Merge branch 'master' into slider_fix_hd_hotfix

.github/workflows/_diffcalc_processor.yml

@@ -0,0 +1,228 @@
+name: "🔒diffcalc (do not use)"
+
+on:
+  workflow_call:
+    inputs:
+      id:
+        type: string
+      head-sha:
+        type: string
+      pr-url:
+        type: string
+      pr-text:
+        type: string
+      dispatch-inputs:
+        type: string
+    outputs:
+      target:
+        description: The comparison target.
+        value: ${{ jobs.generator.outputs.target }}
+      sheet:
+        description: The comparison spreadsheet.
+        value: ${{ jobs.generator.outputs.sheet }}
+    secrets:
+      DIFFCALC_GOOGLE_CREDENTIALS:
+        required: true
+
+env:
+  GENERATOR_DIR: ${{ github.workspace }}/${{ inputs.id }}
+  GENERATOR_ENV: ${{ github.workspace }}/${{ inputs.id }}/.env
+
+defaults:
+  run:
+    shell: bash -euo pipefail {0}
+
+jobs:
+  generator:
+    name: Run
+    runs-on: self-hosted
+    timeout-minutes: 720
+
+    outputs:
+      target: ${{ steps.run.outputs.target }}
+      sheet: ${{ steps.run.outputs.sheet }}
+
+    steps:
+      - name: Checkout diffcalc-sheet-generator
+        uses: actions/checkout@v4
+        with:
+          path: ${{ inputs.id }}
+          repository: 'smoogipoo/diffcalc-sheet-generator'
+
+      - name: Add base environment
+        env:
+          GOOGLE_CREDS_FILE: ${{ github.workspace }}/${{ inputs.id }}/google-credentials.json
+          VARS_JSON: ${{ (vars != null && toJSON(vars)) || '' }}
+        run: |
+          # Required by diffcalc-sheet-generator
+          cp '${{ env.GENERATOR_DIR }}/.env.sample' "${{ env.GENERATOR_ENV }}"
+
+          # Add Google credentials
+          echo '${{ secrets.DIFFCALC_GOOGLE_CREDENTIALS }}' | base64 -d > "${{ env.GOOGLE_CREDS_FILE }}"
+
+          # Add repository variables
+          echo "${VARS_JSON}" | jq -c '. | to_entries | .[]' | while read -r line; do
+              opt=$(jq -r '.key' <<< ${line})
+              val=$(jq -r '.value' <<< ${line})
+
+              if [[ "${opt}" =~ ^DIFFCALC_ ]]; then
+                optNoPrefix=$(echo "${opt}" | cut -d '_' -f2-)
+                sed -i "s;^${optNoPrefix}=.*$;${optNoPrefix}=${val};" "${{ env.GENERATOR_ENV }}"
+              fi
+          done
+
+      - name: Add HEAD environment
+        run: |
+          sed -i "s;^OSU_A=.*$;OSU_A=${{ inputs.head-sha }};" "${{ env.GENERATOR_ENV }}"
+
+      - name: Add pull-request environment
+        if: ${{ inputs.pr-url != '' }}
+        run: |
+          sed -i "s;^OSU_B=.*$;OSU_B=${{ inputs.pr-url }};" "${{ env.GENERATOR_ENV }}"
+
+      - name: Add comment environment
+        if: ${{ inputs.pr-text != '' }}
+        env:
+          PR_TEXT: ${{ inputs.pr-text }}
+        run: |
+          # Add comment environment
+          echo "${PR_TEXT}" | sed -r 's/\r$//' | { grep -E '^\w+=' || true; } | while read -r line; do
+              opt=$(echo "${line}" | cut -d '=' -f1)
+              sed -i "s;^${opt}=.*$;${line};" "${{ env.GENERATOR_ENV }}"
+          done
+
+      - name: Add dispatch environment
+        if: ${{ inputs.dispatch-inputs != '' }}
+        env:
+          DISPATCH_INPUTS_JSON: ${{ inputs.dispatch-inputs }}
+        run: |
+          function get_input() {
+            echo "${DISPATCH_INPUTS_JSON}" | jq -r ".\"$1\""
+          }
+
+          osu_a=$(get_input 'osu-a')
+          osu_b=$(get_input 'osu-b')
+          ruleset=$(get_input 'ruleset')
+          generators=$(get_input 'generators')
+          difficulty_calculator_a=$(get_input 'difficulty-calculator-a')
+          difficulty_calculator_b=$(get_input 'difficulty-calculator-b')
+          score_processor_a=$(get_input 'score-processor-a')
+          score_processor_b=$(get_input 'score-processor-b')
+          converts=$(get_input 'converts')
+          ranked_only=$(get_input 'ranked-only')
+
+          sed -i "s;^OSU_B=.*$;OSU_B=${osu_b};" "${{ env.GENERATOR_ENV }}"
+          sed -i "s/^RULESET=.*$/RULESET=${ruleset}/" "${{ env.GENERATOR_ENV }}"
+          sed -i "s/^GENERATORS=.*$/GENERATORS=${generators}/" "${{ env.GENERATOR_ENV }}"
+
+          if [[ "${osu_a}" != 'latest' ]]; then
+              sed -i "s;^OSU_A=.*$;OSU_A=${osu_a};" "${{ env.GENERATOR_ENV }}"
+          fi
+
+          if [[ "${difficulty_calculator_a}" != 'latest' ]]; then
+              sed -i "s;^DIFFICULTY_CALCULATOR_A=.*$;DIFFICULTY_CALCULATOR_A=${difficulty_calculator_a};" "${{ env.GENERATOR_ENV }}"
+          fi
+
+          if [[ "${difficulty_calculator_b}" != 'latest' ]]; then
+              sed -i "s;^DIFFICULTY_CALCULATOR_B=.*$;DIFFICULTY_CALCULATOR_B=${difficulty_calculator_b};" "${{ env.GENERATOR_ENV }}"
+          fi
+
+          if [[ "${score_processor_a}" != 'latest' ]]; then
+              sed -i "s;^SCORE_PROCESSOR_A=.*$;SCORE_PROCESSOR_A=${score_processor_a};" "${{ env.GENERATOR_ENV }}"
+          fi
+
+          if [[ "${score_processor_b}" != 'latest' ]]; then
+              sed -i "s;^SCORE_PROCESSOR_B=.*$;SCORE_PROCESSOR_B=${score_processor_b};" "${{ env.GENERATOR_ENV }}"
+          fi
+
+          if [[ "${converts}" == 'true' ]]; then
+              sed -i 's/^NO_CONVERTS=.*$/NO_CONVERTS=0/' "${{ env.GENERATOR_ENV }}"
+          else
+              sed -i 's/^NO_CONVERTS=.*$/NO_CONVERTS=1/' "${{ env.GENERATOR_ENV }}"
+          fi
+
+          if [[ "${ranked_only}" == 'true' ]]; then
+              sed -i 's/^RANKED_ONLY=.*$/RANKED_ONLY=1/' "${{ env.GENERATOR_ENV }}"
+          else
+              sed -i 's/^RANKED_ONLY=.*$/RANKED_ONLY=0/' "${{ env.GENERATOR_ENV }}"
+          fi
+
+      - name: Query latest scores
+        id: query-scores
+        run: |
+          ruleset=$(cat ${{ env.GENERATOR_ENV }} | grep -E '^RULESET=' | cut -d '=' -f2-)
+          performance_data_name=$(curl -s "https://data.ppy.sh/" | grep "performance_${ruleset}_top_1000\b" | tail -1 | awk -F "'" '{print $2}' | sed 's/\.tar\.bz2//g')
+
+          echo "TARGET_DIR=${{ env.GENERATOR_DIR }}/sql/${ruleset}" >> "${GITHUB_OUTPUT}"
+          echo "DATA_NAME=${performance_data_name}" >> "${GITHUB_OUTPUT}"
+          echo "DATA_PKG=${performance_data_name}.tar.bz2" >> "${GITHUB_OUTPUT}"
+
+      - name: Restore score cache
+        id: restore-score-cache
+        uses: maxnowack/local-cache@720e69c948191660a90aa1cf6a42fc4d2dacdf30 # v2
+        with:
+          path: ${{ steps.query-scores.outputs.DATA_PKG }}
+          key: ${{ steps.query-scores.outputs.DATA_NAME }}
+
+      - name: Download scores
+        if: steps.restore-score-cache.outputs.cache-hit != 'true'
+        run: |
+          wget -q -O "${{ steps.query-scores.outputs.DATA_PKG }}" "https://data.ppy.sh/${{ steps.query-scores.outputs.DATA_PKG }}"
+
+      - name: Extract scores
+        run: |
+          tar -I lbzip2 -xf "${{ steps.query-scores.outputs.DATA_PKG }}"
+          rm -r "${{ steps.query-scores.outputs.TARGET_DIR }}"
+          mv "${{ steps.query-scores.outputs.DATA_NAME }}" "${{ steps.query-scores.outputs.TARGET_DIR }}"
+
+      - name: Query latest beatmaps
+        id: query-beatmaps
+        run: |
+          beatmaps_data_name=$(curl -s "https://data.ppy.sh/" | grep "osu_files" | tail -1 | awk -F "'" '{print $2}' | sed 's/\.tar\.bz2//g')
+
+          echo "TARGET_DIR=${{ env.GENERATOR_DIR }}/beatmaps" >> "${GITHUB_OUTPUT}"
+          echo "DATA_NAME=${beatmaps_data_name}" >> "${GITHUB_OUTPUT}"
+          echo "DATA_PKG=${beatmaps_data_name}.tar.bz2" >> "${GITHUB_OUTPUT}"
+
+      - name: Restore beatmap cache
+        id: restore-beatmap-cache
+        uses: maxnowack/local-cache@720e69c948191660a90aa1cf6a42fc4d2dacdf30 # v2
+        with:
+          path: ${{ steps.query-beatmaps.outputs.DATA_PKG }}
+          key: ${{ steps.query-beatmaps.outputs.DATA_NAME }}
+
+      - name: Download beatmap
+        if: steps.restore-beatmap-cache.outputs.cache-hit != 'true'
+        run: |
+          wget -q -O "${{ steps.query-beatmaps.outputs.DATA_PKG }}" "https://data.ppy.sh/${{ steps.query-beatmaps.outputs.DATA_PKG }}"
+
+      - name: Extract beatmap
+        run: |
+          tar -I lbzip2 -xf "${{ steps.query-beatmaps.outputs.DATA_PKG }}"
+          rm -r "${{ steps.query-beatmaps.outputs.TARGET_DIR }}"
+          mv "${{ steps.query-beatmaps.outputs.DATA_NAME }}" "${{ steps.query-beatmaps.outputs.TARGET_DIR }}"
+
+      - name: Run
+        id: run
+        run: |
+          # Add the GitHub token. This needs to be done here because it's unique per-job.
+          sed -i 's/^GH_TOKEN=.*$/GH_TOKEN=${{ github.token }}/' "${{ env.GENERATOR_ENV }}"
+
+          cd "${{ env.GENERATOR_DIR }}"
+
+          docker compose up --build --detach
+          docker compose logs --follow &
+          docker compose wait generator
+
+          link=$(docker compose logs --tail 10 generator | grep 'http' | sed -E 's/^.*(http.*)$/\1/')
+          target=$(cat "${{ env.GENERATOR_ENV }}" | grep -E '^OSU_B=' | cut -d '=' -f2-)
+
+          echo "target=${target}" >> "${GITHUB_OUTPUT}"
+          echo "sheet=${link}" >> "${GITHUB_OUTPUT}"
+
+      - name: Shutdown
+        if: ${{ always() }}
+        run: |
+          cd "${{ env.GENERATOR_DIR }}"
+          docker compose down --volumes
+          rm -rf "${{ env.GENERATOR_DIR }}"

.github/workflows/ci.yml

@@ -88,7 +88,7 @@ jobs:
       # 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@v3
+        uses: actions/upload-artifact@v4
         if: ${{ always() }}
         with:
           name: osu-test-results-${{matrix.os.prettyname}}-${{matrix.threadingMode}}

.github/workflows/diffcalc.yml

@@ -103,26 +103,11 @@ permissions:
 env:
   EXECUTION_ID: execution-${{ github.run_id }}-${{ github.run_number }}-${{ github.run_attempt }}
 
+defaults:
+  run:
+    shell: bash -euo pipefail {0}
+
 jobs:
-  master-environment:
-    name: Save master environment
-    runs-on: ubuntu-latest
-    outputs:
-      HEAD: ${{ steps.get-head.outputs.HEAD }}
-    steps:
-      - name: Checkout osu
-        uses: actions/checkout@v4
-        with:
-          ref: master
-          sparse-checkout: |
-            README.md
-
-      - name: Get HEAD ref
-        id: get-head
-        run: |
-          ref=$(git log -1 --format='%H')
-          echo "HEAD=https://github.com/${{ github.repository }}/commit/${ref}" >> "${GITHUB_OUTPUT}"
-
   check-permissions:
     name: Check permissions
     runs-on: ubuntu-latest
@@ -138,9 +123,23 @@ jobs:
           done
           exit 1
 
+  run-diffcalc:
+    name: Run spreadsheet generator
+    needs: check-permissions
+    uses: ./.github/workflows/_diffcalc_processor.yml
+    with:
+      # Can't reference env... Why GitHub, WHY?
+      id: execution-${{ github.run_id }}-${{ github.run_number }}-${{ github.run_attempt }}
+      head-sha: https://github.com/${{ github.repository }}/commit/${{ github.event.pull_request.head.sha || github.sha }}
+      pr-url: ${{ github.event.issue.pull_request.html_url || '' }}
+      pr-text: ${{ github.event.comment.body || '' }}
+      dispatch-inputs: ${{ (github.event.type == 'workflow_dispatch' && toJSON(inputs)) || '' }}
+    secrets:
+      DIFFCALC_GOOGLE_CREDENTIALS: ${{ secrets.DIFFCALC_GOOGLE_CREDENTIALS }}
+
   create-comment:
     name: Create PR comment
-    needs: [ master-environment, check-permissions ]
+    needs: check-permissions
     runs-on: ubuntu-latest
     if: ${{ github.event_name == 'issue_comment' && github.event.issue.pull_request }}
     steps:
@@ -153,249 +152,34 @@ jobs:
 
             *This comment will update on completion*
 
-  directory:
-    name: Prepare directory
-    needs: check-permissions
-    runs-on: self-hosted
-    outputs:
-      GENERATOR_DIR: ${{ steps.set-outputs.outputs.GENERATOR_DIR }}
-      GENERATOR_ENV: ${{ steps.set-outputs.outputs.GENERATOR_ENV }}
-      GOOGLE_CREDS_FILE: ${{ steps.set-outputs.outputs.GOOGLE_CREDS_FILE }}
-    steps:
-      - name: Checkout diffcalc-sheet-generator
-        uses: actions/checkout@v4
-        with:
-          path: ${{ env.EXECUTION_ID }}
-          repository: 'smoogipoo/diffcalc-sheet-generator'
-
-      - name: Set outputs
-        id: set-outputs
-        run: |
-          echo "GENERATOR_DIR=${{ github.workspace }}/${{ env.EXECUTION_ID }}" >> "${GITHUB_OUTPUT}"
-          echo "GENERATOR_ENV=${{ github.workspace }}/${{ env.EXECUTION_ID }}/.env" >> "${GITHUB_OUTPUT}"
-          echo "GOOGLE_CREDS_FILE=${{ github.workspace }}/${{ env.EXECUTION_ID }}/google-credentials.json" >> "${GITHUB_OUTPUT}"
-
-  environment:
-    name: Setup environment
-    needs: [ master-environment, directory ]
-    runs-on: self-hosted
-    env:
-      VARS_JSON: ${{ toJSON(vars) }}
-    steps:
-      - name: Add base environment
-        run: |
-          # Required by diffcalc-sheet-generator
-          cp '${{ needs.directory.outputs.GENERATOR_DIR }}/.env.sample' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-
-          # Add Google credentials
-          echo '${{ secrets.DIFFCALC_GOOGLE_CREDENTIALS }}' | base64 -d > "${{ needs.directory.outputs.GOOGLE_CREDS_FILE }}"
-
-          # Add repository variables
-          echo "${VARS_JSON}" | jq -c '. | to_entries | .[]' | while read -r line; do
-              opt=$(jq -r '.key' <<< ${line})
-              val=$(jq -r '.value' <<< ${line})
-
-              if [[ "${opt}" =~ ^DIFFCALC_ ]]; then
-                optNoPrefix=$(echo "${opt}" | cut -d '_' -f2-)
-                sed -i "s;^${optNoPrefix}=.*$;${optNoPrefix}=${val};" "${{ needs.directory.outputs.GENERATOR_ENV }}"
-              fi
-          done
-
-      - name: Add master environment
-        run: |
-          sed -i "s;^OSU_A=.*$;OSU_A=${{ needs.master-environment.outputs.HEAD }};" "${{ needs.directory.outputs.GENERATOR_ENV }}"
-
-      - name: Add pull-request environment
-        if: ${{ github.event_name == 'issue_comment' && github.event.issue.pull_request }}
-        run: |
-          sed -i "s;^OSU_B=.*$;OSU_B=${{ github.event.issue.pull_request.html_url }};" "${{ needs.directory.outputs.GENERATOR_ENV }}"
-
-      - name: Add comment environment
-        if: ${{ github.event_name == 'issue_comment' }}
-        env:
-          COMMENT_BODY: ${{ github.event.comment.body }}
-        run: |
-          # Add comment environment
-          echo "$COMMENT_BODY" | sed -r 's/\r$//' | grep -E '^\w+=' | while read -r line; do
-              opt=$(echo "${line}" | cut -d '=' -f1)
-              sed -i "s;^${opt}=.*$;${line};" "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          done
-
-      - name: Add dispatch environment
-        if: ${{ github.event_name == 'workflow_dispatch' }}
-        run: |
-          sed -i 's;^OSU_B=.*$;OSU_B=${{ inputs.osu-b }};' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          sed -i 's/^RULESET=.*$/RULESET=${{ inputs.ruleset }}/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          sed -i 's/^GENERATORS=.*$/GENERATORS=${{ inputs.generators }}/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-
-          if [[ '${{ inputs.osu-a }}' != 'latest' ]]; then
-              sed -i 's;^OSU_A=.*$;OSU_A=${{ inputs.osu-a }};' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-          if [[ '${{ inputs.difficulty-calculator-a }}' != 'latest' ]]; then
-              sed -i 's;^DIFFICULTY_CALCULATOR_A=.*$;DIFFICULTY_CALCULATOR_A=${{ inputs.difficulty-calculator-a }};' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-          if [[ '${{ inputs.difficulty-calculator-b }}' != 'latest' ]]; then
-              sed -i 's;^DIFFICULTY_CALCULATOR_B=.*$;DIFFICULTY_CALCULATOR_B=${{ inputs.difficulty-calculator-b }};' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-          if [[ '${{ inputs.score-processor-a }}' != 'latest' ]]; then
-              sed -i 's;^SCORE_PROCESSOR_A=.*$;SCORE_PROCESSOR_A=${{ inputs.score-processor-a }};' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-          if [[ '${{ inputs.score-processor-b }}' != 'latest' ]]; then
-              sed -i 's;^SCORE_PROCESSOR_B=.*$;SCORE_PROCESSOR_B=${{ inputs.score-processor-b }};' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-          if [[ '${{ inputs.converts }}' == 'true' ]]; then
-              sed -i 's/^NO_CONVERTS=.*$/NO_CONVERTS=0/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          else
-              sed -i 's/^NO_CONVERTS=.*$/NO_CONVERTS=1/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-          if [[ '${{ inputs.ranked-only }}' == 'true' ]]; then
-              sed -i 's/^RANKED_ONLY=.*$/RANKED_ONLY=1/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          else
-              sed -i 's/^RANKED_ONLY=.*$/RANKED_ONLY=0/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-          fi
-
-  scores:
-    name: Setup scores
-    needs: [ directory, environment ]
-    runs-on: self-hosted
-    steps:
-      - name: Query latest data
-        id: query
-        run: |
-          ruleset=$(cat ${{ needs.directory.outputs.GENERATOR_ENV }} | grep -E '^RULESET=' | cut -d '=' -f2-)
-          performance_data_name=$(curl -s "https://data.ppy.sh/" | grep "performance_${ruleset}_top_1000\b" | tail -1 | awk -F "'" '{print $2}' | sed 's/\.tar\.bz2//g')
-
-          echo "TARGET_DIR=${{ needs.directory.outputs.GENERATOR_DIR }}/sql/${ruleset}" >> "${GITHUB_OUTPUT}"
-          echo "DATA_NAME=${performance_data_name}" >> "${GITHUB_OUTPUT}"
-          echo "DATA_PKG=${performance_data_name}.tar.bz2" >> "${GITHUB_OUTPUT}"
-
-      - name: Restore cache
-        id: restore-cache
-        uses: maxnowack/local-cache@720e69c948191660a90aa1cf6a42fc4d2dacdf30 # v2
-        with:
-          path: ${{ steps.query.outputs.DATA_PKG }}
-          key: ${{ steps.query.outputs.DATA_NAME }}
-
-      - name: Download
-        if: steps.restore-cache.outputs.cache-hit != 'true'
-        run: |
-          wget -q -O "${{ steps.query.outputs.DATA_PKG }}" "https://data.ppy.sh/${{ steps.query.outputs.DATA_PKG }}"
-
-      - name: Extract
-        run: |
-          tar -I lbzip2 -xf "${{ steps.query.outputs.DATA_PKG }}"
-          rm -r "${{ steps.query.outputs.TARGET_DIR }}"
-          mv "${{ steps.query.outputs.DATA_NAME }}" "${{ steps.query.outputs.TARGET_DIR }}"
-
-  beatmaps:
-    name: Setup beatmaps
-    needs: directory
-    runs-on: self-hosted
-    steps:
-      - name: Query latest data
-        id: query
-        run: |
-          beatmaps_data_name=$(curl -s "https://data.ppy.sh/" | grep "osu_files" | tail -1 | awk -F "'" '{print $2}' | sed 's/\.tar\.bz2//g')
-
-          echo "TARGET_DIR=${{ needs.directory.outputs.GENERATOR_DIR }}/beatmaps" >> "${GITHUB_OUTPUT}"
-          echo "DATA_NAME=${beatmaps_data_name}" >> "${GITHUB_OUTPUT}"
-          echo "DATA_PKG=${beatmaps_data_name}.tar.bz2" >> "${GITHUB_OUTPUT}"
-
-      - name: Restore cache
-        id: restore-cache
-        uses: maxnowack/local-cache@720e69c948191660a90aa1cf6a42fc4d2dacdf30 # v2
-        with:
-          path: ${{ steps.query.outputs.DATA_PKG }}
-          key: ${{ steps.query.outputs.DATA_NAME }}
-
-      - name: Download
-        if: steps.restore-cache.outputs.cache-hit != 'true'
-        run: |
-          wget -q -O "${{ steps.query.outputs.DATA_PKG }}" "https://data.ppy.sh/${{ steps.query.outputs.DATA_PKG }}"
-
-      - name: Extract
-        run: |
-          tar -I lbzip2 -xf "${{ steps.query.outputs.DATA_PKG }}"
-          rm -r "${{ steps.query.outputs.TARGET_DIR }}"
-          mv "${{ steps.query.outputs.DATA_NAME }}" "${{ steps.query.outputs.TARGET_DIR }}"
-
-  generator:
-    name: Run generator
-    needs: [ directory, environment, scores, beatmaps ]
-    runs-on: self-hosted
-    timeout-minutes: 720
-    outputs:
-      TARGET: ${{ steps.run.outputs.TARGET }}
-      SPREADSHEET_LINK: ${{ steps.run.outputs.SPREADSHEET_LINK }}
-    steps:
-      - name: Run
-        id: run
-        run: |
-          # Add the GitHub token. This needs to be done here because it's unique per-job.
-          sed -i 's/^GH_TOKEN=.*$/GH_TOKEN=${{ github.token }}/' "${{ needs.directory.outputs.GENERATOR_ENV }}"
-
-          cd "${{ needs.directory.outputs.GENERATOR_DIR }}"
-
-          docker compose up --build --detach
-          docker compose logs --follow &
-          docker compose wait generator
-
-          link=$(docker compose logs --tail 10 generator | grep 'http' | sed -E 's/^.*(http.*)$/\1/')
-          target=$(cat "${{ needs.directory.outputs.GENERATOR_ENV }}" | grep -E '^OSU_B=' | cut -d '=' -f2-)
-
-          echo "TARGET=${target}" >> "${GITHUB_OUTPUT}"
-          echo "SPREADSHEET_LINK=${link}" >> "${GITHUB_OUTPUT}"
-
-      - name: Shutdown
-        if: ${{ always() }}
-        run: |
-          cd "${{ needs.directory.outputs.GENERATOR_DIR }}"
-          docker compose down --volumes
-
   output-cli:
-    name: Output info
-    needs: generator
+    name: Info
+    needs: run-diffcalc
     runs-on: ubuntu-latest
     steps:
       - name: Output info
         run: |
-          echo "Target: ${{ needs.generator.outputs.TARGET }}"
-          echo "Spreadsheet: ${{ needs.generator.outputs.SPREADSHEET_LINK }}"
-
-  cleanup:
-    name: Cleanup
-    needs: [ directory, generator ]
-    if: ${{ always() && needs.directory.result == 'success' }}
-    runs-on: self-hosted
-    steps:
-      - name: Cleanup
-        run: |
-          rm -rf "${{ needs.directory.outputs.GENERATOR_DIR }}"
+          echo "Target: ${{ needs.run-diffcalc.outputs.target }}"
+          echo "Spreadsheet: ${{ needs.run-diffcalc.outputs.sheet }}"
 
   update-comment:
     name: Update PR comment
-    needs: [ create-comment, generator ]
+    needs: [ create-comment, run-diffcalc ]
     runs-on: ubuntu-latest
     if: ${{ always() && needs.create-comment.result == 'success' }}
     steps:
       - name: Update comment on success
-        if: ${{ needs.generator.result == 'success' }}
+        if: ${{ needs.run-diffcalc.result == 'success' }}
         uses: thollander/actions-comment-pull-request@fabd468d3a1a0b97feee5f6b9e499eab0dd903f6 # v2.5.0
         with:
           comment_tag: ${{ env.EXECUTION_ID }}
           mode: recreate
           message: |
-            Target: ${{ needs.generator.outputs.TARGET }}
-            Spreadsheet: ${{ needs.generator.outputs.SPREADSHEET_LINK }}
+            Target: ${{ needs.run-diffcalc.outputs.target }}
+            Spreadsheet: ${{ needs.run-diffcalc.outputs.sheet }}
 
       - name: Update comment on failure
-        if: ${{ needs.generator.result == 'failure' }}
+        if: ${{ needs.run-diffcalc.result == 'failure' }}
         uses: thollander/actions-comment-pull-request@fabd468d3a1a0b97feee5f6b9e499eab0dd903f6 # v2.5.0
         with:
           comment_tag: ${{ env.EXECUTION_ID }}
@@ -404,7 +188,7 @@ jobs:
             Difficulty calculation failed: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
 
       - name: Update comment on cancellation
-        if: ${{ needs.generator.result == 'cancelled' }}
+        if: ${{ needs.run-diffcalc.result == 'cancelled' }}
         uses: thollander/actions-comment-pull-request@fabd468d3a1a0b97feee5f6b9e499eab0dd903f6 # v2.5.0
         with:
           comment_tag: ${{ env.EXECUTION_ID }}

.github/workflows/report-nunit.yml

@@ -5,33 +5,40 @@
 name: Annotate CI run with test results
 on:
   workflow_run:
-    workflows: ["Continuous Integration"]
+    workflows: [ "Continuous Integration" ]
     types:
       - completed
-permissions: {}
+
+permissions:
+  contents: read
+  actions: read
+  checks: write
+
 jobs:
   annotate:
-    permissions:
-      checks: write # to create checks (dorny/test-reporter)
-
     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: Checkout
+        uses: actions/checkout@v4
+        with:
+          repository: ${{ github.event.workflow_run.repository.full_name }}
+          ref: ${{ github.event.workflow_run.head_sha }}
+
+      - name: Download results
+        uses: actions/download-artifact@v4
+        with:
+          pattern: osu-test-results-*
+          merge-multiple: true
+          run-id: ${{ github.event.workflow_run.id }}
+          github-token: ${{ github.token }}
+
       - name: Annotate CI run with test results
         uses: dorny/test-reporter@v1.8.0
         with:
-          artifact: osu-test-results-${{matrix.os.prettyname}}-${{matrix.threadingMode}}
-          name: Test Results (${{matrix.os.prettyname}}, ${{matrix.threadingMode}})
+          name: Results
           path: "*.trx"
           reporter: dotnet-trx
           list-suites: 'failed'

osu.Android/GameplayScreenRotationLocker.cs

@@ -5,7 +5,6 @@ using Android.Content.PM;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
-using osu.Game;
 using osu.Game.Screens.Play;
 
 namespace osu.Android
@@ -28,7 +27,7 @@ namespace osu.Android
         {
             gameActivity.RunOnUiThread(() =>
             {
-                gameActivity.RequestedOrientation = userPlaying.NewValue != LocalUserPlayingState.NotPlaying ? ScreenOrientation.Locked : gameActivity.DefaultOrientation;
+                gameActivity.RequestedOrientation = userPlaying.NewValue == LocalUserPlayingState.Playing ? ScreenOrientation.Locked : gameActivity.DefaultOrientation;
             });
         }
     }

osu.Desktop/NVAPI.cs

@@ -141,12 +141,12 @@ namespace osu.Desktop
 
                 // Make sure that this is a laptop.
                 IntPtr[] gpus = new IntPtr[64];
-                if (checkError(EnumPhysicalGPUs(gpus, out int gpuCount)))
+                if (checkError(EnumPhysicalGPUs(gpus, out int gpuCount), nameof(EnumPhysicalGPUs)))
                     return false;
 
                 for (int i = 0; i < gpuCount; i++)
                 {
-                    if (checkError(GetSystemType(gpus[i], out var type)))
+                    if (checkError(GetSystemType(gpus[i], out var type), nameof(GetSystemType)))
                         return false;
 
                     if (type == NvSystemType.LAPTOP)
@@ -182,7 +182,7 @@ namespace osu.Desktop
 
                 bool success = setSetting(NvSettingID.OGL_THREAD_CONTROL_ID, (uint)value);
 
