Merge pull request #17302 from peppy/fix-spectator-seeks

Fix spectator not starting from current player position

osu.Game.Tests/Gameplay/TestSceneMasterGameplayClockContainer.cs

@@ -26,6 +26,12 @@ namespace osu.Game.Tests.Gameplay
             Dependencies.Cache(localConfig = new OsuConfigManager(LocalStorage));
         }
 
+        [SetUpSteps]
+        public void SetUpSteps()
+        {
+            AddStep("reset audio offset", () => localConfig.SetValue(OsuSetting.AudioOffset, 0.0));
+        }
+
         [Test]
         public void TestStartThenElapsedTime()
         {
@@ -36,7 +42,7 @@ namespace osu.Game.Tests.Gameplay
                 var working = CreateWorkingBeatmap(new OsuRuleset().RulesetInfo);
                 working.LoadTrack();
 
-                Add(gameplayClockContainer = new MasterGameplayClockContainer(working, 0));
+                Child = gameplayClockContainer = new MasterGameplayClockContainer(working, 0);
             });
 
             AddStep("start clock", () => gameplayClockContainer.Start());
@@ -53,7 +59,7 @@ namespace osu.Game.Tests.Gameplay
                 var working = CreateWorkingBeatmap(new OsuRuleset().RulesetInfo);
                 working.LoadTrack();
 
-                Add(gameplayClockContainer = new MasterGameplayClockContainer(working, 0));
+                Child = gameplayClockContainer = new MasterGameplayClockContainer(working, 0);
             });
 
             AddStep("start clock", () => gameplayClockContainer.Start());
@@ -73,26 +79,29 @@ namespace osu.Game.Tests.Gameplay
         public void TestSeekPerformsInGameplayTime(
             [Values(1.0, 0.5, 2.0)] double clockRate,
             [Values(0.0, 200.0, -200.0)] double userOffset,
-            [Values(false, true)] bool whileStopped)
+            [Values(false, true)] bool whileStopped,
+            [Values(false, true)] bool setAudioOffsetBeforeConstruction)
         {
             ClockBackedTestWorkingBeatmap working = null;
             GameplayClockContainer gameplayClockContainer = null;
 
+            if (setAudioOffsetBeforeConstruction)
+                AddStep($"preset audio offset to {userOffset}", () => localConfig.SetValue(OsuSetting.AudioOffset, userOffset));
+
             AddStep("create container", () =>
             {
                 working = new ClockBackedTestWorkingBeatmap(new OsuRuleset().RulesetInfo, new FramedClock(new ManualClock()), Audio);
                 working.LoadTrack();
 
-                Add(gameplayClockContainer = new MasterGameplayClockContainer(working, 0));
+                Child = gameplayClockContainer = new MasterGameplayClockContainer(working, 0);
 
-                if (whileStopped)
+                gameplayClockContainer.Reset(startClock: !whileStopped);
-                    gameplayClockContainer.Stop();
-
-                gameplayClockContainer.Reset();
             });
 
             AddStep($"set clock rate to {clockRate}", () => working.Track.AddAdjustment(AdjustableProperty.Frequency, new BindableDouble(clockRate)));
-            AddStep($"set audio offset to {userOffset}", () => localConfig.SetValue(OsuSetting.AudioOffset, userOffset));
+
+            if (!setAudioOffsetBeforeConstruction)
+                AddStep($"set audio offset to {userOffset}", () => localConfig.SetValue(OsuSetting.AudioOffset, userOffset));
 
             AddStep("seek to 2500", () => gameplayClockContainer.Seek(2500));
             AddAssert("gameplay clock time = 2500", () => Precision.AlmostEquals(gameplayClockContainer.CurrentTime, 2500, 10f));

osu.Game.Tests/Gameplay/TestSceneStoryboardSamples.cs

@@ -88,7 +88,7 @@ namespace osu.Game.Tests.Gameplay
         [Test]
         public void TestSampleHasLifetimeEndWithInitialClockTime()
         {
-            GameplayClockContainer gameplayContainer = null;
+            MasterGameplayClockContainer gameplayContainer = null;
             DrawableStoryboardSample sample = null;
 
