April 1998
- Persistant storage.... My current idea. J C Lawrence
- Persistant storage.... My current idea. J C Lawrence
- Persistant storage.... My current idea. Chris Gray
- Persistant storage.... My current idea. J C Lawrence
- Persistant storage.... My current idea. J C Lawrence
- OT: This is a test of a system config change. coder@ibm.net
- MUD Development Digest Dr. Cat
- MUD Development Digest Justin McKinnerney
- MUD Development Digest Nathan F Yospe
- MUD Development Digest Justin McKinnerney
- MUD Development Digest J C Lawrence
- MUD Development Digest J C Lawrence
- MUD Development Digest Jon A. Lambert
- MUD Development Digest Chris Gray
- MUD Development Digest J C Lawrence
- MUD Development Digest J C Lawrence
- MUD Development Digest J C Lawrence
- MUD Development Digest Ben Greear
- MUD Development Digest Jon A. Lambert
- MUD Development Digest Chris Gray
- MUD Development Digest Ben Greear
- MUD Development Digest Dr. Cat
- MUD Development Digest Ben Greear
- MUD Development Digest Justin McKinnerney
- MUD Development Digest Dr. Cat
- MUD Development Digest Justin McKinnerney
- MUD Development Digest Dr. Cat
- MUD Development Digest J C Lawrence
- MUD Development Digest Matt Chatterley
- MUD Development Digest J C Lawrence
- GRUMPS maddog@best.com
- caved in: Algorithms for for storing free space. Ben Greear
- internet connections Chris Gray
- GRUPMS? Vadim Tkachenko
- [Fwd: MUD-Dev] Richard Woolcock
- [Fwd: MUD-Dev] Nathan F Yospe
- [Fwd: MUD-Dev] coder@ibm.net
- [Fwd: MUD-Dev] Katrina McClelan
- [Fwd: MUD-Dev] Richard Woolcock
- [Fwd: MUD-Dev] J C Lawrence
- [Fwd: MUD-Dev] Travis S. Casey
- [Fwd: MUD-Dev] maddog@best.com
- [Fwd: MUD-Dev] J C Lawrence
- [Fwd: MUD-Dev] J C Lawrence
- [Fwd: MUD-Dev] Jon A. Lambert
- [Fwd: MUD-Dev] Richard Woolcock
- Meta: who dat guy, wot dat web? coder@ibm.net
- Meta: who dat guy, wot dat web? Katrina McClelan
- Meta: who dat guy, wot dat web? s001gmu@nova.wright.edu
- Meta: who dat guy, wot dat web? J C Lawrence
- Meta: who dat guy, wot dat web? Jon A. Lambert
- Meta: who dat guy, wot dat web? J C Lawrence
- [META] Mailing lists Katrina McClelan
- [META] Mailing lists Travis S. Casey
- META: The web presence and wot it ain't gonna be J C Lawrence
- META: The web presence and wot it ain't gonna be Shawn Halpenny
- META: The web presence and wot it ain't gonna be J C Lawrence
- META: The web presence and wot it ain't gonna be J C Lawrence
- (fwd) code for teleport coder@ibm.net
- (fwd) code for teleport Ben Greear
- (fwd) code for teleport s001gmu@nova.wright.edu
- (fwd) code for teleport J C Lawrence
- META: Archive of Megami/Wout's list's traffic? Archive of the CC: list? J C Lawrence
- Resisting Charm or you're cute and nice, but not to die for. Jon A. Lambert
- Resisting Charm or you're cute and nice, but not to die for. s001gmu@nova.wright.edu
- Resisting Charm or you're cute and nice, but not to die for. Katrina McClelan
- Resisting Charm or you're cute and nice, but not to die for. J C Lawrence
- Genetic Algorithms Jon A. Lambert
- MUD Development Digest J C Lawrence
- MUD Development Digest Alex Oren
- MUD Development Digest Chris Gray
- MUD Development Digest Jon Leonard
- MUD Development Digest Jon A. Lambert
- Resisting Charm or you're cute and nice, but not Jon A. Lambert
- Unreal J C Lawrence
- META: The web archives are up for review (alpha 1) J C Lawrence
- META: Archive of Megami/Wout's list's traffic? Archive of Alex Oren
- RGMA Alex Oren
- META: That bloke Yaltec. Khan one
- META: That bloke Yaltec. J C Lawrence
- a fruitful exchange on classlessness in r.g.m.admin Cimri
- MAGE 2 MAGE v. 0.88 J C Lawrence
- META: membership (was a fruitful exchange on classlessness in r.g.m.admin) coder@ibm.net
- META: Archive of Megami/Wout's list's traffic? Archive of Wout Mertens
