+            AddAssert("end time is correct", () => Precision.AlmostEquals(lastObject.EndTime, times[1]));
+            AddAssert("start position is correct", () => Precision.AlmostEquals(lastObject.OriginalX, positions[0]));
+            AddAssert("end position is correct", () => Precision.AlmostEquals(lastObject.EndX, positions[1]));
+        }
+
+        [Test]
+        public void TestEmptyNotCommitted()
+        {
+            addMoveAndClickSteps(100, 100);
+            addMoveAndClickSteps(100, 100);
+            addMoveAndClickSteps(100, 100, true);
+            AddAssert("juice stream not placed", () => lastObject == null);
+        }
+
+        [Test]
+        public void TestMultipleSegments()
+        {
+            double[] times = { 100, 300, 500, 700 };
+            float[] positions = { 100, 150, 100, 100 };
+            addPlacementSteps(times, positions);
+
+            AddAssert("has 4 vertices", () => lastObject.Path.ControlPoints.Count == 4);
+            addPathCheckStep(times, positions);
+        }
+
+        [Test]
+        public void TestVelocityLimit()
+        {
+            double[] times = { 100, 300 };
+            float[] positions = { 200, 500 };
+            addPlacementSteps(times, positions);
+            addPathCheckStep(times, new float[] { 200, 300 });
+        }
+
+        [Test]
+        public void TestPreviousVerticesAreFixed()
+        {
+            double[] times = { 100, 300, 500, 700 };
+            float[] positions = { 200, 400, 100, 500 };
+            addPlacementSteps(times, positions);
+            addPathCheckStep(times, new float[] { 200, 300, 200, 300 });
+        }
+
+        [Test]
+        public void TestClampedPositionIsRestored()
+        {
+            double[] times = { 100, 300, 500 };
+            float[] positions = { 200, 200, 0, 250 };
+
+            addMoveAndClickSteps(times[0], positions[0]);
+            addMoveAndClickSteps(times[1], positions[1]);
+            AddMoveStep(times[2], positions[2]);
+            addMoveAndClickSteps(times[2], positions[3], true);
+
+            addPathCheckStep(times, new float[] { 200, 200, 250 });
+        }
+
+        [Test]
+        public void TestFirstVertexIsFixed()
+        {
+            double[] times = { 100, 200 };
+            float[] positions = { 100, 300 };
+            addPlacementSteps(times, positions);
+            addPathCheckStep(times, new float[] { 100, 150 });
+        }
+
+        [Test]
+        public void TestOutOfOrder()
+        {
+            double[] times = { 100, 700, 500, 300 };
+            float[] positions = { 100, 200, 150, 50 };
+            addPlacementSteps(times, positions);
+            addPathCheckStep(times, positions);
+        }
+
+        [Test]
+        public void TestMoveBeforeFirstVertex()
+        {
+            double[] times = { 300, 500, 100 };
+            float[] positions = { 100, 100, 100 };
+            addPlacementSteps(times, positions);
+            AddAssert("start time is correct", () => Precision.AlmostEquals(lastObject.StartTime, times[0]));
+            AddAssert("end time is correct", () => Precision.AlmostEquals(lastObject.EndTime, times[1], 1e-3));
+        }
+
+        protected override DrawableHitObject CreateHitObject(HitObject hitObject) => new DrawableJuiceStream((JuiceStream)hitObject);
+
+        protected override PlacementBlueprint CreateBlueprint() => new JuiceStreamPlacementBlueprint();
+
+        private void addMoveAndClickSteps(double time, float position, bool end = false)
+        {
+            AddMoveStep(time, position);
+            AddClickStep(end ? MouseButton.Right : MouseButton.Left);
+        }
+
+        private void addPlacementSteps(double[] times, float[] positions)
+        {
+            for (int i = 0; i < times.Length; i++)
+                addMoveAndClickSteps(times[i], positions[i], i == times.Length - 1);
+        }
+
+        private void addPathCheckStep(double[] times, float[] positions) => AddStep("assert path is correct", () =>
+            Assert.That(getPositions(times), Is.EqualTo(positions).Within(Precision.FLOAT_EPSILON)));
+
+        private float[] getPositions(IEnumerable<double> times)
+        {
+            JuiceStream hitObject = lastObject.AsNonNull();
+            return times
+                   .Select(time => (time - hitObject.StartTime) * hitObject.Velocity)
+                   .Select(distance => hitObject.EffectiveX + hitObject.Path.PositionAt(distance / hitObject.Distance).X)
+                   .ToArray();
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Editor/TestSceneJuiceStreamSelectionBlueprint.cs
@ -0,0 +1,286 @@
+// 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.Testing;
+using osu.Framework.Timing;
+using osu.Framework.Utils;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Tests.Editor
+{
+    public class TestSceneJuiceStreamSelectionBlueprint : CatchSelectionBlueprintTestScene
+    {
+        private JuiceStream hitObject;
+
+        private readonly ManualClock manualClock = new ManualClock();
+
+        [SetUp]
+        public void SetUp() => Schedule(() =>
+        {
+            EditorBeatmap.Clear();
+            Content.Clear();
+
+            manualClock.CurrentTime = 0;
+            Content.Clock = new FramedClock(manualClock);
+
+            InputManager.ReleaseButton(MouseButton.Left);
+            InputManager.ReleaseKey(Key.ShiftLeft);
+            InputManager.ReleaseKey(Key.ControlLeft);
+        });
+
+        [Test]
+        public void TestBasicComponentLayout()
+        {
+            double[] times = { 100, 300, 500 };
+            float[] positions = { 100, 200, 100 };
+            addBlueprintStep(times, positions);
+
+            for (int i = 0; i < times.Length; i++)
+                addVertexCheckStep(times.Length, i, times[i], positions[i]);
+
+            AddAssert("correct outline count", () =>
+            {
+                var expected = hitObject.NestedHitObjects.Count(h => !(h is TinyDroplet));
+                return this.ChildrenOfType<FruitOutline>().Count() == expected;
+            });
+            AddAssert("correct vertex piece count", () =>
+                this.ChildrenOfType<VertexPiece>().Count() == times.Length);
+
+            AddAssert("first vertex is semitransparent", () =>
+                Precision.DefinitelyBigger(1, this.ChildrenOfType<VertexPiece>().First().Alpha));
+        }
+
+        [Test]
+        public void TestVertexDrag()
+        {
+            double[] times = { 100, 400, 700 };
+            float[] positions = { 100, 100, 100 };
+            addBlueprintStep(times, positions);
+
+            addDragStartStep(times[1], positions[1]);
+
+            AddMouseMoveStep(500, 150);
+            addVertexCheckStep(3, 1, 500, 150);
+
+            addDragEndStep();
+            addDragStartStep(times[2], positions[2]);
+
+            AddMouseMoveStep(300, 50);
+            addVertexCheckStep(3, 1, 300, 50);
+            addVertexCheckStep(3, 2, 500, 150);
+
+            AddMouseMoveStep(-100, 100);
+            addVertexCheckStep(3, 1, times[0], positions[0]);
+        }
+
+        [Test]
+        public void TestMultipleDrag()
+        {
+            double[] times = { 100, 300, 500, 700 };
+            float[] positions = { 100, 100, 100, 100 };
+            addBlueprintStep(times, positions);
+
+            AddMouseMoveStep(times[1], positions[1]);
+            AddStep("press left", () => InputManager.PressButton(MouseButton.Left));
+            AddStep("release left", () => InputManager.ReleaseButton(MouseButton.Left));
+            AddStep("hold control", () => InputManager.PressKey(Key.ControlLeft));
+            addDragStartStep(times[2], positions[2]);
+
+            AddMouseMoveStep(times[2] - 50, positions[2] - 50);
+            addVertexCheckStep(4, 1, times[1] - 50, positions[1] - 50);
+            addVertexCheckStep(4, 2, times[2] - 50, positions[2] - 50);
+        }
+
+        [Test]
+        public void TestClampedPositionIsRestored()
+        {
+            const double velocity = 0.25;
+            double[] times = { 100, 500, 700 };
+            float[] positions = { 100, 100, 100 };
+            addBlueprintStep(times, positions, velocity);
+
+            addDragStartStep(times[1], positions[1]);
+
+            AddMouseMoveStep(times[1], 200);
+            addVertexCheckStep(3, 1, times[1], 200);
+            addVertexCheckStep(3, 2, times[2], 150);
+
+            AddMouseMoveStep(times[1], 100);
+            addVertexCheckStep(3, 1, times[1], 100);
+            // Stored position is restored.
+            addVertexCheckStep(3, 2, times[2], positions[2]);
+
+            AddMouseMoveStep(times[1], 300);
+            addDragEndStep();
+            addDragStartStep(times[1], 300);
+
+            AddMouseMoveStep(times[1], 100);
+            // Position is different because a changed position is committed when the previous drag is ended.
+            addVertexCheckStep(3, 2, times[2], 250);
+        }
+
+        [Test]
+        public void TestScrollWhileDrag()
+        {
+            double[] times = { 300, 500 };
+            float[] positions = { 100, 100 };
+            addBlueprintStep(times, positions);
+
+            addDragStartStep(times[1], positions[1]);
+            // This mouse move is necessary to start drag and capture the input.
+            AddMouseMoveStep(times[1], positions[1] + 50);
+
+            AddStep("scroll playfield", () => manualClock.CurrentTime += 200);
+            AddMouseMoveStep(times[1] + 200, positions[1] + 100);
+            addVertexCheckStep(2, 1, times[1] + 200, positions[1] + 100);
+        }
+
+        [Test]
+        public void TestUpdateFromHitObject()
+        {
+            double[] times = { 100, 300 };
+            float[] positions = { 200, 200 };
+            addBlueprintStep(times, positions);
+
+            AddStep("update hit object path", () =>
+            {
+                hitObject.Path = new SliderPath(PathType.PerfectCurve, new[]
+                {
+                    Vector2.Zero,
+                    new Vector2(100, 100),
+                    new Vector2(0, 200),
+                });
+                EditorBeatmap.Update(hitObject);
+            });
+            AddAssert("path is updated", () => getVertices().Count > 2);
+        }
+
+        [Test]
+        public void TestAddVertex()
+        {
+            double[] times = { 100, 700 };
+            float[] positions = { 200, 200 };
+            addBlueprintStep(times, positions, 0.2);
+
+            addAddVertexSteps(500, 150);
+            addVertexCheckStep(3, 1, 500, 150);
+
+            addAddVertexSteps(90, 220);
+            addVertexCheckStep(4, 1, times[0], positions[0]);
+
+            addAddVertexSteps(750, 180);
+            addVertexCheckStep(5, 4, 750, 180);
+            AddAssert("duration is changed", () => Precision.AlmostEquals(hitObject.Duration, 800 - times[0], 1e-3));
+        }
+
+        [Test]
+        public void TestDeleteVertex()
+        {
+            double[] times = { 100, 300, 500 };
+            float[] positions = { 100, 200, 150 };
+            addBlueprintStep(times, positions);
+
+            addDeleteVertexSteps(times[1], positions[1]);
+            addVertexCheckStep(2, 1, times[2], positions[2]);
+
+            // The first vertex cannot be deleted.
+            addDeleteVertexSteps(times[0], positions[0]);
+            addVertexCheckStep(2, 0, times[0], positions[0]);
+
+            addDeleteVertexSteps(times[2], positions[2]);
+            addVertexCheckStep(1, 0, times[0], positions[0]);
+        }
+
+        [Test]
+        public void TestVertexResampling()
+        {
+            addBlueprintStep(100, 100, new SliderPath(PathType.PerfectCurve, new[]
+            {
+                Vector2.Zero,
+                new Vector2(100, 100),
+                new Vector2(50, 200),
+            }), 0.5);
+            AddAssert("1 vertex per 1 nested HO", () => getVertices().Count == hitObject.NestedHitObjects.Count);
+            AddAssert("slider path not yet changed", () => hitObject.Path.ControlPoints[0].Type.Value == PathType.PerfectCurve);
+            addAddVertexSteps(150, 150);
+            AddAssert("slider path change to linear", () => hitObject.Path.ControlPoints[0].Type.Value == PathType.Linear);
+        }
+
+        private void addBlueprintStep(double time, float x, SliderPath sliderPath, double velocity) => AddStep("add selection blueprint", () =>
+        {
+            hitObject = new JuiceStream
+            {
+                StartTime = time,
+                X = x,
+                Path = sliderPath,
+            };
+            EditorBeatmap.BeatmapInfo.BaseDifficulty.SliderMultiplier = velocity;
+            EditorBeatmap.Add(hitObject);
+            EditorBeatmap.Update(hitObject);
+            Assert.That(hitObject.Velocity, Is.EqualTo(velocity));
+            AddBlueprint(new JuiceStreamSelectionBlueprint(hitObject));
+        });
+
+        private void addBlueprintStep(double[] times, float[] positions, double velocity = 0.5)
+        {
+            var path = new JuiceStreamPath();
+            for (int i = 1; i < times.Length; i++)
+                path.Add((times[i] - times[0]) * velocity, positions[i] - positions[0]);
+
+            var sliderPath = new SliderPath();
+            path.ConvertToSliderPath(sliderPath, 0);
+            addBlueprintStep(times[0], positions[0], sliderPath, velocity);
+        }
+
+        private IReadOnlyList<JuiceStreamPathVertex> getVertices() => this.ChildrenOfType<EditablePath>().Single().Vertices;
+
+        private void addVertexCheckStep(int count, int index, double time, float x) => AddAssert($"vertex {index} of {count} at {time}, {x}", () =>
+        {
+            double expectedDistance = (time - hitObject.StartTime) * hitObject.Velocity;
+            float expectedX = x - hitObject.OriginalX;
+            var vertices = getVertices();
+            return vertices.Count == count &&
+                   Precision.AlmostEquals(vertices[index].Distance, expectedDistance, 1e-3) &&
+                   Precision.AlmostEquals(vertices[index].X, expectedX);
+        });
+
+        private void addDragStartStep(double time, float x)
+        {
+            AddMouseMoveStep(time, x);
+            AddStep("start dragging", () => InputManager.PressButton(MouseButton.Left));
+        }
+
+        private void addDragEndStep() => AddStep("end dragging", () => InputManager.ReleaseButton(MouseButton.Left));
+
+        private void addAddVertexSteps(double time, float x)
+        {
+            AddMouseMoveStep(time, x);
+            AddStep("add vertex", () =>
+            {
+                InputManager.PressKey(Key.ControlLeft);
+                InputManager.Click(MouseButton.Left);
+                InputManager.ReleaseKey(Key.ControlLeft);
+            });
+        }
+
+        private void addDeleteVertexSteps(double time, float x)
+        {
+            AddMouseMoveStep(time, x);
+            AddStep("delete vertex", () =>
+            {
+                InputManager.PressKey(Key.ShiftLeft);
+                InputManager.Click(MouseButton.Left);
+                InputManager.ReleaseKey(Key.ShiftLeft);
+            });
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/JuiceStreamPathTest.cs
+++ b/osu.Game.Rulesets.Catch.Tests/JuiceStreamPathTest.cs
@ -0,0 +1,288 @@
+// 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.Utils;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    [TestFixture]
+    public class JuiceStreamPathTest
+    {
+        [TestCase(1e3, true, false)]
+        // When the coordinates are large, the slope invariant fails within the specified absolute allowance due to the floating-number precision.
+        [TestCase(1e9, false, false)]
+        // Using discrete values sometimes discover more edge cases.
+        [TestCase(10, true, true)]
+        public void TestRandomInsertSetPosition(double scale, bool checkSlope, bool integralValues)
+        {
+            var rng = new Random(1);
+            var path = new JuiceStreamPath();
+
+            for (int iteration = 0; iteration < 100000; iteration++)
+            {
+                if (rng.Next(10) == 0)
+                    path.Clear();
+
+                int vertexCount = path.Vertices.Count;
+
+                switch (rng.Next(2))
+                {
+                    case 0:
+                    {
+                        double distance = rng.NextDouble() * scale * 2 - scale;
+                        if (integralValues)
+                            distance = Math.Round(distance);
+
+                        float oldX = path.PositionAtDistance(distance);
+                        int index = path.InsertVertex(distance);
+                        Assert.That(path.Vertices.Count, Is.EqualTo(vertexCount + 1));
+                        Assert.That(path.Vertices[index].Distance, Is.EqualTo(distance));
+                        Assert.That(path.Vertices[index].X, Is.EqualTo(oldX));
+                        break;
+                    }
+
+                    case 1:
+                    {
+                        int index = rng.Next(path.Vertices.Count);
+                        double distance = path.Vertices[index].Distance;
+                        float newX = (float)(rng.NextDouble() * scale * 2 - scale);
+                        if (integralValues)
+                            newX = MathF.Round(newX);
+
+                        path.SetVertexPosition(index, newX);
+                        Assert.That(path.Vertices.Count, Is.EqualTo(vertexCount));
+                        Assert.That(path.Vertices[index].Distance, Is.EqualTo(distance));
+                        Assert.That(path.Vertices[index].X, Is.EqualTo(newX));
+                        break;
+                    }
+                }
+
+                assertInvariants(path.Vertices, checkSlope);
+            }
+        }
+
+        [Test]
+        public void TestRemoveVertices()
+        {
+            var path = new JuiceStreamPath();
+            path.Add(10, 5);
+            path.Add(20, -5);
+
+            int removeCount = path.RemoveVertices((v, i) => v.Distance == 10 && i == 1);
+            Assert.That(removeCount, Is.EqualTo(1));
+            Assert.That(path.Vertices, Is.EqualTo(new[]
+            {
+                new JuiceStreamPathVertex(0, 0),
+                new JuiceStreamPathVertex(20, -5)
+            }));
+
+            removeCount = path.RemoveVertices((_, i) => i == 0);
+            Assert.That(removeCount, Is.EqualTo(1));
+            Assert.That(path.Vertices, Is.EqualTo(new[]
+            {
+                new JuiceStreamPathVertex(20, -5)
+            }));
+
+            removeCount = path.RemoveVertices((_, i) => true);
+            Assert.That(removeCount, Is.EqualTo(1));
+            Assert.That(path.Vertices, Is.EqualTo(new[]
+            {
+                new JuiceStreamPathVertex()
+            }));
+        }
+
+        [Test]
+        public void TestResampleVertices()
+        {
+            var path = new JuiceStreamPath();
+            path.Add(-100, -10);
+            path.Add(100, 50);
+            path.ResampleVertices(new double[]
+            {
+                -50,
+                0,
+                70,
+                120
+            });
+            Assert.That(path.Vertices, Is.EqualTo(new[]
+            {
+                new JuiceStreamPathVertex(-100, -10),
+                new JuiceStreamPathVertex(-50, -5),
+                new JuiceStreamPathVertex(0, 0),
+                new JuiceStreamPathVertex(70, 35),
+                new JuiceStreamPathVertex(100, 50),
+                new JuiceStreamPathVertex(100, 50),
+            }));
+
+            path.Clear();
+            path.SetVertexPosition(0, 10);
+            path.ResampleVertices(Array.Empty<double>());
+            Assert.That(path.Vertices, Is.EqualTo(new[]
+            {
+                new JuiceStreamPathVertex(0, 10)
+            }));
+        }
+
+        [Test]
+        public void TestRandomConvertFromSliderPath()
+        {
+            var rng = new Random(1);
+            var path = new JuiceStreamPath();
+            var sliderPath = new SliderPath();
+
+            for (int iteration = 0; iteration < 10000; iteration++)
+            {
+                sliderPath.ControlPoints.Clear();
+
+                do
+                {
+                    int start = sliderPath.ControlPoints.Count;
+
+                    do
+                    {
+                        float x = (float)(rng.NextDouble() * 1e3);
+                        float y = (float)(rng.NextDouble() * 1e3);
+                        sliderPath.ControlPoints.Add(new PathControlPoint(new Vector2(x, y)));
+                    } while (rng.Next(2) != 0);
+
+                    int length = sliderPath.ControlPoints.Count - start + 1;
+                    sliderPath.ControlPoints[start].Type.Value = length <= 2 ? PathType.Linear : length == 3 ? PathType.PerfectCurve : PathType.Bezier;
+                } while (rng.Next(3) != 0);
+
+                if (rng.Next(5) == 0)
+                    sliderPath.ExpectedDistance.Value = rng.NextDouble() * 3e3;
+                else
+                    sliderPath.ExpectedDistance.Value = null;
+
+                path.ConvertFromSliderPath(sliderPath);
+                Assert.That(path.Vertices[0].Distance, Is.EqualTo(0));
+                Assert.That(path.Distance, Is.EqualTo(sliderPath.Distance).Within(1e-3));
+                assertInvariants(path.Vertices, true);
+
+                double[] sampleDistances = Enumerable.Range(0, 10)
+                                                     .Select(_ => rng.NextDouble() * sliderPath.Distance)
+                                                     .ToArray();
+
+                foreach (double distance in sampleDistances)
+                {
+                    float expected = sliderPath.PositionAt(distance / sliderPath.Distance).X;
+                    Assert.That(path.PositionAtDistance(distance), Is.EqualTo(expected).Within(1e-3));
+                }
+
+                path.ResampleVertices(sampleDistances);
+                assertInvariants(path.Vertices, true);
+
+                foreach (double distance in sampleDistances)
+                {
+                    float expected = sliderPath.PositionAt(distance / sliderPath.Distance).X;
+                    Assert.That(path.PositionAtDistance(distance), Is.EqualTo(expected).Within(1e-3));
+                }
+            }
+        }
+
+        [Test]
+        public void TestRandomConvertToSliderPath()
+        {
+            var rng = new Random(1);
+            var path = new JuiceStreamPath();
+            var sliderPath = new SliderPath();
+
+            for (int iteration = 0; iteration < 10000; iteration++)
+            {
+                path.Clear();
+
+                do
+                {
+                    double distance = rng.NextDouble() * 1e3;
+                    float x = (float)(rng.NextDouble() * 1e3);
+                    path.Add(distance, x);
+                } while (rng.Next(5) != 0);
+
+                float sliderStartY = (float)(rng.NextDouble() * JuiceStreamPath.OSU_PLAYFIELD_HEIGHT);
+
+                path.ConvertToSliderPath(sliderPath, sliderStartY);
+                Assert.That(sliderPath.Distance, Is.EqualTo(path.Distance).Within(1e-3));
+                Assert.That(sliderPath.ControlPoints[0].Position.Value.X, Is.EqualTo(path.Vertices[0].X));
+                assertInvariants(path.Vertices, true);
+
+                foreach (var point in sliderPath.ControlPoints)
+                {
+                    Assert.That(point.Type.Value, Is.EqualTo(PathType.Linear).Or.Null);
+                    Assert.That(sliderStartY + point.Position.Value.Y, Is.InRange(0, JuiceStreamPath.OSU_PLAYFIELD_HEIGHT));
+                }
+
+                for (int i = 0; i < 10; i++)
+                {
+                    double distance = rng.NextDouble() * path.Distance;
+                    float expected = path.PositionAtDistance(distance);
+                    Assert.That(sliderPath.PositionAt(distance / sliderPath.Distance).X, Is.EqualTo(expected).Within(1e-3));
+                }
+            }
+        }
+
+        [Test]
+        public void TestInvalidation()
+        {
+            var path = new JuiceStreamPath();
+            Assert.That(path.InvalidationID, Is.EqualTo(1));
+            int previousId = path.InvalidationID;
+
+            path.InsertVertex(10);
+            checkNewId();
+
+            path.SetVertexPosition(1, 5);
+            checkNewId();
+
+            path.Add(20, 0);
+            checkNewId();
+
+            path.RemoveVertices((v, _) => v.Distance == 20);
+            checkNewId();
+
+            path.ResampleVertices(new double[] { 5, 10, 15 });
+            checkNewId();
+
+            path.Clear();
+            checkNewId();
+
+            path.ConvertFromSliderPath(new SliderPath());
+            checkNewId();
+
+            void checkNewId()
+            {
+                Assert.That(path.InvalidationID, Is.Not.EqualTo(previousId));
+                previousId = path.InvalidationID;
+            }
+        }
+
+        private void assertInvariants(IReadOnlyList<JuiceStreamPathVertex> vertices, bool checkSlope)
+        {
+            Assert.That(vertices, Is.Not.Empty);
+
+            for (int i = 0; i < vertices.Count; i++)
+            {
+                Assert.That(double.IsFinite(vertices[i].Distance));
+                Assert.That(float.IsFinite(vertices[i].X));
+            }
+
+            for (int i = 1; i < vertices.Count; i++)
+            {
+                Assert.That(vertices[i].Distance, Is.GreaterThanOrEqualTo(vertices[i - 1].Distance));
+
+                if (!checkSlope) continue;
+
+                float xDiff = Math.Abs(vertices[i].X - vertices[i - 1].X);
+                double distanceDiff = vertices[i].Distance - vertices[i - 1].Distance;
+                Assert.That(xDiff, Is.LessThanOrEqualTo(distanceDiff).Within(Precision.FLOAT_EPSILON));
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Mods/CatchModMirrorTest.cs
+++ b/osu.Game.Rulesets.Catch.Tests/Mods/CatchModMirrorTest.cs
@ -0,0 +1,120 @@
+// 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.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Catch.Beatmaps;
+using osu.Game.Rulesets.Catch.Mods;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Objects;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Tests.Mods
+{
+    [TestFixture]
+    public class CatchModMirrorTest
+    {
+        [Test]
+        public void TestModMirror()
+        {
+            IBeatmap original = createBeatmap(false);
+            IBeatmap mirrored = createBeatmap(true);
+
+            assertEffectivePositionsMirrored(original, mirrored);
+        }
+
+        private static IBeatmap createBeatmap(bool withMirrorMod)
+        {
+            var beatmap = createRawBeatmap();
+            var mirrorMod = new CatchModMirror();
+
+            var beatmapProcessor = new CatchBeatmapProcessor(beatmap);
+            beatmapProcessor.PreProcess();
+
+            foreach (var hitObject in beatmap.HitObjects)
+                hitObject.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+
+            beatmapProcessor.PostProcess();
+
+            if (withMirrorMod)
+                mirrorMod.ApplyToBeatmap(beatmap);
+
+            return beatmap;
+        }
+
+        private static IBeatmap createRawBeatmap() => new Beatmap
+        {
+            HitObjects = new List<HitObject>
+            {
+                new Fruit
+                {
+                    OriginalX = 150,
+                    StartTime = 0
+                },
+                new Fruit
+                {
+                    OriginalX = 450,
+                    StartTime = 500
+                },
+                new JuiceStream
+                {
+                    OriginalX = 250,
+                    Path = new SliderPath
+                    {
+                        ControlPoints =
+                        {
+                            new PathControlPoint(new Vector2(-100, 1)),
+                            new PathControlPoint(new Vector2(0, 2)),
+                            new PathControlPoint(new Vector2(100, 3)),
+                            new PathControlPoint(new Vector2(0, 4))
+                        }
+                    },
+                    StartTime = 1000,
+                },
+                new BananaShower
+                {
+                    StartTime = 5000,
+                    Duration = 5000
+                }
+            }
+        };
+
+        private static void assertEffectivePositionsMirrored(IBeatmap original, IBeatmap mirrored)
+        {
+            if (original.HitObjects.Count != mirrored.HitObjects.Count)
+                Assert.Fail($"Top-level object count mismatch (original: {original.HitObjects.Count}, mirrored: {mirrored.HitObjects.Count})");
+
+            for (int i = 0; i < original.HitObjects.Count; ++i)
+            {
+                var originalObject = (CatchHitObject)original.HitObjects[i];
+                var mirroredObject = (CatchHitObject)mirrored.HitObjects[i];
+
+                // banana showers themselves are exempt, as we only really care about their nested bananas' positions.
+                if (!effectivePositionMirrored(originalObject, mirroredObject) && !(originalObject is BananaShower))
+                    Assert.Fail($"{originalObject.GetType().Name} at time {originalObject.StartTime} is not mirrored ({printEffectivePositions(originalObject, mirroredObject)})");
+
+                if (originalObject.NestedHitObjects.Count != mirroredObject.NestedHitObjects.Count)
+                    Assert.Fail($"{originalObject.GetType().Name} nested object count mismatch (original: {originalObject.NestedHitObjects.Count}, mirrored: {mirroredObject.NestedHitObjects.Count})");
+
+                for (int j = 0; j < originalObject.NestedHitObjects.Count; ++j)
+                {
+                    var originalNested = (CatchHitObject)originalObject.NestedHitObjects[j];
+                    var mirroredNested = (CatchHitObject)mirroredObject.NestedHitObjects[j];
+
+                    if (!effectivePositionMirrored(originalNested, mirroredNested))
+                        Assert.Fail($"{originalObject.GetType().Name}'s nested {originalNested.GetType().Name} at time {originalObject.StartTime} is not mirrored ({printEffectivePositions(originalNested, mirroredNested)})");
+                }
+            }
+        }
+
+        private static string printEffectivePositions(CatchHitObject original, CatchHitObject mirrored)
+            => $"original X: {original.EffectiveX}, mirrored X is: {mirrored.EffectiveX}, mirrored X should be: {CatchPlayfield.WIDTH - original.EffectiveX}";
+
+        private static bool effectivePositionMirrored(CatchHitObject original, CatchHitObject mirrored)
+            => Precision.AlmostEquals(original.EffectiveX, CatchPlayfield.WIDTH - mirrored.EffectiveX);
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/Resources/old-skin/skin.ini
+++ b/osu.Game.Rulesets.Catch.Tests/Resources/old-skin/skin.ini
@ -0,0 +1,2 @@
+[General]
+// no version specified means v1
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatchSkinConfiguration.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatchSkinConfiguration.cs
@ -0,0 +1,109 @@
+// 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.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Testing;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Catch.Judgements;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Objects.Drawables;
+using osu.Game.Rulesets.Catch.Skinning;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Skinning;
+using osu.Game.Tests.Visual;
+using Direction = osu.Game.Rulesets.Catch.UI.Direction;
+
+namespace osu.Game.Rulesets.Catch.Tests
+{
+    public class TestSceneCatchSkinConfiguration : OsuTestScene
+    {
+        private Catcher catcher;
+
+        private readonly Container container;
+
+        public TestSceneCatchSkinConfiguration()
+        {
+            Add(container = new Container { RelativeSizeAxes = Axes.Both });
+        }
+
+        [TestCase(false)]
+        [TestCase(true)]
+        public void TestCatcherPlateFlipping(bool flip)
+        {
+            AddStep("setup catcher", () =>
+            {
+                var skin = new TestSkin { FlipCatcherPlate = flip };
+                container.Child = new SkinProvidingContainer(skin)
+                {
+                    Child = catcher = new Catcher(new DroppedObjectContainer())
+                    {
+                        Anchor = Anchor.Centre
+                    }
+                };
+            });
+
+            Fruit fruit = new Fruit();
+
+            AddStep("catch fruit", () => catchFruit(fruit, 20));
+
+            float position = 0;
+
+            AddStep("record fruit position", () => position = getCaughtObjectPosition(fruit));
+
+            AddStep("face left", () => catcher.VisualDirection = Direction.Left);
+
+            if (flip)
+                AddAssert("fruit position changed", () => !Precision.AlmostEquals(getCaughtObjectPosition(fruit), position));
+            else
+                AddAssert("fruit position unchanged", () => Precision.AlmostEquals(getCaughtObjectPosition(fruit), position));
+
+            AddStep("face right", () => catcher.VisualDirection = Direction.Right);
+
+            AddAssert("fruit position restored", () => Precision.AlmostEquals(getCaughtObjectPosition(fruit), position));
+        }
+
+        private float getCaughtObjectPosition(Fruit fruit)
+        {
+            var caughtObject = catcher.ChildrenOfType<CaughtObject>().Single(c => c.HitObject == fruit);
+            return caughtObject.Parent.ToSpaceOfOtherDrawable(caughtObject.Position, catcher).X;
+        }
+
+        private void catchFruit(Fruit fruit, float x)
+        {
+            fruit.ApplyDefaults(new ControlPointInfo(), new BeatmapDifficulty());
+            var drawableFruit = new DrawableFruit(fruit) { X = x };
+            var judgement = fruit.CreateJudgement();
+            catcher.OnNewResult(drawableFruit, new CatchJudgementResult(fruit, judgement)
+            {
+                Type = judgement.MaxResult
+            });
+        }
+
+        private class TestSkin : DefaultSkin
+        {
+            public bool FlipCatcherPlate { get; set; }
+
+            public TestSkin()
+                : base(null)
+            {
+            }
+
+            public override IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
+            {
+                if (lookup is CatchSkinConfiguration config)
+                {
+                    if (config == CatchSkinConfiguration.FlipCatcherPlate)
+                        return SkinUtils.As<TValue>(new Bindable<bool>(FlipCatcherPlate));
+                }
+
+                return base.GetConfig<TLookup, TValue>(lookup);
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatcher.cs
@ -6,8 +6,8 @@ using System.Collections.Generic;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
-using osu.Game.Rulesets.Catch.UI;
 using osu.Framework.Graphics;
+using osu.Game.Rulesets.Catch.UI;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Framework.Utils;
@ -31,7 +31,7 @@ namespace osu.Game.Rulesets.Catch.Tests
        [Resolved]
        private OsuConfigManager config { get; set; }

