Root Motion - Animation movement or engine movement ?

RemDust

Hi guys, 🙂
I'm not really facing this problem already but I want to think about it before getting stuck...

I understand that most of the cycling animations shouldn't actually move on x axis and get movement from your game engine.
But or more complex and brief actions (maybe some attacks, dodging ) you might want to have a precise animation entirely done in Spine, right ?

So what is your approach with Spine (and Unity runtime), I dig a bit on google and heard about Root Motion... :wonder:

Could you guys provide some advices ?

Thanx ! 🙂

RemDust

BinaryCats

There are non as of yet, but you can do it (we do it) with a little editing of the runtimes. Basically you want to get how much the root has changed between now and last frame, then set the root position back to 0. Then move your character by that amount

RemDust

Ok, that's what I used to do when I was working with sprite sheet, except that it might be trickier to convert the Spine x axis movement in Unity x displacement.

BinaryCats

We do it with less than 10 lines of code

RemDust

Alright then !
And what about colliders and stuff ?
Are they at the wrong place during the motion ? I mean, i used to animate colliders with spritesheet but here i cant use the animation panel.

BinaryCats

We move the root object by how much the root bone move, and set that bones position back to 0 (we don't support root rotation), and mix on the translation timeline for the root is always 1 (if(boneID == 0 ) alpha=1; )

So long as you colliders are a part of the same hierarchy, it should be fine.

RemDust

I think I got it, thank you, Cat fighting Schrodinger's law !