- (fwd) Development of new code base coder@ibm.net
- Seductions of Sim: Policy as a Simulation Jon A. Lambert
- Seductions of Sim: Policy as a Simulation J C Lawrence
- META: membership (was a fruitful exchange on clas Jon A. Lambert
- Resisting Charm or you're cute and nice, but not t Jon A. Lambert
- META: Web futures and the demise of MUD civilisation as we know it. coder@ibm.net
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! Caliban Tiresias Darklock
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! Richard Woolcock
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! Vadim Tkachenko
- There can be.. only ONE! Jon A. Lambert
- There can be.. only ONE! Vadim Tkachenko
- There can be.. only ONE! Jon A. Lambert
- There can be.. only ONE! Richard Woolcock
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! Ling
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! Matt Chatterley
- There can be.. only ONE! J C Lawrence
- There can be.. only ONE! J C Lawrence
- OT: Caballah [was Character development] Alex Oren
- OT: Caballah [was Character development] Caliban Tiresias Darklock
- OT: Caballah [was Character development] Vadim Tkachenko
- OT: Caballah [was Character development] Vadim Tkachenko
- OT: Caballah [was Character development] Marian Griffith
- OT: Caballah [was Character development] Jon A. Lambert
- Personality modelling Oliver Jowett
- Personality modelling J C Lawrence
- Personality modelling J C Lawrence
- META: membership Holly Sommer
- META: membership Cimri
- META: membership s001gmu@nova.wright.edu
- META: membership Katrina McClelan
- META: Other mailing lists Alex Oren
- META: Other mailing lists J C Lawrence
- META: Web site backgrounds and readability J C Lawrence
- META: Web site backgrounds and readability Cimri
- META: Web site backgrounds and readability Holly Sommer
- META: Web site backgrounds and readability plateau
- META: Web site backgrounds and readability Vadim Tkachenko
- META: Web site backgrounds and readability Caliban Tiresias Darklock
- META: Web site backgrounds and readability Vadim Tkachenko
- META: Web site backgrounds and readability Greg Munt
- META: Web site backgrounds and readability J C Lawrence
- META: Web site backgrounds and readability Caliban Tiresias Darklock
- META: Web site backgrounds and readability Matt Chatterley
- META: Web site backgrounds and readability Holly Sommer
- META: Web site backgrounds and readability Jon A. Lambert
- META: Web site backgrounds and readability Caliban Tiresias Darklock
- META: Web site backgrounds and readability Jon A. Lambert
- META: Web site backgrounds and readability J C Lawrence
- META: Archive message format J C Lawrence
- (fwd) equipment J C Lawrence
- 3D evaluation? J C Lawrence
- META: Archive searching now works... J C Lawrence
- META: Archive searching now works... Bruce Mitchener
- META: Archive searching now works... J C Lawrence
- Fw: [DESIGN] Combat system Richard Woolcock
- [Fwd: Grids and curvature of a sphere] Richard Woolcock
- [Fwd: Grids and curvature of a sphere] Caliban Tiresias Darklock
- [Fwd: Grids and curvature of a sphere] J C Lawrence
- [Fwd: Grids and curvature of a sphere] J C Lawrence
- SfD: AI and muds; several approaches Nathan F Yospe
- META: We have moved. J C Lawrence
- (fwd) Mudlib Design J C Lawrence
- (fwd) SERVER: New Code Base in VB Started J C Lawrence
- (fwd) SERVER: New Code Base in VB Started Jon A. Lambert
- Graphical MUD project (Sea Of Blood) J C Lawrence
- (fwd) Sea of Blood Graphical MUD J C Lawrence
- MAPPING: Creating a bitmaped graphic from map coordinates John Bertoglio
- MAPPING: Creating a bitmaped graphic from map coordinates Nathan F Yospe
- MAPPING: Creating a bitmaped graphic from map coordinates John Bertoglio
