Question by RookiKui · Dec 11, 2016 at 05:14 AM · rotation parent child constraints addtorque

Unity 5 - How to addtorque to rigidbody without overriding axis constraints?

So, I'm kinda new to unity and coding and whatever so yeah. Anyway, I'm trying to make a rigidbody rotate with AddTorque, but only on the x axis. So I've got something like this:

 void Movement(float moveRotationX,){
         Vector3 rotation = new Vector3 (moveRotationX, 0.0f, 0.0f);
 
         rb.AddRelativeTorque (rotation * rotationSpeed * Time.deltaTime,ForceMode.Acceleration);
     }

So, this rigidbody I'm trying to rotate is also a child of another rigidbody, and I want it to follow its parent's y and z axis. So basically, its local rotation for these axis should both be 0. But, for some reason, it doesn't stay at 0. I think it's because, for this to happen, its y and z axis should be constrained/frozen, but the AddTorque overrides this when I try to do so in the inspector.

Idk I'm reaally just guessing here. Anyway, if someone knows a way to fix this, please tell!

Thank you for your attention.

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