             AddStep("create container", () =>
@@ -96,8 +96,11 @@ namespace osu.Game.Tests.Gameplay
                 var working = CreateWorkingBeatmap(new OsuRuleset().RulesetInfo);
                 working.LoadTrack();
 
-                Add(gameplayContainer = new MasterGameplayClockContainer(working, 1000, true)
+                const double start_time = 1000;
+
+                Add(gameplayContainer = new MasterGameplayClockContainer(working, start_time)
                 {
+                    StartTime = start_time,
                     IsPaused = { Value = true },
                     Child = new FrameStabilityContainer
                     {

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

@@ -56,10 +56,11 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             private double lastFrequency = double.MaxValue;
 
-            protected override void Update()
+            protected override void UpdateAfterChildren()
             {
-                base.Update();
+                base.UpdateAfterChildren();
 
+                // This must be done in UpdateAfterChildren to allow the gameplay clock to have updated before checking values.
                 double freq = Beatmap.Value.Track.AggregateFrequency.Value;
 
                 FrequencyIncreased |= freq > lastFrequency;

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

@@ -1,12 +1,10 @@
 // Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System.Diagnostics;
 using System.Linq;
 using NUnit.Framework;
 using osu.Framework.Graphics;
 using osu.Framework.Timing;
-using osu.Framework.Utils;
 using osu.Game.Beatmaps;
 using osu.Game.Graphics.Sprites;
 using osu.Game.Rulesets.Osu;
@@ -36,10 +34,10 @@ namespace osu.Game.Tests.Visual.Gameplay
                 BeatmapInfo = { AudioLeadIn = leadIn }
             });
 
-            AddAssert($"first frame is {expectedStartTime}", () =>
+            AddStep("check first frame time", () =>
             {
-                Debug.Assert(player.FirstFrameClockTime != null);
+                Assert.That(player.FirstFrameClockTime, Is.Not.Null);
-                return Precision.AlmostEquals(player.FirstFrameClockTime.Value, expectedStartTime, lenience_ms);
+                Assert.That(player.FirstFrameClockTime.Value, Is.EqualTo(expectedStartTime).Within(lenience_ms));
             });
         }
 
@@ -59,10 +57,10 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             loadPlayerWithBeatmap(new TestBeatmap(new OsuRuleset().RulesetInfo), storyboard);
 
-            AddAssert($"first frame is {expectedStartTime}", () =>
+            AddStep("check first frame time", () =>
             {
-                Debug.Assert(player.FirstFrameClockTime != null);
+                Assert.That(player.FirstFrameClockTime, Is.Not.Null);
-                return Precision.AlmostEquals(player.FirstFrameClockTime.Value, expectedStartTime, lenience_ms);
+                Assert.That(player.FirstFrameClockTime.Value, Is.EqualTo(expectedStartTime).Within(lenience_ms));
             });
         }
 
@@ -97,10 +95,10 @@ namespace osu.Game.Tests.Visual.Gameplay
 
             loadPlayerWithBeatmap(new TestBeatmap(new OsuRuleset().RulesetInfo), storyboard);
 
-            AddAssert($"first frame is {expectedStartTime}", () =>
+            AddStep("check first frame time", () =>
             {
-                Debug.Assert(player.FirstFrameClockTime != null);
+                Assert.That(player.FirstFrameClockTime, Is.Not.Null);
-                return Precision.AlmostEquals(player.FirstFrameClockTime.Value, expectedStartTime, lenience_ms);
+                Assert.That(player.FirstFrameClockTime.Value, Is.EqualTo(expectedStartTime).Within(lenience_ms));
             });
         }
 

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

@@ -464,16 +464,16 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
         private class TestMultiSpectatorScreen : MultiSpectatorScreen
         {
-            private readonly double? gameplayStartTime;
+            private readonly double? startTime;
 
