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osu-lazer/osu.Game/Online/Multiplayer/ServerShutdownNotification.cs
2022-11-27 00:00:27 +09:00

63 lines
2.2 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.
using System;
using Humanizer.Localisation;
using osu.Framework.Allocation;
using osu.Framework.Threading;
using osu.Game.Overlays.Notifications;
using osu.Game.Utils;
namespace osu.Game.Online.Multiplayer
{
public partial class ServerShutdownNotification : SimpleNotification
{
private readonly DateTimeOffset endDate;
private ScheduledDelegate? updateDelegate;
public ServerShutdownNotification(TimeSpan duration)
{
endDate = DateTimeOffset.UtcNow + duration;
}
[BackgroundDependencyLoader]
private void load()
{
updateTime();
}
protected override void LoadComplete()
{
base.LoadComplete();
updateDelegate = Scheduler.Add(updateTimeWithReschedule);
}
private void updateTimeWithReschedule()
{
updateTime();
// The remaining time on a countdown may be at a fractional portion between two seconds.
// We want to align certain audio/visual cues to the point at which integer seconds change.
// To do so, we schedule to the next whole second. Note that scheduler invocation isn't
// guaranteed to be accurate, so this may still occur slightly late, but even in such a case
// the next invocation will be roughly correct.
double timeToNextSecond = endDate.Subtract(DateTimeOffset.UtcNow).TotalMilliseconds % 1000;
updateDelegate = Scheduler.AddDelayed(updateTimeWithReschedule, timeToNextSecond);
}
private void updateTime()
{
TimeSpan remaining = endDate.Subtract(DateTimeOffset.Now);
if (remaining.TotalSeconds <= 5)
{
updateDelegate?.Cancel();
Text = "The multiplayer server will be right back...";
}
else
Text = $"The multiplayer server is restarting in {HumanizerUtils.Humanize(remaining, precision: 3, minUnit: TimeUnit.Second)}.";
}
}
}