-        private Container<CaughtObject> droppedObjectContainer;
+        private DroppedObjectContainer droppedObjectContainer;

        private TestCatcher catcher;

@ -43,18 +43,15 @@ namespace osu.Game.Rulesets.Catch.Tests
                CircleSize = 0,
            };

-            var trailContainer = new Container();
-            droppedObjectContainer = new Container<CaughtObject>();
-            catcher = new TestCatcher(trailContainer, droppedObjectContainer, difficulty);
+            droppedObjectContainer = new DroppedObjectContainer();

            Child = new Container
            {
                Anchor = Anchor.Centre,
                Children = new Drawable[]
                {
-                    trailContainer,
                    droppedObjectContainer,
-                    catcher
+                    catcher = new TestCatcher(droppedObjectContainer, difficulty),
                }
            };
        });
@ -188,9 +185,9 @@ namespace osu.Game.Rulesets.Catch.Tests
            AddStep("catch more fruits", () => attemptCatch(() => new Fruit(), 9));
            checkPlate(10);
            AddAssert("caught objects are stacked", () =>
-                catcher.CaughtObjects.All(obj => obj.Y <= Catcher.CAUGHT_FRUIT_VERTICAL_OFFSET) &&
-                catcher.CaughtObjects.Any(obj => obj.Y == Catcher.CAUGHT_FRUIT_VERTICAL_OFFSET) &&
-                catcher.CaughtObjects.Any(obj => obj.Y < -25));
+                catcher.CaughtObjects.All(obj => obj.Y <= 0) &&
+                catcher.CaughtObjects.Any(obj => obj.Y == 0) &&
+                catcher.CaughtObjects.Any(obj => obj.Y < 0));
        }

        [Test]
@ -293,8 +290,8 @@ namespace osu.Game.Rulesets.Catch.Tests
        {
            public IEnumerable<CaughtObject> CaughtObjects => this.ChildrenOfType<CaughtObject>();

-            public TestCatcher(Container trailsTarget, Container<CaughtObject> droppedObjectTarget, BeatmapDifficulty difficulty)
-                : base(trailsTarget, droppedObjectTarget, difficulty)
+            public TestCatcher(DroppedObjectContainer droppedObjectTarget, BeatmapDifficulty difficulty)
+                : base(droppedObjectTarget, difficulty)
            {
            }
        }
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneCatcherArea.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneCatcherArea.cs
@ -6,7 +6,6 @@ using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Framework.Testing;
 using osu.Framework.Threading;
 using osu.Framework.Utils;
@ -78,7 +77,7 @@ namespace osu.Game.Rulesets.Catch.Tests
                {
                    area.OnNewResult(drawable, new CatchJudgementResult(fruit, new CatchJudgement())
                    {
-                        Type = area.MovableCatcher.CanCatch(fruit) ? HitResult.Great : HitResult.Miss
+                        Type = area.Catcher.CanCatch(fruit) ? HitResult.Great : HitResult.Miss
                    });

                    drawable.Expire();
@ -97,18 +96,12 @@ namespace osu.Game.Rulesets.Catch.Tests

            SetContents(_ =>
            {
-                var droppedObjectContainer = new Container<CaughtObject>
-                {
-                    RelativeSizeAxes = Axes.Both
-                };
-
                return new CatchInputManager(catchRuleset)
                {
                    RelativeSizeAxes = Axes.Both,
                    Children = new Drawable[]
                    {
-                        droppedObjectContainer,
-                        new TestCatcherArea(droppedObjectContainer, beatmapDifficulty)
+                        new TestCatcherArea(beatmapDifficulty)
                        {
                            Anchor = Anchor.Centre,
                            Origin = Anchor.TopCentre,
@ -126,12 +119,18 @@ namespace osu.Game.Rulesets.Catch.Tests

        private class TestCatcherArea : CatcherArea
        {
-            public TestCatcherArea(Container<CaughtObject> droppedObjectContainer, BeatmapDifficulty beatmapDifficulty)
-                : base(droppedObjectContainer, beatmapDifficulty)
+            public TestCatcherArea(BeatmapDifficulty beatmapDifficulty)
            {
+                var droppedObjectContainer = new DroppedObjectContainer();
+                Add(droppedObjectContainer);
+
+                Catcher = new Catcher(droppedObjectContainer, beatmapDifficulty)
+                {
+                    X = CatchPlayfield.CENTER_X
+                };
            }

