[SCR] jASH(v2).

/*
    Author: Johurt(ES.^, Edgar).
    Date: 15-01-2013.
    Video: http://www.youtube.com/watch?v=2MQDDcyU-jw
*/

#include <a_samp>

#define R_SPEED     50
#define R_TIME      200
#define R_MIN_SPEED     500

new rSpeed[MAX_PLAYERS], rSpeedTimer[MAX_PLAYERS];

public OnPlayerConnect(playerid)
{
    rSpeedTimer[playerid] = -5;
    return 1;
}

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(GetPlayerState(playerid) == PLAYER_STATE_DRIVER && !IsPlayerNPC(playerid) && rSpeedTimer[playerid] == -5)
    {
        rSpeed[playerid] = GetVehicleSpeed(GetPlayerVehicleID(playerid));
        if(rSpeed[playerid] > R_MIN_SPEED) rSpeedTimer[playerid] = SetTimerEx("CheckSpeed", R_TIME, false, "d", playerid);
    }
    return 1;
}

forward CheckSpeed(playerid);
public CheckSpeed(playerid)
{
    if(IsPlayerNPC(playerid) || !IsPlayerConnected(playerid) || GetPlayerState(playerid) != PLAYER_STATE_DRIVER) return 1;
    new nSpeed = GetVehicleSpeed(GetPlayerVehicleID(playerid)), str[78];
    rSpeedTimer[playerid] = -5;
    if(rSpeed[playerid] - R_SPEED > nSpeed)
    {
        format(str, 77, "Old speed: {d4650b}%d {ffffff}km/h, New speed: {d4650b}%d {ffffff}km/h.", rSpeed[playerid], nSpeed);
        SendClientMessage(playerid, -1, str);
        SendClientMessage(playerid, -1, "Don't use cheats!");
    }
    return 1;
}

stock GetVehicleSpeed(vehicleid)
{
    new Float:spd[4];
    GetVehicleVelocity(vehicleid, spd[0], spd[1], spd[2]);
    spd[3] = floatsqroot(floatpower(floatabs(spd[0]), 2.0) + floatpower(floatabs(spd[1]), 2.0) + floatpower(floatabs(spd[2]), 2.0)) * 170.3;
    return floatround(spd[3]);
}