MW3 OnplayerSpawn() C++

//Source: http://www.nextgenupdate.com/forums/modern-warfare-3-mods-patches-tutorials/763141-c-1-24-onplayerspawned.html

void onPlayerSpawned()
{
    for(;;)
    {
        for(int i = 0; i < 18; i++)
        {
            if(*(int*)(G_Client(i) + 0x3980) == 0x00)
            {
                if(!WelcomeDisplayed[i])
                {
                    sleep(250);
                    /*
                    Things you want on spawn here
                    */
                    WelcomeDisplayed[i] = true;
                }
            }
            else
                WelcomeDisplayed[i] = false;
        }
    }
}


int G_Client(int client)
{
    return (0x0110A280 + (0x3980* client));
}