-            public TestMultiSpectatorScreen(Room room, MultiplayerRoomUser[] users, double? gameplayStartTime = null)
+            public TestMultiSpectatorScreen(Room room, MultiplayerRoomUser[] users, double? startTime = null)
                 : base(room, users)
             {
-                this.gameplayStartTime = gameplayStartTime;
+                this.startTime = startTime;
             }
 
             protected override MasterGameplayClockContainer CreateMasterGameplayClockContainer(WorkingBeatmap beatmap)
-                => new MasterGameplayClockContainer(beatmap, gameplayStartTime ?? 0, gameplayStartTime.HasValue);
+                => new MasterGameplayClockContainer(beatmap, 0) { StartTime = startTime ?? 0 };
         }
     }
 }

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

@@ -495,17 +495,20 @@ namespace osu.Game.Tests.Visual.Multiplayer
 
             AddUntilStep("wait for song select", () => this.ChildrenOfType<MultiplayerMatchSongSelect>().FirstOrDefault()?.BeatmapSetsLoaded == true);
 
-            AddAssert("Mods match current item", () => SelectedMods.Value.Select(m => m.Acronym).SequenceEqual(multiplayerClient.Room.AsNonNull().Playlist.First().RequiredMods.Select(m => m.Acronym)));
+            AddAssert("Mods match current item",
+                () => SelectedMods.Value.Select(m => m.Acronym).SequenceEqual(multiplayerClient.Room.AsNonNull().Playlist.First().RequiredMods.Select(m => m.Acronym)));
 
             AddStep("Switch required mods", () => ((MultiplayerMatchSongSelect)multiplayerComponents.MultiplayerScreen.CurrentSubScreen).Mods.Value = new Mod[] { new OsuModDoubleTime() });
 
-            AddAssert("Mods don't match current item", () => !SelectedMods.Value.Select(m => m.Acronym).SequenceEqual(multiplayerClient.Room.AsNonNull().Playlist.First().RequiredMods.Select(m => m.Acronym)));
+            AddAssert("Mods don't match current item",
+                () => !SelectedMods.Value.Select(m => m.Acronym).SequenceEqual(multiplayerClient.Room.AsNonNull().Playlist.First().RequiredMods.Select(m => m.Acronym)));
 
             AddStep("start match externally", () => multiplayerClient.StartMatch().WaitSafely());
 
             AddUntilStep("play started", () => multiplayerComponents.CurrentScreen is Player);
 
-            AddAssert("Mods match current item", () => SelectedMods.Value.Select(m => m.Acronym).SequenceEqual(multiplayerClient.Room.AsNonNull().Playlist.First().RequiredMods.Select(m => m.Acronym)));
+            AddAssert("Mods match current item",
+                () => SelectedMods.Value.Select(m => m.Acronym).SequenceEqual(multiplayerClient.Room.AsNonNull().Playlist.First().RequiredMods.Select(m => m.Acronym)));
         }
 
         [Test]
@@ -665,6 +668,41 @@ namespace osu.Game.Tests.Visual.Multiplayer
             AddUntilStep("wait for results", () => multiplayerComponents.CurrentScreen is ResultsScreen);
         }
 
+        [Test]
+        public void TestGameplayDoesntStartWithNonLoadedUser()
+        {
+            createRoom(() => new Room
+            {
+                Name = { Value = "Test Room" },
+                Playlist =
+                {
+                    new PlaylistItem(beatmaps.GetWorkingBeatmap(importedSet.Beatmaps.First(b => b.Ruleset.OnlineID == 0)).BeatmapInfo)
+                    {
+                        RulesetID = new OsuRuleset().RulesetInfo.OnlineID,
+                    }
+                }
+            });
+
+            pressReadyButton();
+
+            AddStep("join other user and ready", () =>
+            {
+                multiplayerClient.AddUser(new APIUser { Id = 1234 });
+                multiplayerClient.ChangeUserState(1234, MultiplayerUserState.Ready);
+            });
+
+            AddStep("start match", () =>
+            {
+                multiplayerClient.StartMatch();
+            });
+
+            AddUntilStep("wait for player", () => multiplayerComponents.CurrentScreen is Player);
+
+            AddWaitStep("wait some", 20);
+
+            AddAssert("ensure gameplay hasn't started", () => this.ChildrenOfType<GameplayClockContainer>().SingleOrDefault()?.IsRunning == false);
+        }
+
         [Test]
         public void TestRoomSettingsReQueriedWhenJoiningRoom()
         {

osu.Game/Rulesets/UI/DrawableRuleset.cs

@@ -133,6 +133,11 @@ namespace osu.Game.Rulesets.UI
                 p.NewResult += (_, r) => NewResult?.Invoke(r);
                 p.RevertResult += (_, r) => RevertResult?.Invoke(r);
             }));
+        }
+
+        protected override void LoadComplete()
+        {
+            base.LoadComplete();
 
