mirror of https://github.com/ppy/osu
123 lines
4.6 KiB
C#
123 lines
4.6 KiB
C#
// 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.
|
|
|
|
#nullable disable
|
|
|
|
using System;
|
|
using osu.Game.Beatmaps.Timing;
|
|
using osu.Game.Rulesets.Objects;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using osu.Game.Beatmaps.ControlPoints;
|
|
using Newtonsoft.Json;
|
|
using osu.Game.IO.Serialization.Converters;
|
|
|
|
namespace osu.Game.Beatmaps
|
|
{
|
|
public class Beatmap<T> : IBeatmap<T>
|
|
where T : HitObject
|
|
{
|
|
private BeatmapDifficulty difficulty = new BeatmapDifficulty();
|
|
|
|
public BeatmapDifficulty Difficulty
|
|
{
|
|
get => difficulty;
|
|
set
|
|
{
|
|
difficulty = value;
|
|
|
|
if (beatmapInfo != null)
|
|
beatmapInfo.Difficulty = difficulty.Clone();
|
|
}
|
|
}
|
|
|
|
private BeatmapInfo beatmapInfo;
|
|
|
|
public BeatmapInfo BeatmapInfo
|
|
{
|
|
get => beatmapInfo;
|
|
set
|
|
{
|
|
beatmapInfo = value;
|
|
|
|
if (beatmapInfo?.Difficulty != null)
|
|
Difficulty = beatmapInfo.Difficulty.Clone();
|
|
}
|
|
}
|
|
|
|
public Beatmap()
|
|
{
|
|
beatmapInfo = new BeatmapInfo
|
|
{
|
|
Metadata = new BeatmapMetadata
|
|
{
|
|
Artist = @"Unknown",
|
|
Title = @"Unknown",
|
|
Author = { Username = @"Unknown Creator" },
|
|
},
|
|
DifficultyName = @"Normal",
|
|
Difficulty = Difficulty,
|
|
};
|
|
}
|
|
|
|
[JsonIgnore]
|
|
public BeatmapMetadata Metadata => BeatmapInfo.Metadata;
|
|
|
|
public ControlPointInfo ControlPointInfo { get; set; } = new ControlPointInfo();
|
|
|
|
public List<BreakPeriod> Breaks { get; set; } = new List<BreakPeriod>();
|
|
|
|
[JsonIgnore]
|
|
public double TotalBreakTime => Breaks.Sum(b => b.Duration);
|
|
|
|
[JsonConverter(typeof(TypedListConverter<HitObject>))]
|
|
public List<T> HitObjects { get; set; } = new List<T>();
|
|
|
|
IReadOnlyList<T> IBeatmap<T>.HitObjects => HitObjects;
|
|
|
|
IReadOnlyList<HitObject> IBeatmap.HitObjects => HitObjects;
|
|
|
|
public virtual IEnumerable<BeatmapStatistic> GetStatistics() => Enumerable.Empty<BeatmapStatistic>();
|
|
|
|
public double GetMostCommonBeatLength()
|
|
{
|
|
// The last playable time in the beatmap - the last timing point extends to this time.
|
|
// Note: This is more accurate and may present different results because osu-stable didn't have the ability to calculate slider durations in this context.
|
|
double lastTime = HitObjects.LastOrDefault()?.GetEndTime() ?? ControlPointInfo.TimingPoints.LastOrDefault()?.Time ?? 0;
|
|
|
|
var mostCommon =
|
|
// Construct a set of (beatLength, duration) tuples for each individual timing point.
|
|
ControlPointInfo.TimingPoints.Select((t, i) =>
|
|
{
|
|
if (t.Time > lastTime)
|
|
return (beatLength: t.BeatLength, 0);
|
|
|
|
// osu-stable forced the first control point to start at 0.
|
|
// This is reproduced here to maintain compatibility around osu!mania scroll speed and song select display.
|
|
double currentTime = i == 0 ? 0 : t.Time;
|
|
double nextTime = i == ControlPointInfo.TimingPoints.Count - 1 ? lastTime : ControlPointInfo.TimingPoints[i + 1].Time;
|
|
|
|
return (beatLength: t.BeatLength, duration: nextTime - currentTime);
|
|
})
|
|
// Aggregate durations into a set of (beatLength, duration) tuples for each beat length
|
|
.GroupBy(t => Math.Round(t.beatLength * 1000) / 1000)
|
|
.Select(g => (beatLength: g.Key, duration: g.Sum(t => t.duration)))
|
|
// Get the most common one, or 0 as a suitable default
|
|
.OrderByDescending(i => i.duration).FirstOrDefault();
|
|
|
|
return mostCommon.beatLength;
|
|
}
|
|
|
|
IBeatmap IBeatmap.Clone() => Clone();
|
|
|
|
public Beatmap<T> Clone() => (Beatmap<T>)MemberwiseClone();
|
|
}
|
|
|
|
public class Beatmap : Beatmap<HitObject>
|
|
{
|
|
public new Beatmap Clone() => (Beatmap)base.Clone();
|
|
|
|
public override string ToString() => BeatmapInfo?.ToString() ?? base.ToString();
|
|
}
|
|
}
|