DOCS ACC Shared Memory Documentation

What use is steerAngle being -1 to 1? How do you know how many degrees of rotation that equates to if you don't know the car's steering lock?

 

With all of the talk about values that should be and more important SHOULDN'T be accessible in telemetry. Like live tyre-wear and so on. Why does the following entry in the shared memory, exist?

"float surfaceGrip | Ideal line friction coefficient".

Driving a race and having a number that says the track is however much grippy, in exact numbers seem a little much. IMO.
Could game the hell out of that data in changing conditions especially.

 

Can we have updated docs or at least updated car IDs? Thanks.

 

Updated Document should be ready around friday.
Have a lot to do IRL, so I am not up to date currently.
Just have to recheck some values.

Here's what new :

SPageFilePhysics

• int ignitionOn
  Ignition switch set to on?
• int starterEngineOn
  Starter Switch set to on?
• int isEngineRunning
  Engine running?
• float kerbVibration
  vibrations sent to the FFB, could be used for motion rigs
• float slipVibrations
  vibrations sent to the FFB, could be used for motion rigs
• float gVibrations
  vibrations sent to the FFB, could be used for motion rigs
• float absVibrations
  vibrations sent to the FFB, could be used for motion rigs

SPageFileGraphics

• int directionLightsLeft
  Is Blinker left on
• int directionLightsRight
  Is Blinker right on

GT4 Car Ids

• Alpine A110 GT4 2018
  alpine_a110_gt4
• Aston Martin Vantage AMR GT4 2018
  amr_v8_vantage_gt4
• Audi R8 LMS GT4 2016
  audi_r8_gt4
• BMW M4 GT42 018
  bmw_m4_gt4
• Chevrolet Camaro GT4 R 2017
  chevrolet_camaro_gt4r
• Ginetta G55 GT4 2012
  ginetta_g55_gt4
• Ktm Xbow GT4 2016
  ktm_xbow_gt4
• Maserati Gran Turismo MC GT4 2016
  maserati_mc_gt4
• McLaren 570s GT4 2016
  mclaren_570s_gt4
• Mercedes AMG GT4 2016
  mercedes_amg_gt4
• Porsche 718 Cayman GT4 MR 2019
  porsche_718_cayman_gt4_mr

 

New Documentation is up, see the first post.

 

Good Work, but ... in SPageFileGraphic is missing:
float iClock // Time of day in milliseconds
after int missingMandatoryPits and before int directionLightsLeft
(i think)

 

You're absolutely right.
Last 4 lines of SPageFileGraphic:

 

Sorry to derail this thread somewhat, but I'm working with the shared memory telemetry with Assetto Corsa (not Competizione) and can't seem to find a similar discussion thread. Given that much of the shared memory interface is shared across the two titles it may be valid for ACC as well.

Has anyone had any success with the brakeTemp metric? I get a static output of 26.0 for each brake regardless of whether I'm sitting in the pits or out on track. I'm wondering if the brakeTemp output was never actually enabled, or if perhaps only some cars utilise it?

 

I am making a simple app for myself to quickly get feedback and monitor status. It'll also send out values to a philips hue on game status (whether I am racing or not, so no one comes barging into my room - green means racing, dark yellow will mean in session/pit stop/pause menu and light off will be simply, come in and disturb me no prob ;-))

But I also want to have the flags in my app, for my other screen, this way I have immediate attention on the situation on track. The docs state the flags (see white screenshot from PDF) have these values which I programmed into an enum for readability. However when reading out I get values like -1002332136 for the yellow flag, and when in pause menu (whilst green flag) I got 1135528555...
Am I doing something wrong when reading out? Has something changed?
I'm using an older library though for ease of use, and maybe I should scrap that as I fear it isn't working and just program the readouts from scratch.
Anyone has had that issue too?

 

EDIT: never mind, messed up my sequential layout in the struct, it's all fine now ...
The memory PageFiles are still active though after the game ends, so a bit of magic with processes that are running is necessary to do certain stuff...

 

Any C#-ies in here who have experience with marshalling?
Check https://stackoverflow.com/questions...struct?noredirect=1#comment111876504_63267351 (this has to do with the graphicspagefile).
I now "skip" this so I can read the rest of the the data, as I don't need it for my application. But if it would be needed in the future, I guess with the current float[,] the Marshaller wouldn't be able to know where to put the values...
Anyone knows how I can improve this for future use?

 

This is what I do...

Code:

        public ACCPosition[] carCoordinates;
        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 60)]

Code:

    [Serializable]
    [StructLayout(LayoutKind.Sequential, Pack = 4)]
    public struct ACCPosition
    {
        public float xPos;
        public float yPos;
        public float zPos;
    }

 

@Ensi Ferrum Is there a reason why the inner, middle, outer tire temperature is not shared via API? In contrast to AC1 we only have the core temperature, as far as I can see.

 

Thanks, I eventually figured it out thanks to Zach of RacingSimTools - but this confirms it extra.
Learned sth new I don't use at work, always nice . Do you interact with the UDP interface as well, or only shared memory?

 

Thanks for your detailed notes and keeping things up to date while IRL is busy it seems.
Any chance you or others happen to know what these values mean for the penalties?

ACC_DISQUALIFIED_TROLLING = 15,
ACC_DISQUALIFIED_PITENTRY = 16,
ACC_DISQUALIFIED_PITEXIT = 17

PitExit and PitEntry, is that crossing the line?
Trolling, is that driving slowly or...?

Maybe @Aristotelis knows more about these values?

 

I mainly use UDP but use shared memory to fill in the gaps that you can't get from UDP (session change, player car tyre temp, pressure, fuel, damage etc)

 

guys, does anyone have any documentation that defines the UDP broadcast data's CarModelEnum? For the race opponents there's no car class information (car model name or car class name), just this enum (which is just an integer). Unfortunately I can't seem to find any documentation that maps the enum values to the corresponding car models. Is this written down anywhere?

 

Hi Jim,
Here you go

 

thanks Doug

[edit]

quick question about these classes - is the Huracan ST in the same class as the GT3 cars or is it a single make class?

 

Super Trofeo is a single make class