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

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// 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 osu.Framework.Bindables;
using osu.Framework.Timing;
namespace osu.Game.Screens.Play
{
public class OffsetCorrectionClock : FramedOffsetClock
{
private readonly BindableDouble pauseRateAdjust;
private double offset;
public new double Offset
{
get => offset;
set
{
if (value == offset)
return;
offset = value;
updateOffset();
}
}
public double RateAdjustedOffset => base.Offset;
public OffsetCorrectionClock(IClock source, BindableDouble pauseRateAdjust)
: base(source)
{
this.pauseRateAdjust = pauseRateAdjust;
}
public override void ProcessFrame()
{
base.ProcessFrame();
updateOffset();
}
private void updateOffset()
{
// changing this during the pause transform effect will cause a potentially large offset to be suddenly applied as we approach zero rate.
if (pauseRateAdjust.Value == 1)
{
// we always want to apply the same real-time offset, so it should be adjusted by the difference in playback rate (from realtime) to achieve this.
base.Offset = Offset * Rate;
}
}
}
}