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LambdaCore Database User`s Manual Version 1.3

1. property object prop name Command property object prop name initial value Command property object prop name initial value permissions Command property object prop name initial value permissions owner Command Adds a new property named prop name to the named object The initial value is given by the second argument if present it defaults to 0 Normally a property is created with permissions rc and owned by whoever types the command However you may also specify these explicitly using the third and fourth forms Only wizards can create properties with owners other than themselves property can be abbreviated as prop rmproperty object prop name Command Removes the named property from the named object rmproperty may be abbre viated as rmprop Chapter 14 Using Tasks 48 14 Using Tasks A task is an execution of a MOO program There are three ways for tasks to be created in LambdaMOO e Every time a player types a command a task is created to execute that command we call these command tasks e Whenever a player connects or disconnects from the MOO the server starts a task to do whatever processing is necessary such as printing out blip has connected to all of the players in the same room these are called server tasks e The fork statement in the programming language creates a task whose execution is delayed for at least some given number of seconds these are forked tasks T
2. If a new object verb is specified and actually turns out to exist that object verb becomes the default for subsequent compilations save note object Command save lobject property Command This is a note editor command It installs the freshly edited text If note or ob ject property is specified text is installed on that note or property instead of the original one In addition the new note or property becomes the default for future save commands subj ect text Command This is a mail editor command It is used to specify a Subject line for your message If text is the Subject line is removed Chapter 12 The MOO Editor 42 to recipients Command This is a mail editor command Specifies a new set of recipients the To line for your message Recipient names not beginning with are matched against the list of players Recipient names beginning with are interpreted as mailing lists archives other types of non person addresses and are matched against all such publically available objects If the list you want to use isn t in the database i e isn t located in the database mail_agent you need to refer to it by object id also to recipients Command This is a mail editor command Adds additional recipients to the To line of your message Same rules apply as for the to command pri nt Command This is a mail editor command Print your message as it is going to appear at the far end send Command This is a m
3. add entrance exit object number Command Add the exit with the given object number as a recognized entrance to the current room that is one whose use is not considered teleportation Usually dig does this for you but it doesn t if you don t own the room in question Instead it tells you the object number of the new exit and you have to find the owner of the room and get them to use the add entrance command to link it up exits Command Prints a list of all conventional exits from the current room but only if you own the room A conventional exit is one that can be used simply by uttering its name like east entrances Command Prints a list of all recognized entrances to the current room but only if you own the room A recognized entrance is one whose use is not considered to be teleportation Chapter 8 Notes and Letters 26 8 Notes and Letters Notes and letters are objects that can have text written on them to be read later They are useful for leaving messages to people or for documenting your creations Note that like most objects only the owner of a note can recycle it If you d like to make it possible for a reader of your note to destroy it this is a common desire for notes to other individual players then you might want to look at using a letter instead 8 1 Using Notes You can make a note by creating a child of the standard note note The following commands are available for interacting with
4. for example by the gripe command which uses the MOO Mail system to deliver gripes to the game administrators The following commands are used to activate portions of the MOO mail system mail seeing a table of contents for your collection of email messages read reading individual messages in your collection next reading the next message in your collection prev reading the previous message in your collection send composing and sending a message to other players answer replying to one of the messages in your collection rmmail discarding one or more messages from your collection renumber renumbering the messages in your collection mail Command mail new Command Shows a table of contents for your MOO email message collection You are notified when you connect to the MOO if there are any such messages A little arrow indicates the mail system s notion of your current message The first form lists all of your messages the second form lists all messages after your current message If you have a large number of mail messages you can give arguments so that mail only lists the messages you re interested in The general format is mail message sequence where message sequence is some combination of the following cur the current message new all messages after the current message Chapter 6 The MOO Mail System 17 A where is a number the message numbered if there is one HA all m
5. 8 lines above the insertion point to 8 lines below it unless this runs up against the beginning or end of file in which case we just take the first or last 16 lines or just 1 if there aren t that many ins ert ins text Command Command Many editor commands refer to an insertion point which is usually the place right below where the most recent line was inserted The insertion point should really be thought of as sitting between lines In listings the line above the insertion point is marked with _ while the one below is marked with The insert command when given an argument sets the insertion point If text is provided a new line will be created and inserted as with say ins both here and in other commands that require specifying an insertion point e g copy move can be one of n above line n Chapter 12 The MOO Editor 39 n above line n n below line n at the end before the last line n n lines before the end the current insertion point i e insert is a no op n n lines below the current insertion point n n lines above the current insertion point For the truly perverse there are other combinations that also work due to artifacts of the parsing process but these might go away A single dot is the same as insert without any arguments ie start insertion at the current insertion point n ext n text Command Moves the insertion point do
6. ECULON ccoo ai leg EE Qoremove fail isp ic ce kes eG iaa QOotake_failed ee eee Gotake succeded cc eee eee Cpage absent nia ieee eri eee ae E nE Eis age Eh enn re rra Opage OFA PIN cir RER RR RT e Ipar anod a opie adieu SE AE deh Bt erreneren Ae WEE essed eae cess Cremove Tallinn keels dee Be dens ies tia 5l 11 49 50 29 46 11 33 33 16 50 29 22 17 30 26 30 32 31 31 23 29 Verb Index renam ico bl ies 21 ed 18 A EA EE EE e sy donee 17 Ormond 18 OrMproperty ENEE nepa ii e 47 O 45 Gl A4 nn e geed eee eg dda E EE A 17 Geetbome 2 2 g RR aR pes RA R R A EA 4 QS OWE ie ici ta KEEN e 44 OSU ESE 2 Sigg ira ee ae 11 O EE 12 Otake Eaa ed a ied Sakis si ba 30 Wt ake succeeded ooo 30 e Ge EE IN TEE a dd 10 Mi EE 33 Gunlock f r TTT 33 WEE 45 EE 50 e nr EE 23 QWherELS og idleness ak ged boos ews 12 OHO E T rita cane E 12 anre ebe EE A 8 PSS id vate kin eae bo eee Oe oes KY D GT EEN 20 G TE a o Ee eege 39 eT E EE 26 52 QUOD EE 6 E OGL EE 41 GE 10 38 Geh tii ia te 26 GER 26 O eg ban tenes has Leer eee ele eee ts 46 exam yd du ds Se LT eave many eee T OXAMING 2 crea ga Rene sca hess eee Wat ene os 7 F ERG e aR O 39 KE EE EE 40 ESA idas E 6 PAVE ir e 6 Ea a A ae ae ele ies 5 H Pang a esos AAA ARRE eee RA da is aaa a dee ERS 6 HOP EE 3 belp intornation 3 ng 8522405 ANE es dcac af Ra E 5 I INS EL Gi wed Geek a a 38 ANS OE ia na See ben Gana
7. Interacting With Other Players There are several commands available to allow you to communicate with your fellow players Other commands are available to affect the way communication occurs The following list shows the commands used for these functions say talking to the other connected players in the room whisper talking privately to someone in the same room page yelling to someone anywhere in the MOO emote non verbal communication with others in the same room gag listgag ungag screening out noise generated by certain other players news reading the wizards most recent set of general announcements Ogripe sending complaints to the wizards typo Obug Cidea Csuggest sending complaints ideas to the owner of the current room whereis locating other players who finding out who is currently logged in mail the MOO email system paranoid check sweep the facilities for detecting forged messages and eavesdropping 4 1 Communicating With Other Players Several commands are available for communicating with other players in the way you might do in real life say anything Command anything Command Says anything out loud so that everyone in the same room hears it This is so commonly used that there s a special abbreviation for it amy command line beginning with a double quote is treated as a say command For example suppose that blip types the following command Chapter
8. Notification will take place regardless of whether or how your mail is forwarded Thus in the previous example 42 mail_notify 43 means that ur blip will be told whenever blip is sent new mail Chapter 6 The MOO Mail System 19 6 1 3 mail_options This property is a list of options that is consulted by send and Canswer to determine how messages should initially be composed The following options are available for Canswer sender replies go only to the message s author From line all replies go to everyone who got the original From To lines incl include original message in the body of your reply noincl don t include original message in the body of your reply The following option affects the behaviour of send and Canswer replyto list of people A Reply to field will be added containing these people So for example if ur blip usually wants his replies to go to everyone and always start out with the text of the original included he should do 43 mail_options all incl Chapter 7 Building and Creating Objects 20 7 Building and Creating Objects There are a number of commands available to players for building new parts of the MOO The primary means for players to extend the MOO is for them to create new objects with interesting behavior There are convenient commands for creating and recycling objects and for keeping track of the objects you ve created The following commands are us
