Kart Racing Pro Motion Support

Has anyone else tried this sim?

http://kartracing-pro.com/?page=about

It's pretty good and is gaining some momentum. It would be nice to have support for this in xsim. The developer has a telemetry dll and example code on his site. Is anyone else already working on support for this?

I think the demo is free. The demo seems to be the same as the full version. You just enter a license code into the demo to make it a full version.

I can buy a copy for the community if it is needed.

http://kartracing-pro.com/?page=downloads

Yes the demo does not support the telemetry feed. I have the full version so I am willing to test the plugin.

I am led to believe that this game is not compatible with any rFactor stuff. Am I wrong in thinking that the telemetry.dll in the plugins folder is what the example .c file is calling?

Yep that makes sense, useless sending me a build you have no idea will work.
I am also willing to pay for a license if required. You do make a good point about the release version, its early days for the sim.

I have cleared up how the telemetry works, it appears as though the sim fires off a call back to your code and sends the data, this would cause blocking of the sim if not returned immediately. I asked the developer if they would consider another method like a memory map so that the blocking would not occur.

Sorry mate, I wasnt saying xsim would block, I was just saying that KRP waits for the return of the callback before continuing with the processing of the sim, he does not fire those of async.

The telemetry.dll plugin file is a sample dll that the developer made to log the telemetry to a file. To my knowledge its not required. I'm also trying to get my version of the test code working at the moment but can't see my output file. Ive made a simple dll in C++ express using just the sample code but cant get it to work either.

I can see that the original dll is in C and mine is C++. Its got some weird stuff in the function names and also has different entry points. Are you able to make it work? I'm not that great with c++, im a delphi guy.

Yeah mine is something like ?Startup@@YAHXZ. Not sure why this is happening, like I said im new to c++. If you get a solution let me know, please?

So after doing some reading im guessing im on the right track that there needs so be some code or compile option regarding name mangling?

I got the functions displaying correctly in dependency walker by changing the code from:

__declspec(dllexport) char *GetModID()

to:

extern C __declspec(dllexport) char *GetModID()

I will try and get it working with the sim

Cheers, good stuff. I got my version working also. I needed to get it working for one of my own hardware projects as well as my simxperience setup

Hi,

You got it working? Can you give us the info how we get Kartracingpro to work with our X-sim rigs too?

I can't try that sample that sirnoname uploaded cos im not at home. You think you can give it a go Henning? haha I recognize you from iRacing forum Henning! That setup of yours is coming along nicely!

@sirnoname I have posted a conversion of the c example to visual c++ project that I made on the KRP forums. I left a note to see if any other dev over there wants to make a MMF proxy project to improve the efficiency of multiple apps grabbing telemetry. If that was to happen, is it a huge job to change over the x-sim plugin at a later date? Is there anything that could be done to make it easier on your side?

I was only suggesting using an mmf so that the sim only has to service one dll and the other calling apps can poll it at their own rate. Was thinking this might be better for the kart sim software in terms of efficiency so that it will not lower it's performance. It's also a safer option in case somebody writes a bad plugin.

Yep I agree on some of that but this quote from the developer lead me to what I was suggesting:

Please note that all function calls are blocking, so control should be returned to simulation as soon as possible to avoid framerate issues.

I can suggest that change over on the other forum if you like? You are 100% right, not ideal.

Awesome! Great stuff. I will relay these issues over in the other forum and see what they say.

This is the reply from the KRP developer:

Please check that structure alignment for DLL compilation is set at 8 bytes.

Only acceleration is averaged over the latest 40ms. All other values are unfiltered.

Sorry for the delay in testing. I will get to it soon. There are people playing this game but we need to remember the game is in the beta stage. It still has the best physics of all kart sims to date.

I have been testing the sim data myself with some hardware I'm working on and I have also noticed the delay. I will try and get the dev to look at this.

Thanks for looking into it sirnoname. I guess you don't know till u try.

I use it, too. It's great, and there are some selfmade tracks that make fun either... It's a private project, so I am not sure if development is still made but so far it is the best kart sim out there...