Zezombia

/*------------------------*\
| Maths script by Zezombia |
\*------------------------*/

#include <a_samp>

#define yellow 0xFFFF00AA
#define red 0xFF0000AA
#define green 0x33FF33AA

forward Maths();

new answer;
new answered;
new score;
new timer;
new timerset;

public OnPlayerCommandText(playerid, cmdtext[])
{
    new cmd[256], idx;
    cmd = strtok(cmdtext, idx);

    if (strcmp("/answer", cmd, true) == 0)
    {
        new tmp[256], cmdid, string[256], pname[MAX_PLAYER_NAME];
        tmp = strtok(cmdtext, idx);
        if(!strlen(tmp)) return SendClientMessage(playerid, red, "USAGE: /Answer [answer]");
        cmdid = strval(tmp);

        if(cmdid < answer || cmdid > answer)
        {
            SendClientMessage(playerid, red, "Wrong answer!");
        }

        if(cmdid == answer && answered == 0)
        {
            GetPlayerName(playerid, pname, sizeof(pname));

            format(string, sizeof(string), "%s has won %d score for answering the math question '%d'!", pname, score, cmdid);
            SendClientMessageToAll(green, string);
            GivePlayerMoney(playerid, 10000);

            answered = 1;
            SetPlayerScore(playerid, GetPlayerScore(playerid) + score);
            score = 0;
            return 1;
        }
        else if(cmdid == answer && answered == 1)
        {
            SendClientMessage(playerid, red, "To late!");
        }
        return 1;
    }

    if (strcmp("/startmaths", cmd, true) == 0)
    {
        if(IsPlayerAdmin(playerid) == 0) return SendClientMessage(playerid, red, "You are not an RCON admin");

        new tmp[256], cmdid, string[256];
        tmp = strtok(cmdtext, idx);
        if(!strlen(tmp)) return SendClientMessage(playerid, red, "USAGE: /Startmaths [timer (seconds)]");
        cmdid = strval(tmp);

        KillTimer(timer);
        timerset = cmdid * 1000;
        timer = SetTimer("Maths", timerset, 1);

        format(string, sizeof(string), "Maths started, timer set to every %d seconds", cmdid);
        SendClientMessage(playerid, yellow, string);
        return 1;
    }

    if (strcmp("/stopmaths", cmd, true) == 0)
    {
        if(IsPlayerAdmin(playerid) == 0) return SendClientMessage(playerid, red, "You are not an RCON admin");

        KillTimer(timer);
        SendClientMessage(playerid, yellow, "Maths stopped");
        return 1;
    }
    return 0;
}

public Maths()
{
    new string[256], addsubtext1[10], addsubtext2[10];

    new temp1;

    new number1 = random(100);
    new number2 = random(100);
    new number3 = random(100);
    new addsubnumb1 = random(2);
    new addsubnumb2 = random(2);

    if(addsubnumb1 == 0)
    {
        score = score + 10;

        format(addsubtext1, sizeof(addsubtext1), "-");
        temp1 = number1 - number2;
    }
    else if(addsubnumb1 == 1)
    {
        score = score + 5;

        format(addsubtext1, sizeof(addsubtext1), "+");
        temp1 = number1 + number2;
    }

    if(addsubnumb2 == 0)
    {
        score = score + 10;

        format(addsubtext2, sizeof(addsubtext2), "-");
        answer = temp1 - number3;
    }
    else if(addsubnumb2 == 1)
    {
        score = score + 5;

        format(addsubtext2, sizeof(addsubtext2), "+");
        answer = temp1 + number3;
    }

    format(string, sizeof(string), "MATHS: %d%s%d%s%d - /answer to answer this question! Worth %d score!", number1, addsubtext1, number2, addsubtext2, number3, score);
    SendClientMessageToAll(yellow, string);

    answered = 0;
    return 1;
}

strtok(const string[], &index)
{
    new length = strlen(string);
    while ((index < length) && (string[index] <= ' '))
    {
        index++;
    }

    new offset = index;
    new result[20];
    while ((index < length) && (string[index] > ' ') && ((index - offset) < (sizeof(result) - 1)))
    {
        result[index - offset] = string[index];
        index++;
    }
    result[index - offset] = EOS;
    return result;
}