Vector3.SmoothDamp jitter

Questions & Answers
1

I’m having trouble with the camera collisions and Vector3.SmoothDamp…
Here’s a video of the problem: Imgur: The magic of the Internet

If you know there’s a way to fix this, please let me know. I’ve been trying to fix it for a few hours but made no progress so far…

The code for my camera collider:

public GameObject behindCamera;
public GameObject character;
public GameObject cameraCenter;
public Camera cam;
public Transform playerTransform;

[Header("Collision Settings")]
public float collisionSensitivity = 1;
public float collisionDamp = 1;
public Vector3 currentVelocity = Vector3.zero;

public void HandleCameraCollisions()
{
    behindCamera.transform.localPosition = new Vector3(cam.transform.localPosition.x, cam.transform.localPosition.y, cam.transform.localPosition.z - collisionSensitivity);

    if(Physics.Linecast(cameraCenter.transform.position,behindCamera.transform.position, out _camHit)) //Check if the raycast from the player to the camera hits anything
    {
        //Move the camera to the raycast hit location
        cam.transform.position = Vector3.SmoothDamp(cam.transform.position,_camHit.point,ref currentVelocity,collisionDamp*Time.deltaTime); //FIX THE SMOOTH DAMP

        Vector3 localPosition = new Vector3(cam.transform.localPosition.x,cam.transform.localPosition.y,cam.transform.localPosition.z + collisionSensitivity); //So it won't be directly in the object it collides with
                                                                                                                                                               //but just a little in front
        cam.transform.localPosition = localPosition;
    }
    Debug.DrawRay(cameraCenter.transform.position, behindCamera.transform.position, Color.green);

    //Make sure the camera won't clip through the player
    if(cam.transform.localPosition.z > distCameraCollisionFromPlayer)
    {
        cam.transform.localPosition = new Vector3(cam.transform.localPosition.x, cam.transform.localPosition.y, distCameraCollisionFromPlayer);
    }
}
2

As always I can always always recommend to read the documentation.

Link to docu here.

If you check out that page carefully you’ll notice that the example code does not include Time.deltaTime as a factor for the smoothTime. My suspicion here is that your jittering appears since you don’t have a constant time in there.

On top since there is an optional argument to pass a deltaTime to the function that this smooth time must be a constant value for this to function properly.