[Sinner]

There's been a lot of discussion about what the actual max. speed should be when it comes to SA-MP vehicles. This thread discusses this.

I think, though, I have found the most accurate max. speed possible. As we know, the max. speed of any vehicle can be calculated using the following formula (KM/H):

pawn Код:

// vX = X velocity of the vehicle
// vY = Y velocity of the vehicle
// vZ = Z velocity of the vehicle

STEP1 = vXІ + vYІ + vZІ (Law of Pythagoras)
STEP2 = SQUARE ROOT of STEP 1
STEP3 = STEP2 * magic number

"the magic number" Is the number everyone has been looking for. Some people have proven that around 180.0 should give a fairly accurate result (which makes the max. speed of the Infernus, the fastest vehicle in the game, around 223 KM/H). We will now try to prove this correct.

Fact: Most of the cars in SA-MP are derived from real life vehicles. The Turismo is clearly a Ferrari F40 so we will use this as the base for our calculations.

Ferrari F40:


Turismo:


The max. speed of a Ferrari F40 is equal to 324 KM/H. (Source: http://en.wikipedia.org/wiki/Ferrari_F40)

Running the following code in a very fast loop, we can determine what the highest possible velocity is when a Turismo in SA-MP reaches his max. speed. This was done on a straight road and without nitrous.

pawn Код:

// vid = current vehicle we are in
// Model 451 = Turismo
if(GetVehicleModel(vid) == 451) {
    new 
        Float:speed_x,
        Float:speed_y,
        Float:speed_z
    ;
    GetVehicleVelocity(vid,speed_x,speed_y,speed_z);
    printf("[Velocity] X=%f, Y=%f, Z=%f", speed_x, speed_y, speed_z);
}

We get the following result (these will vary ofcourse, but the calculations will always have the same result):

pawn Код:

X = 1.072348
Y = 0.008095
Z = 0.000000

We can than calculate the magic number when the final speed equals 324:

pawn Код:

XІ = 1.072348 * 1.072348 = 1.149930233104
YІ = 0.008095 * 0.008095 = 0.000065529025
ZІ = 0.000000 * 0.000000 = 0.000000000000

SQUARE ROOT (1.149930233104 + 0.000065529025 + 0.000000000000) = 1.0723785535569983

324 = 1.0723785535569983 * mN

mN = [B]302.13[/B]

So the "magic number" is equal to 302.13 (see test above), this though makes the top speed of the other vehicles out of proportion... A bus suddenly goes over 250KM/H!! I guess this issue is unsolvable and we need to search for an acceptable number somewhere in the middle.