             IsPaused.ValueChanged += paused =>
             {

osu.Game/Screens/Edit/GameplayTest/EditorPlayer.cs

@@ -25,7 +25,7 @@ namespace osu.Game.Screens.Edit.GameplayTest
         }
 
         protected override GameplayClockContainer CreateGameplayClockContainer(WorkingBeatmap beatmap, double gameplayStart)
-            => new MasterGameplayClockContainer(beatmap, editorState.Time, true);
+            => new MasterGameplayClockContainer(beatmap, gameplayStart) { StartTime = editorState.Time };
 
         protected override void LoadComplete()
         {

osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/ISpectatorPlayerClock.cs

@@ -17,8 +17,11 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
         Bindable<bool> WaitingOnFrames { get; }
 
         /// <summary>
-        /// Whether this clock is resynchronising to the master clock.
+        /// Whether this clock is behind the master clock and running at a higher rate to catch up to it.
         /// </summary>
+        /// <remarks>
+        /// Of note, this will be false if this clock is *ahead* of the master clock.
+        /// </remarks>
         bool IsCatchingUp { get; set; }
 
         /// <summary>

osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorPlayer.cs

@@ -55,12 +55,11 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
             public SpectatorGameplayClockContainer([NotNull] IClock sourceClock)
                 : base(sourceClock)
             {
-                // the container should initially be in a stopped state until the catch-up clock is started by the sync manager.
-                Stop();
             }
 
             protected override void Update()
             {
+                // The SourceClock here is always a CatchUpSpectatorPlayerClock.
                 // The player clock's running state is controlled externally, but the local pausing state needs to be updated to stop gameplay.
                 if (SourceClock.IsRunning)
                     Start();

osu.Game/Screens/OnlinePlay/Multiplayer/Spectate/MultiSpectatorScreen.cs

@@ -164,7 +164,6 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
             base.LoadComplete();
 
             masterClockContainer.Reset();
-            masterClockContainer.Stop();
 
             syncManager.ReadyToStart += onReadyToStart;
             syncManager.MasterState.BindValueChanged(onMasterStateChanged, true);
@@ -198,8 +197,8 @@ namespace osu.Game.Screens.OnlinePlay.Multiplayer.Spectate
                                         .DefaultIfEmpty(0)
                                         .Min();
 
-            masterClockContainer.Seek(startTime);
+            masterClockContainer.StartTime = startTime;
-            masterClockContainer.Start();
+            masterClockContainer.Reset(true);
 
             // Although the clock has been started, this flag is set to allow for later synchronisation state changes to also be able to start it.
             canStartMasterClock = true;

osu.Game/Screens/Play/GameplayClockContainer.cs

@@ -24,7 +24,7 @@ namespace osu.Game.Screens.Play
         /// <summary>
         /// Whether gameplay is paused.
         /// </summary>
-        public readonly BindableBool IsPaused = new BindableBool();
+        public readonly BindableBool IsPaused = new BindableBool(true);
 
         /// <summary>
         /// The adjustable source clock used for gameplay. Should be used for seeks and clock control.
@@ -41,6 +41,15 @@ namespace osu.Game.Screens.Play
         /// </summary>
         public event Action OnSeek;
 
