From 068dfcb19aeeaf1ce1a3bbb29b9451625771f2f5 Mon Sep 17 00:00:00 2001
From: smoogipooo <smoogipooo@gmail.com>
Date: Mon, 7 Aug 2017 15:22:31 +0900
Subject: [PATCH] Default CreateSpeedAdjustmentContainer implementation.

---
 osu.Game/Rulesets/Timing/SpeedAdjustmentContainer.cs | 2 +-
 osu.Game/Rulesets/UI/SpeedAdjustedHitRenderer.cs     | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/osu.Game/Rulesets/Timing/SpeedAdjustmentContainer.cs b/osu.Game/Rulesets/Timing/SpeedAdjustmentContainer.cs
index 6be721f6e7..c7249d5b84 100644
--- a/osu.Game/Rulesets/Timing/SpeedAdjustmentContainer.cs
+++ b/osu.Game/Rulesets/Timing/SpeedAdjustmentContainer.cs
@@ -48,7 +48,7 @@ namespace osu.Game.Rulesets.Timing
         /// Creates a new <see cref="SpeedAdjustmentContainer"/>.
         /// </summary>
         /// <param name="controlPoint">The <see cref="MultiplierControlPoint"/> which provides the speed adjustments for this container.</param>
-        protected SpeedAdjustmentContainer(MultiplierControlPoint controlPoint)
+        public SpeedAdjustmentContainer(MultiplierControlPoint controlPoint)
         {
             ControlPoint = controlPoint;
 
diff --git a/osu.Game/Rulesets/UI/SpeedAdjustedHitRenderer.cs b/osu.Game/Rulesets/UI/SpeedAdjustedHitRenderer.cs
index 4a560748c1..5f8bebc213 100644
--- a/osu.Game/Rulesets/UI/SpeedAdjustedHitRenderer.cs
+++ b/osu.Game/Rulesets/UI/SpeedAdjustedHitRenderer.cs
@@ -86,6 +86,9 @@ namespace osu.Game.Rulesets.UI
                 .GroupBy(s => s.TimingPoint.BeatLength * s.DifficultyPoint.SpeedMultiplier).Select(g => g.First());
 
             DefaultControlPoints.AddRange(timingChanges);
+
+            if (DefaultControlPoints.Count == 0)
+                DefaultControlPoints.Add(new MultiplierControlPoint());
         }
 
         /// <summary>
@@ -105,6 +108,6 @@ namespace osu.Game.Rulesets.UI
             return new MultiplierControlPoint(time, DefaultControlPoints[index].DeepClone());
         }
 
-        protected abstract SpeedAdjustmentContainer CreateSpeedAdjustmentContainer(MultiplierControlPoint controlPoint);
+        protected virtual SpeedAdjustmentContainer CreateSpeedAdjustmentContainer(MultiplierControlPoint controlPoint) => new SpeedAdjustmentContainer(controlPoint);
     }
 }