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Question by LtStudley · Dec 29, 2018 at 04:59 AM · unity 5physicsrigidbodycharactercontrollerroot motion

Strange Quadruped Root Motion and Rigidbody Physics

Hello all,

Before I get to my question, I would like to say that I have tried tirelessly to solve this using resources already available for about two days. I have done countless google searches, and I have not been able to solve it. So to whomever is able to help, thank you in advance.

I have a quadrupedal character (a wolf) for which I am having a lot of trouble applying physics to. The problem is that no matter what I use, a character controller or rigidbody, I am unable to satisfy all of the required criteria. Here is what I am trying to satisfy:

- The player must be quadrupedal
- The player should align to whatever surface it is touching (like any rigidbody)
- The player should be able to interact with other objects
- The player should be affected by gravity
- (bonus, optional) The feet of the player should be grounded on bumpy terrain (wanted, but not the main point of this post)


I have tried with character controllers and rigidbodies to accomplish this, each having their own downfalls.

Character Controller:
- Does not fit the shape of the model whatsoever, as it is not a human.
- Does not align itself to the surface it is grounded on


Rigidbody:
- Physics are wonky


I believe the rigidbody is the desired solution. However, as previously stated, the physics are not working as they should (roughly half of the time). When I lock the x- and z-rotations on the rigidbody, movement and gravity work fine, but the player does not align to slopes. When I unlock them, the results shown in the video below are what happen.

I have messed around with settings in the rigidbody, animator, animation root motion, etc. I have done this many times for human characters, but for this model, it just will not work.

Once again, I truly appreciate any help that will be offered. Thank you in advance. :)

Video: https://youtu.be/gKEmHLMBuJk

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