+        /// <summary>
+        /// The time from which the clock should start. Will be seeked to on calling <see cref="Reset"/>.
+        /// </summary>
+        /// <remarks>
+        /// If not set, a value of zero will be used.
+        /// Importantly, the value will be inferred from the current ruleset in <see cref="MasterGameplayClockContainer"/> unless specified.
+        /// </remarks>
+        public double? StartTime { get; set; }
+
         /// <summary>
         /// Creates a new <see cref="GameplayClockContainer"/>.
         /// </summary>
@@ -106,16 +115,17 @@ namespace osu.Game.Screens.Play
         /// <summary>
         /// Resets this <see cref="GameplayClockContainer"/> and the source to an initial state ready for gameplay.
         /// </summary>
-        public virtual void Reset()
+        /// <param name="startClock">Whether to start the clock immediately, if not already started.</param>
+        public void Reset(bool startClock = false)
         {
-            ensureSourceClockSet();
-            Seek(0);
-
             // Manually stop the source in order to not affect the IsPaused state.
             AdjustableSource.Stop();
 
-            if (!IsPaused.Value)
+            if (!IsPaused.Value || startClock)
                 Start();
+
+            ensureSourceClockSet();
+            Seek(StartTime ?? 0);
         }
 
         /// <summary>

osu.Game/Screens/Play/MasterGameplayClockContainer.cs

@@ -46,36 +46,36 @@ namespace osu.Game.Screens.Play
 
         private double totalAppliedOffset => userBeatmapOffsetClock.RateAdjustedOffset + userGlobalOffsetClock.RateAdjustedOffset + platformOffsetClock.RateAdjustedOffset;
 
-        private readonly BindableDouble pauseFreqAdjust = new BindableDouble(1);
+        private readonly BindableDouble pauseFreqAdjust = new BindableDouble(); // Important that this starts at zero, matching the paused state of the clock.
 
         private readonly WorkingBeatmap beatmap;
-        private readonly double gameplayStartTime;
-        private readonly bool startAtGameplayStart;
-        private readonly double firstHitObjectTime;
 
         private HardwareCorrectionOffsetClock userGlobalOffsetClock;
         private HardwareCorrectionOffsetClock userBeatmapOffsetClock;
         private HardwareCorrectionOffsetClock platformOffsetClock;
         private MasterGameplayClock masterGameplayClock;
         private Bindable<double> userAudioOffset;
-        private double startOffset;
 
         private IDisposable beatmapOffsetSubscription;
 
+        private readonly double skipTargetTime;
+
         [Resolved]
         private RealmAccess realm { get; set; }
 
         [Resolved]
         private OsuConfigManager config { get; set; }
 
-        public MasterGameplayClockContainer(WorkingBeatmap beatmap, double gameplayStartTime, bool startAtGameplayStart = false)
+        /// <summary>
+        /// Create a new master gameplay clock container.
+        /// </summary>
+        /// <param name="beatmap">The beatmap to be used for time and metadata references.</param>
+        /// <param name="skipTargetTime">The latest time which should be used when introducing gameplay. Will be used when skipping forward.</param>
+        public MasterGameplayClockContainer(WorkingBeatmap beatmap, double skipTargetTime)
             : base(beatmap.Track)
         {
             this.beatmap = beatmap;
-            this.gameplayStartTime = gameplayStartTime;
+            this.skipTargetTime = skipTargetTime;
-            this.startAtGameplayStart = startAtGameplayStart;
-
-            firstHitObjectTime = beatmap.Beatmap.HitObjects.First().StartTime;
         }
 
         protected override void LoadComplete()
@@ -90,41 +90,67 @@ namespace osu.Game.Screens.Play
                 settings => settings.Offset,
                 val => userBeatmapOffsetClock.Offset = val);
 
-            // sane default provided by ruleset.
+            // Reset may have been called externally before LoadComplete.
-            startOffset = gameplayStartTime;
+            // If it was, and the clock is in a playing state, we want to ensure that it isn't stopped here.
+            bool isStarted = !IsPaused.Value;
 
-            if (!startAtGameplayStart)
+            // If a custom start time was not specified, calculate the best value to use.
-            {
+            StartTime ??= findEarliestStartTime();
-                startOffset = Math.Min(0, startOffset);
 
-                // if a storyboard is present, it may dictate the appropriate start time by having events in negative time space.
+            Reset(startClock: isStarted);
-                // this is commonly used to display an intro before the audio track start.
+        }
-                double? firstStoryboardEvent = beatmap.Storyboard.EarliestEventTime;
-                if (firstStoryboardEvent != null)
-                    startOffset = Math.Min(startOffset, firstStoryboardEvent.Value);
 