-                Logger.Log(success ? $"Threaded optimizations set to \"{value}\"!" : "Threaded optimizations set failed!");
+                Logger.Log(success ? $"[NVAPI] Threaded optimizations set to \"{value}\"!" : "[NVAPI] Threaded optimizations set failed!");
             }
         }
 
@@ -205,7 +205,7 @@ namespace osu.Desktop
 
             uint numApps = profile.NumOfApps;
 
-            if (checkError(EnumApplications(sessionHandle, profileHandle, 0, ref numApps, applications)))
+            if (checkError(EnumApplications(sessionHandle, profileHandle, 0, ref numApps, applications), nameof(EnumApplications)))
                 return false;
 
             for (uint i = 0; i < numApps; i++)
@@ -236,10 +236,10 @@ namespace osu.Desktop
 
             isApplicationSpecific = true;
 
-            if (checkError(FindApplicationByName(sessionHandle, osu_filename, out profileHandle, ref application)))
+            if (checkError(FindApplicationByName(sessionHandle, osu_filename, out profileHandle, ref application), nameof(FindApplicationByName)))
             {
                 isApplicationSpecific = false;
-                if (checkError(GetCurrentGlobalProfile(sessionHandle, out profileHandle)))
+                if (checkError(GetCurrentGlobalProfile(sessionHandle, out profileHandle), nameof(GetCurrentGlobalProfile)))
                     return false;
             }
 
@@ -258,12 +258,10 @@ namespace osu.Desktop
                 Version = NvProfile.Stride,
                 IsPredefined = 0,
                 ProfileName = PROFILE_NAME,
-                GPUSupport = new uint[32]
+                GpuSupport = NvDrsGpuSupport.Geforce
             };
 
-            newProfile.GPUSupport[0] = 1;
-
-            if (checkError(CreateProfile(sessionHandle, ref newProfile, out profileHandle)))
+            if (checkError(CreateProfile(sessionHandle, ref newProfile, out profileHandle), nameof(CreateProfile)))
                 return false;
 
             return true;
@@ -284,7 +282,7 @@ namespace osu.Desktop
                 SettingID = settingId
             };
 
-            if (checkError(GetSetting(sessionHandle, profileHandle, settingId, ref setting)))
+            if (checkError(GetSetting(sessionHandle, profileHandle, settingId, ref setting), nameof(GetSetting)))
                 return false;
 
             return true;
@@ -313,7 +311,7 @@ namespace osu.Desktop
             };
 
             // Set the thread state
-            if (checkError(SetSetting(sessionHandle, profileHandle, ref newSetting)))
+            if (checkError(SetSetting(sessionHandle, profileHandle, ref newSetting), nameof(SetSetting)))
                 return false;
 
             // Get the profile (needed to check app count)
@@ -321,7 +319,7 @@ namespace osu.Desktop
             {
                 Version = NvProfile.Stride
             };
-            if (checkError(GetProfileInfo(sessionHandle, profileHandle, ref profile)))
+            if (checkError(GetProfileInfo(sessionHandle, profileHandle, ref profile), nameof(GetProfileInfo)))
                 return false;
 
             if (!containsApplication(profileHandle, profile, out application))
@@ -332,12 +330,12 @@ namespace osu.Desktop
                 application.AppName = osu_filename;
                 application.UserFriendlyName = APPLICATION_NAME;
 
-                if (checkError(CreateApplication(sessionHandle, profileHandle, ref application)))
+                if (checkError(CreateApplication(sessionHandle, profileHandle, ref application), nameof(CreateApplication)))
                     return false;
             }
 
             // Save!
-            return !checkError(SaveSettings(sessionHandle));
+            return !checkError(SaveSettings(sessionHandle), nameof(SaveSettings));
         }
 
         /// <summary>
@@ -346,20 +344,25 @@ namespace osu.Desktop
         /// <returns>If the operation succeeded.</returns>
         private static bool createSession()
         {
-            if (checkError(CreateSession(out sessionHandle)))
+            if (checkError(CreateSession(out sessionHandle), nameof(CreateSession)))
                 return false;
 
             // Load settings into session
-            if (checkError(LoadSettings(sessionHandle)))
+            if (checkError(LoadSettings(sessionHandle), nameof(LoadSettings)))
                 return false;
 
             return true;
         }
 
-        private static bool checkError(NvStatus status)
+        private static bool checkError(NvStatus status, string caller)
         {
             Status = status;
-            return status != NvStatus.OK;
+
+            bool hasError = status != NvStatus.OK;
+            if (hasError)
+                Logger.Log($"[NVAPI] {caller} call failed with status code {status}");
+
+            return hasError;
         }
 
         static NVAPI()
@@ -458,9 +461,7 @@ namespace osu.Desktop
         [MarshalAs(UnmanagedType.ByValTStr, SizeConst = NVAPI.UNICODE_STRING_MAX)]
         public string ProfileName;
 
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
-        public uint[] GPUSupport;
-
+        public NvDrsGpuSupport GpuSupport;
         public uint IsPredefined;
         public uint NumOfApps;
         public uint NumOfSettings;
@@ -606,6 +607,7 @@ namespace osu.Desktop
         SYNC_NOT_ACTIVE = -194, // The requested action cannot be performed without Sync being enabled.
         SYNC_MASTER_NOT_FOUND = -195, // The requested action cannot be performed without Sync Master being enabled.
         INVALID_SYNC_TOPOLOGY = -196, // Invalid displays passed in the NV_GSYNC_DISPLAY pointer.
+
         ECID_SIGN_ALGO_UNSUPPORTED = -197, // The specified signing algorithm is not supported. Either an incorrect value was entered or the current installed driver/hardware does not support the input value.
         ECID_KEY_VERIFICATION_FAILED = -198, // The encrypted public key verification has failed.
         FIRMWARE_OUT_OF_DATE = -199, // The device's firmware is out of date.
@@ -744,4 +746,12 @@ namespace osu.Desktop
         OGL_THREAD_CONTROL_NUM_VALUES = 2,
         OGL_THREAD_CONTROL_DEFAULT = 0
     }
+
+    [Flags]
+    internal enum NvDrsGpuSupport : uint
+    {
+        Geforce = 1 << 0,
+        Quadro = 1 << 1,
+        Nvs = 1 << 2
+    }
 }

osu.Game.Rulesets.Catch/Edit/CatchEditorPlayfield.cs

@@ -8,7 +8,6 @@ namespace osu.Game.Rulesets.Catch.Edit
 {
     public partial class CatchEditorPlayfield : CatchPlayfield
     {
-        // TODO fixme: the size of the catcher is not changed when circle size is changed in setup screen.
         public CatchEditorPlayfield(IBeatmapDifficultyInfo difficulty)
             : base(difficulty)
         {

osu.Game.Rulesets.Catch/Edit/DrawableCatchEditorRuleset.cs

@@ -2,16 +2,22 @@
 // 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.Extensions.ObjectExtensions;
 using osu.Game.Beatmaps;
 using osu.Game.Rulesets.Catch.UI;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.UI;
+using osu.Game.Screens.Edit;
 
 namespace osu.Game.Rulesets.Catch.Edit
 {
     public partial class DrawableCatchEditorRuleset : DrawableCatchRuleset
     {
+        [Resolved]
+        private EditorBeatmap editorBeatmap { get; set; } = null!;
+
         public readonly BindableDouble TimeRangeMultiplier = new BindableDouble(1);
 
         public DrawableCatchEditorRuleset(Ruleset ruleset, IBeatmap beatmap, IReadOnlyList<Mod>? mods = null)
@@ -28,6 +34,30 @@ namespace osu.Game.Rulesets.Catch.Edit
             TimeRange.Value = gamePlayTimeRange * TimeRangeMultiplier.Value * playfieldStretch;
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            editorBeatmap.BeatmapReprocessed += onBeatmapReprocessed;
+        }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (editorBeatmap.IsNotNull())
+                editorBeatmap.BeatmapReprocessed -= onBeatmapReprocessed;
+        }
+
+        private void onBeatmapReprocessed()
+        {
+            if (Playfield is CatchEditorPlayfield catchPlayfield)
+            {
+                catchPlayfield.Catcher.ApplyDifficulty(editorBeatmap.Difficulty);
+                catchPlayfield.CatcherArea.CatcherTrails.UpdateCatcherTrailsScale(catchPlayfield.Catcher.BodyScale);
+            }
+        }
+
         protected override Playfield CreatePlayfield() => new CatchEditorPlayfield(Beatmap.Difficulty);
 
         public override PlayfieldAdjustmentContainer CreatePlayfieldAdjustmentContainer() => new CatchEditorPlayfieldAdjustmentContainer();

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

@@ -116,7 +116,7 @@ namespace osu.Game.Rulesets.Catch.UI
         /// <summary>
         /// Width of the area that can be used to attempt catches during gameplay.
         /// </summary>
-        public readonly float CatchWidth;
+        public float CatchWidth { get; private set; }
 
         private readonly SkinnableCatcher body;
 
@@ -142,10 +142,7 @@ namespace osu.Game.Rulesets.Catch.UI
 
             Size = new Vector2(BASE_SIZE);
 
-            if (difficulty != null)
-                Scale = calculateScale(difficulty);
-
-            CatchWidth = CalculateCatchWidth(Scale);
+            ApplyDifficulty(difficulty);
 
             InternalChildren = new Drawable[]
             {
@@ -312,6 +309,17 @@ namespace osu.Game.Rulesets.Catch.UI
             }
         }
 
+        /// <summary>
+        /// Set the scale and catch width.
+        /// </summary>
+        public void ApplyDifficulty(IBeatmapDifficultyInfo? difficulty)
+        {
+            if (difficulty != null)
+                Scale = calculateScale(difficulty);
+
+            CatchWidth = CalculateCatchWidth(Scale);
+        }
+
         /// <summary>
         /// Drop any fruit off the plate.
         /// </summary>

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

@@ -32,7 +32,7 @@ namespace osu.Game.Rulesets.Catch.UI
 
         private readonly CatchComboDisplay comboDisplay;
 
-        private readonly CatcherTrailDisplay catcherTrails;
+        public readonly CatcherTrailDisplay CatcherTrails;
 
         private Catcher catcher = null!;
 
@@ -55,7 +55,7 @@ namespace osu.Game.Rulesets.Catch.UI
             Children = new Drawable[]
             {
                 catcherContainer = new Container<Catcher> { RelativeSizeAxes = Axes.Both },
-                catcherTrails = new CatcherTrailDisplay(),
+                CatcherTrails = new CatcherTrailDisplay(),
                 comboDisplay = new CatchComboDisplay
                 {
                     RelativeSizeAxes = Axes.None,
@@ -112,7 +112,7 @@ namespace osu.Game.Rulesets.Catch.UI
             {
                 const double trail_generation_interval = 16;
 
-                if (Time.Current - catcherTrails.LastDashTrailTime >= trail_generation_interval)
+                if (Time.Current - CatcherTrails.LastDashTrailTime >= trail_generation_interval)
                     displayCatcherTrail(Catcher.HyperDashing ? CatcherTrailAnimation.HyperDashing : CatcherTrailAnimation.Dashing);
             }
 
@@ -170,6 +170,6 @@ namespace osu.Game.Rulesets.Catch.UI
             }
         }
 
-        private void displayCatcherTrail(CatcherTrailAnimation animation) => catcherTrails.Add(new CatcherTrailEntry(Time.Current, Catcher.CurrentState, Catcher.X, Catcher.BodyScale, animation));
+        private void displayCatcherTrail(CatcherTrailAnimation animation) => CatcherTrails.Add(new CatcherTrailEntry(Time.Current, Catcher.CurrentState, Catcher.X, Catcher.BodyScale, animation));
     }
 }

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

@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
@@ -10,6 +11,7 @@ using osu.Framework.Graphics.Pooling;
 using osu.Game.Rulesets.Catch.Skinning;
 using osu.Game.Rulesets.Objects.Pooling;
 using osu.Game.Skinning;
+using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Catch.UI
@@ -55,6 +57,25 @@ namespace osu.Game.Rulesets.Catch.UI
             };
         }
 
+        /// <summary>
+        /// Update the scale of all trails.
+        /// </summary>
+        /// <param name="scale">The new body scale of the Catcher</param>
+        public void UpdateCatcherTrailsScale(Vector2 scale)
+        {
+            var oldEntries = Entries.ToList();
+
+            Clear();
+
+            foreach (var oldEntry in oldEntries)
+            {
+                // use magnitude of the new scale while preserving the sign of the old one in the X direction.
+                // the end effect is preserving the direction in which the trail sprites face, which is important.
+                var targetScale = new Vector2(Math.Abs(scale.X) * Math.Sign(oldEntry.Scale.X), Math.Abs(scale.Y));
+                Add(new CatcherTrailEntry(oldEntry.LifetimeStart, oldEntry.CatcherState, oldEntry.Position, targetScale, oldEntry.Animation));
+            }
+        }
+
         protected override void LoadComplete()
         {
             base.LoadComplete();

osu.Game.Rulesets.Osu/Difficulty/OsuPerformanceCalculator.cs

@@ -59,6 +59,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             countMiss = score.Statistics.GetValueOrDefault(HitResult.Miss);
             countSliderEndsDropped = osuAttributes.SliderCount - score.Statistics.GetValueOrDefault(HitResult.SliderTailHit);
             countSliderTickMiss = score.Statistics.GetValueOrDefault(HitResult.LargeTickMiss);
+            effectiveMissCount = countMiss;
 
             if (osuAttributes.SliderCount > 0)
             {
@@ -87,6 +88,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
             }
 
             effectiveMissCount = Math.Max(countMiss, effectiveMissCount);
+            effectiveMissCount = Math.Min(totalHits, effectiveMissCount);
 
             double multiplier = PERFORMANCE_BASE_MULTIPLIER;
 
@@ -177,7 +179,7 @@ namespace osu.Game.Rulesets.Osu.Difficulty
                 {
                     // We add tick misses here since they too mean that the player didn't follow the slider properly
                     // We however aren't adding misses here because missing slider heads has a harsh penalty by itself and doesn't mean that the rest of the slider wasn't followed properly
-                    estimateImproperlyFollowedDifficultSliders = Math.Min(countSliderEndsDropped + countSliderTickMiss, estimateDifficultSliders);
+                    estimateImproperlyFollowedDifficultSliders = Math.Clamp(countSliderEndsDropped + countSliderTickMiss, 0, estimateDifficultSliders);
                 }
 
                 double sliderNerfFactor = (1 - attributes.SliderFactor) * Math.Pow(1 - estimateImproperlyFollowedDifficultSliders / estimateDifficultSliders, 3) + attributes.SliderFactor;

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

@@ -10,6 +10,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
+using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
 using osu.Game.Rulesets.Osu.UI;
@@ -25,13 +26,17 @@ namespace osu.Game.Rulesets.Osu.Edit
 
         private readonly OsuGridToolboxGroup gridToolbox;
 
-        private readonly Bindable<PreciseRotationInfo> rotationInfo = new Bindable<PreciseRotationInfo>(new PreciseRotationInfo(0, RotationOrigin.GridCentre));
+        private readonly Bindable<PreciseRotationInfo> rotationInfo = new Bindable<PreciseRotationInfo>(new PreciseRotationInfo(0, EditorOrigin.GridCentre));
 
         private SliderWithTextBoxInput<float> angleInput = null!;
         private EditorRadioButtonCollection rotationOrigin = null!;
 
+        private RadioButton gridCentreButton = null!;
+        private RadioButton playfieldCentreButton = null!;
         private RadioButton selectionCentreButton = null!;
 
+        private Bindable<EditorOrigin> configRotationOrigin = null!;
+
         public PreciseRotationPopover(SelectionRotationHandler rotationHandler, OsuGridToolboxGroup gridToolbox)
         {
             this.rotationHandler = rotationHandler;
@@ -41,8 +46,10 @@ namespace osu.Game.Rulesets.Osu.Edit
         }
 
         [BackgroundDependencyLoader]
-        private void load()
+        private void load(OsuConfigManager config)
         {
+            configRotationOrigin = config.GetBindable<EditorOrigin>(OsuSetting.EditorRotationOrigin);
+
             Child = new FillFlowContainer
             {
                 Width = 220,
@@ -66,14 +73,14 @@ namespace osu.Game.Rulesets.Osu.Edit
                         RelativeSizeAxes = Axes.X,
                         Items = new[]
                         {
-                            new RadioButton("Grid centre",
-                                () => rotationInfo.Value = rotationInfo.Value with { Origin = RotationOrigin.GridCentre },
+                            gridCentreButton = new RadioButton("Grid centre",
+                                () => rotationInfo.Value = rotationInfo.Value with { Origin = EditorOrigin.GridCentre },
                                 () => new SpriteIcon { Icon = FontAwesome.Regular.PlusSquare }),
-                            new RadioButton("Playfield centre",
-                                () => rotationInfo.Value = rotationInfo.Value with { Origin = RotationOrigin.PlayfieldCentre },
+                            playfieldCentreButton = new RadioButton("Playfield centre",
+                                () => rotationInfo.Value = rotationInfo.Value with { Origin = EditorOrigin.PlayfieldCentre },
                                 () => new SpriteIcon { Icon = FontAwesome.Regular.Square }),
                             selectionCentreButton = new RadioButton("Selection centre",
-                                () => rotationInfo.Value = rotationInfo.Value with { Origin = RotationOrigin.SelectionCentre },
+                                () => rotationInfo.Value = rotationInfo.Value with { Origin = EditorOrigin.SelectionCentre },
                                 () => new SpriteIcon { Icon = FontAwesome.Solid.VectorSquare })
                         }
                     }
@@ -95,13 +102,63 @@ namespace osu.Game.Rulesets.Osu.Edit
                 angleInput.SelectAll();
             });
             angleInput.Current.BindValueChanged(angle => rotationInfo.Value = rotationInfo.Value with { Degrees = angle.NewValue });
-            rotationOrigin.Items.First().Select();
 
             rotationHandler.CanRotateAroundSelectionOrigin.BindValueChanged(e =>
             {
                 selectionCentreButton.Selected.Disabled = !e.NewValue;
             }, true);
 
+            bool didSelect = false;
+
+            configRotationOrigin.BindValueChanged(val =>
+            {
+                switch (configRotationOrigin.Value)
+                {
+                    case EditorOrigin.GridCentre:
+                        if (!gridCentreButton.Selected.Disabled)
+                        {
+                            gridCentreButton.Select();
+                            didSelect = true;
+                        }
+
+                        break;
+
+                    case EditorOrigin.PlayfieldCentre:
+                        if (!playfieldCentreButton.Selected.Disabled)
+                        {
+                            playfieldCentreButton.Select();
+                            didSelect = true;
+                        }
+
+                        break;
+
+                    case EditorOrigin.SelectionCentre:
+                        if (!selectionCentreButton.Selected.Disabled)
+                        {
+                            selectionCentreButton.Select();
+                            didSelect = true;
+                        }
+
+                        break;
+                }
+            }, true);
+
+            if (!didSelect)
+                rotationOrigin.Items.First(b => !b.Selected.Disabled).Select();
+
+            gridCentreButton.Selected.BindValueChanged(b =>
+            {
+                if (b.NewValue) configRotationOrigin.Value = EditorOrigin.GridCentre;
+            });
+            playfieldCentreButton.Selected.BindValueChanged(b =>
+            {
+                if (b.NewValue) configRotationOrigin.Value = EditorOrigin.PlayfieldCentre;
+            });
+            selectionCentreButton.Selected.BindValueChanged(b =>
+            {
+                if (b.NewValue) configRotationOrigin.Value = EditorOrigin.SelectionCentre;
+            });
+
             rotationInfo.BindValueChanged(rotation =>
             {
                 rotationHandler.Update(rotation.NewValue.Degrees, getOriginPosition(rotation.NewValue));
@@ -111,9 +168,9 @@ namespace osu.Game.Rulesets.Osu.Edit
         private Vector2? getOriginPosition(PreciseRotationInfo rotation) =>
             rotation.Origin switch
             {
-                RotationOrigin.GridCentre => gridToolbox.StartPosition.Value,
-                RotationOrigin.PlayfieldCentre => OsuPlayfield.BASE_SIZE / 2,
-                RotationOrigin.SelectionCentre => null,
+                EditorOrigin.GridCentre => gridToolbox.StartPosition.Value,
+                EditorOrigin.PlayfieldCentre => OsuPlayfield.BASE_SIZE / 2,
+                EditorOrigin.SelectionCentre => null,
                 _ => throw new ArgumentOutOfRangeException(nameof(rotation))
             };
 
@@ -143,12 +200,5 @@ namespace osu.Game.Rulesets.Osu.Edit
         }
     }
 
-    public enum RotationOrigin
-    {
-        GridCentre,
-        PlayfieldCentre,
-        SelectionCentre
-    }
-
-    public record PreciseRotationInfo(float Degrees, RotationOrigin Origin);
+    public record PreciseRotationInfo(float Degrees, EditorOrigin Origin);
 }

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

@@ -10,6 +10,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
+using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osu.Game.Input.Bindings;
@@ -18,6 +19,7 @@ using osu.Game.Rulesets.Osu.Objects;
 using osu.Game.Rulesets.Osu.UI;
 using osu.Game.Screens.Edit;
 using osu.Game.Screens.Edit.Components.RadioButtons;
+using osu.Game.Screens.Edit.Compose.Components;
 using osuTK;
 
 namespace osu.Game.Rulesets.Osu.Edit
@@ -28,7 +30,7 @@ namespace osu.Game.Rulesets.Osu.Edit
 
         private readonly OsuGridToolboxGroup gridToolbox;
 
-        private readonly Bindable<PreciseScaleInfo> scaleInfo = new Bindable<PreciseScaleInfo>(new PreciseScaleInfo(1, ScaleOrigin.GridCentre, true, true));
+        private readonly Bindable<PreciseScaleInfo> scaleInfo = new Bindable<PreciseScaleInfo>(new PreciseScaleInfo(1, EditorOrigin.GridCentre, true, true));
 
         private SliderWithTextBoxInput<float> scaleInput = null!;
         private BindableNumber<float> scaleInputBindable = null!;
@@ -41,6 +43,8 @@ namespace osu.Game.Rulesets.Osu.Edit
         private OsuCheckbox xCheckBox = null!;
         private OsuCheckbox yCheckBox = null!;
 
+        private Bindable<EditorOrigin> configScaleOrigin = null!;
+
         private BindableList<HitObject> selectedItems { get; } = new BindableList<HitObject>();
 
         public PreciseScalePopover(OsuSelectionScaleHandler scaleHandler, OsuGridToolboxGroup gridToolbox)
@@ -52,10 +56,12 @@ namespace osu.Game.Rulesets.Osu.Edit
         }
 
         [BackgroundDependencyLoader]
-        private void load(EditorBeatmap editorBeatmap)
+        private void load(EditorBeatmap editorBeatmap, OsuConfigManager config)
         {
             selectedItems.BindTo(editorBeatmap.SelectedHitObjects);
 
+            configScaleOrigin = config.GetBindable<EditorOrigin>(OsuSetting.EditorScaleOrigin);
+
             Child = new FillFlowContainer
             {
                 Width = 220,
@@ -67,7 +73,7 @@ namespace osu.Game.Rulesets.Osu.Edit
                     {
                         Current = scaleInputBindable = new BindableNumber<float>
                         {
-                            MinValue = 0.5f,
+                            MinValue = 0.05f,
                             MaxValue = 2,
                             Precision = 0.001f,
                             Value = 1,
@@ -82,13 +88,13 @@ namespace osu.Game.Rulesets.Osu.Edit
                         Items = new[]
                         {
                             gridCentreButton = new RadioButton("Grid centre",
-                                () => setOrigin(ScaleOrigin.GridCentre),
+                                () => setOrigin(EditorOrigin.GridCentre),
                                 () => new SpriteIcon { Icon = FontAwesome.Regular.PlusSquare }),
                             playfieldCentreButton = new RadioButton("Playfield centre",
-                                () => setOrigin(ScaleOrigin.PlayfieldCentre),
+                                () => setOrigin(EditorOrigin.PlayfieldCentre),
                                 () => new SpriteIcon { Icon = FontAwesome.Regular.Square }),
                             selectionCentreButton = new RadioButton("Selection centre",
-                                () => setOrigin(ScaleOrigin.SelectionCentre),
+                                () => setOrigin(EditorOrigin.SelectionCentre),
                                 () => new SpriteIcon { Icon = FontAwesome.Solid.VectorSquare })
                         }
                     },
@@ -165,7 +171,56 @@ namespace osu.Game.Rulesets.Osu.Edit
             playfieldCentreButton.Selected.Disabled = scaleHandler.IsScalingSlider.Value && !selectionCentreButton.Selected.Disabled;
             gridCentreButton.Selected.Disabled = playfieldCentreButton.Selected.Disabled;
 
-            scaleOrigin.Items.First(b => !b.Selected.Disabled).Select();
+            bool didSelect = false;
+
+            configScaleOrigin.BindValueChanged(val =>
+            {
+                switch (configScaleOrigin.Value)
+                {
+                    case EditorOrigin.GridCentre:
+                        if (!gridCentreButton.Selected.Disabled)
+                        {
+                            gridCentreButton.Select();
+                            didSelect = true;
+                        }
+
+                        break;
+
+                    case EditorOrigin.PlayfieldCentre:
+                        if (!playfieldCentreButton.Selected.Disabled)
+                        {
+                            playfieldCentreButton.Select();
+                            didSelect = true;
+                        }
+
+                        break;
+
+                    case EditorOrigin.SelectionCentre:
+                        if (!selectionCentreButton.Selected.Disabled)
+                        {
+                            selectionCentreButton.Select();
+                            didSelect = true;
+                        }
+
+                        break;
+                }
+            }, true);
+
+            if (!didSelect)
+                scaleOrigin.Items.First(b => !b.Selected.Disabled).Select();
+
+            gridCentreButton.Selected.BindValueChanged(b =>
+            {
+                if (b.NewValue) configScaleOrigin.Value = EditorOrigin.GridCentre;
+            });
+            playfieldCentreButton.Selected.BindValueChanged(b =>
+            {
+                if (b.NewValue) configScaleOrigin.Value = EditorOrigin.PlayfieldCentre;
+            });
+            selectionCentreButton.Selected.BindValueChanged(b =>
+            {
+                if (b.NewValue) configScaleOrigin.Value = EditorOrigin.SelectionCentre;
+            });
 
             scaleInfo.BindValueChanged(scale =>
             {
@@ -182,7 +237,7 @@ namespace osu.Game.Rulesets.Osu.Edit
 
         private void updateAxisCheckBoxesEnabled()
         {
-            if (scaleInfo.Value.Origin != ScaleOrigin.SelectionCentre)
+            if (scaleInfo.Value.Origin != EditorOrigin.SelectionCentre)
             {
                 toggleAxisAvailable(xCheckBox.Current, true);
                 toggleAxisAvailable(yCheckBox.Current, true);
@@ -208,7 +263,7 @@ namespace osu.Game.Rulesets.Osu.Edit
             if (!scaleHandler.OriginalSurroundingQuad.HasValue)
                 return;
 
-            const float min_scale = 0.5f;
+            const float min_scale = 0.05f;
             const float max_scale = 10;
 
             var scale = scaleHandler.ClampScaleToPlayfieldBounds(new Vector2(max_scale), getOriginPosition(scaleInfo.Value), getAdjustAxis(scaleInfo.Value), getRotation(scaleInfo.Value));
@@ -230,7 +285,7 @@ namespace osu.Game.Rulesets.Osu.Edit
             scaleInputBindable.MinValue = MathF.Min(1, MathF.Max(scale.X, scale.Y));
         }
 
-        private void setOrigin(ScaleOrigin origin)
+        private void setOrigin(EditorOrigin origin)
         {
             scaleInfo.Value = scaleInfo.Value with { Origin = origin };
             updateMinMaxScale();
@@ -241,13 +296,13 @@ namespace osu.Game.Rulesets.Osu.Edit
         {
             switch (scale.Origin)
             {
-                case ScaleOrigin.GridCentre:
+                case EditorOrigin.GridCentre:
                     return gridToolbox.StartPosition.Value;
 
