Add playlist support to match song select

osu.Game.Tests/Visual/Multiplayer/TestSceneMatchSongSelect.cs

@@ -3,9 +3,19 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
 using NUnit.Framework;
 using osu.Framework.Allocation;
+using osu.Framework.Audio;
+using osu.Framework.Extensions;
+using osu.Framework.Platform;
+using osu.Framework.Screens;
+using osu.Framework.Utils;
 using osu.Game.Beatmaps;
+using osu.Game.Rulesets;
+using osu.Game.Rulesets.Osu;
 using osu.Game.Screens.Multi.Components;
 using osu.Game.Screens.Select;
 
@@ -22,6 +32,72 @@ namespace osu.Game.Tests.Visual.Multiplayer
         [Resolved]
         private BeatmapManager beatmapManager { get; set; }
 
+        private BeatmapManager manager;
+
+        private RulesetStore rulesets;
+
+        private TestMatchSongSelect songSelect;
+
+        [BackgroundDependencyLoader]
+        private void load(GameHost host, AudioManager audio)
+        {
+            Dependencies.Cache(rulesets = new RulesetStore(ContextFactory));
+            Dependencies.Cache(manager = new BeatmapManager(LocalStorage, ContextFactory, rulesets, null, audio, host, Beatmap.Default));
+
+            var beatmaps = new List<BeatmapInfo>();
+
+            for (int i = 0; i < 6; i++)
+            {
+                int beatmapId = 10 * 10 + i;
+
+                int length = RNG.Next(30000, 200000);
+                double bpm = RNG.NextSingle(80, 200);
+
+                beatmaps.Add(new BeatmapInfo
+                {
+                    Ruleset = new OsuRuleset().RulesetInfo,
+                    OnlineBeatmapID = beatmapId,
+                    Path = "normal.osu",
+                    Version = $"{beatmapId} (length {TimeSpan.FromMilliseconds(length):m\\:ss}, bpm {bpm:0.#})",
+                    Length = length,
+                    BPM = bpm,
+                    BaseDifficulty = new BeatmapDifficulty
+                    {
+                        OverallDifficulty = 3.5f,
+                    },
+                });
+            }
+
+            manager.Import(new BeatmapSetInfo
+            {
+                OnlineBeatmapSetID = 10,
+                Hash = new MemoryStream(Encoding.UTF8.GetBytes(Guid.NewGuid().ToString())).ComputeMD5Hash(),
+                Metadata = new BeatmapMetadata
+                {
+                    // Create random metadata, then we can check if sorting works based on these
+                    Artist = "Some Artist " + RNG.Next(0, 9),
+                    Title = $"Some Song (set id 10), max bpm {beatmaps.Max(b => b.BPM):0.#})",
+                    AuthorString = "Some Guy " + RNG.Next(0, 9),
+                },
+                Beatmaps = beatmaps,
+                DateAdded = DateTimeOffset.UtcNow,
+            }).Wait();
+        }
+
+        public override void SetUpSteps()
+        {
+            base.SetUpSteps();
+
+            AddStep("reset", () =>
+            {
+                Ruleset.Value = new OsuRuleset().RulesetInfo;
+                Beatmap.SetDefault();
+            });
+
+            AddStep("create song select", () => LoadScreen(songSelect = new TestMatchSongSelect()));
+            AddUntilStep("wait for present", () => songSelect.IsCurrentScreen());
+        }
+
         [SetUp]
         public void Setup() => Schedule(() =>
         {
@@ -29,9 +105,30 @@ namespace osu.Game.Tests.Visual.Multiplayer
         });
 
         [Test]
-        public void TestLoadSongSelect()
+        public void TestItemAddedIfEmptyOnStart()
         {
-            AddStep("create song select", () => LoadScreen(new MatchSongSelect()));
+            AddStep("finalise selection", () => songSelect.FinaliseSelection());
+            AddAssert("playlist has 1 item", () => Room.Playlist.Count == 1);
+        }
+
+        [Test]
+        public void TestItemAddedWhenCreateNewItemClicked()
+        {
+            AddStep("create new item", () => songSelect.BeatmapDetails.CreateNewItem());
+            AddAssert("playlist has 1 item", () => Room.Playlist.Count == 1);
+        }
+
+        [Test]
+        public void TestItemNotAddedIfExistingOnStart()
+        {
+            AddStep("create new item", () => songSelect.BeatmapDetails.CreateNewItem());
+            AddStep("finalise selection", () => songSelect.FinaliseSelection());
+            AddAssert("playlist has 1 item", () => Room.Playlist.Count == 1);
+        }
+
+        private class TestMatchSongSelect : MatchSongSelect
+        {
+            public new MatchBeatmapDetailArea BeatmapDetails => (MatchBeatmapDetailArea)base.BeatmapDetails;
         }
     }
 }

osu.Game/Screens/Select/MatchSongSelect.cs

@@ -2,7 +2,6 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
-using System.Linq;
 using Humanizer;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
@@ -10,7 +9,6 @@ using osu.Framework.Graphics;
 using osu.Framework.Screens;
 using osu.Game.Beatmaps;
 using osu.Game.Online.Multiplayer;
-using osu.Game.Rulesets.Mods;
 using osu.Game.Screens.Multi;
 using osu.Game.Screens.Multi.Components;
 
@@ -36,42 +34,32 @@ namespace osu.Game.Screens.Select
             Padding = new MarginPadding { Horizontal = HORIZONTAL_OVERFLOW_PADDING };
         }
 
-        protected override BeatmapDetailArea CreateBeatmapDetailArea() => new MatchBeatmapDetailArea();
+        protected override BeatmapDetailArea CreateBeatmapDetailArea() => new MatchBeatmapDetailArea
+        {
+            CreateNewItem = createNewItem
+        };
 
         protected override bool OnStart()
         {
-            var item = new PlaylistItem
+            if (Playlist.Count == 0)
-            {
+                createNewItem();
-                Beatmap = { Value = Beatmap.Value.BeatmapInfo },
-                Ruleset = { Value = Ruleset.Value },
-                RulesetID = Ruleset.Value.ID ?? 0
-            };
 
-            item.RequiredMods.AddRange(Mods.Value);
+            this.Exit();
-
-            Selected?.Invoke(item);
-
-            if (this.IsCurrentScreen())
-                this.Exit();
 
             return true;
         }
 
-        public override bool OnExiting(IScreen next)
+        private void createNewItem()
         {
-            if (base.OnExiting(next))
+            PlaylistItem item = new PlaylistItem
-                return true;
-
-            var firstItem = Playlist.FirstOrDefault();
-
-            if (firstItem != null)
             {
-                Ruleset.Value = firstItem.Ruleset.Value;
+                Beatmap = { Value = Beatmap.Value.BeatmapInfo },
-                Beatmap.Value = beatmaps.GetWorkingBeatmap(firstItem.Beatmap.Value);
+                Ruleset = { Value = Ruleset.Value }
-                Mods.Value = firstItem.RequiredMods?.ToArray() ?? Array.Empty<Mod>();
+            };
-            }
 
-            return false;
+            item.RequiredMods.AddRange(Mods.Value);
+
+            Playlist.Add(item);
         }
     }
 }