9. given The following table shows what permission bits are allowed for each form of the command object permissions r W property permissions fW C verb permissions r w x d See the LambdaMOO Programmer s Manual for their meanings To clear all of the permissions for an object verb or property use as the second argument chparent object to new parent Command Changes the parent of the named object to be the named parent The object acquires all the verb and property definitions of its parent as well as the parent s values for any newly defined properties The parent object must be readable by the player in order to use it as a new parent Chapter 13 Dealing with Verbs and Properties 45 13 1 Dealing with Verbs The following commands are used for creating and manipulating verbs verb object verb name s Command verb object verb name s dobj prep iobj Command verb object verb name s dobj prep iobj permissions Command verb object verb name s dobj prep iobj permissions owner Command Adds a new verb with the given name s to the named object If there are multiple names they should be separated by spaces and all enclosed in quotes verb foo bar baz mum ble The direct and indirect object specifiers dobj and iobj must be either none this or any their meaning is discussed in the LambdaMOO Programmer s Manual The preposition specifier prep must be either none any or
10. mailtorward ease 665 2 s540 004 954e4bed edna se 18 6 1 2 mal noh 18 6 1 3 mail_options 0 engi cece cece eee 19 7 Building and Creating Objects 20 7 1 Rooms and Faits 23 R Notes and Letters sese 20 ST Using Notes TTT 26 8 2 Using Letters saa a cece EP SEERE PEREAS 21 9 Using Containers ss e e e e e e 28 10 Messages on ObjectS 29 10 1 Setting Messages for Exits 29 10 2 Setting Messages for TnRS 30 10 3 Setting Messages for Containers e 3l 11 Using Locks With Objects 33 SR iii td ede eae 34 11 1 1 Key Beptesentation 0 ee eee 34 12 The MOO Editor ege rada sees 36 12 1 Editor Ranges rr 37 12 2 Editor Commande 37 13 Dealing with Verbs and Properties 44 13 1 Dealing with Verbs 1 3494 0e0 dada ARAR da pet 45 13 1 1 Prepositions 0 0 eee eee eee eee 47 13 2 Dealing with Properties 0c cee eee eee eee 47 14 Using Tasks 2c ccveevedacses seers deans 48 15 Miscellaneous o oooooooooo ooo 50 Verb Index a cage ae base caia R RR RR R NN 51
11. notes read note Command Prints the text written on the named object usually a note or letter Some notes are encrypted so that only certain players may read them write any text on note Command Adds a line of text to the named note or letter Only the owner of a note may do this erase note Command Deletes all of the text written on a note or letter Only the owner of a note may do this delete line number from note Command Removes a single line of text from a note The first line of text is numbered 1 the second is 2 and so on Only the owner of a note may do this notedit note object Command notedit object property Command Enters the MOO Note Editor to edit the text on the named object For the first form note object must be a descendant of note For the second form object property can be any text valued i e list of strings property on any object The standard MOO editor is used to perform editing operations encrypt note with key expression Command Restricts the set of players who can read the named note or letter to those for whom the given key expression is true Only the owner of a note may do this decrypt note Command Removes any restriction on who may read the named note or letter Only the owner of a note may do this Chapter 8 Notes and Letters 27 8 2 Using Letters A letter is a special kind of note with the added feature that it can be recycled by anyone who can read it This is often useful for no
12. object to see if that object meets the constraint To do so we consider the candidate object along with every object it contains and the ones those objects contain and so on to be true and all other objects to be false As an example suppose the player blip wanted to lock the exit leading to his home so that only he and the holder of his magic wand could use it Further suppose that blip was object 999 and the wand was 1001 blip would use the lock command to lock the exit with the following key expression me magic wand and the system would understand this to mean 999 1001 That is players could only use the exit if they were or were carrying either 999 or 1001 To encrypt a note so that it could only be read by blip or someone carrying his book his bell and his candle blip would use the encrypt command with the key expression me bell amp amp book amp amp candle Finally to keep players from taking a large gold coffin through a particularly narrow exit blip would use this key expression coffin That is the expression would be false for any object that was or was carrying the coffin There is one other kind of clause that can appear in a key expression object This is evaluated by testing whether the given object is unlocked for the candidate object if so this clause is true and otherwise it is false This allows you to have several locks all sharing some single other one
13. object name or number Command Destroys the indicated object utterly and irretrievably Naturally you may only do this to objects that you own quota Command Each player has a limit as to how many objects that player may create called their quota Every object they create lowers the quota by one and every object they recycle increases it by one If the quota goes to zero then that player may not create any more objects unless of course they recycle some first The quota command prints out your current quota To get a larger quota talk to a wizard They will take a look at what you ve done with the objects you ve built so far and make a determination about whether or not it would be a net gain for the MOO community if you were to build some more things If so they will increase your quota if not they will try to explain some ways in which you could build things that were more useful entertaining or otherwise interesting to other players Chapter 7 Building and Creating Objects 22 The quota mechanism is intended to solve a long standing problem in many MUDs database bloat The problem is that a large number of people build a large number of dull objects and areas that are subsequently never used or visited The database becomes quite large and difficult to manage without getting substantially more in teresting With the quota system we can make it possible for players to experiment and learn while simultaneously keepin
14. one of the prepositional phrases possible a prepositional phrase with more than one word must be enclosed in quotes All three specifiers default to none It is also possible to specify the new verb s permissions and owner as part of the same command rather than having to issue separate chmod chown commands using the third and fourth forms above permissions are as with chmod i e must be some subset of rwxd They default to rxd specifying w for a verb is highly inadvisable The owner defaults to the player typing the command only wizards can create verbs with owners other than themselves rmverb object verb name Command Removes the named verb from the named object args object verb name dobj Command args object verb name dobj prep Command args object verb name dobj prep iobj Command Changes the direct object preposition and or indirect object specifiers for the named verb on the named object Any specifiers not provided on the command line are not changed The direct and indirect object specifiers dobj and iobj must be either none this or any The preposition specifier prep must be either none any or one of the prepositional phrases that are possible program object verb name Command Provides or changes the MOO program associated with the named verb on the named object This command works differently from all other MOO commands in that it actua
15. session and any changes q uit Command done Command pause Command Leaves the editor If you have unsaved text it will be there when you return and in fact you will not be able to do anything else with this editor until you abort or save the text Chapter 12 The MOO Editor 41 reply to recipients Command This is a mail room command It reports the current contents of the Reply to field of your message With arguments adds or changes the Reply to field When someone answers a message the Reply to field is checked first when de termining to whom the reply should be sent To clear the Reply to field enter the command reply to edit object verb Command This is a verb editor command It changes what verb you are editing and loads the code for that verb into the editor Equivalent to edit object verb edit note object Command edit object property Command This command is used for both note and verb editors It changes to a different note or a different object text property and loads its text into the editor These are equivalent to notedit note or notedit object property respectively For both the verb editor and note editor commands object will match on the room you came from though if the room you came from was another editor then all bets are off compile as object verb Command This is a verb editor command It installs the new program into the system if there are no syntax errors
16. soon to be old password as the first argument Your password is stored in an encrypted form in the MOO database in principle not even the wizards can tell what it is though they can change it of course sethome Command Sets your designated home see help home to be the room you re in now If the current room wouldn t allow you to teleport in then the sethome command nicely refuses to set your home there This avoids later perhaps unpleasant surprises Chapter 3 Exploring and Interacting With the Virtual World 5 3 Exploring and Interacting With the Virtual World The main purpose of the core classes in the LambdaCore database is to allow players to construct and explore a virtual world This involves moving from one room to another using designated pathways or exits and looking at objects and locations along the way The command given in this section are used for exploring the virtual world and interacting with the game administrators using news and gripe These verbs are defined by a variety of different classes 3 1 Movement The descriptions of most rooms outline the directions in which exits exist Typical directions include the eight compass points north south east west northeast southeast northwest and southwest up down and out To go in a particular direction simply type the name of that direction e g north up
17. whatever is usual for that command usually a line above or below the insertion point 12 2 Editor Commands The following commands are provided by the editor classes Those that are not generic are specifically marked so say text Command text Command Adds text to whatever you are editing The second form is equivalent to the first except in that it doesn t strip leading blanks off of text just as with the normal say and commands The added text appears as a new line at the insertion point The insertion point in turn gets moved so as to be after the added text For example gt first line Line 1 added Chapter 12 The MOO Editor 38 gt second line Line 2 added gt list 1 first line 4__2_ second line emote text Command text Command Appends text to the end of the line before the insertion point The second form is equivalent to the first except that it doesn t strip leading blanks off of text just as with the normal emote and commands The insertion point is left unmoved gt list 4 _37_ Hello there 1738 Oh I m fine gt how are you Appended to line 37 gt 7 Appended to line 37 gt list _37_ Hello there how are you 7387 Oh I m fine lis t range Command Prints some subset of the current verb text The default range is some reasonable collection of lines around the current insertion point currently this is 8_ 8 ie
