July 1997
- A simple political/social system? Jon A. Lambert
- A simple political/social system? clawrenc@cup.hp.com
- A simple political/social system? Marian Griffith
- A simple political/social system? clawrenc@cup.hp.com
- A simple political/social system? Jon A. Lambert
- Wounds and trauma Adam Wiggins
- Wounds and trauma clawrenc@cup.hp.com
- Wear Location System Jon A. Lambert
- Level abstractions clawrenc@cup.hp.com
- (fwd) Popularity of text-based MUDS clawrenc@cup.hp.com
- trying again Chris Gray
- My page, such as it is. Michael A. Hohensee
- What happened? Michael Hohensee
- Testing coder@ibm.net
- > Integrating PK Matt Chatterley
- Level abstractions / Game realism issues Matt Chatterley
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling Chris Gray
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Chris Gray
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Jon A. Lambert
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Jon A. Lambert
- C&C and Event Rescheduling Jon A. Lambert
> From: clawrenc@cup.hp.com
> > at 01:27 PM, Shawn Halpenny <malachai@iname.com> said:
>
[snip]
> That is a model question that I have slated to look into again. It
> actually cuts very close to the core of the entire event model:
>
> Should the logging and storage of pending event data be localised
> into a central object or repository, or should pending events be
> bound to their owning objects?
>
The latter resembles the pure event model which I alluded to in my
last post. Essentially the dispatcher is dumb and merely passes
messages around to objects. The biggest problem is solving
transactional consistency if every method is an event or object
message.
> There are some efficiency and stability questions underneath this.
>
> Currently I do everything centrally. Objects have no idea that
> there are events pending for them, or that their internal code has
> been responsible for logging events for other objects. This was a
> deliberate decision back when I decided (for reasons now largely
> forgotten but centered on keeping the division of larbour and OO
> design clean) that the DB should *NOT* be self-animating, but that
> the DB should essentially be dead, and animated by an external
> structure of events.
>
Yes, but the objects in the DB are "primed" at some point via
creation or load/reboot of server and the DB's objects sustain life by
issuing events as their events die. I prefer this also.
[snipped familiar model]
>
> What I could do instead is move everything down into the DB. As
> such the concept of the Dispatchor would largely remain, but the
> Executor would largely be lost. Instead each individual object
> would become its own dispatchor or executor. There would be some
> inevitable efficiency losses, but it could work.
>
> <shudder>
Exactly.
> >One could use a sort of "super" event that is responsible for the
> >execution of a series of sub-events, and successful commit of the
> >super would occur when all the subs themselves committed.
> >Unfortunately, the potential for involving a large(r) number of
> >objects in that super event could cause a lot of failed commits
> >until this super event drove the thing to single-threading.
>
> This is essentially the concept of supporting nested transactions.
> its almost inevitable. I do this implicitly by making every method
> call effectively a nested transaction. The result is that each
> method call inherits the working set of its caller, and commits its
> working set back to its caller on return. If it turns out that
> there is no parent (ie it is the method that started the event),
> then the working set tries to commit to the DB.
>
> Hurm.
>
Perhaps there is another way? Someone requested (Shawn?) that I
post an example of a mud language which handled transactions.
So here be it:
object Dragon class BigMutha {
var fatigue_points;
var location;
method event Move(var direction) {
if Dragonden.ExitStatus(direction) == OPEN {
Dragonden.RemoveObj(this);
Dragonden.GetExitLocation().AddObject(this);
FatigueMe(5);
EvaluateSituation(10);
}
else
SendOut("The Door is Closed");
EvaluateSituation(10);
throw #EVENTFAIL;
}
}
method FatigueMe(var points) {
fatigue_points = fatigue_points - points;
if fatigue_points < 0 {
fatigue_points = 0;
SendOut("Your too tired to move");
EvaluateSituation(10);
throw #EVENTFAIL;
}
}
method event EvaluateSituation() {
...Insert some clever code here
which might at some point select...
Move(20,"east");
}
}
The important points are the different types of methods. Event
methods form a logically consistent transaction and may call
any number of methods of any type. Commit of the transaction
is done at the end of the event's method. Also when
EvaluateSituation() is called above a new event is logged and
it is not executed immediately. The next statement is.
