Play Live Overview Routines Objects Global Vars Properties
"Generic PARSER file for
The ZORK Trilogy
started on 7/28/83 by MARC"
;"WHICH and TRAP retrofixes installed"
"Parser global variable convention: All parser globals will
begin with 'P-'. Local variables are not restricted in any
way.
"
<SETG SIBREAKS ".,\"">
<GLOBAL GWIM-DISABLE <>>
<GLOBAL PRSA <>>
<GLOBAL PRSI <>>
<GLOBAL PRSO <>>
<GLOBAL P-TABLE 0>
<GLOBAL P-ONEOBJ 0>

The grammar line found when the most recent command was parsed. (Except for simple direction commands, which are a special case.) See the Grammar tab.

<GLOBAL P-SYNTAX 0>
<GLOBAL P-CCSRC 0>
<GLOBAL P-LEN 0>
<GLOBAL P-DIR 0>

The location of the WINNER.

<GLOBAL HERE 0>

WINNER is the actor in the current command. (Compare PLAYER.)

WINNER is usually ADVENTURER, but for a command like ROBOT, GO EAST it shifts to the named NPC. (But Zork 1 has no commandable NPCs, so this doesn’t come up.)

“Winner” is just as sarcastic as “cretin”, but from the other side.

<GLOBAL WINNER 0>
<GLOBAL P-LEXV <ITABLE BYTE 120>>
;"INBUF - Input buffer for READ"
<GLOBAL P-INBUF <ITABLE BYTE 100>>
;"Parse-cont variable"
<GLOBAL P-CONT <>>
<GLOBAL P-IT-OBJECT <>>
<GLOBAL P-IT-LOC <>>
;"Orphan flag"
<GLOBAL P-OFLAG <>>
<GLOBAL P-MERGED <>>
<GLOBAL P-ACLAUSE <>>
<GLOBAL P-ANAM <>>
<GLOBAL P-AADJ <>>
;"Parser variables and temporaries"
<CONSTANT P-PHRLEN 3>
<CONSTANT P-ORPHLEN 7>
<CONSTANT P-RTLEN 3>
;"Byte offset to # of entries in LEXV"
<CONSTANT P-LEXWORDS 1>
;"Word offset to start of LEXV entries"
<CONSTANT P-LEXSTART 1>
;"Number of words per LEXV entry"
<CONSTANT P-LEXELEN 2>
<CONSTANT P-WORDLEN 4>
;"Offset to parts of speech byte"
<CONSTANT P-PSOFF 4>
;"Offset to first part of speech"
<CONSTANT P-P1OFF 5>
;"First part of speech bit mask in PSOFF byte"
<CONSTANT P-P1BITS 3>
<CONSTANT P-ITBLLEN 9>
<GLOBAL P-ITBL <TABLE 0 0 0 0 0 0 0 0 0 0>>
<GLOBAL P-OTBL <TABLE 0 0 0 0 0 0 0 0 0 0>>
<GLOBAL P-VTBL <TABLE 0 0 0 0>>
<GLOBAL P-NCN 0>
<CONSTANT P-VERB 0>
<CONSTANT P-VERBN 1>
<CONSTANT P-PREP1 2>
<CONSTANT P-PREP1N 3>
<CONSTANT P-PREP2 4>
<CONSTANT P-PREP2N 5>
<CONSTANT P-NC1 6>
<CONSTANT P-NC1L 7>
<CONSTANT P-NC2 8>
<CONSTANT P-NC2L 9>
<GLOBAL QUOTE-FLAG <>>
" Grovel down the input finding the verb, prepositions, and noun clauses.
If the input is <direction> or <walk> <direction>, fall out immediately
setting PRSA to ,V?WALK and PRSO to <direction>. Otherwise, perform
all required orphaning, syntax checking, and noun clause lookup."
