public IEnumerator DestroyAfterimages()
{
var spacingNote = Note.Thirtysecond;
var spacingTime = Conductor.noteDurations[spacingNote];
var startNote = Note.Quarter;
var start = Conductor.GetNextNote(startNote);
var end = start + Conductor.noteDurations[spacingNote] * afterimages.Count;
PlayerSfx.PlayDashSfx(start, end);
for (int i = 0; i < afterimages.Count; i++)
{
var targetTime = start + i * spacingTime;
afterimages[i].Run(targetTime);
}
yield return(new WaitForNote(startNote));
Destroy(gameObject);
}