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Question Hey, need help with wheel joint 2d

Discussion in '2D' started by ShadowZie, Jun 11, 2023.

  1. ShadowZie

    ShadowZie

    Joined:
    Nov 5, 2017
    Posts:
    70
    Hey, I have 4 2d cars all of them have the same settings on the wheel joint and rigid body but still some cars are slower why?
    racer #1 for some reason is slower than the other ones even tho he has the same speed
    and racer 4# is faster

    what should I change? in order for all of them to be at the same speed


     
    ShadowZie, Jun 11, 2023
    #1

  2. MelvMay

    MelvMay

    Unity Technologies

    Joined:
    May 24, 2013
    Posts:
    10,468
    If you're using the joint to move the body then it's relying on contact friction of the material you're using. Beyond that, when it applies a force it'll be inversely proportional to the mass; if you're using auto-mass option on the Rigidbody2D then they'll potentially have a different mass.

    The speed isn't linear speed though, it's just how fast those (CircleCollider2D?) are rotating so friction and mass and the time-in-contact with the "ground" are the only potential differences beyond differences in WheelJoint2D configurations.

    Beyond that I couldn't guess.
     
    MelvMay, Jun 11, 2023
    #2

  3. ShadowZie

    ShadowZie

    Joined:
    Nov 5, 2017
    Posts:
    70
    Thank you :)
    they have the same mass But I will play with the tine in contact with the gound and with the speeds I hope to get them right :)
    thank you
     
    ShadowZie, Jun 11, 2023
    #3