// C++
float floatmul(float v, float c)
{
    return (v*c);
}
float floatsub(float v, float c)
{
    return (v-c);
}
float floatadd(float v, float c)
{
    return (v+c);
}
float retDriftAngle(int playerid)
{
    int vehicleid = GetPlayerVehicleID(playerid);

    float
        v[3],
        a[3];
    GetVehicleVelocity(vehicleid, &v[0], &v[1], &v[2]);
    GetVehicleZAngle(vehicleid, &a[0]);
    if(floatmul(sqrt(floatadd(floatadd(pow(v[0], 2), pow(v[1], 2)), pow(v[2], 2))), 181.5) < 20.0f) return 0.0f;
    a[0] = (a[0] >= 360.0f) ? (floatsub(a[0], 360.0f)) : (a[0] < 0.0f) ? (floatadd(a[0], 360.0f)) : (a[0]);
    a[0] = (a[0] > 180.0f) ? (floatsub(0.0f, floatsub(360.0f, a[0]))) : (a[0]);
    a[1] = floatsub(atan2(v[1], v[0]), 90.0f);
    a[1] = (a[1] >= 360.0f) ? (floatsub(a[1], 360.0f)) : (a[1] < 0.0f) ? (floatadd(a[1], 360.0f)) : (a[1]);
    a[1] = (a[1] > 180.0f) ? (floatsub(0.0f, floatsub(360.0f, a[1]))) : (a[1]);
    a[2] = abs(floatsub(a[0], a[1]));
    a[2] = (a[2] > 180.0f) ? (floatsub(a[2], 180.0f)) : (a[2]);
    return (a[2] >= 90.0f) ? (floatsub(180.0f, a[2])) : (a[2]);
}

////// *** PAWN //////

    new vehicleid = GetPlayerVehicleID(playerid);
    if(vehicleid == INVALID_VEHICLE_ID || !vehicleid) return 0.0;
    new Float:v[3], Float:a[3];
    GetVehicleVelocity(vehicleid, v[0], v[1], v[2]); GetVehicleZAngle(vehicleid, a[0]);
    if(floatmul(floatsqroot(floatadd(floatadd(floatpower(v[0], 2), floatpower(v[1], 2)), floatpower(v[2], 2))), 181.5) < 20.0) return 0;
    a[0] = (a[0] >= 360.0) ? (floatsub(a[0], 360.0)) : (a[0] < 0.0) ? (floatadd(a[0], 360.0)) : (a[0]);
    a[0] = (a[0] > 180.0) ? (floatsub(0.0, floatsub(360.0, a[0]))) : (a[0]);
    a[1] = floatsub(atan2(v[1], v[0]), 90.0);
    a[1] = (a[1] >= 360.0) ? (floatsub(a[1], 360.0)) : (a[1] < 0.0) ? (floatadd(a[1], 360.0)) : (a[1]);
    a[1] = (a[1] > 180.0) ? (floatsub(0.0, floatsub(360.0, a[1]))) : (a[1]);
    a[2] = floatabs(floatsub(a[0], a[1]));
    a[2] = (a[2] > 180.0) ? (floatsub(a[2], 180.0)) : (a[2]);
    return (a[2] >= 90.0) ? (floatsub(180.0, a[2])) : (a[2]);