Method launchSteamDFHackIfNecessary

library/modules/DFSteam.cpp:240–269

#endif

void DFSteam::launchSteamDFHackIfNecessary(color_ostream& out) {
    if (!g_steam_initialized ||
            !g_SteamAPI_GetHSteamUser ||
            !g_SteamInternal_FindOrCreateUserInterface ||
            !g_SteamAPI_ISteamApps_BIsAppInstalled) {
        DEBUG(dfsteam, out).print("required Steam API calls are unavailable\n");
        return;
    }

    const std::string & cmdline = df::global::game->command_line.original;
    if (cmdline.find("--nosteam-dfhack") != std::string::npos) {
        WARN(dfsteam, out).print("--nosteam-dfhack specified on commandline; not launching DFHack coprocess\n");
        return;
    }

    void* iSteamApps = g_SteamInternal_FindOrCreateUserInterface(g_SteamAPI_GetHSteamUser(), "STEAMAPPS_INTERFACE_VERSION008");
    if (!iSteamApps) {
        DEBUG(dfsteam, out).print("cannot obtain iSteamApps interface\n");
        return;
    }

    bool isDFHackInstalled = g_SteamAPI_ISteamApps_BIsAppInstalled(iSteamApps, DFHACK_STEAM_APPID);
    if (!isDFHackInstalled) {
        DEBUG(dfsteam, out).print("player has not installed DFHack through Steam\n");
        return;
    }

    bool ret = launchDFHack(out);
    DEBUG(dfsteam, out).print("launching DFHack via Steam: {}\n", ret ? "successful" : "unsuccessful");
}