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Code Issues Releases Wiki Activity

Remove allocation of control point with every binarysearch

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This commit is contained in:
smoogipoo 2018-10-11 18:38:04 +09:00
parent 5b544a0c97
commit 10fb1d20d1
1 changed files with 12 additions and 6 deletions
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18
osu.Game/Beatmaps/ControlPoints/ControlPointInfo.cs
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@ -12,6 +12,11 @@ namespace osu.Game.Beatmaps.ControlPoints
[Serializable]
public class ControlPointInfo
{
private readonly TimingControlPoint timingPointSearch = new TimingControlPoint();
private readonly DifficultyControlPoint difficultyPointSearch = new DifficultyControlPoint();
private readonly SampleControlPoint samplePointSearch = new SampleControlPoint();
private readonly EffectControlPoint effectPointSearch = new EffectControlPoint();
/// <summary>
/// All timing points.
/// </summary>
@ -41,28 +46,28 @@ 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, difficultyPointSearch);
/// <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, effectPointSearch);
/// <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, samplePointSearch, SamplePoints.FirstOrDefault());
/// <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, timingPointSearch, TimingPoints.FirstOrDefault());
/// <summary>
/// Finds the maximum BPM represented by any timing control point.
@ -92,7 +97,7 @@ namespace osu.Game.Beatmaps.ControlPoints
/// <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>
/// <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 searchPoint, T prePoint = null)
where T : ControlPoint, new()
{
if (list == null)
@ -104,7 +109,8 @@ namespace osu.Game.Beatmaps.ControlPoints
if (time < list[0].Time)
return prePoint ?? new T();
int index = list.BinarySearch(new T { Time = time });
searchPoint.Time = time;
int index = list.BinarySearch(searchPoint);
// Check if we've found an exact match (t == time)
if (index >= 0)