-            public void ToggleHyperDash(bool status) => MovableCatcher.SetHyperDashState(status ? 2 : 1);
+            public void ToggleHyperDash(bool status) => Catcher.SetHyperDashState(status ? 2 : 1);
        }
    }
 }
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneDrawableHitObjects.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneDrawableHitObjects.cs
@ -97,7 +97,7 @@ namespace osu.Game.Rulesets.Catch.Tests

        private bool playfieldIsEmpty => !((CatchPlayfield)drawableRuleset.Playfield).AllHitObjects.Any(h => h.IsAlive);

-        private CatcherAnimationState catcherState => ((CatchPlayfield)drawableRuleset.Playfield).CatcherArea.MovableCatcher.CurrentState;
+        private CatcherAnimationState catcherState => ((CatchPlayfield)drawableRuleset.Playfield).Catcher.CurrentState;

        private void spawnFruits(bool hit = false)
        {
@ -162,7 +162,7 @@ namespace osu.Game.Rulesets.Catch.Tests
            float xCoords = CatchPlayfield.CENTER_X;

            if (drawableRuleset.Playfield is CatchPlayfield catchPlayfield)
-                catchPlayfield.CatcherArea.MovableCatcher.X = xCoords - x_offset;
+                catchPlayfield.Catcher.X = xCoords - x_offset;

            if (hit)
                xCoords -= x_offset;
@ -174,8 +174,8 @@ namespace osu.Game.Rulesets.Catch.Tests

        private void addToPlayfield(DrawableCatchHitObject drawable)
        {
-            foreach (var mod in SelectedMods.Value.OfType<IApplicableToDrawableHitObjects>())
-                mod.ApplyToDrawableHitObjects(new[] { drawable });
+            foreach (var mod in SelectedMods.Value.OfType<IApplicableToDrawableHitObject>())
+                mod.ApplyToDrawableHitObject(drawable);

            drawableRuleset.Playfield.Add(drawable);
        }
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDash.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDash.cs
@ -33,7 +33,7 @@ namespace osu.Game.Rulesets.Catch.Tests
                // this needs to be done within the frame stable context due to how quickly hyperdash state changes occur.
                Player.DrawableRuleset.FrameStableComponents.OnUpdate += d =>
                {
-                    var catcher = Player.ChildrenOfType<CatcherArea>().FirstOrDefault()?.MovableCatcher;
+                    var catcher = Player.ChildrenOfType<Catcher>().FirstOrDefault();

                    if (catcher == null)
                        return;
--- a/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs
+++ b/osu.Game.Rulesets.Catch.Tests/TestSceneHyperDashColouring.cs
@ -47,7 +47,7 @@ namespace osu.Game.Rulesets.Catch.Tests
        }

        [Test]
-        public void TestCustomEndGlowColour()
+        public void TestCustomAfterImageColour()
        {
            var skin = new TestSkin
            {
@ -58,7 +58,7 @@ namespace osu.Game.Rulesets.Catch.Tests
        }

        [Test]
-        public void TestCustomEndGlowColourPriority()
+        public void TestCustomAfterImageColourPriority()
        {
            var skin = new TestSkin
            {
@ -111,39 +111,45 @@ namespace osu.Game.Rulesets.Catch.Tests
            checkHyperDashFruitColour(skin, skin.HyperDashColour);
        }

-        private void checkHyperDashCatcherColour(ISkin skin, Color4 expectedCatcherColour, Color4? expectedEndGlowColour = null)
+        private void checkHyperDashCatcherColour(ISkin skin, Color4 expectedCatcherColour, Color4? expectedAfterImageColour = null)
        {
-            CatcherArea catcherArea = null;
            CatcherTrailDisplay trails = null;
+            Catcher catcher = null;

            AddStep("create hyper-dashing catcher", () =>
            {
-                Child = setupSkinHierarchy(catcherArea = new CatcherArea(new Container<CaughtObject>())
+                CatcherArea catcherArea;
+                Child = setupSkinHierarchy(new Container
                {
                    Anchor = Anchor.Centre,
-                    Origin = Anchor.Centre,
-                    Scale = new Vector2(4f),
+                    Child = catcherArea = new CatcherArea
+                    {
+                        Catcher = catcher = new Catcher(new DroppedObjectContainer())
+                        {
+                            Scale = new Vector2(4)
+                        }
+                    }
                }, skin);
+                trails = catcherArea.ChildrenOfType<CatcherTrailDisplay>().Single();
            });

-            AddStep("get trails container", () =>
+            AddStep("start hyper-dash", () =>
            {
-                trails = catcherArea.OfType<CatcherTrailDisplay>().Single();
-                catcherArea.MovableCatcher.SetHyperDashState(2);
+                catcher.SetHyperDashState(2);
            });

-            AddUntilStep("catcher colour is correct", () => catcherArea.MovableCatcher.Colour == expectedCatcherColour);
+            AddUntilStep("catcher colour is correct", () => catcher.Colour == expectedCatcherColour);

            AddAssert("catcher trails colours are correct", () => trails.HyperDashTrailsColour == expectedCatcherColour);
-            AddAssert("catcher end-glow colours are correct", () => trails.EndGlowSpritesColour == (expectedEndGlowColour ?? expectedCatcherColour));
+            AddAssert("catcher after-image colours are correct", () => trails.HyperDashAfterImageColour == (expectedAfterImageColour ?? expectedCatcherColour));

            AddStep("finish hyper-dashing", () =>
            {
-                catcherArea.MovableCatcher.SetHyperDashState(1);
-                catcherArea.MovableCatcher.FinishTransforms();
+                catcher.SetHyperDashState();
+                catcher.FinishTransforms();
            });

-            AddAssert("catcher colour returned to white", () => catcherArea.MovableCatcher.Colour == Color4.White);
+            AddAssert("catcher colour returned to white", () => catcher.Colour == Color4.White);
        }

        private void checkHyperDashFruitColour(ISkin skin, Color4 expectedColour)
--- a/osu.Game.Rulesets.Catch.Tests/osu.Game.Rulesets.Catch.Tests.csproj
+++ b/osu.Game.Rulesets.Catch.Tests/osu.Game.Rulesets.Catch.Tests.csproj
@ -4,7 +4,7 @@
    <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.10.0" />
    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
    <PackageReference Update="Microsoft.EntityFrameworkCore.Sqlite" Version="2.1.4" />
  </ItemGroup>
  <PropertyGroup Label="Project">
--- a/osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapConverter.cs
+++ b/osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapConverter.cs
@ -23,7 +23,8 @@ namespace osu.Game.Rulesets.Catch.Beatmaps

        protected override IEnumerable<CatchHitObject> ConvertHitObject(HitObject obj, IBeatmap beatmap, CancellationToken cancellationToken)
        {
-            var positionData = obj as IHasXPosition;
+            var xPositionData = obj as IHasXPosition;
+            var yPositionData = obj as IHasYPosition;
            var comboData = obj as IHasCombo;

            switch (obj)
@ -36,10 +37,11 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                        Path = curveData.Path,
                        NodeSamples = curveData.NodeSamples,
                        RepeatCount = curveData.RepeatCount,
-                        X = positionData?.X ?? 0,
+                        X = xPositionData?.X ?? 0,
                        NewCombo = comboData?.NewCombo ?? false,
                        ComboOffset = comboData?.ComboOffset ?? 0,
-                        LegacyLastTickOffset = (obj as IHasLegacyLastTickOffset)?.LegacyLastTickOffset ?? 0
+                        LegacyLastTickOffset = (obj as IHasLegacyLastTickOffset)?.LegacyLastTickOffset ?? 0,
+                        LegacyConvertedY = yPositionData?.Y ?? CatchHitObject.DEFAULT_LEGACY_CONVERT_Y
                    }.Yield();

                case IHasDuration endTime:
@ -59,7 +61,8 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                        Samples = obj.Samples,
                        NewCombo = comboData?.NewCombo ?? false,
                        ComboOffset = comboData?.ComboOffset ?? 0,
-                        X = positionData?.X ?? 0
+                        X = xPositionData?.X ?? 0,
+                        LegacyConvertedY = yPositionData?.Y ?? CatchHitObject.DEFAULT_LEGACY_CONVERT_Y
                    }.Yield();
            }
        }
--- a/osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapProcessor.cs
+++ b/osu.Game.Rulesets.Catch/Beatmaps/CatchBeatmapProcessor.cs
@ -8,7 +8,6 @@ using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.MathUtils;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.UI;
-using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Objects.Types;

 namespace osu.Game.Rulesets.Catch.Beatmaps
@ -17,6 +16,8 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
    {
        public const int RNG_SEED = 1337;

+        public bool HardRockOffsets { get; set; }
+
        public CatchBeatmapProcessor(IBeatmap beatmap)
            : base(beatmap)
        {
@ -43,11 +44,10 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
            }
        }

-        public static void ApplyPositionOffsets(IBeatmap beatmap, params Mod[] mods)
+        public void ApplyPositionOffsets(IBeatmap beatmap)
        {
            var rng = new FastRandom(RNG_SEED);

-            bool shouldApplyHardRockOffset = mods.Any(m => m is ModHardRock);
            float? lastPosition = null;
            double lastStartTime = 0;

@ -58,7 +58,7 @@ namespace osu.Game.Rulesets.Catch.Beatmaps
                switch (obj)
                {
                    case Fruit fruit:
-                        if (shouldApplyHardRockOffset)
+                        if (HardRockOffsets)
                            applyHardRockOffset(fruit, ref lastPosition, ref lastStartTime, rng);
                        break;

--- a/osu.Game.Rulesets.Catch/CatchRuleset.cs
+++ b/osu.Game.Rulesets.Catch/CatchRuleset.cs
@ -22,7 +22,9 @@ using osu.Game.Rulesets.Scoring;
 using osu.Game.Scoring;
 using System;
 using osu.Framework.Extensions.EnumExtensions;
+using osu.Game.Rulesets.Catch.Edit;
 using osu.Game.Rulesets.Catch.Skinning.Legacy;
+using osu.Game.Rulesets.Edit;
 using osu.Game.Skinning;

 namespace osu.Game.Rulesets.Catch
@ -115,6 +117,7 @@ namespace osu.Game.Rulesets.Catch
                    {
                        new CatchModDifficultyAdjust(),
                        new CatchModClassic(),
+                        new CatchModMirror(),
                    };

                case ModType.Automation:
@ -128,7 +131,8 @@ namespace osu.Game.Rulesets.Catch
                    return new Mod[]
                    {
                        new MultiMod(new ModWindUp(), new ModWindDown()),
-                        new CatchModFloatingFruits()
+                        new CatchModFloatingFruits(),
+                        new CatchModMuted(),
                    };

                default:
@ -175,12 +179,14 @@ namespace osu.Game.Rulesets.Catch

        public override DifficultyCalculator CreateDifficultyCalculator(WorkingBeatmap beatmap) => new CatchDifficultyCalculator(this, beatmap);

-        public override ISkin CreateLegacySkinProvider(ISkinSource source, IBeatmap beatmap) => new CatchLegacySkinTransformer(source);
+        public override ISkin CreateLegacySkinProvider(ISkin skin, IBeatmap beatmap) => new CatchLegacySkinTransformer(skin);

        public override PerformanceCalculator CreatePerformanceCalculator(DifficultyAttributes attributes, ScoreInfo score) => new CatchPerformanceCalculator(this, attributes, score);

        public int LegacyID => 2;

        public override IConvertibleReplayFrame CreateConvertibleReplayFrame() => new CatchReplayFrame();
+
+        public override HitObjectComposer CreateHitObjectComposer() => new CatchHitObjectComposer(this);
    }
 }
--- a/osu.Game.Rulesets.Catch/CatchSkinComponents.cs
+++ b/osu.Game.Rulesets.Catch/CatchSkinComponents.cs
@ -8,9 +8,7 @@ namespace osu.Game.Rulesets.Catch
        Fruit,
        Banana,
        Droplet,
-        CatcherIdle,
-        CatcherFail,
-        CatcherKiai,
+        Catcher,
        CatchComboCounter
    }
 }
--- a/osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyAttributes.cs
+++ b/osu.Game.Rulesets.Catch/Difficulty/CatchDifficultyAttributes.cs
@ -7,6 +7,6 @@ namespace osu.Game.Rulesets.Catch.Difficulty
 {
    public class CatchDifficultyAttributes : DifficultyAttributes
    {
-        public double ApproachRate;
+        public double ApproachRate { get; set; }
    }
 }
--- a/osu.Game.Rulesets.Catch/Difficulty/CatchPerformanceCalculator.cs
+++ b/osu.Game.Rulesets.Catch/Difficulty/CatchPerformanceCalculator.cs
@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using osu.Framework.Extensions;
 using osu.Game.Rulesets.Difficulty;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Scoring;
@ -33,15 +32,11 @@ namespace osu.Game.Rulesets.Catch.Difficulty
        {
            mods = Score.Mods;

-            fruitsHit = Score.Statistics.GetOrDefault(HitResult.Great);
-            ticksHit = Score.Statistics.GetOrDefault(HitResult.LargeTickHit);
-            tinyTicksHit = Score.Statistics.GetOrDefault(HitResult.SmallTickHit);
-            tinyTicksMissed = Score.Statistics.GetOrDefault(HitResult.SmallTickMiss);
-            misses = Score.Statistics.GetOrDefault(HitResult.Miss);
-
-            // Don't count scores made with supposedly unranked mods
-            if (mods.Any(m => !m.Ranked))
-                return 0;
+            fruitsHit = Score.Statistics.GetValueOrDefault(HitResult.Great);
+            ticksHit = Score.Statistics.GetValueOrDefault(HitResult.LargeTickHit);
+            tinyTicksHit = Score.Statistics.GetValueOrDefault(HitResult.SmallTickHit);
+            tinyTicksMissed = Score.Statistics.GetValueOrDefault(HitResult.SmallTickMiss);
+            misses = Score.Statistics.GetValueOrDefault(HitResult.Miss);

