[Unity] Animation is flickering.

cloudcamaleoniv

Hello, so, I THINK I've found a nasty bug...

I've done a plant monster moving inside Spine App, This Plant is the third boss of my game, but it's the first one I've done with the edit mesh feature.

How my game works? When the player enters a new level, everything, including the Boss is loaded, but the Boss's gameObject.activeSelf is set to false as soon as he is created. When the player gets to the Boss Room, the Boss's gameObject.activeSelf is set to true.

This worked nice with the other bosses, but with this one, when I ENABLE the gameObject, it starts flickering like hell (one frame is visible, another one is invisible, and so on).

But (this part is important) the object ONLY FLICKERS when, as soon as I instantiate it, I make it invisible (copy.SetActive(false)) and I ACTIVATE it back THROUGH CODE (if press some key -> copy.SetActive(true)). If I activate it back with the inspector, this strange behaviour does not happen.

Another thing to consider. It only flickers when the object is above a given y position. Yeah, strange.

I've made two examples. One using the tk2d official runtime and the other using the unity official runtimes

The attachment is _5Mb, I ask you to download it here:
http://www.filemail.com/d/nzpjooawvwnstkv

I've also created a readme.txt inside the file. Please read it for instructions in how to activate the bug.

Thanks.

Pharan

Can you make the camera zoom out and see if it still happens?

cloudcamaleoniv

Oh yes, this was one of the tests I've made. If I zoom out, it stops, but when I move the animation up the y-axis a little bit, it happens again. Zoom out a little more, stops, increase the y position happens again, and so on.

Thanks for the fast answer.

Pharan

In Spine editor, does your character change drastically in size or move significantly away from the (0, 0) origin point?
(I'm still not sure what could be causing this. I have a hunch it's the mesh bounds not being updated but that theoretically shouldn't be the problem, based on what the Unity docs say.)

cloudcamaleoniv

So, the GameObjects of the examples I've sent are not moving neither changing its scale.

It's just characters standing still in a certain position, and when I move the camera, it starts flickering.

In fact, it only flickers when the conditions I've stated are met. You instantiate the character throught a prefab reference and right at the next line you make the gameObject inactive, and then activate it back throught code in a later instance (if activated back throught the inspector, the bug does not happen). It's a very strange behaviour.

Pharan

Not the GameObjects. I'm asking about in the Spine editor. The Spine program where you make the animations.

Anyway, I'm really not sure what's causing this. Sorry.
Just to test, you could try adding mesh.RecalculateBounds(); at the very end of SkeletonRenderer's LateUpdate(). But I don't think that'll fix it.
Sorry, I haven't seen your program. I'm on a really slow connection right now.

cloudcamaleoniv

Oh god.............. it worked! What the hell, man?

Anyway, no, inside the Spine Editor, the movements are kinda basic. No scaling and not moving too much away the (0, 0) origin. The only thing that is a little higher than normal is the Bone Count - 32 bones.

Anyway, this solution, temporary or not, it worked! Thanks a lot!

Pharan

Damn, I'm good. 8)

😃

Nate

Eh so we need mesh.RecalculateBounds() even though the Unity docs explicitly say that setting triangles is sufficient to recalculate the bounds? Is Unity an indie startup with a single coder or..? :rofl: I guess setting submesh triangles doesn't trigger the recalculation.