September 2003
- [TECH] Server Bottlenecks Jim Purbrick
- [TECH] Server Bottlenecks J C Lawrence
- [TECH] Server Bottlenecks Bruce Mitchener
- [TECH] Server Bottlenecks Jim Purbrick
- [TECH] Server Bottlenecks Bruce Mitchener
- [TECH] Server Bottlenecks J C Lawrence
- [TECH] Server Bottlenecks Roy Riggs
- [TECH] Server Bottlenecks Daniel.Harman@barclayscapital.com
- [TECH] Server Bottlenecks Jim Purbrick
- [TECH] Server Bottlenecks Sean Kelly
- [TECH] Server Bottlenecks Mike Shaver
- [TECH] Server Bottlenecks Eamonn O'Brien
- [TECH] Server Bottlenecks Daniel.Harman@barclayscapital.com
- [TECH] Server Bottlenecks ceo
- [TECH] Server Bottlenecks ceo
- [TECH] Server Bottlenecks Lazarus
- [TECH] Server Bottlenecks Jeff Thompson
- [Tech] Garbage collection Brian Hook
- [Tech] Garbage collection Lars Duening
- [Tech] Garbage collection Bruce Mitchener
- [Tech] Garbage collection Jay Carlson
- TECH: Question about Bartle's new book Christer Enfors
- TECH: Question about Bartle's new book Richard A. Bartle
- Generating Cities John Arras
- Load Testing a MUD sszretter@hotmail.com
- Load Testing a MUD Ren Reynolds
- Load Testing a MUD Ben Greear
- Load Testing a MUD Daniel.Harman@barclayscapital.com
- Load Testing a MUD Matthew D. Fuller
- Load Testing a MUD Marc Bowden
- Load Testing a MUD Lars Duening
- Load Testing a MUD Marc Bowden
- [DGN] Writing... a mud... erich-herz@uiowa.edu
- [DGN] Writing... a mud... Amanda Walker
- [DGN]: Ludicrous scheme. Yaka St.Aise
- [DGN]: Ludicrous scheme. Matt Mihaly
- [DGN]: Ludicrous scheme. Yaka St.Aise
- [DGN]: Ludicrous scheme. Michael Chui
- [DGN]: Ludicrous scheme. Amanda Walker
- [DGN]: Ludicrous scheme. Matthew Dobervich
- [DGN]: Ludicrous scheme. Justin Randall
- [DGN]: Ludicrous scheme. Yaka St.Aise
- [DGN]: Ludicrous scheme. Chris Duesing
- [DGN]: Ludicrous scheme. Crosbie Fitch
- [DGN]: Ludicrous scheme. Yaka St.Aise
- [DGN]: Ludicrous scheme. John Buehler
- [DGN]: Ludicrous scheme. Ola Fosheim Grøstad
- BIZ: Who owns my sword? Corpheous Andrakin
- BIZ: Who owns my sword? Scott Jennings
- BIZ: Who owns my sword? Matthew Dobervich
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Daniel Anderson
- BIZ: Who owns my sword? Mike Shaver
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Daniel Stahl
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Tamzen Cannoy
- BIZ: Who owns my sword? Mike Shaver
- BIZ: Who owns my sword? ceo
- BIZ: Who owns my sword? Nathan Yospe
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Linder Support Team
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Marian Griffith
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Michael Chui
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Paul Schwanz
- BIZ: Who owns my sword? J C Lawrence
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Amanda Walker
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Jeff Cole
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Jeff Cole
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Amanda Walker
- BIZ: Who owns my sword? Marian Griffith
- BIZ: Who owns my sword? Jeff Cole
- BIZ: Who owns my sword? Michael Chui
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Marian Griffith
- BIZ: Who owns my sword? Jeff Cole
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? ceo
- BIZ: Who owns my sword? ceo
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Scott Jennings
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Daniel Anderson
- BIZ: Who owns my sword? Scott Jennings
- BIZ: Who owns my sword? ren@aldermangroup.com
- BIZ: Who owns my sword? Dave Rickey
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Baar - Lord of the Seven Suns
- BIZ: Who owns my sword? Michael Chui
- BIZ: Who owns my sword? Ryan S. Dancey
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Hans-Henrik Staerfeldt
- BIZ: Who owns my sword? John Buehler
