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Possible To Edit Ai Car Acceleration From Standing Start?


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#1 Argyle1968

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Posted Jul 13 2020 - 09:01 AM

Kindof a weird question but here goes.

I've used the 1969 mod low wing cars in some Formula 5000 carsets I've been assembling.  Graphically everything is fine--the various AI cars look great, I have a large percentage of the applicable tracks, etc.  The problem is with the AI physics of two cars--the BRM and the Matra/Murasama.  They are intolerably slow accelerating from the standing starts, especially since I'm using them as stand-ins for other car types prevalent in F5000 ca. late 60's and early 70's.  I know this must be a specific car physics problem because in other mods these cars don't behave the same way.  Is there anyone familiar with the physics that can point me in the right direction--a specific file within the .DAT or somewhere else?

Thank you for any help.

#2 JonnyA

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Posted Jul 13 2020 - 01:20 PM

There are two ways to modify the standing start acceleration for the AI, but both these methods effect all cars in the Mod, I don't know any way to pick and choose.

1. In your top level GPL folder, inside the file called gpla69.ini, in the Behaviour section at the top you can adjust the value of 'base_race_start_hiatus'. A lower number makes the AI react quicker to the starting flag and so they will get away faster.

2. In the same file, modify the value for 'inertial_factor' in the Physics section further down. From memory, reducing this number makes the AI accelerate more slowly (try it both ways to check).

Make sure you record the default values for both parameters so you can change it back if you don't like it.

#3 Argyle1968

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Posted Jul 14 2020 - 07:46 AM

View PostJonnyA, on Jul 13 2020 - 01:20 PM, said:

There are two ways to modify the standing start acceleration for the AI, but both these methods effect all cars in the Mod, I don't know any way to pick and choose.

1. In your top level GPL folder, inside the file called gpla69.ini, in the Behaviour section at the top you can adjust the value of 'base_race_start_hiatus'. A lower number makes the AI react quicker to the starting flag and so they will get away faster.

2. In the same file, modify the value for 'inertial_factor' in the Physics section further down. From memory, reducing this number makes the AI accelerate more slowly (try it both ways to check).

Make sure you record the default values for both parameters so you can change it back if you don't like it.

Thank you for the info.  I wonder if it is in fact possible to change the AI for the individual car types.

#4 KARTM

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Posted Jul 14 2020 - 08:02 AM

we did in 2001 a formula 5000 carset , completely obsolete now  of course , could you share more infos and pics about your project

#5 jgf

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Posted Jul 14 2020 - 08:53 AM

FWIW, I would think the Thundercars mod a better base for an F5000 project.

#6 PTRACER

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Posted Jul 14 2020 - 08:59 AM

View PostJonnyA, on Jul 13 2020 - 01:20 PM, said:

2. In the same file, modify the value for 'inertial_factor' in the Physics section further down. From memory, reducing this number makes the AI accelerate more slowly (try it both ways to check).

Other way around. Lower values = faster acceleration.

Try around 18 or 20 for 1967X. The default 30 is way too slow.

#7 KARTM

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Posted Jul 14 2020 - 09:10 AM

View Postjgf, on Jul 14 2020 - 08:53 AM, said:

FWIW, I would think the Thundercars mod a better base for an F5000 project.
depend of wich period  , Formula A/5000 did start in 67 in the US ,68 in the UK , power then was around 450-470 hp

#8 Argyle1968

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Posted Jul 14 2020 - 03:50 PM

View PostKARTM, on Jul 14 2020 - 08:02 AM, said:

we did in 2001 a formula 5000 carset , completely obsolete now  of course , could you share more infos and pics about your project

Hi.  I'm trying to put together carsets for the various 1970 F5000 series around the world--US Formula A, British F5000, Tasman series, Australian and NZ Gold Star series (technically Australia's Gold Star didn't go F5000 until 1971) and Canadian F5000.  It's taken a long time to accumulate good photos of the cars, the right tracks, the right track addons, and to paint all of the colorful liveries that started springing up ca. 1970.  I'm also putting together carsets for 1970 F1 and South African F1.  Here's a few screenshots.  I'll post more as time permits.

Attached File  Image10.jpg   65.97K   48 downloadsAttached File  Image11.jpg   59.94K   57 downloadsAttached File  Image12.jpg   69.23K   51 downloads

#9 Royale

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Posted Jul 15 2020 - 07:05 AM

View PostArgyle1968, on Jul 14 2020 - 03:50 PM, said:

Hi.  I'm trying to put together carsets for the various 1970 F5000 series around the world--US Formula A, British F5000, Tasman series, Australian and NZ Gold Star series (technically Australia's Gold Star didn't go F5000 until 1971) and Canadian F5000.  It's taken a long time to accumulate good photos of the cars, the right tracks, the right track addons, and to paint all of the colorful liveries that started springing up ca. 1970.  I'm also putting together carsets for 1970 F1 and South African F1.  Here's a few screenshots.  I'll post more as time permits.

