Countdown System

//
//      Released by Good3nough Team
//      Created by [G3]Gunn3R
//      Scripted by [G3]Cr3F
//      Helped by [G3]Winn3R and [G3]RDxX
//

#include <a_samp>

#define dcmd(%1,%2,%3) if ((strcmp((%3)[1], #%1, true, (%2)) == 0) && ((((%3)[(%2) + 1] == 0) && (dcmd_%1(playerid, "")))||(((%3)[(%2) + 1] == 32) && (dcmd_%1(playerid, (%3)[(%2) + 2]))))) return 1

new Counting;

public OnFilterScriptInit()
{
    print("\n--------------------------------------");
    print(" Countdown Filterscript by Good3nough Team");
    print("--------------------------------------\n");
    return 1;
}

public OnPlayerCommandText(playerid, cmdtext[])
{
        dcmd(count, 5, cmdtext);
        return 0;
}

dcmd_count(playerid, params[])
{
        if (!strlen(params)) return SendClientMessage(playerid, 0xffffffaa, "USAGE: /count [amount]");
        if (!IsNumeric(params)) return SendClientMessage(playerid, 0xffffffaa, "The amouny param must be numerical.");
        if (strval(params) < 1 || strval(params) > 10) return SendClientMessage(playerid, 0xffffffaa, "The amount should be 0 < amount <= 10");
        if (Counting) return SendClientMessage(playerid, 0xffffffaa, "A Countdown is already running, wait until this has finished.");
        Counting = true;
        new ii = strval(params);
        do
        {
            SetTimerEx("CountDown", (strval(params) - ii) * 1000, false, "i", ii);
            ii --;
        }
        while (ii != -1);

        new Name[32];
        new string[256];
        GetPlayerName(playerid, Name, 24);
        format(string, sizeof(string), "* %s has started the Countdown.", Name);
        SendClientMessageToAll(0xffffffaa, string);
        return 1;
}

forward CountDown(num);
public CountDown(num)
{
        new str[6];
        if (num) {format(str, sizeof(str), "~w~%i", num); GameTextForAll(str, 1000, 4); }
        else {GameTextForAll("~g~Go", 3000, 4); Counting = false; }
}

IsNumeric(const string[])
{
        for (new i = 0, j = strlen(string); i < j; i++)
            if (string[i] > '9' || string[i] < '0') return 0;
        return 1;
}