Whoops ... shouldn't write such things from memory ...
* Melchior FRANZ -- Thursday 15 November 2007:
> func(<changed-node>, <listened-to-node>, <event>, <is-parent-event>)
^^^^^^^^^^^^^^^^^
Make that <is-child-event>, and it's usually 0. Only in runtime=2
mode it is 1 when the <changed-node> is actually a child of the
<listened-to-node>. But I don't expect that many will use this
listener mode at all, so no reason to understand it all. :-)
See debug.prop_trace() for how to use a type-2 listener.
Or type this into the Nasal console:
setlistener("", func { debug.dump(arg) }, 0, 2);
Yes, we are listening to the root node! :-) You'll see all four
args dumped to the terminal for *every* "listenable" property
event in the whole tree. That slows fgfs down a bit, but is
worth trying out. :-)
m.
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