From ec9040798f233da015e928cd3d2b0273ec567be1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bart=C5=82omiej=20Dach?= Date: Tue, 9 Jul 2024 13:52:36 +0200 Subject: [PATCH 1/3] Run stacking when performing movement in osu! composer Closes https://github.com/ppy/osu/issues/28635. --- .../Edit/OsuSelectionHandler.cs | 23 ++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs b/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs index 41d47d31d017..9b4b77b62531 100644 --- a/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs +++ b/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs @@ -50,12 +50,33 @@ public override bool HandleMovement(MoveSelectionEvent moveEvent) { var hitObjects = selectedMovableObjects; + var localDelta = this.ScreenSpaceDeltaToParentSpace(moveEvent.ScreenSpaceDelta); + + // this conditional is a rather ugly special case for stacks. + // as it turns out, adding the `EditorBeatmap.Update()` call at the end of this would cause stacked objects to jitter when moved around + // (they would stack and then unstack every frame). + // the reason for that is that the selection handling abstractions are not aware of the distinction between "displayed" and "actual" position + // which is unique to osu! due to stacking being applied as a post-processing step. + // therefore, the following loop would occur: + // - on frame 1 the blueprint is snapped to the stack's baseline position. `EditorBeatmap.Update()` applies stacking successfully, + // the blueprint moves up the stack from its original drag position. + // - on frame 2 the blueprint's position is now the *stacked* position, which is interpreted higher up as *manually performing an unstack* + // to the blueprint's unstacked position (as the machinery higher up only cares about differences in screen space position). + if (hitObjects.Any(h => Precision.AlmostEquals(localDelta, -h.StackOffset))) + return true; + // this will potentially move the selection out of bounds... foreach (var h in hitObjects) - h.Position += this.ScreenSpaceDeltaToParentSpace(moveEvent.ScreenSpaceDelta); + h.Position += localDelta; // but this will be corrected. moveSelectionInBounds(); + + // update all of the objects in order to update stacking. + // in particular, this causes stacked objects to instantly unstack on drag. + foreach (var h in hitObjects) + EditorBeatmap.Update(h); + return true; } From 9cc0e0137b5c7d0c5486fd993936ea34cec7c1a7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bart=C5=82omiej=20Dach?= Date: Tue, 9 Jul 2024 13:58:58 +0200 Subject: [PATCH 2/3] Snap to stack in osu! composer when dragging to any of the items on it Previously it would be required to drag to the starting position of the stack which feels weird. --- osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs b/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs index 26bd96cc3a7c..3c1d0fbb1c52 100644 --- a/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs +++ b/osu.Game.Rulesets.Osu/Edit/OsuHitObjectComposer.cs @@ -295,6 +295,12 @@ private bool snapToVisibleBlueprints(Vector2 screenSpacePosition, out SnapResult if (Vector2.Distance(closestSnapPosition, screenSpacePosition) < snapRadius) { + // if the snap target is a stacked object, snap to its unstacked position rather than its stacked position. + // this is intended to make working with stacks easier (because thanks to this, you can drag an object to any + // of the items on the stack to add an object to it, rather than having to drag to the position of the *first* object on it at all times). + if (b.Item is OsuHitObject osuObject && osuObject.StackOffset != Vector2.Zero) + closestSnapPosition = b.ToScreenSpace(b.ToLocalSpace(closestSnapPosition) - osuObject.StackOffset); + // only return distance portion, since time is not really valid snapResult = new SnapResult(closestSnapPosition, null, playfield); return true; From 37a296ba4c3808f8fdaf322ceba1387d9a05ebde Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bart=C5=82omiej=20Dach?= Date: Thu, 11 Jul 2024 13:22:36 +0200 Subject: [PATCH 3/3] Limit per-frame movement hitobject processing to stacking updates --- .../Beatmaps/OsuBeatmapProcessor.cs | 17 +++++++++++------ .../Edit/OsuSelectionHandler.cs | 9 +++++---- 2 files changed, 16 insertions(+), 10 deletions(-) diff --git a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs index d3359135861d..0e775531771d 100644 --- a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs +++ b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapProcessor.cs @@ -42,7 +42,12 @@ public override void PostProcess() { base.PostProcess(); - var hitObjects = Beatmap.HitObjects as List ?? Beatmap.HitObjects.OfType().ToList(); + ApplyStacking(Beatmap); + } + + internal static void ApplyStacking(IBeatmap beatmap) + { + var hitObjects = beatmap.HitObjects as List ?? beatmap.HitObjects.OfType().ToList(); if (hitObjects.Count > 0) { @@ -50,14 +55,14 @@ public override void PostProcess() foreach (var h in hitObjects) h.StackHeight = 0; - if (Beatmap.BeatmapInfo.BeatmapVersion >= 6) - applyStacking(Beatmap.BeatmapInfo, hitObjects, 0, hitObjects.Count - 1); + if (beatmap.BeatmapInfo.BeatmapVersion >= 6) + applyStacking(beatmap.BeatmapInfo, hitObjects, 0, hitObjects.Count - 1); else - applyStackingOld(Beatmap.BeatmapInfo, hitObjects); + applyStackingOld(beatmap.BeatmapInfo, hitObjects); } } - private void applyStacking(BeatmapInfo beatmapInfo, List hitObjects, int startIndex, int endIndex) + private static void applyStacking(BeatmapInfo beatmapInfo, List hitObjects, int startIndex, int endIndex) { ArgumentOutOfRangeException.ThrowIfGreaterThan(startIndex, endIndex); ArgumentOutOfRangeException.ThrowIfNegative(startIndex); @@ -209,7 +214,7 @@ private void applyStacking(BeatmapInfo beatmapInfo, List hitObject } } - private void applyStackingOld(BeatmapInfo beatmapInfo, List hitObjects) + private static void applyStackingOld(BeatmapInfo beatmapInfo, List hitObjects) { for (int i = 0; i < hitObjects.Count; i++) { diff --git a/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs b/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs index 9b4b77b62531..2ca7664d5d59 100644 --- a/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs +++ b/osu.Game.Rulesets.Osu/Edit/OsuSelectionHandler.cs @@ -13,6 +13,7 @@ using osu.Game.Rulesets.Edit; using osu.Game.Rulesets.Objects; using osu.Game.Rulesets.Objects.Types; +using osu.Game.Rulesets.Osu.Beatmaps; using osu.Game.Rulesets.Osu.Objects; using osu.Game.Rulesets.Osu.UI; using osu.Game.Screens.Edit.Compose.Components; @@ -72,10 +73,10 @@ public override bool HandleMovement(MoveSelectionEvent moveEvent) // but this will be corrected. moveSelectionInBounds(); - // update all of the objects in order to update stacking. - // in particular, this causes stacked objects to instantly unstack on drag. - foreach (var h in hitObjects) - EditorBeatmap.Update(h); + // manually update stacking. + // this intentionally bypasses the editor `UpdateState()` / beatmap processor flow for performance reasons, + // as the entire flow is too expensive to run on every movement. + Scheduler.AddOnce(OsuBeatmapProcessor.ApplyStacking, EditorBeatmap); return true; }