osu/osu.Game.Rulesets.Taiko/Replays/TaikoAutoGenerator.cs

129 lines
4.6 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;
using System.Linq;
using osu.Framework.Extensions.ObjectExtensions;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Taiko.Objects;
using osu.Game.Rulesets.Replays;
using osu.Game.Rulesets.Taiko.Beatmaps;
using osu.Game.Rulesets.Objects;
namespace osu.Game.Rulesets.Taiko.Replays
{
public class TaikoAutoGenerator : AutoGenerator<TaikoReplayFrame>
{
public new TaikoBeatmap Beatmap => (TaikoBeatmap)base.Beatmap;
private const double swell_hit_speed = 50;
public TaikoAutoGenerator(IBeatmap beatmap)
: base(beatmap)
{
}
protected override void GenerateFrames()
{
if (Beatmap.HitObjects.Count == 0)
return;
bool hitButton = true;
Frames.Add(new TaikoReplayFrame(Beatmap.HitObjects[0].StartTime - 1000));
for (int i = 0; i < Beatmap.HitObjects.Count; i++)
{
TaikoHitObject h = Beatmap.HitObjects[i];
double endTime = h.GetEndTime();
switch (h)
{
case Swell swell:
{
int d = 0;
int count = 0;
int req = swell.RequiredHits;
double hitRate = Math.Min(swell_hit_speed, swell.Duration / req);
for (double j = h.StartTime; j < endTime; j += hitRate)
{
TaikoAction action;
switch (d)
{
default:
case 0:
action = TaikoAction.LeftCentre;
break;
case 1:
action = TaikoAction.LeftRim;
break;
case 2:
action = TaikoAction.RightCentre;
break;
case 3:
action = TaikoAction.RightRim;
break;
}
Frames.Add(new TaikoReplayFrame(j, action));
d = (d + 1) % 4;
if (++count == req)
break;
}
break;
}
case DrumRoll drumRoll:
{
foreach (var tick in drumRoll.NestedHitObjects.OfType<DrumRollTick>())
{
Frames.Add(new TaikoReplayFrame(tick.StartTime, hitButton ? TaikoAction.LeftCentre : TaikoAction.RightCentre));
hitButton = !hitButton;
}
break;
}
case Hit hit:
{
TaikoAction[] actions;
if (hit.Type == HitType.Centre)
{
actions = hit.IsStrong
? new[] { TaikoAction.LeftCentre, TaikoAction.RightCentre }
: new[] { hitButton ? TaikoAction.LeftCentre : TaikoAction.RightCentre };
}
else
{
actions = hit.IsStrong
? new[] { TaikoAction.LeftRim, TaikoAction.RightRim }
: new[] { hitButton ? TaikoAction.LeftRim : TaikoAction.RightRim };
}
Frames.Add(new TaikoReplayFrame(h.StartTime, actions));
break;
}
default:
throw new InvalidOperationException("Unknown hit object type.");
}
var nextHitObject = GetNextObject(i); // Get the next object that requires pressing the same button
bool canDelayKeyUp = nextHitObject == null || nextHitObject.StartTime > endTime + KEY_UP_DELAY;
double calculatedDelay = canDelayKeyUp ? KEY_UP_DELAY : (nextHitObject.AsNonNull().StartTime - endTime) * 0.9;
Frames.Add(new TaikoReplayFrame(endTime + calculatedDelay));
hitButton = !hitButton;
}
}
}
}