- MAPPING: Creating a bitmaped graphic from map coordinates s001gmu@nova.wright.edu
- MAPPING: Creating a bitmaped graphic from map coordinates Jon Leonard
- MAPPING: Creating a bitmaped graphic from map coordinates Caliban Tiresias Darklock
- MAPPING: Creating a bitmaped graphic from map coordinates J C Lawrence
- MAPPING: Creating a bitmaped graphic from map coordinates Vadim Tkachenko
- Gentle Reminder J C Lawrence
- Systems you use Ling
- Systems you use Caliban Tiresias Darklock
- Systems you use J C Lawrence
- Systems you use Adam Wiggins
- Systems you use Jon A. Lambert
- Systems you use Katrina McClelan
- Systems you use J C Lawrence
- Systems you use Katrina McClelan
- (fwd) CODE RELEASE: [client] Jcrossclient - java client to "crossfire" J C Lawrence
- Teamwork Ling
- Teamwork J C Lawrence
- MAPPING: Creating a bitmaped graphic from map Jon A. Lambert
- MAPPING: Creating a bitmaped graphic from map J C Lawrence
- MAPPING: Creating a bitmaped graphic from map Jon A. Lambert
- MAPPING: Creating a bitmaped graphic from map John Bertoglio
- MAPPING: Creating a bitmaped graphic from map Jon A. Lambert
- MAPPING: Creating a bitmaped graphic from map Caliban Tiresias Darklock
- MAPPING: Creating a bitmaped graphic from map Jon A. Lambert
- (fwd) AD: [custom graphical] whitestar Crossfire MUD J C Lawrence
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Dr. Cat
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Ben Greear
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Matt Chatterley
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Chris Gray
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Dr. Cat
- (fwd) AD: [custom graphical] whitestar Crossfire MUD J C Lawrence
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Jay Sax
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Dr. Cat
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Caliban Tiresias Darklock
- (fwd) AD: [custom graphical] whitestar Crossfire MUD J C Lawrence
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Matt Chatterley
- (fwd) AD: [custom graphical] whitestar Crossfire MUD Chris Gray
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) J C Lawrence
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) Adam Wiggins
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) J C Lawrence
- There can be.. only ONE! (fwd) J C Lawrence
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) J C Lawrence
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) J C Lawrence
- There can be.. only ONE! (fwd) Matt Chatterley
- There can be.. only ONE! (fwd) Jon A. Lambert
- There can be.. only ONE! (fwd) J C Lawrence
- There can be.. only ONE! (fwd) Matt Chatterley
- How to represent a 3d object... Ben Greear
- How to represent a 3d object... Oliver Jowett
- How to represent a 3d object... Ben Greear
- How to represent a 3d object... Justin McKinnerney
- How to represent a 3d object... J C Lawrence
- fwd Room descriptions, was Roleplaying John Bertoglio
- fwd Room descriptions, was Roleplaying Chris Gray
- fwd Room descriptions, was Roleplaying Ling
- fwd Room descriptions, was Roleplaying J C Lawrence
- Room descriptions, was Roleplaying Richard Woolcock
- Room descriptions, was Roleplaying John Bertoglio
- Java for Mud Client (Crossfire MUD topic) Justin McKinnerney
- Java for Mud Client (Crossfire MUD topic) Joel Dillon
- Java for Mud Client (Crossfire MUD topic) Justin McKinnerney
- Java for Mud Client (Crossfire MUD topic) Joel Dillon
- Java for Mud Client (Crossfire MUD topic) s001gmu@nova.wright.edu
- Java for Mud Client (Crossfire MUD topic) J C Lawrence
- Java for Mud Client (Crossfire MUD topic) J C Lawrence
- Java for Mud Client (Crossfire MUD topic) Ben Greear
- Java for Mud Client (Crossfire MUD topic) J C Lawrence
