/* Speed Anticheat

                by XStormiest


    So how this script works, is very simple, it's based on some-kind of AI algorithm that detecks max Speed and checks for any anomally in the speed.


*/
#define ANOMALLY 200
#include <a_samp>
new Float: MaxSpeed[MAX_PLAYERS][212][100];
new K[MAX_PLAYERS][212];
new Anomally = ANOMALLY;
new CheckSpeedTimer;

stock GetPlayerSpeed(playerid, bool:kmh) // by misco
{
  new Float:Vx,Float:Vy,Float:Vz,Float:rtn;
  if(IsPlayerInAnyVehicle(playerid)) GetVehicleVelocity(GetPlayerVehicleID(playerid),Vx,Vy,Vz); else GetPlayerVelocity(playerid,Vx,Vy,Vz);
  rtn = floatsqroot(floatabs(floatpower(Vx + Vy + Vz,2)));
  return kmh?floatround(rtn * 100 * 1.61):floatround(rtn * 100);
}

forward CheckVehicles();
public CheckVehicles()
{
    new vehicleid, modelid, Float: speed, bool: hack;
    new name[MAX_PLAYER_NAME], string[256];
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerInAnyVehicle(i))
        {
            hack = false;
            vehicleid = GetPlayerVehicleID(i);
            modelid = GetVehicleModel(vehicleid);
            speed = GetPlayerSpeed(i, true);
            if(speed > MaxSpeed[i][modelid-400][K[i][modelid-400]] && K[i][modelid-400] < 100)
            {
                MaxSpeed[i][modelid-400][K[i][modelid-400]++];
            }
            for(new j = 1; i < K[i][modelid-400]; i++)
            {
                if( (MaxSpeed[i][modelid][j] - MaxSpeed[i][modelid][j-1] ) >= Anomally )
                {
                    hack = true;
                }
            }

            if(hack == true)
            {
                GetPlayerName(i, name, sizeof(name));
                format(string, sizeof(string), "Cheats: %s was detected using a car speed hack!!", name);
                SendClientMessageToAll(-1, string);
                BanEx(i, "Car Speed Hack");
            }
        }

    }
    return 1;
}

public OnFilterScriptInit()
{
    CheckSpeedTimer = SetTimer("CheckVehicles", 1000, true);
    return 1;
}

public OnFilterScriptExit()
{
    KillTimer(CheckSpeedTimer);
    return 1;
}

public OnPlayerConnect(playerid)
{
    for(new i = 0; i < 212; i++)
    {
        for(new j = 0; j < 100; j++)
            MaxSpeed[playerid][i][j] = 0;
        K[playerid][i] = 0;
    }
    return 1;
}