Couple mod cars wheels aren't rolling

[fnugen]

I've got a couple mod cars that a pair of wheels won't roll. A mustang where the fronts are locked and a Honda where the rears are locked. Obviously non-drive wheels, but the car won't move. These are the only 2 that have this issue. Any idea how to go about fixing this? I've got hundreds of downloaded cars, and only 2 have this issue, so it's not track or a general AC file. I just don't know anything about modding or how to find the issue in a file myself.

 

[Pfalzdriver]

Disable extended physics should fix it.

But that is just a workaround, in 99% of all cases those cars have an error in tyres.ini. Had this problem with an edit of mine too (M1 Procar) and it took me some time to figure it out. In my case the WEAR_CURVE in tyres.ini pointed to a lut which didnt even exist.

A wild guess from my side: Extended physics tried to access this file too, no data was found bc the file wasnt there, so it calculated with a zero. And we all know for example some multiplication with zero leads to ... zero.

Open the car in CM, hit "Unpack data" and check the tyres.ini in the folder data if there are references to non existing luts.

 

[fnugen]

Going to sound like a novice that I am, but where do I open in CM? I have done the Content/Cars but can't find where to find the unpack data option.

 

[fnugen]

Found it. About to try it. Thanks for the tip(s).

There are a bunch of "lut" references, what do I do with them?

 

[Stereo]

A wild guess from my side: Extended physics tried to access this file too, no data was found bc the file wasnt there, so it calculated with a zero. And we all know for example some multiplication with zero leads to ... zero.

Yeah, different behaviour from base game to csp extensions. If the base game can't read a lut the value is always 1, if csp can't read it it's always 0. Usually it means 0 grip though, not an inability to roll.

 

[fnugen]

If I untick extended physics, the one car will move like it should. I never checked the other. Figure fix one first. Once it's ticked again, back to wheels locked. Not the end of the world, but the one car is a fox body Mustang that is NOT a hatch. I prefer the notchback so getting this one fixed would be nice. The other Honda is one of MANY available, just more of a drag car and not high on my list of necessary cars to drive. I was playing around swapping some ini files, data folders from other similar Mustangs and got nowhere. I don't know enough of this stuff to start looking at lines in configs and knowing what to do. Thanks for any help.

 

[Pfalzdriver]

There are a bunch of "lut" references, what do I do with them?

Open tyres.ini with any text editor and search for "WEAR_CURVE".
Should be smtg like

WEAR_CURVE=semislicks_front.lut

Does the pointed lut - in the above case "semislicks_front.lut" - exist in your folder data?

Or maybe easier, just post the tyres.ini inhere and I'll take a look .... tomorrow

 

[fnugen]

I will copy past the ini here shortly when I am back at my gaming rig. Thanks @Pfalzdriver

 

[fnugen]

Here are the 2 offending cars tyre.ini files. The Civic has 2 data folders.

Mustang ini and Honda ini

 

[Pfalzdriver]

I just took a look at the second one, are all those files present in your data-folder?

street_front.lut
tcurve_street.lut
semislicks_front.lut
tcurve_semis.lut

The second data-folder - I guess its named data-1 - happens if you unpack the data.acd for a second time. You can delete that one.

 

[fnugen]

No. Doesn't look like with have these. Can they just be copied from elsewhere? Do they need to have been there when the creator made the car for them to work properly? Forgive the novice questions, I haven't done any editing since GTL.

 

[Pfalzdriver]

If you find a car which has those files you can copy them to the folder data of the car.

After that just rename the data.acd of the car to smtg like data.old and the car should work.

Edit: Or just tell me which LUTs are currently within the folder data. Might be easier to just change the tyres.ini.

 

[fnugen]

The Honda has these in it's original data folder.

__cm_tyre_perfcurve_front_0.lut
__cm_tyre_perfcurve_front_1.lut
__cm_tyre_perfcurve_rear_0.lut
__cm_tyre_perfcurve_rear_1.lut
__cm_tyre_wearcurve_front_0.lut
__cm_tyre_wearcurve_front_1.lut
__cm_tyre_wearcurve_rear_0.lut
__cm_tyre_wearcurve_rear_1.lut

 

[fnugen]

Well, I dug through the tyres.ini and found a few issues with wrongly named files. I got the Honda AND the Mustang working. WOOT!! Let's hope I can do it again if I get another car whose wheels won't rotate. Thanks for the help @Pfalzdriver