[Virtual1ty]

Here's what I use in my GM to get the vehicle speed in both MPH and KPH (please note that I use a player variable which holds that information, so I only use one of the two), and I'd say its enough optimized, and precise for what I use it to.

pawn Код:

#define MPH_KMH 1.609344

stock GetVehicleSpeed( vehicleid )
{
    // Function: GetVehicleSpeed( vehicleid )
    
    new
        Float:x,
        Float:y,
        Float:z,
        vel;

    GetVehicleVelocity( vehicleid, x, y, z );

    vel = floatround( floatsqroot( x*x + y*y + z*z ) * 180 );           // KM/H
//  vel = floatround( floatsqroot( x*x + y*y + z*z ) * 180 / MPH_KMH ); // MPH

    return vel;
}