[FS] Sistema de GPS Avançado

/*VISITE NOSSO SITE: http://www.sampknd.com/
  SAMP KND MELHOR BLOG DE SAMP DO BRASIL
*/

#include <a_samp>
new GPSTimer[MAX_PLAYERS];
new bool:HaveGPS[MAX_PLAYERS];

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;
}

stock GetDistanceBetweenPlayers(playerid,playerid2){
    new Float:x1,Float:y1,Float:z1,Float:x2,Float:y2,Float:z2;
    new Float:dis;
    GetPlayerPos(playerid,x1,y1,z1);
    GetPlayerPos(playerid2,x2,y2,z2);
    dis = floatsqroot(floatpower(floatabs(floatsub(x2,x1)),2)+floatpower(floatabs(floatsub(y2,y1)),2)+floatpower(floatabs(floatsub(z2,z1)),2));
    return floatround(dis);
}

forward GPSUpdate(playerid,playerid2);
public GPSUpdate(playerid,playerid2){
    if(IsPlayerConnected(playerid2)){
        new Float:Distnace;
        Distnace = GetDistanceBetweenPlayers(playerid,playerid2);
        new Float:X,Float:Y,Float:Z;
        GetPlayerPos(playerid2,X,Y,Z);
        DisablePlayerCheckpoint(playerid);
        SetPlayerCheckpoint(playerid,X,Y,Z,0.1);
        new string[128];
        format(string, sizeof(string), "~n~~n~~n~~n~~n~~n~~n~~n~~p~Distancia: ~r~%.1f ~y~m",Distnace);
        GameTextForPlayer(playerid, string, 1100, 5);
        if(Distnace <= 4.0) {
            DisablePlayerCheckpoint(playerid);
            KillTimer(GPSTimer[playerid]);
            HaveGPS[playerid] = false;
            GPSTimer[playerid] = 0;
        }
    }else{
        DisablePlayerCheckpoint(playerid);
        KillTimer(GPSTimer[playerid]);
        HaveGPS[playerid] = false;
        GPSTimer[playerid] = 0;
        SendClientMessage(playerid, 0xFF0000AA, "GPS: Não encontrado.");
    }
    return 1;
}

public OnFilterScriptInit()
{
    print("\n* GPS by Jefff carregado...\n");
    return 1;
}

public OnFilterScriptExit()
{
    print("\n* GPS by Jefff desligado...\n");
    return 1;
}

public OnPlayerConnect(playerid)
{
    GPSTimer[playerid] = 0;
    HaveGPS[playerid] = false;
    SendClientMessage(playerid, 0xFFFFFFAA, "Este servidor usa um sistema de GPS feito por Jefff (/gps)");
    return 1;
}

public OnPlayerDisconnect(playerid, reason)
{
    if(HaveGPS[playerid]) {
        KillTimer(GPSTimer[playerid]);
        HaveGPS[playerid] = false;
        GPSTimer[playerid] = 0;
    }
    return 1;
}

public OnPlayerDeath(playerid, killerid, reason)
{
    if(HaveGPS[playerid]) {
        KillTimer(GPSTimer[playerid]);
        HaveGPS[playerid] = false;
        GPSTimer[playerid] = 0;
    }
    return 1;
}

public OnPlayerCommandText(playerid, cmdtext[])
{
    new cmd[64],tmp[64],idx;
    cmd = strtok(cmdtext,idx);
    if(!strcmp(cmd, "/gps", true))
    {
        tmp = strtok(cmdtext,idx);
        if(!strlen(tmp)) return SendClientMessage(playerid, 0xFFFFFFAA, "Use: /gps [playerid / off]");
        if(!strcmp(tmp, "off", true)) {
            if(HaveGPS[playerid]) {
                KillTimer(GPSTimer[playerid]);
                HaveGPS[playerid] = false;
                GPSTimer[playerid] = 0;
                DisablePlayerCheckpoint(playerid);
                SendClientMessage(playerid, 0xFFFF00AA, "GPS: Desligado.");
            }else SendClientMessage(playerid, 0xFF0000AA, "GPS: Seu GPS está desligado !");
            return 1;
        }
        if(IsPlayerConnected(strval(tmp))) {
            if(strval(tmp) != playerid) {
                if(HaveGPS[playerid]) {
                    KillTimer(GPSTimer[playerid]);
                    HaveGPS[playerid] = false;
                    GPSTimer[playerid] = 0;
                }
                GPSTimer[playerid] = SetTimerEx("GPSUpdate", 500, true, "dd", playerid,strval(tmp));
                HaveGPS[playerid] = true;
                new str[128],nick[24];
                GetPlayerName(strval(tmp),nick,24);
                format(str,128,"GPS: Ligado, alvo: %s (ID: %d)",nick,strval(tmp));
                SendClientMessage(playerid, 0xFFFF00AA, str);
            }else SendClientMessage(playerid, 0xFF0000AA, "GPS: Use corretamente o seu GPS !");
        }else SendClientMessage(playerid, 0xFF0000AA, "GPS: Alvo não encontrado(ID errado) !");
        return 1;
    }
    return 0;
}