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<H1>Re: [MUD-Dev] string parsing</H1>
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<LI><em>To</em>: <A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] string parsing</LI>
<LI><em>From</em>: "Felix A. Croes" &lt;<A HREF="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</A>&gt;</LI>
<LI><em>Date</em>: Tue, 4 Nov 1997 13:25:28 +0100 (MET)</LI>
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<PRE>
coder#ibm,net wrote:
&gt;[...]
&gt; &gt;If the mud has such object relations as `next to', `on top of' etc, then
&gt; &gt;it makes sense to have syntax rules, and functions to give them meaning,
&gt; &gt;for all of them.
&gt;
&gt; My support for prepositions is currently, err, inelegant and flakey.  I've
&gt; not examined the area in depth, but when I do re-approach it I will want
&gt; the system to be able to analyse the locations of multiple objects and
&gt; determine the applicable prepositions which apply to their positions ("The
&gt; ball and the light are above the table.")  As such the base idea I have
&gt; stashed is to operate off a tuple which defines the class of preposition
&gt; (ie list of terms), and the spatial transformation which defines its
&gt; scope.  This (hopefully) reduces prepositions to a generic form which can
&gt; be both parsed and back-constructed.

I think the difficulty in recognizing such object relations stems from
trying to do everything with a single positional system.

Proposed solution:

Start with a hierarchical container system at its most abstract.  Let
each object have a "position" in its container.  The interpretation of
the position is left to the container.  The position can be a pair of
coordinates meaningful in the plane defined by the room, or a triplet
of coordinates in the 3-D space defined by the room, or
(angle, distance, speed) relative to the room, which is the planet in
whose gravitational field the object resides.

The position could then simply be a string like "inside", "beside" and
"above" to indicate the position relative to the container, without
imposing the same system on the rest of the mud.

Felix Croes

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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] string parsing</STRONG>, <EM>(continued)</EM>
<ul compact>
<LI><strong><A NAME="00198" HREF="msg00198.html">Re: [MUD-Dev] string parsing</A></strong>, 
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sat 01 Nov 1997, 20:17 GMT
</LI>
<LI><strong><A NAME="00228" HREF="msg00228.html">Re: [MUD-Dev] string parsing</A></strong>, 
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Mon 03 Nov 1997, 13:25 GMT
<UL>
<LI><strong><A NAME="00231" HREF="msg00231.html">Re: [MUD-Dev] string parsing</A></strong>, 
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Tue 04 Nov 1997, 04:30 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00233" HREF="msg00233.html">Re: [MUD-Dev] string parsing</A></strong>, 
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Tue 04 Nov 1997, 07:03 GMT
</LI>
<LI><strong><A NAME="00235" HREF="msg00235.html">Re: [MUD-Dev] string parsing</A></strong>, 
Felix A. Croes <a href="mailto:felix#xs1,simplex.nl">felix#xs1,simplex.nl</a>, Tue 04 Nov 1997, 12:25 GMT
<UL>
<LI><strong><A NAME="00254" HREF="msg00254.html">Re: [MUD-Dev] string parsing</A></strong>, 
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Sun 09 Nov 1997, 05:39 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00262" HREF="msg00262.html">Re: [MUD-Dev] string parsing</A></strong>, 
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Sun 09 Nov 1997, 18:39 GMT
<UL>
<LI><strong><A NAME="00275" HREF="msg00275.html">Re: [MUD-Dev] string parsing</A></strong>, 
coder <a href="mailto:coder#ibm,net">coder#ibm,net</a>, Wed 12 Nov 1997, 03:30 GMT
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</UL>
</LI>
<LI><strong><A NAME="00280" HREF="msg00280.html">Re: [MUD-Dev] string parsing</A></strong>, 
Chris Gray <a href="mailto:cg#ami-cg,GraySage.Edmonton.AB.CA">cg#ami-cg,GraySage.Edmonton.AB.CA</a>, Wed 12 Nov 1997, 15:42 GMT
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</ul>
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</UL></BLOCKQUOTE>

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