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Keep track of "added animations"

RemDust

Hi there, 🙂

Is it possible to access/get a specific "queued" animation ?

For instance : I quickly call AddAnimation methods for 4 animations in a raw, how can I get a reference to animation3 ?
I know that i can "GetCurrent" on trackentry but how can I access the list of queued animations ? :think:

Nate

You can use TrackEntry next.

I worry that you are using your animation state to store application/game state. Ideally your application state is completely separate from your animations and you drive your animations from your application state. It's not a great design to store application state in the AnimationState or Skeleton.

For example, you could look at the character's skeleton and see what weapon attachment it has to determine how much damage to deal, but this is not a great way to do it. It would be better for your application to know what weapon a character has active and to set the attachment as needed.

RemDust

Hello Nate, thank you 🙂

Nate написал
You can use TrackEntry next.

I'm not really sure how I can use this property, if I want to remove the third animation in queue how would I do that ?
I thought the same way there is an AddAnimation there would be a Remove but I just can't find it ^^
Also, isn't it possible to access animations by index in queue timeline ? I can't find a lot of trackEntry methods in the documentation and it seems most of the uses are readonly.

Nate написал
For example, you could look at the character's skeleton and see what weapon attachment it has to determine how much damage to deal, but this is not a great way to do it. It would be better for your application to know what weapon a character has active and to set the attachment as needed.

I know that it sounds bad :S
I don't use it for my player but on enemies where weapons don't really change.
I wanted to try a design with custom AnimationReferenceAsset. I'm using them to assign various attacks animation/actions to my enemy AI. The AI can generate the attacks and combos with this list of assets. This way attacks have different damages modifiers, FX prefab and player pushback force. The core data and damages are tied to the Enemy instance, not to the animAssets.

I realize this is quite animation driven and scary but I have pretty good results so far. All I need is to have clean callbacks and timings regarding my SetAnimation and AddAnimation methods :sweat:

Nate

You can access the third queued animation like getCurrent(0).Next.Next. Note those can be null!

You didn't say you wanted to remove an animation from the queue. next is readonly. You can use setAnimation or Animation clearTrack to clear all the queued animations, but you currently can't remove only one.

RemDust

Nate написал
You can access the third queued animation like getCurrent(0).Next.Next. Note those can be null!

next is readonly. You can use setAnimation or Animation clearTrack to clear all the queued animations, but you currently can't remove only one.

:o Bummer ! This seems like a limitation :think:

The problem with the current Clear methods is they are either immediate either at the very end of the queue... What I need is "Let's forget about the queue and AddEmptyAnim after the current animation instead".
In other words : clear track after the current animation is over.

I'm surprised that there is no implementation for that, I would have think this would be a commun situation.
Do you have any recommendation or should I come up with a workaround with Events ? 🙂
Like a method waiting for the next Complete Event then clear ?

Nate

It's never come up before. If I understand, you have a bunch of animations queued, like A, then B, then C. Then something happens and you want to finish the current animation and then don't do any more. Is that right? You could add a listener to the current track entry and set an empty animation or clear the track when it is finished.

I think it is much more common to want to play some other animation instead of doing the queued animations, like when the character is hit. So you queue A, B, and C. While those a playing the character gets hit so you use setAnimation (or setEmptyAnimation) to mix from the queued animations to a hit animation (or nothing).

It seems a bit odd to want to finish the current animation and not play the rest. of the queued animations If you can explain more about why it makes sense to do that, we can better consider providing an API to do it.

RemDust

Nate написал
I think it is much more common to want to play some other animation instead of doing the queued animations, like when the character is hit. So you queue A, B, and C. While those a playing the character gets hit so you use setAnimation (or setEmptyAnimation) to mix from the queued animations to a hit animation (or nothing).

