forward CountDive(playerid);
new countdivecount;

public CountDive(playerid)
{
    countdivecount--;
    new string[256];
    for(new i = 0; i <= MAX_PLAYERS; i++)
    {
     if(IsPlayerConnected(i))
     {
      format(string, sizeof(string), "%d",countdivecount);
     }
     GameTextForPlayer(i, string, 1000, 6);
    }
}

[b]В OnPlayerCommandText[/b]

    if(strcmp(cmd, "/schet", true) == 0)
    {
     tmp = strtok(cmdtext, idx);
     if(!strlen(tmp))
     {
      SendClientMessage(playerid, COLOR_GRAD2, " пиши: /schet [1] [2] [3] [4]");
      return 1;
     }
     new para1;
     new para2;
     new para3;
     new para4;
     para1 = strval(tmp);
     tmp = strtok(cmdtext, idx);
     para2 = strval(tmp);
     tmp = strtok(cmdtext, idx);
     para3 = strval(tmp);
     tmp = strtok(cmdtext, idx);
     para4 = strval(tmp);
     if(countdivecount <= 0)
     {
      countdivecount = 30;
      cdive = SetTimerEx("CountDive", 1000, 1, "playerid");
      if (IsPlayerConnected(para1)) { CountDive(para1); }
      if ((IsPlayerConnected(para2)) && (para2>0)) { CountDive(para2); }
      if ((IsPlayerConnected(para3)) && (para3>0)) { CountDive(para3); }
      if ((IsPlayerConnected(para4)) && (para4>0)) { CountDive(para4); }
     }
     else
     {
      SendClientMessage(playerid, COLOR_GRAD1, "    отсчет уже существует");
     }
     return 1;
    }