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dea7f2308c
If a user leave and then rejoins a multiplayer match while another user is not at the lobby screen, there is a potential the `ParticipantPanel` tracking the user will not correctly be recreated to reference the new instance of the `MultiplayerUser`. This happens because the `OnRoomUpdated` call is scheduled, which means it is not running in the background, coupled with the local logic that relies on `IEquatable(MultiplayerRoomUser)` (which in turn falls back to a UserID comparison). Changing this to a reference comparison is the easiest way to resolve this. Whether we change the `IEquatable` implementation is up for discussion. Closes https://github.com/ppy/osu/issues/15970.
94 lines
3.0 KiB
C#
94 lines
3.0 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System.Linq;
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using osu.Framework.Allocation;
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using osu.Framework.Audio;
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using osu.Framework.Audio.Sample;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Game.Graphics.Containers;
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using osu.Game.Graphics.Cursor;
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using osu.Game.Online.Multiplayer;
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using osuTK;
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namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
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{
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public class ParticipantsList : MultiplayerRoomComposite
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{
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private FillFlowContainer<ParticipantPanel> panels;
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private Sample userJoinSample;
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private Sample userLeftSample;
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private Sample userKickedSample;
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[BackgroundDependencyLoader]
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private void load(AudioManager audio)
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{
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InternalChild = new OsuContextMenuContainer
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{
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RelativeSizeAxes = Axes.Both,
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Child = new OsuScrollContainer
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{
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RelativeSizeAxes = Axes.Both,
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ScrollbarVisible = false,
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Child = panels = new FillFlowContainer<ParticipantPanel>
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{
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RelativeSizeAxes = Axes.X,
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AutoSizeAxes = Axes.Y,
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Direction = FillDirection.Vertical,
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Spacing = new Vector2(0, 2)
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}
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}
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};
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userJoinSample = audio.Samples.Get(@"Multiplayer/player-joined");
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userLeftSample = audio.Samples.Get(@"Multiplayer/player-left");
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userKickedSample = audio.Samples.Get(@"Multiplayer/player-kicked");
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}
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protected override void UserJoined(MultiplayerRoomUser user)
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{
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base.UserJoined(user);
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userJoinSample?.Play();
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}
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protected override void UserLeft(MultiplayerRoomUser user)
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{
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base.UserLeft(user);
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userLeftSample?.Play();
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}
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protected override void UserKicked(MultiplayerRoomUser user)
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{
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base.UserKicked(user);
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userKickedSample?.Play();
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}
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protected override void OnRoomUpdated()
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{
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base.OnRoomUpdated();
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if (Room == null)
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panels.Clear();
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else
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{
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// Remove panels for users no longer in the room.
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foreach (var p in panels)
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{
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// Note that we *must* use reference equality here, as this call is scheduled and a user may have left and joined since it was last run.
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if (Room.Users.All(u => !ReferenceEquals(p.User, u)))
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p.Expire();
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}
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// Add panels for all users new to the room.
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foreach (var user in Room.Users.Except(panels.Select(p => p.User)))
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panels.Add(new ParticipantPanel(user));
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}
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}
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}
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}
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