- META: mud-dev@null.net is now decommissioned. J C Lawrence
- META: mud-dev@null.net is now decommissioned. John Bertoglio
- META: mud-dev@null.net is now decommissioned. J C Lawrence
- Group mechanics/Leadership [was: Room descriptions] Shawn Halpenny
- Group mechanics/Leadership [was: Room descriptions] John Bertoglio
- (fwd) [DESIGN] Macro semi-language J C Lawrence
- (fwd) [DESIGN] Macro semi-language J C Lawrence
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) J C Lawrence
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) Dr. Cat
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) Marian Griffith
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) J C Lawrence
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) Chris Gray
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) Koster, Raph
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) Adam Wiggins
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) J C Lawrence
- OT: Birth announcement Koster, Raph
- OT: Birth announcement Nathan F Yospe
- OT: Birth announcement J C Lawrence
- OT: Birth announcement J C Lawrence
- OT: Birth announcement John Bertoglio
- OT: Birth announcement J C Lawrence
- OT: Birth announcement Jon A. Lambert
- OT: Birth announcement Koster, Raph
- (fwd) POLL: Games ruined by bad players (Playe Jon A. Lambert
- (fwd) POLL: Games ruined by bad players (Playe Dr. Cat
- (fwd) POLL: Games ruined by bad players (Playe J C Lawrence
- (fwd) POLL: Games ruined by bad players (Playe Dr. Cat
- (fwd) POLL: Games ruined by bad players (Playe J C Lawrence
- (fwd) POLL: Games ruined by bad players (Playe Richard Woolcock
- Some thoughts on languages and users - was: Macro semi Jon A. Lambert
- PK's: A solution? John Bertoglio
- PK's: A solution? Shawn Halpenny
- PK's: A solution? Michael Hohensee
- PK's: A solution? s001gmu@nova.wright.edu
- PK's: A solution? J C Lawrence
- PK's: A solution? Katrina McClelan
- PK's: A solution? John Bertoglio
- PK's: A solution? Holly Sommer
- PK's: A solution? J C Lawrence
- PK's: A solution? John Bertoglio
- META: Membership authentication J C Lawrence
- (fwd) MOB or player? Global Communications on Muds J C Lawrence
- (fwd) MOB or player? Global Communications on Muds John Bertoglio
- (fwd) Confusing? J C Lawrence
- (fwd) Confusing? Chris Gray
- (fwd) POLL: Games ruined by bad players (Player killers, tank rushers etc) J C Lawrence
- PK and my "Mobless MUD" idea Jay Sax
- PK and my "Mobless MUD" idea Caliban Tiresias Darklock
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea Chris Gray
- PK and my "Mobless MUD" idea Ling
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea Marian Griffith
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea Koster, Raph
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea Jon A. Lambert
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Koster, Raph
- PK and my "Mobless MUD" idea Marian Griffith
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea Marian Griffith
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Marian Griffith
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Alex Oren
- PK and my "Mobless MUD" idea Jon A. Lambert
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea Dr. Cat
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea s001gmu@nova.wright.edu
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea Marian Griffith
- PK and my "Mobless MUD" idea Koster, Raph
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Caliban Tiresias Darklock
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea Caliban Tiresias Darklock
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea John Bertoglio
- PK and my "Mobless MUD" idea J C Lawrence
- PK and my "Mobless MUD" idea Adam Wiggins