-                case ScaleOrigin.PlayfieldCentre:
+                case EditorOrigin.PlayfieldCentre:
                     return OsuPlayfield.BASE_SIZE / 2;
 
-                case ScaleOrigin.SelectionCentre:
+                case EditorOrigin.SelectionCentre:
                     if (selectedItems.Count == 1 && selectedItems.First() is Slider slider)
                         return slider.Position;
 
@@ -271,7 +326,7 @@ namespace osu.Game.Rulesets.Osu.Edit
             return result;
         }
 
-        private float getRotation(PreciseScaleInfo scale) => scale.Origin == ScaleOrigin.GridCentre ? gridToolbox.GridLinesRotation.Value : 0;
+        private float getRotation(PreciseScaleInfo scale) => scale.Origin == EditorOrigin.GridCentre ? gridToolbox.GridLinesRotation.Value : 0;
 
         protected override void PopIn()
         {
@@ -299,12 +354,5 @@ namespace osu.Game.Rulesets.Osu.Edit
         }
     }
 
-    public enum ScaleOrigin
-    {
-        GridCentre,
-        PlayfieldCentre,
-        SelectionCentre
-    }
-
-    public record PreciseScaleInfo(float Scale, ScaleOrigin Origin, bool XAxis, bool YAxis);
+    public record PreciseScaleInfo(float Scale, EditorOrigin Origin, bool XAxis, bool YAxis);
 }

osu.Game.Rulesets.Taiko/Difficulty/Skills/Stamina.cs

@@ -1,33 +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;
 using osu.Game.Rulesets.Difficulty.Preprocessing;
 using osu.Game.Rulesets.Difficulty.Skills;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Taiko.Difficulty.Evaluators;
+using osu.Game.Rulesets.Taiko.Difficulty.Preprocessing;
 
 namespace osu.Game.Rulesets.Taiko.Difficulty.Skills
 {
     /// <summary>
     /// Calculates the stamina coefficient of taiko difficulty.
     /// </summary>
-    public class Stamina : StrainDecaySkill
+    public class Stamina : StrainSkill
     {
-        protected override double SkillMultiplier => 1.1;
-        protected override double StrainDecayBase => 0.4;
+        private double skillMultiplier => 1.1;
+        private double strainDecayBase => 0.4;
+
+        private readonly bool singleColourStamina;
+
+        private double currentStrain;
 
         /// <summary>
         /// Creates a <see cref="Stamina"/> skill.
         /// </summary>
         /// <param name="mods">Mods for use in skill calculations.</param>
-        public Stamina(Mod[] mods)
+        /// <param name="singleColourStamina">Reads when Stamina is from a single coloured pattern.</param>
+        public Stamina(Mod[] mods, bool singleColourStamina)
             : base(mods)
         {
+            this.singleColourStamina = singleColourStamina;
         }
 
-        protected override double StrainValueOf(DifficultyHitObject current)
+        private double strainDecay(double ms) => Math.Pow(strainDecayBase, ms / 1000);
+
+        protected override double StrainValueAt(DifficultyHitObject current)
         {
-            return StaminaEvaluator.EvaluateDifficultyOf(current);
+            currentStrain *= strainDecay(current.DeltaTime);
+            currentStrain += StaminaEvaluator.EvaluateDifficultyOf(current) * skillMultiplier;
+
+            // Safely prevents previous strains from shifting as new notes are added.
+            var currentObject = current as TaikoDifficultyHitObject;
+            int index = currentObject?.Colour.MonoStreak?.HitObjects.IndexOf(currentObject) ?? 0;
+
+            if (singleColourStamina)
+                return currentStrain / (1 + Math.Exp(-(index - 10) / 2.0));
+
+            return currentStrain;
         }
+
+        protected override double CalculateInitialStrain(double time, DifficultyHitObject current) => singleColourStamina ? 0 : currentStrain * strainDecay(time - current.Previous(0).StartTime);
     }
 }

osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyAttributes.cs

@@ -16,6 +16,12 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
         [JsonProperty("stamina_difficulty")]
         public double StaminaDifficulty { get; set; }
 
+        /// <summary>
+        /// The ratio of stamina difficulty from mono-color (single colour) streams to total stamina difficulty.
+        /// </summary>
+        [JsonProperty("mono_stamina_factor")]
+        public double MonoStaminaFactor { get; set; }
+
         /// <summary>
         /// The difficulty corresponding to the rhythm skill.
         /// </summary>
@@ -60,6 +66,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             yield return (ATTRIB_ID_DIFFICULTY, StarRating);
             yield return (ATTRIB_ID_GREAT_HIT_WINDOW, GreatHitWindow);
             yield return (ATTRIB_ID_OK_HIT_WINDOW, OkHitWindow);
+            yield return (ATTRIB_ID_MONO_STAMINA_FACTOR, MonoStaminaFactor);
         }
 
         public override void FromDatabaseAttributes(IReadOnlyDictionary<int, double> values, IBeatmapOnlineInfo onlineInfo)
@@ -69,6 +76,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             StarRating = values[ATTRIB_ID_DIFFICULTY];
             GreatHitWindow = values[ATTRIB_ID_GREAT_HIT_WINDOW];
             OkHitWindow = values[ATTRIB_ID_OK_HIT_WINDOW];
+            MonoStaminaFactor = values[ATTRIB_ID_MONO_STAMINA_FACTOR];
         }
     }
 }

osu.Game.Rulesets.Taiko/Difficulty/TaikoDifficultyCalculator.cs

@@ -38,7 +38,8 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             {
                 new Rhythm(mods),
                 new Colour(mods),
-                new Stamina(mods)
+                new Stamina(mods, false),
+                new Stamina(mods, true)
             };
         }
 
@@ -79,14 +80,26 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             Colour colour = (Colour)skills.First(x => x is Colour);
             Rhythm rhythm = (Rhythm)skills.First(x => x is Rhythm);
             Stamina stamina = (Stamina)skills.First(x => x is Stamina);
+            Stamina singleColourStamina = (Stamina)skills.Last(x => x is Stamina);
 
             double colourRating = colour.DifficultyValue() * colour_skill_multiplier;
             double rhythmRating = rhythm.DifficultyValue() * rhythm_skill_multiplier;
             double staminaRating = stamina.DifficultyValue() * stamina_skill_multiplier;
+            double monoStaminaRating = singleColourStamina.DifficultyValue() * stamina_skill_multiplier;
+            double monoStaminaFactor = staminaRating == 0 ? 1 : Math.Pow(monoStaminaRating / staminaRating, 5);
 
             double combinedRating = combinedDifficultyValue(rhythm, colour, stamina);
             double starRating = rescale(combinedRating * 1.4);
 
+            // TODO: This is temporary measure as we don't detect abuse of multiple-input playstyles of converts within the current system.
+            if (beatmap.BeatmapInfo.Ruleset.OnlineID == 0)
+            {
+                starRating *= 0.925;
+                // For maps with low colour variance and high stamina requirement, multiple inputs are more likely to be abused.
+                if (colourRating < 2 && staminaRating > 8)
+                    starRating *= 0.80;
+            }
+
             HitWindows hitWindows = new TaikoHitWindows();
             hitWindows.SetDifficulty(beatmap.Difficulty.OverallDifficulty);
 
@@ -95,6 +108,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
                 StarRating = starRating,
                 Mods = mods,
                 StaminaDifficulty = staminaRating,
+                MonoStaminaFactor = monoStaminaFactor,
                 RhythmDifficulty = rhythmRating,
                 ColourDifficulty = colourRating,
                 PeakDifficulty = combinedRating,

osu.Game.Rulesets.Taiko/Difficulty/TaikoPerformanceCalculator.cs

@@ -42,18 +42,18 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             if (totalSuccessfulHits > 0)
                 effectiveMissCount = Math.Max(1.0, 1000.0 / totalSuccessfulHits) * countMiss;
 
-            // TODO: The detection of rulesets is temporary until the leftover old skills have been reworked.
+            // Converts are detected and omitted from mod-specific bonuses due to the scope of current difficulty calculation.
             bool isConvert = score.BeatmapInfo!.Ruleset.OnlineID != 1;
 
             double multiplier = 1.13;
 
-            if (score.Mods.Any(m => m is ModHidden))
+            if (score.Mods.Any(m => m is ModHidden) && !isConvert)
                 multiplier *= 1.075;
 
             if (score.Mods.Any(m => m is ModEasy))
-                multiplier *= 0.975;
+                multiplier *= 0.950;
 
-            double difficultyValue = computeDifficultyValue(score, taikoAttributes, isConvert);
+            double difficultyValue = computeDifficultyValue(score, taikoAttributes);
             double accuracyValue = computeAccuracyValue(score, taikoAttributes, isConvert);
             double totalValue =
                 Math.Pow(
@@ -71,7 +71,7 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             };
         }
 
-        private double computeDifficultyValue(ScoreInfo score, TaikoDifficultyAttributes attributes, bool isConvert)
+        private double computeDifficultyValue(ScoreInfo score, TaikoDifficultyAttributes attributes)
         {
             double difficultyValue = Math.Pow(5 * Math.Max(1.0, attributes.StarRating / 0.115) - 4.0, 2.25) / 1150.0;
 
@@ -81,21 +81,25 @@ namespace osu.Game.Rulesets.Taiko.Difficulty
             difficultyValue *= Math.Pow(0.986, effectiveMissCount);
 
             if (score.Mods.Any(m => m is ModEasy))
-                difficultyValue *= 0.985;
+                difficultyValue *= 0.90;
 
-            if (score.Mods.Any(m => m is ModHidden) && !isConvert)
+            if (score.Mods.Any(m => m is ModHidden))
                 difficultyValue *= 1.025;
 
             if (score.Mods.Any(m => m is ModHardRock))
                 difficultyValue *= 1.10;
 
             if (score.Mods.Any(m => m is ModFlashlight<TaikoHitObject>))
-                difficultyValue *= 1.050 * lengthBonus;
+                difficultyValue *= Math.Max(1, 1.050 - Math.Min(attributes.MonoStaminaFactor / 50, 1) * lengthBonus);
 
             if (estimatedUnstableRate == null)
                 return 0;
 
-            return difficultyValue * Math.Pow(SpecialFunctions.Erf(400 / (Math.Sqrt(2) * estimatedUnstableRate.Value)), 2.0);
+            // Scale accuracy more harshly on nearly-completely mono (single coloured) speed maps.
+            double accScalingExponent = 2 + attributes.MonoStaminaFactor;
+            double accScalingShift = 300 - 100 * attributes.MonoStaminaFactor;
+
+            return difficultyValue * Math.Pow(SpecialFunctions.Erf(accScalingShift / (Math.Sqrt(2) * estimatedUnstableRate.Value)), accScalingExponent);
         }
 
         private double computeAccuracyValue(ScoreInfo score, TaikoDifficultyAttributes attributes, bool isConvert)

osu.Game.Rulesets.Taiko/Edit/TaikoSelectionHandler.cs

@@ -54,17 +54,17 @@ namespace osu.Game.Rulesets.Taiko.Edit
 
         public void SetStrongState(bool state)
         {
-            if (SelectedItems.OfType<Hit>().All(h => h.IsStrong == state))
+            if (SelectedItems.OfType<TaikoStrongableHitObject>().All(h => h.IsStrong == state))
                 return;
 
             EditorBeatmap.PerformOnSelection(h =>
             {
-                if (!(h is Hit taikoHit)) return;
+                if (h is not TaikoStrongableHitObject strongable) return;
 
-                if (taikoHit.IsStrong != state)
+                if (strongable.IsStrong != state)
                 {
-                    taikoHit.IsStrong = state;
-                    EditorBeatmap.Update(taikoHit);
+                    strongable.IsStrong = state;
+                    EditorBeatmap.Update(strongable);
                 }
             });
         }

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

@@ -31,6 +31,9 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
         public override Quad ScreenSpaceDrawQuad => MainPiece.Drawable.ScreenSpaceDrawQuad;
 
+        // done strictly for editor purposes.
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => MainPiece.Drawable.ReceivePositionalInputAt(screenSpacePos);
+
         /// <summary>
         /// Rolling number of tick hits. This increases for hits and decreases for misses.
         /// </summary>
@@ -78,6 +81,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
             base.RecreatePieces();
             updateColour();
+            Height = HitObject.IsStrong ? TaikoStrongableHitObject.DEFAULT_STRONG_SIZE : TaikoHitObject.DEFAULT_SIZE;
         }
 
         protected override void OnFree()

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

@@ -12,6 +12,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -44,6 +45,12 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             IsFirstTick.Value = HitObject.FirstTick;
         }
 
+        protected override void RecreatePieces()
+        {
+            base.RecreatePieces();
+            Size = new Vector2(HitObject.IsStrong ? TaikoStrongableHitObject.DEFAULT_STRONG_SIZE : TaikoHitObject.DEFAULT_SIZE);
+        }
+
         protected override void CheckForResult(bool userTriggered, double timeOffset)
         {
             if (!userTriggered)

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

@@ -14,6 +14,7 @@ using osu.Game.Rulesets.Objects.Drawables;
 using osu.Game.Rulesets.Scoring;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -63,6 +64,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
             updateActionsFromType();
             base.RecreatePieces();
+            Size = new Vector2(HitObject.IsStrong ? TaikoStrongableHitObject.DEFAULT_STRONG_SIZE : TaikoHitObject.DEFAULT_SIZE);
         }
 
         protected override void OnFree()

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

@@ -19,6 +19,7 @@ using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Taiko.Skinning.Default;
 using osu.Game.Screens.Play;
 using osu.Game.Skinning;
+using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -34,6 +35,8 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         /// </summary>
         private const double ring_appear_offset = 100;
 
+        private Vector2 baseSize;
+
         private readonly Container<DrawableSwellTick> ticks;
         private readonly Container bodyContainer;
         private readonly CircularContainer targetRing;
@@ -141,6 +144,12 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
                 Origin = Anchor.Centre,
             });
 
+        protected override void RecreatePieces()
+        {
+            base.RecreatePieces();
+            Size = baseSize = new Vector2(TaikoHitObject.DEFAULT_SIZE);
+        }
+
         protected override void OnFree()
         {
             base.OnFree();
@@ -269,7 +278,7 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
         {
             base.Update();
 
-            Size = BaseSize * Parent!.RelativeChildSize;
+            Size = baseSize * Parent!.RelativeChildSize;
 
             // Make the swell stop at the hit target
             X = Math.Max(0, X);

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

@@ -130,7 +130,6 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
         public new TObject HitObject => (TObject)base.HitObject;
 
-        protected Vector2 BaseSize;
         protected SkinnableDrawable MainPiece;
 
         protected DrawableTaikoHitObject([CanBeNull] TObject hitObject)
@@ -152,8 +151,6 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 
         protected virtual void RecreatePieces()
         {
-            Size = BaseSize = new Vector2(TaikoHitObject.DEFAULT_SIZE);
-
             if (MainPiece != null)
                 Content.Remove(MainPiece, true);
 

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

@@ -8,7 +8,6 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Rulesets.Objects;
 using osu.Game.Rulesets.Objects.Drawables;
-using osuTK;
 
 namespace osu.Game.Rulesets.Taiko.Objects.Drawables
 {
@@ -44,13 +43,6 @@ namespace osu.Game.Rulesets.Taiko.Objects.Drawables
             isStrong.UnbindEvents();
         }
 
-        protected override void RecreatePieces()
-        {
-            base.RecreatePieces();
-            if (HitObject.IsStrong)
-                Size = BaseSize = new Vector2(TaikoStrongableHitObject.DEFAULT_STRONG_SIZE);
-        }
-
         protected override void AddNestedHitObject(DrawableHitObject hitObject)
         {
             base.AddNestedHitObject(hitObject);

osu.Game.Rulesets.Taiko/Skinning/Legacy/LegacyDrumRoll.cs

@@ -1,6 +1,7 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
@@ -9,6 +10,7 @@ using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.Textures;
 using osu.Game.Graphics;
 using osu.Game.Skinning;
+using osuTK;
 using osuTK.Graphics;
 
 namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
@@ -19,13 +21,22 @@ namespace osu.Game.Rulesets.Taiko.Skinning.Legacy
         {
             get
             {
-                var headDrawQuad = headCircle.ScreenSpaceDrawQuad;
-                var tailDrawQuad = tailCircle.ScreenSpaceDrawQuad;
+                // the reason why this calculation is so involved is that the head & tail sprites have different sizes/radii.
+                // therefore naively taking the SSDQs of them and making a quad out of them results in a trapezoid shape and not a box.
+                var headCentre = headCircle.ScreenSpaceDrawQuad.Centre;
+                var tailCentre = (tailCircle.ScreenSpaceDrawQuad.TopLeft + tailCircle.ScreenSpaceDrawQuad.BottomLeft) / 2;
 
-                return new Quad(headDrawQuad.TopLeft, tailDrawQuad.TopRight, headDrawQuad.BottomLeft, tailDrawQuad.BottomRight);
+                float headRadius = headCircle.ScreenSpaceDrawQuad.Height / 2;
+                float tailRadius = tailCircle.ScreenSpaceDrawQuad.Height / 2;
+                float radius = Math.Max(headRadius, tailRadius);
+
+                var rectangle = new RectangleF(headCentre.X, headCentre.Y, tailCentre.X - headCentre.X, 0).Inflate(radius);
+                return new Quad(rectangle.TopLeft, rectangle.TopRight, rectangle.BottomLeft, rectangle.BottomRight);
             }
         }
 
+        public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => ScreenSpaceDrawQuad.Contains(screenSpacePos);
+
         private LegacyCirclePiece headCircle = null!;
 
         private Sprite body = null!;

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

@@ -120,11 +120,11 @@ namespace osu.Game.Tests.Beatmaps.Formats
         private void compareBeatmaps((IBeatmap beatmap, TestLegacySkin skin) expected, (IBeatmap beatmap, TestLegacySkin skin) actual)
         {
             // Check all control points that are still considered to be at a global level.
-            Assert.That(expected.beatmap.ControlPointInfo.TimingPoints.Serialize(), Is.EqualTo(actual.beatmap.ControlPointInfo.TimingPoints.Serialize()));
-            Assert.That(expected.beatmap.ControlPointInfo.EffectPoints.Serialize(), Is.EqualTo(actual.beatmap.ControlPointInfo.EffectPoints.Serialize()));
+            Assert.That(actual.beatmap.ControlPointInfo.TimingPoints.Serialize(), Is.EqualTo(expected.beatmap.ControlPointInfo.TimingPoints.Serialize()));
+            Assert.That(actual.beatmap.ControlPointInfo.EffectPoints.Serialize(), Is.EqualTo(expected.beatmap.ControlPointInfo.EffectPoints.Serialize()));
 
             // Check all hitobjects.
-            Assert.That(expected.beatmap.HitObjects.Serialize(), Is.EqualTo(actual.beatmap.HitObjects.Serialize()));
+            Assert.That(actual.beatmap.HitObjects.Serialize(), Is.EqualTo(expected.beatmap.HitObjects.Serialize()));
 
             // Check skin.
             Assert.IsTrue(areComboColoursEqual(expected.skin.Configuration, actual.skin.Configuration));

osu.Game.Tests/Editing/TimingSectionAdjustmentsTest.cs

@@ -0,0 +1,161 @@
+// 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.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Osu.Objects;
+using osu.Game.Screens.Edit.Timing;
+
+namespace osu.Game.Tests.Editing
+{
+    [TestFixture]
+    public class TimingSectionAdjustmentsTest
+    {
+        [Test]
+        public void TestOffsetAdjustment()
+        {
+            var controlPoints = new ControlPointInfo();
+
+            controlPoints.Add(100, new TimingControlPoint { BeatLength = 100 });
+            controlPoints.Add(50_000, new TimingControlPoint { BeatLength = 200 });
+            controlPoints.Add(100_000, new TimingControlPoint { BeatLength = 50 });
+
+            var beatmap = new Beatmap
+            {
+                ControlPointInfo = controlPoints,
+                HitObjects = new List<HitObject>
+                {
+                    new HitCircle { StartTime = 0 },
+                    new HitCircle { StartTime = 200 },
+                    new HitCircle { StartTime = 49_900 },
+                    new HitCircle { StartTime = 50_000 },
+                    new HitCircle { StartTime = 50_200 },
+                    new HitCircle { StartTime = 99_800 },
+                    new HitCircle { StartTime = 100_000 },
+                    new HitCircle { StartTime = 100_050 },
+                    new HitCircle { StartTime = 100_550 },
+                }
+            };
+
+            moveTimingPoint(beatmap, 100, -50);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(beatmap.HitObjects[0].StartTime, Is.EqualTo(-50));
+                Assert.That(beatmap.HitObjects[1].StartTime, Is.EqualTo(150));
+                Assert.That(beatmap.HitObjects[2].StartTime, Is.EqualTo(49_850));
+                Assert.That(beatmap.HitObjects[3].StartTime, Is.EqualTo(50_000));
+            });
+
+            moveTimingPoint(beatmap, 50_000, 1_000);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(beatmap.HitObjects[2].StartTime, Is.EqualTo(49_850));
+                Assert.That(beatmap.HitObjects[3].StartTime, Is.EqualTo(51_000));
+                Assert.That(beatmap.HitObjects[4].StartTime, Is.EqualTo(51_200));
+                Assert.That(beatmap.HitObjects[5].StartTime, Is.EqualTo(100_800));
+                Assert.That(beatmap.HitObjects[6].StartTime, Is.EqualTo(100_000));
+            });
+
+            moveTimingPoint(beatmap, 100_000, 10_000);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(beatmap.HitObjects[4].StartTime, Is.EqualTo(51_200));
+                Assert.That(beatmap.HitObjects[5].StartTime, Is.EqualTo(110_800));
+                Assert.That(beatmap.HitObjects[6].StartTime, Is.EqualTo(110_000));
+                Assert.That(beatmap.HitObjects[7].StartTime, Is.EqualTo(110_050));
+                Assert.That(beatmap.HitObjects[8].StartTime, Is.EqualTo(110_550));
+            });
+        }
+
+        [Test]
+        public void TestBPMAdjustment()
+        {
+            var controlPoints = new ControlPointInfo();
+
+            controlPoints.Add(100, new TimingControlPoint { BeatLength = 100 });
+            controlPoints.Add(50_000, new TimingControlPoint { BeatLength = 200 });
+            controlPoints.Add(100_000, new TimingControlPoint { BeatLength = 50 });
+
+            var beatmap = new Beatmap
+            {
+                ControlPointInfo = controlPoints,
+                HitObjects = new List<HitObject>
+                {
+                    new HitCircle { StartTime = 0 },
+                    new HitCircle { StartTime = 200 },
+                    new Spinner { StartTime = 500, EndTime = 1000 },
+                    new HitCircle { StartTime = 49_900 },
+                    new HitCircle { StartTime = 50_000 },
+                    new HitCircle { StartTime = 50_200 },
+                    new HitCircle { StartTime = 99_800 },
+                    new HitCircle { StartTime = 100_000 },
+                    new HitCircle { StartTime = 100_050 },
+                    new HitCircle { StartTime = 100_550 },
+                }
+            };
+
+            adjustBeatLength(beatmap, 100, 50);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(beatmap.HitObjects[0].StartTime, Is.EqualTo(50));
+                Assert.That(beatmap.HitObjects[1].StartTime, Is.EqualTo(150));
+                Assert.That(beatmap.HitObjects[2].StartTime, Is.EqualTo(300));
+                Assert.That(beatmap.HitObjects[2].GetEndTime(), Is.EqualTo(550));
+                Assert.That(beatmap.HitObjects[3].StartTime, Is.EqualTo(25_000));
+                Assert.That(beatmap.HitObjects[4].StartTime, Is.EqualTo(50_000));
+            });
+
+            adjustBeatLength(beatmap, 50_000, 400);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(beatmap.HitObjects[2].StartTime, Is.EqualTo(300));
+                Assert.That(beatmap.HitObjects[2].GetEndTime(), Is.EqualTo(550));
+                Assert.That(beatmap.HitObjects[3].StartTime, Is.EqualTo(25_000));
+                Assert.That(beatmap.HitObjects[4].StartTime, Is.EqualTo(50_000));
+                Assert.That(beatmap.HitObjects[5].StartTime, Is.EqualTo(50_400));
+                Assert.That(beatmap.HitObjects[6].StartTime, Is.EqualTo(149_600));
+                Assert.That(beatmap.HitObjects[7].StartTime, Is.EqualTo(100_000));
+            });
+
+            adjustBeatLength(beatmap, 100_000, 100);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(beatmap.HitObjects[5].StartTime, Is.EqualTo(50_400));
+                Assert.That(beatmap.HitObjects[6].StartTime, Is.EqualTo(199_200));
+                Assert.That(beatmap.HitObjects[7].StartTime, Is.EqualTo(100_000));
+                Assert.That(beatmap.HitObjects[8].StartTime, Is.EqualTo(100_100));
+                Assert.That(beatmap.HitObjects[9].StartTime, Is.EqualTo(101_100));
+            });
+        }
+
+        private static void moveTimingPoint(IBeatmap beatmap, double originalTime, double adjustment)
+        {
+            var controlPoints = beatmap.ControlPointInfo;
+            var controlPointGroup = controlPoints.GroupAt(originalTime);
+            var timingPoint = controlPointGroup.ControlPoints.OfType<TimingControlPoint>().Single();
+            controlPoints.RemoveGroup(controlPointGroup);
+            TimingSectionAdjustments.AdjustHitObjectOffset(beatmap, timingPoint, adjustment);
+            controlPoints.Add(originalTime - adjustment, timingPoint);
+        }
+
+        private static void adjustBeatLength(IBeatmap beatmap, double groupTime, double newBeatLength)
+        {
+            var controlPoints = beatmap.ControlPointInfo;
+            var controlPointGroup = controlPoints.GroupAt(groupTime);
+            var timingPoint = controlPointGroup.ControlPoints.OfType<TimingControlPoint>().Single();
+            double oldBeatLength = timingPoint.BeatLength;
+            timingPoint.BeatLength = newBeatLength;
+            TimingSectionAdjustments.SetHitObjectBPM(beatmap, timingPoint, oldBeatLength);
+        }
+    }
+}

osu.Game.Tests/Resources/mania-0-01-sv.osu

@@ -0,0 +1,39 @@
+osu file format v14
+
+[General]
+SampleSet: Normal
+StackLeniency: 0.7
+Mode: 3
+
+[Difficulty]
+HPDrainRate:3
+CircleSize:5
+OverallDifficulty:8
+ApproachRate:8
+SliderMultiplier:3.59999990463257
+SliderTickRate:2
+
+[TimingPoints]
+24,352.941176470588,4,1,1,100,1,0
+6376,-10000,4,1,1,100,0,0
+
+[HitObjects]
+51,192,24,1,0,0:0:0:0:
+153,192,200,1,0,0:0:0:0:
+358,192,376,1,0,0:0:0:0:
+460,192,553,1,0,0:0:0:0:
+460,192,729,128,0,1435:0:0:0:0:
+358,192,906,128,0,1612:0:0:0:0:
+256,192,1082,128,0,1788:0:0:0:0:
+153,192,1259,128,0,1965:0:0:0:0:
+51,192,1435,128,0,2141:0:0:0:0:
+51,192,2318,1,12,0:0:0:0:
+153,192,2318,1,4,0:0:0:0:
+256,192,2318,1,6,0:0:0:0:
+358,192,2318,1,14,0:0:0:0:
+460,192,2318,1,0,0:0:0:0:
+51,192,2494,128,0,2582:0:0:0:0:
+153,192,2494,128,14,2582:0:0:0:0:
+256,192,2494,128,6,2582:0:0:0:0:
+358,192,2494,128,4,2582:0:0:0:0:
+460,192,2494,128,12,2582:0:0:0:0:

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

@@ -155,7 +155,13 @@ namespace osu.Game.Tests.Visual.Gameplay
                 var api = (DummyAPIAccess)API;
 
                 api.Friends.Clear();
-                api.Friends.Add(friend);
+                api.Friends.Add(new APIRelation
+                {
+                    Mutual = true,
+                    RelationType = RelationType.Friend,
+                    TargetID = friend.OnlineID,
+                    TargetUser = friend
+                });
             });
 
             int playerNumber = 1;

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

@@ -1,8 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System;
 using System.Linq;
 using Moq;
@@ -36,15 +34,18 @@ namespace osu.Game.Tests.Visual.Multiplayer
         private readonly Bindable<BeatmapAvailability> beatmapAvailability = new Bindable<BeatmapAvailability>();
         private readonly Bindable<Room> room = new Bindable<Room>();
 
-        private MultiplayerRoom multiplayerRoom;
-        private MultiplayerRoomUser localUser;
-        private OngoingOperationTracker ongoingOperationTracker;
+        private MultiplayerRoom multiplayerRoom = null!;
+        private MultiplayerRoomUser localUser = null!;
+        private OngoingOperationTracker ongoingOperationTracker = null!;
 
-        private PopoverContainer content;
-        private MatchStartControl control;
+        private PopoverContainer content = null!;
+        private MatchStartControl control = null!;
 
         private OsuButton readyButton => control.ChildrenOfType<OsuButton>().Single();
 