<ROUTINE PARSER ("AUX" (PTR ,P-LEXSTART) WRD (VAL 0) (VERB <>)
LEN (DIR <>) (NW 0) (LW 0) NUM SCNT (CNT -1))
<REPEAT ()
<COND (<G? <SET CNT <+ .CNT 1>> ,P-ITBLLEN> <RETURN>)
(T <PUT ,P-ITBL .CNT 0>)>>
<SETG P-ADVERB <>>
<SETG P-MERGED <>>
<PUT ,P-PRSO ,P-MATCHLEN 0>
<PUT ,P-PRSI ,P-MATCHLEN 0>
<PUT ,P-BUTS ,P-MATCHLEN 0>
<COND (<AND <NOT ,QUOTE-FLAG> <N==? ,WINNER ,PLAYER>>
<SETG WINNER ,PLAYER>
<COND (<NOT <FSET? <LOC ,WINNER> ,VEHBIT>>
<SETG HERE <LOC ,WINNER>>)>
<SETG LIT <LIT? ,HERE>>)>
<COND (,P-CONT
<SET PTR ,P-CONT>
<COND (<AND <NOT ,SUPER-BRIEF>
<==? ,PLAYER ,WINNER>
<NOT <VERB? SAY>>>
<CRLF>)>
<SETG P-CONT <>>)
(T
<SETG WINNER ,PLAYER>
<SETG QUOTE-FLAG <>>
<COND (<NOT <FSET? <LOC ,WINNER> ,VEHBIT>>
<SETG HERE <LOC ,WINNER>>)>
<SETG LIT <LIT? ,HERE>>
<COND (<NOT ,SUPER-BRIEF> <CRLF>)>
<TELL ">">
<READ ,P-INBUF ,P-LEXV>)>
<SETG P-LEN <GETB ,P-LEXV ,P-LEXWORDS>>
<COND (<0? ,P-LEN> <TELL "I beg your pardon?" CR> <RFALSE>)>
<SET LEN ,P-LEN>
<SETG P-DIR <>>
<SETG P-NCN 0>
<SETG P-GETFLAGS 0>
<REPEAT ()
<COND (<L? <SETG P-LEN <- ,P-LEN 1>> 0>
<SETG QUOTE-FLAG <>>
<RETURN>)
(<OR <SET WRD <GET ,P-LEXV .PTR>>
<SET WRD <NUMBER? .PTR>>>
<COND (<AND <==? .WRD ,W?TO>
<EQUAL? .VERB ,ACT?TELL ;,ACT?ASK>>
<SET WRD ,W?QUOTE>)
(<AND <==? .WRD ,W?THEN>
<NOT .VERB>
<NOT ,QUOTE-FLAG> ;"Last NOT added 7/3">
<PUT ,P-ITBL ,P-VERB ,ACT?TELL>
<PUT ,P-ITBL ,P-VERBN 0>
<SET WRD ,W?QUOTE>)>
<COND (<OR <EQUAL? .WRD ,W?THEN ,W?PERIOD>
<EQUAL? .WRD ,W?QUOTE>>
<COND (<EQUAL? .WRD ,W?QUOTE>
<COND (,QUOTE-FLAG
<SETG QUOTE-FLAG <>>)
(T <SETG QUOTE-FLAG T>)>)>
<OR <0? ,P-LEN>
<SETG P-CONT <+ .PTR ,P-LEXELEN>>>
<RETURN>)
(<AND <SET VAL
<WT? .WRD
,PS?DIRECTION
,P1?DIRECTION>>
<EQUAL? .VERB <> ,ACT?WALK>
<OR <==? .LEN 1>
<AND <==? .LEN 2>
<EQUAL? .VERB ,ACT?WALK>>
<AND <EQUAL? <SET NW
<GET ,P-LEXV
<+ .PTR ,P-LEXELEN>>>
,W?THEN
,W?PERIOD
,W?QUOTE>
<NOT <L? .LEN 2>>>