            // We are heavily relying on aim in catch the beat
            double value = Math.Pow(5.0 * Math.Max(1.0, Attributes.StarRating / 0.0049) - 4.0, 2.0) / 100000.0;
--- a/osu.Game.Rulesets.Catch/Edit/BananaShowerCompositionTool.cs
+++ b/osu.Game.Rulesets.Catch/Edit/BananaShowerCompositionTool.cs
@ -0,0 +1,24 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class BananaShowerCompositionTool : HitObjectCompositionTool
+    {
+        public BananaShowerCompositionTool()
+            : base(nameof(BananaShower))
+        {
+        }
+
+        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Spinners);
+
+        public override PlacementBlueprint CreatePlacementBlueprint() => new BananaShowerPlacementBlueprint();
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerPlacementBlueprint.cs
@ -0,0 +1,73 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Input.Events;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class BananaShowerPlacementBlueprint : CatchPlacementBlueprint<BananaShower>
+    {
+        private readonly TimeSpanOutline outline;
+
+        public BananaShowerPlacementBlueprint()
+        {
+            InternalChild = outline = new TimeSpanOutline();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            outline.UpdateFrom(HitObjectContainer, HitObject);
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            switch (PlacementActive)
+            {
+                case PlacementState.Waiting:
+                    if (e.Button != MouseButton.Left) break;
+
+                    BeginPlacement(true);
+                    return true;
+
+                case PlacementState.Active:
+                    if (e.Button != MouseButton.Right) break;
+
+                    // If the duration is negative, swap the start and the end time to make the duration positive.
+                    if (HitObject.Duration < 0)
+                    {
+                        HitObject.StartTime = HitObject.EndTime;
+                        HitObject.Duration = -HitObject.Duration;
+                    }
+
+                    EndPlacement(HitObject.Duration > 0);
+                    return true;
+            }
+
+            return base.OnMouseDown(e);
+        }
+
+        public override void UpdateTimeAndPosition(SnapResult result)
+        {
+            base.UpdateTimeAndPosition(result);
+
+            if (!(result.Time is double time)) return;
+
+            switch (PlacementActive)
+            {
+                case PlacementState.Waiting:
+                    HitObject.StartTime = time;
+                    break;
+
+                case PlacementState.Active:
+                    HitObject.EndTime = time;
+                    break;
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/BananaShowerSelectionBlueprint.cs
@ -0,0 +1,15 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Rulesets.Catch.Objects;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class BananaShowerSelectionBlueprint : CatchSelectionBlueprint<BananaShower>
+    {
+        public BananaShowerSelectionBlueprint(BananaShower hitObject)
+            : base(hitObject)
+        {
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchPlacementBlueprint.cs
@ -0,0 +1,30 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class CatchPlacementBlueprint<THitObject> : PlacementBlueprint
+        where THitObject : CatchHitObject, new()
+    {
+        protected new THitObject HitObject => (THitObject)base.HitObject;
+
+        protected ScrollingHitObjectContainer HitObjectContainer => (ScrollingHitObjectContainer)playfield.HitObjectContainer;
+
+        [Resolved]
+        private Playfield playfield { get; set; }
+
+        public CatchPlacementBlueprint()
+            : base(new THitObject())
+        {
+        }
+
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/CatchSelectionBlueprint.cs
@ -0,0 +1,39 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public abstract class CatchSelectionBlueprint<THitObject> : HitObjectSelectionBlueprint<THitObject>
+        where THitObject : CatchHitObject
+    {
+        protected override bool AlwaysShowWhenSelected => true;
+
+        public override Vector2 ScreenSpaceSelectionPoint
+        {
+            get
+            {
+                Vector2 position = CatchHitObjectUtils.GetStartPosition(HitObjectContainer, HitObject);
+                return HitObjectContainer.ToScreenSpace(position + new Vector2(0, HitObjectContainer.DrawHeight));
+            }
+        }
+
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => SelectionQuad.Contains(screenSpacePos);
+
+        protected ScrollingHitObjectContainer HitObjectContainer => (ScrollingHitObjectContainer)playfield.HitObjectContainer;
+
+        [Resolved]
+        private Playfield playfield { get; set; }
+
+        protected CatchSelectionBlueprint(THitObject hitObject)
+            : base(hitObject)
+        {
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/EditablePath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/EditablePath.cs
@ -0,0 +1,190 @@
+// 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.Diagnostics;
+using System.Linq;
+using JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Primitives;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public abstract class EditablePath : CompositeDrawable
+    {
+        public int PathId => path.InvalidationID;
+
+        public IReadOnlyList<JuiceStreamPathVertex> Vertices => path.Vertices;
+
+        public int VertexCount => path.Vertices.Count;
+
+        protected readonly Func<float, double> PositionToDistance;
+
+        protected IReadOnlyList<VertexState> VertexStates => vertexStates;
+
+        private readonly JuiceStreamPath path = new JuiceStreamPath();
+
+        // Invariant: `path.Vertices.Count == vertexStates.Count`
+        private readonly List<VertexState> vertexStates = new List<VertexState>
+        {
+            new VertexState { IsFixed = true }
+        };
+
+        private readonly List<VertexState> previousVertexStates = new List<VertexState>();
+
+        [Resolved(CanBeNull = true)]
+        [CanBeNull]
+        private IBeatSnapProvider beatSnapProvider { get; set; }
+
+        protected EditablePath(Func<float, double> positionToDistance)
+        {
+            PositionToDistance = positionToDistance;
+
+            Anchor = Anchor.BottomLeft;
+        }
+
+        public void UpdateFrom(ScrollingHitObjectContainer hitObjectContainer, JuiceStream hitObject)
+        {
+            while (path.Vertices.Count < InternalChildren.Count)
+                RemoveInternal(InternalChildren[^1]);
+
+            while (InternalChildren.Count < path.Vertices.Count)
+                AddInternal(new VertexPiece());
+
+            double distanceToYFactor = -hitObjectContainer.LengthAtTime(hitObject.StartTime, hitObject.StartTime + 1 / hitObject.Velocity);
+
+            for (int i = 0; i < VertexCount; i++)
+            {
+                var piece = (VertexPiece)InternalChildren[i];
+                var vertex = path.Vertices[i];
+                piece.Position = new Vector2(vertex.X, (float)(vertex.Distance * distanceToYFactor));
+                piece.UpdateFrom(vertexStates[i]);
+            }
+        }
+
+        public void InitializeFromHitObject(JuiceStream hitObject)
+        {
+            var sliderPath = hitObject.Path;
+            path.ConvertFromSliderPath(sliderPath);
+
+            // If the original slider path has non-linear type segments, resample the vertices at nested hit object times to reduce the number of vertices.
+            if (sliderPath.ControlPoints.Any(p => p.Type.Value != null && p.Type.Value != PathType.Linear))
+            {
+                path.ResampleVertices(hitObject.NestedHitObjects
+                                               .Skip(1).TakeWhile(h => !(h is Fruit)) // Only droplets in the first span are used.
+                                               .Select(h => (h.StartTime - hitObject.StartTime) * hitObject.Velocity));
+            }
+
+            vertexStates.Clear();
+            vertexStates.AddRange(path.Vertices.Select((_, i) => new VertexState
+            {
+                IsFixed = i == 0
+            }));
+        }
+
+        public void UpdateHitObjectFromPath(JuiceStream hitObject)
+        {
+            path.ConvertToSliderPath(hitObject.Path, hitObject.LegacyConvertedY);
+
+            if (beatSnapProvider == null) return;
+
+            double endTime = hitObject.StartTime + path.Distance / hitObject.Velocity;
+            double snappedEndTime = beatSnapProvider.SnapTime(endTime, hitObject.StartTime);
+            hitObject.Path.ExpectedDistance.Value = (snappedEndTime - hitObject.StartTime) * hitObject.Velocity;
+        }
+
+        public Vector2 ToRelativePosition(Vector2 screenSpacePosition)
+        {
+            return ToLocalSpace(screenSpacePosition) - new Vector2(0, DrawHeight);
+        }
+
+        protected override bool ComputeIsMaskedAway(RectangleF maskingBounds) => false;
+
+        protected int AddVertex(double distance, float x)
+        {
+            int index = path.InsertVertex(distance);
+            path.SetVertexPosition(index, x);
+            vertexStates.Insert(index, new VertexState());
+
+            correctFixedVertexPositions();
+
+            Debug.Assert(vertexStates.Count == VertexCount);
+            return index;
+        }
+
+        protected bool RemoveVertex(int index)
+        {
+            if (index < 0 || index >= path.Vertices.Count)
+                return false;
+
+            if (vertexStates[index].IsFixed)
+                return false;
+
+            path.RemoveVertices((_, i) => i == index);
+
+            vertexStates.RemoveAt(index);
+            if (vertexStates.Count == 0)
+                vertexStates.Add(new VertexState());
+
+            Debug.Assert(vertexStates.Count == VertexCount);
+            return true;
+        }
+
+        protected void MoveSelectedVertices(double distanceDelta, float xDelta)
+        {
+            // Because the vertex list may be reordered due to distance change, the state list must be reordered as well.
+            previousVertexStates.Clear();
+            previousVertexStates.AddRange(vertexStates);
+
+            // We will recreate the path from scratch. Note that `Clear` leaves the first vertex.
+            int vertexCount = VertexCount;
+            path.Clear();
+            vertexStates.RemoveRange(1, vertexCount - 1);
+
+            for (int i = 1; i < vertexCount; i++)
+            {
+                var state = previousVertexStates[i];
+                double distance = state.VertexBeforeChange.Distance;
+                if (state.IsSelected)
+                    distance += distanceDelta;
+
+                int newIndex = path.InsertVertex(Math.Max(0, distance));
+                vertexStates.Insert(newIndex, state);
+            }
+
+            // First, restore positions of the non-selected vertices.
+            for (int i = 0; i < vertexCount; i++)
+            {
+                if (!vertexStates[i].IsSelected && !vertexStates[i].IsFixed)
+                    path.SetVertexPosition(i, vertexStates[i].VertexBeforeChange.X);
+            }
+
+            // Then, move the selected vertices.
+            for (int i = 0; i < vertexCount; i++)
+            {
+                if (vertexStates[i].IsSelected && !vertexStates[i].IsFixed)
+                    path.SetVertexPosition(i, vertexStates[i].VertexBeforeChange.X + xDelta);
+            }
+
+            // Finally, correct the position of fixed vertices.
+            correctFixedVertexPositions();
+        }
+
+        private void correctFixedVertexPositions()
+        {
+            for (int i = 0; i < VertexCount; i++)
+            {
+                if (vertexStates[i].IsFixed)
+                    path.SetVertexPosition(i, vertexStates[i].VertexBeforeChange.X);
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/FruitOutline.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/FruitOutline.cs
@ -0,0 +1,34 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.Skinning.Default;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class FruitOutline : CompositeDrawable
+    {
+        public FruitOutline()
+        {
+            Anchor = Anchor.BottomLeft;
+            Origin = Anchor.Centre;
+            InternalChild = new BorderPiece();
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour osuColour)
+        {
+            Colour = osuColour.Yellow;
+        }
+
+        public void UpdateFrom(CatchHitObject hitObject)
+        {
+            Scale = new Vector2(hitObject.Scale);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/NestedOutlineContainer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/NestedOutlineContainer.cs
@ -0,0 +1,48 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Primitives;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.UI.Scrolling;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class NestedOutlineContainer : CompositeDrawable
+    {
+        private readonly List<CatchHitObject> nestedHitObjects = new List<CatchHitObject>();
+
+        public NestedOutlineContainer()
+        {
+            Anchor = Anchor.BottomLeft;
+        }
+
+        public void UpdateNestedObjectsFrom(ScrollingHitObjectContainer hitObjectContainer, CatchHitObject parentHitObject)
+        {
+            nestedHitObjects.Clear();
+            nestedHitObjects.AddRange(parentHitObject.NestedHitObjects
+                                                     .OfType<CatchHitObject>()
+                                                     .Where(h => !(h is TinyDroplet)));
+
+            while (nestedHitObjects.Count < InternalChildren.Count)
+                RemoveInternal(InternalChildren[^1]);
+
+            while (InternalChildren.Count < nestedHitObjects.Count)
+                AddInternal(new FruitOutline());
+
+            for (int i = 0; i < nestedHitObjects.Count; i++)
+            {
+                var hitObject = nestedHitObjects[i];
+                var outline = (FruitOutline)InternalChildren[i];
+                outline.Position = CatchHitObjectUtils.GetStartPosition(hitObjectContainer, hitObject) - Position;
+                outline.UpdateFrom(hitObject);
+                outline.Scale *= hitObject is Droplet ? 0.5f : 1;
+            }
+        }
+
+        protected override bool ComputeIsMaskedAway(RectangleF maskingBounds) => false;
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/PlacementEditablePath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/PlacementEditablePath.cs
@ -0,0 +1,49 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Game.Rulesets.Catch.Objects;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class PlacementEditablePath : EditablePath
+    {
+        /// <summary>
+        /// The original position of the last added vertex.
+        /// This is not same as the last vertex of the current path because the vertex ordering can change.
+        /// </summary>
+        private JuiceStreamPathVertex lastVertex;
+
+        public PlacementEditablePath(Func<float, double> positionToDistance)
+            : base(positionToDistance)
+        {
+        }
+
+        public void AddNewVertex()
+        {
+            var endVertex = Vertices[^1];
+            int index = AddVertex(endVertex.Distance, endVertex.X);
+
+            for (int i = 0; i < VertexCount; i++)
+            {
+                VertexStates[i].IsSelected = i == index;
+                VertexStates[i].IsFixed = i != index;
+                VertexStates[i].VertexBeforeChange = Vertices[i];
+            }
+
+            lastVertex = Vertices[index];
+        }
+
+        /// <summary>
+        /// Move the vertex added by <see cref="AddNewVertex"/> in the last time.
+        /// </summary>
+        public void MoveLastVertex(Vector2 screenSpacePosition)
+        {
+            Vector2 position = ToRelativePosition(screenSpacePosition);
+            double distanceDelta = PositionToDistance(position.Y) - lastVertex.Distance;
+            float xDelta = position.X - lastVertex.X;
+            MoveSelectedVertices(distanceDelta, xDelta);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/ScrollingPath.cs
@ -0,0 +1,77 @@
+// 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.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Lines;
+using osu.Framework.Graphics.Primitives;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class ScrollingPath : CompositeDrawable
+    {
+        private readonly Path drawablePath;
+
+        private readonly List<(double Distance, float X)> vertices = new List<(double, float)>();
+
+        public ScrollingPath()
+        {
+            Anchor = Anchor.BottomLeft;
+
+            InternalChildren = new Drawable[]
+            {
+                drawablePath = new SmoothPath
+                {
+                    PathRadius = 2,
+                    Alpha = 0.5f
+                },
+            };
+        }
+
+        public void UpdatePathFrom(ScrollingHitObjectContainer hitObjectContainer, JuiceStream hitObject)
+        {
+            double distanceToYFactor = -hitObjectContainer.LengthAtTime(hitObject.StartTime, hitObject.StartTime + 1 / hitObject.Velocity);
+
+            computeDistanceXs(hitObject);
+            drawablePath.Vertices = vertices
+                                    .Select(v => new Vector2(v.X, (float)(v.Distance * distanceToYFactor)))
+                                    .ToArray();
+            drawablePath.OriginPosition = drawablePath.PositionInBoundingBox(Vector2.Zero);
+        }
+
+        private void computeDistanceXs(JuiceStream hitObject)
+        {
+            vertices.Clear();
+
+            var sliderVertices = new List<Vector2>();
+            hitObject.Path.GetPathToProgress(sliderVertices, 0, 1);
+
+            if (sliderVertices.Count == 0)
+                return;
+
+            double distance = 0;
+            Vector2 lastPosition = Vector2.Zero;
+
+            for (int repeat = 0; repeat < hitObject.RepeatCount + 1; repeat++)
+            {
+                foreach (var position in sliderVertices)
+                {
+                    distance += Vector2.Distance(lastPosition, position);
+                    lastPosition = position;
+
+                    vertices.Add((distance, position.X));
+                }
+
+                sliderVertices.Reverse();
+            }
+        }
+
+        // Because this has 0x0 size, the contents are otherwise masked away if the start position is outside the screen.
+        protected override bool ComputeIsMaskedAway(RectangleF maskingBounds) => false;
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/SelectionEditablePath.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/SelectionEditablePath.cs
@ -0,0 +1,130 @@
+// 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 JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics.Cursor;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Events;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Screens.Edit;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class SelectionEditablePath : EditablePath, IHasContextMenu
+    {
+        public MenuItem[] ContextMenuItems => getContextMenuItems().ToArray();
+
+        // To handle when the editor is scrolled while dragging.
+        private Vector2 dragStartPosition;
+
+        [Resolved(CanBeNull = true)]
+        [CanBeNull]
+        private IEditorChangeHandler changeHandler { get; set; }
+
+        public SelectionEditablePath(Func<float, double> positionToDistance)
+            : base(positionToDistance)
+        {
+        }
+
+        public void AddVertex(Vector2 relativePosition)
+        {
+            double distance = Math.Max(0, PositionToDistance(relativePosition.Y));
+            int index = AddVertex(distance, relativePosition.X);
+            selectOnly(index);
+        }
+
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => InternalChildren.Any(d => d.ReceivePositionalInputAt(screenSpacePos));
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            int index = getMouseTargetVertex(e.ScreenSpaceMouseDownPosition);
+            if (index == -1 || VertexStates[index].IsFixed)
+                return false;
+
+            if (e.Button == MouseButton.Left && e.ShiftPressed)
+            {
+                RemoveVertex(index);
+                return true;
+            }
+
+            if (e.ControlPressed)
+                VertexStates[index].IsSelected = !VertexStates[index].IsSelected;
+            else if (!VertexStates[index].IsSelected)
+                selectOnly(index);
+
+            // Don't inhibit right click, to show the context menu
+            return e.Button != MouseButton.Right;
+        }
+
+        protected override bool OnDragStart(DragStartEvent e)
+        {
+            int index = getMouseTargetVertex(e.ScreenSpaceMouseDownPosition);
+            if (index == -1 || VertexStates[index].IsFixed)
+                return false;
+
+            if (e.Button != MouseButton.Left)
+                return false;
+
+            dragStartPosition = ToRelativePosition(e.ScreenSpaceMouseDownPosition);
+
+            for (int i = 0; i < VertexCount; i++)
+                VertexStates[i].VertexBeforeChange = Vertices[i];
+
+            changeHandler?.BeginChange();
+            return true;
+        }
+
+        protected override void OnDrag(DragEvent e)
+        {
+            Vector2 mousePosition = ToRelativePosition(e.ScreenSpaceMousePosition);
+            double distanceDelta = PositionToDistance(mousePosition.Y) - PositionToDistance(dragStartPosition.Y);
+            float xDelta = mousePosition.X - dragStartPosition.X;
+            MoveSelectedVertices(distanceDelta, xDelta);
+        }
+
+        protected override void OnDragEnd(DragEndEvent e)
+        {
+            changeHandler?.EndChange();
+        }
+
+        private int getMouseTargetVertex(Vector2 screenSpacePosition)
+        {
+            for (int i = InternalChildren.Count - 1; i >= 0; i--)
+            {
+                if (i < VertexCount && InternalChildren[i].ReceivePositionalInputAt(screenSpacePosition))
+                    return i;
+            }
+
+            return -1;
+        }
+
+        private IEnumerable<MenuItem> getContextMenuItems()
+        {
+            int selectedCount = VertexStates.Count(state => state.IsSelected);
+
+            if (selectedCount != 0)
+                yield return new OsuMenuItem($"Delete selected {(selectedCount == 1 ? "vertex" : $"{selectedCount} vertices")}", MenuItemType.Destructive, deleteSelectedVertices);
+        }
+
+        private void selectOnly(int index)
+        {
+            for (int i = 0; i < VertexCount; i++)
+                VertexStates[i].IsSelected = i == index;
+        }
+
+        private void deleteSelectedVertices()
+        {
+            for (int i = VertexCount - 1; i >= 0; i--)
+            {
+                if (VertexStates[i].IsSelected)
+                    RemoveVertex(i);
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/TimeSpanOutline.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/TimeSpanOutline.cs
@ -0,0 +1,63 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK.Graphics;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class TimeSpanOutline : CompositeDrawable
+    {
+        private const float border_width = 4;
+
+        private const float opacity_when_empty = 0.5f;
+
+        private bool isEmpty = true;
+
+        public TimeSpanOutline()
+        {
+            Anchor = Origin = Anchor.BottomLeft;
+            RelativeSizeAxes = Axes.X;
+
+            Masking = true;
+            BorderThickness = border_width;
+            Alpha = opacity_when_empty;
+
+            // A box is needed to make the border visible.
+            InternalChild = new Box
+            {
+                RelativeSizeAxes = Axes.Both,
+                Colour = Color4.Transparent
+            };
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(OsuColour osuColour)
+        {
+            BorderColour = osuColour.Yellow;
+        }
+
+        public void UpdateFrom(ScrollingHitObjectContainer hitObjectContainer, BananaShower hitObject)
+        {
+            float startY = hitObjectContainer.PositionAtTime(hitObject.StartTime);
+            float endY = hitObjectContainer.PositionAtTime(hitObject.EndTime);
+
+            Y = Math.Max(startY, endY);
+            float height = Math.Abs(startY - endY);
+
+            bool wasEmpty = isEmpty;
+            isEmpty = height == 0;
+            if (wasEmpty != isEmpty)
+                this.FadeTo(isEmpty ? opacity_when_empty : 1f, 150);
+
+            Height = Math.Max(height, border_width);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexPiece.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexPiece.cs
@ -0,0 +1,31 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Shapes;
+using osu.Game.Graphics;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    public class VertexPiece : Circle
+    {
+        [Resolved]
+        private OsuColour osuColour { get; set; }
+
+        public VertexPiece()
+        {
+            Anchor = Anchor.BottomLeft;
+            Origin = Anchor.Centre;
+            Size = new Vector2(15);
+        }
+
+        public void UpdateFrom(VertexState state)
+        {
+            Colour = state.IsSelected ? osuColour.Yellow.Lighten(1) : osuColour.Yellow;
+            Alpha = state.IsFixed ? 0.5f : 1;
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexState.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/Components/VertexState.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.Catch.Objects;
+
+#nullable enable
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints.Components
+{
+    /// <summary>
+    /// Holds the state of a vertex in the path of a <see cref="EditablePath"/>.
+    /// </summary>
+    public class VertexState
+    {
+        /// <summary>
+        /// Whether the vertex is selected.
+        /// </summary>
+        public bool IsSelected { get; set; }
+
+        /// <summary>
+        /// Whether the vertex can be moved or deleted.
+        /// </summary>
+        public bool IsFixed { get; set; }
+
+        /// <summary>
+        /// The position of the vertex before a vertex moving operation starts.
+        /// This is used to implement "memory-less" moving operations (only the final position matters) to improve UX.
+        /// </summary>
+        public JuiceStreamPathVertex VertexBeforeChange { get; set; }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitPlacementBlueprint.cs
@ -0,0 +1,51 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Input.Events;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class FruitPlacementBlueprint : CatchPlacementBlueprint<Fruit>
+    {
+        private readonly FruitOutline outline;
+
+        public FruitPlacementBlueprint()
+        {
+            InternalChild = outline = new FruitOutline();
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            BeginPlacement();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            outline.Position = CatchHitObjectUtils.GetStartPosition(HitObjectContainer, HitObject);
+            outline.UpdateFrom(HitObject);
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            if (e.Button != MouseButton.Left) return base.OnMouseDown(e);
+
+            EndPlacement(true);
+            return true;
