I posed the question to Graham Oxtoby - part of the FSDS2 "inside team" and frequent poster at the FFDS Forum .. his site, Simcraft 3D, also has a bunch of FSDS2 tutorials...
Hi Felix,
A red line as requested by this designer can be designed without tags.
Simply create the laser beam using the transparent box and tag it with the
Dark SDL macro or is this too simple? It would show up in the correct
position when light falls and you wouldn't need time settings. On the other
hand, timer settings can be done with variables attached to the objects
visibility. If it needs to be used as an active line, i.e. actually
displaying the artificial horizon, then an XML gauge would be your best bet.
This could be on the settings of any of the standard gauges in FS, but be
preferably based on an existing XML gauge (black out all but the horizon
line and background reference. Another option is to use an existing HUD
gauge but to turn the green to a luminous red color.
Another option would be to use the aileron and elevator tags in FSDS,
possibly with the elevon tags too. Two vertical lines on the left and right
side of a static horizontal line could be animated so that you get more or
less the same effect...one line would go down as the other goes up in
relation to the static horizontal line. Linked to the elevator tag, you
could also have them follow an upward and downward motion as the planes
climbs, decends and banks to left or right. This is optical illusion of
course, since the horizontal line would be static.
These are just a few ideas....
cheers
Graham