DOTween cancellation token not immediate

[Atlinx]

I've noticed that whenever I wanted to cancel a tween immediately, I'd have to wait until the end of the frame for the tween to stop. Is it possible to kill the tween immediately, so my cancel logic can become synchronous instead of asynchronous?

Ex. (What I'm doing right now)

cancelTween?.Cancel();
cancelTween?.Dispose();
cancelTween = new CancellationTokenSource();
await UniTask.WaitForEndOfFrame(this); // Tween is actually not cancelled yet!
transform.SetParent(canvas.transform, true); // Tween has been cancelled, now we can do what we want with the tweened object

[kandreyc]

this is my workaround

public static async UniTask ToUniTaskWithImmediateCancel(this Tween tween, CancellationToken token)
{
    await using var _ = token.Register(() =>
    {
        if (tween.IsActive())
        {
            tween.Kill();
        }
    }, true);

    await tween.ToUniTask(TweenCancelBehaviour.Kill, token);
}

[neuecc]

Because of Performance (Register has allocations), it is not immediate.
However, I understand the needs, I will try to find a way to implement it efficiently.

[yellowisher]

Another workaround; call tween.onUpdate just after cancel. (quite cumbersome though)

cancelTween.Cancel();
tween.onUpdate(); // Instead of WaitForEndOfFrame
transform.position = Vector3.zero;

Looking forward to neat implementation. 👀

[keenanwoodall]

I'm not sure if this is related, but I am running a chain of sequences and passing this.GetCancellationTokenOnDestroy for the cancellation token. If the game-object is destroyed during the first tween, a cancellation exception doesn't seem to be thrown. You can see IsCancellationRequested is true, but execution continues and I get a MissingReferenceException on the transform.

[neuecc]

use the TweenCancelBehaviour?
default is Kill.
CancelAwait, ***AndCancelAwait are throws OperationCanceledException.

[keenanwoodall]

I see, thanks. I switched to the ToUniTask extension method so I can set the cancel behaviour, tho I would expect WithCancellation to throw an exception by default :P

[github-actions]

This issue is stale because it has been open 90 days with no activity. Remove stale label or comment or this will be closed in 7 days.

[vachh]

mark