20 Minutes Timer TextDraw - Countdown

//At top of your script.
new Time, TimeM, TimeS;
new Text:Textdraw0;


//OnFilterScriptInit/OnGameModeInit
Textdraw0 = TextDrawCreate(17.000000, 429.000000, "20:00");
TextDrawBackgroundColor(Textdraw0, 65535);
TextDrawFont(Textdraw0, 1);
TextDrawLetterSize(Textdraw0, 0.500000, 1.000000);
TextDrawColor(Textdraw0, 16777215);
TextDrawSetOutline(Textdraw0, 1);
TextDrawSetProportional(Textdraw0, 1);
TimeM = 20;
TimeS = 0;
Time = SetTimer("UpdateTime", 1000, true);


//OnPlayerConnect
TextDrawShowForPlayer(playerid, Textdraw0);


//On Bottom of your script.
forward UpdateTime();
public UpdateTime()
{
  new Str[34];
  TimeS --;
  if(TimeM == 0 && TimeS == 0)
  {
    KillTimer(Time);
  }
  if(TimeS == -1)
  {
    TimeM--;
    TimeS = 59;
  }
  format(Str, sizeof(Str), "%02d:%02d", TimeM, TimeS);
  TextDrawSetString(Textdraw0, Str);
  return 1;
}