18. when the other one is changed all of the locks change their behavior simultaneously The internal representation of key expressions as stored in key on every object for example is very simple and easy to construct on the fly 11 1 1 Key Representation The representation of key expressions is very simple and makes it easy to construct new keys on the fly Chapter 11 Using Locks With Objects 35 Objects are represented by their object numbers and all other kinds of key expressions are represented by lists These lists have as their first element a string drawn from the following set ga es ue Ea For the first two of these the list should be three elements long the second and third elements are the representations of the key expressions on the left and right hand sides of the appropriate operator In the third case the list should be two elements long the second element is again a representation of the operand Finally in the case the list is also two elements long but the second element must be an object number As an example the key expression 45 amp amp 7446 amp amp 47 1148 would be represented as follows amp k amp amp 45 46 11 47 48 Chapter 12 The MOO Editor 36 12 The MOO Editor One can always enter an editor by teleporting to it or you can use one of the commands provided edit object verb invokes the Verb Editor edits verb code not
19. 4 Interacting With Other Players 9 This is a great MOO He would see this printed on his terminal screen You say This is a great MOO Others in the same room see this blip says This is a great MOO whisper text to player Command This command sends the message yourname whispers text to you to player if they are in the room This is used to send a private message to a another player in the room The message is passed to player only No one else can hear or detect the message For example the command whisper Hello there to blip sends the following message to blip Ezeke whispers hello there to blip page player with text Command This verb is a player command used to send messages between players who are not physically located in the same room in the virtual world You can imagine a page to be a worldwide form of shouting Without an argument a message like You sense that blip is looking for you in The Venue Hallway is sent to the recipient of the page If an argument is given it is treated as a message to send to the other player This results in the recipient getting a message like You sense that blip is looking for you in The Hallway He pages Hello are you busy Paging is used primarily to attract the attention of a player or to pass short messages between players in different locations It is not intended to be used for conversation The following commands can be used to set messages referred to
20. Command Evaluates the given piece of MOO code and prints the resulting value If the MOO code begins with one of the MOO language keywords if for while fork or return or with the character then the entire piece of code is treated as the program for a verb with appended to the end Otherwise return is appended to the front and is appended to the end and that string is treated as the code for a verb In either case the resulting verb is invoked and whatever value it returns is printed For programmers this is such a mind bogglingly useful thing to do that there is a simple abbreviation for this command any command beginning with a semicolon is treated as a use of eval For example gt eval 3 4 gt for x in player aliases player tell x endfor Haakon 4 Wizard ArchWizard 30 31 for i in 1 10 1 01 i endfor return 1 411 2 3 4 5 6 T 8 9 10 we Chapter 13 Dealing with Verbs and Properties 47 13 list o Oo O Oo 1 1 Prepositions The complete list of prepositions recognized by the command line parser is shown in the below with using at to in front of in inside into on top of on onto upon out of from inside from over through under underneath beneath behind beside for about is as off off of 13 2 Dealing with Properties The following commands are used for dealing with properties
21. LambdaCore Database User s Manual Mike Prudence blip Simon Hunt Ezeke Floyd Moore Phantom Kelly Larson Zaphod Al Harrington geezer For LambdaMOO version 1 3 April 1991 Copyright 1991 Mike Prudence Simon Hunt Floyd Moore Kelly Larson Al Harrington Copies of the electronic source for this document can be obtained using anonymous FTP on the Internet At the site belch berkeley edu the files are pub moo LambdaM00 LamdaCoreManual several different file formats are provided including Texinfo plain text and Postscript Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies Permission is granted to copy and distribute modified versions of this manual under the con ditions for verbatim copying provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one Permission is granted to copy and distribute translations of this manual into another lan guage under the above conditions for modified versions except that this permission notice may be stated in a translation approved by the author Introduction 1 Introduction The LambdaCore database provides the facilities needed to make a LambdaMOO server useful for Multi User Adventuring If you compare the LambdaMOO server to a piece of computer hardware then LambdaCore is the operating system needed
22. MOO mail system is given once you re in it You may hear back from the wizards eventually For example gt gripe The Fruitbat gt How come I can t ever see the fruitbat in the Venue Clock gt A frustrated player sends it and somewhat later the wizards reply with a note about being sure to look while the Clock is chiming typo text Command suggest text Command bug text Command idea text Command If text is given a one line message is sent to the owner of the room presumably about something that you ve noticed If text is not given we assume you have more to say than can fit comfortably on a single line the usual mail editor is invoked The con vention is that typo is for typographical errors on the room or objects found therein bug is for anomalous or nonintuitive behaviour of some sort and Gidea suggest for anything else 7 Ah well it could be worse Chapter 4 Interacting With Other Players 12 The usual mail editor is only invoked for this command when in rooms that allow free entry i e rooms that are likely to allow you back after you are done editing your message Otherwise these commands will require text and only let you do one line messages Most adventuring scenario rooms fall into this latter category 4 4 Locating Other Players in the Virtual World Two commands are available for finding out where other players are hiding in the virtual world as follows whereis player play
23. The name of the direction can usually be abbreviated to one or two characters e g n sw You can also type go direction to move this is particularly useful if you know you re going to type several movement commands in a row In addition to such vanilla movement some areas may contain objects allowing telepor tation and almost all areas permit the use of the home command to teleport you to your designated home A couple of other commands are available to allow movement from one place to another go direction Command Invokes the named exits in the named order moving through many rooms in a single command blip types gt goneeueese and moves quite rapidly north east east up east east south and east all in one command home Command Instantly teleports you to your designated home room Initially this room is the player_start room You can change your designated home using the sethome command 3 2 Commands for Manipulating Objects Objects usually have verbs defined on them that allow players to manipulate and use them in various ways Standard ones are get pick an object up and place it in your inventory drop remove an object from your inventory and place it in the room Chapter 3 Exploring and Interacting With the Virtual World 6 put take an object from your inventory and place it in a container give hand an object to some other player look see what an object looks like Y
24. ace with your own objects either defining new implementations of is_unlocked_for that match your particular circumstances or having your objects interpret their being locked in new ways The following commands are used to specify locks on objects Clock object with key expression Command Set a lock on object to restrict its use unlock object Command Clear any lock that might exist on the given object lock_for_open container with key expression Command Set the lock on container which restricts who can open it unlock_for_open container Command Clears the lock which restricts who may open container Chapter 11 Using Locks With Objects 34 11 1 Keys LambdaMOO supports a simple but powerful notation for specifying locks on objects encryption on notes and other applications The idea is to describe a constraint that must be satisfied concerning what some object must be or contain in order to use some other object The constraint is given in the form of a logical expression made up of object numbers connected with the operators and or and not written amp amp and for compati bility with the MOO programming language When writing such expressions though one usually does not use object numbers directly but rather gives their names as with most MOO commands These logical expressions called key expressions are always evaluated in the context of some particular candidate
25. ae 6 Inventory eree errer nittini eE E ws ESSE Medea i 6 JOIN as eee T weenie LE E aA ee SGi 40 KEE EE 40 L b ER Stee base eed ded nae Pho Sada aE 38 WOOK rodea AN 6 Verb Index PAI A AR eee A 39 pages EEN 9 AA 40 PEO Enano ici dada Head a 42 PUE te ees 6 53 SUD GE 39 BE AT RT as dek EE 41 EE 8 37 SEN ME 42 EE 42 SUD KEC a E E TAn aR ted Sede da Al subscribers ortesi hae a 42 leet Ee dE 6 DOC iia RRR E cee POS ded he d 6 MG Oise e la 42 UNSUDSCHIDE oia ae SA a Pe 42 MESE bin rn AAA Sg 40 EE eg ebe Nee ee 12 CR viete ds cod be a teas ete Bada 9 BIG ud sb arch Soe diese 42 Ce ib estar eed needed sre es bad ered 26 Table of Contents Tarode lt sosie ga R R R R ao RR ERE 1 1 The LambdaCore Player Commands 2 2 Commands That Affect Your Player 3 3 Exploring and Interacting With the Virtual K sis aiea e A 5 31 Moyenen A a is dra 5 3 2 Commands for Manipulating ObjectS 5 4 Interacting With Other Players 8 4 1 Communicating With Other Players 8 4 2 Gagging How to Ignore Other Players and Objects 10 4 3 Communicating With The Game Administrators 11 4 4 Locating Other Players in the Virtual World 12 4 5 Checking the Security of Your Communication 12 5 Using Pronoun Substitutions 14 6 The MOO Mail System 16 6 1 Mail Options 2 og Hoda aa ee de oe ee ee 18 6 1 1
