h1or4dme8/osu-lazer
1
0
Fork 0
mirror of https://github.com/ppy/osu.git synced 2024-11-11 09:27:29 +08:00
Code Issues Releases Wiki Activity

Avoid allocating list storage in Pattern until first usage

Browse Source 
Patterns can often be constructed only to never be used.
This commit is contained in:
Dean Herbert 2021-09-20 16:02:02 +09:00
parent d96d1b3e47
commit 98f1c1cc29
1 changed files with 24 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
osu.Game.Rulesets.Mania/Beatmaps/Patterns/Pattern.cs
View File

@ -2,6 +2,7 @@
// See the LICENCE file in the repository root for full licence text.
using System.Collections.Generic;
using System.Linq;
using osu.Game.Rulesets.Mania.Objects;
namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
@ -11,26 +12,25 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
/// </summary>
internal class Pattern
{
private readonly List<ManiaHitObject> hitObjects = new List<ManiaHitObject>();
private readonly HashSet<int> containedColumns = new HashSet<int>();
private List<ManiaHitObject> hitObjects;
private HashSet<int> containedColumns;
/// <summary>
/// All the hit objects contained in this pattern.
/// </summary>
public IEnumerable<ManiaHitObject> HitObjects => hitObjects;
public IEnumerable<ManiaHitObject> HitObjects => hitObjects ?? Enumerable.Empty<ManiaHitObject>();
/// <summary>
/// Check whether a column of this patterns contains a hit object.
/// </summary>
/// <param name="column">The column index.</param>
/// <returns>Whether the column with index <paramref name="column"/> contains a hit object.</returns>
public bool ColumnHasObject(int column) => containedColumns.Contains(column);
public bool ColumnHasObject(int column) => containedColumns?.Contains(column) ?? false;
/// <summary>
/// Amount of columns taken up by hit objects in this pattern.
/// </summary>
public int ColumnWithObjects => containedColumns.Count;
public int ColumnWithObjects => containedColumns?.Count ?? 0;
/// <summary>
/// Adds a hit object to this pattern.
@ -38,6 +38,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
/// <param name="hitObject">The hit object to add.</param>
public void Add(ManiaHitObject hitObject)
{
prepareStorage();
hitObjects.Add(hitObject);
containedColumns.Add(hitObject.Column);
}
@ -48,10 +50,15 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
/// <param name="other">The other pattern.</param>
public void Add(Pattern other)
{
hitObjects.AddRange(other.HitObjects);
prepareStorage();
foreach (var h in other.hitObjects)
containedColumns.Add(h.Column);
if (other.hitObjects != null)
{
hitObjects.AddRange(other.hitObjects);
foreach (var h in other.hitObjects)
containedColumns.Add(h.Column);
}
}
/// <summary>
@ -59,8 +66,14 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns
/// </summary>
public void Clear()
{
hitObjects.Clear();
containedColumns.Clear();
hitObjects?.Clear();
containedColumns?.Clear();
}
private void prepareStorage()
{
hitObjects ??= new List<ManiaHitObject>();
containedColumns ??= new HashSet<int>();
}
}
}