Question Weird snappy rotation

Hello guys,

I'm pretty new to coding and working with unity so please have mercy with me ^^'
But I have fun experementing a bit with Unity and working on a dumb childhood dream^^

But here my problem now, I'm currently working on a 3rd person character controller where I use
spherical coordinates to rotate the camera around the player. Probably not the best way to do so, but I wanted to try it like that. Now it's workling almost fine except that my character is "jiggeling" if it is rotated. I think, that the lookAt method isn't compatible with my code because if I use it in the LateUpdate function the "jiggeling" is just a bit, but if I use it in the beginning of the Update function where my camera position is calculated it starts "jiggeling" super hard.
Also it becomes worse if I select the playermodel in the scene.
Here a video: YouTube (in the description are timestamps)
Does anybody know what the problem is?
Also I'm using a rigedbody for my character

Here my code:

Code (CSharp):

1.     void Update()
2.     {
3.         //Camera.transform.LookAt(LookAt);
4.  
5.         x = r * Mathf.Cos(phi) * Mathf.Sin(theta);
6.         z = r * Mathf.Sin(phi) * Mathf.Sin(theta);
7.         y = r * Mathf.Cos(theta);
8.         newPosition = new Vector3(x, y, z);
9.  
10.         Camera.position = transform.position + newPosition + startPosition;
11.  
12.         //Adjust r
13.         mouse_scroll = controls.Camera.ScrollWheel.ReadValue<Vector2>();
14.         r += mouse_scroll.y * Time.deltaTime * scrollingSpeed;
15.         r = Mathf.Clamp(r, max_r, min_r);
16.  
17.         //Adjust phi and theta
18.         mouse_position_raw = controls.Camera.MouseDelta.ReadValue<Vector2>();
19.         if (phi >= 2 * pi || phi < -2 * pi)     //reset phi
20.         {
21.             phi = 0f;
22.         }
23.         theta += rotationSpeedTheta * Time.deltaTime * mouse_position_raw.y;
24.         theta = Mathf.Clamp(theta, theta_limitation, pi - theta_limitation);
25.         float rotation = rotationSpeedPhi * Time.deltaTime * mouse_position_raw.x;
26.  
27.         if (sidewaysMovement != 0 || straightMovement != 0)
28.         {
29.             if(freeLook == true)
30.             {
31.                 transform.localRotation = Quaternion.Euler(0, -phi * Mathf.Rad2Deg, 0);
32.             }
33.             phi -= rotation;
34.             transform.Rotate(0, rotation * Mathf.Rad2Deg, 0);
35.         }
36.         else
37.         {
38.             freeLook = true;
39.             phi -= rotation;
40.         }
41.     }
42.     private void FixedUpdate()
43.     {
44.         speed = 6.0f;
45.         if (straightMovement < 0.0f)
46.         {
47.             speed = 2.0f;
48.         }
49.         if (sidewaysMovement != 0.0f)
50.         {
51.             speed = 4.0f;
52.         }
53.         if (straightMovement < 0.0f && sidewaysMovement != 0)
54.         {
55.             speed = 2.0f;
56.         }
57.  
58.         straightMovement = controls.Player.StraightMovement.ReadValue<float>();
59.         sidewaysMovement = controls.Player.SidewaysMovement.ReadValue<float>();
60.  
61.         moveDirection.x = straightMovement * speed * Time.deltaTime;    //WS
62.         moveDirection.z = sidewaysMovement * speed * Time.deltaTime;    //AD
63.  
64.         transform.Translate(moveDirection.x, 0, moveDirection.z);
65.         //playerBody.AddForce(moveDirection, ForceMode.VelocityChange);
66.     }
67.     private void LateUpdate()
68.     {
69.         Camera.transform.LookAt(LookAt);
70.     }

 

Traditionally the camera should be moved in FixedUpdate if its position is dictated by a Physics object.

Have you tried just combining the above blocks of code into FixedUpdate()? Or at least doing the camera position setting and LookAt-ing in FixedUpdate()?

 

Hey, yes I tried it and it doesn't change :/