DOCS ACC Shared Memory Documentation

Based on my quick check, it seems there are no new additional fields in the shmem structs.

The shmem still reports AC version as 1.7. I submitted a bug report on that.

Only thing is the car ids + track name from the game. These seem to be the car identifications
ferrari_296_gt3, 32
lamborghini_huracan_gt3_evo2,33
porsche_992_gt3_r, 34
and the Valencia track id seems to be
Valencia, 24

Still waiting for the brake balance etc. data ...

Cheers.

 

Yeah, observing the same, this is mildly annoying

Actually, scratch that. I am receiving correct-ish values. SMVersion reads 1.9 for me while ACVersion reads 1.7 for me

 

Yes, exactly. The SM is supposed to be the Shared Memory version, and it was 1.9 also with the 1.8 AC branch, i.e. since last change of the structs. The ACVersion has been 1.7 for quite some time.

Cheers.

 

Hello everyone

I had started a project on paper a long time ago and wanted to start developing it after a long break.

Unfortunately, I can no longer find the SharedMemoryReader.dll. I had saved the link "https://www.assettocorsa.net/competizione/modding-docs/", but unfortunately the page is no longer available.
The project should be realized in C#.

Also the GitHub repos I had saved haven't received any commits for at least 2 years.

Can you help me and maybe recommend one or two good repos?

Cheers

 

There looks to be an issue with the static region dryTyresName - This is still reporting "DHE" for 2022 tracks - my understanding is it should be DHF now.

At the moment, there is no differentiation in SHM or UDP of the track year and the only way I can infer it on the client side is by the tyre (ie DHD2 = 2018/19, DHE is probably 2021 and I was hoping DHF would tell me that we are on 2022 tracks). Why does this matter? People like to categorise their sessions and presumably there is a difference in tyre performance and BoP between years

Cheers,
Doug


ACC Results Companion
https://www.racedepartment.com/downloads/acc-results-companion.28298/

 

I've kept this https://github.com/coderMaff/ACCSharedMemory fork of the ProBun C# ACC Shared Memory library up to date (as far as 1.8). I think it's right, just keep in mind the it uses System.Timers so it gets a bit flakey once you get below 14ms resolution and you'd be best to code your own timers if you need more.

Maff

 

Just want to ask when the updated version 1.9 of the shared memory documentation will be uploaded?

 

Are there any updates announced?

 

The 3 new cars from 2023 season?

 

Only numbers in the API, so no change...

 

I am trying to figure out how to get the "Race Countdown" time/State when a race is about to start before players are able to drive.

Is this possible through the API?

 

According to my own investigations, you only can get the green flag.

 

Dang, well i guess i can work with that, how do i access that?

 

C++: (SPageFileGraphic*)m_graphics.mapFileBuffer)->flag == AC_GREEN_FLAG)

 

The last times the documentation was also updated without changes. Would be useful to have IDs, max steer angle, etc. at one page.

 

Is there any info in the sharedmemory that i can use to check if i'm in a team race or solo race?
I've found the Drivername info but that is only for myself if i'm correct

 

I am building a project that needs the absolute slip angle in degrees. I tried using physics.wheelSlip but the values are sort of weird. They work if I want to do a ratio but it doesn't seem they are real absolute angles. Here is what I'm currently doing, which works but doesn't give me an absolute angle but rather a ratio:

Code:

# slip
        slipFrontLeft = mapNum(info.physics.wheelSlip[0], 0, 10, 0, 1)
        slipBackLeft = mapNum(info.physics.wheelSlip[2], 0, 10, 0, 1)
        slipFrontRight = mapNum(info.physics.wheelSlip[1], 0, 10, 0, 1)
        slipBackRight = mapNum(info.physics.wheelSlip[3], 0, 10, 0, 1)
        slip_ratio_front = round((slipFrontLeft + slipFrontRight) / 2, 3)
        slip_ratio_back = round((slipBackRight + slipBackLeft) / 2, 3)
        # Initializing understeer and oversteer
        understeer = 0
        oversteer = 0
        # Calculate understeer or oversteer
        if slip_ratio_front > slip_ratio_back:
            understeer = slip_ratio_front - slip_ratio_back
            print("Understeer: ", understeer)
        elif slip_ratio_back > slip_ratio_front:
            oversteer = slip_ratio_back - slip_ratio_front
            print("Oversteer: ", oversteer)
        else:
            oversteer = 0
            understeer = 0

I also tried slipAngle, tyreSlip and slipRatio but they all are not what I am looking for. Does anyone know how to extract this absolute slip angle?

 

That is indeed very complicated stuff and not at as easy as in your approach. Maybe you want to take a look into the attached research paper.

 

And I think, what you are trying to achieve is already fully implemented in my software package. It is Open Source, so you can "steal" from it...

https://github.com/SeriousOldMan/Si.../Setup-Workbench#real-time-telemetry-analyzer

 

Actually not obviously, but I think, the car IDs are above 1000 for online races.