26. ail editor command Send your message and exit the mail room If there are bogus addresses on your To line the message will not be sent It may be however that valid addresses on your To line will forward to other addresses that are bogus you ll receive warnings about these but in this case your message will still be delivered to those addresses that are valid who Command who rcpt Command This is a mail editor command Invokes mail_agent s mail forwarding tracer and determines who or what is actually going to receive your message The resulting list will not include destinations that will simply forward the message without receive_ message ing a copy for themselves The second form expands an arbitrary list of recipients for if e g you re curious about the members of particular mailing list showlists Command This is a mail editor command used to print a list of the publically available mailing lists or archives and other non player entities that can receive mail subscribe to list name Command subscribe name to list name Command This is a mail room command Add yourself to the given mailing list The second form adds arbitrary people to a mailing list You can only do this if you own the list or if it is listed as Public and you own whatever is being added Use the who command to determine if you are on a given mailing list unsubscribe from list name Command unsubscribe name from list name Command T
27. ave two addtional forms that are likely to be only of use to programmers help object verbname This is used to print any documentation strings that are present at the beginning of the program for that verb help foo_utils prints general information about one of the _utils objects e g string_utils list_utils etc which are all libraries of generally used verbs The commands and information usually abbreviated info are synonyms for help quit Command This command is used to disconnect from the MOO This breaks your network con nection and leaves your player sleeping Disconnecting in most parts of the MOO automatically returns your player to its designated home gender gender Command gender Command The first form with an argument defines your player to have the gender gender If gender is one of the standard genders e g male female neuter your various pronouns will also be set appropriately making exits and certain other objects behave more pleasantly for you The second form tells you the current definition of your player s gender your current pronouns and the complete list of standard genders Chapter 2 Commands That Affect Your Player 4 password old password new password Command Changes your player s password as typed in the connect command when you log in to the MOO to new password For security reasons you are required to type your current
28. by page page_origin message Command The page origin message determines how the recipient is told of your location The default value of this message is You sense that n is looking for you in 1 page_echo message Command The page echo message determines the response received by anyone who pages you The default value of this message is Your message has been sent page_absent message Command This message determines the response received by anyone who tries to page you when you aren t connected The default value of this message is jn is not currently logged in All of these undergo the usual pronoun substitutions except that in both cases the direct object 4d refers to the recipent of the page and the indirect object 317 refers to the sender Chapter 4 Interacting With Other Players 10 emote anything Command anything Command Announces anything to everyone in the same room prepending your name This is commonly used to express various non verbal forms of communication In fact it is so commonly used that there s a special abbreviation for it any command line beginning with is treated as an emote command For example if blip types the following wishes he were much taller Everyone in the same room would see the following message blip wishes he were much taller 4 2 Gagging How to Ignore Other Players and Objects Occasionally you may run into a situation in whic
29. d only works if you own the room entity from which the object is being ejected The form of the command Ceject from me suffices to get rid of some unwanted object in your inventory On any given room one may user the following commands to set the messages used for ejection ejection message Command This message is Printed to player issuing the Ceject command The default message is You expel d from i oejection message Command This message is Printed to others in the room from which the ejection occurs The default message is 4D is unceremoniously expelled from i victim_ejection message Command This message is Printed to the victim being ejected The default message is You have been expelled from i 7 1 Rooms and Exits Rooms and exits are the stuff from which the landscape of the virtual world is created A room is generally an instance of the generic room class also referred to as room An exit is an instance of the generic exit class exit An exit can be thought of as a one way tunnel leading from one room to another If you wish to have a two way exit you have to use two exits one going from the source to the destination and one going from the destination to the source The following commands are used for creating and managing rooms and exits dig new room name Command dig exit spec to new room name Command dig exit spec to old room object number Command This is the basic building
30. eating the exits you should write down their object numbers You must then get the owner of the other room to use add exit and add entrance to link your new exits to their room For example dig The Conservatory creates a new room named The Conservatory and prints out its object number dig north n to The North Pole creates a new room and also an exit linking the player s current location to the new room players would say either north or n to get from here to the new room No way to get back from that room is created dig west wleast e out to The Department of Auto Musicology creates a new room and two exits one taking players from here to the new room via the commands west or w and one taking them from the new room to here via east e or out dig up u to 7164 creates an exit leading from the player s current room to 7164 which must be an existing room add exit exit object number Command Add the exit with the given object number as a conventional exit from the current room that is an exit that can be invoked simply by uttering its name like east Usually dig does this for you but it doesn t if you don t own the room in question Instead it tells you the object number of the new exit and you have to find the owner of the room and get them to use the add exit command to link it up Chapter 7 Building and Creating Objects 25
31. ects 29 10 Messages on Objects Most objects have messages that are printed when a player succeeds or fails in manipu lating the object in some way Of course the kinds of messages printed are specific to the kinds of manipulations and those in turn are specific to the kind of object Regardless of the kind of object though there is a uniform means for listing the kinds of messages that can be set and then for setting them The messages command prints out all of the messages you can set on any object you own To set a particular message on one of your objects use a command with this form message name object is message where message name is the name of the message being set object is the name or number of the object on which you want to set that message and message is the actual text For example consider the leave message on an exit it is printed to a player when they successfully use the exit to leave a room To set the leave message on the exit north from the current room use the command leave north is You wander in a northerly way out of the room This class of commands automatically applies to any property whose name ends in _msg Thus in the example above the command is setting the leave_msg property of the named exit You can get such a command to work on new kinds of objects simply by giving the appropriate properties names that end in _msg Messages of this type are u
32. ed in the creation of objects dig conveniently building new rooms and exits create making other kinds of objects recycle destroying objects you no longer want quota determining how many more objects you can build count determining how many objects you already own audit listing all of your objects Oclasses listing all of the public classes available for your use move moving your objects from place to place They are described in detail in the following paragraphs create class name named names Command create parent object named names Command The main command for creating objects other than rooms and exits for which dig is more convenient The first argument specifies the parent of the new object loosely speaking the kind of object you re creating class name is one of the four standard classes of objects e note e Sletter e thing e container As time goes on more standard classes may be added If the parent you have in mind for your new object isn t one of these you may use the parent s name if it s in the same room as you or else its object number e g 1234 The names are given in the same format as in the Crename command as follows name alias alias or alternatively name and alias alias alias Chapter 7 Building and Creating Objects 21 describe object as description Command Sets the description string of object to description This is the string that is pr
33. edit note_object invokes the Note Editor edits note text notedit object prop invokes the Note Editor edits text property send list of recipients invokes the Mailer edits a mail message answer msg_number flags invokes the Mailer edits a reply This will transport you to one of several special rooms that have editing commands available These editors are admittedly not as good as EMACS but for those with no other editing capability on their host systems it is better than nothing In addition to the commands provided by the generic editor individual editors provide their own additional commands for loading text from places saving text to places and various specialized functions Note that a given editor only allows you one session at a time ie one verb one note or one mail message If you leave an editor without either aborting or compil ing saving sending the item you re working on that editor remembers what you are doing next time you enter it whether you enter it by teleporting or by using the appropriate com mand Note that editors are periodically flushed so if you leave stuff there for sufficiently long it will go away A player may have his own edit_options property which is a list containing one or more string flags from the following list quiet_insert suppresses those annoying Line n added or Appended messages that one gets in response to say or emote This is usefu