Event methods have as their first implicit parameter a timing
value. In the above case Move(20,"east") will occur in 20 tenths of a
second (I hope).
Comments?
JL - C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Nathan Yospe
- C&C and Event Rescheduling Adam Wiggins
- C&C and Event Rescheduling Richard Woolcock
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Richard Woolcock
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Adam Wiggins
- C&C and Event Rescheduling Marian Griffith
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Adam Wiggins
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Miroslav Silovic
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Jon A. Lambert
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling Miroslav Silovic
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Miroslav Silovic
- C&C and Event Rescheduling Miroslav Silovic
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Miroslav Silovic
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Jon A. Lambert
- C&C and Event Rescheduling Shawn Halpenny
- C&C and Event Rescheduling Jeff Kesselman
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Jeff Kesselman
- C&C and Event Rescheduling clawrenc@cup.hp.com
- C&C and Event Rescheduling Jeff Kesselman
- not about pk anymore Marian Griffith
- not about pk anymore Huibai
- not about pk anymore Matt Chatterley
- not about pk anymore clawrenc@cup.hp.com
- not about pk anymore Alex Oren
- not about pk anymore Matt Chatterley
- not about pk anymore clawrenc@cup.hp.com
- natural language parser (Output) Nathan Yospe
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Adam Wiggins
- Virtual Chemistry Jon A. Lambert
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Jon A. Lambert
- Virtual Chemistry Adam Wiggins
- Virtual Chemistry Jon A. Lambert
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Michael Hohensee
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Marian Griffith
- Virtual Chemistry Chris Gray
- Virtual Chemistry Marian Griffith
- Virtual Chemistry Chris Gray
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Chris Gray
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry clawrenc@cup.hp.com
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Nathan Yospe
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Nathan Yospe
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Marian Griffith
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Marian Griffith
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Jon A. Lambert
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry clawrenc@cup.hp.com
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry clawrenc@cup.hp.com
- Virtual Chemistry Marian Griffith
- Virtual Chemistry Jon A. Lambert
- Virtual Chemistry Brandon Van Every
- Virtual Chemistry Jon A. Lambert
- Virtual Chemistry Huibai
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Matt Chatterley
- Virtual Chemistry Adam Wiggins
- Virtual Chemistry Huibai
- Virtual Chemistry Marian Griffith
- Virtual Chemistry clawrenc@cup.hp.com
- Combat Adam Wiggins
- Attn JCL: A scenario for you Alex Oren
- Combat messages Marian Griffith
- Combat messages Adam Wiggins
- Combat messages Martin Keegan
- Combat messages Matt Chatterley
- What about drugs? Nathan Yospe
- What about drugs? Adam Wiggins
- What about drugs? Jon A. Lambert
- What about drugs? Martin Keegan
- coord-based recap? Huibai
- coord-based recap? clawrenc@cup.hp.com
- Docs uploaded Chris Gray
- What are the elements of playabilty? clawrenc@cup.hp.com
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Cynbe ru Taren
- META: Making the list public? coder@ibm.net
- META: Making the list public? Michael Hohensee
- META: Making the list public? Chris Gray
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Brandon Gillespie
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Michael Hohensee
- META: Making the list public? Brandon Gillespie
- META: Making the list public? Shawn Halpenny
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Shawn Halpenny
- META: Making the list public? Alex Oren
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Shawn Halpenny
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Jon A. Lambert