+        }
+
+        public override void UpdateTimeAndPosition(SnapResult result)
+        {
+            base.UpdateTimeAndPosition(result);
+
+            HitObject.X = ToLocalSpace(result.ScreenSpacePosition).X;
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/FruitSelectionBlueprint.cs
@ -0,0 +1,29 @@
+// 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.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class FruitSelectionBlueprint : CatchSelectionBlueprint<Fruit>
+    {
+        private readonly FruitOutline outline;
+
+        public FruitSelectionBlueprint(Fruit hitObject)
+            : base(hitObject)
+        {
+            InternalChild = outline = new FruitOutline();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (!IsSelected) return;
+
+            outline.Position = CatchHitObjectUtils.GetStartPosition(HitObjectContainer, HitObject);
+            outline.UpdateFrom(HitObject);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamPlacementBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamPlacementBlueprint.cs
@ -0,0 +1,128 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Framework.Input;
+using osu.Framework.Input.Events;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class JuiceStreamPlacementBlueprint : CatchPlacementBlueprint<JuiceStream>
+    {
+        private readonly ScrollingPath scrollingPath;
+
+        private readonly NestedOutlineContainer nestedOutlineContainer;
+
+        private readonly PlacementEditablePath editablePath;
+
+        private int lastEditablePathId = -1;
+
+        private InputManager inputManager;
+
+        public JuiceStreamPlacementBlueprint()
+        {
+            InternalChildren = new Drawable[]
+            {
+                scrollingPath = new ScrollingPath(),
+                nestedOutlineContainer = new NestedOutlineContainer(),
+                editablePath = new PlacementEditablePath(positionToDistance)
+            };
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (PlacementActive == PlacementState.Active)
+                editablePath.UpdateFrom(HitObjectContainer, HitObject);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            inputManager = GetContainingInputManager();
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            switch (PlacementActive)
+            {
+                case PlacementState.Waiting:
+                    if (e.Button != MouseButton.Left) break;
+
+                    editablePath.AddNewVertex();
+                    BeginPlacement(true);
+                    return true;
+
+                case PlacementState.Active:
+                    switch (e.Button)
+                    {
+                        case MouseButton.Left:
+                            editablePath.AddNewVertex();
+                            return true;
+
+                        case MouseButton.Right:
+                            EndPlacement(HitObject.Duration > 0);
+                            return true;
+                    }
+
+                    break;
+            }
+
+            return base.OnMouseDown(e);
+        }
+
+        public override void UpdateTimeAndPosition(SnapResult result)
+        {
+            switch (PlacementActive)
+            {
+                case PlacementState.Waiting:
+                    if (!(result.Time is double snappedTime)) return;
+
+                    HitObject.OriginalX = ToLocalSpace(result.ScreenSpacePosition).X;
+                    HitObject.StartTime = snappedTime;
+                    break;
+
+                case PlacementState.Active:
+                    Vector2 unsnappedPosition = inputManager.CurrentState.Mouse.Position;
+                    editablePath.MoveLastVertex(unsnappedPosition);
+                    break;
+
+                default:
+                    return;
+            }
+
+            // Make sure the up-to-date position is used for outlines.
+            Vector2 startPosition = CatchHitObjectUtils.GetStartPosition(HitObjectContainer, HitObject);
+            editablePath.Position = nestedOutlineContainer.Position = scrollingPath.Position = startPosition;
+
+            updateHitObjectFromPath();
+        }
+
+        private void updateHitObjectFromPath()
+        {
+            if (lastEditablePathId == editablePath.PathId)
+                return;
+
+            editablePath.UpdateHitObjectFromPath(HitObject);
+            ApplyDefaultsToHitObject();
+
+            scrollingPath.UpdatePathFrom(HitObjectContainer, HitObject);
+            nestedOutlineContainer.UpdateNestedObjectsFrom(HitObjectContainer, HitObject);
+
+            lastEditablePathId = editablePath.PathId;
+        }
+
+        private double positionToDistance(float relativeYPosition)
+        {
+            double time = HitObjectContainer.TimeAtPosition(relativeYPosition, HitObject.StartTime);
+            return (time - HitObject.StartTime) * HitObject.Velocity;
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamSelectionBlueprint.cs
+++ b/osu.Game.Rulesets.Catch/Edit/Blueprints/JuiceStreamSelectionBlueprint.cs
@ -0,0 +1,187 @@
+// 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 JetBrains.Annotations;
+using osu.Framework.Allocation;
+using osu.Framework.Caching;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Graphics.UserInterface;
+using osu.Framework.Input.Events;
+using osu.Game.Graphics.UserInterface;
+using osu.Game.Rulesets.Catch.Edit.Blueprints.Components;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Screens.Edit;
+using osuTK;
+using osuTK.Input;
+
+namespace osu.Game.Rulesets.Catch.Edit.Blueprints
+{
+    public class JuiceStreamSelectionBlueprint : CatchSelectionBlueprint<JuiceStream>
+    {
+        public override Quad SelectionQuad => HitObjectContainer.ToScreenSpace(getBoundingBox().Offset(new Vector2(0, HitObjectContainer.DrawHeight)));
+
+        public override MenuItem[] ContextMenuItems => getContextMenuItems().ToArray();
+
+        private float minNestedX;
+        private float maxNestedX;
+
+        private readonly ScrollingPath scrollingPath;
+
+        private readonly NestedOutlineContainer nestedOutlineContainer;
+
+        private readonly Cached pathCache = new Cached();
+
+        private readonly SelectionEditablePath editablePath;
+
+        /// <summary>
+        /// The <see cref="JuiceStreamPath.InvalidationID"/> of the <see cref="JuiceStreamPath"/> corresponding the current <see cref="SliderPath"/> of the hit object.
+        /// When the path is edited, the change is detected and the <see cref="SliderPath"/> of the hit object is updated.
+        /// </summary>
+        private int lastEditablePathId = -1;
+
+        /// <summary>
+        /// The <see cref="SliderPath.Version"/> of the current <see cref="SliderPath"/> of the hit object.
+        /// When the <see cref="SliderPath"/> of the hit object is changed by external means, the change is detected and the <see cref="JuiceStreamPath"/> is re-initialized.
+        /// </summary>
+        private int lastSliderPathVersion = -1;
+
+        private Vector2 rightMouseDownPosition;
+
+        [Resolved(CanBeNull = true)]
+        [CanBeNull]
+        private EditorBeatmap editorBeatmap { get; set; }
+
+        public JuiceStreamSelectionBlueprint(JuiceStream hitObject)
+            : base(hitObject)
+        {
+            InternalChildren = new Drawable[]
+            {
+                scrollingPath = new ScrollingPath(),
+                nestedOutlineContainer = new NestedOutlineContainer(),
+                editablePath = new SelectionEditablePath(positionToDistance)
+            };
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            HitObject.DefaultsApplied += onDefaultsApplied;
+            computeObjectBounds();
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            if (!IsSelected) return;
+
+            if (editablePath.PathId != lastEditablePathId)
+                updateHitObjectFromPath();
+
+            Vector2 startPosition = CatchHitObjectUtils.GetStartPosition(HitObjectContainer, HitObject);
+            editablePath.Position = nestedOutlineContainer.Position = scrollingPath.Position = startPosition;
+
+            editablePath.UpdateFrom(HitObjectContainer, HitObject);
+
+            if (pathCache.IsValid) return;
+
+            scrollingPath.UpdatePathFrom(HitObjectContainer, HitObject);
+            nestedOutlineContainer.UpdateNestedObjectsFrom(HitObjectContainer, HitObject);
+
+            pathCache.Validate();
+        }
+
+        protected override void OnSelected()
+        {
+            initializeJuiceStreamPath();
+            base.OnSelected();
+        }
+
+        protected override bool OnMouseDown(MouseDownEvent e)
+        {
+            if (!IsSelected) return base.OnMouseDown(e);
+
+            switch (e.Button)
+            {
+                case MouseButton.Left when e.ControlPressed:
+                    editablePath.AddVertex(editablePath.ToRelativePosition(e.ScreenSpaceMouseDownPosition));
+                    return true;
+
+                case MouseButton.Right:
+                    // Record the mouse position to be used in the "add vertex" action.
+                    rightMouseDownPosition = editablePath.ToRelativePosition(e.ScreenSpaceMouseDownPosition);
+                    break;
+            }
+
+            return base.OnMouseDown(e);
+        }
+
+        private void onDefaultsApplied(HitObject _)
+        {
+            computeObjectBounds();
+            pathCache.Invalidate();
+
+            if (lastSliderPathVersion != HitObject.Path.Version.Value)
+                initializeJuiceStreamPath();
+        }
+
+        private void computeObjectBounds()
+        {
+            minNestedX = HitObject.NestedHitObjects.OfType<CatchHitObject>().Min(nested => nested.OriginalX) - HitObject.OriginalX;
+            maxNestedX = HitObject.NestedHitObjects.OfType<CatchHitObject>().Max(nested => nested.OriginalX) - HitObject.OriginalX;
+        }
+
+        private RectangleF getBoundingBox()
+        {
+            float left = HitObject.OriginalX + minNestedX;
+            float right = HitObject.OriginalX + maxNestedX;
+            float top = HitObjectContainer.PositionAtTime(HitObject.EndTime);
+            float bottom = HitObjectContainer.PositionAtTime(HitObject.StartTime);
+            float objectRadius = CatchHitObject.OBJECT_RADIUS * HitObject.Scale;
+            return new RectangleF(left, top, right - left, bottom - top).Inflate(objectRadius);
+        }
+
+        private double positionToDistance(float relativeYPosition)
+        {
+            double time = HitObjectContainer.TimeAtPosition(relativeYPosition, HitObject.StartTime);
+            return (time - HitObject.StartTime) * HitObject.Velocity;
+        }
+
+        private void initializeJuiceStreamPath()
+        {
+            editablePath.InitializeFromHitObject(HitObject);
+
+            // Record the current ID to update the hit object only when a change is made to the path.
+            lastEditablePathId = editablePath.PathId;
+            lastSliderPathVersion = HitObject.Path.Version.Value;
+        }
+
+        private void updateHitObjectFromPath()
+        {
+            editablePath.UpdateHitObjectFromPath(HitObject);
+            editorBeatmap?.Update(HitObject);
+
+            lastEditablePathId = editablePath.PathId;
+            lastSliderPathVersion = HitObject.Path.Version.Value;
+        }
+
+        private IEnumerable<MenuItem> getContextMenuItems()
+        {
+            yield return new OsuMenuItem("Add vertex", MenuItemType.Standard, () =>
+            {
+                editablePath.AddVertex(rightMouseDownPosition);
+            });
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            HitObject.DefaultsApplied -= onDefaultsApplied;
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/CatchBlueprintContainer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchBlueprintContainer.cs
@ -0,0 +1,38 @@
+// 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.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Screens.Edit.Compose.Components;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class CatchBlueprintContainer : ComposeBlueprintContainer
+    {
+        public CatchBlueprintContainer(CatchHitObjectComposer composer)
+            : base(composer)
+        {
+        }
+
+        protected override SelectionHandler<HitObject> CreateSelectionHandler() => new CatchSelectionHandler();
+
+        public override HitObjectSelectionBlueprint CreateHitObjectBlueprintFor(HitObject hitObject)
+        {
+            switch (hitObject)
+            {
+                case Fruit fruit:
+                    return new FruitSelectionBlueprint(fruit);
+
+                case JuiceStream juiceStream:
+                    return new JuiceStreamSelectionBlueprint(juiceStream);
+
+                case BananaShower bananaShower:
+                    return new BananaShowerSelectionBlueprint(bananaShower);
+            }
+
+            return base.CreateHitObjectBlueprintFor(hitObject);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfield.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfield.cs
@ -0,0 +1,27 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.UI;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class CatchEditorPlayfield : CatchPlayfield
+    {
+        // TODO fixme: the size of the catcher is not changed when circle size is changed in setup screen.
+        public CatchEditorPlayfield(BeatmapDifficulty difficulty)
+            : base(difficulty)
+        {
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            // TODO: honor "hit animation" setting?
+            Catcher.CatchFruitOnPlate = false;
+
+            // TODO: disable hit lighting as well
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectComposer.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.Collections.Generic;
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Edit.Compose.Components;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class CatchHitObjectComposer : HitObjectComposer<CatchHitObject>
+    {
+        public CatchHitObjectComposer(CatchRuleset ruleset)
+            : base(ruleset)
+        {
+        }
+
+        [BackgroundDependencyLoader]
+        private void load()
+        {
+            LayerBelowRuleset.Add(new PlayfieldBorder
+            {
+                RelativeSizeAxes = Axes.Both,
+                PlayfieldBorderStyle = { Value = PlayfieldBorderStyle.Corners }
+            });
+        }
+
+        protected override DrawableRuleset<CatchHitObject> CreateDrawableRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null) =>
+            new DrawableCatchEditorRuleset(ruleset, beatmap, mods);
+
+        protected override IReadOnlyList<HitObjectCompositionTool> CompositionTools => new HitObjectCompositionTool[]
+        {
+            new FruitCompositionTool(),
+            new JuiceStreamCompositionTool(),
+            new BananaShowerCompositionTool()
+        };
+
+        public override SnapResult SnapScreenSpacePositionToValidTime(Vector2 screenSpacePosition)
+        {
+            var result = base.SnapScreenSpacePositionToValidTime(screenSpacePosition);
+            // TODO: implement position snap
+            result.ScreenSpacePosition.X = screenSpacePosition.X;
+            return result;
+        }
+
+        protected override ComposeBlueprintContainer CreateBlueprintContainer() => new CatchBlueprintContainer(this);
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/CatchHitObjectUtils.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchHitObjectUtils.cs
@ -0,0 +1,63 @@
+// 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.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.UI.Scrolling;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    /// <summary>
+    /// Utility functions used by the editor.
+    /// </summary>
+    public static class CatchHitObjectUtils
+    {
+        /// <summary>
+        /// Get the position of the hit object in the playfield based on <see cref="CatchHitObject.OriginalX"/> and <see cref="HitObject.StartTime"/>.
+        /// </summary>
+        public static Vector2 GetStartPosition(ScrollingHitObjectContainer hitObjectContainer, CatchHitObject hitObject)
+        {
+            return new Vector2(hitObject.OriginalX, hitObjectContainer.PositionAtTime(hitObject.StartTime));
+        }
+
+        /// <summary>
+        /// Get the range of horizontal position occupied by the hit object.
+        /// </summary>
+        /// <remarks>
+        /// <see cref="TinyDroplet"/>s are excluded and returns <see cref="PositionRange.EMPTY"/>.
+        /// </remarks>
+        public static PositionRange GetPositionRange(HitObject hitObject)
+        {
+            switch (hitObject)
+            {
+                case Fruit fruit:
+                    return new PositionRange(fruit.OriginalX);
+
+                case Droplet droplet:
+                    return droplet is TinyDroplet ? PositionRange.EMPTY : new PositionRange(droplet.OriginalX);
+
+                case JuiceStream _:
+                    return GetPositionRange(hitObject.NestedHitObjects);
+
+                case BananaShower _:
+                    // A banana shower occupies the whole screen width.
+                    return new PositionRange(0, CatchPlayfield.WIDTH);
+
+                default:
+                    return PositionRange.EMPTY;
+            }
+        }
+
+        /// <summary>
+        /// Get the range of horizontal position occupied by the hit objects.
+        /// </summary>
+        /// <remarks>
+        /// <see cref="TinyDroplet"/>s are excluded.
+        /// </remarks>
+        public static PositionRange GetPositionRange(IEnumerable<HitObject> hitObjects) => hitObjects.Select(GetPositionRange).Aggregate(PositionRange.EMPTY, PositionRange.Union);
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/CatchSelectionHandler.cs
+++ b/osu.Game.Rulesets.Catch/Edit/CatchSelectionHandler.cs
@ -0,0 +1,141 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.UI;
+using osu.Game.Rulesets.UI.Scrolling;
+using osu.Game.Screens.Edit.Compose.Components;
+using osuTK;
+using Direction = osu.Framework.Graphics.Direction;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class CatchSelectionHandler : EditorSelectionHandler
+    {
+        protected ScrollingHitObjectContainer HitObjectContainer => (ScrollingHitObjectContainer)playfield.HitObjectContainer;
+
+        [Resolved]
+        private Playfield playfield { get; set; }
+
+        public override bool HandleMovement(MoveSelectionEvent<HitObject> moveEvent)
+        {
+            var blueprint = moveEvent.Blueprint;
+            Vector2 originalPosition = HitObjectContainer.ToLocalSpace(blueprint.ScreenSpaceSelectionPoint);
+            Vector2 targetPosition = HitObjectContainer.ToLocalSpace(blueprint.ScreenSpaceSelectionPoint + moveEvent.ScreenSpaceDelta);
+
+            float deltaX = targetPosition.X - originalPosition.X;
+            deltaX = limitMovement(deltaX, SelectedItems);
+
+            if (deltaX == 0)
+            {
+                // Even if there is no positional change, there may be a time change.
+                return true;
+            }
+
+            EditorBeatmap.PerformOnSelection(h =>
+            {
+                if (!(h is CatchHitObject catchObject)) return;
+
+                catchObject.OriginalX += deltaX;
+
+                // Move the nested hit objects to give an instant result before nested objects are recreated.
+                foreach (var nested in catchObject.NestedHitObjects.OfType<CatchHitObject>())
+                    nested.OriginalX += deltaX;
+            });
+
+            return true;
+        }
+
+        public override bool HandleFlip(Direction direction)
+        {
+            var selectionRange = CatchHitObjectUtils.GetPositionRange(SelectedItems);
+
+            bool changed = false;
+            EditorBeatmap.PerformOnSelection(h =>
+            {
+                if (h is CatchHitObject catchObject)
+                    changed |= handleFlip(selectionRange, catchObject);
+            });
+            return changed;
+        }
+
+        public override bool HandleReverse()
+        {
+            double selectionStartTime = SelectedItems.Min(h => h.StartTime);
+            double selectionEndTime = SelectedItems.Max(h => h.GetEndTime());
+
+            EditorBeatmap.PerformOnSelection(hitObject =>
+            {
+                hitObject.StartTime = selectionEndTime - (hitObject.GetEndTime() - selectionStartTime);
+
+                if (hitObject is JuiceStream juiceStream)
+                {
+                    juiceStream.Path.Reverse(out Vector2 positionalOffset);
+                    juiceStream.OriginalX += positionalOffset.X;
+                    juiceStream.LegacyConvertedY += positionalOffset.Y;
+                    EditorBeatmap.Update(juiceStream);
+                }
+            });
+            return true;
+        }
+
+        protected override void OnSelectionChanged()
+        {
+            base.OnSelectionChanged();
+
+            var selectionRange = CatchHitObjectUtils.GetPositionRange(SelectedItems);
+            SelectionBox.CanFlipX = selectionRange.Length > 0 && SelectedItems.Any(h => h is CatchHitObject && !(h is BananaShower));
+            SelectionBox.CanReverse = SelectedItems.Count > 1 || SelectedItems.Any(h => h is JuiceStream);
+        }
+
+        /// <summary>
+        /// Limit positional movement of the objects by the constraint that moved objects should stay in bounds.
+        /// </summary>
+        /// <param name="deltaX">The positional movement.</param>
+        /// <param name="movingObjects">The objects to be moved.</param>
+        /// <returns>The positional movement with the restriction applied.</returns>
+        private float limitMovement(float deltaX, IEnumerable<HitObject> movingObjects)
+        {
+            var range = CatchHitObjectUtils.GetPositionRange(movingObjects);
+            // To make an object with position `x` stay in bounds after `deltaX` movement, `0 <= x + deltaX <= WIDTH` should be satisfied.
+            // Subtracting `x`, we get `-x <= deltaX <= WIDTH - x`.
+            // We only need to apply the inequality to extreme values of `x`.
+            float lowerBound = -range.Min;
+            float upperBound = CatchPlayfield.WIDTH - range.Max;
+            // The inequality may be unsatisfiable if the objects were already out of bounds.
+            // In that case, don't move objects at all.
+            if (lowerBound > upperBound)
+                return 0;
+
+            return Math.Clamp(deltaX, lowerBound, upperBound);
+        }
+
+        private bool handleFlip(PositionRange selectionRange, CatchHitObject hitObject)
+        {
+            switch (hitObject)
+            {
+                case BananaShower _:
+                    return false;
+
+                case JuiceStream juiceStream:
+                    juiceStream.OriginalX = selectionRange.GetFlippedPosition(juiceStream.OriginalX);
+
+                    foreach (var point in juiceStream.Path.ControlPoints)
+                        point.Position.Value *= new Vector2(-1, 1);
+
+                    EditorBeatmap.Update(juiceStream);
+                    return true;
+
+                default:
+                    hitObject.OriginalX = selectionRange.GetFlippedPosition(hitObject.OriginalX);
+                    return true;
+            }
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/DrawableCatchEditorRuleset.cs
+++ b/osu.Game.Rulesets.Catch/Edit/DrawableCatchEditorRuleset.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 System.Collections.Generic;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.UI;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class DrawableCatchEditorRuleset : DrawableCatchRuleset
+    {
+        public DrawableCatchEditorRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod> mods = null)
+            : base(ruleset, beatmap, mods)
+        {
+        }
+
+        protected override Playfield CreatePlayfield() => new CatchEditorPlayfield(Beatmap.BeatmapInfo.BaseDifficulty);
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/FruitCompositionTool.cs
+++ b/osu.Game.Rulesets.Catch/Edit/FruitCompositionTool.cs
@ -0,0 +1,24 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class FruitCompositionTool : HitObjectCompositionTool
+    {
+        public FruitCompositionTool()
+            : base(nameof(Fruit))
+        {
+        }
+
+        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Circles);
+
+        public override PlacementBlueprint CreatePlacementBlueprint() => new FruitPlacementBlueprint();
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/JuiceStreamCompositionTool.cs
+++ b/osu.Game.Rulesets.Catch/Edit/JuiceStreamCompositionTool.cs
@ -0,0 +1,24 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Graphics;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Edit.Blueprints;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Edit;
+using osu.Game.Rulesets.Edit.Tools;
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    public class JuiceStreamCompositionTool : HitObjectCompositionTool
+    {
+        public JuiceStreamCompositionTool()
+            : base(nameof(JuiceStream))
+        {
+        }
+
+        public override Drawable CreateIcon() => new BeatmapStatisticIcon(BeatmapStatisticsIconType.Sliders);
+
+        public override PlacementBlueprint CreatePlacementBlueprint() => new JuiceStreamPlacementBlueprint();
+    }
+}
--- a/osu.Game.Rulesets.Catch/Edit/PositionRange.cs
+++ b/osu.Game.Rulesets.Catch/Edit/PositionRange.cs
@ -0,0 +1,42 @@
+// 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;
+
+#nullable enable
+
+namespace osu.Game.Rulesets.Catch.Edit
+{
+    /// <summary>
+    /// Represents either the empty range or a closed interval of horizontal positions in the playfield.
+    /// A <see cref="PositionRange"/> represents a closed interval if it is <see cref="Min"/> &lt;= <see cref="Max"/>, and represents the empty range otherwise.
+    /// </summary>
+    public readonly struct PositionRange
+    {
+        public readonly float Min;
+        public readonly float Max;
+
+        public float Length => Math.Max(0, Max - Min);
+
+        public PositionRange(float value)
+            : this(value, value)
+        {
+        }
+
+        public PositionRange(float min, float max)
+        {
+            Min = min;
+            Max = max;
+        }
+
+        public static PositionRange Union(PositionRange a, PositionRange b) => new PositionRange(Math.Min(a.Min, b.Min), Math.Max(a.Max, b.Max));
+
+        /// <summary>
+        /// Get the given position flipped (mirrored) for the axis at the center of this range.
+        /// Returns the given position unchanged if the range was empty.
+        /// </summary>
+        public float GetFlippedPosition(float x) => Min <= Max ? Max - (x - Min) : x;
+
+        public static readonly PositionRange EMPTY = new PositionRange(float.PositiveInfinity, float.NegativeInfinity);
+    }
+}
--- a/osu.Game.Rulesets.Catch/Mods/CatchModDifficultyAdjust.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModDifficultyAdjust.cs
@ -5,39 +5,35 @@ using System.Linq;
 using osu.Framework.Bindables;
 using osu.Game.Beatmaps;
 using osu.Game.Configuration;
+using osu.Game.Rulesets.Catch.Beatmaps;
 using osu.Game.Rulesets.Mods;

