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osu-lazer/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/EndTimeObjectPatternGenerator.cs
2019-06-30 21:58:30 +09:00

97 lines
3.1 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.
using System.Collections.Generic;
using osu.Game.Rulesets.Mania.MathUtils;
using osu.Game.Rulesets.Objects;
using osu.Game.Rulesets.Objects.Types;
using System.Linq;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Mania.Objects;
namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
{
internal class EndTimeObjectPatternGenerator : PatternGenerator
{
private readonly double endTime;
public EndTimeObjectPatternGenerator(FastRandom random, HitObject hitObject, ManiaBeatmap beatmap, IBeatmap originalBeatmap)
: base(random, hitObject, beatmap, new Pattern(), originalBeatmap)
{
endTime = (HitObject as IHasEndTime)?.EndTime ?? 0;
}
public override IEnumerable<Pattern> Generate()
{
yield return generate();
}
private Pattern generate()
{
var pattern = new Pattern();
bool generateHold = endTime - HitObject.StartTime >= 100;
switch (TotalColumns)
{
case 8 when HitObject.Samples.Any(s => s.Name == HitSampleInfo.HIT_FINISH) && endTime - HitObject.StartTime < 1000:
addToPattern(pattern, 0, generateHold);
break;
case 8:
addToPattern(pattern, FindAvailableColumn(GetRandomColumn(), PreviousPattern), generateHold);
break;
default:
if (TotalColumns > 0)
addToPattern(pattern, GetRandomColumn(), generateHold);
break;
}
return pattern;
}
/// <summary>
/// Constructs and adds a note to a pattern.
/// </summary>
/// <param name="pattern">The pattern to add to.</param>
/// <param name="column">The column to add the note to.</param>
/// <param name="holdNote">Whether to add a hold note.</param>
private void addToPattern(Pattern pattern, int column, bool holdNote)
{
ManiaHitObject newObject;
if (holdNote)
{
var hold = new HoldNote
{
StartTime = HitObject.StartTime,
Column = column,
Duration = endTime - HitObject.StartTime
};
if (hold.Head.Samples == null)
hold.Head.Samples = new List<HitSampleInfo>();
hold.Head.Samples.Add(new HitSampleInfo { Name = HitSampleInfo.HIT_NORMAL });
hold.Tail.Samples = HitObject.Samples;
newObject = hold;
}
else
{
newObject = new Note
{
StartTime = HitObject.StartTime,
Samples = HitObject.Samples,
Column = column
};
}
pattern.Add(newObject);
}
}
}