[grand.Theft.Otto]

Follow the // commented lines:

pawn Код:

// Defining KEY_AIM (right mouse button), as it is not defined in the SA-MP includes)

// place at the top of your script:

#define KEY_AIM     (128)

// Under OnPlayerKeyStateChange

if(newkeys == KEY_AIM && newkeys == KEY_SECONDARY_ATTACK) // i think KEY_AIM is RMB and SECONDARY_ATTACK is the F key
{
    // tazer code here
    return 1;
}

Try it.