The file traffic/lvnlvariables.py contains a class (LVNLVariables) which contains LVNL specific variables. This class is initialized in the traffic/traffic.py file as lvnlvars. Therefore in the code, these variables can be accessed with bs.traf.lvnlvars.variable_name.

Adding Variables

If you would like to add an LVNL specific variable, you can just add it in the initialize method within the class (the length of the array/list is automatically changed when an aircraft is created/deleted):

def __init__(self):

    ...

    with self.settrafarrays():

        ...

        self.variable_name = ...

        ...

If you would give the variable a default value for new aircraft, you can add this in the create method within the class:

def create(self, n=1):

    ...

    self.variable_name[-n:] = ...

    ...

If you would like to be able to change the variable with a command, you can create a method within the class and use the stack.command() decorator:

@stack.command(name='COMMAND_NAME')
def setvariable_name(self, idx: 'acid', ...)
    self.variable_name[idx] = ...

When a variables needs to be updated over a specific interval, you can add this to the udpate method. In this example the method is called every 0.1 seconds, but this can be changed (dt=...).

@timed_function(name='lvnlvars', dt=0.1)
def update(self)

    ...

    self.variable_name = ...

    ...

Commands

Command	Arguments	Description	File
ARR	CALLSIGN ARRIVAL/STACK (ADDWPTS)	Set the arrival/stack	traffic/lvnlvariables.py
FLIGHTTYPE	CALLSIGN TYPE	Set the flight type	traffic/lvnlvariables.py
FIRSTWP	CALLSIGN WAYPOINT	SET FIRST WAYPOINT IN FMS	traffic/lvnlvariables.py
POSLABEL	CALLSIGN POSLABEL	Set the position of the track label	traffic/lvnlvariables.py
MICROLABEL	CALLSIGN	Show/Hide the micro label	traffic/lvnlvariables.py
REL	CALLSIGN	Release command	traffic/lvnlvariables.py
RWY	CALLSIGN RUNWAY	Set the runway	traffic/lvnlvariables.py
INTERCEPT	CALLSIGN (RUNWAY,DEST,HDG)	Intercept runway with current Autopilot Heading	traffic/lvnlvariables.py
SID	CALLSIGN SID (ADDWPTS)	Set the SID	traffic/lvnlvariables.py
SSR	CALLSIGN SSR	Set the SSR code	traffic/lvnlvariables.py
SSRLABEL	CALLSIGN	Show/Hide mode in SSR label	traffic/lvnlvariables.py
TRACKLABEL	CALLSIGN	Show/Hide the track label	traffic/lvnlvariables.py
SETCLR	GROUP COLOR/(R,G,B)	Set the color of a group	traffic/lvnlvariables.py
SETTRAILCOLOR	CALLSIGN COLOR/(R,G,B)	Set the color of an aircraft (by making its own distinct group)	traffic/lvnlvariables.py
UCO	CALLSIGN	Under control command	traffic/lvnlvariables.py
WTC	CALLSIGN WTC	Set the wake turbulence category	traffic/lvnlvariables.py
SYMBOL	CALLSIGN SYMBOL	Set the responsible flight officer	traffic/lvnlvariables.py