private IEnumerable <Issue> GetRecoveryIssues(Beatmap beatmap, Spinner spinner)
{
HitObject nextObject = spinner.Next();
// Do not check time between two spinners since all you'd need to do is keep spinning.
if (nextObject == null || nextObject is Spinner)
{
yield break;
}
double recoveryTime = nextObject.time - spinner.endTime;
var line = beatmap.GetTimingLine <UninheritedLine>(nextObject.time);
double bpmScaling = GetScaledTiming(line.bpm);
double recoveryTimeScaled = recoveryTime / bpmScaling;
double[] recoveryTimeExpected = { 1000, 500, 250 }; // 4, 2 and 1 beats respectively, 240 bpm
// Tries both scaled and regular recoveries, and only if both are exceeded does it create an issue.
for (int diffIndex = 0; diffIndex < recoveryTimeExpected.Length; ++diffIndex)
{
// Picks whichever is greatest of the scaled and regular versions.
double expectedScaledMultiplier = bpmScaling < 1 ? bpmScaling : 1;
double expectedRecovery = Math.Ceiling(recoveryTimeExpected[diffIndex] * expectedScaledMultiplier * expectedMultiplier);
double problemThreshold = recoveryTimeExpected[diffIndex];
double warningThreshold = recoveryTimeExpected[diffIndex] * 1.2;
if (recoveryTimeScaled < problemThreshold && recoveryTime < problemThreshold)
{
yield return(new Issue(GetTemplate("Problem Recovery"), beatmap,
Timestamp.Get(spinner, nextObject), recoveryTime, expectedRecovery)
.ForDifficulties((Beatmap.Difficulty)diffIndex));
}
else if (recoveryTimeScaled < warningThreshold && recoveryTime < warningThreshold)
{
yield return(new Issue(GetTemplate("Warning Recovery"), beatmap,
Timestamp.Get(spinner, nextObject), recoveryTime, expectedRecovery)
.ForDifficulties((Beatmap.Difficulty)diffIndex));
}
}
}