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Make ControlPointInfo return a set default control point

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This commit is contained in:
smoogipoo 2017-12-26 19:33:01 +09:00
parent 836d807f4f
commit 3113a55a98
1 changed files with 16 additions and 11 deletions
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27
osu.Game/Beatmaps/ControlPoints/ControlPointInfo.cs
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@ -12,6 +12,11 @@ namespace osu.Game.Beatmaps.ControlPoints
[Serializable]
public class ControlPointInfo
{
private static readonly TimingControlPoint default_timing_point = new TimingControlPoint();
private static readonly DifficultyControlPoint default_difficulty_point = new DifficultyControlPoint();
private static readonly SampleControlPoint default_sample_point = new SampleControlPoint();
private static readonly EffectControlPoint default_effect_point = new EffectControlPoint();
/// <summary>
/// All timing points.
/// </summary>
@ -41,68 +46,68 @@ namespace osu.Game.Beatmaps.ControlPoints
/// </summary>
/// <param name="time">The time to find the difficulty control point at.</param>
/// <returns>The difficulty control point.</returns>
public DifficultyControlPoint DifficultyPointAt(double time) => binarySearch(DifficultyPoints, time);
public DifficultyControlPoint DifficultyPointAt(double time) => binarySearch(DifficultyPoints, time, default_difficulty_point);
/// <summary>
/// Finds the effect control point that is active at <paramref name="time"/>.
/// </summary>
/// <param name="time">The time to find the effect control point at.</param>
/// <returns>The effect control point.</returns>
public EffectControlPoint EffectPointAt(double time) => binarySearch(EffectPoints, time);
public EffectControlPoint EffectPointAt(double time) => binarySearch(EffectPoints, time, default_effect_point);
/// <summary>
/// Finds the sound control point that is active at <paramref name="time"/>.
/// </summary>
/// <param name="time">The time to find the sound control point at.</param>
/// <returns>The sound control point.</returns>
public SampleControlPoint SamplePointAt(double time) => binarySearch(SamplePoints, time, SamplePoints.FirstOrDefault());
public SampleControlPoint SamplePointAt(double time) => binarySearch(SamplePoints, time, SamplePoints.FirstOrDefault() ?? default_sample_point);
/// <summary>
/// Finds the timing control point that is active at <paramref name="time"/>.
/// </summary>
/// <param name="time">The time to find the timing control point at.</param>
/// <returns>The timing control point.</returns>
public TimingControlPoint TimingPointAt(double time) => binarySearch(TimingPoints, time, TimingPoints.FirstOrDefault());
public TimingControlPoint TimingPointAt(double time) => binarySearch(TimingPoints, time, TimingPoints.FirstOrDefault() ?? default_timing_point);
[JsonIgnore]
/// <summary>
/// Finds the maximum BPM represented by any timing control point.
/// </summary>
public double BPMMaximum =>
60000 / (TimingPoints.OrderBy(c => c.BeatLength).FirstOrDefault() ?? new TimingControlPoint()).BeatLength;
60000 / (TimingPoints.OrderBy(c => c.BeatLength).FirstOrDefault() ?? default_timing_point).BeatLength;
[JsonIgnore]
/// <summary>
/// Finds the minimum BPM represented by any timing control point.
/// </summary>
public double BPMMinimum =>
60000 / (TimingPoints.OrderByDescending(c => c.BeatLength).FirstOrDefault() ?? new TimingControlPoint()).BeatLength;
60000 / (TimingPoints.OrderByDescending(c => c.BeatLength).FirstOrDefault() ?? default_timing_point).BeatLength;
[JsonIgnore]
/// <summary>
/// Finds the mode BPM (most common BPM) represented by the control points.
/// </summary>
public double BPMMode =>
60000 / (TimingPoints.GroupBy(c => c.BeatLength).OrderByDescending(grp => grp.Count()).FirstOrDefault()?.FirstOrDefault() ?? new TimingControlPoint()).BeatLength;
60000 / (TimingPoints.GroupBy(c => c.BeatLength).OrderByDescending(grp => grp.Count()).FirstOrDefault()?.FirstOrDefault() ?? default_timing_point).BeatLength;
/// <summary>
/// Binary searches one of the control point lists to find the active control point at <paramref name="time"/>.
/// </summary>
/// <param name="list">The list to search.</param>
/// <param name="time">The time to find the control point at.</param>
/// <param name="prePoint">The control point to use when <paramref name="time"/> is before any control points. If null, a new control point will be constructed.</param>
/// <param name="defaultPoint">The control point to use when there is not control point before <paramref name="time"/>.</param>
/// <returns>The active control point at <paramref name="time"/>.</returns>
private T binarySearch<T>(SortedList<T> list, double time, T prePoint = null)
private T binarySearch<T>(SortedList<T> list, double time, T defaultPoint)
where T : ControlPoint, new()
{
if (list == null)
throw new ArgumentNullException(nameof(list));
if (list.Count == 0)
return new T();
return defaultPoint;
if (time < list[0].Time)
return prePoint ?? new T();
return defaultPoint;
int index = list.BinarySearch(new T { Time = time });