+        [Cached(typeof(IBindable<PlaylistItem>))]
+        private readonly Bindable<PlaylistItem> currentItem = new Bindable<PlaylistItem>();
+
         protected override IReadOnlyDependencyContainer CreateChildDependencies(IReadOnlyDependencyContainer parent) =>
             new CachedModelDependencyContainer<Room>(base.CreateChildDependencies(parent)) { Model = { BindTarget = room } };
 
@@ -112,15 +113,15 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
                 beatmapAvailability.Value = BeatmapAvailability.LocallyAvailable();
 
-                var playlistItem = new PlaylistItem(Beatmap.Value.BeatmapInfo)
+                currentItem.Value = new PlaylistItem(Beatmap.Value.BeatmapInfo)
                 {
                     RulesetID = Beatmap.Value.BeatmapInfo.Ruleset.OnlineID
                 };
 
                 room.Value = new Room
                 {
-                    Playlist = { playlistItem },
-                    CurrentPlaylistItem = { Value = playlistItem }
+                    Playlist = { currentItem.Value },
+                    CurrentPlaylistItem = { BindTarget = currentItem }
                 };
 
                 localUser = new MultiplayerRoomUser(API.LocalUser.Value.Id) { User = API.LocalUser.Value };
@@ -129,7 +130,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
                 {
                     Playlist =
                     {
-                        TestMultiplayerClient.CreateMultiplayerPlaylistItem(playlistItem),
+                        TestMultiplayerClient.CreateMultiplayerPlaylistItem(currentItem.Value),
                     },
                     Users = { localUser },
                     Host = localUser,

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

@@ -1,15 +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 osu.Framework.Allocation;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Cursor;
+using osu.Game.Online.Rooms;
 using osu.Game.Screens.OnlinePlay.Multiplayer.Match;
 
 namespace osu.Game.Tests.Visual.Multiplayer
 {
     public partial class TestSceneMultiplayerMatchFooter : MultiplayerTestScene
     {
+        [Cached(typeof(IBindable<PlaylistItem>))]
+        private readonly Bindable<PlaylistItem> currentItem = new Bindable<PlaylistItem>();
+
         public override void SetUpSteps()
         {
             base.SetUpSteps();

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

@@ -6,6 +6,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using JetBrains.Annotations;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
@@ -15,6 +16,7 @@ using osu.Framework.Platform;
 using osu.Framework.Screens;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
+using osu.Game.Configuration;
 using osu.Game.Database;
 using osu.Game.Online.Rooms;
 using osu.Game.Overlays.Mods;
@@ -42,6 +44,9 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
         private Live<BeatmapSetInfo> importedBeatmapSet;
 
+        [Resolved]
+        private OsuConfigManager configManager { get; set; }
+
         [BackgroundDependencyLoader]
         private void load(GameHost host, AudioManager audio)
         {
@@ -57,10 +62,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
             Add(detachedBeatmapStore);
         }
 
-        public override void SetUpSteps()
+        private void setUp()
         {
-            base.SetUpSteps();
-
             AddStep("reset", () =>
             {
                 Ruleset.Value = new OsuRuleset().RulesetInfo;
@@ -75,6 +78,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [Test]
         public void TestSelectFreeMods()
         {
+            setUp();
+
             AddStep("set some freemods", () => songSelect.FreeMods.Value = new OsuRuleset().GetModsFor(ModType.Fun).ToArray());
             AddStep("set all freemods", () => songSelect.FreeMods.Value = new OsuRuleset().CreateAllMods().ToArray());
             AddStep("set no freemods", () => songSelect.FreeMods.Value = Array.Empty<Mod>());
@@ -85,6 +90,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
         {
             BeatmapInfo selectedBeatmap = null;
 
+            setUp();
+
             AddStep("change ruleset", () => Ruleset.Value = new TaikoRuleset().RulesetInfo);
             AddStep("select beatmap",
                 () => songSelect.Carousel.SelectBeatmap(selectedBeatmap = beatmaps.First(beatmap => beatmap.Ruleset.OnlineID == new TaikoRuleset().LegacyID)));
@@ -107,6 +114,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [TestCase(typeof(OsuModHidden), typeof(OsuModTraceable))] // Incompatible.
         public void TestAllowedModDeselectedWhenRequired(Type allowedMod, Type requiredMod)
         {
+            setUp();
+
             AddStep("change ruleset", () => Ruleset.Value = new OsuRuleset().RulesetInfo);
             AddStep($"select {allowedMod.ReadableName()} as allowed", () => songSelect.FreeMods.Value = new[] { (Mod)Activator.CreateInstance(allowedMod) });
             AddStep($"select {requiredMod.ReadableName()} as required", () => songSelect.Mods.Value = new[] { (Mod)Activator.CreateInstance(requiredMod) });
@@ -120,6 +129,30 @@ namespace osu.Game.Tests.Visual.Multiplayer
             assertFreeModNotShown(requiredMod);
         }
 
+        [Test]
+        public void TestChangeRulesetImmediatelyAfterLoadComplete()
+        {
+            AddStep("reset", () =>
+            {
+                configManager.SetValue(OsuSetting.ShowConvertedBeatmaps, false);
+                Beatmap.SetDefault();
+                SelectedMods.SetDefault();
+            });
+
+            AddStep("create song select", () =>
+            {
+                SelectedRoom.Value.Playlist.Single().RulesetID = 2;
+                songSelect = new TestMultiplayerMatchSongSelect(SelectedRoom.Value, SelectedRoom.Value.Playlist.Single());
+                songSelect.OnLoadComplete += _ => Ruleset.Value = new TaikoRuleset().RulesetInfo;
+                LoadScreen(songSelect);
+            });
+            AddUntilStep("wait for present", () => songSelect.IsCurrentScreen() && songSelect.BeatmapSetsLoaded);
+
+            AddStep("confirm selection", () => songSelect.FinaliseSelection());
+            AddAssert("beatmap is taiko", () => Beatmap.Value.BeatmapInfo.Ruleset.OnlineID, () => Is.EqualTo(1));
+            AddAssert("ruleset is taiko", () => Ruleset.Value.OnlineID, () => Is.EqualTo(1));
+        }
+
         private void assertFreeModNotShown(Type type)
         {
             AddAssert($"{type.ReadableName()} not displayed in freemod overlay",
@@ -138,8 +171,8 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
             public new BeatmapCarousel Carousel => base.Carousel;
 
-            public TestMultiplayerMatchSongSelect(Room room)
-                : base(room)
+            public TestMultiplayerMatchSongSelect(Room room, [CanBeNull] PlaylistItem itemToEdit = null)
+                : base(room, itemToEdit)
             {
             }
         }

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

@@ -1,13 +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.
 
-#nullable disable
-
 using System;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
+using osu.Framework.Bindables;
 using osu.Framework.Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Platform;
@@ -29,10 +28,13 @@ namespace osu.Game.Tests.Visual.Multiplayer
 {
     public partial class TestSceneMultiplayerPlaylist : MultiplayerTestScene
     {
-        private MultiplayerPlaylist list;
-        private BeatmapManager beatmaps;
-        private BeatmapSetInfo importedSet;
-        private BeatmapInfo importedBeatmap;
+        [Cached(typeof(IBindable<PlaylistItem>))]
+        private readonly Bindable<PlaylistItem> currentItem = new Bindable<PlaylistItem>();
+
+        private MultiplayerPlaylist list = null!;
+        private BeatmapManager beatmaps = null!;
+        private BeatmapSetInfo importedSet = null!;
+        private BeatmapInfo importedBeatmap = null!;
 
         [BackgroundDependencyLoader]
         private void load(GameHost host, AudioManager audio)
@@ -198,7 +200,7 @@ namespace osu.Game.Tests.Visual.Multiplayer
             addItemStep();
             addItemStep();
 
-            DrawableRoomPlaylistItem[] drawableItems = null;
+            DrawableRoomPlaylistItem[] drawableItems = null!;
             AddStep("get drawable items", () => drawableItems = this.ChildrenOfType<DrawableRoomPlaylistItem>().ToArray());
 
             // Add 1 item for another user.

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

@@ -1,8 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
@@ -28,13 +26,14 @@ namespace osu.Game.Tests.Visual.Multiplayer
 {
     public partial class TestSceneMultiplayerSpectateButton : MultiplayerTestScene
     {
-        private MultiplayerSpectateButton spectateButton;
-        private MatchStartControl startControl;
+        [Cached(typeof(IBindable<PlaylistItem>))]
+        private readonly Bindable<PlaylistItem> currentItem = new Bindable<PlaylistItem>();
 
-        private readonly Bindable<PlaylistItem> selectedItem = new Bindable<PlaylistItem>();
+        private MultiplayerSpectateButton spectateButton = null!;
+        private MatchStartControl startControl = null!;
 
-        private BeatmapSetInfo importedSet;
-        private BeatmapManager beatmaps;
+        private BeatmapSetInfo importedSet = null!;
+        private BeatmapManager beatmaps = null!;
 
         [BackgroundDependencyLoader]
         private void load(GameHost host, AudioManager audio)
@@ -52,14 +51,12 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
             AddStep("create button", () =>
             {
-                AvailabilityTracker.SelectedItem.BindTo(selectedItem);
+                AvailabilityTracker.SelectedItem.BindTo(currentItem);
 
                 importedSet = beatmaps.GetAllUsableBeatmapSets().First();
                 Beatmap.Value = beatmaps.GetWorkingBeatmap(importedSet.Beatmaps.First());
-                selectedItem.Value = new PlaylistItem(Beatmap.Value.BeatmapInfo)
-                {
-                    RulesetID = Beatmap.Value.BeatmapInfo.Ruleset.OnlineID,
-                };
+
+                currentItem.Value = SelectedRoom.Value.Playlist.First();
 
                 Child = new PopoverContainer
                 {

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

@@ -30,14 +30,20 @@ namespace osu.Game.Tests.Visual.Online
                 if (supportLevel > 3)
                     supportLevel = 0;
 
-                ((DummyAPIAccess)API).Friends.Add(new APIUser
+                ((DummyAPIAccess)API).Friends.Add(new APIRelation
                 {
-                    Username = @"peppy",
-                    Id = 2,
-                    Colour = "99EB47",
-                    CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
-                    IsSupporter = supportLevel > 0,
-                    SupportLevel = supportLevel
+                    TargetID = 2,
+                    RelationType = RelationType.Friend,
+                    Mutual = true,
+                    TargetUser = new APIUser
+                    {
+                        Username = @"peppy",
+                        Id = 2,
+                        Colour = "99EB47",
+                        CoverUrl = @"https://osu.ppy.sh/images/headers/profile-covers/c3.jpg",
+                        IsSupporter = supportLevel > 0,
+                        SupportLevel = supportLevel
+                    }
                 });
             }
         }

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

@@ -3,15 +3,20 @@
 
 using System;
 using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
 using osu.Framework.Testing;
 using osu.Game.Configuration;
 using osu.Game.Graphics.Containers;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Profile;
+using osu.Game.Overlays.Profile.Header.Components;
 using osu.Game.Rulesets.Osu;
 using osu.Game.Users;
 
@@ -22,6 +27,10 @@ namespace osu.Game.Tests.Visual.Online
         [Cached]
         private readonly OverlayColourProvider colourProvider = new OverlayColourProvider(OverlayColourScheme.Green);
 
+        private DummyAPIAccess dummyAPI => (DummyAPIAccess)API;
+
+        private readonly ManualResetEventSlim requestLock = new ManualResetEventSlim();
+
         [Resolved]
         private OsuConfigManager configManager { get; set; } = null!;
 
@@ -400,5 +409,97 @@ namespace osu.Game.Tests.Visual.Online
                 }
             }, new OsuRuleset().RulesetInfo));
         }
+
+        private APIUser nonFriend => new APIUser
+        {
+            Id = 727,
+            Username = "Whatever",
+        };
+
+        [Test]
+        public void TestAddFriend()
+        {
+            AddStep("Setup request", () =>
+            {
+                requestLock.Reset();
+
+                dummyAPI.HandleRequest = request =>
+                {
+                    if (request is not AddFriendRequest req)
+                        return false;
+
+                    if (req.TargetId != nonFriend.OnlineID)
+                        return false;
+
+                    var apiRelation = new APIRelation
+                    {
+                        TargetID = nonFriend.OnlineID,
+                        Mutual = true,
+                        RelationType = RelationType.Friend,
+                        TargetUser = nonFriend
+                    };
+
+                    Task.Run(() =>
+                    {
+                        requestLock.Wait(3000);
+                        dummyAPI.Friends.Add(apiRelation);
+                        req.TriggerSuccess(new AddFriendResponse
+                        {
+                            UserRelation = apiRelation
+                        });
+                    });
+
+                    return true;
+                };
+            });
+            AddStep("clear friend list", () => dummyAPI.Friends.Clear());
+            AddStep("Show non-friend user", () => header.User.Value = new UserProfileData(nonFriend, new OsuRuleset().RulesetInfo));
+            AddStep("Click followers button", () => this.ChildrenOfType<FollowersButton>().First().TriggerClick());
+            AddStep("Complete request", () => requestLock.Set());
+            AddUntilStep("Friend added", () => API.Friends.Any(f => f.TargetID == nonFriend.OnlineID));
+        }
+
+        [Test]
+        public void TestAddFriendNonMutual()
+        {
+            AddStep("Setup request", () =>
+            {
+                requestLock.Reset();
+
+                dummyAPI.HandleRequest = request =>
+                {
+                    if (request is not AddFriendRequest req)
+                        return false;
+
+                    if (req.TargetId != nonFriend.OnlineID)
+                        return false;
+
+                    var apiRelation = new APIRelation
+                    {
+                        TargetID = nonFriend.OnlineID,
+                        Mutual = false,
+                        RelationType = RelationType.Friend,
+                        TargetUser = nonFriend
+                    };
+
+                    Task.Run(() =>
+                    {
+                        requestLock.Wait(3000);
+                        dummyAPI.Friends.Add(apiRelation);
+                        req.TriggerSuccess(new AddFriendResponse
+                        {
+                            UserRelation = apiRelation
+                        });
+                    });
+
+                    return true;
+                };
+            });
+            AddStep("clear friend list", () => dummyAPI.Friends.Clear());
+            AddStep("Show non-friend user", () => header.User.Value = new UserProfileData(nonFriend, new OsuRuleset().RulesetInfo));
+            AddStep("Click followers button", () => this.ChildrenOfType<FollowersButton>().First().TriggerClick());
+            AddStep("Complete request", () => requestLock.Set());
+            AddUntilStep("Friend added", () => API.Friends.Any(f => f.TargetID == nonFriend.OnlineID));
+        }
     }
 }

osu.Game.Tests/Visual/Settings/TestSceneKeyBindingPanel.cs

@@ -414,11 +414,7 @@ namespace osu.Game.Tests.Visual.Settings
             });
             AddStep("move mouse to centre", () => InputManager.MoveMouseTo(panel.ScreenSpaceDrawQuad.Centre));
             scrollToAndStartBinding("Left (centre)");
-            AddStep("clear binding", () =>
-            {
-                var row = panel.ChildrenOfType<KeyBindingRow>().First(r => r.ChildrenOfType<OsuSpriteText>().Any(s => s.Text.ToString() == "Left (centre)"));
-                row.ChildrenOfType<KeyBindingRow.ClearButton>().Single().TriggerClick();
-            });
+            clearBinding();
             scrollToAndStartBinding("Left (rim)");
             AddStep("bind M1", () => InputManager.Click(MouseButton.Left));
 
@@ -431,6 +427,45 @@ namespace osu.Game.Tests.Visual.Settings
             AddUntilStep("conflict popover not shown", () => panel.ChildrenOfType<KeyBindingConflictPopover>().SingleOrDefault(), () => Is.Null);
         }
 
+        [Test]
+        public void TestResettingRowCannotConflictWithItself()
+        {
+            AddStep("reset taiko section to default", () =>
+            {
+                var section = panel.ChildrenOfType<VariantBindingsSubsection>().First(section => new TaikoRuleset().RulesetInfo.Equals(section.Ruleset));
+                section.ChildrenOfType<ResetButton>().Single().TriggerClick();
+            });
+            AddStep("move mouse to centre", () => InputManager.MoveMouseTo(panel.ScreenSpaceDrawQuad.Centre));
+
+            scrollToAndStartBinding("Left (centre)");
+            clearBinding();
+            scrollToAndStartBinding("Left (centre)", 1);
+            clearBinding();
+
+            scrollToAndStartBinding("Left (centre)");
+            AddStep("bind F", () => InputManager.Key(Key.F));
+            scrollToAndStartBinding("Left (centre)", 1);
+            AddStep("bind M1", () => InputManager.Click(MouseButton.Left));
+
+            AddStep("revert row to default", () =>
+            {
+                var row = panel.ChildrenOfType<KeyBindingRow>().First(r => r.ChildrenOfType<OsuSpriteText>().Any(s => s.Text.ToString() == "Left (centre)"));
+                InputManager.MoveMouseTo(row.ChildrenOfType<RevertToDefaultButton<bool>>().Single());
+                InputManager.Click(MouseButton.Left);
+            });
+            AddWaitStep("wait a bit", 3);
+            AddUntilStep("conflict popover not shown", () => panel.ChildrenOfType<KeyBindingConflictPopover>().SingleOrDefault(), () => Is.Null);
+        }
+
+        private void clearBinding()
+        {
+            AddStep("clear binding", () =>
+            {
+                var row = panel.ChildrenOfType<KeyBindingRow>().First(r => r.ChildrenOfType<OsuSpriteText>().Any(s => s.Text.ToString() == "Left (centre)"));
+                row.ChildrenOfType<KeyBindingRow.ClearButton>().Single().TriggerClick();
+            });
+        }
+
         private void checkBinding(string name, string keyName)
         {
             AddAssert($"Check {name} is bound to {keyName}", () =>
@@ -442,23 +477,23 @@ namespace osu.Game.Tests.Visual.Settings
             }, () => Is.EqualTo(keyName));
         }
 
-        private void scrollToAndStartBinding(string name)
+        private void scrollToAndStartBinding(string name, int bindingIndex = 0)
         {
-            KeyBindingRow.KeyButton firstButton = null;
+            KeyBindingRow.KeyButton targetButton = null;
 
             AddStep($"Scroll to {name}", () =>
             {
                 var firstRow = panel.ChildrenOfType<KeyBindingRow>().First(r => r.ChildrenOfType<OsuSpriteText>().Any(s => s.Text.ToString() == name));
-                firstButton = firstRow.ChildrenOfType<KeyBindingRow.KeyButton>().First();
+                targetButton = firstRow.ChildrenOfType<KeyBindingRow.KeyButton>().ElementAt(bindingIndex);
 
-                panel.ChildrenOfType<SettingsPanel.SettingsSectionsContainer>().First().ScrollTo(firstButton);
+                panel.ChildrenOfType<SettingsPanel.SettingsSectionsContainer>().First().ScrollTo(targetButton);
             });
 
             AddWaitStep("wait for scroll", 5);
 
             AddStep("click to bind", () =>
             {
-                InputManager.MoveMouseTo(firstButton);
+                InputManager.MoveMouseTo(targetButton);
                 InputManager.Click(MouseButton.Left);
             });
         }

osu.Game.Tests/Visual/SongSelect/TestSceneBeatmapRecommendations.cs

@@ -10,9 +10,12 @@ using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.IEnumerableExtensions;
+using osu.Framework.Platform;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
+using osu.Game.Database;
 using osu.Game.Extensions;
+using osu.Game.Online.API;
 using osu.Game.Rulesets;
 using osu.Game.Rulesets.Catch;
 using osu.Game.Rulesets.Mania;
@@ -191,8 +194,39 @@ namespace osu.Game.Tests.Visual.SongSelect
         {
             AddStep("present beatmap", () => Game.PresentBeatmap(getImport()));
 
-            AddUntilStep("wait for song select", () => Game.ScreenStack.CurrentScreen is Screens.Select.SongSelect);
+            AddUntilStep("wait for song select", () => Game.ScreenStack.CurrentScreen is Screens.Select.SongSelect select && select.BeatmapSetsLoaded);
             AddUntilStep("recommended beatmap displayed", () => Game.Beatmap.Value.BeatmapInfo.MatchesOnlineID(getImport().Beatmaps[expectedDiff - 1]));
         }
+
+        protected override TestOsuGame CreateTestGame() => new NoBeatmapUpdateGame(LocalStorage, API);
+
+        private partial class NoBeatmapUpdateGame : TestOsuGame
+        {
+            public NoBeatmapUpdateGame(Storage storage, IAPIProvider api, string[] args = null)
+                : base(storage, api, args)
+            {
+            }
+
+            protected override IBeatmapUpdater CreateBeatmapUpdater() => new TestBeatmapUpdater();
+
+            private class TestBeatmapUpdater : IBeatmapUpdater
+            {
+                public void Queue(Live<BeatmapSetInfo> beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst)
+                {
+                }
+
+                public void Process(BeatmapSetInfo beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst)
+                {
+                }
+
+                public void ProcessObjectCounts(BeatmapInfo beatmapInfo, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst)
+                {
+                }
+
+                public void Dispose()
+                {
+                }
+            }
+        }
     }
 }

osu.Game.Tests/Visual/UserInterface/TestSceneBeatmapAttributeText.cs

@@ -1,14 +1,28 @@
 // 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 Newtonsoft.Json;
 using NUnit.Framework;
+using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Localisation;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps;
+using osu.Game.Configuration;
 using osu.Game.Models;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Difficulty;
+using osu.Game.Rulesets.Difficulty.Preprocessing;
+using osu.Game.Rulesets.Difficulty.Skills;
+using osu.Game.Rulesets.Mods;
 using osu.Game.Rulesets.Osu;
+using osu.Game.Rulesets.Osu.Mods;
+using osu.Game.Rulesets.UI;
+using osu.Game.Scoring;
 using osu.Game.Skinning.Components;
 using osu.Game.Tests.Beatmaps;
 
@@ -30,6 +44,8 @@ namespace osu.Game.Tests.Visual.UserInterface
         [SetUp]
         public void Setup() => Schedule(() =>
         {
+            SelectedMods.SetDefault();
+            Ruleset.Value = new OsuRuleset().RulesetInfo;
             Beatmap.Value = CreateWorkingBeatmap(new TestBeatmap(new OsuRuleset().RulesetInfo)
             {
                 BeatmapInfo =
@@ -93,6 +109,126 @@ namespace osu.Game.Tests.Visual.UserInterface
             AddAssert("check new title", getText, () => Is.EqualTo("Title: Another"));
         }
 
+        [Test]
+        public void TestWithMods()
+        {
+            AddStep("set beatmap", () => Beatmap.Value = CreateWorkingBeatmap(new TestBeatmap(new OsuRuleset().RulesetInfo)
+            {
+                BeatmapInfo =
+                {
+                    BPM = 100,
+                    Length = 30000,
+                    Difficulty =
+                    {
+                        ApproachRate = 10,
+                        CircleSize = 9
+                    }
+                }
+            }));
+
+            test(BeatmapAttribute.BPM, new OsuModDoubleTime(), "BPM: 100.00", "BPM: 150.00");
+            test(BeatmapAttribute.Length, new OsuModDoubleTime(), "Length: 00:30", "Length: 00:20");
+            test(BeatmapAttribute.ApproachRate, new OsuModDoubleTime(), "Approach Rate: 10.00", "Approach Rate: 11.00");
+            test(BeatmapAttribute.CircleSize, new OsuModHardRock(), "Circle Size: 9.00", "Circle Size: 10.00");
+
+            void test(BeatmapAttribute attribute, Mod mod, string before, string after)
+            {
+                AddStep($"set attribute: {attribute}", () => text.Attribute.Value = attribute);
+                AddAssert("check text is correct", getText, () => Is.EqualTo(before));
+
+                AddStep("add DT mod", () => SelectedMods.Value = new[] { mod });
+                AddAssert("check text is correct", getText, () => Is.EqualTo(after));
+                AddStep("clear mods", () => SelectedMods.SetDefault());
+            }
+        }
+
+        [Test]
+        public void TestStarRating()
+        {
+            AddStep("set test ruleset", () => Ruleset.Value = new TestRuleset().RulesetInfo);
+            AddStep("set star rating attribute", () => text.Attribute.Value = BeatmapAttribute.StarRating);
+            AddAssert("check star rating is 0", getText, () => Is.EqualTo("Star Rating: 0.00"));
+
+            // Adding mod
+            TestMod mod = null!;
+            AddStep("add mod with difficulty 1", () => SelectedMods.Value = new[] { mod = new TestMod { Difficulty = { Value = 1 } } });
+            AddUntilStep("check star rating is 1", getText, () => Is.EqualTo("Star Rating: 1.00"));
+
+            // Changing mod setting
+            AddStep("change mod difficulty to 2", () => mod.Difficulty.Value = 2);
+            AddUntilStep("check star rating is 2", getText, () => Is.EqualTo("Star Rating: 2.00"));
+        }
+
         private string getText() => text.ChildrenOfType<SpriteText>().Single().Text.ToString();
+
+        private class TestRuleset : Ruleset
+        {
+            public override IEnumerable<Mod> GetModsFor(ModType type) => new[]
+            {
+                new TestMod()
+            };
+
+            public override IBeatmapConverter CreateBeatmapConverter(IBeatmap beatmap)
+                => new OsuRuleset().CreateBeatmapConverter(beatmap);
+
+            public override DifficultyCalculator CreateDifficultyCalculator(IWorkingBeatmap beatmap)
+                => new TestDifficultyCalculator(new TestRuleset().RulesetInfo, beatmap);
+
+            public override PerformanceCalculator CreatePerformanceCalculator()
+                => new TestPerformanceCalculator(new TestRuleset());
+
+            public override DrawableRuleset CreateDrawableRulesetWith(IBeatmap beatmap, IReadOnlyList<Mod>? mods = null)
+                => null!;
+
+            public override string Description => string.Empty;
+            public override string ShortName => string.Empty;
+        }
+
+        private class TestDifficultyCalculator : DifficultyCalculator
+        {
+            public TestDifficultyCalculator(IRulesetInfo ruleset, IWorkingBeatmap beatmap)
+                : base(ruleset, beatmap)
+            {
+            }
+
+            protected override DifficultyAttributes CreateDifficultyAttributes(IBeatmap beatmap, Mod[] mods, Skill[] skills, double clockRate)
+                => new DifficultyAttributes(mods, mods.OfType<TestMod>().SingleOrDefault()?.Difficulty.Value ?? 0);
+
+            protected override IEnumerable<DifficultyHitObject> CreateDifficultyHitObjects(IBeatmap beatmap, double clockRate)
+                => Array.Empty<DifficultyHitObject>();
+
+            protected override Skill[] CreateSkills(IBeatmap beatmap, Mod[] mods, double clockRate)
+                => Array.Empty<Skill>();
+        }
+
+        private class TestPerformanceCalculator : PerformanceCalculator
+        {
+            public TestPerformanceCalculator(Ruleset ruleset)
+                : base(ruleset)
+            {
+            }
+
+            protected override PerformanceAttributes CreatePerformanceAttributes(ScoreInfo score, DifficultyAttributes attributes)
+                => new PerformanceAttributes { Total = score.Mods.OfType<TestMod>().SingleOrDefault()?.Performance.Value ?? 0 };
+        }
+
+        private class TestMod : Mod
+        {
+            [SettingSource("difficulty")]
+            public BindableDouble Difficulty { get; } = new BindableDouble(0);
+
+            [SettingSource("performance")]
+            public BindableDouble Performance { get; } = new BindableDouble(0);
+
+            [JsonConstructor]
+            public TestMod()
+            {
+            }
+
+            public override string Name => string.Empty;
+            public override LocalisableString Description => string.Empty;
+            public override double ScoreMultiplier => 1.0;
+            public override string Acronym => "Test";
+        }
     }
 }

osu.Game/Beatmaps/BeatmapOnlineChangeIngest.cs

@@ -13,11 +13,11 @@ namespace osu.Game.Beatmaps
     /// </summary>
     public partial class BeatmapOnlineChangeIngest : Component
     {
-        private readonly BeatmapUpdater beatmapUpdater;
+        private readonly IBeatmapUpdater beatmapUpdater;
         private readonly RealmAccess realm;
         private readonly MetadataClient metadataClient;
 
-        public BeatmapOnlineChangeIngest(BeatmapUpdater beatmapUpdater, RealmAccess realm, MetadataClient metadataClient)
+        public BeatmapOnlineChangeIngest(IBeatmapUpdater beatmapUpdater, RealmAccess realm, MetadataClient metadataClient)
         {
             this.beatmapUpdater = beatmapUpdater;
             this.realm = realm;

osu.Game/Beatmaps/BeatmapUpdater.cs

@@ -1,7 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading.Tasks;
@@ -15,10 +14,7 @@ using osu.Game.Rulesets.Objects.Types;
 
 namespace osu.Game.Beatmaps
 {
-    /// <summary>
-    /// Handles all processing required to ensure a local beatmap is in a consistent state with any changes.
-    /// </summary>
-    public class BeatmapUpdater : IDisposable
+    public class BeatmapUpdater : IBeatmapUpdater
     {
         private readonly IWorkingBeatmapCache workingBeatmapCache;
 
@@ -38,11 +34,6 @@ namespace osu.Game.Beatmaps
             metadataLookup = new BeatmapUpdaterMetadataLookup(api, storage);
         }
 
