Remove the concept of beatmap events, rename BreakEvent -> BreakPeriod.

osu.Game.Rulesets.Mania/Beatmaps/Patterns/Legacy/PatternGenerator.cs

@@ -90,7 +90,7 @@ namespace osu.Game.Rulesets.Mania.Beatmaps.Patterns.Legacy
                 HitObject firstObject = Beatmap.HitObjects.FirstOrDefault();
 
                 double drainTime = (lastObject?.StartTime ?? 0) - (firstObject?.StartTime ?? 0);
-                drainTime -= Beatmap.EventInfo.TotalBreakTime;
+                drainTime -= Beatmap.TotalBreakTime;
 
                 if (drainTime == 0)
                     drainTime = 10000;

osu.Game/Beatmaps/Beatmap.cs

@@ -2,11 +2,11 @@
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
 using OpenTK.Graphics;
-using osu.Game.Beatmaps.Events;
 using osu.Game.Beatmaps.Timing;
 using osu.Game.Database;
 using osu.Game.Rulesets.Objects;
 using System.Collections.Generic;
+using System.Linq;
 
 namespace osu.Game.Beatmaps
 {
@@ -18,7 +18,7 @@ namespace osu.Game.Beatmaps
     {
         public BeatmapInfo BeatmapInfo;
         public TimingInfo TimingInfo = new TimingInfo();
-        public EventInfo EventInfo = new EventInfo();
+        public List<BreakPeriod> Breaks = new List<BreakPeriod>();
         public readonly List<Color4> ComboColors = new List<Color4>
         {
             new Color4(17, 136, 170, 255),
@@ -34,6 +34,11 @@ namespace osu.Game.Beatmaps
         /// </summary>
         public List<T> HitObjects;
 
+        /// <summary>
+        /// Total amount of break time in the beatmap.
+        /// </summary>
+        public double TotalBreakTime => Breaks.Sum(b => b.Duration);
+
         /// <summary>
         /// Constructs a new beatmap.
         /// </summary>
@@ -42,7 +47,7 @@ namespace osu.Game.Beatmaps
         {
             BeatmapInfo = original?.BeatmapInfo ?? BeatmapInfo;
             TimingInfo = original?.TimingInfo ?? TimingInfo;
-            EventInfo = original?.EventInfo ?? EventInfo;
+            Breaks = original?.Breaks ?? Breaks;
             ComboColors = original?.ComboColors ?? ComboColors;
         }
     }

osu.Game/Beatmaps/Events/BackgroundEvent.cs

@@ -1,13 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-namespace osu.Game.Beatmaps.Events
-{
-    public class BackgroundEvent : Event
-    {
-        /// <summary>
-        /// The file name.
-        /// </summary>
-        public string Filename;
-    }
-}

osu.Game/Beatmaps/Events/Event.cs

@@ -1,13 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-namespace osu.Game.Beatmaps.Events
-{
-    public abstract class Event
-    {
-        /// <summary>
-        /// The event start time.
-        /// </summary>
-        public double StartTime;
-    }
-}

osu.Game/Beatmaps/Events/EventInfo.cs

@@ -1,33 +0,0 @@
-// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
-// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
-
-using System.Collections.Generic;
-using System.Linq;
-
-namespace osu.Game.Beatmaps.Events
-{
-    public class EventInfo
-    {
-        /// <summary>
-        /// All the background events.
-        /// </summary>
-        public readonly List<BackgroundEvent> Backgrounds = new List<BackgroundEvent>();
-
-        /// <summary>
-        /// All the break events.
-        /// </summary>
-        public readonly List<BreakEvent> Breaks = new List<BreakEvent>();
-
-        /// <summary>
-        /// Total duration of all breaks.
-        /// </summary>
-        public double TotalBreakTime => Breaks.Sum(b => b.Duration);
-
-        /// <summary>
-        /// Retrieves the active background at a time.
-        /// </summary>
-        /// <param name="time">The time to retrieve the background at.</param>
-        /// <returns>The background.</returns>
-        public BackgroundEvent BackgroundAt(double time) => Backgrounds.FirstOrDefault(b => b.StartTime <= time);
-    }
-}

osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs

@@ -5,7 +5,6 @@ using System;
 using System.Globalization;
 using System.IO;
 using OpenTK.Graphics;
-using osu.Game.Beatmaps.Events;
 using osu.Game.Beatmaps.Timing;
 using osu.Game.Beatmaps.Legacy;
 using osu.Game.Rulesets.Objects.Legacy;
@@ -217,18 +216,12 @@ namespace osu.Game.Beatmaps.Formats
                 case EventType.Background:
                     string filename = split[2].Trim('"');
 
-                    beatmap.EventInfo.Backgrounds.Add(new BackgroundEvent
-                    {
-                        StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
-                        Filename = filename
-                    });
-
                     if (type == EventType.Background)
                         beatmap.BeatmapInfo.Metadata.BackgroundFile = filename;
 
                     break;
                 case EventType.Break:
-                    var breakEvent = new BreakEvent
+                    var breakEvent = new BreakPeriod
                     {
                         StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
                         EndTime = double.Parse(split[2], NumberFormatInfo.InvariantInfo)
@@ -237,7 +230,7 @@ namespace osu.Game.Beatmaps.Formats
                     if (!breakEvent.HasEffect)
                         return;
 
-                    beatmap.EventInfo.Breaks.Add(breakEvent);
+                    beatmap.Breaks.Add(breakEvent);
                     break;
             }
         }

osu.Game/Beatmaps/Timing/BreakPeriod.cs

@@ -1,27 +1,32 @@
 // Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
 // Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
 
-namespace osu.Game.Beatmaps.Events
+namespace osu.Game.Beatmaps.Timing
 {
-    public class BreakEvent : Event
+    public class BreakPeriod
     {
         /// <summary>
         /// The minimum duration required for a break to have any effect.
         /// </summary>
         private const double min_break_duration = 650;
 
+        /// <summary>
+        /// The break start time.
+        /// </summary>
+        public double StartTime;
+
         /// <summary>
         /// The break end time.
         /// </summary>
         public double EndTime;
 
         /// <summary>
-        /// The duration of the break.
+        /// The break duration.
         /// </summary>
         public double Duration => EndTime - StartTime;
 
         /// <summary>
-        /// Whether the break has any effect. Breaks that are too short are culled before they reach the EventInfo.
+        /// Whether the break has any effect. Breaks that are too short are culled before they are added to the beatmap.
         /// </summary>
         public bool HasEffect => Duration >= min_break_duration;
     }

osu.Game/osu.Game.csproj

@@ -74,10 +74,6 @@
     <Compile Include="Audio\SampleInfoList.cs" />
     <Compile Include="Beatmaps\Drawables\BeatmapBackgroundSprite.cs" />
     <Compile Include="Beatmaps\DifficultyCalculator.cs" />
-    <Compile Include="Beatmaps\Events\BackgroundEvent.cs" />
-    <Compile Include="Beatmaps\Events\BreakEvent.cs" />
-    <Compile Include="Beatmaps\Events\Event.cs" />
-    <Compile Include="Beatmaps\Events\EventInfo.cs" />
     <Compile Include="Online\API\Requests\PostMessageRequest.cs" />
     <Compile Include="Online\Chat\ErrorMessage.cs" />
     <Compile Include="Overlays\Chat\ChatTabControl.cs" />
@@ -91,6 +87,7 @@
     <Compile Include="Rulesets\Beatmaps\BeatmapConverter.cs" />
     <Compile Include="Rulesets\Beatmaps\BeatmapProcessor.cs" />
     <Compile Include="Beatmaps\Legacy\LegacyBeatmap.cs" />
+    <Compile Include="Beatmaps\Timing\BreakPeriod.cs" />
     <Compile Include="Beatmaps\Timing\TimeSignatures.cs" />
     <Compile Include="Beatmaps\Timing\TimingInfo.cs" />
     <Compile Include="Database\BeatmapMetrics.cs" />