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Character collision capsule won't follow jump anim.


I'm a noob, so I followed a few tutorials to set up a basic walk/run/jump animations that I downloaded from Mixamo. Now, the default UE4 jump physics are way too high and floaty so I reduced the default 600 jump z velocity to 300 for a more "realistic" result and it's the number that better matches the jump animation I'm using. The problem is that the player capsule collision doesn't match the jump animation, the jump animation leaves the capsule behind.

alt text

As you can see I cannot jump onto obstacles or jump over obstacles.

Any suggestions?, thanks.

Product Version: UE 4.19
jump.png (947.8 kB)
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asked Sep 09 '18 at 03:37 PM in Blueprint Scripting

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avatar image ThompsonN13 Sep 09 '18 at 03:54 PM

the issue with the mesh leaving the capsule is probably due to the animation not being stationary. you will want to enable root motion in the animation so that the root of the character moves based on the animation. in a normal animation the mesh stays in one place while playing the animation and the movement is based on the capsules location. the animation your using is different and you need to base the character location on the animation rather than the opposite way, its actually pretty common and you just need to check a box and it should work.

avatar image js100serch Sep 09 '18 at 07:43 PM

Aparently enabling that root motion check box requires the skeleton to have a root bone, mixamo animations don't have this bone. I've followed a few tutorials on how to add this bone, but I get errors and won't get imported. Is this really that hard?, I mean, it's just a jump animation, I though something this basic would be easier.

I just want my character to jump, that's all. No advanced stuff, just jump on obstacles and over obstacles.

avatar image ThompsonN13 Sep 09 '18 at 10:18 PM

you made it more difficult by using that style of animation. some anims from mixamo also have an option for making the animation stay in place which is how you really want it.

avatar image js100serch Sep 10 '18 at 12:54 AM

This Animation has that check box, but still it has this issue. I've spent the entire day trying different tutorials and a blender addon to convert the skeleton but all I get is errors.

The blender addon has a small tutorial but, 1.- it has no voice, just some kind of Latin Music, 2.- it uses a T pose as an example and once the skeleton is in unreal, whoever was recording the tutorial just started selecting bones in the retargeting window, and I don't know if I have to do this too for a jumping animation.

There's another tutorial where the jump animation has a root bone, directly from the Mixamo site, he just enabled root motion and that's it, so Mixamo used to upload the skeletons with a root bone last year and they decided that, this year all the root bones have to go?.

I'm totally lost.

avatar image ThompsonN13 Sep 10 '18 at 01:27 AM

your mentioning a bunch of things but not linking them so its all pretty much useless to us. ive looked into it a bit but havent gotten it to work (its been awhile since i did anything with root motion). which jump anim are you using exactly? itll be easier to work on if i know the exact one your using.

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im not sure if you found a solution, but I have a trick you could try.

use a node in you character BP its called "Launch Character?" something like that. it will require you to input a velocity.

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answered Dec 10 '18 at 11:26 AM

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