We set /environment/metar/description to human-readable description of metar,
for use by fgdata's weather dialogue, using simgear FGMetar's new description()
method.
This allows Tower View etc to use nearest tower when vewing remote multiplayer
aircraft.
Also force an update of nearest airport whenever multiplayer view changes, to
reduce delay before Tower View works.
This is a clean up commit prior to the subsystem API standardisation to simplify
the diffs. It includes all SGSubsystem and SGSubsystemGroup derived classes.
Since the subsystem manager tracks group state, it now binds/inits
automatically. This means groups which create subsystems during init
no longer need to manually bind() them.
Change fgcommand to take an optional property tree root element.
This fixes the animation bindings to use the defined property tree root - to support multiplayer (or other) model that can bind to the correct part of the property tree.
Requires a corresponding fix in sg to allow the command methods to take an optional root parameter.
What this means is that when inside someone else's multiplayer model (e.g. backseat, or co-pilot), the multipalyer (AI) model will correctly modify properties inside the correct part of the property tree inside (/ai), rather than modifying the properties inside the same part of the tree as the non-ai model.
This means that a properly setup model will operate within it's own space in the property tree; and permit more generic multiplayer code to be written.
This is probably responsible for some of the pollution of the root property tree with MP aircraft properties.
In commit 15525aab58, a layer with
lapse=0.0 was added to ISA_def (atmosphere model). However, the last
layer *must* have lapse == -1.0, otherwise the code in PT_vs_hpt()
doesn't know when it's on the last element of ISA_def, and does an
illegal memory access with (pp+1)->height. This is why -1.0 is the
default value for lapse ('l') in the ISA_layer constructor.
Fix: add the -1.0 terminator to the last element of ISA_def.
Compile a useful subset of FG as a shared library, and add two basic
uses of this to exercise some Flightplan / RoutePath / navaid
functions.
The test framework can/will be expanded incrementally from here, this
is just a starting point.
This renders sgGMTime obsolete, it will go away shortly. Thanks to
Ron H for help tracking this down and Richard Harrison for his
knowledge of Windows APIs in confirming the issue.
This includes the moon's absolute position, age and phase. For this, the new
simgear MoonPos::get*() functions are tied to the property tree at
"/ephemeris/moon/" using a new tieMoonPos() function.
In addition the moon illumination factor is exposed by tying the simgear
MoonPos::getIlluminanceFactor() function to the /environment/moonlight property.
This is a number ranging between 0 and 1 based on the log of the illuminance of
the moon outside the atmosphere. It is calculated as
factor = (log(I) - max_loglux) / (max_loglux - min_loglux) + 1.0,
The illuminance of the moon outside the atmosphere, I, is from equation 20 from:
Krisciunas K. and Schaefer B.E. (1991). A model of the brightness of
moonlight, Publ. Astron. Soc. Pacif. 103(667), 1033-1039 (DOI:
http://dx.doi.org/10.1086/132921).
For more background, see
http://forum.flightgear.org/viewtopic.php?f=47&t=28201&start=60#p270516 .
Remove uses of .str(), .c_str() and some other methods of SGPath.
Pass SGPath directly where possible, or explicitly convert to the
appropriate 8-bit encoding.
The precipitation branch of the OSG scene graph is now centrally managed by the
scenery manager rather the precipitation manager itself. The scene graph
initialisation from the constructor has also been shifted into the new
FGPrecipitationMgr::sceneGraphSetup() function.
