PHYSICS QUESTION:

Hi everyone:

I really want to understand something:

i have a physic ( 804bhp 17850rpm)

i updated the gp4 executable with THIS physic.

my perfset is set to 804bhp.

when (gpxpatch) CAR POWER TEAM DEPENDENT is on, the car behaves slower than when its turned off. the acceleration and end speed are totally diff.

i ´d like to know WHY if the executable and perfset are set to the same values of the physic file..

what changes to make a car a way better without car power team dependent, considering the values of executable( 804bhp 17850rpm) ------perfset( 804bhp) and physic file ( 804bhp 17850rpm) are the same??

thanks!


________WELCOME BACK SCHUMMY!!________




Edited 2 time(s). Last edit at 01/31/2010 03:41AM by pimpones1.

when you disable car power team dependant the player car has a default bhp value wich is not stored in the physics or perf file but somewhere in the .exe. all cc-cars get the bhp saved in these files though. that means if you modify these values and car power team dependant is disabled you will be a lot faster than the other cars if the bhp set in the physics/perf file is lower than the original gp4 value.

---

used to be GPGSL's Nick Heidfeld

noobinio? its been ages uh?

ok, lemme see if i got what you say.


the original gp4 bhp is 855, so the only way to play without the car power team dependant, is build a perfset and physic with 855 bhp.. RIGHT?

I mean..if AI car has 855bhp(perfset) and the palyr car has the 855 bhp( executable) will they have the same performance? speed and acceleration?

Hi Pimpones1,

Acceleration and top speed depend on ALL these parameters:
- Physics
- Performances
- TORQUES

What you should do, is inserting the torques of 804bhp at your GP4.exe file.

I explain what happens if you use only the physics and the performances, but not the torques:

As you said...
> when (gpxpatch) CAR POWER TEAM DEPENDENT is on,
> the car behaves slower than when its turned off.
> the acceleration and end speed are totally diff.
> i ´d like to know WHY if the executable and
> perfset are set to the same values of the physic
> file..

... when using 804bhp as "race" and "qualy" power in the physics, these are "human only" settings (look at the screenshot below).
The AI cars STILL run with 855bhp because of the TORQUES CURVE, while you run with 804bhp.



When CAR POWER TEAM DEPENDENT is OFF you don't use any external performance file and your car runs with the default GP4 performances that assign to you an engine power near 855bhp (depending on driver selection).
You are still close to AI cars, but not equal to them, because in physics you run 804bhp and they run 855bhp.
__________PLAYER____AI
Physics______804____855
Performance__855____855
Torques_____855____855

When you set CAR POWER TEAM DEPENDENT at ON, you think you assign really 804bhp to all cars.
But what happens now is this:
__________PLAYER____AI
Physics______804____855
Performance__804____804
Torques_____855____855
This is even worse and makes player's car even slower, as you already noticed.

TORQUE EDITING is the only way to fully control the AI engine power and force them to use 804bhp.
In this case we have:
__________PLAYER____AI
Physics______804____804
Performance__804____804
Torques_____804____804

Now you know what to do and why it is necessary.


_________________________
some of my GP4 works ...

cyber.. thanks for the explanatiopn but as i said on 1st topic.. i updated the executable with 804 and still have diff.. ( and yes, i used the editor to edit the torque lines, and set them to the values of 804 read me file ))

maybe my game is bugged hehehe

cheers



Edited 1 time(s). Last edit at 01/31/2010 04:11PM by pimpones1.

pimpo,

GP4 functions are really strange some times...

one last hint:
In game menu > options > race options > opposition spread, you see the selections "2001 level" and "all the same".
Drive some laps with each of them and then select the one that gives you better results.

cheers...

_________________________
some of my GP4 works ...

gp4 has 7 bhp values that need patching, 3 qualy, 3 race and 1 for torque.
physics editor only patches 2 of these, stick to 855bhp as a base bhp value

pk






yas marina

belini on youtube
[uk.youtube.com]

Belini.. if we change the values of the physic file up to 855, the same to perfset.. maybe it wont work properly considering the torque curve is built to work with 804bhp.