34. er Command whereis player player Command Returns the current location of each of the specified players whereis refers to each player s Qwhereis_location message to determine what should be printed This message defaults to AN Z is in 1 1 and the usual pronoun substitutions are done For example the default message could expand to blip 42 is in The Venue Manager s Office 47 who Command who player player Command The first form lists all of the currently connected players along with the amount of time they ve been connected the amount of time they ve been idle and their present location in the MOO The second form in which a list of player names is given shows information for just those players For any listed players that are not connected we show the last login time instead of the connect idle times who refers to the who_location on each of the players to be listed in order to determine what should be printed in the location column Pronoun substitu tions are done on this string in the usual manner The default value is l i e player location 4 5 Checking the Security of Your Communication There are several commands available that allow you to check that your communications with other players are secure The following commands are available sweep Command Used when you wish to have a private conversation and are concerned someone may be listening i
35. ertion point You do not need a space between the verb and the delimiter before str1 Bug If you omit the space and the first whitespace in str1 is a run of more than one space those spaces get treated as one m ove range to ins Command 5Moves the range of lines to place specified by ins If ins happens to be the current insertion point the insertion point is moved to the end of the freshly moved lines If the range of lines contains the insertion point the insertion point is carried over to the range s new location c opy range to ins Command Copies the specified range of lines to place given by ins If ins happens to be the current insertion point the insertion point moves to the end of the inserted lines join range Command joinliteral range Command This command combines the lines in the specified range Normally spaces are inserted and double space appears after periods and colons but joinliteral abbreviates to joinl supresses this and joins the lines as is range defaults to the two lines surrounding the insertion point fill range c Command This command combines the specified lines as in join and then splits them so that no line is more than c characters except in cases of pathological lines with very long words c defaults to 70 range defaults to the single line preceding the insertion point w hat Command Prints information about the editing session abort Command Abandons this editing
36. erty can be specified explicitly If your object has a foo property that is like this you need merely add a fooc in general propertyname c specifying the correct capitalization This will also work for player name s if you want to specify a capitalization that is different from your usual name For example Phantom makes a hand grenade with a customizable explode message Suppose someone sets grenade explode_msg to ZN LRT drops t on ip foot XT explodes L is engulfed in flames If the current location happens to be 1234 blip s house the resulting substitution may produce eg Phantom 42 drops grenade on his foot Grenade explodes Blip s house is engulfed in flames which contains an incorrect capitalization The name blip cannot be capitalized blip may remedy this by setting 1234 namec blip s house A special nore for programmers in programs use string_utils pronoun_sub Us ing the substitution n actually calls player title Q while name refers to player name directly Chapter 6 The MOO Mail System 16 6 The MOO Mail System The MOO email system allows you to send and receive messages to and from other players Whilst not approaching the complexity of a fully fledged email system it does allow players to send short messages between themselves normally on game related topics The Mail Room class defines a set of verbs that can be used by other MOO programs to send mail This is used
37. es along with short descriptions of the membership of each The second form prints an indented listing of that subset of the object parent child hierarchy containing the objects in the class es you specify move thing to place Command Move the specified object to the specified location This is not guaranteed to work in particular the object must agree to be moved and the destination must agree to allow the object in This is usually the case however The special case where thing is me is useful for teleporting yourself around If move doesn t work and you own the room where the object is located try using eject instead Chapter 7 Building and Creating Objects 23 eject object Command eject object from place Command This command is used to remove unwanted objects from places you own Players thus removed are unceremoniously dumped in the default player starting place Other kinds of objects get thrown into 1 or nothing Unlike move Geject does not check to see if the object wants to be moved and with the destination being what it is there is no question of the destination refusing the move either Generally you should only resort to eject if move doesn t work The first form of the command removes the object from the current room The second form removes the object from the specified place which in most cases you ll have to specify as an object number In either case this comman
38. essages in the given range if any last 4 the last messages the last messages You may use as many of these at once as sanity permits e g mail 1 4 7 last 10 2 3 15 cur read message number message number Command read Command Prints the contents of the indicated messages from your MOO email collection You get the message numbers for use here by typing the mail command which prints a table of contents for your entire MOO email collection If no arguments are given to read then the current message in your collection is printed In any case the current message after read finishes is the last one printed next Command Print the next message in your MOO email collection The mail system s notion of your current message is incremented Thus one can read all of one s new messages one by one simply by typing next repeatedly prev Command Print the previous message in your MOO email collection The mail system s notion of your current message is decremented Thus one can review all of one s previous messages one by one simply by typing prev repeatedly send recipient recipient Command Prepares for you to compose a MOO email message to the recipients named on the command line A recipient can be specified by giving a player name or object id or a followed by the name or object id of some non player mail recipient e g a mailing list or a mail folder A l
39. execute These commands are covered in the following section Oforked Command Gives a list of all of the forked tasks you own along with detailed information about each one The information includes the following Queue ID A numeric identifier for the task for use in killing it Start Time The time after which the task will begin execution Owner You if you re not a wizard Chapter 14 Using Tasks 49 Clock Clock ID Verb Line kill queue id The number of ticks left on the clock for the task right this mo ment if the task does not execute immediately this number will grow up toa maximum of 20 000 ticks It is possible for several tasks to share a single clock The clock ID is a numeric identifier for each clock so that you can tell if one is being shared The object and verb name of the code that forked the task The line number of the first statement that the task will exe cute when it starts Note that the code for the verb in question may have changed since the task was forked the forked task will use the version that was being executed when it was forked Command Immediately kills the forked task with the given numeric queue ID The forked command is useful for finding out these queue IDs Only the owner of a task may kill it Chapter 15 Miscellaneous 50 15 Miscellaneous The following verbs are useful but not easily categorisable version Command Prints out the vers
40. g random building to acceptable levels It is expected that some will find the quota system distasteful or otherwise con troversial It was invented by Haakon and he is always interested in hearing your constructive comments suggestions and protests count Command Prints out the number of objects you own Do not be surprised if this is one larger than you think it should be remember that your player object is owned by you as well even though you didn t create it in the usual way audit Command audit player Command audit player from number Command The first form prints out a list of every object you own giving each one s name and object number The second form does the same for the named player The third form does the same for the named player but begins searching the database with the numbered object player may be replaced by me to restrict the audit of yourself This can be useful if you know the player does not own any objects below a certain number typically the player s number itself Interestingly due to a quirk of the code Caudit me from me will show you objects owned by you starting with your object number an unexpected shorthand classes Command classes class name Command The wizards have identified several useful classes of objects in the database The classes command is used to see which classes exist and what their member objects are The first form simply lists all of the defined class
41. gned to make such restrictions easy to implement usually without any programming Every object supports a notion of being locked with respect to certain other objects For example the exit above might be locked for any object that was carrying the coffin object but unlocked for all other objects In general if some object A is locked for another object B then B is usually prevented from using A Of course the meaning of use in this context depends upon the kind of object The various standard classes of objects use locking as follows e Rooms and containers refuse to allow any object inside them if they re locked for it e Exits refuse to transport any object that they re locked for e Things including notes and letters cannot be moved to locations that they re locked for There are two sides to locking e How is it specified whether one object is locked for another one e What is the effect of an object being locked Note that these two questions are entirely independent one could invent a brand new way to specify locking but the effect of an exit being locked would be unchanged Programmers should note that the interface between these two sides is the verb x is_unlocked_for y which is called by x to determine if it is locked for the object y The way in which is_ unlocked_for is implemented is entirely independent of the ways in which x uses its results Note that you can play on either side of this interf
42. h you d rather not hear from certain other players It might be that they re being annoying or just that whatever they re doing makes a lot of noise Gagging a player will stop you from hearing the results of any task initiated by that player You can also gag a specific object if you want to hear what the owner of that object says but not the output from their noisy robot The commands to use gagging are described below gag player or object player or object Command Add the given players to your gag list You will no longer see any messages that result from actions initiated by these players In particular you will not hear them if they try to speak emote or whisper to you For example if blip types in the following command gag geezer and no longer hears anything that geezer says If you specify an object then any text originating from that object will not be printed For example suppose Noisy Robot prints Hi there every 15 seconds In order to avoid seeing that blip types the following command gag Noisy and no longer hears that robot Note that blip must be in the same room as Noisy Robot for this to work or know its object number ungag player or object Command Cungag everyone Command Remove the given player or object or in the second form everyone from your gag list You will once again see any messages that result from actions initiated by the ungagged player s or objects In particular you wi