 namespace osu.Game.Rulesets.Catch.Mods
 {
-    public class CatchModDifficultyAdjust : ModDifficultyAdjust
+    public class CatchModDifficultyAdjust : ModDifficultyAdjust, IApplicableToBeatmapProcessor
    {
-        [SettingSource("Circle Size", "Override a beatmap's set CS.", FIRST_SETTING_ORDER - 1)]
-        public BindableNumber<float> CircleSize { get; } = new BindableFloatWithLimitExtension
+        [SettingSource("Circle Size", "Override a beatmap's set CS.", FIRST_SETTING_ORDER - 1, SettingControlType = typeof(DifficultyAdjustSettingsControl))]
+        public DifficultyBindable CircleSize { get; } = new DifficultyBindable
        {
            Precision = 0.1f,
            MinValue = 1,
            MaxValue = 10,
-            Default = 5,
-            Value = 5,
+            ExtendedMaxValue = 11,
+            ReadCurrentFromDifficulty = diff => diff.CircleSize,
        };

-        [SettingSource("Approach Rate", "Override a beatmap's set AR.", LAST_SETTING_ORDER + 1)]
-        public BindableNumber<float> ApproachRate { get; } = new BindableFloatWithLimitExtension
+        [SettingSource("Approach Rate", "Override a beatmap's set AR.", LAST_SETTING_ORDER + 1, SettingControlType = typeof(DifficultyAdjustSettingsControl))]
+        public DifficultyBindable ApproachRate { get; } = new DifficultyBindable
        {
            Precision = 0.1f,
            MinValue = 1,
            MaxValue = 10,
-            Default = 5,
-            Value = 5,
+            ExtendedMaxValue = 11,
+            ReadCurrentFromDifficulty = diff => diff.ApproachRate,
        };

-        protected override void ApplyLimits(bool extended)
-        {
-            base.ApplyLimits(extended);
-
-            CircleSize.MaxValue = extended ? 11 : 10;
-            ApproachRate.MaxValue = extended ? 11 : 10;
-        }
+        [SettingSource("Spicy Patterns", "Adjust the patterns as if Hard Rock is enabled.")]
+        public BindableBool HardRockOffsets { get; } = new BindableBool();

        public override string SettingDescription
        {
@ -45,30 +41,30 @@ namespace osu.Game.Rulesets.Catch.Mods
            {
                string circleSize = CircleSize.IsDefault ? string.Empty : $"CS {CircleSize.Value:N1}";
                string approachRate = ApproachRate.IsDefault ? string.Empty : $"AR {ApproachRate.Value:N1}";
+                string spicyPatterns = HardRockOffsets.IsDefault ? string.Empty : "Spicy patterns";

                return string.Join(", ", new[]
                {
                    circleSize,
                    base.SettingDescription,
-                    approachRate
+                    approachRate,
+                    spicyPatterns,
                }.Where(s => !string.IsNullOrEmpty(s)));
            }
        }

-        protected override void TransferSettings(BeatmapDifficulty difficulty)
-        {
-            base.TransferSettings(difficulty);
-
-            TransferSetting(CircleSize, difficulty.CircleSize);
-            TransferSetting(ApproachRate, difficulty.ApproachRate);
-        }
-
        protected override void ApplySettings(BeatmapDifficulty difficulty)
        {
            base.ApplySettings(difficulty);

-            ApplySetting(CircleSize, cs => difficulty.CircleSize = cs);
-            ApplySetting(ApproachRate, ar => difficulty.ApproachRate = ar);
+            if (CircleSize.Value != null) difficulty.CircleSize = CircleSize.Value.Value;
+            if (ApproachRate.Value != null) difficulty.ApproachRate = ApproachRate.Value.Value;
+        }
+
+        public void ApplyToBeatmapProcessor(IBeatmapProcessor beatmapProcessor)
+        {
+            var catchProcessor = (CatchBeatmapProcessor)beatmapProcessor;
+            catchProcessor.HardRockOffsets = HardRockOffsets.Value;
        }
    }
 }
--- a/osu.Game.Rulesets.Catch/Mods/CatchModFlashlight.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModFlashlight.cs
@ -41,9 +41,7 @@ namespace osu.Game.Rulesets.Catch.Mods
            {
                base.Update();

-                var catcherArea = playfield.CatcherArea;
-
-                FlashlightPosition = catcherArea.ToSpaceOfOtherDrawable(catcherArea.MovableCatcher.DrawPosition, this);
+                FlashlightPosition = playfield.CatcherArea.ToSpaceOfOtherDrawable(playfield.Catcher.DrawPosition, this);
            }

            private float getSizeFor(int combo)
--- a/osu.Game.Rulesets.Catch/Mods/CatchModHardRock.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModHardRock.cs
@ -7,11 +7,14 @@ using osu.Game.Rulesets.Catch.Beatmaps;

 namespace osu.Game.Rulesets.Catch.Mods
 {
-    public class CatchModHardRock : ModHardRock, IApplicableToBeatmap
+    public class CatchModHardRock : ModHardRock, IApplicableToBeatmapProcessor
    {
        public override double ScoreMultiplier => 1.12;
-        public override bool Ranked => true;

-        public void ApplyToBeatmap(IBeatmap beatmap) => CatchBeatmapProcessor.ApplyPositionOffsets(beatmap, this);
+        public void ApplyToBeatmapProcessor(IBeatmapProcessor beatmapProcessor)
+        {
+            var catchProcessor = (CatchBeatmapProcessor)beatmapProcessor;
+            catchProcessor.HardRockOffsets = true;
+        }
    }
 }
--- a/osu.Game.Rulesets.Catch/Mods/CatchModHidden.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModHidden.cs
@ -25,7 +25,7 @@ namespace osu.Game.Rulesets.Catch.Mods
            var drawableCatchRuleset = (DrawableCatchRuleset)drawableRuleset;
            var catchPlayfield = (CatchPlayfield)drawableCatchRuleset.Playfield;

-            catchPlayfield.CatcherArea.MovableCatcher.CatchFruitOnPlate = false;
+            catchPlayfield.Catcher.CatchFruitOnPlate = false;
        }

        protected override void ApplyIncreasedVisibilityState(DrawableHitObject hitObject, ArmedState state)
--- a/osu.Game.Rulesets.Catch/Mods/CatchModMirror.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModMirror.cs
@ -0,0 +1,87 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Linq;
+using osu.Game.Beatmaps;
+using osu.Game.Rulesets.Catch.Beatmaps;
+using osu.Game.Rulesets.Catch.Objects;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Rulesets.Objects;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Mods
+{
+    public class CatchModMirror : ModMirror, IApplicableToBeatmap
+    {
+        public override string Description => "Fruits are flipped horizontally.";
+
+        /// <remarks>
+        /// <see cref="IApplicableToBeatmap"/> is used instead of <see cref="IApplicableToHitObject"/>,
+        /// as <see cref="CatchBeatmapProcessor"/> applies offsets in <see cref="CatchBeatmapProcessor.PostProcess"/>.
+        /// <see cref="IApplicableToBeatmap"/> runs after post-processing, while <see cref="IApplicableToHitObject"/> runs before it.
+        /// </remarks>
+        public void ApplyToBeatmap(IBeatmap beatmap)
+        {
+            foreach (var hitObject in beatmap.HitObjects)
+                applyToHitObject(hitObject);
+        }
+
+        private void applyToHitObject(HitObject hitObject)
+        {
+            var catchObject = (CatchHitObject)hitObject;
+
+            switch (catchObject)
+            {
+                case Fruit fruit:
+                    mirrorEffectiveX(fruit);
+                    break;
+
+                case JuiceStream juiceStream:
+                    mirrorEffectiveX(juiceStream);
+                    mirrorJuiceStreamPath(juiceStream);
+                    break;
+
+                case BananaShower bananaShower:
+                    mirrorBananaShower(bananaShower);
+                    break;
+            }
+        }
+
+        /// <summary>
+        /// Mirrors the effective X position of <paramref name="catchObject"/> and its nested hit objects.
+        /// </summary>
+        private static void mirrorEffectiveX(CatchHitObject catchObject)
+        {
+            catchObject.OriginalX = CatchPlayfield.WIDTH - catchObject.OriginalX;
+            catchObject.XOffset = -catchObject.XOffset;
+
+            foreach (var nested in catchObject.NestedHitObjects.Cast<CatchHitObject>())
+            {
+                nested.OriginalX = CatchPlayfield.WIDTH - nested.OriginalX;
+                nested.XOffset = -nested.XOffset;
+            }
+        }
+
+        /// <summary>
+        /// Mirrors the path of the <paramref name="juiceStream"/>.
+        /// </summary>
+        private static void mirrorJuiceStreamPath(JuiceStream juiceStream)
+        {
+            var controlPoints = juiceStream.Path.ControlPoints.Select(p => new PathControlPoint(p.Position.Value, p.Type.Value)).ToArray();
+            foreach (var point in controlPoints)
+                point.Position.Value = new Vector2(-point.Position.Value.X, point.Position.Value.Y);
+
+            juiceStream.Path = new SliderPath(controlPoints, juiceStream.Path.ExpectedDistance.Value);
+        }
+
+        /// <summary>
+        /// Mirrors X positions of all bananas in the <paramref name="bananaShower"/>.
+        /// </summary>
+        private static void mirrorBananaShower(BananaShower bananaShower)
+        {
+            foreach (var banana in bananaShower.NestedHitObjects.OfType<Banana>())
+                banana.XOffset = CatchPlayfield.WIDTH - banana.XOffset;
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Mods/CatchModMuted.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModMuted.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.Catch.Objects;
+using osu.Game.Rulesets.Mods;
+
+namespace osu.Game.Rulesets.Catch.Mods
+{
+    public class CatchModMuted : ModMuted<CatchHitObject>
+    {
+    }
+}
--- a/osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs
+++ b/osu.Game.Rulesets.Catch/Mods/CatchModRelax.cs
@ -33,13 +33,13 @@ namespace osu.Game.Rulesets.Catch.Mods

        private class MouseInputHelper : Drawable, IKeyBindingHandler<CatchAction>, IRequireHighFrequencyMousePosition
        {
-            private readonly Catcher catcher;
+            private readonly CatcherArea catcherArea;

            public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;

            public MouseInputHelper(CatchPlayfield playfield)
            {
-                catcher = playfield.CatcherArea.MovableCatcher;
+                catcherArea = playfield.CatcherArea;
                RelativeSizeAxes = Axes.Both;
            }

