How to know when a Level Sequence has finished playing?

Development Cinematics & Media
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1

Is there a “Finished” event for a Level Sequence? Or do I have to check IsPlaying every tick? Or even add a custom track event at the end of each sequence?

Matinee used to have a “Finished” pin on its blueprint controller, but there is no such thing for a sequence.

Thanks.

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2

There isn’t a “Finished” event. That looks to be an oversight. I’ve added jira UETOOL-899 and we’ll try to get it into the next release. Thanks for pointing it out.

3

Has this been resolved in 4.12? I am trying to trigger something off the end of a Sequence playing, and was also looking for the equivalent of the Matinee Controller’s Finished pin.

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4

For now I get the sequence length in blueprint and fire an event after a delay with that amount of time. Hacky, but it works.

5

Hey! I made it like this, hope can help you :slight_smile:

6

You can add a custom event at the end of level sequence.

That event will be triggerred once it has come to end.

7

Nice workaround Roel

8

LevelSequencePlayer has an OnStop event that you can bind to. It’s exposed in C++ and BP.

The documentation:

Event triggered when the level sequence player is stopped

That event fires when your sequence finishes playing.

(There’s also ones for Play and Pause.)

6 Likes
9

Yes, this has been added in 4.14 and is now the proper way to do it.

10

Hi, thanks for your help. But when I looking for code. there is no OnFinish event in engine code. Am I missing? can you describe more?

11

How can I listen?

12

It’s not an “event” per se, you don’t have to listen to it. You just enter its name and create a custom event in the level blueprint with the same name.

13

Thx! It helped me a lot!

14

In their infinite wisdom Epic got rid of this functionality.

15

Yeah OnEndPlay really barely ever works, if it works at all.

Had to create a timeline and watch the IsPlaying property and then move on from the sequence once that hits false.

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16

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Hi. This is working for me. Leaving it here just in case.

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17

Here’s my solution using coroutines. I needed a way to find out when a looping level sequence has reached the end of the timeline, and unfortunately the OnFinished and OnStop delegates don’t fire if the sequence is looping.

UE5Coro::TCoroutine<> USequencerTask::StartSequenceTimer()
{
	// ensure the delegate never fires more than once per loop
	bool bHasBroadcast = false;
	
	while (IsValid(SequencePlayer) && SequencePlayer->IsPlaying())
	{
		const float CurrentTime = SequencePlayer->GetCurrentTime().AsSeconds();
		const float EndTime = SequencePlayer->GetEndTime().AsSeconds();

		if (bHasBroadcast && CurrentTime <= 0.1)
		{
			bHasBroadcast = false;
		}
		
		if (!bHasBroadcast && CurrentTime >= EndTime - 0.1f)
		{
			OnSequencePlayerLoop.Broadcast();
			bHasBroadcast = true;
		}

		co_await UE5Coro::Latent::NextTick();
	}
	co_return;
}