osu/osu.Game.Rulesets.Taiko/Objects/DrumRoll.cs

100 lines
3.3 KiB
C#

// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using osu.Game.Rulesets.Objects.Types;
using System;
using System.Collections.Generic;
using System.Linq;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.ControlPoints;
namespace osu.Game.Rulesets.Taiko.Objects
{
public class DrumRoll : TaikoHitObject, IHasEndTime
{
/// <summary>
/// Drum roll distance that results in a duration of 1 speed-adjusted beat length.
/// </summary>
private const float base_distance = 100;
public double EndTime => StartTime + Duration;
public double Duration { get; set; }
/// <summary>
/// Numer of ticks per beat length.
/// </summary>
public int TickRate = 1;
/// <summary>
/// Number of drum roll ticks required for a "Good" hit.
/// </summary>
public double RequiredGoodHits { get; protected set; }
/// <summary>
/// Number of drum roll ticks required for a "Great" hit.
/// </summary>
public double RequiredGreatHits { get; protected set; }
/// <summary>
/// Total number of drum roll ticks.
/// </summary>
public int TotalTicks => Ticks.Count();
/// <summary>
/// Initializes the drum roll ticks if not initialized and returns them.
/// </summary>
public IEnumerable<DrumRollTick> Ticks => ticks ?? (ticks = createTicks());
private List<DrumRollTick> ticks;
/// <summary>
/// The length (in milliseconds) between ticks of this drumroll.
/// <para>Half of this value is the hit window of the ticks.</para>
/// </summary>
private double tickSpacing = 100;
public override void ApplyDefaults(ControlPointInfo controlPointInfo, BeatmapDifficulty difficulty)
{
base.ApplyDefaults(controlPointInfo, difficulty);
TimingControlPoint timingPoint = controlPointInfo.TimingPointAt(StartTime);
tickSpacing = timingPoint.BeatLength / TickRate;
RequiredGoodHits = TotalTicks * Math.Min(0.15, 0.05 + 0.10 / 6 * difficulty.OverallDifficulty);
RequiredGreatHits = TotalTicks * Math.Min(0.30, 0.10 + 0.20 / 6 * difficulty.OverallDifficulty);
}
private List<DrumRollTick> createTicks()
{
var ret = new List<DrumRollTick>();
if (tickSpacing == 0)
return ret;
bool first = true;
for (double t = StartTime; t < EndTime + tickSpacing / 2; t += tickSpacing)
{
ret.Add(new DrumRollTick
{
FirstTick = first,
TickSpacing = tickSpacing,
StartTime = t,
IsStrong = IsStrong,
Samples = new SampleInfoList(Samples.Select(s => new SampleInfo
{
Bank = s.Bank,
Name = @"slidertick",
Volume = s.Volume
}))
});
first = false;
}
return ret;
}
}
}