-        /// <summary>
-        /// Queue a beatmap for background processing.
-        /// </summary>
-        /// <param name="beatmapSet">The managed beatmap set to update. A transaction will be opened to apply changes.</param>
-        /// <param name="lookupScope">The preferred scope to use for metadata lookup.</param>
         public void Queue(Live<BeatmapSetInfo> beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst)
         {
             Logger.Log($"Queueing change for local beatmap {beatmapSet}");
@@ -50,55 +41,56 @@ namespace osu.Game.Beatmaps
                 updateScheduler);
         }
 
-        /// <summary>
-        /// Run all processing on a beatmap immediately.
-        /// </summary>
-        /// <param name="beatmapSet">The managed beatmap set to update. A transaction will be opened to apply changes.</param>
-        /// <param name="lookupScope">The preferred scope to use for metadata lookup.</param>
-        public void Process(BeatmapSetInfo beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst) => beatmapSet.Realm!.Write(_ =>
+        public void Process(BeatmapSetInfo beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst)
         {
-            // Before we use below, we want to invalidate.
-            workingBeatmapCache.Invalidate(beatmapSet);
-
-            if (lookupScope != MetadataLookupScope.None)
-                metadataLookup.Update(beatmapSet, lookupScope == MetadataLookupScope.OnlineFirst);
-
-            foreach (var beatmap in beatmapSet.Beatmaps)
+            beatmapSet.Realm!.Write(_ =>
             {
-                difficultyCache.Invalidate(beatmap);
+                // Before we use below, we want to invalidate.
+                workingBeatmapCache.Invalidate(beatmapSet);
 
-                var working = workingBeatmapCache.GetWorkingBeatmap(beatmap);
-                var ruleset = working.BeatmapInfo.Ruleset.CreateInstance();
+                if (lookupScope != MetadataLookupScope.None)
+                    metadataLookup.Update(beatmapSet, lookupScope == MetadataLookupScope.OnlineFirst);
 
-                Debug.Assert(ruleset != null);
+                foreach (var beatmap in beatmapSet.Beatmaps)
+                {
+                    difficultyCache.Invalidate(beatmap);
 
-                var calculator = ruleset.CreateDifficultyCalculator(working);
+                    var working = workingBeatmapCache.GetWorkingBeatmap(beatmap);
+                    var ruleset = working.BeatmapInfo.Ruleset.CreateInstance();
 
-                beatmap.StarRating = calculator.Calculate().StarRating;
-                beatmap.Length = working.Beatmap.CalculatePlayableLength();
-                beatmap.BPM = 60000 / working.Beatmap.GetMostCommonBeatLength();
-                beatmap.EndTimeObjectCount = working.Beatmap.HitObjects.Count(h => h is IHasDuration);
-                beatmap.TotalObjectCount = working.Beatmap.HitObjects.Count;
-            }
+                    Debug.Assert(ruleset != null);
 
-            // And invalidate again afterwards as re-fetching the most up-to-date database metadata will be required.
-            workingBeatmapCache.Invalidate(beatmapSet);
-        });
+                    var calculator = ruleset.CreateDifficultyCalculator(working);
 
-        public void ProcessObjectCounts(BeatmapInfo beatmapInfo, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst) => beatmapInfo.Realm!.Write(_ =>
+                    beatmap.StarRating = calculator.Calculate().StarRating;
+                    beatmap.Length = working.Beatmap.CalculatePlayableLength();
+                    beatmap.BPM = 60000 / working.Beatmap.GetMostCommonBeatLength();
+                    beatmap.EndTimeObjectCount = working.Beatmap.HitObjects.Count(h => h is IHasDuration);
+                    beatmap.TotalObjectCount = working.Beatmap.HitObjects.Count;
+                }
+
+                // And invalidate again afterwards as re-fetching the most up-to-date database metadata will be required.
+                workingBeatmapCache.Invalidate(beatmapSet);
+            });
+        }
+
+        public void ProcessObjectCounts(BeatmapInfo beatmapInfo, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst)
         {
-            // Before we use below, we want to invalidate.
-            workingBeatmapCache.Invalidate(beatmapInfo);
+            beatmapInfo.Realm!.Write(_ =>
+            {
+                // Before we use below, we want to invalidate.
+                workingBeatmapCache.Invalidate(beatmapInfo);
 
-            var working = workingBeatmapCache.GetWorkingBeatmap(beatmapInfo);
-            var beatmap = working.Beatmap;
+                var working = workingBeatmapCache.GetWorkingBeatmap(beatmapInfo);
+                var beatmap = working.Beatmap;
 
-            beatmapInfo.EndTimeObjectCount = beatmap.HitObjects.Count(h => h is IHasDuration);
-            beatmapInfo.TotalObjectCount = beatmap.HitObjects.Count;
+                beatmapInfo.EndTimeObjectCount = beatmap.HitObjects.Count(h => h is IHasDuration);
+                beatmapInfo.TotalObjectCount = beatmap.HitObjects.Count;
 
-            // And invalidate again afterwards as re-fetching the most up-to-date database metadata will be required.
-            workingBeatmapCache.Invalidate(beatmapInfo);
-        });
+                // And invalidate again afterwards as re-fetching the most up-to-date database metadata will be required.
+                workingBeatmapCache.Invalidate(beatmapInfo);
+            });
+        }
 
         #region Implementation of IDisposable
 

osu.Game/Beatmaps/Formats/LegacyBeatmapEncoder.cs

@@ -183,7 +183,17 @@ namespace osu.Game.Beatmaps.Formats
             if (scrollSpeedEncodedAsSliderVelocity)
             {
                 foreach (var point in legacyControlPoints.EffectPoints)
-                    legacyControlPoints.Add(point.Time, new DifficultyControlPoint { SliderVelocity = point.ScrollSpeed });
+                {
+                    legacyControlPoints.Add(point.Time, new DifficultyControlPoint
+                    {
+                        SliderVelocityBindable =
+                        {
+                            MinValue = point.ScrollSpeedBindable.MinValue,
+                            MaxValue = point.ScrollSpeedBindable.MaxValue,
+                            Value = point.ScrollSpeedBindable.Value,
+                        }
+                    });
+                }
             }
 
             LegacyControlPointProperties lastControlPointProperties = new LegacyControlPointProperties();

osu.Game/Beatmaps/IBeatmapUpdater.cs

@@ -0,0 +1,35 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Game.Database;
+
+namespace osu.Game.Beatmaps
+{
+    /// <summary>
+    /// Handles all processing required to ensure a local beatmap is in a consistent state with any changes.
+    /// </summary>
+    public interface IBeatmapUpdater : IDisposable
+    {
+        /// <summary>
+        /// Queue a beatmap for background processing.
+        /// </summary>
+        /// <param name="beatmapSet">The managed beatmap set to update. A transaction will be opened to apply changes.</param>
+        /// <param name="lookupScope">The preferred scope to use for metadata lookup.</param>
+        void Queue(Live<BeatmapSetInfo> beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst);
+
+        /// <summary>
+        /// Run all processing on a beatmap immediately.
+        /// </summary>
+        /// <param name="beatmapSet">The managed beatmap set to update. A transaction will be opened to apply changes.</param>
+        /// <param name="lookupScope">The preferred scope to use for metadata lookup.</param>
+        void Process(BeatmapSetInfo beatmapSet, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst);
+
+        /// <summary>
+        /// Runs a subset of processing focused on updating any cached beatmap object counts.
+        /// </summary>
+        /// <param name="beatmapInfo">The managed beatmap to update. A transaction will be opened to apply changes.</param>
+        /// <param name="lookupScope">The preferred scope to use for metadata lookup.</param>
+        void ProcessObjectCounts(BeatmapInfo beatmapInfo, MetadataLookupScope lookupScope = MetadataLookupScope.LocalCacheFirst);
+    }
+}

osu.Game/Configuration/OsuConfigManager.cs

@@ -17,6 +17,7 @@ using osu.Game.Localisation;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Mods.Input;
 using osu.Game.Rulesets.Scoring;
+using osu.Game.Screens.Edit.Compose.Components;
 using osu.Game.Screens.OnlinePlay.Lounge.Components;
 using osu.Game.Screens.Select;
 using osu.Game.Screens.Select.Filter;
@@ -193,6 +194,9 @@ namespace osu.Game.Configuration
             SetDefault(OsuSetting.EditorAutoSeekOnPlacement, true);
             SetDefault(OsuSetting.EditorLimitedDistanceSnap, false);
             SetDefault(OsuSetting.EditorShowSpeedChanges, false);
+            SetDefault(OsuSetting.EditorScaleOrigin, EditorOrigin.GridCentre);
+            SetDefault(OsuSetting.EditorRotationOrigin, EditorOrigin.GridCentre);
+            SetDefault(OsuSetting.EditorAdjustExistingObjectsOnTimingChanges, true);
 
             SetDefault(OsuSetting.HideCountryFlags, false);
 
@@ -204,6 +208,7 @@ namespace osu.Game.Configuration
             SetDefault<UserStatus?>(OsuSetting.UserOnlineStatus, null);
 
             SetDefault(OsuSetting.EditorTimelineShowTimingChanges, true);
+            SetDefault(OsuSetting.EditorTimelineShowBreaks, true);
             SetDefault(OsuSetting.EditorTimelineShowTicks, true);
 
             SetDefault(OsuSetting.EditorContractSidebars, false);
@@ -434,6 +439,10 @@ namespace osu.Game.Configuration
         EditorTimelineShowTimingChanges,
         EditorTimelineShowTicks,
         AlwaysShowHoldForMenuButton,
-        EditorContractSidebars
+        EditorContractSidebars,
+        EditorScaleOrigin,
+        EditorRotationOrigin,
+        EditorTimelineShowBreaks,
+        EditorAdjustExistingObjectsOnTimingChanges,
     }
 }

osu.Game/Database/BackgroundDataStoreProcessor.cs

@@ -46,7 +46,7 @@ namespace osu.Game.Database
         private RealmAccess realmAccess { get; set; } = null!;
 
         [Resolved]
-        private BeatmapUpdater beatmapUpdater { get; set; } = null!;
+        private IBeatmapUpdater beatmapUpdater { get; set; } = null!;
 
         [Resolved]
         private IBindable<WorkingBeatmap> gameBeatmap { get; set; } = null!;

osu.Game/Graphics/UserInterface/ExternalLinkButton.cs

@@ -10,6 +10,7 @@ using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
+using osu.Game.Localisation;
 using osuTK;
 using osuTK.Graphics;
 
@@ -77,7 +78,7 @@ namespace osu.Game.Graphics.UserInterface
                 if (Link != null)
                 {
                     items.Add(new OsuMenuItem("Open", MenuItemType.Highlighted, () => game?.OpenUrlExternally(Link)));
-                    items.Add(new OsuMenuItem("Copy link", MenuItemType.Standard, copyUrl));
+                    items.Add(new OsuMenuItem(CommonStrings.CopyLink, MenuItemType.Standard, copyUrl));
                 }
 
                 return items.ToArray();

osu.Game/Localisation/CommonStrings.cs

@@ -174,6 +174,11 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString General => new TranslatableString(getKey(@"general"), @"General");
 
+        /// <summary>
+        /// "Copy link"
+        /// </summary>
+        public static LocalisableString CopyLink => new TranslatableString(getKey(@"copy_link"), @"Copy link");
+
         private static string getKey(string key) => $@"{prefix}:{key}";
     }
-}
+}

osu.Game/Localisation/EditorStrings.cs

@@ -39,6 +39,11 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString SetPreviewPointToCurrent => new TranslatableString(getKey(@"set_preview_point_to_current"), @"Set preview point to current time");
 
+        /// <summary>
+        /// "Move already placed objects when changing timing"
+        /// </summary>
+        public static LocalisableString AdjustExistingObjectsOnTimingChanges => new TranslatableString(getKey(@"adjust_existing_objects_on_timing_changes"), @"Move already placed objects when changing timing");
+
         /// <summary>
         /// "For editing (.olz)"
         /// </summary>
@@ -139,6 +144,11 @@ namespace osu.Game.Localisation
         /// </summary>
         public static LocalisableString TimelineShowTimingChanges => new TranslatableString(getKey(@"timeline_show_timing_changes"), @"Show timing changes");
 
+        /// <summary>
+        /// "Show breaks"
+        /// </summary>
+        public static LocalisableString TimelineShowBreaks => new TranslatableString(getKey(@"timeline_show_breaks"), @"Show breaks");
+
         /// <summary>
         /// "Show ticks"
         /// </summary>

osu.Game/Localisation/PlayerLoaderStrings.cs

@@ -26,10 +26,10 @@ namespace osu.Game.Localisation
 
         /// <summary>
         /// "No performance points will be awarded.
-        /// Leaderboards may be reset by the beatmap creator."
+        /// Leaderboards may be reset."
         /// </summary>
         public static LocalisableString LovedBeatmapDisclaimerContent => new TranslatableString(getKey(@"loved_beatmap_disclaimer_content"), @"No performance points will be awarded.
-Leaderboards may be reset by the beatmap creator.");
+Leaderboards may be reset.");
 
         /// <summary>
         /// "This beatmap is qualified"

osu.Game/Online/API/APIAccess.cs

@@ -57,7 +57,7 @@ namespace osu.Game.Online.API
         private string password;
 
         public IBindable<APIUser> LocalUser => localUser;
-        public IBindableList<APIUser> Friends => friends;
+        public IBindableList<APIRelation> Friends => friends;
         public IBindable<UserActivity> Activity => activity;
         public IBindable<UserStatistics> Statistics => statistics;
 
@@ -67,7 +67,7 @@ namespace osu.Game.Online.API
 
         private Bindable<APIUser> localUser { get; } = new Bindable<APIUser>(createGuestUser());
 
-        private BindableList<APIUser> friends { get; } = new BindableList<APIUser>();
+        private BindableList<APIRelation> friends { get; } = new BindableList<APIRelation>();
 
         private Bindable<UserActivity> activity { get; } = new Bindable<UserActivity>();
 
@@ -360,19 +360,7 @@ namespace osu.Game.Online.API
                 }
             }
 
-            var friendsReq = new GetFriendsRequest();
-            friendsReq.Failure += _ => state.Value = APIState.Failing;
-            friendsReq.Success += res =>
-            {
-                friends.Clear();
-                friends.AddRange(res);
-            };
-
-            if (!handleRequest(friendsReq))
-            {
-                state.Value = APIState.Failing;
-                return;
-            }
+            UpdateLocalFriends();
 
             // The Success callback event is fired on the main thread, so we should wait for that to run before proceeding.
             // Without this, we will end up circulating this Connecting loop multiple times and queueing up many web requests
@@ -624,6 +612,22 @@ namespace osu.Game.Online.API
                 localUser.Value.Statistics = newStatistics;
         }
 
+        public void UpdateLocalFriends()
+        {
+            if (!IsLoggedIn)
+                return;
+
+            var friendsReq = new GetFriendsRequest();
+            friendsReq.Failure += _ => state.Value = APIState.Failing;
+            friendsReq.Success += res =>
+            {
+                friends.Clear();
+                friends.AddRange(res);
+            };
+
+            Queue(friendsReq);
+        }
+
         private static APIUser createGuestUser() => new GuestUser();
 
         private void setLocalUser(APIUser user) => Scheduler.Add(() =>

osu.Game/Online/API/DummyAPIAccess.cs

@@ -26,7 +26,7 @@ namespace osu.Game.Online.API
             Id = DUMMY_USER_ID,
         });
 
-        public BindableList<APIUser> Friends { get; } = new BindableList<APIUser>();
+        public BindableList<APIRelation> Friends { get; } = new BindableList<APIRelation>();
 
         public Bindable<UserActivity> Activity { get; } = new Bindable<UserActivity>();
 
@@ -201,6 +201,10 @@ namespace osu.Game.Online.API
                 LocalUser.Value.Statistics = newStatistics;
         }
 
+        public void UpdateLocalFriends()
+        {
+        }
+
         public IHubClientConnector? GetHubConnector(string clientName, string endpoint, bool preferMessagePack) => null;
 
         public IChatClient GetChatClient() => new TestChatClientConnector(this);
@@ -214,7 +218,7 @@ namespace osu.Game.Online.API
         public void SetState(APIState newState) => state.Value = newState;
 
         IBindable<APIUser> IAPIProvider.LocalUser => LocalUser;
-        IBindableList<APIUser> IAPIProvider.Friends => Friends;
+        IBindableList<APIRelation> IAPIProvider.Friends => Friends;
         IBindable<UserActivity> IAPIProvider.Activity => Activity;
         IBindable<UserStatistics?> IAPIProvider.Statistics => Statistics;
 

osu.Game/Online/API/IAPIProvider.cs

@@ -22,7 +22,7 @@ namespace osu.Game.Online.API
         /// <summary>
         /// The user's friends.
         /// </summary>
-        IBindableList<APIUser> Friends { get; }
+        IBindableList<APIRelation> Friends { get; }
 
         /// <summary>
         /// The current user's activity.
@@ -134,6 +134,11 @@ namespace osu.Game.Online.API
         /// </summary>
         void UpdateStatistics(UserStatistics newStatistics);
 
+        /// <summary>
+        /// Update the friends status of the current user.
+        /// </summary>
+        void UpdateLocalFriends();
+
         /// <summary>
         /// Schedule a callback to run on the update thread.
         /// </summary>

osu.Game/Online/API/Requests/AddFriendRequest.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 System.Net.Http;
+using osu.Framework.IO.Network;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class AddFriendRequest : APIRequest<AddFriendResponse>
+    {
+        public readonly int TargetId;
+
+        public AddFriendRequest(int targetId)
+        {
+            TargetId = targetId;
+        }
+
+        protected override WebRequest CreateWebRequest()
+        {
+            var req = base.CreateWebRequest();
+
+            req.Method = HttpMethod.Post;
+            req.AddParameter("target", TargetId.ToString(), RequestParameterType.Query);
+
+            return req;
+        }
+
+        protected override string Target => @"friends";
+    }
+}

osu.Game/Online/API/Requests/AddFriendResponse.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 Newtonsoft.Json;
+using osu.Game.Online.API.Requests.Responses;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class AddFriendResponse
+    {
+        [JsonProperty("user_relation")]
+        public APIRelation UserRelation = null!;
+    }
+}

osu.Game/Online/API/Requests/DeleteFriendRequest.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 System.Net.Http;
+using osu.Framework.IO.Network;
+
+namespace osu.Game.Online.API.Requests
+{
+    public class DeleteFriendRequest : APIRequest
+    {
+        public readonly int TargetId;
+
+        public DeleteFriendRequest(int targetId)
+        {
+            TargetId = targetId;
+        }
+
+        protected override WebRequest CreateWebRequest()
+        {
+            var req = base.CreateWebRequest();
+            req.Method = HttpMethod.Delete;
+            return req;
+        }
+
+        protected override string Target => $@"friends/{TargetId}";
+    }
+}

osu.Game/Online/API/Requests/GetFriendsRequest.cs

@@ -6,7 +6,7 @@ using osu.Game.Online.API.Requests.Responses;
 
 namespace osu.Game.Online.API.Requests
 {
-    public class GetFriendsRequest : APIRequest<List<APIUser>>
+    public class GetFriendsRequest : APIRequest<List<APIRelation>>
     {
         protected override string Target => @"friends";
     }

osu.Game/Online/API/Requests/Responses/APIRelation.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 Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+
+namespace osu.Game.Online.API.Requests.Responses
+{
+    public class APIRelation
+    {
+        [JsonProperty("target_id")]
+        public int TargetID { get; set; }
+
+        [JsonProperty("relation_type")]
+        public RelationType RelationType { get; set; }
+
+        [JsonProperty("mutual")]
+        public bool Mutual { get; set; }
+
+        [JsonProperty("target")]
+        public APIUser? TargetUser { get; set; }
+    }
+
+    [JsonConverter(typeof(StringEnumConverter))]
+    public enum RelationType
+    {
+        Friend,
+        Block,
+    }
+}

osu.Game/Online/Chat/ExternalLinkOpener.cs

@@ -11,7 +11,7 @@ using osu.Game.Configuration;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Dialog;
-using CommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
+using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Online.Chat
 {
@@ -60,12 +60,12 @@ namespace osu.Game.Online.Chat
                     },
                     new PopupDialogCancelButton
                     {
-                        Text = @"Copy link",
+                        Text = CommonStrings.CopyLink,
                         Action = copyExternalLinkAction
                     },
                     new PopupDialogCancelButton
                     {
-                        Text = CommonStrings.ButtonsCancel,
+                        Text = WebCommonStrings.ButtonsCancel,
                     },
                 };
             }

osu.Game/Online/Leaderboards/LeaderboardScore.cs

@@ -17,6 +17,7 @@ using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
+using osu.Framework.Platform;
 using osu.Game.Extensions;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
@@ -33,6 +34,8 @@ using osu.Game.Online.API;
 using osu.Game.Resources.Localisation.Web;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Utils;
+using CommonStrings = osu.Game.Localisation.CommonStrings;
+using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Online.Leaderboards
 {
@@ -71,6 +74,12 @@ namespace osu.Game.Online.Leaderboards
         [Resolved(canBeNull: true)]
         private SongSelect songSelect { get; set; }
 
+        [Resolved(canBeNull: true)]
+        private Clipboard clipboard { get; set; }
+
+        [Resolved]
+        private IAPIProvider api { get; set; }
+
         public ITooltip<ScoreInfo> GetCustomTooltip() => new LeaderboardScoreTooltip();
         public virtual ScoreInfo TooltipContent => Score;
 
@@ -423,10 +432,13 @@ namespace osu.Game.Online.Leaderboards
                 if (Score.Mods.Length > 0 && songSelect != null)
                     items.Add(new OsuMenuItem("Use these mods", MenuItemType.Highlighted, () => songSelect.Mods.Value = Score.Mods));
 
+                if (Score.OnlineID > 0)
+                    items.Add(new OsuMenuItem(CommonStrings.CopyLink, MenuItemType.Standard, () => clipboard?.SetText($@"{api.WebsiteRootUrl}/scores/{Score.OnlineID}")));
+
                 if (Score.Files.Count > 0)
                 {
-                    items.Add(new OsuMenuItem(Localisation.CommonStrings.Export, MenuItemType.Standard, () => scoreManager.Export(Score)));
-                    items.Add(new OsuMenuItem(CommonStrings.ButtonsDelete, MenuItemType.Destructive, () => dialogOverlay?.Push(new LocalScoreDeleteDialog(Score))));
+                    items.Add(new OsuMenuItem(CommonStrings.Export, MenuItemType.Standard, () => scoreManager.Export(Score)));
+                    items.Add(new OsuMenuItem(WebCommonStrings.ButtonsDelete, MenuItemType.Destructive, () => dialogOverlay?.Push(new LocalScoreDeleteDialog(Score))));
                 }
 
                 return items.ToArray();

osu.Game/Online/Multiplayer/MultiplayerClient.cs

@@ -202,7 +202,7 @@ namespace osu.Game.Online.Multiplayer
                     Debug.Assert(joinedRoom.Playlist.Count > 0);
 
                     APIRoom.Playlist.Clear();
-                    APIRoom.Playlist.AddRange(joinedRoom.Playlist.Select(createPlaylistItem));
+                    APIRoom.Playlist.AddRange(joinedRoom.Playlist.Select(item => new PlaylistItem(item)));
                     APIRoom.CurrentPlaylistItem.Value = APIRoom.Playlist.Single(item => item.ID == joinedRoom.Settings.PlaylistItemId);
 
                     // The server will null out the end date upon the host joining the room, but the null value is never communicated to the client.
@@ -734,7 +734,7 @@ namespace osu.Game.Online.Multiplayer
                 Debug.Assert(APIRoom != null);
 
                 Room.Playlist.Add(item);
-                APIRoom.Playlist.Add(createPlaylistItem(item));
+                APIRoom.Playlist.Add(new PlaylistItem(item));
 
                 ItemAdded?.Invoke(item);
                 RoomUpdated?.Invoke();
@@ -780,7 +780,7 @@ namespace osu.Game.Online.Multiplayer
                     int existingIndex = APIRoom.Playlist.IndexOf(APIRoom.Playlist.Single(existing => existing.ID == item.ID));
 
                     APIRoom.Playlist.RemoveAt(existingIndex);
-                    APIRoom.Playlist.Insert(existingIndex, createPlaylistItem(item));
+                    APIRoom.Playlist.Insert(existingIndex, new PlaylistItem(item));
                 }
                 catch (Exception ex)
                 {
@@ -853,18 +853,6 @@ namespace osu.Game.Online.Multiplayer
             RoomUpdated?.Invoke();
         }
 
-        private PlaylistItem createPlaylistItem(MultiplayerPlaylistItem item) => new PlaylistItem(new APIBeatmap { OnlineID = item.BeatmapID, StarRating = item.StarRating })
-        {
-            ID = item.ID,
-            OwnerID = item.OwnerID,
-            RulesetID = item.RulesetID,
-            Expired = item.Expired,
-            PlaylistOrder = item.PlaylistOrder,
-            PlayedAt = item.PlayedAt,
-            RequiredMods = item.RequiredMods.ToArray(),
-            AllowedMods = item.AllowedMods.ToArray()
-        };
-
         /// <summary>
         /// For the provided user ID, update whether the user is included in <see cref="CurrentMatchPlayingUserIds"/>.
         /// </summary>

osu.Game/Online/Multiplayer/MultiplayerRoomExtensions.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 System.Collections.Generic;
+using System.Linq;
+using osu.Game.Online.Rooms;
+
+namespace osu.Game.Online.Multiplayer
+{
+    public static class MultiplayerRoomExtensions
+    {
+        /// <summary>
+        /// Returns all historical/expired items from the <paramref name="room"/>, in the order in which they were played.
+        /// </summary>
+        public static IEnumerable<MultiplayerPlaylistItem> GetHistoricalItems(this MultiplayerRoom room)
+            => room.Playlist.Where(item => item.Expired).OrderBy(item => item.PlayedAt);
+
+        /// <summary>
+        /// Returns all non-expired items from the <paramref name="room"/>, in the order in which they are to be played.
+        /// </summary>
+        public static IEnumerable<MultiplayerPlaylistItem> GetUpcomingItems(this MultiplayerRoom room)
+            => room.Playlist.Where(item => !item.Expired).OrderBy(item => item.PlaylistOrder);
+
+        /// <summary>
+        /// Returns the first non-expired <see cref="MultiplayerPlaylistItem"/> in playlist order from the supplied <paramref name="room"/>,
+        /// or the last-played <see cref="MultiplayerPlaylistItem"/> if all items are expired,
+        /// or <see langword="null"/> if <paramref name="room"/> was empty.
+        /// </summary>
+        public static MultiplayerPlaylistItem? GetCurrentItem(this MultiplayerRoom room)
+        {
+            if (room.Playlist.Count == 0)
+                return null;
+
+            return room.Playlist.All(item => item.Expired)
+                ? GetHistoricalItems(room).Last()
+                : GetUpcomingItems(room).First();
+        }
+    }
+}

osu.Game/OsuGameBase.cs

@@ -198,7 +198,7 @@ namespace osu.Game
         public readonly Bindable<Dictionary<ModType, IReadOnlyList<Mod>>> AvailableMods = new Bindable<Dictionary<ModType, IReadOnlyList<Mod>>>(new Dictionary<ModType, IReadOnlyList<Mod>>());
 
         private BeatmapDifficultyCache difficultyCache;
-        private BeatmapUpdater beatmapUpdater;
+        private IBeatmapUpdater beatmapUpdater;
 
         private UserLookupCache userCache;
         private BeatmapLookupCache beatmapCache;
@@ -324,7 +324,7 @@ namespace osu.Game
             base.Content.Add(difficultyCache);
 
             // TODO: OsuGame or OsuGameBase?
-            dependencies.CacheAs(beatmapUpdater = new BeatmapUpdater(BeatmapManager, difficultyCache, API, Storage));
+            dependencies.CacheAs(beatmapUpdater = CreateBeatmapUpdater());
             dependencies.CacheAs(SpectatorClient = new OnlineSpectatorClient(endpoints));
             dependencies.CacheAs(MultiplayerClient = new OnlineMultiplayerClient(endpoints));
             dependencies.CacheAs(metadataClient = new OnlineMetadataClient(endpoints));
@@ -563,6 +563,8 @@ namespace osu.Game
             }
         }
 
+        protected virtual IBeatmapUpdater CreateBeatmapUpdater() => new BeatmapUpdater(BeatmapManager, difficultyCache, API, Storage);
+
         protected override UserInputManager CreateUserInputManager() => new OsuUserInputManager();
 
         protected virtual BatteryInfo CreateBatteryInfo() => null;

osu.Game/Overlays/Dashboard/Friends/FriendDisplay.cs

@@ -6,14 +6,17 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
+using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
+using osu.Game.Resources.Localisation.Web;
 using osu.Game.Users;
 using osuTK;
 
@@ -35,7 +38,8 @@ namespace osu.Game.Overlays.Dashboard.Friends
 
         private CancellationTokenSource cancellationToken;
 
-        private Drawable currentContent;
+        [CanBeNull]
+        private SearchContainer currentContent;
 
         private FriendOnlineStreamControl onlineStreamControl;
         private Box background;
@@ -43,8 +47,9 @@ namespace osu.Game.Overlays.Dashboard.Friends
         private UserListToolbar userListToolbar;
         private Container itemsPlaceholder;
         private LoadingLayer loading;
+        private BasicSearchTextBox searchTextBox;
 