@ -52,7 +52,7 @@ namespace osu.Game.Rulesets.Catch.Mods

            protected override bool OnMouseMove(MouseMoveEvent e)
            {
-                catcher.UpdatePosition(e.MousePosition.X / DrawSize.X * CatchPlayfield.WIDTH);
+                catcherArea.SetCatcherPosition(e.MousePosition.X / DrawSize.X * CatchPlayfield.WIDTH);
                return base.OnMouseMove(e);
            }
        }
--- a/osu.Game.Rulesets.Catch/Objects/Banana.cs
+++ b/osu.Game.Rulesets.Catch/Objects/Banana.cs
@ -9,6 +9,7 @@ using osu.Game.Audio;
 using osu.Game.Rulesets.Catch.Judgements;
 using osu.Game.Rulesets.Judgements;
 using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Skinning;
 using osu.Game.Utils;
 using osuTK.Graphics;

@ -31,7 +32,7 @@ namespace osu.Game.Rulesets.Catch.Objects
        }

        // override any external colour changes with banananana
-        Color4 IHasComboInformation.GetComboColour(IReadOnlyList<Color4> comboColours) => getBananaColour();
+        Color4 IHasComboInformation.GetComboColour(ISkin skin) => getBananaColour();

        private Color4 getBananaColour()
        {
--- a/osu.Game.Rulesets.Catch/Objects/CatchHitObject.cs
+++ b/osu.Game.Rulesets.Catch/Objects/CatchHitObject.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 Newtonsoft.Json;
 using osu.Framework.Bindables;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@ -8,10 +9,11 @@ using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Types;
 using osu.Game.Rulesets.Scoring;
+using osuTK;

 namespace osu.Game.Rulesets.Catch.Objects
 {
-    public abstract class CatchHitObject : HitObject, IHasXPosition, IHasComboInformation
+    public abstract class CatchHitObject : HitObject, IHasPosition, IHasComboInformation
    {
        public const float OBJECT_RADIUS = 64;

@ -20,13 +22,16 @@ namespace osu.Game.Rulesets.Catch.Objects
        /// <summary>
        /// The horizontal position of the hit object between 0 and <see cref="CatchPlayfield.WIDTH"/>.
        /// </summary>
+        /// <remarks>
+        /// Only setter is exposed.
+        /// Use <see cref="OriginalX"/> or <see cref="EffectiveX"/> to get the horizontal position.
+        /// </remarks>
+        [JsonIgnore]
        public float X
        {
            set => OriginalXBindable.Value = value;
        }

-        float IHasXPosition.X => OriginalXBindable.Value;
-
        public readonly Bindable<float> XOffsetBindable = new Bindable<float>();

        /// <summary>
@ -34,6 +39,7 @@ namespace osu.Game.Rulesets.Catch.Objects
        /// </summary>
        public float XOffset
        {
+            get => XOffsetBindable.Value;
            set => XOffsetBindable.Value = value;
        }

@ -44,7 +50,11 @@ namespace osu.Game.Rulesets.Catch.Objects
        /// This value is the original <see cref="X"/> value specified in the beatmap, not affected by the beatmap processing.
        /// Use <see cref="EffectiveX"/> for a gameplay.
        /// </remarks>
-        public float OriginalX => OriginalXBindable.Value;
+        public float OriginalX
+        {
+            get => OriginalXBindable.Value;
+            set => OriginalXBindable.Value = value;
+        }

        /// <summary>
        /// The effective horizontal position of the hit object between 0 and <see cref="CatchPlayfield.WIDTH"/>.
@ -53,9 +63,9 @@ namespace osu.Game.Rulesets.Catch.Objects
        /// This value is the original <see cref="X"/> value plus the offset applied by the beatmap processing.
        /// Use <see cref="OriginalX"/> if a value not affected by the offset is desired.
        /// </remarks>
-        public float EffectiveX => OriginalXBindable.Value + XOffsetBindable.Value;
+        public float EffectiveX => OriginalX + XOffset;

-        public double TimePreempt = 1000;
+        public double TimePreempt { get; set; } = 1000;

        public readonly Bindable<int> IndexInBeatmapBindable = new Bindable<int>();

@ -85,6 +95,14 @@ namespace osu.Game.Rulesets.Catch.Objects
            set => ComboIndexBindable.Value = value;
        }

+        public Bindable<int> ComboIndexWithOffsetsBindable { get; } = new Bindable<int>();
+
+        public int ComboIndexWithOffsets
+        {
+            get => ComboIndexWithOffsetsBindable.Value;
+            set => ComboIndexWithOffsetsBindable.Value = value;
+        }
+
        public Bindable<bool> LastInComboBindable { get; } = new Bindable<bool>();

        /// <summary>
@ -120,5 +138,24 @@ namespace osu.Game.Rulesets.Catch.Objects
        }

        protected override HitWindows CreateHitWindows() => HitWindows.Empty;
+
+        #region Hit object conversion
+
+        // The half of the height of the osu! playfield.
+        public const float DEFAULT_LEGACY_CONVERT_Y = 192;
+
+        /// <summary>
+        /// The Y position of the hit object is not used in the normal osu!catch gameplay.
+        /// It is preserved to maximize the backward compatibility with the legacy editor, in which the mappers use the Y position to organize the patterns.
+        /// </summary>
+        public float LegacyConvertedY { get; set; } = DEFAULT_LEGACY_CONVERT_Y;
+
+        float IHasXPosition.X => OriginalX;
+
+        float IHasYPosition.Y => LegacyConvertedY;
+
+        Vector2 IHasPosition.Position => new Vector2(OriginalX, LegacyConvertedY);
+
+        #endregion
    }
 }
--- a/osu.Game.Rulesets.Catch/Objects/JuiceStream.cs
+++ b/osu.Game.Rulesets.Catch/Objects/JuiceStream.cs
@ -5,6 +5,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using Newtonsoft.Json;
 using osu.Game.Audio;
 using osu.Game.Beatmaps;
 using osu.Game.Beatmaps.ControlPoints;
@ -25,7 +26,10 @@ namespace osu.Game.Rulesets.Catch.Objects

        public int RepeatCount { get; set; }

+        [JsonIgnore]
        public double Velocity { get; private set; }
+
+        [JsonIgnore]
        public double TickDistance { get; private set; }

        /// <summary>
@ -113,6 +117,7 @@ namespace osu.Game.Rulesets.Catch.Objects

        public float EndX => OriginalX + this.CurvePositionAt(1).X;

+        [JsonIgnore]
        public double Duration
        {
            get => this.SpanCount() * Path.Distance / Velocity;
--- a/osu.Game.Rulesets.Catch/Objects/JuiceStreamPath.cs
+++ b/osu.Game.Rulesets.Catch/Objects/JuiceStreamPath.cs
@ -0,0 +1,340 @@
+// 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.Utils;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+using osuTK;
+
+#nullable enable
+
+namespace osu.Game.Rulesets.Catch.Objects
+{
+    /// <summary>
+    /// Represents the path of a juice stream.
+    /// <para>
+    /// A <see cref="JuiceStream"/> holds a legacy <see cref="SliderPath"/> as the representation of the path.
+    /// However, the <see cref="SliderPath"/> representation is difficult to work with.
+    /// This <see cref="JuiceStreamPath"/> represents the path in a more convenient way, a polyline connecting list of <see cref="JuiceStreamPathVertex"/>s.
+    /// </para>
+    /// <para>
+    /// The path can be regarded as a function from the closed interval <c>[Vertices[0].Distance, Vertices[^1].Distance]</c> to the x position, given by <see cref="PositionAtDistance"/>.
+    /// To ensure the path is convertible to a <see cref="SliderPath"/>, the slope of the function must not be more than <c>1</c> everywhere,
+    /// and this slope condition is always maintained as an invariant.
+    /// </para>
+    /// </summary>
+    public class JuiceStreamPath
+    {
+        /// <summary>
+        /// The height of legacy osu!standard playfield.
+        /// The sliders converted by <see cref="ConvertToSliderPath"/> are vertically contained in this height.
+        /// </summary>
+        internal const float OSU_PLAYFIELD_HEIGHT = 384;
+
+        /// <summary>
+        /// The list of vertices of the path, which is represented as a polyline connecting the vertices.
+        /// </summary>
+        public IReadOnlyList<JuiceStreamPathVertex> Vertices => vertices;
+
+        /// <summary>
+        /// The current version number.
+        /// This starts from <c>1</c> and incremented whenever this <see cref="JuiceStreamPath"/> is modified.
+        /// </summary>
+        public int InvalidationID { get; private set; } = 1;
+
+        /// <summary>
+        /// The difference between first vertex's <see cref="JuiceStreamPathVertex.Distance"/> and last vertex's <see cref="JuiceStreamPathVertex.Distance"/>.
+        /// </summary>
+        public double Distance => vertices[^1].Distance - vertices[0].Distance;
+
+        /// <remarks>
+        /// This list should always be non-empty.
+        /// </remarks>
+        private readonly List<JuiceStreamPathVertex> vertices = new List<JuiceStreamPathVertex>
+        {
+            new JuiceStreamPathVertex()
+        };
+
+        /// <summary>
+        /// Compute the x-position of the path at the given <paramref name="distance"/>.
+        /// </summary>
+        /// <remarks>
+        /// When the given distance is outside of the path, the x position at the corresponding endpoint is returned,
+        /// </remarks>
+        public float PositionAtDistance(double distance)
+        {
+            int index = vertexIndexAtDistance(distance);
+            return positionAtDistance(distance, index);
+        }
+
+        /// <summary>
+        /// Remove all vertices of this path, then add a new vertex <c>(0, 0)</c>.
+        /// </summary>
+        public void Clear()
+        {
+            vertices.Clear();
+            vertices.Add(new JuiceStreamPathVertex());
+            invalidate();
+        }
+
+        /// <summary>
+        /// Insert a vertex at given <paramref name="distance"/>.
+        /// The <see cref="PositionAtDistance"/> is used as the position of the new vertex.
+        /// Thus, the set of points of the path is not changed (up to floating-point precision).
+        /// </summary>
+        /// <returns>The index of the new vertex.</returns>
+        public int InsertVertex(double distance)
+        {
+            if (!double.IsFinite(distance))
+                throw new ArgumentOutOfRangeException(nameof(distance));
+
+            int index = vertexIndexAtDistance(distance);
+            float x = positionAtDistance(distance, index);
+            vertices.Insert(index, new JuiceStreamPathVertex(distance, x));
+
+            invalidate();
+            return index;
+        }
+
+        /// <summary>
+        /// Move the vertex of given <paramref name="index"/> to the given position <paramref name="newX"/>.
+        /// When the distances between vertices are too small for the new vertex positions, the adjacent vertices are moved towards <paramref name="newX"/>.
+        /// </summary>
+        public void SetVertexPosition(int index, float newX)
+        {
+            if (index < 0 || index >= vertices.Count)
+                throw new ArgumentOutOfRangeException(nameof(index));
+
+            if (!float.IsFinite(newX))
+                throw new ArgumentOutOfRangeException(nameof(newX));
+
+            var newVertex = new JuiceStreamPathVertex(vertices[index].Distance, newX);
+
+            for (int i = index - 1; i >= 0 && !canConnect(vertices[i], newVertex); i--)
+            {
+                float clampedX = clampToConnectablePosition(newVertex, vertices[i]);
+                vertices[i] = new JuiceStreamPathVertex(vertices[i].Distance, clampedX);
+            }
+
+            for (int i = index + 1; i < vertices.Count; i++)
+            {
+                float clampedX = clampToConnectablePosition(newVertex, vertices[i]);
+                vertices[i] = new JuiceStreamPathVertex(vertices[i].Distance, clampedX);
+            }
+
+            vertices[index] = newVertex;
+
+            invalidate();
+        }
+
+        /// <summary>
+        /// Add a new vertex at given <paramref name="distance"/> and position.
+        /// Adjacent vertices are moved when necessary in the same way as <see cref="SetVertexPosition"/>.
+        /// </summary>
+        public void Add(double distance, float x)
+        {
+            int index = InsertVertex(distance);
+            SetVertexPosition(index, x);
+        }
+
+        /// <summary>
+        /// Remove all vertices that satisfy the given <paramref name="predicate"/>.
+        /// </summary>
+        /// <remarks>
+        /// If all vertices are removed, a new vertex <c>(0, 0)</c> is added.
+        /// </remarks>
+        /// <param name="predicate">The predicate to determine whether a vertex should be removed given the vertex and its index in the path.</param>
+        /// <returns>The number of removed vertices.</returns>
+        public int RemoveVertices(Func<JuiceStreamPathVertex, int, bool> predicate)
+        {
+            int index = 0;
+            int removeCount = vertices.RemoveAll(vertex => predicate(vertex, index++));
+
+            if (vertices.Count == 0)
+                vertices.Add(new JuiceStreamPathVertex());
+
+            if (removeCount != 0)
+                invalidate();
+
+            return removeCount;
+        }
+
+        /// <summary>
+        /// Recreate this path by using difference set of vertices at given distances.
+        /// In addition to the given <paramref name="sampleDistances"/>, the first vertex and the last vertex are always added to the new path.
+        /// New vertices use the positions on the original path. Thus, <see cref="PositionAtDistance"/>s at <paramref name="sampleDistances"/> are preserved.
+        /// </summary>
+        public void ResampleVertices(IEnumerable<double> sampleDistances)
+        {
+            var sampledVertices = new List<JuiceStreamPathVertex>();
+
+            foreach (double distance in sampleDistances)
+            {
+                if (!double.IsFinite(distance))
+                    throw new ArgumentOutOfRangeException(nameof(sampleDistances));
+
+                double clampedDistance = Math.Clamp(distance, vertices[0].Distance, vertices[^1].Distance);
+                float x = PositionAtDistance(clampedDistance);
+                sampledVertices.Add(new JuiceStreamPathVertex(clampedDistance, x));
+            }
+
+            sampledVertices.Sort();
+
+            // The first vertex and the last vertex are always used in the result.
+            vertices.RemoveRange(1, vertices.Count - (vertices.Count == 1 ? 1 : 2));
+            vertices.InsertRange(1, sampledVertices);
+
+            invalidate();
+        }
+
+        /// <summary>
+        /// Convert a <see cref="SliderPath"/> to list of vertices and write the result to this <see cref="JuiceStreamPath"/>.
+        /// </summary>
+        /// <remarks>
+        /// Duplicated vertices are automatically removed.
+        /// </remarks>
+        public void ConvertFromSliderPath(SliderPath sliderPath)
+        {
+            var sliderPathVertices = new List<Vector2>();
+            sliderPath.GetPathToProgress(sliderPathVertices, 0, 1);
+
+            double distance = 0;
+
+            vertices.Clear();
+            vertices.Add(new JuiceStreamPathVertex(0, sliderPathVertices.FirstOrDefault().X));
+
+            for (int i = 1; i < sliderPathVertices.Count; i++)
+            {
+                distance += Vector2.Distance(sliderPathVertices[i - 1], sliderPathVertices[i]);
+
+                if (!Precision.AlmostEquals(vertices[^1].Distance, distance))
+                    vertices.Add(new JuiceStreamPathVertex(distance, sliderPathVertices[i].X));
+            }
+
+            invalidate();
+        }
+
+        /// <summary>
+        /// Convert the path of this <see cref="JuiceStreamPath"/> to a <see cref="SliderPath"/> and write the result to <paramref name="sliderPath"/>.
+        /// The resulting slider is "folded" to make it vertically contained in the playfield `(0..<see cref="OSU_PLAYFIELD_HEIGHT"/>)` assuming the slider start position is <paramref name="sliderStartY"/>.
+        /// </summary>
+        public void ConvertToSliderPath(SliderPath sliderPath, float sliderStartY)
+        {
+            const float margin = 1;
+
+            // Note: these two variables and `sliderPath` are modified by the local functions.
+            double currentDistance = 0;
+            Vector2 lastPosition = new Vector2(vertices[0].X, 0);
+
+            sliderPath.ControlPoints.Clear();
+            sliderPath.ControlPoints.Add(new PathControlPoint(lastPosition));
+
+            for (int i = 1; i < vertices.Count; i++)
+            {
+                sliderPath.ControlPoints[^1].Type.Value = PathType.Linear;
+
+                float deltaX = vertices[i].X - lastPosition.X;
+                double length = vertices[i].Distance - currentDistance;
+
+                // Should satisfy `deltaX^2 + deltaY^2 = length^2`.
+                // By invariants, the expression inside the `sqrt` is (almost) non-negative.
+                double deltaY = Math.Sqrt(Math.Max(0, length * length - (double)deltaX * deltaX));
+
+                // When `deltaY` is small, one segment is always enough.
+                // This case is handled separately to prevent divide-by-zero.
+                if (deltaY <= OSU_PLAYFIELD_HEIGHT / 2 - margin)
+                {
+                    float nextX = vertices[i].X;
+                    float nextY = (float)(lastPosition.Y + getYDirection() * deltaY);
+                    addControlPoint(nextX, nextY);
+                    continue;
+                }
+
+                // When `deltaY` is large or when the slider velocity is fast, the segment must be partitioned to subsegments to stay in bounds.
+                for (double currentProgress = 0; currentProgress < deltaY;)
+                {
+                    double nextProgress = Math.Min(currentProgress + getMaxDeltaY(), deltaY);
+                    float nextX = (float)(vertices[i - 1].X + nextProgress / deltaY * deltaX);
+                    float nextY = (float)(lastPosition.Y + getYDirection() * (nextProgress - currentProgress));
+                    addControlPoint(nextX, nextY);
+                    currentProgress = nextProgress;
+                }
+            }
+
+            int getYDirection()
+            {
+                float lastSliderY = sliderStartY + lastPosition.Y;
+                return lastSliderY < OSU_PLAYFIELD_HEIGHT / 2 ? 1 : -1;
+            }
+
+            float getMaxDeltaY()
+            {
+                float lastSliderY = sliderStartY + lastPosition.Y;
+                return Math.Max(lastSliderY, OSU_PLAYFIELD_HEIGHT - lastSliderY) - margin;
+            }
+
+            void addControlPoint(float nextX, float nextY)
+            {
+                Vector2 nextPosition = new Vector2(nextX, nextY);
+                sliderPath.ControlPoints.Add(new PathControlPoint(nextPosition));
+                currentDistance += Vector2.Distance(lastPosition, nextPosition);
+                lastPosition = nextPosition;
+            }
+        }
+
+        /// <summary>
+        /// Find the index at which a new vertex with <paramref name="distance"/> can be inserted.
+        /// </summary>
+        private int vertexIndexAtDistance(double distance)
+        {
+            // The position of `(distance, Infinity)` is uniquely determined because infinite positions are not allowed.
+            int i = vertices.BinarySearch(new JuiceStreamPathVertex(distance, float.PositiveInfinity));
+            return i < 0 ? ~i : i;
+        }
+
+        /// <summary>
+        /// Compute the position at the given <paramref name="distance"/>, assuming <paramref name="index"/> is the vertex index returned by <see cref="vertexIndexAtDistance"/>.
+        /// </summary>
+        private float positionAtDistance(double distance, int index)
+        {
+            if (index <= 0)
+                return vertices[0].X;
+            if (index >= vertices.Count)
+                return vertices[^1].X;
+
+            double length = vertices[index].Distance - vertices[index - 1].Distance;
+            if (Precision.AlmostEquals(length, 0))
+                return vertices[index].X;
+
+            float deltaX = vertices[index].X - vertices[index - 1].X;
+
+            return (float)(vertices[index - 1].X + deltaX * ((distance - vertices[index - 1].Distance) / length));
+        }
+
+        /// <summary>
+        /// Check the two vertices can connected directly while satisfying the slope condition.
+        /// </summary>
+        private bool canConnect(JuiceStreamPathVertex vertex1, JuiceStreamPathVertex vertex2, float allowance = 0)
+        {
+            double xDistance = Math.Abs((double)vertex2.X - vertex1.X);
+            float length = (float)Math.Abs(vertex2.Distance - vertex1.Distance);
+            return xDistance <= length + allowance;
+        }
+
+        /// <summary>
+        /// Move the position of <paramref name="movableVertex"/> towards the position of <paramref name="fixedVertex"/>
+        /// until the vertex pair satisfies the condition <see cref="canConnect"/>.
+        /// </summary>
+        /// <returns>The resulting position of <paramref name="movableVertex"/>.</returns>
+        private float clampToConnectablePosition(JuiceStreamPathVertex fixedVertex, JuiceStreamPathVertex movableVertex)
+        {
+            float length = (float)Math.Abs(movableVertex.Distance - fixedVertex.Distance);
+            return Math.Clamp(movableVertex.X, fixedVertex.X - length, fixedVertex.X + length);
+        }
+
+        private void invalidate() => InvalidationID++;
+    }
+}
--- a/osu.Game.Rulesets.Catch/Objects/JuiceStreamPathVertex.cs
+++ b/osu.Game.Rulesets.Catch/Objects/JuiceStreamPathVertex.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 System;
+
+#nullable enable
+
+namespace osu.Game.Rulesets.Catch.Objects
+{
+    /// <summary>
+    /// A vertex of a <see cref="JuiceStreamPath"/>.
+    /// </summary>
+    public readonly struct JuiceStreamPathVertex : IComparable<JuiceStreamPathVertex>
+    {
+        public readonly double Distance;
+
+        public readonly float X;
+
+        public JuiceStreamPathVertex(double distance, float x)
+        {
+            Distance = distance;
+            X = x;
+        }
+
+        public int CompareTo(JuiceStreamPathVertex other)
+        {
+            int c = Distance.CompareTo(other.Distance);
+            return c != 0 ? c : X.CompareTo(other.X);
+        }
+
+        public override string ToString() => $"({Distance}, {X})";
+    }
+}
--- a/osu.Game.Rulesets.Catch/Objects/PalpableCatchHitObject.cs
+++ b/osu.Game.Rulesets.Catch/Objects/PalpableCatchHitObject.cs
@ -1,9 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.

