Camera jittering on moving platform

Hi. I have a weird camera jittering while my player is on the moving platform
I use two cameras. One free-look camera and one virtual camera for my "aiming" purposes
When I step on the moving platform, on activating free-look default camera, my environment is jittering.
If I switch to my aim camera, the jitters transfer on my third person character.
Jitter amount is lowering when I look ahead, and raises when my character turn left or right.
I am using fixedUpdate to move my platform, since my character is rigidbody based.

Here is a simple video that visualize my problem: https://imgur.com/IQWv4Fd

Am I missing something? Thanks in advance!

 

Hey Gregoryl. My update method from main camera is set to "Smart update"
On game running It says "late update"
I tried switching it to "Fixed update" from the main camera. and that fixes the problem with platforms.
However this way, my character start jitters when he is not on the platform

 

I don't have any rigidbody on the platform itself. I am using a script to move the platform using transform.position mainly.

 

It is very weird.. Actually, I am moving my platform using fixedUpdate.. here is the full code : https://hatebin.com/yqlaiglmqq

 

This way (both ways actually) breaks my functionality of the platforms .. Maybe I should check my rigidbody. It's weird that changing the main camera update method to "fixed update" from "smart update" fixes my problem with the platforms, but open a problem with my character controller...

 

I tried testing your code, just to see is there any difference in the behavior of the player after replacing Time.time with time.deltaTime.
I read the above topic and it is really informative.

The player still jitters on the platform. Is it possible the issue to be in my player controller script?

 

Ok. I don't have any idea why this, but it gets actually better after I turn character controller rigidbody Interpolate from "Interpolate" to "None"
I hope it won't affect on my physics

 

The thing is that if I turn on interpolate of my character rigidbody only "left" and "right" movement is jittery.. The forward and backwards movement is still smooth.

Video: https://imgur.com/a/5Q80XJt

After making platforms on update instead of fixedUpdate and turn on my interpolate I get jittery movement from the player not from the camera while the platform is moving.

 

I am making a similar to platformer game, so I would have platforms that move constantly and my player needs to be able to jump precisely from one to another.

 

Oh sorry. I am using very simple way to parent the player to the platform onCollisionEnter

Code (CSharp):

1.  
2.  void OnTriggerExit(Collider other)
3.     {
4.      
5.         if (other.gameObject.tag == "Player")
6.         {
7.             other.transform.parent = null;
8.         }
9.     }
10.     void OnTriggerEnter(Collider other)
11.     {
12.         if (other.gameObject.tag == "Player")
13.         {
14.             other.transform.parent = transform;
15.         }
16.     }
17.  
18.  

I have a second box collider with trigger function on each platform

 

The situation is that I am moving my character in fixedUpdate and my platforms in fixedUpdate.
When my main camera's update method is set to "smart update" , my character camera jitters on the platform.
When my main camera's update method is set to "fixed update" my character itself starts to jitter but the platform jitterings disappear

That is when my character has interpolate set to "interpolate"

The solution I found to stop the jitters and stay again in "smart update" is to turn off my character interpolation and set it to "none"
That way, at least for now, my character does not jitter on ground or platforms

I am not sure if this is the right way regarding my physics and will it affect my gameplay, so I don't know if the problem is solved or not

I tried making platforms move on update instead on fixedUpdate, but my character jitters when collides with that

 

Do u think my lack of interpolation on third person controller rigidbody will cause any issues? Like fall from the map, stucking or something? For now I cannot see any difference in the negative aspect.

Alternatively I found a more advanced way to get rid of jitter -

But honestly, if it ain't broke, don't fix it

 

U are welcome! It is very weird that the interpolation must "smooth" the jitter and in my case does the opposite.
I think my problem is fixed for now. If I have any weird physics because of no interpolation on my character, I will try with the video above, and if I have any other issues I will open a new thread.
As always u were so kind helping me with the problem. Thank you very much!

 

Hi. I actually happen to have kind of the same problem. I don't really understand how you solved your problem because I feel I'm having the same one as you.

First of all, after way too much googling for a week I found that this should always be true:

Update() check for input
FixedUpdate() move gameObjects that have riggidbody/apply forces
LateUpdate() move Camera

So that is what I did. I move my character in FixedUpdate() and my Camera in LateUpdate(). That causes jitter, of course, so I interpolate the character's rb and it does the trick. Everything is smooth as hell.
Now, I try to do the same with the moving platform. I move it in FixedUpdate() and I set its rb to interpolate... but idk why, it jitters anyway, no matter what... when the player gets on it, it gets patented by the platform via Setparent but the jitter is horrible.
So, the cause of that problem is obvious. The platform is moving in FixedUpdate() and the camera in LateUpdate() so their timesteps don't match and the only way to fix the problem would be to interpolate the platform's rb, but it won't work.

What I have tried to solve this issue:

I tried to change the platform's movement method to Update() so its timesteps would match with the camera's LateUpdate() one... and it works perfectly!!!
Now the problem comes when the player tries to get on it. If you stand still everything is smooth, but when you try to move, the player's speed is so slow that you can barely move. It is like the player inherits the platform's Update() function and overrides the player's Fixedupdate() and because the player's speed depends by fixedDeltatime, it won't work in an Update() function.

I have also tried to set the camera to FixedUpdate() and turn off all interpolation... everything jitters

I have tried many other things but I think the problem resides in their timesteps.

The solution I found and I dont like:

Instead of moving the platform via script, I tried to animate the platform. It jitters like when it was moving with FixedUpdate(). However, in the animator component, there's a setting called update mode. I set it to animate physics to get rid of the jitter as the interpolation would do.... and all over the sudden everything works smoothly, even when the player gets on the platform and moves or stands still..

This is not the optimal solution because you would have to create an animation for every movement behavior, like going up and down instead of left and right and so on..

I dont know if this is a bug or there's something I'm missing...

 

Hey. Try turning off the character rigidbody interpolate. I set it to None and it works for me... I think it may also depend on the controller. Also, do u try with the video I posted?

 

I tried but still jitters because the camera moves in LateUpdate and the character in FixedUpdate.
The camera needs to be in LateUpdate so all callculations have finished before render the frame.

 

I actually tried to move everything to fixed update and yes, everything was smooth... until I realised that the camera was being capped by the FixedUpdate timestep(0.02) so even tho my game was running at 120 fps, it looked like 40~50, so that didnt work either. I, of course, could change that to 0.01 and I'd get 60fps but I think that'd be a waste of performance.

At first, when my platforms didn't work properly, I was animating them with physic forces (moveforward) and interpolation wouldn't work... it was when I was moving them by animations when everything worked (checking animate physics in the animator component)