Al long as we use the original torque curve(855) and build everything around it.

im too stupid to understand those things..

what if i change the original game files? i mean.. get the original physic file and change only the rpm to 18000 and build a perfset based on the famous 855 original bhp?

pimpones1 Wrote:
-------------------------------------------------------
> Hi everyone:
>
> what changes to make a car a way better without
> car power team dependent, considering the values
> of executable( 804bhp 17850rpm) ------perfset(
> 804bhp) and physic file ( 804bhp 17850rpm) are
> the same??
>
> thanks!

i believe that similar question was formulated (11 Feb 2003) in the SDI forum... look in your backup's.

PS: something to do with hotseat mode?

----signature--------------------------------------------------------

RELEASE => Physics (under FIA Technical Regulations)
MagicDatas? Setups? Pit Stop Strategies? Track Specific Performances? Up2Date GP?
Power Torque Curve? Where's this stuff? All download is available at ..

pimpones1 Wrote:
-------------------------------------------------------
> Belini.. if we change the values of the physic
> file up to 855, the same to perfset.. maybe it
> wont work properly considering the torque curve is
> built to work with 804bhp.
>
> Al long as we use the original torque curve(855)
> and build everything around it.
>
> im too stupid to understand those things..
>
> what if i change the original game files? i mean..
> get the original physic file and change only the
> rpm to 18000 and build a perfset based on the
> famous 855 original bhp?

or you could hex edit these values

gp4 bhp/torque
1B714 - 845 race
1B722 - 855 qual
1B734 - 856 torque value (max bhp rounded up 855.7@16500rpm)
3CD34 - 845 race
3CD39 - 855 qual
3CD76 - 845 race
3CD82 - 855 qual

it's best to set values qual/race the same, this way you'll notice an increase in top speed
when in qualifying

pk






marina bay 2008

belini on youtube
[uk.youtube.com]

belini..

those values are from original game uh!?

if so.. am i wrong to think something like this:

all i have to do is create a perfset, changing the driver and team names, respecting the top original bhp numbers?( eg:860bhp williams qualy 855 race)

hahammm... :p





----signature--------------------------------------------------------

RELEASE => Physics (under FIA Technical Regulations)
MagicDatas? Setups? Pit Stop Strategies? Track Specific Performances? Up2Date GP?
Power Torque Curve? Where's this stuff? All download is available at ..

pimpones1 Wrote:
-------------------------------------------------------
> belini..
>
> those values are from original game uh!?
>

yes

> if so.. am i wrong to think something like this:
>
> all i have to do is create a perfset, changing the
> driver and team names, respecting the top original
> bhp numbers?( eg:860bhp williams qualy 855 race)

if you reference 845/855 bhp for the team that is quickest then you'll be ok, if you want to
use any other bhp/torque values then the only way to get the game to run well is to hex
edit those values.

it's very subtle but is most noticable when using lower a bhp than the default. so if you're
looking at simulating 2010 @750bhp if you don't patch the values you'll notice that you will
out accelerate a car with the same bhp, of course grip comes into the equation but you can
fix this with the belini grip patch (old gp4 downloads) which uses grip from a perf file rather
than the 16384 player default.

pk



belini on youtube
[uk.youtube.com]

bELINI..

sorry if im bothering you with all those questions but im trying to learn more about it.

Whats the difference between hex editing values ( bhp) and use physic editor, change all the values and click on UPDATE GP4.EXE?

pimpones1 Wrote:
-------------------------------------------------------
> bELINI..
>
> sorry if im bothering you with all those questions
> but im trying to learn more about it.
>
> Whats the difference between hex editing values (
> bhp) and use physic editor, change all the
> values and click on UPDATE GP4.EXE?

because the physics editor only patches the first 2 of these values

gp4 bhp/torque
1B714 - 845 race
1B722 - 855 qual
1B734 - 856 torque value (max bhp rounded up 855.7@16500rpm)
3CD34 - 845 race
3CD39 - 855 qual
3CD76 - 845 race
3CD82 - 855 qual