<AND ,QUOTE-FLAG
<==? .LEN 2>
<EQUAL? .NW ,W?QUOTE>>
<AND <G? .LEN 2>
<EQUAL? .NW ,W?COMMA ,W?AND>>>>
<SET DIR .VAL>
<COND (<EQUAL? .NW ,W?COMMA ,W?AND>
<PUT ,P-LEXV
<+ .PTR ,P-LEXELEN>
,W?THEN>)>
<COND (<NOT <G? .LEN 2>>
<SETG QUOTE-FLAG <>>
<RETURN>)>)
(<AND <SET VAL <WT? .WRD ,PS?VERB ,P1?VERB>>
<NOT .VERB>>
<SET VERB .VAL>
<PUT ,P-ITBL ,P-VERB .VAL>
<PUT ,P-VTBL 0 .WRD>
<PUTB ,P-VTBL 2 <GETB ,P-LEXV
<SET NUM
<+ <* .PTR 2> 2>>>>
<PUTB ,P-VTBL 3 <GETB ,P-LEXV <+ .NUM 1>>>)
(<OR <SET VAL <WT? .WRD ,PS?PREPOSITION 0>>
<AND <OR <EQUAL? .WRD ,W?ALL ,W?ONE ;,W?A>
<WT? .WRD ,PS?ADJECTIVE>
<WT? .WRD ,PS?OBJECT>>
<SET VAL 0>>>
<COND (<AND <G? ,P-LEN 0>
<==? <GET ,P-LEXV
<+ .PTR ,P-LEXELEN>>
,W?OF>
<0? .VAL>
<NOT
<EQUAL? .WRD ,W?ALL ,W?ONE ,W?A>>>)
(<AND <NOT <0? .VAL>>
<OR <0? ,P-LEN>
<EQUAL? <GET ,P-LEXV <+ .PTR 2>>
,W?THEN ,W?PERIOD>>>
<COND (<L? ,P-NCN 2>
<PUT ,P-ITBL ,P-PREP1 .VAL>
<PUT ,P-ITBL ,P-PREP1N .WRD>)>)
(<==? ,P-NCN 2>
<TELL
"There were too many nouns in that sentence." CR>
<RFALSE>)
(T
<SETG P-NCN <+ ,P-NCN 1>>
<OR <SET PTR <CLAUSE .PTR .VAL .WRD>>
<RFALSE>>
<COND (<L? .PTR 0>
<SETG QUOTE-FLAG <>>
<RETURN>)>)>)
(<WT? .WRD ,PS?BUZZ-WORD>)
(<AND <EQUAL? .VERB ,ACT?TELL>
<WT? .WRD ,PS?VERB ,P1?VERB>>
<TELL
"Please consult your manual for the correct way to talk to other people
or creatures." CR>
<RFALSE>)
(T
<CANT-USE .PTR>
<RFALSE>)>)
(T
<UNKNOWN-WORD .PTR>
<RFALSE>)>
<SET LW .WRD>
<SET PTR <+ .PTR ,P-LEXELEN>>>
<COND (.DIR
<SETG PRSA ,V?WALK>
<SETG PRSO .DIR>
<SETG P-WALK-DIR .DIR>
<RETURN T>)>
<SETG P-WALK-DIR <>>
<COND (,P-OFLAG <ORPHAN-MERGE>)>
T)>>
<GLOBAL P-WALK-DIR <>>
;"Check whether word pointed at by PTR is the correct part of speech.
The second argument is the part of speech (,PS?<part of speech>). The
3rd argument (,P1?<part of speech>), if given, causes the value
for that part of speech to be returned."