43. his is a mail room command It is used to remove yourself from the given mailing list The second form removes arbitrary people from a mailing list You can only do this if you own whatever is being removed or you own the list Chapter 12 The MOO Editor You can use the who command to determine if you are on a given mailing list 43 Chapter 13 Dealing with Verbs and Properties 44 13 Dealing with Verbs and Properties Verbs and properties are the elements of objects that make them useful A verb allows you to define things to do with an object and properties are used to store state information about the object A verb can be thought of as a MOO code program executed when the verb on the object is invoked This can happen if the LambdaMOO parser matches the user input with the verb on an object or when another MOO code program explicitly calls the verb Several commands are available to allow manipulation of properties and verbs show object Command show object prop name Command show object verb name Command Displays quite detailed information about an object property or verb including its name owner permission bits etc The information displayed for an object can be quite long but usually fits on most screens chmod object object permissions Command chmod object prop name property permissions Command chmod object verb name verb permissions Command Changes the permissions of an object property or verb to those
44. indicated messages from your MOO email collection There is no confir mation for this action so be careful deleted messages are really gone irrecoverable You get the message numbers for use here by typing the mail command which prints a table of contents for your entire MOO email collection You may specify cur in place of a number to specify your current message Crmm with no arguments deletes your current message renumber Command Renumbers the messages in your collection to go from 1 to however many you have at the moment 6 1 Mail Options There are 3 personal properties that you can use to customize how your mail is composed and forwarded 6 1 1 mail_forward This property is a list of people object reference numbers who will receive any mail that gets sent to you This list may include non person recipients i e descendants of mail_ recipient If this list is nonempty you will not receive any mail yourself unless you are on it E g if blip is 42 and ur blip is 43 43 mail_forward usual case ur blip gets his own mail 43 mail_forward 42 blip gets ur blip s mail instead 43 mail_forward 43 42 ur blip gets mail and blip gets a copy 43 mail_forward 1 ur blip s mail disappears without a trace 6 1 2 mail_notify This property is a list of people object reference numbers to be notified whenever mail is sent to you This list may include anything that has a tel1 verb
45. inted out whenever someone uses the look command on object To describe yourself use me as the object For example if blip types the following describe me as A very fine fellow if a bit on the short side People who type look blip now see this A very fine fellow if a bit on the short side The description of an object is kept in its description property For multi line descriptions description can be a list of strings Crename object to name alias alias Command rename object to name and alias alias alias Command rename object verb to new verb name Command The first two forms are used to change the name and aliases of an object The name is what will be used in most printed descriptions of the object The aliases are the names by which players can refer to the object in commands NOTE that the name of a player may not include spaces and that no two players may have the same name at the same time For example if blip names his dog using the following command rename 4237 to Rover the Wonder Dog Rover dog Now we ll see Rover the Wonder Dog if we re in the same room as him and we can refer to him as either Rover or just dog in our commands like pet dog The third form of the Crename command is for use by programmers to change the name of a verb they own If the new verb name contains spaces the verb will have multiple names one for each space separated word recycle
46. inventory command is written down as i nventory which means that this command can be invoked by the player typing any of the following S in inv inven etc Chapter 2 Commands That Affect Your Player 3 2 Commands That Affect Your Player The player class defines a number of verbs that allow the player to change and view certain of his her characteristics The following commands are available help information Command help topic Command help index Command help object verbname Command help something_utils Command This command is used to print out entries from the online documentation system The first form prints out a summary table of contents for the entire help system The second form prints out the documentation available on the given topic Many help system entries contain references to other entries accessible in this way The topic name may be abbreviated in either of two ways you may give only a prefix of the complete topic name e g bui instead of building and you may omit an initial character e g who instead of who If the abbreviation you give is ambiguous you will be presented with a list of the matching complete topic names The help index commands prints out a complete list of all help topic names ar ranged alphabetically It is sometimes easier to find the topics you re interested in this way rather than tracing through the chain of cross references Finally we h
47. ion number for the currently executing MOO server lastlog Command lastlog player Command The first form prints out a list of all players roughly sorted by how long it s been since that player last connected to the MOO For each player the precise time of their last connection is printed The second form only shows the last connection time for the named player memory Command Prints out all information available on the current memory usage behavior of the MOO server Probably only a wizard if anyone cares about this Verb Index Verb Index rra ras 38 PEO iii nta ii 45 E TEREPE E eed ice se Ee e dus 39 PANVEDING ee tate es dod alah Poa E 10 Tdi il merod Hb dee Sse PISS Aer Beie Saks 38 EE 46 OQadd Entrance micas A be 20 Vadd EE 24 OanS A O Ze EE 45 E ra weed de 30 Daria ii 22 OU Mco iii od a ds lil OCHECK os tinned nanan ees inns EE darks 13 Ls WEE 44 Ochparent 252 08 Sen sp de ue baaa 44 QClaSSESs cobs bend eeh e EE ek d Se 22 en Kal O 22 le EE 20 QdesctriDe rito Ae Ce diia 21 EE 23 We EE 30 drop_succeeded aa R ce eee eee eee Sch WT EE 46 e aah sane hee cache EE 23 A jc KR ri a tekir Erd TT 23 l e sieves Me eee ede ied dy dee 31 A TRR seg de area e 25 DOTES arar iso stokes 25 Oforked EE 48 EE 10 Os ender its Rea digs 3 Olastlog cic ced tested debacle cous care QU CAV ui llocs ea VE kA COClOSE ienee 0 TL RAR RRR audid ARR RER dE E e E WEE Godrop succeeded 8 ieee ba nreti COST
48. ist of such non player recipients is available from within the mailroom with the showlists command When the send command is typed the usual line editor is invoked The subject command is used to set a Subject line Use say to insert lines in the body of your message Giving this command without arguments resumes editing the previous unsent draft message if one exists reply message number sender all incl noincl Command answer message number sender all incl noincl Command Prepares for you to compose a MOO email message to the players who either received or composed the indicated message from your collection The usual editor is invoked Chapter 6 The MOO Mail System 18 The subject line for the new message will be initialized from that of the indicated message If you leave off the message number the reply will be to your current message if that exists If there is a Reply to field in the message you are answering its contents will be used to initialize the To line of your reply Otherwise a To line is determined depending on whether you specified sender or all in the command line or your mail_options incl includes the text of the original message in your reply noincl does not Defaults are sender and noincl but you can change this by setting your mail options property Crmmail message number message number Command Deletes the
49. l if you re entering a long list of lines perhaps via some macro on your client and you don t want to see an equally long list of Line n added messages What you do want however is some indication that this all got through which is why the command is an abbreviation for insert There will be more options some day Chapter 12 The MOO Editor 37 12 1 Editor Ranges Most editor commands act upon a particular range of lines Essentially one needs to specify a first line and a last line Line numbers may be given in any of the following forms n De the nth line of text n n th line after below the current insertion point n_ n th line before above the current insertion point n n th line before the end In the latter three n defaults to 1 so that by itself refers to the line below the current De the line that gets printed before it and likewise for _ while refers to the last line Note that the usage depends on whether you are specifying a line or an insertion point space between lines 5 is the space above before line 5 while 5 is the fifth line after below the current insertion point Ranges of lines may be specified in any of the following ways line just that line from line to line what it says the following two forms are equivalent line line line line With the from 1 to 1 form either the from or the to can be left off and it will default to
50. layer ht gt this object i e the object issuing the message usually ha gt the direct object from the command line hi gt the indirect object from the command line Al gt the location of the player Je gt subject pronoun either he she or it ho gt object pronoun either him her or it hp gt posessive pronoun adj either his her or its q gt posessive pronoun noun either his hers or its ux gt reflexive pronoun either himself herself or itself foo gt player foo Chapter 5 Using Pronoun Substitutions 15 ltfoo l dfoo lifoo l1lfoo gt this foo dobj foo iobj foo and player location foo L gt player s object number Lt 4 d 9 ta gt object numbers for this direct obj indirect obj and location In addition there is a set of capitalized substitutions for use at the beginning of sentences These are respectively e AN T MD 1 L for object names e S RO P WQ R for pronouns and e Foo dFoo Dfoo DFoo for general properties Note that there is a special exception for player name s the name propertywhich are assumed to already be capitalized as desired There may be situations where the standard algorithm i e upcasing the first letter yields something incorrect in which case a capitalization for a particular string prop
