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osu-lazer/osu.Game/Screens/Play/GameplayClock.cs
2022-06-17 16:37:17 +09:00

80 lines
2.5 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.Collections.Generic;
using System.Linq;
using osu.Framework.Bindables;
using osu.Framework.Timing;
using osu.Framework.Utils;
namespace osu.Game.Screens.Play
{
/// <summary>
/// A clock which is used for gameplay elements that need to follow audio time 1:1.
/// Exposed via DI by <see cref="GameplayClockContainer"/>.
/// <remarks>
/// The main purpose of this clock is to stop components using it from accidentally processing the main
/// <see cref="IFrameBasedClock"/>, as this should only be done once to ensure accuracy.
/// </remarks>
/// </summary>
public class GameplayClock : IFrameBasedClock
{
internal readonly IFrameBasedClock UnderlyingClock;
public readonly BindableBool IsPaused = new BindableBool();
/// <summary>
/// All adjustments applied to this clock which don't come from gameplay or mods.
/// </summary>
public virtual IEnumerable<Bindable<double>> NonGameplayAdjustments => Enumerable.Empty<Bindable<double>>();
public GameplayClock(IFrameBasedClock underlyingClock)
{
UnderlyingClock = underlyingClock;
}
public double CurrentTime => UnderlyingClock.CurrentTime;
public double Rate => UnderlyingClock.Rate;
/// <summary>
/// The rate of gameplay when playback is at 100%.
/// This excludes any seeking / user adjustments.
/// </summary>
public double TrueGameplayRate
{
get
{
double baseRate = Rate;
foreach (var adjustment in NonGameplayAdjustments)
{
if (Precision.AlmostEquals(adjustment.Value, 0))
return 0;
baseRate /= adjustment.Value;
}
return baseRate;
}
}
public bool IsRunning => UnderlyingClock.IsRunning;
public void ProcessFrame()
{
// intentionally not updating the underlying clock (handled externally).
}
public double ElapsedFrameTime => UnderlyingClock.ElapsedFrameTime;
public double FramesPerSecond => UnderlyingClock.FramesPerSecond;
public FrameTimeInfo TimeInfo => UnderlyingClock.TimeInfo;
public IClock Source => UnderlyingClock;
}
}