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Code Issues Releases Wiki Activity

Add fallback sorts to CarouselBeatmapSet to ensure stable sorting

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This commit is contained in:
Dean Herbert 2023-01-17 16:36:47 +09:00
parent 92fc439f82
commit a9ac28b504
1 changed files with 42 additions and 13 deletions
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55
osu.Game/Screens/Select/Carousel/CarouselBeatmapSet.cs
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@ -61,50 +61,79 @@ namespace osu.Game.Screens.Select.Carousel
if (!(other is CarouselBeatmapSet otherSet))
return base.CompareTo(criteria, other);
int comparison = 0;
switch (criteria.Sort)
{
default:
case SortMode.Artist:
return string.Compare(BeatmapSet.Metadata.Artist, otherSet.BeatmapSet.Metadata.Artist, StringComparison.OrdinalIgnoreCase);
comparison = string.Compare(BeatmapSet.Metadata.Artist, otherSet.BeatmapSet.Metadata.Artist, StringComparison.OrdinalIgnoreCase);
break;
case SortMode.Title:
return string.Compare(BeatmapSet.Metadata.Title, otherSet.BeatmapSet.Metadata.Title, StringComparison.OrdinalIgnoreCase);
comparison = string.Compare(BeatmapSet.Metadata.Title, otherSet.BeatmapSet.Metadata.Title, StringComparison.OrdinalIgnoreCase);
break;
case SortMode.Author:
return string.Compare(BeatmapSet.Metadata.Author.Username, otherSet.BeatmapSet.Metadata.Author.Username, StringComparison.OrdinalIgnoreCase);
comparison = string.Compare(BeatmapSet.Metadata.Author.Username, otherSet.BeatmapSet.Metadata.Author.Username, StringComparison.OrdinalIgnoreCase);
break;
case SortMode.Source:
return string.Compare(BeatmapSet.Metadata.Source, otherSet.BeatmapSet.Metadata.Source, StringComparison.OrdinalIgnoreCase);
comparison = string.Compare(BeatmapSet.Metadata.Source, otherSet.BeatmapSet.Metadata.Source, StringComparison.OrdinalIgnoreCase);
break;
case SortMode.DateAdded:
return otherSet.BeatmapSet.DateAdded.CompareTo(BeatmapSet.DateAdded);
comparison = otherSet.BeatmapSet.DateAdded.CompareTo(BeatmapSet.DateAdded);
break;
case SortMode.DateRanked:
// Beatmaps which have no ranked date should already be filtered away in this mode.
if (BeatmapSet.DateRanked == null || otherSet.BeatmapSet.DateRanked == null)
return 0;
break;
return otherSet.BeatmapSet.DateRanked.Value.CompareTo(BeatmapSet.DateRanked.Value);
comparison = otherSet.BeatmapSet.DateRanked.Value.CompareTo(BeatmapSet.DateRanked.Value);
break;
case SortMode.LastPlayed:
return -compareUsingAggregateMax(otherSet, b => (b.LastPlayed ?? DateTimeOffset.MinValue).ToUnixTimeSeconds());
comparison = -compareUsingAggregateMax(otherSet, b => (b.LastPlayed ?? DateTimeOffset.MinValue).ToUnixTimeSeconds());
break;
case SortMode.BPM:
return compareUsingAggregateMax(otherSet, b => b.BPM);
comparison = compareUsingAggregateMax(otherSet, b => b.BPM);
break;
case SortMode.Length:
return compareUsingAggregateMax(otherSet, b => b.Length);
comparison = compareUsingAggregateMax(otherSet, b => b.Length);
break;
case SortMode.Difficulty:
return compareUsingAggregateMax(otherSet, b => b.StarRating);
comparison = compareUsingAggregateMax(otherSet, b => b.StarRating);
break;
case SortMode.DateSubmitted:
// Beatmaps which have no submitted date should already be filtered away in this mode.
if (BeatmapSet.DateSubmitted == null || otherSet.BeatmapSet.DateSubmitted == null)
return 0;
break;
return otherSet.BeatmapSet.DateSubmitted.Value.CompareTo(BeatmapSet.DateSubmitted.Value);
comparison = otherSet.BeatmapSet.DateSubmitted.Value.CompareTo(BeatmapSet.DateSubmitted.Value);
break;
}
if (comparison != 0) return comparison;
// If the initial sort could not differentiate, attempt to use DateAdded and OnlineID to order sets in a stable fashion.
// This directionality is a touch arbitrary as while DateAdded puts newer beatmaps first, the OnlineID fallback puts lower IDs first.
// Can potentially be changed in the future if users actually notice / have preference, but keeping it this way matches historical tests.
comparison = otherSet.BeatmapSet.DateAdded.CompareTo(BeatmapSet.DateAdded);
if (comparison != 0) return comparison;
comparison = BeatmapSet.OnlineID.CompareTo(otherSet.BeatmapSet.OnlineID);
if (comparison != 0) return comparison;
// If no online ID is available, fallback to our internal GUID for stability.
// This basically means it's a stable random sort.
return otherSet.BeatmapSet.ID.CompareTo(BeatmapSet.ID);
}
/// <summary>