From 26b91c96fbfdc1568e79c39f1041d9b584914e1f Mon Sep 17 00:00:00 2001
From: smoogipoo <smoogipoo@smgi.me>
Date: Mon, 15 Oct 2018 12:25:42 +0900
Subject: [PATCH] Fix wrong number of ticks on some legacy beatmaps

---
 osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs | 3 ++-
 osu.Game.Rulesets.Osu/Objects/Slider.cs               | 8 +++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs
index 9e0e649eb2..14245ec8ac 100644
--- a/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs
+++ b/osu.Game.Rulesets.Osu/Beatmaps/OsuBeatmapConverter.cs
@@ -43,7 +43,8 @@ namespace osu.Game.Rulesets.Osu.Beatmaps
                     Position = positionData?.Position ?? Vector2.Zero,
                     NewCombo = comboData?.NewCombo ?? false,
                     ComboOffset = comboData?.ComboOffset ?? 0,
-                    LegacyLastTickOffset = legacyOffset?.LegacyLastTickOffset
+                    LegacyLastTickOffset = legacyOffset?.LegacyLastTickOffset,
+                    TickDistanceMultiplier = beatmap.BeatmapInfo.BeatmapVersion < 8 ? 1f / beatmap.ControlPointInfo.DifficultyPointAt(original.StartTime).SpeedMultiplier : 1
                 };
             }
             else if (endTimeData != null)
diff --git a/osu.Game.Rulesets.Osu/Objects/Slider.cs b/osu.Game.Rulesets.Osu/Objects/Slider.cs
index 7a0dcc77a6..1901c852ed 100644
--- a/osu.Game.Rulesets.Osu/Objects/Slider.cs
+++ b/osu.Game.Rulesets.Osu/Objects/Slider.cs
@@ -95,6 +95,12 @@ namespace osu.Game.Rulesets.Osu.Objects
         public double Velocity;
         public double TickDistance;
 
+        /// <summary>
+        /// An extra multiplier that affects the number of ticks generated by this <see cref="Slider"/>.
+        /// An increase in this value increases <see cref="TickDistance"/>, which reduces the number of ticks generated.
+        /// </summary>
+        public double TickDistanceMultiplier = 1;
+
         public HitCircle HeadCircle;
         public SliderTailCircle TailCircle;
 
@@ -108,7 +114,7 @@ namespace osu.Game.Rulesets.Osu.Objects
             double scoringDistance = base_scoring_distance * difficulty.SliderMultiplier * difficultyPoint.SpeedMultiplier;
 
             Velocity = scoringDistance / timingPoint.BeatLength;
-            TickDistance = scoringDistance / difficulty.SliderTickRate;
+            TickDistance = scoringDistance / difficulty.SliderTickRate * TickDistanceMultiplier;
         }
 
         protected override void CreateNestedHitObjects()