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osu-lazer/osu.Game.Rulesets.Mania/Mods/ManiaModHoldOff.cs
2022-06-17 16:37:17 +09:00

75 lines
2.5 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 System.Linq;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Mania.Objects;
using osu.Game.Rulesets.Mods;
using osu.Framework.Graphics.Sprites;
using System.Collections.Generic;
using osu.Game.Rulesets.Mania.Beatmaps;
namespace osu.Game.Rulesets.Mania.Mods
{
public class ManiaModHoldOff : Mod, IApplicableAfterBeatmapConversion
{
public override string Name => "Hold Off";
public override string Acronym => "HO";
public override double ScoreMultiplier => 1;
public override string Description => @"Replaces all hold notes with normal notes.";
public override IconUsage? Icon => FontAwesome.Solid.DotCircle;
public override ModType Type => ModType.Conversion;
public override Type[] IncompatibleMods => new[] { typeof(ManiaModInvert) };
public const double END_NOTE_ALLOW_THRESHOLD = 0.5;
public void ApplyToBeatmap(IBeatmap beatmap)
{
var maniaBeatmap = (ManiaBeatmap)beatmap;
var newObjects = new List<ManiaHitObject>();
foreach (var h in beatmap.HitObjects.OfType<HoldNote>())
{
// Add a note for the beginning of the hold note
newObjects.Add(new Note
{
Column = h.Column,
StartTime = h.StartTime,
Samples = h.GetNodeSamples(0)
});
// Don't add an end note if the duration is shorter than the threshold
double noteValue = GetNoteDurationInBeatLength(h, maniaBeatmap); // 1/1, 1/2, 1/4, etc.
if (noteValue >= END_NOTE_ALLOW_THRESHOLD)
{
newObjects.Add(new Note
{
Column = h.Column,
StartTime = h.EndTime,
Samples = h.GetNodeSamples((h.NodeSamples?.Count - 1) ?? 1)
});
}
}
maniaBeatmap.HitObjects = maniaBeatmap.HitObjects.OfType<Note>().Concat(newObjects).OrderBy(h => h.StartTime).ToList();
}
public static double GetNoteDurationInBeatLength(HoldNote holdNote, ManiaBeatmap beatmap)
{
double beatLength = beatmap.ControlPointInfo.TimingPointAt(holdNote.StartTime).BeatLength;
return holdNote.Duration / beatLength;
}
}
}