public make_a_zombie(...)
{
    ...

              else
              {
                     // Single Infection Mode
                     g_lastmode = MODE_INFECTION

                     // Turn two players into the first zombie
                     zombieme(id, 0, 0, 0, 0)
                     static id2;       id2 = random_num(1, g_maxplayers)
                     while(id ==id2) id2 = random_num(1, g_maxplayers)
                     zombieme(id2, 0, 0, 0, 0)
              }

    ...
}

public zombieme(...)
{
    ...

    //else if (fnGetZombies() == 1)
    else if (fnGetZombies() <= 2)

    ...
}

do{ id2 = random_num(1, 7); }while(id == id2)

 
if (--iPlayersnum < 2) return; 
static id2; 
do{ 
id2 = fnGetRandomAlive(random_num(1, iPlayersnum)) 
}while(id == id2 || g_zombie[id2]) 

... 

zombieme(...) 
{ 
... 
           else if (fnGetZombies(g_lastmode == MODE_INFECTION) < 2) 
} 

... 

// Get Zombies -returns alive zombies number- 
fnGetZombies(bool:onlyFirst = false) 
{ 
     static iZombies, id 
     iZombies = 0 

     for (id = 1; id <= g_maxplayers; id++) 
     { 
           if (g_isalive[id] && g_zombie[id]) 
           { 
             if (onlyFirst) 
             { 
               if (g_firstzombie[id]) 
                   iZombies++  
             } 
           else 
             iZombies++ 
           } 
     } 

     return iZombies; 
}