Rotating breaks game, throws error det==0 every frame

Question

No issue translating, but rotating at all breaks the viewport and throws the error "det==0" and "setaxisangle: The axis Vector3 must be normalized." The Vector3 I'm trying to rotate it by is normalized, and all of the scales on everything aren't 0, which I've seen has caused the error before.

Comments

Can you share your code as well?

---

https://github.com/frenchma/Game-stuff.git

This has all the code in the project

---

What happens when you use rotate() instead of rotate_object_local()?

---

the same thing

Answer 1

Hi,
a zero vector normalized does not return a proper normalized vector.

Vector3().normalized returns (0,0,0) ... not of length 1

When you start your code, spin_inertia is a zero vector.

when your code depents on a proper normalized vector better make your own fail safe function

func normalize( vec:Vector3 ):
    var newVec = vec.normalized()
    if newVec.length() < 1:
        newVec  = Vector3.UP #or whatever is your default
    return newVec

Not tested!

Comments

Had the same problem, the above function fixed it

I had:

transform.basis = transform.basis.rotated(Vector3.ZERO, pitchinput * pitchspeed * delta)

changed to:

transform.basis = transform.basis.rotated(normalize(Vector3.ZERO), pitchinput * pitchspeed * delta)

no more errors at runtime, works same as previous line, cheers