-        private readonly IBindableList<APIUser> apiFriends = new BindableList<APIUser>();
+        private readonly IBindableList<APIRelation> apiFriends = new BindableList<APIRelation>();
 
         public FriendDisplay()
         {
@@ -104,7 +109,7 @@ namespace osu.Game.Overlays.Dashboard.Friends
                                 Margin = new MarginPadding { Bottom = 20 },
                                 Children = new Drawable[]
                                 {
-                                    new Container
+                                    new GridContainer
                                     {
                                         RelativeSizeAxes = Axes.X,
                                         AutoSizeAxes = Axes.Y,
@@ -113,11 +118,38 @@ namespace osu.Game.Overlays.Dashboard.Friends
                                             Horizontal = 40,
                                             Vertical = 20
                                         },
-                                        Child = userListToolbar = new UserListToolbar
+                                        ColumnDimensions = new[]
                                         {
-                                            Anchor = Anchor.CentreRight,
-                                            Origin = Anchor.CentreRight,
-                                        }
+                                            new Dimension(),
+                                            new Dimension(GridSizeMode.Absolute, 50),
+                                            new Dimension(GridSizeMode.AutoSize),
+                                        },
+                                        RowDimensions = new[]
+                                        {
+                                            new Dimension(GridSizeMode.AutoSize),
+                                        },
+                                        Content = new[]
+                                        {
+                                            new[]
+                                            {
+                                                searchTextBox = new BasicSearchTextBox
+                                                {
+                                                    RelativeSizeAxes = Axes.X,
+                                                    Anchor = Anchor.CentreLeft,
+                                                    Origin = Anchor.CentreLeft,
+                                                    Height = 40,
+                                                    ReleaseFocusOnCommit = false,
+                                                    HoldFocus = true,
+                                                    PlaceholderText = HomeStrings.SearchPlaceholder,
+                                                },
+                                                Empty(),
+                                                userListToolbar = new UserListToolbar
+                                                {
+                                                    Anchor = Anchor.CentreRight,
+                                                    Origin = Anchor.CentreRight,
+                                                },
+                                            },
+                                        },
                                     },
                                     new Container
                                     {
@@ -145,7 +177,7 @@ namespace osu.Game.Overlays.Dashboard.Friends
             controlBackground.Colour = colourProvider.Background5;
 
             apiFriends.BindTo(api.Friends);
-            apiFriends.BindCollectionChanged((_, _) => Schedule(() => Users = apiFriends.ToList()), true);
+            apiFriends.BindCollectionChanged((_, _) => Schedule(() => Users = apiFriends.Select(f => f.TargetUser).ToList()), true);
         }
 
         protected override void LoadComplete()
@@ -155,6 +187,11 @@ namespace osu.Game.Overlays.Dashboard.Friends
             onlineStreamControl.Current.BindValueChanged(_ => recreatePanels());
             userListToolbar.DisplayStyle.BindValueChanged(_ => recreatePanels());
             userListToolbar.SortCriteria.BindValueChanged(_ => recreatePanels());
+            searchTextBox.Current.BindValueChanged(_ =>
+            {
+                if (currentContent.IsNotNull())
+                    currentContent.SearchTerm = searchTextBox.Current.Value;
+            });
         }
 
         private void recreatePanels()
@@ -188,7 +225,7 @@ namespace osu.Game.Overlays.Dashboard.Friends
             }
         }
 
-        private void addContentToPlaceholder(Drawable content)
+        private void addContentToPlaceholder(SearchContainer content)
         {
             loading.Hide();
 
@@ -204,16 +241,17 @@ namespace osu.Game.Overlays.Dashboard.Friends
             currentContent.FadeIn(200, Easing.OutQuint);
         }
 
-        private FillFlowContainer createTable(List<APIUser> users)
+        private SearchContainer createTable(List<APIUser> users)
         {
             var style = userListToolbar.DisplayStyle.Value;
 
-            return new FillFlowContainer
+            return new SearchContainer
             {
                 RelativeSizeAxes = Axes.X,
                 AutoSizeAxes = Axes.Y,
                 Spacing = new Vector2(style == OverlayPanelDisplayStyle.Card ? 10 : 2),
-                Children = users.Select(u => createUserPanel(u, style)).ToList()
+                Children = users.Select(u => createUserPanel(u, style)).ToList(),
+                SearchTerm = searchTextBox.Current.Value,
             };
         }
 

osu.Game/Overlays/Profile/Header/Components/FollowersButton.cs

@@ -1,11 +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.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Graphics;
 using osu.Framework.Graphics.Sprites;
+using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
+using osu.Game.Graphics;
+using osu.Game.Online.API;
+using osu.Game.Online.API.Requests;
+using osu.Game.Online.API.Requests.Responses;
+using osu.Game.Overlays.Notifications;
 using osu.Game.Resources.Localisation.Web;
+using SharpCompress;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
@@ -13,15 +23,201 @@ namespace osu.Game.Overlays.Profile.Header.Components
     {
         public readonly Bindable<UserProfileData?> User = new Bindable<UserProfileData?>();
 
-        public override LocalisableString TooltipText => FriendsStrings.ButtonsDisabled;
+        // Because it is impossible to update the number of friends after the operation,
+        // the number of friends obtained is stored and modified locally.
+        private int followerCount;
+
+        public override LocalisableString TooltipText
+        {
+            get
+            {
+                switch (status.Value)
+                {
+                    case FriendStatus.Self:
+                        return FriendsStrings.ButtonsDisabled;
+
+                    case FriendStatus.None:
+                        return FriendsStrings.ButtonsAdd;
+
+                    case FriendStatus.NotMutual:
+                    case FriendStatus.Mutual:
+                        return FriendsStrings.ButtonsRemove;
+                }
+
+                return FriendsStrings.TitleCompact;
+            }
+        }
 
         protected override IconUsage Icon => FontAwesome.Solid.User;
 
+        private readonly IBindableList<APIRelation> apiFriends = new BindableList<APIRelation>();
+        private readonly IBindable<APIUser> localUser = new Bindable<APIUser>();
+
+        private readonly Bindable<FriendStatus> status = new Bindable<FriendStatus>();
+
+        [Resolved]
+        private OsuColour colour { get; set; } = null!;
+
+        [Resolved]
+        private OverlayColourProvider colourProvider { get; set; } = null!;
+
         [BackgroundDependencyLoader]
-        private void load()
+        private void load(IAPIProvider api, INotificationOverlay? notifications)
         {
-            // todo: when friending/unfriending is implemented, the APIAccess.Friends list should be updated accordingly.
-            User.BindValueChanged(user => SetValue(user.NewValue?.User.FollowerCount ?? 0), true);
+            localUser.BindTo(api.LocalUser);
+
+            status.BindValueChanged(_ =>
+            {
+                updateIcon();
+                updateColor();
+            });
+
+            User.BindValueChanged(u =>
+            {
+                followerCount = u.NewValue?.User.FollowerCount ?? 0;
+                updateStatus();
+            }, true);
+
+            apiFriends.BindTo(api.Friends);
+            apiFriends.BindCollectionChanged((_, _) => Schedule(updateStatus));
+
+            Action += () =>
+            {
+                if (User.Value == null)
+                    return;
+
+                if (status.Value == FriendStatus.Self)
+                    return;
+
+                ShowLoadingLayer();
+
+                APIRequest req = status.Value == FriendStatus.None ? new AddFriendRequest(User.Value.User.OnlineID) : new DeleteFriendRequest(User.Value.User.OnlineID);
+
+                req.Success += () =>
+                {
+                    if (req is AddFriendRequest addedRequest)
+                    {
+                        SetValue(++followerCount);
+                        status.Value = addedRequest.Response?.UserRelation.Mutual == true ? FriendStatus.Mutual : FriendStatus.NotMutual;
+                    }
+                    else
+                    {
+                        SetValue(--followerCount);
+                        status.Value = FriendStatus.None;
+                    }
+
+                    api.UpdateLocalFriends();
+                    HideLoadingLayer();
+                };
+
+                req.Failure += e =>
+                {
+                    notifications?.Post(new SimpleNotification
+                    {
+                        Text = e.Message,
+                        Icon = FontAwesome.Solid.Times,
+                    });
+
+                    HideLoadingLayer();
+                };
+
+                api.Queue(req);
+            };
+        }
+
+        protected override bool OnHover(HoverEvent e)
+        {
+            if (status.Value > FriendStatus.None)
+            {
+                SetIcon(FontAwesome.Solid.UserTimes);
+            }
+
+            return base.OnHover(e);
+        }
+
+        protected override void OnHoverLost(HoverLostEvent e)
+        {
+            base.OnHoverLost(e);
+
+            updateIcon();
+        }
+
+        private void updateStatus()
+        {
+            SetValue(followerCount);
+
+            if (localUser.Value.OnlineID == User.Value?.User.OnlineID)
+            {
+                status.Value = FriendStatus.Self;
+                return;
+            }
+
+            var friend = apiFriends.FirstOrDefault(u => User.Value?.User.OnlineID == u.TargetID);
+
+            if (friend != null)
+            {
+                status.Value = friend.Mutual ? FriendStatus.Mutual : FriendStatus.NotMutual;
+            }
+            else
+            {
+                status.Value = FriendStatus.None;
+            }
+        }
+
+        private void updateIcon()
+        {
+            switch (status.Value)
+            {
+                case FriendStatus.Self:
+                    SetIcon(FontAwesome.Solid.User);
+                    break;
+
+                case FriendStatus.None:
+                    SetIcon(FontAwesome.Solid.UserPlus);
+                    break;
+
+                case FriendStatus.NotMutual:
+                    SetIcon(FontAwesome.Solid.User);
+                    break;
+
+                case FriendStatus.Mutual:
+                    SetIcon(FontAwesome.Solid.UserFriends);
+                    break;
+            }
+        }
+
+        private void updateColor()
+        {
+            // https://github.com/ppy/osu-web/blob/0a5367a4a68a6cdf450eb483251b3cf03b3ac7d2/resources/css/bem/user-action-button.less
+
+            switch (status.Value)
+            {
+                case FriendStatus.Self:
+                case FriendStatus.None:
+                    IdleColour = colourProvider.Background6;
+                    HoverColour = colourProvider.Background5;
+                    break;
+
+                case FriendStatus.NotMutual:
+                    IdleColour = colour.Green.Opacity(0.7f);
+                    HoverColour = IdleColour.Lighten(0.1f);
+                    break;
+
+                case FriendStatus.Mutual:
+                    IdleColour = colour.Pink.Opacity(0.7f);
+                    HoverColour = IdleColour.Lighten(0.1f);
+                    break;
+            }
+
+            EffectTargets.ForEach(d => d.FadeColour(IsHovered ? HoverColour : IdleColour, FADE_DURATION, Easing.OutQuint));
+        }
+
+        private enum FriendStatus
+        {
+            Self,
+            None,
+            NotMutual,
+            Mutual,
         }
     }
 }

osu.Game/Overlays/Profile/Header/Components/ProfileHeaderButton.cs

@@ -7,6 +7,7 @@ using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Game.Graphics.Containers;
+using osu.Game.Graphics.UserInterface;
 
 namespace osu.Game.Overlays.Profile.Header.Components
 {
@@ -14,6 +15,7 @@ namespace osu.Game.Overlays.Profile.Header.Components
     {
         private readonly Box background;
         private readonly Container content;
+        private readonly LoadingLayer loading;
 
         protected override Container<Drawable> Content => content;
 
@@ -40,11 +42,22 @@ namespace osu.Game.Overlays.Profile.Header.Components
                         AutoSizeAxes = Axes.X,
                         RelativeSizeAxes = Axes.Y,
                         Padding = new MarginPadding { Horizontal = 10 },
-                    }
+                    },
+                    loading = new LoadingLayer(true, false)
                 }
             });
         }
 
+        protected void ShowLoadingLayer()
+        {
+            loading.Show();
+        }
+
+        protected void HideLoadingLayer()
+        {
+            loading.Hide();
+        }
+
         [BackgroundDependencyLoader]
         private void load(OverlayColourProvider colourProvider)
         {

osu.Game/Overlays/Profile/Header/Components/ProfileHeaderStatisticsButton.cs

@@ -14,6 +14,7 @@ namespace osu.Game.Overlays.Profile.Header.Components
     public abstract partial class ProfileHeaderStatisticsButton : ProfileHeaderButton
     {
         private readonly OsuSpriteText drawableText;
+        private readonly Container iconContainer;
 
         protected ProfileHeaderStatisticsButton()
         {
@@ -26,13 +27,11 @@ namespace osu.Game.Overlays.Profile.Header.Components
                 Direction = FillDirection.Horizontal,
                 Children = new Drawable[]
                 {
-                    new SpriteIcon
+                    iconContainer = new Container
                     {
                         Anchor = Anchor.CentreLeft,
                         Origin = Anchor.CentreLeft,
-                        Icon = Icon,
-                        FillMode = FillMode.Fit,
-                        Size = new Vector2(50, 14)
+                        AutoSizeAxes = Axes.Both,
                     },
                     drawableText = new OsuSpriteText
                     {
@@ -43,10 +42,24 @@ namespace osu.Game.Overlays.Profile.Header.Components
                     }
                 }
             };
+
+            SetIcon(Icon);
         }
 
         protected abstract IconUsage Icon { get; }
 
+        protected void SetIcon(IconUsage icon)
+        {
+            iconContainer.Child = new SpriteIcon
+            {
+                Anchor = Anchor.CentreLeft,
+                Origin = Anchor.CentreLeft,
+                Icon = icon,
+                FillMode = FillMode.Fit,
+                Size = new Vector2(50, 14)
+            };
+        }
+
         protected void SetValue(int value) => drawableText.Text = value.ToLocalisableString("#,##0");
     }
 }

osu.Game/Overlays/Settings/Sections/Input/KeyBindingRow.cs

@@ -222,7 +222,7 @@ namespace osu.Game.Overlays.Settings.Sections.Input
                 var button = buttons[i++];
                 button.UpdateKeyCombination(d);
 
-                tryPersistKeyBinding(button.KeyBinding.Value, advanceToNextBinding: false);
+                tryPersistKeyBinding(button.KeyBinding.Value, advanceToNextBinding: false, restoringDefaults: true);
             }
 
             isDefault.Value = true;
@@ -489,12 +489,25 @@ namespace osu.Game.Overlays.Settings.Sections.Input
             base.OnFocusLost(e);
         }
 
-        private void tryPersistKeyBinding(RealmKeyBinding keyBinding, bool advanceToNextBinding)
+        private bool isConflictingBinding(RealmKeyBinding first, RealmKeyBinding second, bool restoringDefaults)
+        {
+            if (first.ID == second.ID)
+                return false;
+
+            // ignore conflicts with same action bindings during revert. the assumption is that the other binding will be reverted subsequently in the same higher-level operation.
+            // this happens if the bindings for an action are rebound to the same keys, but the ordering of the bindings itself is different.
+            if (restoringDefaults && first.ActionInt == second.ActionInt)
+                return false;
+
+            return first.KeyCombination.Equals(second.KeyCombination);
+        }
+
+        private void tryPersistKeyBinding(RealmKeyBinding keyBinding, bool advanceToNextBinding, bool restoringDefaults = false)
         {
             List<RealmKeyBinding> bindings = GetAllSectionBindings();
             RealmKeyBinding? existingBinding = keyBinding.KeyCombination.Equals(new KeyCombination(InputKey.None))
                 ? null
-                : bindings.FirstOrDefault(other => other.ID != keyBinding.ID && other.KeyCombination.Equals(keyBinding.KeyCombination));
+                : bindings.FirstOrDefault(other => isConflictingBinding(keyBinding, other, restoringDefaults));
 
             if (existingBinding == null)
             {

osu.Game/Overlays/Toolbar/ToolbarRulesetSelector.cs

@@ -122,7 +122,10 @@ namespace osu.Game.Overlays.Toolbar
 
             rulesetSelectionChannel[r.NewValue] = channel;
             channel.Play();
-            musicController?.DuckMomentarily(500, new DuckParameters { DuckDuration = 0 });
+
+            // Longer unduck delay for Mania sample
+            int unduckDelay = r.NewValue.OnlineID == 3 ? 750 : 500;
+            musicController?.DuckMomentarily(unduckDelay, new DuckParameters { DuckDuration = 0 });
         }
 
         public override bool HandleNonPositionalInput => !Current.Disabled && base.HandleNonPositionalInput;

osu.Game/Rulesets/Difficulty/DifficultyAttributes.cs

@@ -29,6 +29,7 @@ namespace osu.Game.Rulesets.Difficulty
         protected const int ATTRIB_ID_SPEED_DIFFICULT_STRAIN_COUNT = 23;
         protected const int ATTRIB_ID_AIM_DIFFICULT_STRAIN_COUNT = 25;
         protected const int ATTRIB_ID_OK_HIT_WINDOW = 27;
+        protected const int ATTRIB_ID_MONO_STAMINA_FACTOR = 29;
 
         /// <summary>
         /// The mods which were applied to the beatmap.

osu.Game/Screens/Edit/Compose/Components/EditorOrigin.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.
+
+namespace osu.Game.Screens.Edit.Compose.Components
+{
+    public enum EditorOrigin
+    {
+        GridCentre,
+        PlayfieldCentre,
+        SelectionCentre
+    }
+}

osu.Game/Screens/Edit/Compose/Components/Timeline/TimelineBreakDisplay.cs

@@ -6,6 +6,7 @@ using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Caching;
 using osu.Game.Beatmaps.Timing;
+using osu.Game.Configuration;
 using osu.Game.Screens.Edit.Components.Timelines.Summary.Parts;
 
 namespace osu.Game.Screens.Edit.Compose.Components.Timeline
@@ -27,6 +28,15 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
 
         private readonly BindableList<BreakPeriod> breaks = new BindableList<BreakPeriod>();
 
+        private readonly BindableBool showBreaks = new BindableBool(true);
+
+        [BackgroundDependencyLoader]
+        private void load(OsuConfigManager configManager)
+        {
+            configManager.BindWith(OsuSetting.EditorTimelineShowBreaks, showBreaks);
+            showBreaks.BindValueChanged(_ => breakCache.Invalidate());
+        }
+
         protected override void LoadBeatmap(EditorBeatmap beatmap)
         {
             base.LoadBeatmap(beatmap);
@@ -67,6 +77,9 @@ namespace osu.Game.Screens.Edit.Compose.Components.Timeline
         {
             Clear();
 
+            if (!showBreaks.Value)
+                return;
+
             for (int i = 0; i < breaks.Count; i++)
             {
                 var breakPeriod = breaks[i];

osu.Game/Screens/Edit/Editor.cs

@@ -214,6 +214,7 @@ namespace osu.Game.Screens.Edit
         private Bindable<bool> editorAutoSeekOnPlacement;
         private Bindable<bool> editorLimitedDistanceSnap;
         private Bindable<bool> editorTimelineShowTimingChanges;
+        private Bindable<bool> editorTimelineShowBreaks;
         private Bindable<bool> editorTimelineShowTicks;
         private Bindable<bool> editorContractSidebars;
 
@@ -323,6 +324,7 @@ namespace osu.Game.Screens.Edit
             editorAutoSeekOnPlacement = config.GetBindable<bool>(OsuSetting.EditorAutoSeekOnPlacement);
             editorLimitedDistanceSnap = config.GetBindable<bool>(OsuSetting.EditorLimitedDistanceSnap);
             editorTimelineShowTimingChanges = config.GetBindable<bool>(OsuSetting.EditorTimelineShowTimingChanges);
+            editorTimelineShowBreaks = config.GetBindable<bool>(OsuSetting.EditorTimelineShowBreaks);
             editorTimelineShowTicks = config.GetBindable<bool>(OsuSetting.EditorTimelineShowTicks);
             editorContractSidebars = config.GetBindable<bool>(OsuSetting.EditorContractSidebars);
 
@@ -390,6 +392,10 @@ namespace osu.Game.Screens.Edit
                                                     {
                                                         State = { BindTarget = editorTimelineShowTicks }
                                                     },
+                                                    new ToggleMenuItem(EditorStrings.TimelineShowBreaks)
+                                                    {
+                                                        State = { BindTarget = editorTimelineShowBreaks }
+                                                    },
                                                 ]
                                             },
                                             new BackgroundDimMenuItem(editorBackgroundDim),
@@ -415,7 +421,7 @@ namespace osu.Game.Screens.Edit
                                     {
                                         Items = new MenuItem[]
                                         {
-                                            new EditorMenuItem(EditorStrings.SetPreviewPointToCurrent, MenuItemType.Standard, SetPreviewPointToCurrentTime)
+                                            new EditorMenuItem(EditorStrings.SetPreviewPointToCurrent, MenuItemType.Standard, SetPreviewPointToCurrentTime),
                                         }
                                     }
                                 }

osu.Game/Screens/Edit/Timing/GroupSection.cs

@@ -7,6 +7,7 @@ using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
 using osuTK;
@@ -25,6 +26,9 @@ namespace osu.Game.Screens.Edit.Timing
         [Resolved]
         protected EditorBeatmap Beatmap { get; private set; } = null!;
 
+        [Resolved]
+        private OsuConfigManager configManager { get; set; } = null!;
+
         [Resolved]
         private EditorClock clock { get; set; } = null!;
 
@@ -110,7 +114,16 @@ namespace osu.Game.Screens.Edit.Timing
             Beatmap.ControlPointInfo.RemoveGroup(SelectedGroup.Value);
 
             foreach (var cp in currentGroupItems)
+            {
+                // Only adjust hit object offsets if the group contains a timing control point
+                if (cp is TimingControlPoint tp && configManager.Get<bool>(OsuSetting.EditorAdjustExistingObjectsOnTimingChanges))
+                {
+                    TimingSectionAdjustments.AdjustHitObjectOffset(Beatmap, tp, time - SelectedGroup.Value.Time);
+                    Beatmap.UpdateAllHitObjects();
+                }
+
                 Beatmap.ControlPointInfo.Add(time, cp);
+            }
 
             // the control point might not necessarily exist yet, if currentGroupItems was empty.
             SelectedGroup.Value = Beatmap.ControlPointInfo.GroupAt(time, true);

osu.Game/Screens/Edit/Timing/TapTimingControl.cs

@@ -10,6 +10,7 @@ using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.Sprites;
 using osu.Framework.Input.Events;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Configuration;
 using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterfaceV2;
@@ -26,6 +27,9 @@ namespace osu.Game.Screens.Edit.Timing
         [Resolved]
         private EditorBeatmap beatmap { get; set; } = null!;
 
+        [Resolved]
+        private OsuConfigManager configManager { get; set; } = null!;
+
         [Resolved]
         private Bindable<ControlPointGroup> selectedGroup { get; set; } = null!;
 
@@ -202,15 +206,25 @@ namespace osu.Game.Screens.Edit.Timing
             // VERY TEMPORARY
             var currentGroupItems = selectedGroup.Value.ControlPoints.ToArray();
 
+            beatmap.BeginChange();
             beatmap.ControlPointInfo.RemoveGroup(selectedGroup.Value);
 
             double newOffset = selectedGroup.Value.Time + adjust;
 
             foreach (var cp in currentGroupItems)
+            {
+                if (cp is TimingControlPoint tp)
+                {
+                    TimingSectionAdjustments.AdjustHitObjectOffset(beatmap, tp, adjust);
+                    beatmap.UpdateAllHitObjects();
+                }
+
                 beatmap.ControlPointInfo.Add(newOffset, cp);
+            }
 
             // the control point might not necessarily exist yet, if currentGroupItems was empty.
             selectedGroup.Value = beatmap.ControlPointInfo.GroupAt(newOffset, true);
+            beatmap.EndChange();
 
             if (!editorClock.IsRunning && wasAtStart)
                 editorClock.Seek(newOffset);
@@ -223,7 +237,16 @@ namespace osu.Game.Screens.Edit.Timing
             if (timing == null)
                 return;
 
+            double oldBeatLength = timing.BeatLength;
             timing.BeatLength = 60000 / (timing.BPM + adjust);
+
+            if (configManager.Get<bool>(OsuSetting.EditorAdjustExistingObjectsOnTimingChanges))
+            {
+                beatmap.BeginChange();
+                TimingSectionAdjustments.SetHitObjectBPM(beatmap, timing, oldBeatLength);
+                beatmap.UpdateAllHitObjects();
+                beatmap.EndChange();
+            }
         }
 
         private partial class InlineButton : OsuButton

osu.Game/Screens/Edit/Timing/TimingSection.cs

@@ -1,11 +1,14 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
+using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Configuration;
 using osu.Game.Graphics.UserInterfaceV2;
+using osu.Game.Localisation;
 
 namespace osu.Game.Screens.Edit.Timing
 {
@@ -15,11 +18,20 @@ namespace osu.Game.Screens.Edit.Timing
         private LabelledSwitchButton omitBarLine = null!;
         private BPMTextBox bpmTextEntry = null!;
 
+        [Resolved]
+        private OsuConfigManager configManager { get; set; } = null!;
+
         [BackgroundDependencyLoader]
         private void load()
         {
             Flow.AddRange(new Drawable[]
             {
+                new LabelledSwitchButton
+                {
+                    Label = EditorStrings.AdjustExistingObjectsOnTimingChanges,
+                    FixedLabelWidth = 220,
+                    Current = configManager.GetBindable<bool>(OsuSetting.EditorAdjustExistingObjectsOnTimingChanges),
+                },
                 new TapTimingControl(),
                 bpmTextEntry = new BPMTextBox(),
                 timeSignature = new LabelledTimeSignature
@@ -42,6 +54,17 @@ namespace osu.Game.Screens.Edit.Timing
             {
                 if (!isRebinding) ChangeHandler?.SaveState();
             }
+
+            bpmTextEntry.OnCommit = (oldBeatLength, _) =>
+            {
+                if (!configManager.Get<bool>(OsuSetting.EditorAdjustExistingObjectsOnTimingChanges) || ControlPoint.Value == null)
+                    return;
+
+                Beatmap.BeginChange();
+                TimingSectionAdjustments.SetHitObjectBPM(Beatmap, ControlPoint.Value, oldBeatLength);
+                Beatmap.UpdateAllHitObjects();
+                Beatmap.EndChange();
+            };
         }
 
         private bool isRebinding;
@@ -74,6 +97,8 @@ namespace osu.Game.Screens.Edit.Timing
 
         private partial class BPMTextBox : LabelledTextBox
         {
+            public new Action<double, double>? OnCommit { get; set; }
+
             private readonly BindableNumber<double> beatLengthBindable = new TimingControlPoint().BeatLengthBindable;
 
             public BPMTextBox()
@@ -81,10 +106,12 @@ namespace osu.Game.Screens.Edit.Timing
                 Label = "BPM";
                 SelectAllOnFocus = true;
 
-                OnCommit += (_, isNew) =>
+                base.OnCommit += (_, isNew) =>
                 {
                     if (!isNew) return;
 
+                    double oldBeatLength = beatLengthBindable.Value;
+
                     try
                     {
                         if (double.TryParse(Current.Value, out double doubleVal) && doubleVal > 0)
@@ -98,6 +125,7 @@ namespace osu.Game.Screens.Edit.Timing
                     // This is run regardless of parsing success as the parsed number may not actually trigger a change
                     // due to bindable clamping. Even in such a case we want to update the textbox to a sane visual state.
                     beatLengthBindable.TriggerChange();
+                    OnCommit?.Invoke(oldBeatLength, beatLengthBindable.Value);
                 };
 
                 beatLengthBindable.BindValueChanged(val =>

osu.Game/Screens/Edit/Timing/TimingSectionAdjustments.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 System.Linq;
+using osu.Framework.Utils;
+using osu.Game.Beatmaps;
+using osu.Game.Beatmaps.ControlPoints;
+using osu.Game.Rulesets.Objects;
+using osu.Game.Rulesets.Objects.Types;
+
+namespace osu.Game.Screens.Edit.Timing
+{
+    public static class TimingSectionAdjustments
+    {
+        /// <summary>
+        /// Returns all objects from <paramref name="beatmap"/> which are affected by the supplied <paramref name="timingControlPoint"/>.
+        /// </summary>
+        public static List<HitObject> HitObjectsInTimingRange(IBeatmap beatmap, TimingControlPoint timingControlPoint)
+        {
+            // If the first group, we grab all hitobjects prior to the next, if the last group, we grab all remaining hitobjects
+            double startTime = beatmap.ControlPointInfo.TimingPoints.Any(x => x.Time < timingControlPoint.Time) ? timingControlPoint.Time : double.MinValue;
+            double endTime = beatmap.ControlPointInfo.TimingPoints.FirstOrDefault(x => x.Time > timingControlPoint.Time)?.Time ?? double.MaxValue;
+
+            return beatmap.HitObjects.Where(x => Precision.AlmostBigger(x.StartTime, startTime) && Precision.DefinitelyBigger(endTime, x.StartTime)).ToList();
+        }
+
+        /// <summary>
+        /// Moves all relevant objects after <paramref name="timingControlPoint"/>'s offset has been changed by <paramref name="adjustment"/>.
+        /// </summary>
+        public static void AdjustHitObjectOffset(IBeatmap beatmap, TimingControlPoint timingControlPoint, double adjustment)
+        {
+            foreach (HitObject hitObject in HitObjectsInTimingRange(beatmap, timingControlPoint))
+            {
+                hitObject.StartTime += adjustment;
+            }
+        }
+
+        /// <summary>
+        /// Ensures all relevant objects are still snapped to the same beats after <paramref name="timingControlPoint"/>'s beat length / BPM has been changed.
+        /// </summary>
+        public static void SetHitObjectBPM(IBeatmap beatmap, TimingControlPoint timingControlPoint, double oldBeatLength)
+        {
+            foreach (HitObject hitObject in HitObjectsInTimingRange(beatmap, timingControlPoint))
+            {
+                double beat = (hitObject.StartTime - timingControlPoint.Time) / oldBeatLength;
+
+                hitObject.StartTime = (beat * timingControlPoint.BeatLength) + timingControlPoint.Time;
+
+                if (hitObject is not IHasRepeats && hitObject is IHasDuration hitObjectWithDuration)
+                    hitObjectWithDuration.Duration *= timingControlPoint.BeatLength / oldBeatLength;
+            }
+        }
+    }
+}

osu.Game/Screens/Menu/StorageErrorDialog.cs

@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Graphics.Sprites;
+using osu.Game.Database;
 using osu.Game.IO;
 using osu.Game.Localisation;
 using osu.Game.Overlays;
@@ -16,6 +17,9 @@ namespace osu.Game.Screens.Menu
         [Resolved]
         private IDialogOverlay dialogOverlay { get; set; } = null!;
 
