Confused about lookAt

[slice3984]

I’m getting confused about how lookAt works, I would assume it attempts to match up the local forward vector in world space with the local forward vector in world space of my second object.

But taking a look in my scene the local coordinate system of every tile matches world space axis, attempting to do my own smoother rotation with:

            while (time < 1f)
            {
                transform.position = Vector3.Lerp(startPos, endPos, time);
                transform.forward = Vector3.Slerp(fwdVec, waypoint.transform.forward, time);
                time += Time.deltaTime * _speed;

                yield return new WaitForEndOfFrame();
            }

Didn’t give me the desired result and didn’t rotate my object at all, which is obvious when all local coordinate systems of every object match up with world space.

[bixarrio]

No. LookAt points the object towards the passed in position. That is, it rotates it so that the forward vector points at the target

Unity - Scripting API: Transform.LookAt

If you want to do it smoothly, you can calculate the vector from this object to the target

Vector3 targetDirection = (target.transform.position - transform.position).normalized;

Then Slerp from start forward to target direction

Vector3 startForward = transform.forward;
transform.forward = Vector3.Slerp(startForward, targetDirection, time);