diff --git a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs index a09ef6d5b6..d03eb0b3c9 100644 --- a/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs +++ b/osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/DistanceObjectPatternGenerator.cs @@ -483,12 +483,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy if (!(HitObject is IHasPathWithRepeats curveData)) return null; - // mathematically speaking this could be done by calculating (time - HitObject.StartTime) / SegmentDuration - // however, floating-point operations can introduce inaccuracies - therefore resort to iterated addition - // (all callers use this method to calculate repeat point times, so this way is consistent and deterministic) - int index = 0; - for (double nodeTime = HitObject.StartTime; nodeTime < time; nodeTime += SegmentDuration) - index += 1; + // mathematically speaking this should be a whole number always, but floating-point arithmetic is not so kind + var index = (int)Math.Round(SegmentDuration == 0 ? 0 : (time - HitObject.StartTime) / SegmentDuration, MidpointRounding.AwayFromZero); // avoid slicing the list & creating copies, if at all possible. return index == 0 ? curveData.NodeSamples : curveData.NodeSamples.Skip(index).ToList();