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osu-lazer/osu.Game/Screens/OnlinePlay/Multiplayer/Participants/ParticipantsList.cs
2022-11-27 00:00:27 +09:00

81 lines
2.8 KiB
C#

// 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.
#nullable disable
using System.Linq;
using JetBrains.Annotations;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Game.Graphics.Containers;
using osuTK;
namespace osu.Game.Screens.OnlinePlay.Multiplayer.Participants
{
public partial class ParticipantsList : MultiplayerRoomComposite
{
private FillFlowContainer<ParticipantPanel> panels;
[CanBeNull]
private ParticipantPanel currentHostPanel;
[BackgroundDependencyLoader]
private void load()
{
InternalChild = new OsuScrollContainer
{
RelativeSizeAxes = Axes.Both,
ScrollbarVisible = false,
Child = panels = new FillFlowContainer<ParticipantPanel>
{
RelativeSizeAxes = Axes.X,
AutoSizeAxes = Axes.Y,
Direction = FillDirection.Vertical,
Spacing = new Vector2(0, 2)
}
};
}
protected override void OnRoomUpdated()
{
base.OnRoomUpdated();
if (Room == null)
panels.Clear();
else
{
// Remove panels for users no longer in the room.
foreach (var p in panels)
{
// 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.
if (Room.Users.All(u => !ReferenceEquals(p.User, u)))
p.Expire();
}
// Add panels for all users new to the room.
foreach (var user in Room.Users.Except(panels.Select(p => p.User)))
panels.Add(new ParticipantPanel(user));
if (currentHostPanel == null || !currentHostPanel.User.Equals(Room.Host))
{
// Reset position of previous host back to normal, if one existing.
if (currentHostPanel != null && panels.Contains(currentHostPanel))
panels.SetLayoutPosition(currentHostPanel, 0);
currentHostPanel = null;
// Change position of new host to display above all participants.
if (Room.Host != null)
{
currentHostPanel = panels.SingleOrDefault(u => u.User.Equals(Room.Host));
if (currentHostPanel != null)
panels.SetLayoutPosition(currentHostPanel, -1);
}
}
}
}
}
}