From baf16cfbc3a30082996acb9bde002b58ff815105 Mon Sep 17 00:00:00 2001
From: Dean Herbert <pe@ppy.sh>
Date: Tue, 8 Dec 2020 14:33:38 +0900
Subject: [PATCH] Add room settings related model and event flow

---
 .../RealtimeMultiplayer/ISpectatorClient.cs   |  6 +++++
 .../RealtimeMultiplayer/MultiplayerRoom.cs    |  2 ++
 .../MultiplayerRoomSettings.cs                | 25 +++++++++++++++++++
 3 files changed, 33 insertions(+)
 create mode 100644 osu.Game/Online/RealtimeMultiplayer/MultiplayerRoomSettings.cs

diff --git a/osu.Game/Online/RealtimeMultiplayer/ISpectatorClient.cs b/osu.Game/Online/RealtimeMultiplayer/ISpectatorClient.cs
index d5f6baad43..1e6832e728 100644
--- a/osu.Game/Online/RealtimeMultiplayer/ISpectatorClient.cs
+++ b/osu.Game/Online/RealtimeMultiplayer/ISpectatorClient.cs
@@ -27,5 +27,11 @@ namespace osu.Game.Online.RealtimeMultiplayer
         /// </summary>
         /// <param name="user">The user.</param>
         Task UserLeft(MultiplayerRoomUser user);
+
+        /// <summary>
+        /// Signals that the settings for this room have changed.
+        /// </summary>
+        /// <param name="newSettings">The updated room settings.</param>
+        Task SettingsChanged(MultiplayerRoomSettings newSettings);
     }
 }
diff --git a/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoom.cs b/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoom.cs
index db3993255a..61320b9d73 100644
--- a/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoom.cs
+++ b/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoom.cs
@@ -15,6 +15,8 @@ namespace osu.Game.Online.RealtimeMultiplayer
 
         public MultiplayerRoomState State { get; set; }
 
+        public MultiplayerRoomSettings Settings { get; set; }
+
         private List<MultiplayerRoomUser> users = new List<MultiplayerRoomUser>();
 
         public IReadOnlyList<MultiplayerRoomUser> Users
diff --git a/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoomSettings.cs b/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoomSettings.cs
new file mode 100644
index 0000000000..4c2c014cd9
--- /dev/null
+++ b/osu.Game/Online/RealtimeMultiplayer/MultiplayerRoomSettings.cs
@@ -0,0 +1,25 @@
+// 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 System;
+using System.Collections.Generic;
+using System.Linq;
+using JetBrains.Annotations;
+using osu.Game.Online.API;
+
+namespace osu.Game.Online.RealtimeMultiplayer
+{
+    public class MultiplayerRoomSettings : IEquatable<MultiplayerRoomSettings>
+    {
+        public int? BeatmapID { get; set; }
+
+        public int? RulesetID { get; set; }
+
+        [NotNull]
+        public IEnumerable<APIMod> Mods { get; set; } = Enumerable.Empty<APIMod>();
+
+        public bool Equals(MultiplayerRoomSettings other) => BeatmapID == other?.BeatmapID && Mods.SequenceEqual(other?.Mods) && RulesetID == other?.RulesetID;
+
+        public override string ToString() => $"Beatmap:{BeatmapID} Mods:{string.Join(',', Mods)} Ruleset:{RulesetID}";
+    }
+}