From da976000763e6bcf7975714fa971a08b48777bed Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Mon, 8 Oct 2018 16:46:58 +0900
Subject: [PATCH] Fix inaccurate section lengths for first hitobject

---
 osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs b/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
index 5e91ed7a97..028e3acc57 100644
--- a/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
+++ b/osu.Game.Rulesets.Osu/Difficulty/OsuDifficultyCalculator.cs
@@ -38,7 +38,7 @@ protected override DifficultyAttributes Calculate(IBeatmap beatmap, Mod[] mods,
             double sectionLength = section_length * timeRate;
 
             // The first object doesn't generate a strain, so we begin with an incremented section end
-            double currentSectionEnd = 2 * sectionLength;
+            double currentSectionEnd = Math.Ceiling(beatmap.HitObjects.First().StartTime / sectionLength) * sectionLength;
 
             foreach (OsuDifficultyHitObject h in difficultyBeatmap)
             {