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Matt Chatterley
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Huibai
- META: Making the list public? Martin Keegan
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Marian Griffith
- META: Making the list public? Jon A. Lambert
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Shawn Halpenny
- META: Making the list public? clawrenc@cup.hp.com
- META: Making the list public? Matt Chatterley
- Longbows and such. Cynbe ru Taren
- R-trees &kin Cynbe ru Taren
- R-trees &kin Martin Keegan
- META: Making the list public? S001GMU@nova.wright.edu
- META: Making the list public? clawrenc@cup.hp.com
- META: C&C and Event Rescheduling clawrenc@cup.hp.com
- Source data on Crossbows clawrenc@cup.hp.com
- Source data on Crossbow Cynbe ru Taren
- Source data on Crossbow Matt Chatterley
- Source data on Crossbow Cynbe ru Taren
- Source data on Crossbow Matt Chatterley
- Source data on Crossbow clawrenc@cup.hp.com
- Source data on Crossbow Matt Chatterley
- Source data on Crossbow clawrenc@cup.hp.com
- Source data on Crossbow Matt Chatterley
- Source data on Crossbow Caliban Tiresias Darklock
- Source data on Crossbow Marian Griffith
- Source data on Crossbow clawrenc@cup.hp.com
- Source data on Crossbow Orion Henry
- Source data on Crossbow Cynbe ru Taren
- Source data on Crossbow Matt Chatterley
- Source data on Crossbow Michael Hohensee
- Source data on Crossbow Matt Chatterley
- Source data on Crossbow clawrenc@cup.hp.com
- Source data on Crossbow daggers@iquest.net
- Source data on Crossbow Rudy Neeser
- Source data on Crossbow Malcolm Tester II
- Source data on Crossbow Travis Casey
- Source data on Crossbow rayzam
- Source data on Crossbow Blane Bramble
- Source data on Crossbow Daniel Carruth
- Source data on Crossbow Michael Tresca
- Source data on Crossbow Bobby Martin
- Source data on Crossbow Christopher Kohnert
- Source data on Crossbow Bobby Martin
- Source data on Crossbow Christopher Kohnert
- Source data on Crossbow Dave Rickey
- Source data on Crossbow werda555@yahoo.com
- Source data on Crossbow Nathan Yospe
- Source data on Crossbow Travis Casey
- Source data on Crossbow Bobby Martin
- Source data on Crossbow Hans-Henrik Staerfeldt
- Source data on Crossbow Bobby Martin
- Source data on Crossbow Ben Tolputt
- Source data on Crossbow andy.wharton@ascentialsoftware.com
- Source data on Crossbow Skaei@aol.com
- Source data on Crossbow rayzam
- Public Archives (META: Making the list public?) Brandon Gillespie
- Socrates - A brief look at AI(?) Jon A. Lambert
- Evil coders from beyond the grave Matt Chatterley
- Evil coders from beyond the grave Orion Henry
- Evil coders from beyond the grave Matt Chatterley
- Evil coders from beyond the grave Chris Gray
- Evil coders from beyond the grave Matt Chatterley
- Evil coders from beyond the grave Adam Wiggins
- Evil coders from beyond the grave Matt Chatterley
- Graphical MUDs Michael Hohensee
- Graphical MUDs Cynbe ru Taren
- Graphical MUDs Michael Hohensee
- Graphical MUDs Shawn Halpenny
- Graphical MUDs clawrenc@cup.hp.com
- Graphical MUDs Chris Gray
- Brief bio Niklas Elmqvist
- Brief bio Martin Keegan
- Multi-threaded programming under Linux Greg Munt
- Multi-threaded programming under Linux Nathan Yospe
- Multi-threaded programming under Linux Cynbe ru Taren
- Multi-threaded programming under Linux S001GMU@nova.wright.edu
- Multi-threaded programming under Linux Chris Gray
- Multi-threaded programming under Linux Jeff Kesselman
- Multi-threaded programming under Linux Cynbe ru Taren
- Multi-threaded programming under Linux Orion Henry
- Multi-threaded programming under Linux Michael Hohensee
- Multi-threaded programming under Linux] Michael Hohensee
- Multi-threaded programming under Linux clawrenc@cup.hp.com
- Multi-threaded programming under Linux Jon A. Lambert
- Multi-threaded programming under Linux Nathan Yospe
- Multi-threaded programming under Linux Jon A. Lambert
- Multi-threaded programming under Linux Alex Oren
- Multi-threaded programming under Linux clawrenc@cup.hp.com
- Multi-threaded programming under Linux clawrenc@cup.hp.com
- (fwd) LP: How does it work? coder@ibm.net
- Collision detection coder@ibm.net
- OT: Multi-threaded programming under Linux coder@ibm.net