- PK and my "Mobless MUD" idea Marian Griffith
- PK and my "Mobless MUD" idea John Bertoglio
- META: Mail archives and MIME attachments J C Lawrence
- META: Mail archives and MIME attachments Jon A. Lambert
- Bio of John Bertoglio J C Lawrence
- Reuters: Cheaters Never Prosper J C Lawrence
- Correction s001gmu@nova.wright.edu
- Supporting articles found for UOL play style J C Lawrence
- Supporting articles found for UOL play style John Bertoglio
- Supporting articles found for UOL play style J C Lawrence
- Supporting articles found for UOL play style John Bertoglio
- Supporting articles found for UOL play style Koster, Raph
- Supporting articles found for UOL play style J C Lawrence
- Supporting articles found for UOL play style Koster, Raph
- Mud-Client, and specifically, COOLMud and SFWhite Jay Sax
- regulating player-created objects Dan Shiovitz
- regulating player-created objects Adam Wiggins
- regulating player-created objects Dan Shiovitz
- regulating player-created objects Adam Wiggins
- regulating player-created objects s001gmu@nova.wright.edu
- regulating player-created objects Brandon J. Rickman
- regulating player-created objects Marian Griffith
- regulating player-created objects Brandon J. Rickman
- regulating player-created objects Adam Wiggins
- regulating player-created objects Brandon J. Rickman
- regulating player-created objects Adam Wiggins
- regulating player-created objects Brandon J. Rickman
- regulating player-created objects Adam Wiggins
- regulating player-created objects Nathan F Yospe
- regulating player-created objects Nathan F Yospe
- regulating player-created objects Nathan F Yospe
- regulating player-created objects Dan Shiovitz
- regulating player-created objects Shawn Halpenny
- regulating player-created objects J C Lawrence
- regulating player-created objects J C Lawrence
- regulating player-created objects John Bertoglio
- atomic functions Felix A. Croes
- atomic functions Shawn Halpenny
- atomic functions Felix A. Croes
- atomic functions Shawn Halpenny
- atomic functions Jon A. Lambert
- atomic functions Felix A. Croes
- atomic functions Jon A. Lambert
- atomic functions Felix A. Croes
- atomic functions Jon A. Lambert
- atomic functions Felix A. Croes
- atomic functions Jon A. Lambert
- atomic functions Felix A. Croes
- atomic functions J C Lawrence
- atomic functions Felix A. Croes
- atomic functions J C Lawrence
- atomic functions J C Lawrence
- atomic functions Felix A. Croes
- atomic functions J C Lawrence
- atomic functions Felix A. Croes
- atomic functions J C Lawrence
- atomic functions Felix A. Croes
- atomic functions J C Lawrence
- atomic functions Chris Gray
- atomic functions J C Lawrence
- atomic functions Chris Gray
- atomic functions J C Lawrence
- atomic functions Jon A. Lambert
- atomic functions Chris Gray
- atomic functions J C Lawrence
On Wed, 13 May 1998 17:20:31 -5
Jon A Lambert<jlsysinc@ix.netcom.com> wrote:
> On 13 May 98, J C Lawrence wrote:
>> On Wed, 6 May 98 22:59:33 MST Chris
>> Gray<cg@ami-cg.GraySage.Edmonton.AB.CA> wrote:
>> An object is "animated" because of an by an event chain. Somewhere
>> back when, there was an "original" event which started the ball
>> rolling. That event ran, compleated, and logged a new event. That
>> one ran compleated, and logged a new event. And in this manner, ad
>> infinitum thru time until the present, the events have
>> daisy-chained, each one created by the one before, jerk-stepping
>> the mobile thru virtual reality in seeming animation.
> In S&S, once an event is logged by an executing transaction, it
> becomes completely independent of it's parent event. Thus failure
> of the parent event has no control over the execution of the child
> event. Placement of events for intentional chaining in mudcode is
> critical.
