Spine Bounding Boxes not visible in Unreal 4?

neatgames

Hi, loving Spine! Fantastic UI.

I've managed to import a Spine .skel and atlas and all is working great in UE4 including imported event triggers. But the one thing I can't figure out is bounding boxes.

I can't see the bounding boxes in UE4's blueprint preview. Not sure if theres a debug setting for it. So I have no idea if it's actually imported the bounding boxes at all.

Any advice?

neatgames

martoof

Hi,
what do you mean by bounding box? is it a box volume that you create somewhere in spine ?
what do you want to do with it for example ?

neatgames

A Bounding Box is an attachment in Spine that you attach to a bone. It's used for collision detection for certain areas of the character. For example, in this image the head has a green bounding box I've drawn around it.

martoof

Oh ok, don't know Spine can do HitBox, it's interesting.
I test to import my boundingbox : the slot is correctly import and don't know if bounding box is inside.
Bounding box seem to work in all other software, and is nota expose to BP on UE4...
For the moment i create a trigger on UE4 and update his transform each tick...

[UE4] Bounding box not imported · #1771

Answer from github by Mario :

The bounding boxes are loaded, but can not be accessed from blueprints at the moment. They can be fetched from the skeleton component in C++.

Is any C++ dev know if it's already on the roadmap dev ? It's really essential to make a game and sad to not expose this area to BP

neatgames

Thanks for chasing that up Martoof.

Anyone have an example of how to implement this? I'm solely a blueprints dev, I've never touched the C++ side of things, yet.

Mario

The problem with exposing the bounding boxes to BP is that it's hard to do anything with the data inside BP. spine-ue4 also allows you to activate collision detection using the skeleton geometry itself, due to SkeletonRendererComponent being a ProceduralMeshComponent, which can be processed in BP. I'll add an example for that (there's a test, but not a proper example). See this issue: https://github.com/EsotericSoftware/spine-runtimes/issues/1777

neatgames

Thanks Mario, sounds good - an example would help a lot!