Read all Waypoints from player flight plan

[alberto2000]

Using SimConnect, "AI Waypoint List" seems to be the equivalent for AI but how to get a list of all waypoints from the players flight plan? Or is there another approach? I need to put markers on a map for each waypoint so I need lat/lon for each of them.

Thanks!

 

[alberto2000]

Anyone? Isn't this possible at all?

 

[DragonflightDesign]

XML? C? It's dead easy in a C-gauge but I don't think it can be done in XML.

 

[alberto2000]

@DragonflightDesign sorry but I'm only used to SimConnect... how can I read data from XML files? Which XML files? Or how would you do it in C? Where would you read it from?

Can you point me in a direction?

 

[DragonflightDesign]

If you're using SimConnect then you must be using C or C++. SimConnect will give you the name of the current flightplan. Once you know that, you can open the flightplan using fopen_s etc. and parse out the lines in the flightplan. The waypoint lines all start 'waypoint.X='. After that, you can parse the line using strtok and chr(44) to break it up into sections..

 

[alberto2000]

@DragonflightDesign so you need to read thoss XML files directly from the file system? Where are those located? Isn't it possible to do this completely over SimConnect?

 

[WarpD]

No SimConnect does not expose the entire flight plan... unless they added new variables for that. Maybe checking the variable list in the SDK?

 

[alberto2000]

Ok thanks. Can you point me towards resources / documentation on where to find those XML files? Is there a way to read the user's FS install directory on disk?

The SimConnect variables list doesn't seem to inlcude infos about ALL waypoints, only on the current one, next one and prev one: https://docs.microsoft.com/en-us/pr...t-esp/cc526981(v=msdn.10)?redirectedfrom=MSDN

 

[WarpD]

There is no documentation regarding the flight plan files. Where FS is installed is found from a registry entry, do a search of FSDevelolper for the install directory/folder.

 

[DragonflightDesign]

How to get the sim type:

int simVer=0;                                    // FS version 9 = FS9, 10 = FSX, 8 = P3D
//**************************************************************************
//Get simulator version
//**************************************************************************
void getSimVer()
{
    WIN32_FIND_DATA ffd; // file information struct
    HANDLE sh;
    char searchPath[32];

    strncpy(searchPath,"prepar3d.exe\0",13);
    sh=FindFirstFile(searchPath,&ffd);
    if(sh==INVALID_HANDLE_VALUE)
    {
        strncpy(searchPath,"fsx.exe\0",8);
        sh=FindFirstFile(searchPath,&ffd);
        if(sh==INVALID_HANDLE_VALUE)
        {
            strncpy(searchPath,"fs9.exe\0",8);
            sh=FindFirstFile(searchPath,&ffd);
            if(sh==INVALID_HANDLE_VALUE)simVer=-1;
            else simVer=9;
        }
        else simVer=10;
    }
    else simVer=8;                // Random designator for Prepar3D
    return;
}

 

[DragonflightDesign]

How to find the sim installtion path:

//**************************************************************************
// Get simulator path - preceed by getSimVer() to ensure the version is set
//**************************************************************************
void getSimPath()
{
    char szFileName[MAX_PATH];
    int ret = 0;

    if (simVer != 8 && simVer != 9 && simVer != 10)getSimVer();

    ret = GetModuleFileName(NULL, szFileName, MAX_PATH);
    if (simVer == 8)getLeft(szFileName, simPath, ret - 13);    // Prepar3D.exe
    else getLeft(szFileName, simPath, ret - 8);                        // FSX / FS9

    return;
}

Support function getLeft(). (Ed will probably hate this )

void getLeft(char *fullString,char *leftChars,int noChars)
{
    int x=0;
    int StringLength=0;

// Sanity check
    if (fullString != NULL && leftChars != NULL && noChars)
    {
        StringLength=(int)strlen(fullString);
        //Ensure that we don't try to return more characters than actually exist
        if (noChars > StringLength)noChars = StringLength;
        //Get Left
        for (x = 0; x < noChars; x++)
            *leftChars++ = *fullString++;
        // Terminate the string
        *leftChars++ = '\0';
    }
    return;
}

You can get the path to the user's flight files/flightplans by using the SimConnect call:

void OnRecvSystemState(SIMCONNECT_RECV_SYSTEM_STATE *pData)
{
    if (pData->dwRequestID)
    {
        switch (pData->dwRequestID)
        {
            case REQUEST_FLIGHT_LOADED:
                strncpy_s(CURRENT_FLIGHT, MAX_PATH, pData->szString, sizeof(pData->szString));
            break;
        }
    }
}

Remove the name of the flight from the end of CURRENT_FLIGHT and you have the path.