Attachment Image10.jpgAttachment Image11.jpgAttachment Image12.jpg

There are complete 1970 F5000 US Formula A, British F5000 carsets as part of a project based on  Philippe Charuest work (http://srmz.net/inde...=9753&hl=f5000.) Davef and yours truly also started proper physics and menus before R/L took over. We can post a complete set here or somewhere if there is any interest in getting it finished and working.  Bob

Edited by Royale, Jul 15 2020 - 08:42 AM.


#10 KARTM

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Posted Jul 15 2020 - 08:29 AM

the 5000 carset was  our first effort and was more a fantasy then a historical carset but the second one the indy 67 was better , the last one that we did with Loyd ,Alan ,Charles  was the euro F2 that one was pretty good "for the time". in 1970 some cars in 5000 were more squarish like the lola t190 and the lotus70  , i did a couple of experiment then

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Edited by KARTM, Jul 15 2020 - 08:54 AM.


#11 Argyle1968

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Posted Jul 15 2020 - 09:13 AM

View PostKARTM, on Jul 15 2020 - 08:29 AM, said:

the 5000 carset was  our first effort and was more a fantasy then a historical carset but the second one the indy 67 was better , the last one that we did with Loyd ,Alan ,Charles  was the euro F2 that one was pretty good "for the time". in 1970 some cars in 5000 were more squarish like the lola t190 and the lotus70  , i did a couple of experiment then

You're right.  Those cars were more boxy.  Looks like a good start.  I haven't played around with the car editor in more than a decade but my fiddling was nominal at best.  I'm more of a "painter."

View PostRoyale, on Jul 15 2020 - 07:05 AM, said:

There are complete 1970 F5000 US Formula A, British F5000 carsets as part of a project based on  Philippe Charuest work (http://srmz.net/inde...=9753&hl=f5000.) Davef and yours truly also started proper physics and menus before R/L took over. We can post a complete set here or somewhere if there is any interest in getting it finished and working.  Bob

I wonder if that was from what I sent DaveF.  I sent him my F5000 carsets and he indicated that a group in another forum was thinking about doing an F5000 mod with true F5000 physics.

#12 Royale

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Posted Jul 15 2020 - 09:46 AM

View PostArgyle1968, on Jul 15 2020 - 09:13 AM, said:

I wonder if that was from what I sent DaveF.  I sent him my F5000 carsets and he indicated that a group in another forum was thinking about doing an F5000 mod with true F5000 physics.

That's me :)  Let me know.

Edited by Royale, Jul 15 2020 - 10:10 AM.


#13 Argyle1968

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Posted Jul 15 2020 - 10:59 AM

View PostRoyale, on Jul 15 2020 - 09:46 AM, said:

That's me :)  Let me know.

Sure!  I'd love to see what it looks like these days.

#14 MalBound

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Posted Jul 15 2020 - 03:29 PM

One thing is the 1969 Madrid Grand Prix carset. You know Tony Dean drivers a #12 BRM P261 V12 and Neil Corner drives a #14 Cooper T86 Maserati.
The cars for the 1969 Madrid Grand Prix carset are the BRM P261 V12 (from the 1968 mod), Cooper T86 Maserati (from the 1969 Xtra mode), Lotus 59, Brabham BT21, Lola T142, McLaren M10A, and Lotus 43 Ford.

2 F1 cars, 2 F2 cars, and 4 F5000 cars (8 cars in total).

#15 Argyle1968

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Posted Jul 17 2020 - 06:49 AM

WIPs

F5000s at Kyalami, 1970 South African Drivers Chamionship

Attached File  Image13.jpg   60.52K   36 downloads

Attached File  Image14.jpg   62.85K   40 downloads

A Yardley, 1970 F1

Attached File  Image15.jpg   66.78K   35 downloads

Edited by Argyle1968, Jul 17 2020 - 06:50 AM.


#16 Argyle1968

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Posted Jul 20 2020 - 04:47 PM

Bottleneck at Levin.

Attached File  Image18.jpg   166.88K   38 downloads

#17 Argyle1968

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Posted Jul 23 2020 - 03:28 PM

Evan Noyes at Wigram

Attached File  Image17.jpg   97.48K   19 downloads

#18 Argyle1968

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Posted Jul 31 2020 - 11:57 AM

Here's E. Fittipaldi's "formula 2" Lotus....

Attached File  Image12a.jpg   161.1K   22 downloads




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