Add deep cloning support to Score/ScoreInfo/Replay

osu.Game.Tests/NonVisual/ScoreInfoTest.cs

@@ -0,0 +1,33 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using NUnit.Framework;
+using osu.Game.Rulesets.Scoring;
+using osu.Game.Scoring;
+
+namespace osu.Game.Tests.NonVisual
+{
+    [TestFixture]
+    public class ScoreInfoTest
+    {
+        [Test]
+        public void TestDeepClone()
+        {
+            var score = new ScoreInfo();
+
+            score.Statistics.Add(HitResult.Good, 10);
+            score.Rank = ScoreRank.B;
+
+            var scoreCopy = score.DeepClone();
+
+            score.Statistics[HitResult.Good]++;
+            score.Rank = ScoreRank.X;
+
+            Assert.That(scoreCopy.Statistics[HitResult.Good], Is.EqualTo(10));
+            Assert.That(score.Statistics[HitResult.Good], Is.EqualTo(11));
+
+            Assert.That(scoreCopy.Rank, Is.EqualTo(ScoreRank.B));
+            Assert.That(score.Rank, Is.EqualTo(ScoreRank.X));
+        }
+    }
+}

osu.Game/Replays/Replay.cs

@@ -2,11 +2,13 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System.Collections.Generic;
+using System.Linq;
 using osu.Game.Rulesets.Replays;
+using osu.Game.Utils;
 
 namespace osu.Game.Replays
 {
-    public class Replay
+    public class Replay : IDeepCloneable<Replay>
     {
         /// <summary>
         /// Whether all frames for this replay have been received.
@@ -15,5 +17,15 @@ namespace osu.Game.Replays
         public bool HasReceivedAllFrames = true;
 
         public List<ReplayFrame> Frames = new List<ReplayFrame>();
+
+        public Replay DeepClone()
+        {
+            return new Replay
+            {
+                HasReceivedAllFrames = HasReceivedAllFrames,
+                // individual frames are mutable for now but hopefully this will not be a thing in the future.
+                Frames = Frames.ToList(),
+            };
+        }
     }
 }

osu.Game/Scoring/Score.cs

@@ -2,12 +2,22 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using osu.Game.Replays;
+using osu.Game.Utils;
 
 namespace osu.Game.Scoring
 {
-    public class Score
+    public class Score : IDeepCloneable<Score>
     {
         public ScoreInfo ScoreInfo = new ScoreInfo();
         public Replay Replay = new Replay();
+
+        public Score DeepClone()
+        {
+            return new Score
+            {
+                ScoreInfo = ScoreInfo.DeepClone(),
+                Replay = Replay.DeepClone(),
+            };
+        }
     }
 }

osu.Game/Scoring/ScoreInfo.cs

@@ -18,7 +18,7 @@ using osu.Game.Utils;
 
 namespace osu.Game.Scoring
 {
-    public class ScoreInfo : IHasFiles<ScoreFileInfo>, IHasPrimaryKey, ISoftDelete, IEquatable<ScoreInfo>
+    public class ScoreInfo : IHasFiles<ScoreFileInfo>, IHasPrimaryKey, ISoftDelete, IEquatable<ScoreInfo>, IDeepCloneable<ScoreInfo>
     {
         public int ID { get; set; }
 
@@ -242,6 +242,15 @@ namespace osu.Game.Scoring
             }
         }
 
+        public ScoreInfo DeepClone()
+        {
+            var clone = (ScoreInfo)MemberwiseClone();
+
+            clone.Statistics = new Dictionary<HitResult, int>(clone.Statistics);
+
+            return clone;
+        }
+
         public override string ToString() => $"{User} playing {Beatmap}";
 
         public bool Equals(ScoreInfo other)