Tweaking the RaceDemo car script

I've been tweaking the Car.js and Wheel.js script settings (not the code) but I've screwed it up. What happens is I'm lost very quickly with all that game physics jargon. What's the differential ratio? The Motor rpm range limits the top speed? Suspensing spring? And there's more. The thing is, now I have pretty much the behavior I want (a buggy or kart-like control) but it's so unstable (if I start steering and steering to the same direction, it eventually takes off and starts spinning around itself in the air. Pretty crazy).

I attach the settings I have for the car, but what I'd like is a URL where I could read something about car physics that would help be a) tweak effectively that script or even better b) build my own. What did OTEE use to build that demo? Are they that smart or did you do your homework on car physics before coding that demo?

Thanks!

 

Hi Manuel
Im pretty sure the wheel script goes on the graphical wheel, not the collider?

In the race demo, under Create, theres a "Car Wizard" To import the lot into your project, you need the car wizard(inside the editor folder) and the two scripts you already have.

Do you follow?

I have a small personal nightmare similar to yours. My car goes 10x faster backwards and flips for no reason going forward. So I know what you are facing. I have to rebuild my car 100% symetrical and I should be over my night terrors.
HTH
AC

 

Sure I know what you're talking about. I already used the Car wizard to build my car, that's not the problem. But thanks for the help anyways

 

Did you consider my point about not having the wheel script on the collider-have it on the wheel model instead?

_just tryin to get you rollin'
AC

 

Well, in the RaceDemo (which I mimic) the Wheel.js script is attached to the Collider, and then the script has a reference to the graphical wheel. Seems unlogical to attach that script to the graphical wheel seems the script already has a reference to it.

 

Sorry man, i was working from memory, and clearly got it wrong. Sorry abot that
AC

 

I created my own car and wheel scripts that don't depend on the wheel collider and I think are at least easier to use.

http://yogware.bluegillstudios.com/site/webplayers/car/car.html

I think I have the project folder hosted here:

http://yogware.bluegillstudios.com/Files/car.zip

Feel free to download and look at it. I created that because I wanted to see how hard it would be to make a car with actual cool suspension after hearing someone talk about struggling with the wheel colliders on the irc.

 

Hey, Yoggy, that control for the car you came with looks more like what I wanted. I'll take a look at your project. Thanks!

 

Hey,

I made some screenshots showing the settings I have used in FreedomArena.
Maybe they are helpful...

http://unity.dynamichead.net/playground/