RE: [Jsbsim-devel] Property list

[Jon B. <js...@ha...>]

> This is a hacked up version of JSBSim.cpp, but it contains the code you
> need.  See lines 211-221.
>
> Oh, you must link to the simgear libs sgmisc, sgxml, and probably
> sgdebug too.   This brings in the XML reading and writing code,
> which we don't use in JSBSim.

This seems to work, too:

 grep Untie *.cpp | cut -d\" -f2

There's got to be an easier way, perhaps to traverse the JSBSim property
tree if a hypothetical option --properties is given?

==

I reworked the script/c1722.xml script to use the c172x instead of the
c172r. This will prevent inadvertent mods during testing of the switching
code. I noticed this in the autopilot section of the log output at
startup:

 Loading Component "Roll A/P Aileron Command Normalizer" of type:
PURE_GAIN
   INPUT: roll-ap-error-summer
   GAIN: -1.0000
   OUTPUT: aileron_cmd
   MIN: 0.0000
   MAX: 0.0000

Then, further down, was this in the FCS section:

 Loading Component "Roll Trim Sum" of type: SUMMER
   INPUTS:
    aileron-cmd-norm
    roll-trim-cmd-norm
   CLIPTO: -1.0000, 1.0000

I suppose if I wanted the autopilot to control roll I would need to do one
of two things:

1) Add aileron_cmd as an input to the Roll Trim Sum component, or
2) Change the aileron-cmd-norm input in the Roll Trim Sum component to
refer instead to aileron_cmd.

True?