create HUD

[alexcherpi]

Hi all,

I run flightgear 3.4 on windows7.
Can you give me the steps to create a simple HUD ?
I want to display some texte in it in real-time.

Thanks

[Necolatis]

I think a good place to start is

http://wiki.flightgear.org/Head-up_display

and

http://mapserver.flightgear.org/git/?p= ... ud;hb=HEAD

You basicly create a hud.xml file, place it in your aircraft folder somewhere, and refer to it from the aircrafts .-set.xml file inside the <sim> tags.

sorta like this:

<hud>
<path n="1">Aircraft/myPlane/Systems/hud.xml</path>
</hud>

[AndersG]

If you don't specifically want a HUD, but just want to permanently display some properties on the screen you can use the Nasal screen class:

Add to the <nasal> element in the -set file:

Code: Select all

 <nasal>

  <OSD>
   <script>
# On-screen displays
var left  = screen.display.new(20, 10);
var right = screen.display.new(-300, 10);

# Add some properties to display
left.add("/fdm/jsbsim/sim-time-sec");
left.add("/orientation/heading-magnetic-deg");
left.add("/fdm/jsbsim/hydro/beta-deg");
left.add("/fdm/jsbsim/hydro/pitch-deg");
left.add("/fdm/jsbsim/hydro/roll-deg");

right.add("/fdm/jsbsim/hydro/v-kt");
right.add("/fdm/jsbsim/hydro/vbx-fps");
right.add("/fdm/jsbsim/hydro/vby-fps");
right.add("/fdm/jsbsim/propulsion/boiler/steam-absolute-pressure-psi");
right.add("/fdm/jsbsim/propulsion/engine/steam-mean-pressure-psi");
right.add("/fdm/jsbsim/propulsion/engine/power-available-hp");
right.add("/fdm/jsbsim/propulsion/engine/power-required-hp");
right.add("/fdm/jsbsim/propulsion/engine/engine-rpm");
right.add("/fdm/jsbsim/propulsion/engine/advance-ratio");
right.add("/fdm/jsbsim/propulsion/engine/thrust-lbs");
right.add("/fdm/jsbsim/propulsion/engine/shaft-position-norm");

   </script> 
  </OSD>

 </nasal>


(The properties above are just examples and many only exist in a particular aircraft, uh, ship.)

If you only want to see the properties in some specific views that can also be done, e.g. by using a view handler. See e.g. my Short Empire aircraft.

/Anders

[acherpil]

Hi,

Thanks, I resolved it using HUD. I created a new customized one for me.

Alex