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<H1>Re: [MUD-Dev] Room-based vs. coordinate-based</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] Room-based vs. coordinate-based</LI>
<LI><em>From</em>: <A HREF="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</A></LI>
<LI><em>Date</em>: Tue, 01 Jul 97 13:19:03 -0700</LI>
<LI><em>Reply-to</em>: <A HREF="mailto:claw#null,net">claw#null,net</A></LI>
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<PRE>
In <199706260440.VAA06955#pc4,zennet.com>, on 06/25/97
at 09:47 PM, "Brandon J. Rickman" <ashes#pc4,zennet.com> said:
>On Mon, 23 Jun 1997, Shawn Halpenny <malachai#iname,com> wrote:
>An aside--given:
>>Room R at time t=0.
>>An earthquake is scheduled to occur in R at t+5.
>>Room R is spoofed at t+2, creating R' which now exists in lieu of R.
>>Time t+5 arrives, the earthquake occurs. Are the effects of the
>> earthquake applied to R, R', or both? Generalized: are any
>> actions occuring on R to be duplicated on R' and vice versa?
>
>>Note: the spoofing of R and the earthquake are independent events
>>and are completely unrelated in cause, execution, and effect.
>This is a great example of a particularly bad (and quite common) way
>of non-atomic coding. "Scheduling" an event in this case is like
>declaring a prophecy: "There will be an earthquake in 5 ticks!"
Why do you define this as "bad"? Given that you need to change the
semantics of the sceduled event from "There will be an earthquake at X
time," to "Decide at X time if there will be an earthquake then," I
don't see a problem (ie this is what I've been doing without trouble).
>I'll go out on a limb and claim that events must always immedidately
>originate from objects. There should be no indirection of events,
>such that an event might be scheduled by an object but actually be
>originated as a server action.
>In the above, R (for all practical purposes) is the originator of the
> earthquake. But by scheduling the event at t+5, R has added
>indirection. Now at t+5 either the server emits the event only to R
>and no one sees it, or the server looks for R, can't find it, and
>dumps the event.
Yup. An event is actually a message: a method call with a particular
payload in the form of arguments. Its not to be seen, its to be
reacted to, thus causing effects which may be seen.
>I'm thinking cold-like frobs provide a way to solve this.
Frobs? How so?
>Otherwise
>a tighter way of relating the spoofed object to the object of
>spoofing is needed. Then R gets the event and passes it on to it's
>spoof. This would need quite a bit of garbage collection.
See my prior discussion and definition of spoofs. Its all handled
automagically -- there is no necessity for garbage collection or other
clean ups. The spoof merely adds an automated form of indirection and
filtering.
--
J C Lawrence Internet: claw#null,net
(Contractor) Internet: coder#ibm,net
---------------(*) Internet: clawrenc#cup,hp.com
...Honorary Member Clan McFUD -- Teamer's Avenging Monolith...
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] common server design</STRONG>, <EM>(continued)</EM>
<ul compact>
<ul compact>
<LI><strong><A NAME="00491" HREF="msg00491.html">Re: [MUD-Dev] common server design</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Tue 12 Aug 1997, 17:34 GMT
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</ul>
<LI><strong><A NAME="00509" HREF="msg00509.html">[MUD-Dev] common server design</A></strong>,
Cynbe ru Taren <a href="mailto:cynbe#laurel,actlab.utexas.edu">cynbe#laurel,actlab.utexas.edu</a>, Wed 13 Aug 1997, 04:54 GMT
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</ul>
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<LI><strong><A NAME="00015" HREF="msg00015.html">Re: [MUD-Dev] noise</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Wed 02 Jul 1997, 03:40 GMT
<UL>
<LI><strong><A NAME="00035" HREF="msg00035.html">Re: [MUD-Dev] noise</A></strong>,
Adam Wiggins <a href="mailto:nightfall#user1,inficad.com">nightfall#user1,inficad.com</a>, Wed 02 Jul 1997, 15:55 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00013" HREF="msg00013.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Wed 02 Jul 1997, 03:25 GMT
<LI><strong><A NAME="00012" HREF="msg00012.html">Re: [MUD-Dev] Git out the boar spear, Martha!</A></strong>,
Nathan Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Wed 02 Jul 1997, 02:49 GMT
<UL>
<li><Possible follow-up(s)><br>
<LI><strong><A NAME="00058" HREF="msg00058.html">Re: [MUD-Dev] Git out the boar spear, Martha!</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Thu 03 Jul 1997, 07:38 GMT
</LI>
<LI><strong><A NAME="00068" HREF="msg00068.html">Re: [MUD-Dev] Git out the boar spear, Martha!</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Fri 04 Jul 1997, 01:02 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00011" HREF="msg00011.html">Re: [MUD-Dev] Level abstractions - Realism vs Game Issues</A></strong>,
Nathan Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Wed 02 Jul 1997, 02:21 GMT
</LI>
</UL></BLOCKQUOTE>
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