From c9f364d6a086c7582040c9b66a94eca09e8ce25e Mon Sep 17 00:00:00 2001 From: Khang Date: Wed, 24 Aug 2022 02:10:19 -0400 Subject: [PATCH] Document why beatLength can be NaN --- osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs | 2 ++ 1 file changed, 2 insertions(+) diff --git a/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs b/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs index f064d89e19..75500fbc4e 100644 --- a/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs +++ b/osu.Game/Beatmaps/Formats/LegacyBeatmapDecoder.cs @@ -373,6 +373,8 @@ namespace osu.Game.Beatmaps.Formats string[] split = line.Split(','); double time = getOffsetTime(Parsing.ParseDouble(split[0].Trim())); + + // beatLength is allowed to be NaN to handle an edge case in which some beatmaps use NaN slider velocity to disable slider tick generation (see LegacyDifficultyControlPoint). double beatLength = Parsing.ParseDouble(split[1].Trim(), allowNaN: true); // If beatLength is NaN, speedMultiplier should still be 1 because all comparisons against NaN are false.