Mathf.PingPong inside a FixedUpdate not smooth

Hello guys,

I want to use this part of code.

Code (CSharp):

1.     void FixedUpdate () {
2.         if (IsStun == false) {
3.             if (CameraScreenShotMap.activeSelf == false) {
4.                 GetComponent<Rigidbody> ().position = Vector3.Lerp (StartPosition, EndPosition, Mathf.PingPong (Time.time / PatrolSpeed, 1f));
5.             }
6.         }
7.     }

The problem is that the patrol is not smooth. it jerks a little. I need to do a fixedupdate patrol that's why I do not put it in update and in addition it's a rigidbody.

Thank you.

Alexandre

 

Line breaks are not your enemy and please cache your GetComponent call.

How does it look if you put it in Update instead?

 

Thank you for the reply

Everything is working now with Update method. My bad!

 

The issue probably has to do with FixedUpdated getting called unrelated to frame rate. FixedUpdate can be called several times or 0 times between frames.

 

It has to do with the FPS, let me explain, by default FixedUpdate() is called every 0.02 seconds.
Here you have two problems, Never use GetComponenet often, if you need to often cache it,

Code (CSharp):

1. RigidBody myRigidBody = GetComponent<RigidBody>();

believe it or not but this will have noticeable difference in the FPS.
The Second problem is in

Code (CSharp):

1. Vector3.Lerp (StartPosition, EndPosition, Mathf.PingPong (Time.time / PatrolSpeed, 1f));

You need to multiply your 3rd parameter with Time.fixedDeltaTime;

Code (CSharp):

1. Vector3.Lerp (StartPosition, EndPosition, Mathf.PingPong (Time.time / PatrolSpeed, 1f) * Time.fixedDeltaTime);

Note: In Update() you should use Time.deltaTime instead of Time.fixedDeltaTime.