For Rigidbody Sphere Roll -- What is the right choice ?

Unity Engine
1

There is a scene contains a sphere, this sphere can roll with WSAD keys with the following attached code, I want every frame measure the speed of Sphere Rolling …

private var _GameManager : GameObject;
var movement 			 : Vector3;
var moveSpeed 			 : float 		 = 6.0f;
var drag 				 : float 		 = 2;
	
function Start()
{
//	_GameManager = GameObject.Find("_GameManager");
}

function Update () 
{	
	var forward : Vector3 = Camera.main.transform.TransformDirection(Vector3.forward);
	forward.y = 0;
	forward = forward.normalized;
	
	var forwardForce : Vector3 = forward * Input.GetAxis("Vertical") * moveSpeed;
	rigidbody.AddForce(forwardForce);
	
	var right   : Vector3 = Camera.main.transform.TransformDirection(Vector3.right);
	right.y = 0;
	right = right.normalized;

	var rightForce : Vector3 = right * Input.GetAxis("Horizontal") * moveSpeed;
	rigidbody.AddForce(rightForce);
	
}

Again: what is the right choice ? :roll_eyes: angularVelocity.magnitude OR velocity.magnitude I hope know the difference

2

Angular velocity is how fast an object is spinning about its centre of mass. Velocity, usually called linear velocity, is how fast an objects centre of mass is moving from one point to another. If you want something like a car’s speedometer that would be linear velocity.