Assetto Corsa  Topic is solved solved with post #6419

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Re: Assetto Corsa

Postby caiubbo84 » Tue 26. Feb 2013, 14:03

yokoyoko wrote:Thank you for the videos @ RafBR and Museumsteve.
Thx prodigy for updating the startpost!

News???

:roll:
:?: I thought I am word lazy :lol: no news I know - atm we wait on your tutorial "how to yaw and vertical with grafic driver" :lol: :D



Ohhh sorry,

i wrote grafic driver thinking dma !!!! :oops:

grafic driver don't work :( dx11 not supported in extractor!! so the only way is the memory access.... is very hard to find vertical....

anyone have the sorce of plugin so to see what is incorrect??
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Re: Assetto Corsa

Postby nclabs » Tue 26. Feb 2013, 16:58

You guys are great!
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Re: Assetto Corsa  Topic is solved

Postby sirnoname » Tue 26. Feb 2013, 23:51

Ok, as said the naming is difficult.
The vertical and lateral seemed to be swapped. But they are not the same.
I changed this now and also set all to zero if you quit the game.
PluginV2.zip
(1.5 MiB) Downloaded 2553 times


Now we must find out what this values are in name:
float wheelAngularSpeed[4];
float slipAngle[4];
float slipAngle_ContactPatch[4];
float slipRatio[4];
float tyreSlip[4];
float ndSlip[4];
float load[4];
float Dy[4];
float Mz[4];
float tyreDirtyLevel[4];


Too many slips and what is dy and mz? All seems to be vectors.
As minimum I need a map position and a look direction, but all this values are not named as they should normally (position and look direction I asume).
Need a description, ask someone for help here.

Here is a picture of the other plugin, the app. However the python is not stable and does sometimes not load the scripts if there are phyton calls like writing a file to disk, so it will be delayed until it is working stable:

It is based on the g-meter example and will be rewritten step by step for a simulator usage.
If a answer is correct or did help you for a solution, please use the solve button.
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Re: Assetto Corsa

Postby yokoyoko » Wed 27. Feb 2013, 14:57

They said on python
updated the document with the missing parameters, please wait a little bit more for a complete explanation of each parameter in the Python Doc.

Link for the doc: https://docs.google.com/document/d/13trBp6K1TjWbToUQs_nfFsB291-zVJzRZCNaTYt4Dzc/pub

For yaw, pitch, roll the answer was
We will output the requested data soon. + .... Yes those data will be available in Remote Telemetry UDP.


Now we must find out what this values are in name:

float wheelAngularSpeed[4];
float slipAngle[4];
float slipAngle_ContactPatch[4];
float slipRatio[4];
float tyreSlip[4];
float ndSlip[4];
float load[4];
float Dy[4];
float Mz[4];
float tyreDirtyLevel[4];



Too many slips and what is dy and mz? All seems to be vectors.


I asked "Giovanni Romagnoli" on this. Perhaps we get a answer before the complete explanation.

If I have to guess:
float wheelAngularSpeed = Winkelgeschwindigkeit des Rades (Rotationsgeschwindigkeit)
float slipAngle = Schräglaufwinkel
float tyreSlip = Schräglauf
float slipRatio = Radschlupf
float tyreDirtyLevel = um den Haftreibwert bei dreckigen Reifen zu senken?

If someone owns a tyre book of him http://en.wikipedia.org/wiki/Hans_B._Pacejka - I think this would help to understand.
Each tire is characterized by 10-20 coefficients for each important force that it can produce at the contact patch, typically lateral and longitudinal force, and self-aligning torque, as a best fit between experimental data and the model. These coefficients are then used to generate equations showing how much force is generated for a given vertical load on the tire, camber angle and slip angle.
BUT I don't know if AC is using Pacejka model - there are plenty other.

All seems to be vectors.
Yes I thought they are 4D Vectors with w,x,y,z components, or not?

@ sirnoname - thx for your time and the great work :!:
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Re: Assetto Corsa

Postby yokoyoko » Wed 27. Feb 2013, 15:51

Giovanni of AC answered pretty fast:


on dy; mz....
those are some details of the physics behaviour of the car, I'll try to do the docuement with the description tonight, helped also by my phisycs books, so I won't lack of detail
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Re: Assetto Corsa

Postby caiubbo84 » Wed 27. Feb 2013, 18:13

Hi

the new plugin is perfect!! :D

Can i request if is possible to add yaw acceleration? so to have the traction lost effect? ;)

thanks

Best regards

Valentino
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Re: Assetto Corsa

Postby sirnoname » Wed 27. Feb 2013, 22:26

Hi,

you must tell us where yaw is ;)
Please contact yokoyoko for some more details and stuff ...

Best regards,
SirNoName
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Re: Assetto Corsa

Postby yokoyoko » Wed 27. Feb 2013, 23:07

hi guys, I updated the python Document with a better description of the parameters involved and their range. 3 parameters have been left out and I will write them tomorrow after having spoke with the rest of the team to be sure to not make any mistake.
The Parameters involved are more or less the same at this stage of the Remote Telemetry.

Any correction / suggestion is welcome!


Here's the document:
ACPythonDOC.pdf
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Re: Assetto Corsa

Postby caiubbo84 » Thu 28. Feb 2013, 14:11

sirnoname wrote:Hi,

you must tell us where yaw is ;)
Please contact yokoyoko for some more details and stuff ...

Best regards,
SirNoName



Hi i think that yaw velocity is here in ac.GetCarState LocalAngularVelocity this is the vector with x,y,z angular velocity of the car as origin of axis.

Edit: in WorldPosition i think that are a vector with x,y,z position and w orientation, can this be possible?

Hope to don't say some what stupid!

If neeted i can do some tests! ;)

Regards Valentino
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Re: Assetto Corsa

Postby caiubbo84 » Thu 28. Feb 2013, 16:23

Another very cool effect is slipangle!!! Is the difference of the wanted direction and the real orientation of the car!!! The real traction lost effect!! AC is the best simulator...i think :D
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