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Dave Rickey
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Matt Mihaly
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Amanda Walker
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Amanda Walker
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Amanda Walker
- BIZ: Who owns my sword? Marian Griffith
- BIZ: Who owns my sword? Chris Mancil
- BIZ: Who owns my sword? Zach Collins {Siege}
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Crosbie Fitch
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Ren Reynolds
- BIZ: Who owns my sword? Tamzen Cannoy
- Why doesn't Lineage count as the most popular MMOG ever? Daniel Anderson
- Why doesn't Lineage count as the most popular MMOG ever? Koster, Raph
- Why doesn't Lineage count as the most popular MMOG ever? Scott Jennings
- Why doesn't Lineage count as the most popular MMOG ever? Martin Bassie
- Why doesn't Lineage count as the most popular MMOG ever? Chris Holko
- Why doesn't Lineage count as the most popular MMOG ever? burra@alum.rpi.edu
- Why doesn't Lineage count as the most popular MMOG ever? Scott Jennings
- Why doesn't Lineage count as the most popular MMOG ever? Daniel Anderson
- Why doesn't Lineage count as the most popular MMOG ever? Matt Mihaly
- Why doesn't Lineage count as the most popular MMOG ever? Threshold RPG
- Why doesn't Lineage count as the most popular MMOG ever? Jason Smith
- MUD-Dev Digest, Vol 4, Issue 5 Jessica Mulligan
- [Tech] Functional languages Brian Hook
- [Tech] Functional languages ceo
- [Tech] Functional languages Brian Hook
- [Tech] Functional languages Kim
- [Tech] Functional languages J C Lawrence
- [Tech] Functional languages Joshua Judson Rosen
- [Tech] Functional languages sproctor@ccs.neu.edu
- SW:G Matt Mihaly
- Grief teaching? (Was: Why doesn't Lineage count asthe most pop burra@alum.rpi.edu
- Grief teaching? (Was: Why doesn't Lineage count as the most popular MMOG ever?) ghovs
- Grief teaching? (Was: Why doesn't Lineage count as the most popular MMOG ever?) Daniel.Harman@barclayscapital.com
- R: MUD-Dev Digest, Vol 4, Issue 5 Ghilardi Filippo
- Ghostmode (was: SW:G) Lars Duening
- Ghostmode (was: SW:G) Michael Tresca
- Ghostmode (was: SW:G) Marian Griffith
- MUD-Dev Digest, Vol 4, Issue 5 Crosbie Fitch
- BIZ: Who holds your cahonas in their hand? (runs your infrastructure...; ) ceo
- ghost mode (was SW:G) Tess Lowe
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Vladimir Cole
- ghost mode (was SW:G) Erik Bethke
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Erik Bethke
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Corpheous Andrakin
- ghost mode (was SW:G) Mike Shaver
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Vladimir Cole
- ghost mode (was SW:G) Lars Duening
- ghost mode (was SW:G) Peter Harkins
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Lars Duening
- ghost mode (was SW:G) Marian Griffith
- ghost mode (was SW:G) Scott Moore
- ghost mode (was SW:G) Justin Coleman
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) David Cooksey
- ghost mode (was SW:G) Marian Griffith
- ghost mode (was SW:G) Rayzam
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Rayzam
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Marian Griffith
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Rayzam
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Corpheous Andrakin
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Spot
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Acius
- ghost mode (was SW:G) Rayzam
- ghost mode (was SW:G) J C Lawrence
- ghost mode (was SW:G) Mike Shaver
- ghost mode (was SW:G) Smith, David {Lynchburg}
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- ghost mode (was SW:G) Eli Stevens
- ghost mode (was SW:G) Rayzam
- ghost mode (was SW:G) John Buehler
- ghost mode (was SW:G) Vladimir Cole
