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osu-lazer/osu.Game/Screens/Play/PauseContainer.cs

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// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Linq;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Input;
using osu.Framework.Timing;
using osu.Game.Graphics;
using OpenTK.Graphics;
using OpenTK.Input;
namespace osu.Game.Screens.Play
{
/// <summary>
/// A container which handles pausing children, displaying a pause overlay with choices etc.
/// This alleviates a lot of the intricate pause logic from being in <see cref="Player"/>
/// </summary>
public class PauseContainer : Container
{
public bool IsPaused { get; private set; }
public bool AllowExit => IsPaused && pauseOverlay.Alpha == 1;
public Func<bool> CheckCanPause;
private const double pause_cooldown = 1000;
private double lastPauseActionTime;
private readonly PauseOverlay pauseOverlay;
private readonly Container content;
protected override Container<Drawable> Content => content;
public int Retries { set { pauseOverlay.Retries = value; } }
public bool CanPause => (CheckCanPause?.Invoke() ?? true) && Time.Current >= lastPauseActionTime + pause_cooldown;
public Action OnRetry;
public Action OnQuit;
public Action OnResume;
public Action OnPause;
public IAdjustableClock AudioClock;
public FramedClock FramedClock;
public PauseContainer()
{
RelativeSizeAxes = Axes.Both;
AddInternal(content = new Container { RelativeSizeAxes = Axes.Both });
AddInternal(pauseOverlay = new PauseOverlay
{
OnResume = () => this.Delay(400).Schedule(Resume),
OnRetry = () => OnRetry(),
OnQuit = () => OnQuit(),
});
}
public void Pause(bool force = false)
{
if (!CanPause && !force) return;
if (IsPaused) return;
// stop the decoupled clock (stops the audio eventually)
AudioClock.Stop();
// stop processing updatess on the offset clock (instantly freezes time for all our components)
FramedClock.ProcessSourceClockFrames = false;
IsPaused = true;
// we need to do a final check after all of our children have processed up to the paused clock time.
// this is to cover cases where, for instance, the player fails in the current processing frame.
Schedule(() =>
{
if (!CanPause) return;
lastPauseActionTime = Time.Current;
OnPause?.Invoke();
pauseOverlay.Show();
});
}
public void Resume()
{
if (!IsPaused) return;
IsPaused = false;
FramedClock.ProcessSourceClockFrames = true;
lastPauseActionTime = Time.Current;
OnResume?.Invoke();
pauseOverlay.Hide();
AudioClock.Start();
}
private OsuGameBase game;
[BackgroundDependencyLoader]
private void load(OsuGameBase game)
{
this.game = game;
}
protected override void Update()
{
// eagerly pause when we lose window focus (if we are locally playing).
if (!game.IsActive && CanPause)
Pause();
base.Update();
}
public class PauseOverlay : MenuOverlay
{
public Action OnResume;
public override string Header => "paused";
public override string Description => "you're not going to do what i think you're going to do, are ya?";
protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
{
if (!args.Repeat && args.Key == Key.Escape)
{
Buttons.Children.First().TriggerOnClick();
return true;
}
return base.OnKeyDown(state, args);
}
[BackgroundDependencyLoader]
private void load(OsuColour colours)
{
AddButton("Continue", colours.Green, OnResume);
AddButton("Retry", colours.YellowDark, OnRetry);
AddButton("Quit", new Color4(170, 27, 39, 255), OnQuit);
}
}
}
}