Question by LeftyTwoGuns · Sep 24, 2013 at 08:17 PM · physics parent

How to parent one object to another but not share physics?

Not sure how well I phrased the question, but I have a vehicle whose chassis bounces and wobbles due to the spring settings of its wheel colliders (intended). There is a separate object that is conceptually a part of the vehicle, but I modeled and imported it separately because for gameplay purposes I don't want it to bounce- I want it to remain stationary but still travel with the vehicle as it accelerates.

I thought parenting it instead of making it all one model would do this but the object still bounces and sways with the vehicle, which I don't want. Anyone know how I go about doing that?

Add comment · Show 4

getyour411 · Sep 24, 2013 at 09:13 PM 0

can you freeze it's position.y via script or such?

robertbu · Sep 24, 2013 at 09:31 PM 0

It partly depends on the nature of the child. You can code it to track the x and z without modifying the y (not a child). Or as 'getyour411' suggests, 'freeze' the 'y' in script (as a child). Or you could smooth out the y movement using Lerp() if the object needs to track somewhat..

LeftyTwoGuns · Sep 24, 2013 at 10:56 PM 0

The object on the vehicle needs to be pointing up and remain upright at all times (the game has a 2D perspective), no matter how much the vehicle rocks. Constraining axis-position just causes the object to detach from the vehicle when it moves. Can you constrain without having to have a rigidbody attached?

Cherno · Sep 25, 2013 at 12:51 AM 0

You could work arund this problem by just attaching a small script to the would-be child object that makes it follow the would-be parent's position etc. as you like without the two objects actually being related.