Detect if object with Hinge Joint is moving

Questions & Answers
1

I’ve been making sound system for door, which is with hinge joint. Open door sound works, but i can’t make door play looping sound when it is rotating. I’ve tried rigidbody.IsSleeping, but the problem is, that if I drag door a bit and release it (to rotate by itself), script detects that rigidbody is sleeping. I also tried rigidbody.velocity - same results.

So how I can detect if door has ANY rotation in progress?

2

motion is change over time.

void update(){
lastPos;
CurrentPos;

if (CurrentPos == null)
{
 lastPos = transform.position;
 CurrentPos = transform.position;
}

else{
lastPos = CurrentPos;
CurrentPos = transform.position;
}

if (vector3.distance(LastPos,CurrentPos) > mathf.epsilon)
{
object moved;
}

}