-                // some beatmaps specify a current lead-in time which should be used instead of the ruleset-provided value when available.
+        private double findEarliestStartTime()
-                // this is not available as an option in the live editor but can still be applied via .osu editing.
+        {
-                if (beatmap.BeatmapInfo.AudioLeadIn > 0)
+            // here we are trying to find the time to start playback from the "zero" point.
-                    startOffset = Math.Min(startOffset, firstHitObjectTime - beatmap.BeatmapInfo.AudioLeadIn);
+            // generally this is either zero, or some point earlier than zero in the case of storyboards, lead-ins etc.
-            }
 
-            Seek(startOffset);
+            // start with the originally provided latest time (if before zero).
+            double time = Math.Min(0, skipTargetTime);
+
+            // if a storyboard is present, it may dictate the appropriate start time by having events in negative time space.
+            // this is commonly used to display an intro before the audio track start.
+            double? firstStoryboardEvent = beatmap.Storyboard.EarliestEventTime;
+            if (firstStoryboardEvent != null)
+                time = Math.Min(time, firstStoryboardEvent.Value);
+
+            // some beatmaps specify a current lead-in time which should be used instead of the ruleset-provided value when available.
+            // this is not available as an option in the live editor but can still be applied via .osu editing.
+            double firstHitObjectTime = beatmap.Beatmap.HitObjects.First().StartTime;
+            if (beatmap.BeatmapInfo.AudioLeadIn > 0)
+                time = Math.Min(time, firstHitObjectTime - beatmap.BeatmapInfo.AudioLeadIn);
+
+            return time;
         }
 
         protected override void OnIsPausedChanged(ValueChangedEvent<bool> isPaused)
         {
-            // The source is stopped by a frequency fade first.
+            if (IsLoaded)
-            if (isPaused.NewValue)
             {
-                this.TransformBindableTo(pauseFreqAdjust, 0, 200, Easing.Out).OnComplete(_ =>
+                // During normal operation, the source is stopped after performing a frequency ramp.
+                if (isPaused.NewValue)
                 {
-                    if (IsPaused.Value == isPaused.NewValue)
+                    this.TransformBindableTo(pauseFreqAdjust, 0, 200, Easing.Out).OnComplete(_ =>
-                        AdjustableSource.Stop();
+                    {
-                });
+                        if (IsPaused.Value == isPaused.NewValue)
+                            AdjustableSource.Stop();
+                    });
+                }
+                else
+                    this.TransformBindableTo(pauseFreqAdjust, 1, 200, Easing.In);
             }
             else
-                this.TransformBindableTo(pauseFreqAdjust, 1, 200, Easing.In);
+            {
+                if (isPaused.NewValue)
+                    AdjustableSource.Stop();
+
+                // If not yet loaded, we still want to ensure relevant state is correct, as it is used for offset calculations.
+                pauseFreqAdjust.Value = isPaused.NewValue ? 0 : 1;
+
+                // We must also process underlying gameplay clocks to update rate-adjusted offsets with the new frequency adjustment.
+                // Without doing this, an initial seek may be performed with the wrong offset.
+                GameplayClock.UnderlyingClock.ProcessFrame();
+            }
         }
 
         public override void Start()
@@ -152,10 +178,10 @@ namespace osu.Game.Screens.Play
         /// </summary>
         public void Skip()
         {
-            if (GameplayClock.CurrentTime > gameplayStartTime - MINIMUM_SKIP_TIME)
+            if (GameplayClock.CurrentTime > skipTargetTime - MINIMUM_SKIP_TIME)
                 return;
 
-            double skipTarget = gameplayStartTime - MINIMUM_SKIP_TIME;
+            double skipTarget = skipTargetTime - MINIMUM_SKIP_TIME;
 
             if (GameplayClock.CurrentTime < 0 && skipTarget > 6000)
                 // double skip exception for storyboards with very long intros
@@ -164,12 +190,6 @@ namespace osu.Game.Screens.Play
             Seek(skipTarget);
         }
 