-using System.Collections.Generic;
+using Newtonsoft.Json;
 using osu.Framework.Bindables;
 using osu.Game.Rulesets.Objects.Types;
+using osu.Game.Skinning;
 using osuTK.Graphics;

 namespace osu.Game.Rulesets.Catch.Objects
@ -33,6 +34,7 @@ namespace osu.Game.Rulesets.Catch.Objects
        /// <summary>
        /// The target fruit if we are to initiate a hyperdash.
        /// </summary>
+        [JsonIgnore]
        public CatchHitObject HyperDashTarget
        {
            get => hyperDashTarget;
@ -43,6 +45,6 @@ namespace osu.Game.Rulesets.Catch.Objects
            }
        }

-        Color4 IHasComboInformation.GetComboColour(IReadOnlyList<Color4> comboColours) => comboColours[(IndexInBeatmap + 1) % comboColours.Count];
+        Color4 IHasComboInformation.GetComboColour(ISkin skin) => IHasComboInformation.GetSkinComboColour(this, skin, IndexInBeatmap + 1);
    }
 }
--- a/osu.Game.Rulesets.Catch/Replays/CatchAutoGenerator.cs
+++ b/osu.Game.Rulesets.Catch/Replays/CatchAutoGenerator.cs
@ -51,7 +51,7 @@ namespace osu.Game.Rulesets.Catch.Replays
                bool impossibleJump = speedRequired > movement_speed * 2;

                // todo: get correct catcher size, based on difficulty CS.
-                const float catcher_width_half = CatcherArea.CATCHER_SIZE * 0.3f * 0.5f;
+                const float catcher_width_half = Catcher.BASE_SIZE * 0.3f * 0.5f;

                if (lastPosition - catcher_width_half < h.EffectiveX && lastPosition + catcher_width_half > h.EffectiveX)
                {
--- a/osu.Game.Rulesets.Catch/Skinning/CatchSkinConfiguration.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/CatchSkinConfiguration.cs
@ -0,0 +1,13 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+namespace osu.Game.Rulesets.Catch.Skinning
+{
+    public enum CatchSkinConfiguration
+    {
+        /// <summary>
+        /// Whether the contents of the catcher plate should be visually flipped when the catcher direction is changed.
+        /// </summary>
+        FlipCatcherPlate
+    }
+}
--- a/osu.Game.Rulesets.Catch/Skinning/Default/DefaultCatcher.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Default/DefaultCatcher.cs
@ -0,0 +1,52 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System.Collections.Generic;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Framework.Graphics.Sprites;
+using osu.Framework.Graphics.Textures;
+using osu.Game.Rulesets.Catch.UI;
+
+namespace osu.Game.Rulesets.Catch.Skinning.Default
+{
+    public class DefaultCatcher : CompositeDrawable
+    {
+        public Bindable<CatcherAnimationState> CurrentState { get; } = new Bindable<CatcherAnimationState>();
+
+        private readonly Sprite sprite;
+
+        private readonly Dictionary<CatcherAnimationState, Texture> textures = new Dictionary<CatcherAnimationState, Texture>();
+
+        public DefaultCatcher()
+        {
+            RelativeSizeAxes = Axes.Both;
+            InternalChild = sprite = new Sprite
+            {
+                Anchor = Anchor.TopCentre,
+                Origin = Anchor.TopCentre,
+                RelativeSizeAxes = Axes.Both,
+                FillMode = FillMode.Fit
+            };
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(TextureStore store, Bindable<CatcherAnimationState> currentState)
+        {
+            CurrentState.BindTo(currentState);
+
+            textures[CatcherAnimationState.Idle] = store.Get(@"Gameplay/catch/fruit-catcher-idle");
+            textures[CatcherAnimationState.Fail] = store.Get(@"Gameplay/catch/fruit-catcher-fail");
+            textures[CatcherAnimationState.Kiai] = store.Get(@"Gameplay/catch/fruit-catcher-kiai");
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            CurrentState.BindValueChanged(state => sprite.Texture = textures[state.NewValue], true);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/CatchLegacySkinTransformer.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/CatchLegacySkinTransformer.cs
@ -17,8 +17,8 @@ namespace osu.Game.Rulesets.Catch.Skinning.Legacy
        /// </summary>
        private bool providesComboCounter => this.HasFont(LegacyFont.Combo);

-        public CatchLegacySkinTransformer(ISkinSource source)
-            : base(source)
+        public CatchLegacySkinTransformer(ISkin skin)
+            : base(skin)
        {
        }

@ -29,7 +29,7 @@ namespace osu.Game.Rulesets.Catch.Skinning.Legacy
                switch (targetComponent.Target)
                {
                    case SkinnableTarget.MainHUDComponents:
-                        var components = Source.GetDrawableComponent(component) as SkinnableTargetComponentsContainer;
+                        var components = base.GetDrawableComponent(component) as SkinnableTargetComponentsContainer;

                        if (providesComboCounter && components != null)
                        {
@ -65,27 +65,31 @@ namespace osu.Game.Rulesets.Catch.Skinning.Legacy

                        return null;

-                    case CatchSkinComponents.CatcherIdle:
-                        return this.GetAnimation("fruit-catcher-idle", true, true, true) ??
-                               this.GetAnimation("fruit-ryuuta", true, true, true);
+                    case CatchSkinComponents.Catcher:
+                        var version = GetConfig<LegacySkinConfiguration.LegacySetting, decimal>(LegacySkinConfiguration.LegacySetting.Version)?.Value ?? 1;

-                    case CatchSkinComponents.CatcherFail:
-                        return this.GetAnimation("fruit-catcher-fail", true, true, true) ??
-                               this.GetAnimation("fruit-ryuuta", true, true, true);
+                        if (version < 2.3m)
+                        {
+                            if (GetTexture(@"fruit-ryuuta") != null ||
+                                GetTexture(@"fruit-ryuuta-0") != null)
+                                return new LegacyCatcherOld();
+                        }

-                    case CatchSkinComponents.CatcherKiai:
-                        return this.GetAnimation("fruit-catcher-kiai", true, true, true) ??
-                               this.GetAnimation("fruit-ryuuta", true, true, true);
+                        if (GetTexture(@"fruit-catcher-idle") != null ||
+                            GetTexture(@"fruit-catcher-idle-0") != null)
+                            return new LegacyCatcherNew();
+
+                        return null;

                    case CatchSkinComponents.CatchComboCounter:
                        if (providesComboCounter)
-                            return new LegacyCatchComboCounter(Source);
+                            return new LegacyCatchComboCounter(Skin);

                        return null;
                }
            }

-            return Source.GetDrawableComponent(component);
+            return base.GetDrawableComponent(component);
        }

        public override IBindable<TValue> GetConfig<TLookup, TValue>(TLookup lookup)
@ -93,15 +97,28 @@ namespace osu.Game.Rulesets.Catch.Skinning.Legacy
            switch (lookup)
            {
                case CatchSkinColour colour:
-                    var result = (Bindable<Color4>)Source.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
+                    var result = (Bindable<Color4>)base.GetConfig<SkinCustomColourLookup, TValue>(new SkinCustomColourLookup(colour));
                    if (result == null)
                        return null;

                    result.Value = LegacyColourCompatibility.DisallowZeroAlpha(result.Value);
                    return (IBindable<TValue>)result;
+
+                case CatchSkinConfiguration config:
+                    switch (config)
+                    {
+                        case CatchSkinConfiguration.FlipCatcherPlate:
+                            // Don't flip catcher plate contents if the catcher is provided by this legacy skin.
+                            if (GetDrawableComponent(new CatchSkinComponent(CatchSkinComponents.Catcher)) != null)
+                                return (IBindable<TValue>)new Bindable<bool>();
+
+                            break;
+                    }
+
+                    break;
            }

-            return Source.GetConfig<TLookup, TValue>(lookup);
+            return base.GetConfig<TLookup, TValue>(lookup);
        }
    }
 }
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcherNew.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcherNew.cs
@ -0,0 +1,69 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using osu.Framework.Allocation;
+using osu.Framework.Bindables;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Animations;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Rulesets.Catch.UI;
+using osu.Game.Skinning;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Skinning.Legacy
+{
+    public class LegacyCatcherNew : CompositeDrawable
+    {
+        [Resolved]
+        private Bindable<CatcherAnimationState> currentState { get; set; }
+
+        private readonly Dictionary<CatcherAnimationState, Drawable> drawables = new Dictionary<CatcherAnimationState, Drawable>();
+
+        private Drawable currentDrawable;
+
+        public LegacyCatcherNew()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            foreach (var state in Enum.GetValues(typeof(CatcherAnimationState)).Cast<CatcherAnimationState>())
+            {
+                AddInternal(drawables[state] = getDrawableFor(state).With(d =>
+                {
+                    d.Anchor = Anchor.TopCentre;
+                    d.Origin = Anchor.TopCentre;
+                    d.RelativeSizeAxes = Axes.Both;
+                    d.Size = Vector2.One;
+                    d.FillMode = FillMode.Fit;
+                    d.Alpha = 0;
+                }));
+            }
+
+            currentDrawable = drawables[CatcherAnimationState.Idle];
+
+            Drawable getDrawableFor(CatcherAnimationState state) =>
+                skin.GetAnimation(@$"fruit-catcher-{state.ToString().ToLowerInvariant()}", true, true, true) ??
+                skin.GetAnimation(@"fruit-catcher-idle", true, true, true);
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            currentState.BindValueChanged(state =>
+            {
+                currentDrawable.Alpha = 0;
+                currentDrawable = drawables[state.NewValue];
+                currentDrawable.Alpha = 1;
+
+                (currentDrawable as IFramedAnimation)?.GotoFrame(0);
+            }, true);
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcherOld.cs
+++ b/osu.Game.Rulesets.Catch/Skinning/Legacy/LegacyCatcherOld.cs
@ -0,0 +1,32 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using osu.Framework.Allocation;
+using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
+using osu.Game.Skinning;
+using osuTK;
+
+namespace osu.Game.Rulesets.Catch.Skinning.Legacy
+{
+    public class LegacyCatcherOld : CompositeDrawable
+    {
+        public LegacyCatcherOld()
+        {
+            RelativeSizeAxes = Axes.Both;
+        }
+
+        [BackgroundDependencyLoader]
+        private void load(ISkinSource skin)
+        {
+            InternalChild = skin.GetAnimation(@"fruit-ryuuta", true, true, true).With(d =>
+            {
+                d.Anchor = Anchor.TopCentre;
+                d.Origin = Anchor.TopCentre;
+                d.RelativeSizeAxes = Axes.Both;
+                d.Size = Vector2.One;
+                d.FillMode = FillMode.Fit;
+            });
+        }
+    }
+}
--- a/osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs
+++ b/osu.Game.Rulesets.Catch/UI/CatchPlayfield.cs
@ -1,10 +1,8 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.

-using System;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
-using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.Objects;
 using osu.Game.Rulesets.Catch.Objects.Drawables;
@ -28,40 +26,47 @@ namespace osu.Game.Rulesets.Catch.UI
        /// </summary>
        public const float CENTER_X = WIDTH / 2;

-        internal readonly CatcherArea CatcherArea;
-
        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) =>
            // only check the X position; handle all vertical space.
            base.ReceivePositionalInputAt(new Vector2(screenSpacePos.X, ScreenSpaceDrawQuad.Centre.Y));

-        public CatchPlayfield(BeatmapDifficulty difficulty, Func<CatchHitObject, DrawableHitObject<CatchHitObject>> createDrawableRepresentation)
+        internal Catcher Catcher { get; private set; }
+
+        internal CatcherArea CatcherArea { get; private set; }
+
+        private readonly BeatmapDifficulty difficulty;
+
+        public CatchPlayfield(BeatmapDifficulty difficulty)
        {
-            var droppedObjectContainer = new Container<CaughtObject>
-            {
-                RelativeSizeAxes = Axes.Both,
-            };
-
-            CatcherArea = new CatcherArea(droppedObjectContainer, difficulty)
-            {
-                Anchor = Anchor.BottomLeft,
-                Origin = Anchor.TopLeft,
-            };
-
-            InternalChildren = new[]
-            {
-                droppedObjectContainer,
-                CatcherArea.MovableCatcher.CreateProxiedContent(),
-                HitObjectContainer.CreateProxy(),
-                // This ordering (`CatcherArea` before `HitObjectContainer`) is important to
-                // make sure the up-to-date catcher position is used for the catcher catching logic of hit objects.
-                CatcherArea,
-                HitObjectContainer,
-            };
+            this.difficulty = difficulty;
        }

        [BackgroundDependencyLoader]
        private void load()
        {
+            var droppedObjectContainer = new DroppedObjectContainer();
+
+            Catcher = new Catcher(droppedObjectContainer, difficulty)
+            {
+                X = CENTER_X
+            };
+
+            AddRangeInternal(new[]
+            {
+                droppedObjectContainer,
+                Catcher.CreateProxiedContent(),
+                HitObjectContainer.CreateProxy(),
+                // This ordering (`CatcherArea` before `HitObjectContainer`) is important to
+                // make sure the up-to-date catcher position is used for the catcher catching logic of hit objects.
+                CatcherArea = new CatcherArea
+                {
+                    Anchor = Anchor.BottomLeft,
+                    Origin = Anchor.TopLeft,
+                    Catcher = Catcher,
+                },
+                HitObjectContainer,
+            });
+
            RegisterPool<Droplet, DrawableDroplet>(50);
            RegisterPool<TinyDroplet, DrawableTinyDroplet>(50);
            RegisterPool<Fruit, DrawableFruit>(100);
@ -84,7 +89,7 @@ namespace osu.Game.Rulesets.Catch.UI
            ((DrawableCatchHitObject)d).CheckPosition = checkIfWeCanCatch;
        }

-        private bool checkIfWeCanCatch(CatchHitObject obj) => CatcherArea.MovableCatcher.CanCatch(obj);
+        private bool checkIfWeCanCatch(CatchHitObject obj) => Catcher.CanCatch(obj);

        private void onNewResult(DrawableHitObject judgedObject, JudgementResult result)
            => CatcherArea.OnNewResult((DrawableCatchHitObject)judgedObject, result);
--- a/Show More
+++ b/Show More