How to fix animation 'Gravity Weight' issue with Root Motion [SOLVED]

Hi everyone,

I've recently found a solution to a problem I was having with root motion animations, where their gravity weight was set to 0 instead of 1 (animator.gravityWeight). This was resulted in the character floating when walking down ramps/stairs.

After some digging around, I managed to find a great solution which I found quite hard to find and isn't well documented, so I thought it would be great to share here if anyone else in the future experiences a similar issue.

As seen in the attached image below, simply go to each of your animations used and add a Curve with the name 'GravityWeight' and set the value to 1, then change the curve to a straight line as shown below.

Press apply and you should be good to go!

 

Thanks for sharing.

 

THANK YOU!!! <3333

 

Thank you! I had been looking everywhere on the internet and this was the solution.

 

Thanks a lot ... but now I have to fix a ton of animation clips ... is there a way to fix it for all at once?

Edit: Nevermind, took me just >40min to do -.- ... ...

 

Thanks!!

 

thank you very much !!! since years i search for a solution for this "bug" thanks again

 

It's two years later, the end of 2018 and I have used this fix to fix my floating enemies that were driven by a NavMeshAgent and an animator root motion (no custom physics movement on my side).

The clips I were using for locomotion didn't have the additional clip options (this is normally fixed by baking Y into pose, but these didn't have that), I'm gonna have to research why do some animation clips have those and some don't.

What I'm curious about, is how did you manage to figure out that naming an animation curve with a specific string will fix this? Seriously, how did you arrive at this solution?

 

Still working, even its almost mid-2019. Best post I have ever come across!

 

love you :v

 

Helped me too. Cheers

 

Thank you soooo much, it was driving me crazy !
(Love Unity and CharacterController, this fixed its only limitation I found)

 

To get this to work with blendtrees see my post: https://forum.unity.com/threads/animator-gravity-weight.651985/

 

thank you so much

 

I know this is years old... But anyone managed to figure this out? Seems like only animations imported from an FBX file have Curves options in their inspector...

 

If you are using imported animations see if setting them as "Humanoid" helps (it's under the rig tab)

If you are using animations generated within unity (they have the file extension .anim) I think you can add the curve directly in the animation (by using the "animation" window). But I never tried it personally. The reason I think it will work is I've seen some of my animations complain about the missing "GravityWeight" curve in my animation files (seen this in the animation window, there was a GravityWeight entry written in yellow like when you delete a transform that was animated but leave its animation curve behind).

Good luck

 

True, I arrived at the same conclusion myself. In the case of .anim files, it's probably the exact same thing adding them directly on the animation window as it is adding them under Curves for imported ones. Difference is though, the animation window doesn't allow adding GravityWeight at all ... Because it's a "Missing poperty" even on an imported animation, you can't even add it on a .anim file .

I've since gave up on this method. I have a feeling it's not the route one should take for jumping so... Thank you for the response!

 

Thank you bro

 

Having a similar occurrence that stemmed from testing out the Timeline feature on one of my sprites.
Not too sure on the specifics of how, but the timeline somehow altered the animation controller so that any sprite using it is no longer affected by gravity. This remained an issue even after removal of the timeline component. The working fix seems to be make a new controller (the animations thankfully seem to be unaffected).

Hope this helps others out there that wound up with levitating sprites after playing around with Timeline.

 

Is there any solution for animations made within Unity, where you can't add a curve or float?

 

Unity 2021 LFS here. If this is not working for you, try baking the transform position Y and then do it. Baking works for me.

 

2022 and this still works! Thanks dude!

 

This is perfect. I think it is related with baking y pose. Thanks.

 

I try this didn't work. So in motion selection select root motion node as <root transform>. Thats works for me.

 

In the Animation import settings, tick the "bake into pose" for "Root Transform position(Y)", then the gravity will work on the model.

For other component settings:

• Animator:
  • apply root motion
  • animate physics
  • update mode => fixed
• Rigidbody
  • use gravity : true
  • is kinematic : false
  • freeze rotation: x y z

 

How can i fix when Animal with 4 legs moving with Navmesh Agent component, Issue is when its moving on ramp link in terrain bumps, its legs front legs or rare legs seems in air, because of NavMesh component, as itsin middle, but i want it to move like all legs should be on ground?