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Mike Shaver
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Daniel.Harman@barclayscapital.com
- [DGN]: Ludicrous speed. Chris Duesing
- [DGN]: Ludicrous speed. Michael Chui
- [DGN]: Ludicrous speed. Yaka St.Aise
- [DGN]: Ludicrous speed. Michael Chui
- [DGN]: Ludicrous speed. Yaka St.Aise
- ghost mode (was SW:G) Xyrrus
- Ghost Mode Pat Ditterline
- Player malleable worlds (was Expected value and standard deviation) Crosbie Fitch
- Player malleable worlds (was Expected value and sta ndard deviation) Daniel.Harman@barclayscapital.com
- Player malleable worlds (was Expected value and standard deviation) John Buehler
- Player malleable worlds (was Expected value and sta ndard deviation) Katie Lukas
- Player malleable worlds (was Expected value and sta ndard deviation) Paul Schwanz
- Player malleable worlds (was Expected value and sta ndard deviation) Amanda Walker
- Player malleable worlds (was Expected value and standard deviation) Crosbie Fitch
- Player malleable worlds (was Expected value and sta ndard deviation) Matt Mihaly
- Player malleable worlds (was Expected value and standard deviation) Kerry Fraser-Robinson
- Player malleable worlds (was Expected value and sta ndard deviation) Daniel.Harman@barclayscapital.com
- Player malleable worlds (was Expected value and standard deviation) Torgny Bjers
- Player malleable worlds (was expected value and standard deviation) Chanur Silvarian
- Player malleable worlds (was expected value and standard deviation) Corpheous Andrakin
- Player malleable worlds (was expected value and sta ndard deviation) Daniel.Harman@barclayscapital.com
- Player malleable worlds (was Expected value and sta ndard deviation) Sean Kelly
- Player malleable worlds (was Expected value andstandard deviation) Richard
- ghost mode Tess Lowe
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode Mike Shaver
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode Amanda Walker
- ghost mode Vincent Archer
- ghost mode Tess Lowe
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode Amanda Walker
- ghost mode Corey Crawford
- ghost mode Amanda Walker
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode ceo
- ghost mode Rayzam
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode Rayzam
- ghost mode Tess Lowe
- ghost mode David Cooksey
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode Tess Lowe
- ghost mode Amanda Walker
- ghost mode Amanda Walker
- ghost mode Daniel.Harman@barclayscapital.com
- ghost mode Amanda Walker
- ghost mode Matt Mihaly
- ghost mode Marian Griffith
- ghost mode Tess Lowe
- ghost mode Richard
- Seamlessly Distributed Online Environments Draymoor {Philip Loguinov}
- Seamlessly Distributed Online Environments Bo Zimmerman
- Seamlessly Distributed Online Environments Frank Crowell
- Seamlessly Distributed Online Environments Crosbie Fitch
- Seamlessly Distributed Online Environments J C Lawrence
- Seamlessly Distributed Online Environments Crosbie Fitch
- Seamlessly Distributed Online Environments J C Lawrence
- Seamlessly Distributed Online Environments Crosbie Fitch
- Seamlessly Distributed Online Environments J C Lawrence
- Seamlessly Distributed Online Environments J C Lawrence
- Seamlessly Distributed Online Environments Paolo Piselli
- Seamlessly Distributed Online Environments Crosbie Fitch
- Seamlessly Distributed Online Environments J C Lawrence
- Seamlessly Distributed Online Environments Crosbie Fitch
- Seamlessly Distributed Online Environments ceo
- Seamlessly Distributed Online Environments Crosbie Fitch
- Seamlessly Distributed Online Environments Pat Ditterline
- Seamlessly Distributed Online Environments Brent P. Newhall
- Seamlessly Distributed Online Environments Hans-Henrik Staerfeldt
- Seamlessly Distributed Online Environments Roy Riggs
- Seamlessly Distributed Online Environments Sean Kelly
- Rewarding Beta Testers (There's Pricing Deal) Vladimir Cole
