Trouble getting public variables

Unity Engine
1

Hi,

In my 2D Marbler, I want to show the current velocity of the marble in the GUI.

This is what I have got for my guiText:

function Update () {
guiText.text = averageVelocity;

This is what I am using to find the velocity of the marble (copied from this post):

var averageVelocity : Vector3;
private var lastPosition : Vector3 = Vector3.zero;

function FixedUpdate () {
   averageVelocity = (transform.position - lastPosition)/Time.fixedDeltaTime;
   lastPosition = transform.position;
}

Note: The marble is a rigidbody.

I have spent a few hours now trying to figuire out what I have to do to fix it but I haven’t really gotten anywhere on my own. I am going to avoid asking for help on these types of basics in the future but I am completely stuck at the moment.

2

If the marble is a rigidbody, you can get the vector velocity from rigidbody.velocity. If you want the speed in the direction of motion (ie, a number rather than a vector), you can use Vector3.magnitude to get the velocity vector’s length.