51. ll once again be able to hear them if they speak emote or whisper to you For example suppose that blip types the following 1 What a relief Chapter 4 Interacting With Other Players 11 ungag geezer and is once again able to hear geezer s witty remarks listgag Command Shows you a list of the players and objects currently on your gag list You don t see any messages that result from actions initiated by the players or objects on this list In particular you will not hear them if they try to speak emote or whisper to you 4 3 Communicating With The Game Administrators Several commands are provided for communicating with the people that run the game The news command is used by the wizards to let players know of anything that is globally interesting Players can use grip to complain to the wizards and commands like typo to report defects to builders and programmers The following section describes these commands in detail news Command Read the latest edition of the LambdaMOO server news which carries articles con cerning recent changes to the MOO server or to the main public classes or whatever else is important for players to know gripe anything Command Puts you into the MOO mail system to register a complaint or conceivably a com pliment with the wizards The rest of the command line the anything part is used as the subject line for the message More information on using the
52. lly changes how the server will interpret later lines that you type to it After typing the program line you are in programming mode All lines that you type in this mode are simply saved away in the server until you type a line containing only a single period At that point those lines are interpreted as a MOO program and are checked for syntax errors If none are found a message to that effect is printed and the code you typed is installed as the program for the verb in question In any case after typing the line you are returned to the normal input handling mode Chapter 13 Dealing with Verbs and Properties 46 list object verb Command list object verb with parentheses Command list object verb without numbers Command list object verb with parentheses without numbers Command Prints out the code for the MOO program associated with the named verb on the named object Normally the code is shown with each line numbered and with only those parentheses that are necessary to show the meaning of the program By specify ing options as shown in the last three forms above you can have the numbers omitted and or all parentheses included For example list room move to see the code for the move command or even list prog list to see the code implementing list itself edit object verb name Command Enters the MOO Verb Editor for the named verb on the named object eval MOO code Command 3 MOO code
53. n sweep tries to list the avenues by which information may be leaving the room In a manner analogous to check it assumes that you don t want to hear about your own verbs or those belonging to wizards who presumably wouldn t stoop to bugging Chapter 4 Interacting With Other Players 13 paranoid Command paranoid off Command paranoid immediate Command paranoid number Command In immediate mode the monitor prepends everything you hear with the name of the character it considers responsible for the message Otherwise it keeps records of the last number defaults to 20 lines you have heard These records can be accessed by the check command check options Command Used when you are suspicious about the origin of some of the messages your character has just heard Various options can be specified e the number of lines to be displayed e a player s name someone to be trusted during the assignment of responsibility for the message e a player s named prefixed by someone not to be trusted Output from check is in columns that contain in order the monitor s best guess as to e what object the message came from e what verb on that object that was responsible e whose permissions that verb was running with and the beginning of the actual message check operates by examining the list of verbs that were involved in delivering the message and assigning responsibility to the first owner it sees who is not
54. o prevent a maliciously or incorrectly written MOO program from running forever and monopolizing the server limits are placed on the running time of every task One limit is that no task is allowed to run longer than one minute this limit is in practice never reached The reason is that there is a second limit on the number of operations a task may execute Every task has an associated clock that counts down ticks as the task executes The server counts one tick for every expression evaluation other than variables and literals and one for every time through the body of a loop If a task s clock winds all the way down to zero the task is immediately and unceremoniously aborted Command and server tasks are given brand new clocks with an initial store of 20 000 ticks this is enough for almost all normal uses A forked task inherits the clock of the task that forked it with however many ticks remain on it To allow objects like cuckoo clocks and other recurring tasks that do a little bit of work every once in a while forever clocks also regain ticks at the rate of 25 ticks per second up to the maximum of 20 000 ticks The seconds are counted from the end of the time that one task was counting down that clock to the time when the next user of that clock actually begins execution Because forked tasks may exist for long periods of time before they begin execution there are commands to list the ones that you own and to kill them before they
55. o the player when they fail in using the exit The default message is You can t go that way onogo message Command This command sets the message printed to others when a player fails in using the exit The default message is 10 2 Setting Messages for Things Several kinds of messages can be set on things that is objects that have thing as an ancestor They are printed to various audiences under various circumstances when an attempt is made to take or drop a thing The ones whose names begin with o are always shown prefixed with the name of the player making the attempt and a single space character The standard pronoun substitutions with respect to the player are made on each message before it is printed The following commands can be used to set the corresponding messages on things take_failed Command This command is used to set the message printed to a player who fails to take the object The default message is You can t pick that up otake_failed Command This command is used to set the message printed to others in the same room if a player fails to take the object The default message is take_succeeded Command This command is used to set the message printed to a player who succeeds in taking the object The default message is You take t otake_succeeded Command This command is used to set the message printed to others in the same room if a player succeeds in taking the
56. object The default message is picks up t drop_failed Command This command is used to set the message printed to a player who fails to drop the object The default message is You can t seem to drop t bere Chapter 10 Messages on Objects 31 odrop_failed Command This command is used to set the message printed to others in the same room if a player fails to drop the object The default message is tries to drop t but fails drop_succeeded Command This command is used to set the message printed to a player who succeeds in dropping the object The default message is You drop t odrop_succeeded Command This command is used to set the message printed to others in the room if a player succeeds in dropping the object The default message is drops t 10 3 Setting Messages for Containers Several kinds of messages can be set on a container object they are printed to various audiences at certain times whenever an attempt is made to use the container The ones whose names begin with o are always shown prefixed with the name of the player making the attempt and a single space character The standard pronoun substitutions with respect to the player are made on each message before it is printed The following commands can be used to set the corresponding messages used with con tainers Cempty Command This command is used to set the message printed in place of the contents list when the containe
57. ou can see what objects you re carrying with the inventory command Some specialized objects will have other commands The programmer of the object will usually provide some way for you to find out what the commands are One way that works for most objects is the examine command inventory Command Prints a list showing every object you re carrying take object Command get object Command take object from container Command get object from container Command remove object from container Command The first two forms pick up the named object and place it in your inventory Some times the owner of the object won t allow it to be picked up for some reason The remaining forms move the named object from inside the named container into your inventory As before sometimes the owner of an object will not allow you to do this drop object Command throw object Command Remove an object you are carrying from your inventory and put it in your current room Occasionally you may find that the owner of the room won t allow you to do this put object into container Command insert object in container Command Moves the named object into the named container Sometimes the owners of the object and or the container will not allow you to do this give object to player Command hand object to player Command Move an object from your contents to that of another player This doesn t change the ownership of the object Some players may ref
58. r is empty The default message is It is empty Copen Command This command is used to set the message printed to the player who successfully opens the container The default message is You open d Coopen Command This command is used to set the message printed to others in the same room if the player successfully opens the container The default message is opens 7d Copen fail Command This command is used to set the message printed to the player who cannot open the container The default message is You can t open that Coopen fail Command This command is used to set the message printed to others in the room when a player fails to open a container The default message is close Command This command is used to set the message printed to the player who closes a container The default message is You close d Chapter 10 Messages on Objects 32 oclose Command This command is used to set the message printed to others in the room when a player closes a container The default message is closes d put Command This command is used to set the message printed to a player when an object is successfully placed in a container The default message is You put d in i Coput Command This command is used to set the message printed to others in the room when a player successfully places an object in a container The default message is puts d in Zi put_fail Command This command is used to set
