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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:alexo#bigfoot,com">alexo#bigfoot,com</A> (Alex Oren)</LI>
<LI><em>Date</em>: Mon, 23 Jun 1997 08:59:50 GMT</LI>
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<PRE>
Which brings me back to the topic.
How would I implement the equivalent of room-spoofs in a coordinate-based
setting?
Shawn wrote:
} clawrenc#cup,hp.com wrote:
} >
} > In <<A HREF="msg01266.html">339C618C.167EB0E7#iname,com</A>>, on 06/09/97
} > at 05:16 PM, Shawn Halpenny <malachai#iname,com> said:
}
} [ original handling of user-programming ]
}
} > You're going to have a checklist to run every piece of code past to
} > make sure nothing has been missed? You're never going to skip or
} > skimp something on this list? This list is going to always be updated
} > as the system changes?
} >
} > >The solution above is not exactly conducive to that.
} >
} > Quite.
}
} _Originally_ that was my intent, though the more I thought about what I
} wanted to be possible, the less I looked forward to the amount of work
} involved. So no, there won't be any checklist that I have to watch over,
} since if I can make things generic enough, everything will hold itself
} together and not need me to hold its hand. The addition of user-programming
} was a fairly recent thing for me, so some changes of methodology are
} definitely necessary.
}
} [ spoof implementation ]
}
} Which is essentially what I'm getting at here:
}
} > >I make the magic-effect creator a method on a container (say, a room)
} > >and whenever I want to "spoof", I just override the method in a
} > >derived object (something I already do elsewhere, hence my realizing
} > >I'd not thought the post through enough). Simple enough, since all
} > >the rooms are derived from a common object (which would have been
} > >that magic-effect creator if you went high enough up the inheritance
} > >tree) anyhow. That should now account for stupid programmers and
} > >make things much more scalable. And of course, if one does the
} > >inheritance and overriding properly, it's nicely applicable to all
} > >sorts of other situations.
} >
} > Bingo.
}
} Good. Nothing new or quirky going on here, just plain OOD. What I called
} "inheritance" is your spoof-by-cloning, and your generic methods are what
} I do through overriding.
}
} > >If A wants to watch B, A sticks a reference to itself in a list
} > >inside B. State changes in B will now send notification to A
} > >provided the change matches the parameters required by the watcher.
} > >A can stop watching B whenever it chooses, but only the destruction
} > >of B can force A to stop watching B.
} >
} > Ahh. I don't have any sort of filtering or definition of watchers. A
} > watcher just triggers whenever an object changes. The result is a
} > message sent to the waiting object of the form, "I HAVE CHANGED". I
} > then leave it up to the waiting object to figure out what changed, and
} > if they are interested in that change.
}
} A watcher will only trigger if the correct property (or properties)
} changes so that the watching object isn't deluged by messages about state
} changes it doesn't care about on busy objects. The waiting object only has
} to decide what to do with the change, since it only gets messages
} concerning the things it cares about.
}
} > This allows a watcher to trigger on a state change for a private data
} > member in an object. Depending on the strictness of your views on
} > data encapsulation, this can be thought of as a Good Thing, or a Bad
} > Thing.
}
} Watchers can trigger on private data changes by not defining exactly what
} they're watching, but choosing to watch for a change in any property. So
} I still maintain the low message traffic for watchers waiting on a few
} properties, and don't have to cheat my encapsulation by allowing watching
} on the entire object if desired.
}
} --
} Shawn Halpenny
}
} "Caesar si viveret, ad remum dareris"
} - Latin for All Occasions
}
}
Have fun,
Alex.
</PRE>
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<li><strong><A NAME="01618" HREF="msg01618.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>
<ul compact><li><em>From:</em> clawrenc#cup,hp.com</li></ul>
<li><strong><A NAME="01465" HREF="msg01465.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>
<ul compact><li><em>From:</em> Nathan Yospe <yospe#hawaii,edu></li></ul>
<li><strong><A NAME="01458" HREF="msg01458.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>
<ul compact><li><em>From:</em> Shawn Halpenny <malachai#iname,com></li></ul>
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<LI><STRONG><A NAME="01299" HREF="msg01299.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></STRONG>
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<LI><STRONG><A NAME="01308" HREF="msg01308.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></STRONG>
<UL><LI><EM>From:</EM> Shawn Halpenny <malachai#iname,com></LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] Room-based vs. coordinate-based</STRONG>, <EM>(continued)</EM>
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<LI><strong><A NAME="01299" HREF="msg01299.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Thu 12 Jun 1997, 08:02 GMT
<LI><strong><A NAME="01308" HREF="msg01308.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
Shawn Halpenny <a href="mailto:malachai#iname,com">malachai#iname,com</a>, Thu 12 Jun 1997, 21:03 GMT
<LI><strong><A NAME="01313" HREF="msg01313.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Fri 13 Jun 1997, 05:35 GMT
<LI><strong><A NAME="01319" HREF="msg01319.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
Shawn Halpenny <a href="mailto:malachai#iname,com">malachai#iname,com</a>, Fri 13 Jun 1997, 20:34 GMT
</LI>
</LI>
<LI><strong><A NAME="01452" HREF="msg01452.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
Alex Oren <a href="mailto:alexo#bigfoot,com">alexo#bigfoot,com</a>, Mon 23 Jun 1997, 15:59 GMT
<LI><strong><A NAME="01458" HREF="msg01458.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
Shawn Halpenny <a href="mailto:malachai#iname,com">malachai#iname,com</a>, Mon 23 Jun 1997, 23:52 GMT
<LI><strong><A NAME="01619" HREF="msg01619.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
clawrenc <a href="mailto:clawrenc#cup,hp.com">clawrenc#cup,hp.com</a>, Tue 01 Jul 1997, 06:45 GMT
</LI>
</LI>
<LI><strong><A NAME="01465" HREF="msg01465.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
Nathan Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Tue 24 Jun 1997, 01:33 GMT
<LI><strong><A NAME="01474" HREF="msg01474.html">Re: [MUD-Dev] Room-based vs. coordinate-based</A></strong>,
Alex Oren <a href="mailto:alexo#bigfoot,com">alexo#bigfoot,com</a>, Tue 24 Jun 1997, 14:09 GMT
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