forked from ppy/osu-framework
/
TrackVirtual.cs
92 lines (73 loc) · 2.04 KB
/
TrackVirtual.cs
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// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu-framework/master/LICENCE
using osu.Framework.Timing;
using OpenTK;
namespace osu.Framework.Audio.Track
{
public class TrackVirtual : Track
{
private readonly StopwatchClock clock = new StopwatchClock();
private double seekOffset;
public TrackVirtual()
{
Length = double.PositiveInfinity;
}
public override bool Seek(double seek)
{
double current = CurrentTime;
seekOffset = seek;
lock (clock)
{
if (IsRunning)
clock.Restart();
else
clock.Reset();
}
seekOffset = MathHelper.Clamp(seekOffset, 0, Length);
return current != seekOffset;
}
public override void Start()
{
lock (clock) clock.Start();
}
public override void Reset()
{
lock (clock) clock.Reset();
seekOffset = 0;
base.Reset();
}
public override void Stop()
{
lock (clock) clock.Stop();
}
public override bool IsRunning
{
get
{
lock (clock) return clock.IsRunning;
}
}
public override double CurrentTime
{
get
{
lock (clock) return seekOffset + clock.CurrentTime;
}
}
protected override void UpdateState()
{
base.UpdateState();
lock (clock)
{
if (CurrentTime >= Length)
Stop();
}
}
internal override void OnStateChanged()
{
base.OnStateChanged();
lock (clock)
clock.Rate = Tempo;
}
}
}