- Motivating people Greg Munt
- Motivating people Chris Gray
- Motivating people Huibai
- Motivating people clawrenc@cup.hp.com
- Motivating people Jon A. Lambert
- Motivating people Greg Munt
- Motivating people clawrenc@cup.hp.com
- Motivating people clawrenc@cup.hp.com
- OT: Multi-threaded programming under linux Orion Henry
- Graphic MUDS. Jeff Kesselman
- Graphic MUDS. Chris Gray
- Graphic MUDS. Jeff Kesselman
- Graphic MUDS. Chris Gray
- Graphic MUDS. Matt Chatterley
- Graphic MUDS. Adam Wiggins
- Graphic MUDS. Chris Gray
- Graphic MUDS. Michael Hohensee
- Graphic MUDS. Jon A. Lambert
- Graphic MUDS. clawrenc@cup.hp.com
- Graphic MUDS. Adam Wiggins
- Graphic MUDS. Martin Keegan
- Graphic MUDS. Adam Wiggins
- Graphic MUDS. clawrenc@cup.hp.com
- Graphic MUDS. Martin Keegan
- Graphic MUDS. Matt Chatterley
- Graphic MUDS. Jeff Kesselman
- Graphic MUDS. clawrenc@cup.hp.com
- Stories? Marian Griffith
- KaVir Nathaniel Blundell
- OT: Server Web Site Jon A. Lambert
- Recent mail delivery problems... clawrenc@cup.hp.com
- Mail not getting to the list coder@ibm.net
- Mail not getting to the list Caliban Tiresias Darklock
- Mail not getting to the list Jeff Kesselman
- Graphic MUDS/Ultima Online Koster, Raph
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online Koster, Raph
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Koster, Raph
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online Alex Oren
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Koster, Raph
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Chris Gray
- Graphic MUDS/Ultima Online Richard Woolcock
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Chris Gray
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online Nathan Yospe
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Richard Woolcock
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Richard Woolcock
- Graphic MUDS/Ultima Online Nathan Yospe
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Richard Woolcock
- Graphic MUDS/Ultima Online Nathan Yospe
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online Koster, Raph
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online Michael Hohensee
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Matt Chatterley
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online Adam Wiggins
- Graphic MUDS/Ultima Online Jeff Kesselman
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- Graphic MUDS/Ultima Online clawrenc@cup.hp.com
- First Muds - newbie magic? Nathan Yospe
- First Muds - newbie magic? clawrenc@cup.hp.com
- First Muds - newbie magic? Martin Keegan
- Dynamic Descriptions Nathan Yospe
- Dynamic Descriptions Chris Gray
- Dynamic Descriptions Martin Keegan
- Dynamic Descriptions clawrenc@cup.hp.com
- Dynamic Descriptions Nathan Yospe
- Dynamic Descriptions Jeff Kesselman
- Dynamic Descriptions clawrenc@cup.hp.com
- Dynamic Descriptions Jeff Kesselman
- Persistant worlds, Dan Huibai
- Worlds VS Games, etc {was GMuds, UO} Nathan Yospe
- Worlds VS Games, etc {was GMuds, UO} Koster, Raph
- OT: NIS/AlterNIC and the DNS system Caliban Tiresias Darklock
- OT: Mail not getting to the list clawrenc@cup.hp.com
- OT: Mail not getting to the list clawrenc@cup.hp.com
- Persistance/stability Chris Gray
- Persistance/stability Miroslav Silovic
- Persistance/stability Matt Chatterley
- Persistance/stability clawrenc@cup.hp.com
- Persistance/stability Chris Gray
- Persistance/stability Brandon Gillespie
- Persistance/stability Adam Wiggins
- Persistance/stability Chris Gray
- Persistance/stability Adam Wiggins
- Tilting at the SimWindmill - was UO Jon A. Lambert
- DESIGN: The purpose of MUDding? coder@ibm.net
- DESIGN: The purpose of MUDding? Brandon Van Every
- DESIGN: The purpose of MUDding? Matt Chatterley
- DESIGN: The purpose of MUDding? Brandon Van Every
- DESIGN: The purpose of MUDding? Matt Chatterley
- DESIGN: The purpose of MUDding? clawrenc@cup.hp.com
- DESIGN: The purpose of MUDding? Matt Chatterley
- DESIGN: The purpose of MUDding? Jeff Kesselman
- DESIGN: The purpose of MUDding? Jeff Kesselman
- DESIGN: The purpose of MUDding? clawrenc@cup.hp.com
- DESIGN: The purpose of MUDding? clawrenc@cup.hp.com
- DESIGN: The purpose of MUDding? clawrenc@cup.hp.com