mirror of https://github.com/ppy/osu
114 lines
4.2 KiB
C#
114 lines
4.2 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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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 + Children.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 => InternalChildren.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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.Select(b => new CarouselBeatmap(b))
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.ForEach(AddChild);
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}
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protected 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(Children.OfType<CarouselBeatmap>().Where(b => !b.Filtered.Value).Select(b => b.Beatmap)) is BeatmapInfo recommended)
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return Children.OfType<CarouselBeatmap>().First(b => b.Beatmap == 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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switch (criteria.Sort)
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{
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default:
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case SortMode.Artist:
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return string.Compare(BeatmapSet.Metadata.Artist, otherSet.BeatmapSet.Metadata.Artist, StringComparison.OrdinalIgnoreCase);
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case SortMode.Title:
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return string.Compare(BeatmapSet.Metadata.Title, otherSet.BeatmapSet.Metadata.Title, StringComparison.OrdinalIgnoreCase);
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case SortMode.Author:
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return string.Compare(BeatmapSet.Metadata.Author.Username, otherSet.BeatmapSet.Metadata.Author.Username, StringComparison.OrdinalIgnoreCase);
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case SortMode.DateAdded:
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return otherSet.BeatmapSet.DateAdded.CompareTo(BeatmapSet.DateAdded);
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case SortMode.BPM:
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return compareUsingAggregateMax(otherSet, b => b.BPM);
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case SortMode.Length:
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return compareUsingAggregateMax(otherSet, b => b.Length);
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case SortMode.Difficulty:
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return compareUsingAggregateMax(otherSet, b => b.StarDifficulty);
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}
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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 => Beatmaps.Where(b => !b.Filtered.Value || b.State.Value == CarouselItemState.Selected).Select(b => b.Beatmap);
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private int compareUsingAggregateMax(CarouselBeatmapSet other, Func<BeatmapInfo, double> func)
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{
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var ourBeatmaps = ValidBeatmaps.Any();
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var otherBeatmaps = other.ValidBeatmaps.Any();
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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 = InternalChildren.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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