-        public override void Reset()
-        {
-            base.Reset();
-            Seek(startOffset);
-        }
-
         protected override GameplayClock CreateGameplayClock(IFrameBasedClock source)
         {
             // Lazer's audio timings in general doesn't match stable. This is the result of user testing, albeit limited.
@@ -278,7 +298,6 @@ namespace osu.Game.Screens.Play
         private class MasterGameplayClock : GameplayClock
         {
             public readonly List<Bindable<double>> MutableNonGameplayAdjustments = new List<Bindable<double>>();
-
             public override IEnumerable<Bindable<double>> NonGameplayAdjustments => MutableNonGameplayAdjustments;
 
             public MasterGameplayClock(FramedOffsetClock underlyingClock)

osu.Game/Screens/Play/Player.cs

@@ -607,30 +607,25 @@ namespace osu.Game.Screens.Play
         private ScheduledDelegate frameStablePlaybackResetDelegate;
 
         /// <summary>
-        /// Seeks to a specific time in gameplay, bypassing frame stability.
+        /// Specify and seek to a custom start time from which gameplay should be observed.
         /// </summary>
         /// <remarks>
-        /// Intermediate hitobject judgements may not be applied or reverted correctly during this seek.
+        /// This performs a non-frame-stable seek. Intermediate hitobject judgements may not be applied or reverted correctly during this seek.
         /// </remarks>
         /// <param name="time">The destination time to seek to.</param>
-        internal void NonFrameStableSeek(double time)
+        protected void SetGameplayStartTime(double time)
         {
-            // TODO: This schedule should not be required and is a temporary hotfix.
+            if (frameStablePlaybackResetDelegate?.Cancelled == false && !frameStablePlaybackResetDelegate.Completed)
-            // See https://github.com/ppy/osu/issues/17267 for the issue.
+                frameStablePlaybackResetDelegate.RunTask();
-            // See https://github.com/ppy/osu/pull/17302 for a better fix which needs some more time.
-            ScheduleAfterChildren(() =>
-            {
-                if (frameStablePlaybackResetDelegate?.Cancelled == false && !frameStablePlaybackResetDelegate.Completed)
-                    frameStablePlaybackResetDelegate.RunTask();
 
-                bool wasFrameStable = DrawableRuleset.FrameStablePlayback;
+            bool wasFrameStable = DrawableRuleset.FrameStablePlayback;
-                DrawableRuleset.FrameStablePlayback = false;
+            DrawableRuleset.FrameStablePlayback = false;
 
-                Seek(time);
+            GameplayClockContainer.StartTime = time;
+            GameplayClockContainer.Reset();
 
-                // Delay resetting frame-stable playback for one frame to give the FrameStabilityContainer a chance to seek.
+            // Delay resetting frame-stable playback for one frame to give the FrameStabilityContainer a chance to seek.
-                frameStablePlaybackResetDelegate = ScheduleAfterChildren(() => DrawableRuleset.FrameStablePlayback = wasFrameStable);
+            frameStablePlaybackResetDelegate = ScheduleAfterChildren(() => DrawableRuleset.FrameStablePlayback = wasFrameStable);
-            });
         }
 
         /// <summary>
@@ -987,7 +982,7 @@ namespace osu.Game.Screens.Play
             if (GameplayClockContainer.GameplayClock.IsRunning)
                 throw new InvalidOperationException($"{nameof(StartGameplay)} should not be called when the gameplay clock is already running");
 
-            GameplayClockContainer.Reset();
+            GameplayClockContainer.Reset(true);
         }
 
         public override void OnSuspending(IScreen next)

osu.Game/Screens/Play/SpectatorPlayer.cs

@@ -78,7 +78,7 @@ namespace osu.Game.Screens.Play
             }
 
             if (isFirstBundle && score.Replay.Frames.Count > 0)
-                NonFrameStableSeek(score.Replay.Frames[0].Time);
+                SetGameplayStartTime(score.Replay.Frames[0].Time);
         }
 
         protected override Score CreateScore(IBeatmap beatmap) => score;