SmoothDamp not working?

Questions & Answers
1

Hi,

I am moving my object using:
transform.position.z-=0.1;
because it is set to kinematic…
I am trying to make the movement of this object much smoother, searching the WWW I find

So I changed the code from that page to match my preferred z axis, see code below:

var target : Transform;
var smoothTime = 0.3;
var zVelocity = 0.0;
var newPosition : float = Mathf.SmoothDamp(transform.position.z, target.position.z, zVelocity, smoothTime);
transform.position = Vector3(transform.position.x, transform.position.y, newPosition);

I have this in FixedUpdate() …
When running the code I see the exception:
NullReferenceException: Object reference not set to an instance of an object
script+$windtimer$54+$.MoveNext () (at Assets/Standard Assets/Character Controllers/Sources/Scripts/script.js:121)

It is failing on line:
var newPosition : float = Mathf.SmoothDamp(transform.position.z, target.position.z, zVelocity, smoothTime);

Can anyone tell why this is failing?
Or has anyone got some code (or could adapt my code) that might make it easier to smoothly move objects to a new location?

Hmmm, even if I use the unedited code from that Unity reference it give the same error?!

many thanks in advance,
Kim

2

Well, considering that null ref is in line

var newPosition : float = Mathf.SmoothDamp(transform.position.z, target.position.z, zVelocity, smoothTime);

and you’re running your script on gameObject, the only thing that can be null is target variable. Make sure ‘target’ is assigned to your script in inspector or in another script.