[mansonh]

pawn Код:

new Tmin = 0; Thour = 00;

...
new cdTimer = SetTimer("countdown", 1000, 1);
...

public countdowntimer()
{
  Tmin--;
  if(Tmin < 0) Thour--, Tmin=59;
  if(Thour < 0)
  {
    KillTimer(cdTimer);
    ...do whatever you do when timer runs out
    return 1;
  }
  //set your textdraw to the new time and reshow for players
}