Perhaps I should put a large red button on the chest of every mobile
with a "restart" label. Umm, perhaps that should be a "Start" button
with a happy Mick Jagger tune when pressed?
In essence that is how the mobile will be initially animated anyway.
<ponder>
Simpler:
Mobiles are animated by event chains.
It is possible to code events such that the probability of their
inability to execute is proximate to zero. It is definitely possible
eo ensure that an event is executable by an otherwise "happy
(logically sound etc) system.
Ergo. Just use a parallel watchdog event chain which periodically
checks up on the animation status of its ward mobile, and if missing,
reboots it.
Hurm.
SMMP -- Simple Monster^H^H^H^H^H^Hobile Monitoring Protocol.
Its not guaranteed, but it will work until your system gets *really*
ill. It would be fairly simple to provide a third level of
indirection with a register of monitor event chainsa long with a
check-monitors and restart-monitors feature for error recovery.
>> What would happen if one of those events utterly failed to
>> compleat? The mobile would die. Nothing would log a "new" event
>> for that mobile; nothing would animate it. There would be no
>> executing events to log future events to keep the process of change
>> going. It would just sit there, utterly dead, until something
>> _external_ came along and changed it.
> Is this problematic with your intended handling of uncaught
> exceptions.
Yes.
> In C&C it would appear your event chain would die, while in S&S the
> failed event would reschedule with the possibility of scheduling
> child events over and over. Is there no happy medium here?
I don't *think* so. The only time this occurs for me is when the code
is physically unable to execute due to internal error or similar.
> The only reason I happen to prefer it this way, is that it is
> immediately and visually apparent through my process list command.
> It has nasty side-effects for server thrashing however.
"Yeah, if things break the system becomes unusably slow," vs "Yeah, if
things break almost everything just turns off like the power had been
pulled, but you can still do things."
>> True. I do this by keeping state variables in the mobile object
>> (acutally they are activity masks and are thus used to limit
>> possible simultaneous action). Thus the digging chain, as you say,
>> runs in parallel with the "main" chain. The main chain keeps
>> popping to life, checks for validity and mostly finds that its
>> inapplicable due to the digging chain and goes back to sleep by
>> logging a new future event.
>>
> I suppose it is possible for a main/timer event to check on "dead"
> objects on a regular basis and reanimated them. Does this solve the
> problem or just hide failures in the application event model? Or is
> this simply a reincarnation of the Diku-esque big polling loop?
All three. It hides the failures, reincarnates a polling loop under
the covers, and doesn't solve the problem. Its a bandaide, but at
least with the advantage that it can be a really cheap bandaide (you
can run the state check every 30 minutes as vs every 30 seconds).
--
J C Lawrence Internet: claw@null.net
(Contractor) Internet: coder@ibm.net
---------(*) Internet: claw@under.engr.sgi.com
...Honourary Member of Clan McFud -- Teamer's Avenging Monolith...
On Wed, 13 May 1998 17:20:31 -5
Jon A Lambert<jlsysinc@ix.netcom.com> wrote:
> On 13 May 98, J C Lawrence wrote:
>> On Wed, 6 May 98 22:59:33 MST Chris
>> Gray<cg@ami-cg.GraySage.Edmonton.AB.CA> wrote:
>>
>> > [J C Lawrence:]
>>
>> >> What if this event daisy chain didn't start from a user command,
>> >> but was generated by a mobile attempting its normal business of
>> >> wandering the land? If the event chain dies with that failed
>> event >> the mobile itself "dies" -- there are no more events to
>> "animate" >> it.
>>
>> > Why must it die?
>>
>> There's some underlieing logic going on that mandates this: (I
>> expect you know this already from the discussions on this area a
>> little over a year ago).
>>
>> Events are the ONLY things that are capable of logging new events.
>> Translation: A successfully executed event is the only thing
>> capable of causing another event to be executed in the future.
>>
> Note that I handle this conceptually similar to you and will list
> the notable differences.
