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Do not regenerate breaks unless meaningful change to object start/end times is detected

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Tangentially found when profiling https://github.com/ppy/osu/pull/28792.

For reproduction, import https://osu.ppy.sh/beatmapsets/972#osu/9007,
move any object on the playfield, and observe a half-second freeze
when ending the drag.
This commit is contained in:
Bartłomiej Dach 2024-07-10 10:58:29 +02:00
parent 13c8370823
commit 343090e3b1
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1 changed files with 13 additions and 0 deletions
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13
osu.Game/Screens/Edit/EditorBeatmapProcessor.cs
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@ -2,6 +2,7 @@
// See the LICENCE file in the repository root for full licence text.
using System;
using System.Collections.Generic;
using System.Linq;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Timing;
@ -18,6 +19,11 @@ namespace osu.Game.Screens.Edit
private readonly IBeatmapProcessor? rulesetBeatmapProcessor;
/// <summary>
/// Kept for the purposes of reducing redundant regeneration of automatic breaks.
/// </summary>
private HashSet<(double, double)> objectDurationCache = new HashSet<(double, double)>();
public EditorBeatmapProcessor(EditorBeatmap beatmap, Ruleset ruleset)
{
Beatmap = beatmap;
@ -38,6 +44,13 @@ namespace osu.Game.Screens.Edit
private void autoGenerateBreaks()
{
var objectDuration = Beatmap.HitObjects.Select(ho => (ho.StartTime, ho.GetEndTime())).ToHashSet();
if (objectDuration.SetEquals(objectDurationCache))
return;
objectDurationCache = objectDuration;
Beatmap.Breaks.RemoveAll(b => b is not ManualBreakPeriod);
foreach (var manualBreak in Beatmap.Breaks.ToList())