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a1880e89c2
Closes https://github.com/ppy/osu/issues/27548.
Reference: e53980dd76/osu
!/GameplayElements/Beatmaps/BeatmapTreeManager.cs#L341-L347
185 lines
7.0 KiB
C#
185 lines
7.0 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using osu.Framework.Extensions.IEnumerableExtensions;
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using osu.Game.Beatmaps;
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using osu.Game.Screens.Select.Filter;
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using osu.Game.Utils;
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namespace osu.Game.Screens.Select.Carousel
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{
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public class CarouselBeatmapSet : CarouselGroupEagerSelect
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{
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public override float TotalHeight
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{
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get
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{
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switch (State.Value)
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{
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case CarouselItemState.Selected:
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return DrawableCarouselBeatmapSet.HEIGHT + Items.Count(c => c.Visible) * DrawableCarouselBeatmap.HEIGHT;
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default:
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return DrawableCarouselBeatmapSet.HEIGHT;
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}
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}
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}
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public IEnumerable<CarouselBeatmap> Beatmaps => Items.OfType<CarouselBeatmap>();
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public BeatmapSetInfo BeatmapSet;
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public Func<IEnumerable<BeatmapInfo>, BeatmapInfo?>? GetRecommendedBeatmap;
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public CarouselBeatmapSet(BeatmapSetInfo beatmapSet)
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{
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BeatmapSet = beatmapSet ?? throw new ArgumentNullException(nameof(beatmapSet));
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beatmapSet.Beatmaps
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.Where(b => !b.Hidden)
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.OrderBy(b => b.Ruleset)
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.ThenBy(b => b.StarRating)
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.Select(b => new CarouselBeatmap(b))
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.ForEach(AddItem);
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}
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public override CarouselItem? GetNextToSelect()
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{
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if (LastSelected == null || LastSelected.Filtered.Value)
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{
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if (GetRecommendedBeatmap?.Invoke(Items.OfType<CarouselBeatmap>().Where(b => !b.Filtered.Value).Select(b => b.BeatmapInfo)) is BeatmapInfo recommended)
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return Items.OfType<CarouselBeatmap>().First(b => b.BeatmapInfo.Equals(recommended));
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}
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return base.GetNextToSelect();
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}
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public override int CompareTo(FilterCriteria criteria, CarouselItem other)
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{
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if (!(other is CarouselBeatmapSet otherSet))
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return base.CompareTo(criteria, other);
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int comparison;
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switch (criteria.Sort)
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{
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default:
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case SortMode.Artist:
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comparison = OrdinalSortByCaseStringComparer.DEFAULT.Compare(BeatmapSet.Metadata.Artist, otherSet.BeatmapSet.Metadata.Artist);
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if (comparison == 0)
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goto case SortMode.Title;
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break;
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case SortMode.Title:
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comparison = OrdinalSortByCaseStringComparer.DEFAULT.Compare(BeatmapSet.Metadata.Title, otherSet.BeatmapSet.Metadata.Title);
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break;
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case SortMode.Author:
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comparison = OrdinalSortByCaseStringComparer.DEFAULT.Compare(BeatmapSet.Metadata.Author.Username, otherSet.BeatmapSet.Metadata.Author.Username);
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break;
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case SortMode.Source:
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comparison = OrdinalSortByCaseStringComparer.DEFAULT.Compare(BeatmapSet.Metadata.Source, otherSet.BeatmapSet.Metadata.Source);
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break;
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case SortMode.DateAdded:
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comparison = otherSet.BeatmapSet.DateAdded.CompareTo(BeatmapSet.DateAdded);
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break;
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case SortMode.DateRanked:
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comparison = Nullable.Compare(otherSet.BeatmapSet.DateRanked, BeatmapSet.DateRanked);
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break;
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case SortMode.LastPlayed:
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comparison = -compareUsingAggregateMax(otherSet, static b => (b.LastPlayed ?? DateTimeOffset.MinValue).ToUnixTimeSeconds());
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break;
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case SortMode.BPM:
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comparison = compareUsingAggregateMax(otherSet, static b => b.BPM);
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break;
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case SortMode.Length:
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comparison = compareUsingAggregateMax(otherSet, static b => b.Length);
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break;
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case SortMode.Difficulty:
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comparison = compareUsingAggregateMax(otherSet, static b => b.StarRating);
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break;
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case SortMode.DateSubmitted:
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comparison = Nullable.Compare(otherSet.BeatmapSet.DateSubmitted, BeatmapSet.DateSubmitted);
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break;
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}
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if (comparison != 0) return comparison;
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// If the initial sort could not differentiate, attempt to use DateAdded to order sets in a stable fashion.
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// The directionality of this matches the current SortMode.DateAdded, but we may want to reconsider if that becomes a user decision (ie. asc / desc).
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comparison = otherSet.BeatmapSet.DateAdded.CompareTo(BeatmapSet.DateAdded);
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if (comparison != 0) return comparison;
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// If DateAdded fails to break the tie, fallback to our internal GUID for stability.
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// This basically means it's a stable random sort.
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return otherSet.BeatmapSet.ID.CompareTo(BeatmapSet.ID);
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}
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/// <summary>
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/// All beatmaps which are not filtered and valid for display.
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/// </summary>
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protected IEnumerable<BeatmapInfo> ValidBeatmaps
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{
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get
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{
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foreach (var item in Items) // iterating over Items directly to not allocate 2 enumerators
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{
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if (item is CarouselBeatmap b && (!b.Filtered.Value || b.State.Value == CarouselItemState.Selected))
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yield return b.BeatmapInfo;
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}
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}
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}
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/// <summary>
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/// Whether there are available beatmaps which are not filtered and valid for display.
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/// Cheaper alternative to <see cref="ValidBeatmaps"/>.Any()
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/// </summary>
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public bool HasValidBeatmaps
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{
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get
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{
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foreach (var item in Items) // iterating over Items directly to not allocate 2 enumerators
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{
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if (item is CarouselBeatmap b && (!b.Filtered.Value || b.State.Value == CarouselItemState.Selected))
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return true;
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}
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return false;
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}
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}
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private int compareUsingAggregateMax(CarouselBeatmapSet other, Func<BeatmapInfo, double> func)
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{
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bool ourBeatmaps = HasValidBeatmaps;
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bool otherBeatmaps = other.HasValidBeatmaps;
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if (!ourBeatmaps && !otherBeatmaps) return 0;
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if (!ourBeatmaps) return -1;
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if (!otherBeatmaps) return 1;
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return ValidBeatmaps.Max(func).CompareTo(other.ValidBeatmaps.Max(func));
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}
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public override void Filter(FilterCriteria criteria)
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{
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base.Filter(criteria);
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Filtered.Value = Items.All(i => i.Filtered.Value);
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}
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public override string ToString() => BeatmapSet.ToString();
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}
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}
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