Add base for event parsing code.

osu.Game/Beatmaps/Beatmap.cs

@@ -2,6 +2,7 @@
 // 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;
@@ -17,6 +18,7 @@ namespace osu.Game.Beatmaps
     {
         public BeatmapInfo BeatmapInfo;
         public TimingInfo TimingInfo = new TimingInfo();
+        public EventInfo EventInfo = new EventInfo();
         public readonly List<Color4> ComboColors = new List<Color4>
         {
             new Color4(17, 136, 170, 255),
@@ -40,6 +42,7 @@ namespace osu.Game.Beatmaps
         {
             BeatmapInfo = original?.BeatmapInfo ?? BeatmapInfo;
             TimingInfo = original?.TimingInfo ?? TimingInfo;
+            EventInfo = original?.EventInfo ?? EventInfo;
             ComboColors = original?.ComboColors ?? ComboColors;
         }
     }

osu.Game/Beatmaps/Events/BackgroundEvent.cs

@@ -3,14 +3,11 @@
 
 namespace osu.Game.Beatmaps.Events
 {
-    public enum EventType
+    public class BackgroundEvent : Event
     {
-        Background = 0,
-        Video = 1,
-        Break = 2,
-        Colour = 3,
-        Sprite = 4,
-        Sample = 5,
-        Animation = 6
+        /// <summary>
+        /// The file name.
+        /// </summary>
+        public string Filename;
     }
-}
+}

osu.Game/Beatmaps/Events/BreakEvent.cs

@@ -0,0 +1,28 @@
+// 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 BreakEvent : Event
+    {
+        /// <summary>
+        /// The minimum duration required for a break to have any effect.
+        /// </summary>
+        private const double min_break_duration = 650;
+
+        /// <summary>
+        /// The break end time.
+        /// </summary>
+        public double EndTime;
+
+        /// <summary>
+        /// The duration of the break.
+        /// </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.
+        /// </summary>
+        public bool HasEffect => Duration >= min_break_duration;
+    }
+}

osu.Game/Beatmaps/Events/Event.cs

@@ -0,0 +1,13 @@
+// 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

@@ -0,0 +1,26 @@
+// 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);
+    }
+}

osu.Game/Beatmaps/Formats/OsuLegacyDecoder.cs

@@ -204,23 +204,42 @@ namespace osu.Game.Beatmaps.Formats
 
         private void handleEvents(Beatmap beatmap, string val)
         {
-            if (val.StartsWith(@"//"))
-                return;
-            if (val.StartsWith(@" "))
-                return; // TODO
             string[] split = val.Split(',');
+
             EventType type;
-            int intType;
-            if (!int.TryParse(split[0], out intType))
+            if (!Enum.TryParse(split[0], out type))
+                throw new InvalidDataException($@"Unknown event type {split[0]}");
+
+            // Todo: Implement the rest
+            switch (type)
             {
-                if (!Enum.TryParse(split[0], out type))
-                    throw new InvalidDataException($@"Unknown event type {split[0]}");
+                case EventType.Video:
+                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
+                    {
+                        StartTime = double.Parse(split[1], NumberFormatInfo.InvariantInfo),
+                        EndTime = double.Parse(split[2], NumberFormatInfo.InvariantInfo)
+                    };
+
+                    if (!breakEvent.HasEffect)
+                        return;
+
+                    beatmap.EventInfo.Breaks.Add(breakEvent);
+                    break;
             }
-            else
-                type = (EventType)intType;
-            // TODO: Parse and store the rest of the event
-            if (type == EventType.Background)
-                beatmap.BeatmapInfo.Metadata.BackgroundFile = split[2].Trim('"');
         }
 
         private void handleTimingPoints(Beatmap beatmap, string val)
@@ -330,6 +349,9 @@ namespace osu.Game.Beatmaps.Formats
                 if (string.IsNullOrEmpty(line))
                     continue;
 
+                if (line.StartsWith(" ") || line.StartsWith("_") || line.StartsWith("//"))
+                    continue;
+
                 if (line.StartsWith(@"osu file format v"))
                 {
                     beatmap.BeatmapInfo.BeatmapVersion = int.Parse(line.Substring(17));
@@ -390,5 +412,16 @@ namespace osu.Game.Beatmaps.Formats
             Soft = 2,
             Drum = 3
         }
+
+        internal enum EventType
+        {
+            Background = 0,
+            Video = 1,
+            Break = 2,
+            Colour = 3,
+            Sprite = 4,
+            Sample = 5,
+            Animation = 6
+        }
     }
 }

osu.Game/osu.Game.csproj

@@ -74,6 +74,10 @@
     <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" />
@@ -342,7 +346,6 @@
     <Compile Include="Beatmaps\Formats\BeatmapDecoder.cs" />
     <Compile Include="Beatmaps\Formats\OsuLegacyDecoder.cs" />
     <Compile Include="Beatmaps\IO\OszArchiveReader.cs" />
-    <Compile Include="Beatmaps\Events\EventType.cs" />
     <Compile Include="Graphics\UserInterface\Volume\VolumeMeter.cs" />
     <Compile Include="Database\BeatmapSetInfo.cs" />
     <Compile Include="Database\BeatmapMetadata.cs" />