- Rewarding Beta Testers (There's Pricing Deal) Amanda Walker
- Rewarding Beta Testers (There's Pricing Deal) Derek Licciardi
- Rewarding Beta Testers (There's Pricing Deal) Amanda Walker
- Rewarding Beta Testers (There's Pricing Deal) Samurai Cat @ Catacombs
- Rewarding Beta Testers (There's Pricing Deal) David Loving
- Rewarding Beta Testers (There's Pricing Deal) Samurai Cat! @ Catacombs
- Rewarding Beta Testers (There's Pricing Deal) Daniel.Harman@barclayscapital.com
- Rewarding Beta Testers (There's Pricing Deal) Walton, Gordon
- Rewarding Beta Testers (There's Pricing Deal) David Kennerly
- Rewarding Beta Testers (There's Pricing Deal) Daniel.Harman@barclayscapital.com
- variable difficulty levels (was: ghost mode) Corey Crawford
- variable difficulty levels (was: ghost mode) David Snyder
- variable difficulty levels (was: ghost mode) Daniel.Harman@barclayscapital.com
- variable difficulty levels (was: ghost mode) Michael Tresca
- ghost mode Amanda Walker
- Player malleable worlds (was Expected value andstandard deviation) Ren Reynolds
- R: BIZ: Who owns my sword? Ghilardi Filippo
- DGN: Why give the players all the numbers? Chanur Silvarian
- DGN: Why give the players all the numbers? Joshua Uyehara
- DGN: Why give the players all the numbers? Lars Duening
- DGN: Why give the players all the numbers? Rayzam
- DGN: Why give the players all the numbers? Brian Hook
- DGN: Why give the players all the numbers? J C Lawrence
- DGN: Why give the players all the numbers? Matt Mihaly
- DGN: Why give the players all the numbers? Zach Collins {Siege}
- DGN: Why give the players all the numbers? Matt Mihaly
- DGN: Why give the players all the numbers? Daniel.Harman@barclayscapital.com
- DGN: Why give the players all the numbers? Matt Mihaly
- DGN: Why give the players all the numbers? Sheela Caur'Lir
- DGN: Why give the players all the numbers? Lee Sheldon
- DGN: Why give the players all the numbers? David Cooksey
- DGN: Why give the players all the numbers? Lee Sheldon
- DGN: Why give the players all the numbers? Daniel.Harman@barclayscapital.com
- DGN: Why give the players all the numbers? Rayzam
- DGN: Why give the players all the numbers? Kwon J. Ekstrom
- DGN: Why give the players all the numbers? Ben Chambers
- DGN: Why give the players all the numbers? Russ Whiteman
- DGN: Why give the players all the numbers? Ben Chambers
- DGN: Why give the players all the numbers? Russ Whiteman
- DGN: Why give the players all the numbers? Daniel.Harman@barclayscapital.com
- DGN: Why give the players all the numbers? Amanda Walker
- DGN: Why give the players all the numbers? Derek Licciardi
- DGN: Why give the players all the numbers? Chanur Silvarian
- DGN: Why give the players all the numbers? Mike Shaver
- DGN: Why give the players all the numbers? Sheela Caur'Lir
- DGN: Why give the players all the numbers? Amanda Walker
- DGN: Why give the players all the numbers? Chanur Silvarian
- ghost mode (was SW:G) Crosbie Fitch
- ghost mode (was SW:G) Michael Tresca
- play styles and difficulty settings ceo
- BIZ: Markee Dragon katie@stickydata.com
- BIZ: Markee Dragon Mike Shaver
- BIZ: Markee Dragon Frank Crowell
- BIZ: Markee Dragon Frank Crowell
- BIZ: Markee Dragon Derek Licciardi
- Meta-games (not META list ;)) ceo
- Meta-games (not META list ;)) Crosbie Fitch
- Meta-games (not META list ;)) ceo
- Meta-games (not META list ;)) Mark Cheverton
- Meta-games (not META list ;)) Michael Sellers
- Meta-games (not META list ;)) ceo@grexengine.com
- Meta-games (not META list ;)) ceo
- [DGN]: Ludicrous speed. Yaka St.Aise
- variable difficulty levels Matt Mihaly
- ghost mode (was SW:G) Amanda Walker
- ghost mode (was SW:G) Freeman, Jeff
- Terra Nova, virtual world blog Castronova, Edward
- R: Rewarding Beta Testers (There's Pricing Deal) Ghilardi Filippo
- ghost mode Amanda Walker
- [list] DGN: Why give the players all the numbers? Scion Altera
