From 4d0e4f4adeb0fb1c5c7ac0312b054dd4312d21fb Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Fri, 9 Oct 2020 21:11:12 +0900
Subject: [PATCH] Fix incorrect initial density

---
 osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs b/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
index 524ea27efa..c0fbd47899 100644
--- a/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
+++ b/osu.Game.Rulesets.Mania/Beatmaps/ManiaBeatmapConverter.cs
@@ -116,7 +116,8 @@ namespace osu.Game.Rulesets.Mania.Beatmaps
                 prevNoteTimes.RemoveAt(0);
             prevNoteTimes.Add(newNoteTime);
 
-            density = (prevNoteTimes[^1] - prevNoteTimes[0]) / prevNoteTimes.Count;
+            if (prevNoteTimes.Count >= 2)
+                density = (prevNoteTimes[^1] - prevNoteTimes[0]) / prevNoteTimes.Count;
         }
 
         private double lastTime;