Because in this case you want the character to be interrupted, he is hit so you don't want him to finish his action 🙂

Nate написал
It seems a bit odd to want to finish the current animation and not play the rest. of the queued animations If you can explain more about why it makes sense to do that, we can better consider providing an API to do it.

Well, here is a quick example :

Player is in Enemy range, so I generate a batch of enemy attacks (sort of a combo if you like) -> AddAnim A,B,C in queue
During these attacks if the player retreats and gets out of range my AI manager detects that and decide it should be time to chase the player
and HERE I don't want the current animation to stop right in the middle. Enemy should finish the current action before deciding to chase player.

This is why I need to be able to react right on the "change AI state" moment and tell the AnimationControler that he will have to clear the queue when this anim is done.

Hopefully this makes more sense now !

Nate

Thanks, it seems reasonable enough. We've added some methods to clear and set the next entry, but this was done in the 3.9-beta branch because 3.8 is frozen, we are only doing high priority bug fixes there at this time.

You could port the changes to 3.8 if you need them now. Otherwise as mentioned you could use a track entry listener. Another option would be to clear the track, then set the same animation that was playing and adjust it to be have the same track time, animation time, animation last, etc. That way it will appear to continue playing the same animation, but without any animations queued after it.

RemDust

Nate написал
Otherwise as mentioned you could use a track entry listener. .

Right now we have this "event firing order" situation going on, so I'm gonna wait.a few days for Harald to run some tests :p

Nate написал
Another option would be to clear the track, then set the same animation that was playing and adjust it to be have the same track time, animation time, animation last, etc. That way it will appear to continue playing the same animation, but without any animations queued after it

Depending on the time it takes to get the correct timing and set the new animation it might work !

I think I'm gonna try the 3.9 methods but I'll keep that solution in mind if I run into issues 🙂
Thank you Nate :yes:

Hello guys,
Sorry for digging up this old thread, I might end up creating a new one but hopefully it will make sense to discuss here. 🙂

I've been away for a while and I'm wondering if I should upgrade my Spine-Unity runtime. Last time we spoke there was no way to specifically access/get/remove the currently queued animations in track. You kinda told me about methods that could provide such a function in 3.9 but haven't been lucky looking around for informations.

So my question is pretty much the same than back in 2020. If I addAnimation A, B and C, today what would be the convenient way to remove animation C from the queue but still wait for A and B to complete ? :think:

Ultimately, it would be amazeballs to be able to get animations in queue by index to manipulate them, like a sort of "timeline"

Thanks again for the great support,
it's good to be back :nerd:

Nate

Get the last track entry you want to keep and call AnimationState clearNext.

TrackEntry a = state.getCurrent(0); 
TrackEntry b = entry.next;
state.clearNext(b);

That will leave a and b.

I don't think this is typical usage though. I don't see why you want to queue a, b, and c, then later mess with the queue. It may be better to play/queue the animations you know you want and only play more animations when you need to. Eg, an enemy is in range so it plays a and b. At some time during b you determine if c should be played (eg if still in range), if so you queue it. This avoids queuing entries and then needing to manipulate the queue.

RemDust

Nate написал
Get the last track entry you want to keep and call AnimationState clearNext.
TrackEntry a = state.getCurrent(0); 
TrackEntry b = entry.next;
state.clearNext(b);
That will leave a and b.

I don't think this is typical usage though. I don't see why you want to queue a, b, and c, then later mess with the queue. It may be better to play/queue the animations you know you want and only play more animations when you need to. Eg, an enemy is in range so it plays a and b. At some time during b you determine if c should be played (eg if still in range), if so you queue it. This avoids queuing entries and then needing to manipulate the queue.

I see why it seems odd, and it might be actually.
I felt it was convenient for me at that time to kinda generate a combo of attacks and evaluate the situation later.
To be fair it was quite long ago and I try to pick up where I left ^^

Anyway thank you for the answer =)
( even if I wish I could iterate through the list with an undefined index instead of a constant addition of Next.Next :grinteeth: )