<ROUTINE WT? (PTR BIT "OPTIONAL" (B1 5) "AUX" (OFFS ,P-P1OFF) TYP)
<COND (<BTST <SET TYP <GETB .PTR ,P-PSOFF>> .BIT>
<COND (<G? .B1 4> <RTRUE>)
(T
<SET TYP <BAND .TYP ,P-P1BITS>>
<COND (<NOT <==? .TYP .B1>> <SET OFFS <+ .OFFS 1>>)>
<GETB .PTR .OFFS>)>)>>
;" Scan through a noun clause, leave a pointer to its starting location"
<ROUTINE CLAUSE (PTR VAL WRD "AUX" OFF NUM (ANDFLG <>) (FIRST?? T) NW (LW 0))
<SET OFF <* <- ,P-NCN 1> 2>>
<COND (<NOT <==? .VAL 0>>
<PUT ,P-ITBL <SET NUM <+ ,P-PREP1 .OFF>> .VAL>
<PUT ,P-ITBL <+ .NUM 1> .WRD>
<SET PTR <+ .PTR ,P-LEXELEN>>)
(T <SETG P-LEN <+ ,P-LEN 1>>)>
<COND (<0? ,P-LEN> <SETG P-NCN <- ,P-NCN 1>> <RETURN -1>)>
<PUT ,P-ITBL <SET NUM <+ ,P-NC1 .OFF>> <REST ,P-LEXV <* .PTR 2>>>
<COND (<EQUAL? <GET ,P-LEXV .PTR> ,W?THE ,W?A ,W?AN>
<PUT ,P-ITBL .NUM <REST <GET ,P-ITBL .NUM> 4>>)>
<REPEAT ()
<COND (<L? <SETG P-LEN <- ,P-LEN 1>> 0>
<PUT ,P-ITBL <+ .NUM 1> <REST ,P-LEXV <* .PTR 2>>>
<RETURN -1>)>
<COND (<OR <SET WRD <GET ,P-LEXV .PTR>>
<SET WRD <NUMBER? .PTR>>>
<COND (<0? ,P-LEN> <SET NW 0>)
(T <SET NW <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>>)>
<COND (<EQUAL? .WRD ,W?AND ,W?COMMA> <SET ANDFLG T>)
(<EQUAL? .WRD ,W?ALL ,W?ONE>
<COND (<==? .NW ,W?OF>
<SETG P-LEN <- ,P-LEN 1>>
<SET PTR <+ .PTR ,P-LEXELEN>>)>)
(<OR <EQUAL? .WRD ,W?THEN ,W?PERIOD>
<AND <WT? .WRD ,PS?PREPOSITION>
<GET ,P-ITBL ,P-VERB>
;"ADDED 4/27 FOR TURTLE,UP"
<NOT .FIRST??>>>
<SETG P-LEN <+ ,P-LEN 1>>
<PUT ,P-ITBL
<+ .NUM 1>
<REST ,P-LEXV <* .PTR 2>>>
<RETURN <- .PTR ,P-LEXELEN>>)
(<WT? .WRD ,PS?OBJECT>
<COND (<AND <G? ,P-LEN 0>
<EQUAL? .NW ,W?OF>
<NOT <EQUAL? .WRD ,W?ALL ,W?ONE>>>
T)
(<AND <WT? .WRD
,PS?ADJECTIVE
,P1?ADJECTIVE>
<NOT <==? .NW 0>>
<WT? .NW ,PS?OBJECT>>)
(<AND <NOT .ANDFLG>
<NOT <EQUAL? .NW ,W?BUT ,W?EXCEPT>>
<NOT <EQUAL? .NW ,W?AND ,W?COMMA>>>
<PUT ,P-ITBL
<+ .NUM 1>
<REST ,P-LEXV <* <+ .PTR 2> 2>>>
<RETURN .PTR>)
(T <SET ANDFLG <>>)>)
(<AND <OR ,P-MERGED
<NOT <EQUAL? <GET ,P-ITBL ,P-VERB> 0>>>
<OR <WT? .WRD ,PS?ADJECTIVE>
<WT? .WRD ,PS?BUZZ-WORD>>>)
(<AND .ANDFLG
<OR <WT? .WRD ,PS?DIRECTION>
<WT? .WRD ,PS?VERB>>>