+        [Resolved]
+        private RealmAccess realmAccess { get; set; } = null!;
+
         public StorageErrorDialog(OsuStorage storage, OsuStorageError error)
         {
             HeaderText = StorageErrorDialogStrings.StorageError;
@@ -35,7 +39,15 @@ namespace osu.Game.Screens.Menu
                             Text = StorageErrorDialogStrings.TryAgain,
                             Action = () =>
                             {
-                                if (!storage.TryChangeToCustomStorage(out var nextError))
+                                bool success;
+                                OsuStorageError nextError;
+
+                                // blocking all operations has a side effect of closing & reopening the realm db,
+                                // which is desirable here since the restoration of the old storage - if it succeeds - means the realm db has moved.
+                                using (realmAccess.BlockAllOperations(@"restoration of previously unavailable storage"))
+                                    success = storage.TryChangeToCustomStorage(out nextError);
+
+                                if (!success)
                                     dialogOverlay.Push(new StorageErrorDialog(storage, nextError));
                             }
                         },

osu.Game/Screens/OnlinePlay/Lounge/Components/RankRangePill.cs

@@ -1,23 +1,25 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Linq;
 using osu.Framework.Allocation;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Sprites;
 using osu.Game.Graphics;
 using osu.Game.Graphics.Containers;
-using osu.Game.Screens.OnlinePlay.Multiplayer;
+using osu.Game.Online.Multiplayer;
 using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Lounge.Components
 {
-    public partial class RankRangePill : MultiplayerRoomComposite
+    public partial class RankRangePill : CompositeDrawable
     {
-        private OsuTextFlowContainer rankFlow;
+        private OsuTextFlowContainer rankFlow = null!;
+
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
 
         public RankRangePill()
         {
@@ -55,20 +57,28 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
             };
         }
 
-        protected override void OnRoomUpdated()
+        protected override void LoadComplete()
         {
-            base.OnRoomUpdated();
+            base.LoadComplete();
 
+            client.RoomUpdated += onRoomUpdated;
+            updateState();
+        }
+
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
+
+        private void updateState()
+        {
             rankFlow.Clear();
 
-            if (Room == null || Room.Users.All(u => u.User == null))
+            if (client.Room == null || client.Room.Users.All(u => u.User == null))
             {
                 rankFlow.AddText("-");
                 return;
             }
 
-            int minRank = Room.Users.Select(u => u.User?.Statistics.GlobalRank ?? 0).DefaultIfEmpty(0).Min();
-            int maxRank = Room.Users.Select(u => u.User?.Statistics.GlobalRank ?? 0).DefaultIfEmpty(0).Max();
+            int minRank = client.Room.Users.Select(u => u.User?.Statistics.GlobalRank ?? 0).DefaultIfEmpty(0).Min();
+            int maxRank = client.Room.Users.Select(u => u.User?.Statistics.GlobalRank ?? 0).DefaultIfEmpty(0).Max();
 
             rankFlow.AddText("#");
             rankFlow.AddText(minRank.ToString("#,0"), s => s.Font = s.Font.With(weight: FontWeight.Bold));
@@ -78,5 +88,13 @@ namespace osu.Game.Screens.OnlinePlay.Lounge.Components
             rankFlow.AddText("#");
             rankFlow.AddText(maxRank.ToString("#,0"), s => s.Font = s.Font.With(weight: FontWeight.Bold));
         }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+                client.RoomUpdated -= onRoomUpdated;
+        }
     }
 }

osu.Game/Screens/OnlinePlay/Multiplayer/Match/MatchStartControl.cs

@@ -1,47 +1,50 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System;
 using System.Diagnostics;
 using System.Linq;
-using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
 using osu.Framework.Bindables;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Threading;
 using osu.Game.Online.Multiplayer;
 using osu.Game.Online.Multiplayer.Countdown;
+using osu.Game.Online.Rooms;
 using osu.Game.Overlays;
 using osu.Game.Overlays.Dialog;
 using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
-    public partial class MatchStartControl : MultiplayerRoomComposite
+    public partial class MatchStartControl : CompositeDrawable
     {
         [Resolved]
-        private OngoingOperationTracker ongoingOperationTracker { get; set; }
-
-        [CanBeNull]
-        private IDisposable clickOperation;
+        private OngoingOperationTracker ongoingOperationTracker { get; set; } = null!;
 
         [Resolved(canBeNull: true)]
-        private IDialogOverlay dialogOverlay { get; set; }
+        private IDialogOverlay? dialogOverlay { get; set; }
 
-        private Sample sampleReady;
-        private Sample sampleReadyAll;
-        private Sample sampleUnready;
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
+
+        [Resolved]
+        private IBindable<PlaylistItem?> currentItem { get; set; } = null!;
 
         private readonly MultiplayerReadyButton readyButton;
         private readonly MultiplayerCountdownButton countdownButton;
+
+        private IBindable<bool> operationInProgress = null!;
+        private ScheduledDelegate? readySampleDelegate;
+        private IDisposable? clickOperation;
+        private Sample? sampleReady;
+        private Sample? sampleReadyAll;
+        private Sample? sampleUnready;
         private int countReady;
-        private ScheduledDelegate readySampleDelegate;
-        private IBindable<bool> operationInProgress;
 
         public MatchStartControl()
         {
@@ -91,34 +94,29 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
         {
             base.LoadComplete();
 
-            CurrentPlaylistItem.BindValueChanged(_ => updateState());
-        }
-
-        protected override void OnRoomUpdated()
-        {
-            base.OnRoomUpdated();
+            currentItem.BindValueChanged(_ => updateState());
+            client.RoomUpdated += onRoomUpdated;
+            client.LoadRequested += onLoadRequested;
             updateState();
         }
 
-        protected override void OnRoomLoadRequested()
-        {
-            base.OnRoomLoadRequested();
-            endOperation();
-        }
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
+
+        private void onLoadRequested() => Scheduler.AddOnce(endOperation);
 
         private void onReadyButtonClick()
         {
-            if (Room == null)
+            if (client.Room == null)
                 return;
 
             Debug.Assert(clickOperation == null);
             clickOperation = ongoingOperationTracker.BeginOperation();
 
-            if (Client.IsHost)
+            if (client.IsHost)
             {
-                if (Room.State == MultiplayerRoomState.Open)
+                if (client.Room.State == MultiplayerRoomState.Open)
                 {
-                    if (isReady() && !Room.ActiveCountdowns.Any(c => c is MatchStartCountdown))
+                    if (isReady() && !client.Room.ActiveCountdowns.Any(c => c is MatchStartCountdown))
                         startMatch();
                     else
                         toggleReady();
@@ -131,16 +129,16 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                         dialogOverlay.Push(new ConfirmAbortDialog(abortMatch, endOperation));
                 }
             }
-            else if (Room.State != MultiplayerRoomState.Closed)
+            else if (client.Room.State != MultiplayerRoomState.Closed)
                 toggleReady();
 
-            bool isReady() => Client.LocalUser?.State == MultiplayerUserState.Ready || Client.LocalUser?.State == MultiplayerUserState.Spectating;
+            bool isReady() => client.LocalUser?.State == MultiplayerUserState.Ready || client.LocalUser?.State == MultiplayerUserState.Spectating;
 
-            void toggleReady() => Client.ToggleReady().FireAndForget(
+            void toggleReady() => client.ToggleReady().FireAndForget(
                 onSuccess: endOperation,
                 onError: _ => endOperation());
 
-            void startMatch() => Client.StartMatch().FireAndForget(onSuccess: () =>
+            void startMatch() => client.StartMatch().FireAndForget(onSuccess: () =>
             {
                 // gameplay is starting, the button will be unblocked on load requested.
             }, onError: _ =>
@@ -149,7 +147,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                 endOperation();
             });
 
-            void abortMatch() => Client.AbortMatch().FireAndForget(endOperation, _ => endOperation());
+            void abortMatch() => client.AbortMatch().FireAndForget(endOperation, _ => endOperation());
         }
 
         private void startCountdown(TimeSpan duration)
@@ -157,19 +155,19 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
             Debug.Assert(clickOperation == null);
             clickOperation = ongoingOperationTracker.BeginOperation();
 
-            Client.SendMatchRequest(new StartMatchCountdownRequest { Duration = duration }).ContinueWith(_ => endOperation());
+            client.SendMatchRequest(new StartMatchCountdownRequest { Duration = duration }).ContinueWith(_ => endOperation());
         }
 
         private void cancelCountdown()
         {
-            if (Client.Room == null)
+            if (client.Room == null)
                 return;
 
             Debug.Assert(clickOperation == null);
             clickOperation = ongoingOperationTracker.BeginOperation();
 
-            MultiplayerCountdown countdown = Client.Room.ActiveCountdowns.Single(c => c is MatchStartCountdown);
-            Client.SendMatchRequest(new StopCountdownRequest(countdown.ID)).ContinueWith(_ => endOperation());
+            MultiplayerCountdown countdown = client.Room.ActiveCountdowns.Single(c => c is MatchStartCountdown);
+            client.SendMatchRequest(new StopCountdownRequest(countdown.ID)).ContinueWith(_ => endOperation());
         }
 
         private void endOperation()
@@ -180,19 +178,19 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 
         private void updateState()
         {
-            if (Room == null)
+            if (client.Room == null)
             {
                 readyButton.Enabled.Value = false;
                 countdownButton.Enabled.Value = false;
                 return;
             }
 
-            var localUser = Client.LocalUser;
+            var localUser = client.LocalUser;
 
-            int newCountReady = Room.Users.Count(u => u.State == MultiplayerUserState.Ready);
-            int newCountTotal = Room.Users.Count(u => u.State != MultiplayerUserState.Spectating);
+            int newCountReady = client.Room.Users.Count(u => u.State == MultiplayerUserState.Ready);
+            int newCountTotal = client.Room.Users.Count(u => u.State != MultiplayerUserState.Spectating);
 
-            if (!Client.IsHost || Room.Settings.AutoStartEnabled)
+            if (!client.IsHost || client.Room.Settings.AutoStartEnabled)
                 countdownButton.Hide();
             else
             {
@@ -211,21 +209,21 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
             }
 
             readyButton.Enabled.Value = countdownButton.Enabled.Value =
-                Room.State != MultiplayerRoomState.Closed
-                && CurrentPlaylistItem.Value?.ID == Room.Settings.PlaylistItemId
-                && !Room.Playlist.Single(i => i.ID == Room.Settings.PlaylistItemId).Expired
+                client.Room.State != MultiplayerRoomState.Closed
+                && currentItem.Value?.ID == client.Room.Settings.PlaylistItemId
+                && !client.Room.Playlist.Single(i => i.ID == client.Room.Settings.PlaylistItemId).Expired
                 && !operationInProgress.Value;
 
             // When the local user is the host and spectating the match, the ready button should be enabled only if any users are ready.
             if (localUser?.State == MultiplayerUserState.Spectating)
-                readyButton.Enabled.Value &= Client.IsHost && newCountReady > 0 && !Room.ActiveCountdowns.Any(c => c is MatchStartCountdown);
+                readyButton.Enabled.Value &= client.IsHost && newCountReady > 0 && !client.Room.ActiveCountdowns.Any(c => c is MatchStartCountdown);
 
             // When the local user is not the host, the button should only be enabled when no match is in progress.
-            if (!Client.IsHost)
-                readyButton.Enabled.Value &= Room.State == MultiplayerRoomState.Open;
+            if (!client.IsHost)
+                readyButton.Enabled.Value &= client.Room.State == MultiplayerRoomState.Open;
 
             // At all times, the countdown button should only be enabled when no match is in progress.
-            countdownButton.Enabled.Value &= Room.State == MultiplayerRoomState.Open;
+            countdownButton.Enabled.Value &= client.Room.State == MultiplayerRoomState.Open;
 
             if (newCountReady == countReady)
                 return;
@@ -249,6 +247,17 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
             });
         }
 
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+            {
+                client.RoomUpdated -= onRoomUpdated;
+                client.LoadRequested -= onLoadRequested;
+            }
+        }
+
         public partial class ConfirmAbortDialog : DangerousActionDialog
         {
             public ConfirmAbortDialog(Action abortMatch, Action cancel)

osu.Game/Screens/OnlinePlay/Multiplayer/Match/MultiplayerSpectateButton.cs

@@ -5,7 +5,9 @@ using System.Threading;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Extensions;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Containers;
 using osu.Game.Beatmaps;
 using osu.Game.Configuration;
 using osu.Game.Database;
@@ -17,7 +19,7 @@ using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 {
-    public partial class MultiplayerSpectateButton : MultiplayerRoomComposite
+    public partial class MultiplayerSpectateButton : CompositeDrawable
     {
         [Resolved]
         private OngoingOperationTracker ongoingOperationTracker { get; set; } = null!;
@@ -25,6 +27,12 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
         [Resolved]
         private OsuColour colours { get; set; } = null!;
 
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
+
+        [Resolved]
+        private IBindable<PlaylistItem?> currentItem { get; set; } = null!;
+
         private IBindable<bool> operationInProgress = null!;
 
         private readonly RoundedButton button;
@@ -44,7 +52,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
         {
             var clickOperation = ongoingOperationTracker.BeginOperation();
 
-            Client.ToggleSpectate().ContinueWith(_ => endOperation());
+            client.ToggleSpectate().ContinueWith(_ => endOperation());
 
             void endOperation() => clickOperation?.Dispose();
         }
@@ -63,19 +71,16 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
         {
             base.LoadComplete();
 
-            CurrentPlaylistItem.BindValueChanged(_ => Scheduler.AddOnce(checkForAutomaticDownload), true);
-        }
-
-        protected override void OnRoomUpdated()
-        {
-            base.OnRoomUpdated();
-
+            currentItem.BindValueChanged(_ => Scheduler.AddOnce(checkForAutomaticDownload), true);
+            client.RoomUpdated += onRoomUpdated;
             updateState();
         }
 
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
+
         private void updateState()
         {
-            switch (Client.LocalUser?.State)
+            switch (client.LocalUser?.State)
             {
                 default:
                     button.Text = "Spectate";
@@ -88,8 +93,8 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
                     break;
             }
 
-            button.Enabled.Value = Client.Room != null
-                                   && Client.Room.State != MultiplayerRoomState.Closed
+            button.Enabled.Value = client.Room != null
+                                   && client.Room.State != MultiplayerRoomState.Closed
                                    && !operationInProgress.Value;
 
             Scheduler.AddOnce(checkForAutomaticDownload);
@@ -112,11 +117,11 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
 
         private void checkForAutomaticDownload()
         {
-            PlaylistItem? currentItem = CurrentPlaylistItem.Value;
+            PlaylistItem? item = currentItem.Value;
 
             downloadCheckCancellation?.Cancel();
 
-            if (currentItem == null)
+            if (item == null)
                 return;
 
             if (!automaticallyDownload.Value)
@@ -128,13 +133,13 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
             //
             // Rather than over-complicating this flow, let's only auto-download when spectating for the time being.
             // A potential path forward would be to have a local auto-download checkbox above the playlist item list area.
-            if (Client.LocalUser?.State != MultiplayerUserState.Spectating)
+            if (client.LocalUser?.State != MultiplayerUserState.Spectating)
                 return;
 
             // In a perfect world we'd use BeatmapAvailability, but there's no event-driven flow for when a selection changes.
             // ie. if selection changes from "not downloaded" to another "not downloaded" we wouldn't get a value changed raised.
             beatmapLookupCache
-                .GetBeatmapAsync(currentItem.Beatmap.OnlineID, (downloadCheckCancellation = new CancellationTokenSource()).Token)
+                .GetBeatmapAsync(item.Beatmap.OnlineID, (downloadCheckCancellation = new CancellationTokenSource()).Token)
                 .ContinueWith(resolved => Schedule(() =>
                 {
                     var beatmapSet = resolved.GetResultSafely()?.BeatmapSet;
@@ -150,5 +155,13 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match
         }
 
         #endregion
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+                client.RoomUpdated -= onRoomUpdated;
+        }
     }
 }

osu.Game/Screens/OnlinePlay/Multiplayer/Match/Playlist/MultiplayerPlaylist.cs

@@ -1,8 +1,6 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System;
 using System.Linq;
 using osu.Framework.Allocation;
@@ -17,18 +15,24 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
     /// <summary>
     /// The multiplayer playlist, containing lists to show the items from a <see cref="MultiplayerRoom"/> in both gameplay-order and historical-order.
     /// </summary>
-    public partial class MultiplayerPlaylist : MultiplayerRoomComposite
+    public partial class MultiplayerPlaylist : CompositeDrawable
     {
         public readonly Bindable<MultiplayerPlaylistDisplayMode> DisplayMode = new Bindable<MultiplayerPlaylistDisplayMode>();
 
         /// <summary>
         /// Invoked when an item requests to be edited.
         /// </summary>
-        public Action<PlaylistItem> RequestEdit;
+        public Action<PlaylistItem>? RequestEdit;
 
-        private MultiplayerPlaylistTabControl playlistTabControl;
-        private MultiplayerQueueList queueList;
-        private MultiplayerHistoryList historyList;
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
+
+        [Resolved]
+        private IBindable<PlaylistItem?> currentItem { get; set; } = null!;
+
+        private MultiplayerPlaylistTabControl playlistTabControl = null!;
+        private MultiplayerQueueList queueList = null!;
+        private MultiplayerHistoryList historyList = null!;
         private bool firstPopulation = true;
 
         [BackgroundDependencyLoader]
@@ -54,14 +58,14 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
                         queueList = new MultiplayerQueueList
                         {
                             RelativeSizeAxes = Axes.Both,
-                            SelectedItem = { BindTarget = CurrentPlaylistItem },
+                            SelectedItem = { BindTarget = currentItem },
                             RequestEdit = item => RequestEdit?.Invoke(item)
                         },
                         historyList = new MultiplayerHistoryList
                         {
                             RelativeSizeAxes = Axes.Both,
                             Alpha = 0,
-                            SelectedItem = { BindTarget = CurrentPlaylistItem }
+                            SelectedItem = { BindTarget = currentItem }
                         }
                     }
                 }
@@ -73,7 +77,13 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
         protected override void LoadComplete()
         {
             base.LoadComplete();
+
             DisplayMode.BindValueChanged(onDisplayModeChanged, true);
+            client.ItemAdded += playlistItemAdded;
+            client.ItemRemoved += playlistItemRemoved;
+            client.ItemChanged += playlistItemChanged;
+            client.RoomUpdated += onRoomUpdated;
+            updateState();
         }
 
         private void onDisplayModeChanged(ValueChangedEvent<MultiplayerPlaylistDisplayMode> mode)
@@ -82,11 +92,11 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
             queueList.FadeTo(mode.NewValue == MultiplayerPlaylistDisplayMode.Queue ? 1 : 0, 100);
         }
 
-        protected override void OnRoomUpdated()
-        {
-            base.OnRoomUpdated();
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
 
-            if (Room == null)
+        private void updateState()
+        {
+            if (client.Room == null)
             {
                 historyList.Items.Clear();
                 queueList.Items.Clear();
@@ -96,34 +106,27 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
 
             if (firstPopulation)
             {
-                foreach (var item in Room.Playlist)
+                foreach (var item in client.Room.Playlist)
                     addItemToLists(item);
 
                 firstPopulation = false;
             }
         }
 
-        protected override void PlaylistItemAdded(MultiplayerPlaylistItem item)
-        {
-            base.PlaylistItemAdded(item);
-            addItemToLists(item);
-        }
+        private void playlistItemAdded(MultiplayerPlaylistItem item) => Schedule(() => addItemToLists(item));
 
-        protected override void PlaylistItemRemoved(long item)
-        {
-            base.PlaylistItemRemoved(item);
-            removeItemFromLists(item);
-        }
+        private void playlistItemRemoved(long item) => Schedule(() => removeItemFromLists(item));
 
-        protected override void PlaylistItemChanged(MultiplayerPlaylistItem item)
+        private void playlistItemChanged(MultiplayerPlaylistItem item) => Schedule(() =>
         {
-            base.PlaylistItemChanged(item);
+            if (client.Room == null)
+                return;
 
-            var newApiItem = Playlist.SingleOrDefault(i => i.ID == item.ID);
+            var newApiItem = new PlaylistItem(item);
             var existingApiItemInQueue = queueList.Items.SingleOrDefault(i => i.ID == item.ID);
 
             // Test if the only change between the two playlist items is the order.
-            if (newApiItem != null && existingApiItemInQueue != null && existingApiItemInQueue.With(playlistOrder: newApiItem.PlaylistOrder).Equals(newApiItem))
+            if (existingApiItemInQueue != null && existingApiItemInQueue.With(playlistOrder: newApiItem.PlaylistOrder).Equals(newApiItem))
             {
                 // Set the new playlist order directly without refreshing the DrawablePlaylistItem.
                 existingApiItemInQueue.PlaylistOrder = newApiItem.PlaylistOrder;
@@ -137,20 +140,20 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Match.Playlist
                 removeItemFromLists(item.ID);
                 addItemToLists(item);
             }
-        }
+        });
 
         private void addItemToLists(MultiplayerPlaylistItem item)
         {
-            var apiItem = Playlist.SingleOrDefault(i => i.ID == item.ID);
+            var apiItem = client.Room?.Playlist.SingleOrDefault(i => i.ID == item.ID);
 
             // Item could have been removed from the playlist while the local player was in gameplay.
             if (apiItem == null)
                 return;
 
             if (item.Expired)
-                historyList.Items.Add(apiItem);
+                historyList.Items.Add(new PlaylistItem(apiItem));
             else
-                queueList.Items.Add(apiItem);
+                queueList.Items.Add(new PlaylistItem(apiItem));
         }
 
         private void removeItemFromLists(long item)

osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomComposite.cs

@@ -1,125 +0,0 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
-// See the LICENCE file in the repository root for full licence text.
-
-#nullable disable
-
-using JetBrains.Annotations;
-using osu.Framework.Allocation;
-using osu.Game.Online.Multiplayer;
-using osu.Game.Online.Rooms;
-
-namespace osu.Game.Screens.OnlinePlay.Multiplayer
-{
-    public abstract partial class MultiplayerRoomComposite : OnlinePlayComposite
-    {
-        [CanBeNull]
-        protected MultiplayerRoom Room => Client.Room;
-
-        [Resolved]
-        protected MultiplayerClient Client { get; private set; }
-
-        protected override void LoadComplete()
-        {
-            base.LoadComplete();
-
-            Client.RoomUpdated += invokeOnRoomUpdated;
-            Client.LoadRequested += invokeOnRoomLoadRequested;
-            Client.UserLeft += invokeUserLeft;
-            Client.UserKicked += invokeUserKicked;
-            Client.UserJoined += invokeUserJoined;
-            Client.ItemAdded += invokeItemAdded;
-            Client.ItemRemoved += invokeItemRemoved;
-            Client.ItemChanged += invokeItemChanged;
-
-            OnRoomUpdated();
-        }
-
-        private void invokeOnRoomUpdated() => Scheduler.AddOnce(OnRoomUpdated);
-        private void invokeUserJoined(MultiplayerRoomUser user) => Scheduler.Add(() => UserJoined(user));
-        private void invokeUserKicked(MultiplayerRoomUser user) => Scheduler.Add(() => UserKicked(user));
-        private void invokeUserLeft(MultiplayerRoomUser user) => Scheduler.Add(() => UserLeft(user));
-        private void invokeItemAdded(MultiplayerPlaylistItem item) => Schedule(() => PlaylistItemAdded(item));
-        private void invokeItemRemoved(long item) => Schedule(() => PlaylistItemRemoved(item));
-        private void invokeItemChanged(MultiplayerPlaylistItem item) => Schedule(() => PlaylistItemChanged(item));
-        private void invokeOnRoomLoadRequested() => Scheduler.AddOnce(OnRoomLoadRequested);
-
-        /// <summary>
-        /// Invoked when a user has joined the room.
-        /// </summary>
-        /// <param name="user">The user.</param>
-        protected virtual void UserJoined(MultiplayerRoomUser user)
-        {
-        }
-
-        /// <summary>
-        /// Invoked when a user has been kicked from the room (including the local user).
-        /// </summary>
-        /// <param name="user">The user.</param>
-        protected virtual void UserKicked(MultiplayerRoomUser user)
-        {
-        }
-
-        /// <summary>
-        /// Invoked when a user has left the room.
-        /// </summary>
-        /// <param name="user">The user.</param>
-        protected virtual void UserLeft(MultiplayerRoomUser user)
-        {
-        }
-
-        /// <summary>
-        /// Invoked when a playlist item is added to the room.
-        /// </summary>
-        /// <param name="item">The added playlist item.</param>
-        protected virtual void PlaylistItemAdded(MultiplayerPlaylistItem item)
-        {
-        }
-
-        /// <summary>
-        /// Invoked when a playlist item is removed from the room.
-        /// </summary>
-        /// <param name="item">The ID of the removed playlist item.</param>
-        protected virtual void PlaylistItemRemoved(long item)
-        {
-        }
-
-        /// <summary>
-        /// Invoked when a playlist item is changed in the room.
-        /// </summary>
-        /// <param name="item">The new playlist item, with an existing item's ID.</param>
-        protected virtual void PlaylistItemChanged(MultiplayerPlaylistItem item)
-        {
-        }
-
-        /// <summary>
-        /// Invoked when any change occurs to the multiplayer room.
-        /// </summary>
-        protected virtual void OnRoomUpdated()
-        {
-        }
-
-        /// <summary>
-        /// Invoked when the room requests the local user to load into gameplay.
-        /// </summary>
-        protected virtual void OnRoomLoadRequested()
-        {
-        }
-
-        protected override void Dispose(bool isDisposing)
-        {
-            if (Client != null)
-            {
-                Client.RoomUpdated -= invokeOnRoomUpdated;
-                Client.LoadRequested -= invokeOnRoomLoadRequested;
-                Client.UserLeft -= invokeUserLeft;
-                Client.UserKicked -= invokeUserKicked;
-                Client.UserJoined -= invokeUserJoined;
-                Client.ItemAdded -= invokeItemAdded;
-                Client.ItemRemoved -= invokeItemRemoved;
-                Client.ItemChanged -= invokeItemChanged;
-            }
-
-            base.Dispose(isDisposing);
-        }
-    }
-}

osu.Game/Screens/OnlinePlay/Multiplayer/MultiplayerRoomSounds.cs

@@ -1,23 +1,26 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
+using System.Collections.Generic;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
-using osu.Framework.Bindables;
-using osu.Game.Online.API.Requests.Responses;
+using osu.Framework.Extensions.ObjectExtensions;
+using osu.Framework.Graphics.Containers;
 using osu.Game.Online.Multiplayer;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer
 {
-    public partial class MultiplayerRoomSounds : MultiplayerRoomComposite
+    public partial class MultiplayerRoomSounds : CompositeDrawable
     {
-        private Sample hostChangedSample;
-        private Sample userJoinedSample;
-        private Sample userLeftSample;
-        private Sample userKickedSample;
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
+
+        private Sample? hostChangedSample;
+        private Sample? userJoinedSample;
+        private Sample? userLeftSample;
+        private Sample? userKickedSample;
+        private MultiplayerRoomUser? host;
 
         [BackgroundDependencyLoader]
         private void load(AudioManager audio)
@@ -32,36 +35,47 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer
         {
             base.LoadComplete();
 
-            Host.BindValueChanged(hostChanged);
+            client.RoomUpdated += onRoomUpdated;
+            client.UserJoined += onUserJoined;
+            client.UserLeft += onUserLeft;
+            client.UserKicked += onUserKicked;
+            updateState();
         }
 
-        protected override void UserJoined(MultiplayerRoomUser user)
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
+
+        private void updateState()
         {
-            base.UserJoined(user);
+            if (EqualityComparer<MultiplayerRoomUser>.Default.Equals(host, client.Room?.Host))
+                return;
 
