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osu-lazer/osu.Game/Screens/Select/Carousel/TopLocalRank.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
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using osu.Framework.Graphics;
using osu.Framework.Threading;
using osu.Game.Beatmaps;
using osu.Game.Online.API;
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using osu.Game.Online.Leaderboards;
using osu.Game.Rulesets;
using osu.Game.Scoring;
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namespace osu.Game.Screens.Select.Carousel
{
public class TopLocalRank : UpdateableRank
{
private readonly BeatmapInfo beatmap;
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[Resolved]
private ScoreManager scores { get; set; }
[Resolved]
private IBindable<RulesetInfo> ruleset { get; set; }
[Resolved]
private IAPIProvider api { get; set; }
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public TopLocalRank(BeatmapInfo beatmap)
: base(null)
{
this.beatmap = beatmap;
}
[BackgroundDependencyLoader]
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private void load()
{
scores.ItemAdded += scoreChanged;
scores.ItemRemoved += scoreChanged;
ruleset.ValueChanged += _ => fetchAndLoadTopScore();
fetchAndLoadTopScore();
}
private void scoreChanged(ScoreInfo score)
{
if (score.BeatmapInfoID == beatmap.ID)
fetchAndLoadTopScore();
}
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private ScheduledDelegate scheduledRankUpdate;
private void fetchAndLoadTopScore()
{
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var rank = fetchTopScore()?.Rank;
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scheduledRankUpdate = Schedule(() =>
{
Rank = rank;
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// Required since presence is changed via IsPresent override
Invalidate(Invalidation.Presence);
});
}
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// We're present if a rank is set, or if there is a pending rank update (IsPresent = true is required for the scheduler to run).
public override bool IsPresent => base.IsPresent && (Rank != null || scheduledRankUpdate?.Completed == false);
private ScoreInfo fetchTopScore()
{
if (scores == null || beatmap == null || ruleset?.Value == null || api?.LocalUser.Value == null)
return null;
return scores.QueryScores(s => s.UserID == api.LocalUser.Value.Id && s.BeatmapInfoID == beatmap.ID && s.RulesetID == ruleset.Value.ID && !s.DeletePending)
.OrderByDescending(s => s.TotalScore)
.FirstOrDefault();
}
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protected override void Dispose(bool isDisposing)
{
base.Dispose(isDisposing);
if (scores != null)
{
scores.ItemAdded -= scoreChanged;
scores.ItemRemoved -= scoreChanged;
}
}
}
}