replaced with efficient listener callbacks. One use is the new FPS display.
This is reviewed and OK'ed by Andy, relatively trivial and separated from
the rest of Nasal, so problems are quite unlikely and confined to users of
this function.
The callback is executed whenever the property is written to -- even if
the value didn't change. The triggering Node is available via cmdarg().
Examples: _setlistener("/sim/crashed", func {print("haha!")});
_setlistener("/foo/bar", func { print(cmdarg().getPath() ~ " changed")})
- make it public
- enable handleCommand() to execute a binding (or other nasal code defined
in a property system subtree) in a particular namespace (-> "module" child)
interface, and use it to cache FGNasalScript objects returned from
a new parseScript() method.
Added a rand() function.
Added an interpolate() function interface to the new SGInterpolator
subsystem.