-            Scheduler.AddOnce(() => userJoinedSample?.Play());
-        }
-
-        protected override void UserLeft(MultiplayerRoomUser user)
-        {
-            base.UserLeft(user);
-
-            Scheduler.AddOnce(() => userLeftSample?.Play());
-        }
-
-        protected override void UserKicked(MultiplayerRoomUser user)
-        {
-            base.UserKicked(user);
-
-            Scheduler.AddOnce(() => userKickedSample?.Play());
-        }
-
-        private void hostChanged(ValueChangedEvent<APIUser> value)
-        {
             // only play sound when the host changes from an already-existing host.
-            if (value.OldValue == null) return;
+            if (host != null)
+                Scheduler.AddOnce(() => hostChangedSample?.Play());
 
-            Scheduler.AddOnce(() => hostChangedSample?.Play());
+            host = client.Room?.Host;
+        }
+
+        private void onUserJoined(MultiplayerRoomUser user)
+            => Scheduler.AddOnce(() => userJoinedSample?.Play());
+
+        private void onUserLeft(MultiplayerRoomUser user)
+            => Scheduler.AddOnce(() => userLeftSample?.Play());
+
+        private void onUserKicked(MultiplayerRoomUser user)
+            => Scheduler.AddOnce(() => userKickedSample?.Play());
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+            {
+                client.RoomUpdated -= onRoomUpdated;
+                client.UserJoined -= onUserJoined;
+                client.UserLeft -= onUserLeft;
+                client.UserKicked -= onUserKicked;
+            }
         }
     }
 }

osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantPanel.cs

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Extensions.Color4Extensions;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -30,7 +31,7 @@ using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
 {
-    public partial class ParticipantPanel : MultiplayerRoomComposite, IHasContextMenu
+    public partial class ParticipantPanel : CompositeDrawable, IHasContextMenu
     {
         public readonly MultiplayerRoomUser User;
 
@@ -40,6 +41,9 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
         [Resolved]
         private IRulesetStore rulesets { get; set; } = null!;
 
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
+
         private SpriteIcon crown = null!;
 
         private OsuSpriteText userRankText = null!;
@@ -171,23 +175,31 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                             Origin = Anchor.Centre,
                             Alpha = 0,
                             Margin = new MarginPadding(4),
-                            Action = () => Client.KickUser(User.UserID).FireAndForget(),
+                            Action = () => client.KickUser(User.UserID).FireAndForget(),
                         },
                     },
                 }
             };
         }
 
-        protected override void OnRoomUpdated()
+        protected override void LoadComplete()
         {
-            base.OnRoomUpdated();
+            base.LoadComplete();
 
-            if (Room == null || Client.LocalUser == null)
+            client.RoomUpdated += onRoomUpdated;
+            updateState();
+        }
+
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
+
+        private void updateState()
+        {
+            if (client.Room == null || client.LocalUser == null)
                 return;
 
             const double fade_time = 50;
 
-            var currentItem = Playlist.GetCurrentItem();
+            MultiplayerPlaylistItem? currentItem = client.Room.GetCurrentItem();
             Ruleset? ruleset = currentItem != null ? rulesets.GetRuleset(currentItem.RulesetID)?.CreateInstance() : null;
 
             int? currentModeRank = ruleset != null ? User.User?.RulesetsStatistics?.GetValueOrDefault(ruleset.ShortName)?.GlobalRank : null;
@@ -200,8 +212,8 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
             else
                 userModsDisplay.FadeOut(fade_time);
 
-            kickButton.Alpha = Client.IsHost && !User.Equals(Client.LocalUser) ? 1 : 0;
-            crown.Alpha = Room.Host?.Equals(User) == true ? 1 : 0;
+            kickButton.Alpha = client.IsHost && !User.Equals(client.LocalUser) ? 1 : 0;
+            crown.Alpha = client.Room.Host?.Equals(User) == true ? 1 : 0;
 
             // If the mods are updated at the end of the frame, the flow container will skip a reflow cycle: https://github.com/ppy/osu-framework/issues/4187
             // This looks particularly jarring here, so re-schedule the update to that start of our frame as a fix.
@@ -215,7 +227,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
         {
             get
             {
-                if (Room == null)
+                if (client.Room == null)
                     return null;
 
                 // If the local user is targetted.
@@ -223,7 +235,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                     return null;
 
                 // If the local user is not the host of the room.
-                if (Room.Host?.UserID != api.LocalUser.Value.Id)
+                if (client.Room.Host?.UserID != api.LocalUser.Value.Id)
                     return null;
 
                 int targetUser = User.UserID;
@@ -233,23 +245,31 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                     new OsuMenuItem("Give host", MenuItemType.Standard, () =>
                     {
                         // Ensure the local user is still host.
-                        if (!Client.IsHost)
+                        if (!client.IsHost)
                             return;
 
-                        Client.TransferHost(targetUser).FireAndForget();
+                        client.TransferHost(targetUser).FireAndForget();
                     }),
                     new OsuMenuItem("Kick", MenuItemType.Destructive, () =>
                     {
                         // Ensure the local user is still host.
-                        if (!Client.IsHost)
+                        if (!client.IsHost)
                             return;
 
-                        Client.KickUser(targetUser).FireAndForget();
+                        client.KickUser(targetUser).FireAndForget();
                     })
                 };
             }
         }
 
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+                client.RoomUpdated -= onRoomUpdated;
+        }
+
         public partial class KickButton : IconButton
         {
             public KickButton()

osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantsList.cs

@@ -1,24 +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.
 
-#nullable disable
-
 using System.Linq;
-using JetBrains.Annotations;
 using osu.Framework.Allocation;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Game.Graphics.Containers;
+using osu.Game.Online.Multiplayer;
 using osuTK;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
 {
-    public partial class ParticipantsList : MultiplayerRoomComposite
+    public partial class ParticipantsList : CompositeDrawable
     {
-        private FillFlowContainer<ParticipantPanel> panels;
+        private FillFlowContainer<ParticipantPanel> panels = null!;
+        private ParticipantPanel? currentHostPanel;
 
-        [CanBeNull]
-        private ParticipantPanel currentHostPanel;
+        [Resolved]
+        private MultiplayerClient client { get; set; } = null!;
 
         [BackgroundDependencyLoader]
         private void load()
@@ -37,11 +37,19 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
             };
         }
 
-        protected override void OnRoomUpdated()
+        protected override void LoadComplete()
         {
-            base.OnRoomUpdated();
+            base.LoadComplete();
 
-            if (Room == null)
+            client.RoomUpdated += onRoomUpdated;
+            updateState();
+        }
+
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
+
+        private void updateState()
+        {
+            if (client.Room == null)
                 panels.Clear();
             else
             {
@@ -49,15 +57,15 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                 foreach (var p in panels)
                 {
                     // Note that we *must* use reference equality here, as this call is scheduled and a user may have left and joined since it was last run.
-                    if (Room.Users.All(u => !ReferenceEquals(p.User, u)))
+                    if (client.Room.Users.All(u => !ReferenceEquals(p.User, u)))
                         p.Expire();
                 }
 
                 // Add panels for all users new to the room.
-                foreach (var user in Room.Users.Except(panels.Select(p => p.User)))
+                foreach (var user in client.Room.Users.Except(panels.Select(p => p.User)))
                     panels.Add(new ParticipantPanel(user));
 
-                if (currentHostPanel == null || !currentHostPanel.User.Equals(Room.Host))
+                if (currentHostPanel == null || !currentHostPanel.User.Equals(client.Room.Host))
                 {
                     // Reset position of previous host back to normal, if one existing.
                     if (currentHostPanel != null && panels.Contains(currentHostPanel))
@@ -66,9 +74,9 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                     currentHostPanel = null;
 
                     // Change position of new host to display above all participants.
-                    if (Room.Host != null)
+                    if (client.Room.Host != null)
                     {
-                        currentHostPanel = panels.SingleOrDefault(u => u.User.Equals(Room.Host));
+                        currentHostPanel = panels.SingleOrDefault(u => u.User.Equals(client.Room.Host));
 
                         if (currentHostPanel != null)
                             panels.SetLayoutPosition(currentHostPanel, -1);
@@ -76,5 +84,13 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                 }
             }
         }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+                client.RoomUpdated -= onRoomUpdated;
+        }
     }
 }

osu.Game/Screens/OnlinePlay/Multiplayer/Participants/TeamDisplay.cs

@@ -1,12 +1,11 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-#nullable disable
-
 using System.Linq;
 using osu.Framework.Allocation;
 using osu.Framework.Audio;
 using osu.Framework.Audio.Sample;
+using osu.Framework.Extensions.ObjectExtensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Colour;
 using osu.Framework.Graphics.Containers;
@@ -20,27 +19,26 @@ using osuTK.Graphics;
 
 namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
 {
-    internal partial class TeamDisplay : MultiplayerRoomComposite
+    internal partial class TeamDisplay : CompositeDrawable
     {
         private readonly MultiplayerRoomUser user;
 
-        private Drawable box;
-
-        private Sample sampleTeamSwap;
+        [Resolved]
+        private OsuColour colours { get; set; } = null!;
 
         [Resolved]
-        private OsuColour colours { get; set; }
+        private MultiplayerClient client { get; set; } = null!;
 
-        private OsuClickableContainer clickableContent;
+        private OsuClickableContainer clickableContent = null!;
+        private Drawable box = null!;
+        private Sample? sampleTeamSwap;
 
         public TeamDisplay(MultiplayerRoomUser user)
         {
             this.user = user;
 
             RelativeSizeAxes = Axes.Y;
-
             AutoSizeAxes = Axes.X;
-
             Margin = new MarginPadding { Horizontal = 3 };
         }
 
@@ -71,7 +69,7 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                 }
             };
 
-            if (Client.LocalUser?.Equals(user) == true)
+            if (client.LocalUser?.Equals(user) == true)
             {
                 clickableContent.Action = changeTeam;
                 clickableContent.TooltipText = "Change team";
@@ -80,23 +78,31 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
             sampleTeamSwap = audio.Samples.Get(@"Multiplayer/team-swap");
         }
 
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
+
+            client.RoomUpdated += onRoomUpdated;
+            updateState();
+        }
+
         private void changeTeam()
         {
-            Client.SendMatchRequest(new ChangeTeamRequest
+            client.SendMatchRequest(new ChangeTeamRequest
             {
-                TeamID = ((Client.LocalUser?.MatchState as TeamVersusUserState)?.TeamID + 1) % 2 ?? 0,
+                TeamID = ((client.LocalUser?.MatchState as TeamVersusUserState)?.TeamID + 1) % 2 ?? 0,
             }).FireAndForget();
         }
 
         public int? DisplayedTeam { get; private set; }
 
-        protected override void OnRoomUpdated()
-        {
-            base.OnRoomUpdated();
+        private void onRoomUpdated() => Scheduler.AddOnce(updateState);
 
+        private void updateState()
+        {
             // we don't have a way of knowing when an individual user's state has updated, so just handle on RoomUpdated for now.
 
-            var userRoomState = Room?.Users.FirstOrDefault(u => u.Equals(user))?.MatchState;
+            var userRoomState = client.Room?.Users.FirstOrDefault(u => u.Equals(user))?.MatchState;
 
             const double duration = 400;
 
@@ -138,5 +144,13 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
                     return colours.Blue;
             }
         }
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            if (client.IsNotNull())
+                client.RoomUpdated -= onRoomUpdated;
+        }
     }
 }

osu.Game/Screens/Play/Break/BreakInfoLine.cs

@@ -63,7 +63,7 @@ namespace osu.Game.Screens.Play.Break
         protected virtual LocalisableString Format(T count)
         {
             if (count is Enum countEnum)
-                return countEnum.GetDescription();
+                return countEnum.GetLocalisableDescription();
 
             return count.ToString() ?? string.Empty;
         }

osu.Game/Screens/Play/HUD/GameplayLeaderboardScore.cs

@@ -316,7 +316,7 @@ namespace osu.Game.Screens.Play.HUD
 
             HasQuit.BindValueChanged(_ => updateState());
 
-            isFriend = User != null && api.Friends.Any(u => User.OnlineID == u.Id);
+            isFriend = User != null && api.Friends.Any(u => User.OnlineID == u.TargetID);
         }
 
         protected override void LoadComplete()

osu.Game/Screens/Play/HUDOverlay.cs

@@ -300,7 +300,9 @@ namespace osu.Game.Screens.Play
                     if (element is LegacyHealthDisplay)
                         return;
 
-                    float bottom = drawable.ScreenSpaceDrawQuad.BottomRight.Y;
+                    // AABB is used here because the drawable can be flipped/rotated arbitrarily,
+                    // so the "bottom right" corner of the raw SSDQ might not necessarily be where one expects it to be.
+                    float bottom = drawable.ScreenSpaceDrawQuad.AABBFloat.BottomRight.Y;
 
                     bool isRelativeX = drawable.RelativeSizeAxes == Axes.X;
 
@@ -319,7 +321,7 @@ namespace osu.Game.Screens.Play
                 // and align bottom-right components with the top-edge of the highest bottom-anchored hud element.
                 else if (drawable.Anchor.HasFlag(Anchor.BottomRight) || (drawable.Anchor.HasFlag(Anchor.y2) && drawable.RelativeSizeAxes == Axes.X))
                 {
-                    var topLeft = element.ScreenSpaceDrawQuad.TopLeft;
+                    var topLeft = element.ScreenSpaceDrawQuad.AABBFloat.TopLeft;
                     if (highestBottomScreenSpace == null || topLeft.Y < highestBottomScreenSpace.Value.Y)
                         highestBottomScreenSpace = topLeft;
                 }

osu.Game/Screens/Select/BeatmapCarousel.cs

@@ -216,7 +216,7 @@ namespace osu.Game.Screens.Select
 
         private int visibleSetsCount;
 
-        public BeatmapCarousel(FilterCriteria initialCriterial)
+        public BeatmapCarousel(FilterCriteria initialCriteria)
         {
             root = new CarouselRoot(this);
             InternalChild = new Container
@@ -239,7 +239,7 @@ namespace osu.Game.Screens.Select
                 }
             };
 
-            activeCriteria = initialCriterial;
+            activeCriteria = initialCriteria;
         }
 
         [BackgroundDependencyLoader]
@@ -1116,11 +1116,6 @@ namespace osu.Game.Screens.Select
             // adjusting the item's overall X position can cause it to become masked away when
             // child items (difficulties) are still visible.
             item.Header.X = offsetX(dist, visibleHalfHeight) - (parent?.X ?? 0);
-
-            // We are applying a multiplicative alpha (which is internally done by nesting an
-            // additional container and setting that container's alpha) such that we can
-            // layer alpha transformations on top.
-            item.SetMultiplicativeAlpha(Math.Clamp(1.75f - 1.5f * dist, 0, 1));
         }
 
         private enum PendingScrollOperation

osu.Game/Screens/Select/Carousel/DrawableCarouselBeatmap.cs

@@ -32,6 +32,8 @@ using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osuTK;
 using osuTK.Graphics;
+using CommonStrings = osu.Game.Localisation.CommonStrings;
+using WebCommonStrings = osu.Game.Resources.Localisation.Web.CommonStrings;
 
 namespace osu.Game.Screens.Select.Carousel
 {
@@ -296,10 +298,10 @@ namespace osu.Game.Screens.Select.Carousel
                 items.Add(new OsuMenuItem("Collections") { Items = collectionItems });
 
                 if (beatmapInfo.GetOnlineURL(api, ruleset.Value) is string url)
-                    items.Add(new OsuMenuItem("Copy link", MenuItemType.Standard, () => game?.CopyUrlToClipboard(url)));
+                    items.Add(new OsuMenuItem(CommonStrings.CopyLink, MenuItemType.Standard, () => game?.CopyUrlToClipboard(url)));
 
                 if (hideRequested != null)
-                    items.Add(new OsuMenuItem(CommonStrings.ButtonsHide.ToSentence(), MenuItemType.Destructive, () => hideRequested(beatmapInfo)));
+                    items.Add(new OsuMenuItem(WebCommonStrings.ButtonsHide.ToSentence(), MenuItemType.Destructive, () => hideRequested(beatmapInfo)));
 
                 return items.ToArray();
             }

osu.Game/Screens/Select/Carousel/DrawableCarouselBeatmapSet.cs

@@ -20,6 +20,7 @@ using osu.Game.Beatmaps;
 using osu.Game.Collections;
 using osu.Game.Database;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Localisation;
 using osu.Game.Online.API;
 using osu.Game.Overlays;
 using osu.Game.Rulesets;
@@ -300,7 +301,7 @@ namespace osu.Game.Screens.Select.Carousel
                     items.Add(new OsuMenuItem("Restore all hidden", MenuItemType.Standard, () => restoreHiddenRequested(beatmapSet)));
 
                 if (beatmapSet.GetOnlineURL(api, ruleset.Value) is string url)
-                    items.Add(new OsuMenuItem("Copy link", MenuItemType.Standard, () => game?.CopyUrlToClipboard(url)));
+                    items.Add(new OsuMenuItem(CommonStrings.CopyLink, MenuItemType.Standard, () => game?.CopyUrlToClipboard(url)));
 
                 if (dialogOverlay != null)
                     items.Add(new OsuMenuItem("Delete...", MenuItemType.Destructive, () => dialogOverlay.Push(new BeatmapDeleteDialog(beatmapSet))));

osu.Game/Screens/Select/Carousel/DrawableCarouselItem.cs

@@ -86,8 +86,6 @@ namespace osu.Game.Screens.Select.Carousel
             };
         }
 
-        public void SetMultiplicativeAlpha(float alpha) => Header.BorderContainer.Alpha = alpha;
-
         protected override void LoadComplete()
         {
             base.LoadComplete();

osu.Game/Screens/Select/FilterControl.cs

@@ -28,7 +28,6 @@ using osu.Game.Rulesets;
 using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Select.Filter;
 using osuTK;
-using osuTK.Graphics;
 using osuTK.Input;
 
 namespace osu.Game.Screens.Select
@@ -97,8 +96,8 @@ namespace osu.Game.Screens.Select
             {
                 new Box
                 {
-                    Colour = Color4.Black,
-                    Alpha = 0.8f,
+                    Colour = OsuColour.Gray(0.05f),
+                    Alpha = 0.96f,
                     Width = 2,
                     RelativeSizeAxes = Axes.Both,
                 },

osu.Game/Screens/Select/Footer.cs

@@ -6,12 +6,11 @@
 using System.Collections.Generic;
 using System.Linq;
 using osuTK;
-using osuTK.Graphics;
-using osu.Framework.Extensions.Color4Extensions;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Shapes;
 using osu.Framework.Input.Events;
+using osu.Game.Graphics;
 using osu.Game.Graphics.UserInterface;
 
 namespace osu.Game.Screens.Select
@@ -82,14 +81,15 @@ namespace osu.Game.Screens.Select
                 {
                     RelativeSizeAxes = Axes.Both,
                     Size = Vector2.One,
-                    Colour = Color4.Black.Opacity(0.5f),
+                    Colour = OsuColour.Gray(0.1f),
+                    Alpha = 0.96f,
                 },
                 modeLight = new Box
                 {
                     RelativeSizeAxes = Axes.X,
                     Height = 3,
                     Position = new Vector2(0, -3),
-                    Colour = Color4.Black,
+                    Colour = OsuColour.Gray(0.1f),
                 },
                 new FillFlowContainer
                 {

osu.Game/Screens/Select/SongSelect.cs

@@ -711,12 +711,6 @@ namespace osu.Game.Screens.Select
 
             Carousel.AllowSelection = true;
 
-            if (pendingFilterApplication)
-            {
-                Carousel.Filter(FilterControl.CreateCriteria());
-                pendingFilterApplication = false;
-            }
-
             BeatmapDetails.Refresh();
 
             beginLooping();
@@ -749,6 +743,17 @@ namespace osu.Game.Screens.Select
             FilterControl.Activate();
         }
 
+        protected override void Update()
+        {
+            base.Update();
+
+            if (Carousel.AllowSelection && pendingFilterApplication)
+            {
+                Carousel.Filter(FilterControl.CreateCriteria());
+                pendingFilterApplication = false;
+            }
+        }
+
         public override void OnSuspending(ScreenTransitionEvent e)
         {
             // Handle the case where FinaliseSelection is never called (ie. when a screen is pushed externally).

osu.Game/Screens/SelectV2/Leaderboards/LeaderboardScoreV2.cs

@@ -16,6 +16,7 @@ using osu.Framework.Graphics.Shapes;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input.Events;
 using osu.Framework.Localisation;
+using osu.Framework.Platform;
 using osu.Game.Configuration;
 using osu.Game.Extensions;
 using osu.Game.Graphics;
@@ -23,6 +24,7 @@ using osu.Game.Graphics.Backgrounds;
 using osu.Game.Graphics.Containers;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Graphics.UserInterface;
+using osu.Game.Online.API;
 using osu.Game.Online.API.Requests.Responses;
 using osu.Game.Online.Leaderboards;
 using osu.Game.Overlays;
@@ -82,6 +84,12 @@ namespace osu.Game.Screens.SelectV2.Leaderboards
         [Resolved]
         private ScoreManager scoreManager { get; set; } = null!;
 
+        [Resolved]
+        private Clipboard? clipboard { get; set; }
+
+        [Resolved]
+        private IAPIProvider api { get; set; } = null!;
+
         private Container content = null!;
         private Box background = null!;
         private Box foreground = null!;
@@ -769,6 +777,9 @@ namespace osu.Game.Screens.SelectV2.Leaderboards
                 if (score.Mods.Length > 0)
                     items.Add(new OsuMenuItem("Use these mods", MenuItemType.Highlighted, () => SelectedMods.Value = score.Mods.Where(m => IsValidMod.Invoke(m)).ToArray()));
 
+                if (score.OnlineID > 0)
+                    items.Add(new OsuMenuItem(CommonStrings.CopyLink, MenuItemType.Standard, () => clipboard?.SetText($@"{api.WebsiteRootUrl}/scores/{score.OnlineID}")));
+
                 if (score.Files.Count <= 0) return items.ToArray();
 
                 items.Add(new OsuMenuItem(CommonStrings.Export, MenuItemType.Standard, () => scoreManager.Export(score)));

osu.Game/Skinning/Components/BeatmapAttributeText.cs

@@ -3,6 +3,8 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
 using JetBrains.Annotations;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -18,6 +20,9 @@ using osu.Game.Graphics.Sprites;
 using osu.Game.Localisation;
 using osu.Game.Localisation.SkinComponents;
 using osu.Game.Resources.Localisation.Web;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Mods;
+using osu.Game.Utils;
 
 namespace osu.Game.Skinning.Components
 {
@@ -33,7 +38,20 @@ namespace osu.Game.Skinning.Components
         [Resolved]
         private IBindable<WorkingBeatmap> beatmap { get; set; } = null!;
 
+        [Resolved]
+        private IBindable<IReadOnlyList<Mod>> mods { get; set; } = null!;
+
+        [Resolved]
+        private IBindable<RulesetInfo> ruleset { get; set; } = null!;
+
+        [Resolved]
+        private BeatmapDifficultyCache difficultyCache { get; set; } = null!;
+
         private readonly OsuSpriteText text;
+        private IBindable<StarDifficulty?>? difficultyBindable;
+        private CancellationTokenSource? difficultyCancellationSource;
+        private ModSettingChangeTracker? modSettingTracker;
+        private StarDifficulty? starDifficulty;
 
         public BeatmapAttributeText()
         {
@@ -55,7 +73,35 @@ namespace osu.Game.Skinning.Components
 
             Attribute.BindValueChanged(_ => updateText());
             Template.BindValueChanged(_ => updateText());
-            beatmap.BindValueChanged(_ => updateText());
+
+            beatmap.BindValueChanged(b =>
+            {
+                difficultyCancellationSource?.Cancel();
+                difficultyCancellationSource = new CancellationTokenSource();
+
+                difficultyBindable?.UnbindAll();
+                difficultyBindable = difficultyCache.GetBindableDifficulty(b.NewValue.BeatmapInfo, difficultyCancellationSource.Token);
+                difficultyBindable.BindValueChanged(d =>
+                {
+                    starDifficulty = d.NewValue;
+                    updateText();
+                });
+
+                updateText();
+            }, true);
+
+            mods.BindValueChanged(m =>
+            {
+                modSettingTracker?.Dispose();
+                modSettingTracker = new ModSettingChangeTracker(m.NewValue)
+                {
+                    SettingChanged = _ => updateText()
+                };
+
+                updateText();
+            }, true);
+
+            ruleset.BindValueChanged(_ => updateText());
 
             updateText();
         }
@@ -156,37 +202,64 @@ namespace osu.Game.Skinning.Components
                     return beatmap.Value.BeatmapInfo.Metadata.Source;
 
                 case BeatmapAttribute.Length:
-                    return TimeSpan.FromMilliseconds(beatmap.Value.BeatmapInfo.Length).ToFormattedDuration();
+                    return Math.Round(beatmap.Value.BeatmapInfo.Length / ModUtils.CalculateRateWithMods(mods.Value)).ToFormattedDuration();
 
                 case BeatmapAttribute.RankedStatus:
                     return beatmap.Value.BeatmapInfo.Status.GetLocalisableDescription();
 
                 case BeatmapAttribute.BPM:
-                    return beatmap.Value.BeatmapInfo.BPM.ToLocalisableString(@"F2");
+                    return FormatUtils.RoundBPM(beatmap.Value.BeatmapInfo.BPM, ModUtils.CalculateRateWithMods(mods.Value)).ToLocalisableString(@"F2");
 
                 case BeatmapAttribute.CircleSize:
-                    return ((double)beatmap.Value.BeatmapInfo.Difficulty.CircleSize).ToLocalisableString(@"F2");
+                    return computeDifficulty().CircleSize.ToLocalisableString(@"F2");
 
                 case BeatmapAttribute.HPDrain:
-                    return ((double)beatmap.Value.BeatmapInfo.Difficulty.DrainRate).ToLocalisableString(@"F2");
+                    return computeDifficulty().DrainRate.ToLocalisableString(@"F2");
 
                 case BeatmapAttribute.Accuracy:
-                    return ((double)beatmap.Value.BeatmapInfo.Difficulty.OverallDifficulty).ToLocalisableString(@"F2");
+                    return computeDifficulty().OverallDifficulty.ToLocalisableString(@"F2");
 
                 case BeatmapAttribute.ApproachRate:
-                    return ((double)beatmap.Value.BeatmapInfo.Difficulty.ApproachRate).ToLocalisableString(@"F2");
+                    return computeDifficulty().ApproachRate.ToLocalisableString(@"F2");
 
                 case BeatmapAttribute.StarRating:
-                    return beatmap.Value.BeatmapInfo.StarRating.ToLocalisableString(@"F2");
+                    return (starDifficulty?.Stars ?? 0).ToLocalisableString(@"F2");
 
                 default:
                     return string.Empty;
             }
+
+            BeatmapDifficulty computeDifficulty()
+            {
+                BeatmapDifficulty difficulty = new BeatmapDifficulty(beatmap.Value.BeatmapInfo.Difficulty);
+
+                foreach (var mod in mods.Value.OfType<IApplicableToDifficulty>())
+                    mod.ApplyToDifficulty(difficulty);
+
+                if (ruleset.Value is RulesetInfo rulesetInfo)
+                {
+                    double rate = ModUtils.CalculateRateWithMods(mods.Value);
+                    difficulty = rulesetInfo.CreateInstance().GetRateAdjustedDisplayDifficulty(difficulty, rate);
+                }
+
+                return difficulty;
+            }
         }
 
         protected override void SetFont(FontUsage font) => text.Font = font.With(size: 40);
 
         protected override void SetTextColour(Colour4 textColour) => text.Colour = textColour;
+
+        protected override void Dispose(bool isDisposing)
+        {
+            base.Dispose(isDisposing);
+
+            difficultyCancellationSource?.Cancel();
+            difficultyCancellationSource?.Dispose();
+            difficultyCancellationSource = null;
+
+            modSettingTracker?.Dispose();
+        }
     }
 
     // WARNING: DO NOT ADD ANY VALUES TO THIS ENUM ANYWHERE ELSE THAN AT THE END.

osu.Game/Users/UserPanel.cs

@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 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.Graphics.Sprites;
@@ -13,6 +14,7 @@ using osu.Game.Overlays;
 using osu.Framework.Graphics.UserInterface;
 using osu.Game.Graphics.UserInterface;
 using osu.Framework.Graphics.Cursor;
+using osu.Framework.Localisation;
 using osu.Framework.Screens;
 using osu.Game.Graphics.Containers;
 using osu.Game.Online.API;
@@ -28,7 +30,7 @@ using osuTK;
 
 namespace osu.Game.Users
 {
-    public abstract partial class UserPanel : OsuClickableContainer, IHasContextMenu
+    public abstract partial class UserPanel : OsuClickableContainer, IHasContextMenu, IFilterable
     {
         public readonly APIUser User;
 
@@ -162,5 +164,20 @@ namespace osu.Game.Users
                 return items.ToArray();
             }
         }
+
+        public IEnumerable<LocalisableString> FilterTerms => [User.Username];
+
+        public bool MatchingFilter
+        {
+            set
+            {
+                if (value)
+                    Show();
+                else
+                    Hide();
+            }
+        }
+
+        public bool FilteringActive { get; set; }
     }
 }