[Kitten]

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pawn Код:

#define PRESSED(%0) \
    (((newkeys & (%0)) == (%0)) && ((oldkeys & (%0)) != (%0)))

pawn Код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if (PRESSED(KEY_HANDBRAKE)) 
    {
        new Float:x, Float:y, Float:z;
    GetVehicleVelocity(GetPlayerVehicleID(playerid), x, y, z);
    SetVehicleVelocity(GetPlayerVehicleID(playerid) ,x ,y ,z+0.3);
    }
    return 1;
}

this makes when u press handbrake it jumps ur car 10 feet in air