<SET PTR <- .PTR 4>>
<PUT ,P-LEXV <+ .PTR 2> ,W?THEN>
<SETG P-LEN <+ ,P-LEN 2>>)
(<WT? .WRD ,PS?PREPOSITION> T)
(T
<CANT-USE .PTR>
<RFALSE>)>)
(T <UNKNOWN-WORD .PTR> <RFALSE>)>
<SET LW .WRD>
<SET FIRST?? <>>
<SET PTR <+ .PTR ,P-LEXELEN>>>>
<ROUTINE NUMBER? (PTR "AUX" CNT BPTR CHR (SUM 0) (TIM <>))
<SET CNT <GETB <REST ,P-LEXV <* .PTR 2>> 2>>
<SET BPTR <GETB <REST ,P-LEXV <* .PTR 2>> 3>>
<REPEAT ()
<COND (<L? <SET CNT <- .CNT 1>> 0> <RETURN>)
(T
<SET CHR <GETB ,P-INBUF .BPTR>>
<COND (<==? .CHR 58>
<SET TIM .SUM>
<SET SUM 0>)
(<G? .SUM 10000> <RFALSE>)
(<AND <L? .CHR 58> <G? .CHR 47>>
<SET SUM <+ <* .SUM 10> <- .CHR 48>>>)
(T <RFALSE>)>
<SET BPTR <+ .BPTR 1>>)>>
<PUT ,P-LEXV .PTR ,W?INTNUM>
<COND (<G? .SUM 1000> <RFALSE>)
(.TIM
<COND (<L? .TIM 8> <SET TIM <+ .TIM 12>>)
(<G? .TIM 23> <RFALSE>)>
<SET SUM <+ .SUM <* .TIM 60>>>)>
<SETG P-NUMBER .SUM>
,W?INTNUM>
<GLOBAL P-NUMBER 0>
<GLOBAL P-DIRECTION 0>
;"New ORPHAN-MERGE for TRAP Retrofix 6/21/84"
<ROUTINE ORPHAN-MERGE ("AUX" (CNT -1) TEMP VERB BEG END (ADJ <>) WRD)
<SETG P-OFLAG <>>
<COND (<WT? <GET <GET ,P-ITBL ,P-VERBN> 0> ,PS?ADJECTIVE ,P1?ADJECTIVE>
<SET ADJ T>)>
<COND (<AND <NOT <0? <SET VERB <GET ,P-ITBL ,P-VERB>>>>
<NOT .ADJ>
<NOT <==? .VERB <GET ,P-OTBL ,P-VERB>>>>
<RFALSE>)
(<==? ,P-NCN 2> <RFALSE>)
(<==? <GET ,P-OTBL ,P-NC1> 1>
<COND (<OR <==? <SET TEMP <GET ,P-ITBL ,P-PREP1>>
<GET ,P-OTBL ,P-PREP1>>
<0? .TEMP>>
<COND (.ADJ
<PUT ,P-OTBL ,P-NC1 <REST ,P-LEXV 2>>
<PUT ,P-OTBL ,P-NC1L <REST ,P-LEXV 6>>)
(T
<PUT ,P-OTBL ,P-NC1 <GET ,P-ITBL ,P-NC1>>
<PUT ,P-OTBL ,P-NC1L <GET ,P-ITBL ,P-NC1L>>)>)
(T <RFALSE>)>)
(<==? <GET ,P-OTBL ,P-NC2> 1>
<COND (<OR <==? <SET TEMP <GET ,P-ITBL ,P-PREP1>>
<GET ,P-OTBL ,P-PREP2>>
<0? .TEMP>>
<COND (.ADJ
<PUT ,P-ITBL ,P-NC1 <REST ,P-LEXV 2>>
<PUT ,P-ITBL ,P-NC1L <REST ,P-LEXV 6>>)>
<PUT ,P-OTBL ,P-NC2 <GET ,P-ITBL ,P-NC1>>
<PUT ,P-OTBL ,P-NC2L <GET ,P-ITBL ,P-NC1L>>
<SETG P-NCN 2>)
(T <RFALSE>)>)
(<NOT <ZERO? ,P-ACLAUSE>>
<COND (<AND <NOT <==? ,P-NCN 1>> <NOT .ADJ>>
<SETG P-ACLAUSE <>>
<RFALSE>)
(T
<SET BEG <GET ,P-ITBL ,P-NC1>>
<COND (.ADJ <SET BEG <REST ,P-LEXV 2>> <SET ADJ <>>)>