>> An object is "animated" because of an by an event chain. Somewhere
>> back when, there was an "original" event which started the ball
>> rolling. That event ran, compleated, and logged a new event. That
>> one ran compleated, and logged a new event. And in this manner, ad
>> infinitum thru time until the present, the events have
>> daisy-chained, each one created by the one before, jerk-stepping
>> the mobile thru virtual reality in seeming animation.
> In S&S, once an event is logged by an executing transaction, it
> becomes completely independent of it's parent event. Thus failure
> of the parent event has no control over the execution of the child
> event. Placement of events for intentional chaining in mudcode is
> critical.
>> What would happen if one of those events utterly failed to
>> compleat? The mobile would die. Nothing would log a "new" event
>> for that mobile; nothing would animate it. There would be no
>> executing events to log future events to keep the process of change
>> going. It would just sit there, utterly dead, until something
>> _external_ came along and changed it.
>>
> Is this problematic with your intended handling of uncaught
> exceptions. In C&C it would appear your event chain would die, while
> in S&S the failed event would reschedule with the possibility of
> scheduling child events over and over. Is there no happy medium
> here? The only reason I happen to prefer it this way, is that it is
> immediately and visually apparent through my process list command.
> It has nasty side-effects for server thrashing however. I have been
> thinking of only rescheduling on uncaught LOCK_FAIL exceptions.
> This would be similar to C&C's rescheduling on "Compare" failures.
> Still it is not a complete solution, although a safer one.
>> Yes, you could do multiple and parallel event chains as you discuss
>> below. But what happens if the "master" chain dies? Do you have a
>> watchman chain whose only purpose is to ensure that there is a
>> valid running master chain? What if the watchman dies?
>>
>> This is thorny problem -- solvable, but not elegant.
>>
>> > From a naive point of view, you want it to stop digging the canal
>> > because something prevented it from continuing. The digging event
>> > chain doesn't have to be the only event chain that exists for the
>> > NPC. It could have a normal chain, that, because it is currently
>> > digging, doesn't do things like wandering away, but can still do
>> > things like poses, simple interactions with PC's, etc. The
>> question > then becomes that of how the main chain knows that the
>> dig chain has > terminated.
>>
> This particular task does not sound to me like an atomically
> consistent transaction because it is a task that can be at an analog
> state. Thus the event chain should be breakable, through external
> state changes. Upon breaking the chain an event should be logged to
> message Bubba indicating that his digging had been interrupted, yet
> NOT rolled back. On an animated NPC an event should be logged to
> cause the NPC to make a decision on future activities, which may end
> up with the resumption of digging or starting some other chain of
> events (e.g. gathering wood ala Warcraft) or going to sleep and
> stopping to eat. :)
>> True. I do this by keeping state variables in the mobile object
>> (acutally they are activity masks and are thus used to limit
>> possible simultaneous action). Thus the digging chain, as you say,
>> runs in parallel with the "main" chain. The main chain keeps
>> popping to life, checks for validity and mostly finds that its
>> inapplicable due to the digging chain and goes back to sleep by
>> logging a new future event.
>>
> I suppose it is possible for a main/timer event to check on "dead"
> objects on a regular basis and reanimated them. Does this solve the
> problem or just hide failures in the application event model? Or is
> this simply a reincarnation of the Diku-esque big polling loop?
> -- --/*\ Jon A. Lambert - TychoMUD Internet:jlsysinc@ix.netcom.com
> /*\-- --/*\ Mud Server Developer's Page
> <http://www.netcom.com/~jlsysinc> /*\-- --/*\ "Everything that
> deceives may be said to enchant" - Plato /*\--
> -- MUD-Dev: Advancing an unrealised future.
--
J C Lawrence Internet: claw@null.net
(Contractor) Internet: coder@ibm.net
---------(*) Internet: claw@under.engr.sgi.com
...Honourary Member of Clan McFud -- Teamer's Avenging Monolith...
--
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