59. sed on the following objects e containers e exits e things messages object Command List all of the messages that can be set on the named object and their current values 10 1 Setting Messages for Exits Several kinds of messages can be set on an exit object they are printed to various audiences at certain times whenever an attempt is made to go through the exit The ones whose names begin with o are always shown prefixed with the name of the player making the attempt and a single space character The standard pronoun substitutions with respect to the player are made on each message before it is printed The following commands can be used to set the corresponding messages on an exit leave message Command This command sets the message printed to the player just before they successfully use the exit The default message is oleave message Command This command sets the message printed to others in the source room when a player successfully uses the exit The default message is has left Chapter 10 Messages on Objects 30 arrive message Command This command sets the message printed to the player just after they successfully use the exit The default message is oarrive message Command This command sets the message printed to others in the destination room when a player successfully uses the exit The default message is has arrived nogo message Command This command sets the message printed t
60. tes from one player to another You create the letter as a child of the generic letter letter encrypt it so that only you and the other player can read it and then either give it to the player in question or leave it where they will find it Once they ve read it they can use the burn command to recycle the letter The following command is available for letters in addition to those used for notes burn letter Command Destroy the named letter irretrievably Only players who can read the letter can do this Chapter 9 Using Containers 28 9 Using Containers Containers are objects that allow you to store other objects inside them Containers may be open or closed using the verbs open and close on the container Containers have a separate lock to determine if a player may open them You can make a container by creating a child of the standard container container Containers have a large number of messages which get printed when players act upon them Containers have opacity This is manipulated using the following command opacity container is integer Command The opacity can take on one of three values 0 The container is transparent and you can always see into it 1 The container is opaque and you cannot see into it when closed 2 The container is a black hole and you can never see into it whether closed or open The default opacity is 1 the container is opaque Chapter 10 Messages on Obj
61. the message printed when a player fails to put an object in a container The default message is You can t put Ad in that Coput fail Command This command is used to set the message printed to others in the room when a player fails to place an object in a container The default message is remove Command This command is used to set the message printed when a player succeeds in removing an object from a container The default message is You remove d from i Coremove Command This command is used to set the message printed to others in the room when a player succeeds in removing an object from a container The default message is removes Ad from hi remove_fail Command This command is used to set the message printed when a player fails to remove an object from a container The default message is You can t remove that oremove_fail Command This command is used to set the message printed to others in the room when a player fails to remove an object from a container The default message is Chapter 11 Using Locks With Objects 33 11 Using Locks With Objects It is frequently useful to restrict the use of some object For example one might want to keep people from using a particular exit unless they re carrying a bell a book and a candle Alternatively one might allow anyone to use the exit unless they re carrying that huge golden coffin in the corner LambdaMOO supports a general locking mechanism desi
62. to allow the user to do useful work This document gives a rundown on the commands of the LambdaCore database pro viding examples of how they are used and some of the ideas behind them It does not cover how the commands work nor how they are implemented as verbs in the MOO pro gramming language A companion manual The LambdaCore Programmer s Manual covers those aspects of the LambdaCore database The user may find it useful to read the other companion manual to this one The Lamb daMOO Programmer s Manual An understanding of MOO concepts and the MOO lan guage can be useful when playing the game Chapter 1 The LambdaCore Player Commands 2 1 The LambdaCore Player Commands A player interacts with the game using a large number of commands Most of these commands are implemented within the database as verbs of object classes The following sections list the commands in the LambdaCore database grouped roughly by function Some commands such as those used for manipulating notes are defined by the particular class of object they work on in this case the Note class Other commands are defined for one or more classes This section intends to give a paper reference for the information given in the help system within the LambdaCore database with some additional explanation of the concepts involved Note that for commands that can be abbreviated the form in which the command is specified in the database is shown For example the
63. tool The first form of the command creates a new room with the given name The new room is not connected to anywhere else it is floating Chapter 7 Building and Creating Objects 24 in limbo The dig command tells you its object number though so you can use the move command to get there easily The second form of the command not only creates the room but one or two exits linking your current location to and possibly from the new room An exit spec has one of the following two forms names names names where the first form is used when you only want to create one exit from your current room to the new room and the second form when you also want an exit back from the new room to your current room In any case the names piece is just a list of names for the exit separated by commas these are the names of the commands players can type to use the exit It is usually a good idea to include explicitly the standard abbreviations for direction names e g n for north se for southeast etc DO NOT put spaces in the names of exits they are useless in MOO The third form of the command is just like the second form except that no new room is created you instead specify by object number the other room to from which the new exits will connect NOTE You must own the room at one end or the other of the exits you create If you own both everything is hunky dorey If you own only one end then after cr
64. trusted By default it trusts you and all the wizards It uses the records maintained by paranoid so you must have used that command before you received the message Chapter 5 Using Pronoun Substitutions 14 5 Using Pronoun Substitutions Some kinds of messages are not printed directly to players they are allowed to contain special characters marking places to include the appropriate pronoun for some player For example a builder might have a doorway that s very short so that people have to crawl to get through it When they do so the builder wants a little message like this to be printed Zaphod crawls through the little doorway bruising his knee The problem is the use of his in the message what if the player in question is female The correct setting of the oleave message on that doorway is as follows crawls through the little doorway bruising p knee The p in the message will be replaced by either his her or its depending upon the gender of the player As it happens you can also refer to elements of the command line e g direct and indirect objects the object issuing the message and the location where this is all happening In addition one can refer to arbitrary string properties on these objects or get the object numbers themselves The complete set of substitutions is as follows toh gt just in case you actually want to talk about percentages n gt the p
65. use to accept gifts and some objects may refuse to be given look Command look object Command look object in container Command This command is used to show a description of something The first form with no arguments shows you the name and description of the room you re in along with a list of the other objects that are there Chapter 3 Exploring and Interacting With the Virtual World Z The second form lets you look at a specific object Most objects have descriptions that may be read this way You can look at your own description using look me You can set the description for an object or room including yourself with the describe command The third form shows you the description of an object that is inside some other object including objects being carried by another player examine object Command exam object Command Prints several useful pieces of information about the named object including the following its full name aliases and object number its owner s name and object number its description its key expression if it is locked and if you own it its contents and their object numbers the obvious verbs defined on it The obvious verbs are those that are readable and that can be invoked as commands To keep a verb off this list either make it unreadable using chmod or if it shouldn t be used as a command give it args of this none this Chapter 4 Interacting With Other Players 8 4
66. wn n lines If text is provided inserts a new line there just like say Equivalent to insert n As one might expect n defaults to 1 p rev n text Command Moves the insertion point up n lines If text is provided a new line is inserted as with say Equivalent to insert n As one might expect n defaults to 1 del ete range Command Deletes the specified range of lines Note that range defaults to the line before the current insertion point f ind str c ins Command str c ins Command Searches for the first line after ins containing str ins defaults to the current insertion point With the first form any character not just may be used as a delimiter For the second form you must use The c flag if given indicates that case is to be ignored while searching s ubst str1 str2 c range Command Substitutes str2 for str1 in all of the lines of range Any character not just may be used to delimit the strings If strl is blank str2 is inserted at the beginning of the line For inserting a string at the end of a line use emote or Chapter 12 The MOO Editor 40 Normally only one substitution is done per line in the specified range but if the g flag is given all instances of str1 are replaced The c flag indicates that case is not significant when searching for substitution instances range defaults to the line before the ins

LambdaCore Database User`s Manual Version 1.3

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