- [list] DGN: Why give the players all thenumbers? Rayzam
- [list] DGN: Why give the players all the numbers? Marian Griffith
- [list] DGN: Why give the players all thenumbers? John Buehler
- ghost mode ceo
- Class hierarchies for objects Brian Hook
- Class hierarchies for objects Bo Zimmerman
- A Theory of Fun Paul Schwanz
- The State of Play: On the Second Life Tax Revolt J C Lawrence
- The State of Play: On the Second Life Tax Revolt F. Randall Farmer
- Hidden Character Attribs Spot
- Hidden Character Attribs Owen Matt
- Hidden Character Attribs Sheela Caur'Lir
- Hidden Character Attribs J C Lawrence
- size Matt Mihaly
- size Daniel.Harman@barclayscapital.com
- size Sheela Caur'Lir
- size Daniel.Harman@barclayscapital.com
- size Matt Mihaly
On Wed, 24 Sep 2003 Daniel.Harman@barclayscapital.com wrote:
> From: Matt Mihaly [mailto:the_logos@ironrealms.com]
>> EQ probably does have as many players as all text muds
>> combined. But this isn't mud-player. It's mud-dev. It's also not
>> EverquestWannabe-dev. There's a troubling (if understandable)
>> and ever-increasing trend on the list to focus on a handful of
>> games and worse, a handful of games most of which don't diverge
>> much from a single mold.
> That's not the fault of the people who've played these games
> though. Its with the people who haven't not posting here! Speaking
> personally, I just can't get excited by a text mud, but I've
> played most every Euro/American graphical MMO out there.
Oh, I totally understand that many people can't get into text muds
though it really is your loss if you're into gameplay over
eyecandy. The graphical MMOs are only JUST starting to do anything
I'd consider interesting gameplay wise (A Tale in the Desert, and
some of the crafting in SW:G for instance).
Mainly, I (and probably lots of other text mud types out there) get
annoyed by discussions that start out, "Wouldn't it be neat if
someone did <X>" when people have been doing <X> for years in text
MMOs.
> Anyway waiting anxiously for the Iron Realms game so I can use it
> as example fodder ;) I'm sure the EQ team are equally as tired of
> all the post-match analysis focussing on them!
Well, I have no doubt that the graphical game we're attempting to do
(I emphasize attempting. It's not a sure thing yet.) is not going to
live up to the depth of our text games. It's just too expensive and
too difficult to do on multiple world instantiations and with such
large populations of players, most of whom aren't interested in much
beyond whacking monsters.
--matt
- size Amanda Walker
- size Matt Mihaly
- size Sheela Caur'Lir
- size Sheela Caur'Lir
- A world without charity Eamonn O'Brien
- A world without charity Corpheous Andrakin
- A world without charity Eamonn O'Brien
- A world without charity Marian Griffith
- A world without charity Matt Mihaly
- A world without charity Mike
- A world without charity Eamonn O'Brien
- A world without charity Castronova, Edward
- A world without charity Erik Bethke
- A world without charity gbtmud
- A world without charity Dave Rickey
- A world without charity ceo@grexengine.com
- A world without charity Samurai Cat @ Catacombs
- A world without charity Crosbie Fitch
- A world without charity Ola Fosheim Grøstad
- A world without charity Jeff Crane
- A world without charity eric
- A world without charity David Cooksey
- A world without charity Eli Stevens
- A world without charity Michael Tresca
- A world without charity Ola Fosheim Grøstad
- A world without charity (was Discussion of MUD system design, development, and implementation) Chanur Silvarian
- In Norrath, Tattoine and Rubi-ka, Just What Are Your Legal Rights? Vladimir Cole
- C# as MUD Language, Linux as platform =?koi8-r?Q?=22?=Andrew Batyuck=?koi8-r?Q?=22=20?=< javaman@mail.ru>
- MUD-Dev Digest, Vol 4, Issue 30 Chanur Silvarian
- The Automated Online Role-Player Michael Tresca