33 lines
1,020 B
Text
33 lines
1,020 B
Text
##
|
|
# Returns true if the first object is an instance of the second
|
|
# (class) object. Example: isa(someObject, props.Node)
|
|
#
|
|
isa = func {
|
|
obj = arg[0]; class = arg[1];
|
|
if(!contains(obj, "parents")) { return 0; }
|
|
foreach(c; obj.parents) {
|
|
if(c == class) { return 1; }
|
|
elsif(isa(obj, c)) { return 1; }
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
##
|
|
# Invokes a FlightGear command specified by the first argument. The
|
|
# second argument specifies the property tree to be passed to the
|
|
# command as its argument. It may be either a props.Node object or a
|
|
# string, in which case it specifies a path in the global property
|
|
# tree.
|
|
#
|
|
fgcommand = func {
|
|
if(isa(arg[1], props.Node)) { _fgcommand(arg[0], arg[1]._g) }
|
|
_fgcommand(arg[0], propTree);
|
|
}
|
|
|
|
##
|
|
# Returns the SGPropertyNode argument to the currently executing
|
|
# function. Wrapper for the internal _cmdarg function that retrieves
|
|
# the ghost handlet to the argument and wraps it in a
|
|
# props.Node object.
|
|
#
|
|
cmdarg = func { props.wrapNode(_cmdarg()) }
|