/// <summary>
/// Updates this tween given a timespan.
/// </summary>
/// <param name="timeSpan">Time to update.</param>
public void Update(TimeSpan timeSpan)
{
var notify = false;
if (!IsComplete)
{
CurrentTime += timeSpan;
_value = MathHelper.Clamp((float)(CurrentTime.TotalMilliseconds / TotalTime.TotalMilliseconds), 0.0f,
1.0f);
for (var index = 0; index < EventListeners.Count; index++)
{
if (!(Value >= EventListeners[index].Time) || EventListeners[index].Fired)
{
continue;
}
EventListeners[index] = new EvenTimer
{
Time = EventListeners[index].Time,
Procedure = EventListeners[index].Procedure,
Fired = true
};
EventListeners[index].Procedure(this);
}
}
else if (Loop)
{
notify = true;
Reset();
_positveDirection = !_positveDirection;
}
else
{
notify = true;
}
if (!notify)
{
return;
}
var remove = new List <Procedure <Tween> >();
foreach (var listener in CompletionListeners)
{
try
{
listener(this);
}
catch
{
remove.Add(listener);
}
}
CompletionListeners.RemoveAll(remove.Contains);
remove.Clear();
}
/// <summary>
/// Resets this tween to it origianal value.
/// </summary>
public void Reset()
{
_value = 0.0f;
CurrentTime = TimeSpan.Zero;
for (var index = 0; index < EventListeners.Count; index++)
{
EventListeners[index] = new EvenTimer
{
Time = EventListeners[index].Time,
Procedure = EventListeners[index].Procedure,
Fired = false
};
}
}
