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Question Cinemachine Freelook + Playmaker = Jittering

Discussion in 'Cinemachine' started by OZBEND, Jun 21, 2023.

  1. OZBEND

    OZBEND

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    Jul 25, 2016
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    I'm using Playmaker. When I move the character (using Riggidbody and Smooth Look At Direction action) and the camera sideways at the same time, there is jittering. Forward/backward is ok. No such problem when using the Character Controller. When using the standard camera is also all fine. I understand that this is not your product, but maybe you can advise something. I have changed the update methods to Fixed etc'. It only helps for forward/backward movement.
     
    OZBEND, Jun 21, 2023
    #1

  2. Gregoryl

    Gregoryl

    Unity Technologies

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    There are many possible kinds of jittering, and many possible causes. A common one when using Rigidbodies is inconsistency when moving or rotating. Using the wrong API or doing it from the wrong place can interfere with the physics simulation and cause jitter.

    It's possible that jitter is always happening, but it's less noticeable when moving forward/back.

    Can you please paste here images of:
    • The inspector for the CM Brain
    • Inspector of the vcam or freelook in question - ideally in play mode while the character is moving
    • The scene hierarchy, showing the main camera, the vcma or freelook, and the target character (I need to see the relationship between them)
    • The inspector of the character's Rigidbody
     
    Gregoryl, Jun 21, 2023
    #2

  3. OZBEND

    OZBEND

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    Here is everything you asked for:
     

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    OZBEND, Jun 22, 2023
    #3

  4. Gregoryl

    Gregoryl

    Unity Technologies

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    Thanks. A video of the jitter would be helpful too.

    For now, can you try this diagnostic experiment?
    1. Put the Brain in SmartUpdate/LateUpdate (reset it to its default settings)
    2. Enter Play mode
    3. Move the player so that it's jittering
    4. While this is happening look at the freeLook inspector. At the top, to the right of the Solo button, it will say FixedUpdate or LateUpdate, depending on how the player is being tracked. What does it say?
     
    Gregoryl, Jun 22, 2023
    #4

  5. OZBEND

    OZBEND

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    Here is it:
     

    Attached Files:

    OZBEND, Jun 23, 2023
    #5

  6. Gregoryl

    Gregoryl

    Unity Technologies

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    Thanks for that. It means that the player is being moved on the render clock (i.e. in Update or LateUpdate). This is not generally compatible with Rigidbodies, which need to move on the physics clock (i.e. FixedUpdate).

    Why do you have a Rigidbody on the player? Can you remove it?
     
    Gregoryl, Jun 27, 2023
    #6

  7. OZBEND

    OZBEND

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    I use the Riggidbody because my character is horizontal (animal). I can't use the character controller (there is no jittering when using it) because its collider is vertical. In general, I can't find a solution
     
    OZBEND, Jun 29, 2023
    #7

  8. Gregoryl

    Gregoryl

    Unity Technologies

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    You can still use a horizontal collider and remove the rigidbody.
     
    Gregoryl, Jun 29, 2023
    #8

  9. OZBEND

    OZBEND

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    How? The Character Controller has its own capsule and can't be replaced.
     
    OZBEND, Jun 29, 2023
    #9

  10. Gregoryl

    Gregoryl

    Unity Technologies

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    You'll have to make your own character controller that uses your desired shape. There are many tutorials on youtube for this. I did a quick search and this is the first one that pooped up (I haven't watched it, but I trust that it will at least point you in the right direction):

     
    Gregoryl, Jun 29, 2023
    #10

  11. OZBEND

    OZBEND

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    I'm using Playmaker
     
    OZBEND, Jun 29, 2023
    #11

  12. Gregoryl

    Gregoryl

    Unity Technologies

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    I don't know playmaker. You'll have to do some hunting for relevant tutorials. Or don't use playmaker for this.
     
    Gregoryl, Jun 29, 2023
    #12

  13. OZBEND

    OZBEND

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    In general, there is no solution. Unity's developers don't want to add the ability to change the type of collider of Character Controller for more than ten years (I found very old posts on the subject)
    Thanks for your help
     
    OZBEND, Jun 29, 2023
    #13

  14. Gregoryl

    Gregoryl

    Unity Technologies

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    That's a little exaggerated. It just means that you'll have to do it a different way.
     
    Gregoryl, Jun 29, 2023
    #14