<SET END <GET ,P-ITBL ,P-NC1L>>
<REPEAT ()
<SET WRD <GET .BEG 0>>
<COND (<==? .BEG .END>
<COND (.ADJ <ACLAUSE-WIN .ADJ> <RETURN>)
(T <SETG P-ACLAUSE <>> <RFALSE>)>)
(<AND <NOT .ADJ>
<OR <BTST <GETB .WRD ,P-PSOFF>
,PS?ADJECTIVE>
<EQUAL? .WRD ,W?ALL ,W?ONE>>>
<SET ADJ .WRD>)
(<OR <BTST <GETB .WRD ,P-PSOFF> ,PS?OBJECT>
<==? .WRD ,W?ONE>>
<COND (<NOT <EQUAL? .WRD ,P-ANAM ,W?ONE>>
<RFALSE>)
(T <ACLAUSE-WIN .ADJ> <RETURN>)>)>
<SET BEG <REST .BEG ,P-WORDLEN>>
<COND (<EQUAL? .END 0>
<SET END .BEG>
<SETG P-NCN 1>
<PUT ,P-ITBL ,P-NC1 <BACK .BEG 4>>
<PUT ,P-ITBL ,P-NC1L .BEG>)>>)>)>
<REPEAT ()
<COND (<G? <SET CNT <+ .CNT 1>> ,P-ITBLLEN>
<SETG P-MERGED T>
<RTRUE>)
(T <PUT ,P-ITBL .CNT <GET ,P-OTBL .CNT>>)>>
T>
;"New ACLAUSE-WIN for TRAP retrofix 6/21/84"
<ROUTINE ACLAUSE-WIN (ADJ)
<PUT ,P-ITBL ,P-VERB <GET ,P-OTBL ,P-VERB>>
<SETG P-CCSRC ,P-OTBL>
<AND <NOT <==? <GET ,P-OTBL ,P-NC2> 0>> <SETG P-NCN 2>>
<SETG P-ACLAUSE <>>
<RTRUE>>
;"Print undefined word in input.
PTR points to the unknown word in P-LEXV"
<ROUTINE WORD-PRINT (CNT BUF)
<REPEAT ()
<COND (<DLESS? CNT 0> <RETURN>)
(ELSE
<PRINTC <GETB ,P-INBUF .BUF>>
<SET BUF <+ .BUF 1>>)>>>
<ROUTINE UNKNOWN-WORD (PTR "AUX" BUF)
<COND (<VERB? SAY>
<TELL "Nothing happens." CR>
<RFALSE>)>
<TELL "I don't know the word \"">
<WORD-PRINT <GETB <REST ,P-LEXV <SET BUF <* .PTR 2>>> 2>
<GETB <REST ,P-LEXV .BUF> 3>>
<TELL "\"." CR>
<SETG QUOTE-FLAG <>>
<SETG P-OFLAG <>>>
<ROUTINE CANT-USE (PTR "AUX" BUF)
<COND (<VERB? SAY>
<TELL "Nothing happens." CR>
<RFALSE>)>
<TELL "You used the word \"">
<WORD-PRINT <GETB <REST ,P-LEXV <SET BUF <* .PTR 2>>> 2>
<GETB <REST ,P-LEXV .BUF> 3>>
<TELL "\" in a way that I don't understand." CR>
<SETG QUOTE-FLAG <>>
<SETG P-OFLAG <>>>
;" Perform syntax matching operations, using P-ITBL as the source of
the verb and adjectives for this input. Returns false if no
syntax matches, and does it's own orphaning. If return is true,
the syntax is saved in P-SYNTAX."
<GLOBAL P-SLOCBITS 0>
<CONSTANT P-SYNLEN 8>
<CONSTANT P-SBITS 0>
<CONSTANT P-SPREP1 1>
<CONSTANT P-SPREP2 2>
<CONSTANT P-SFWIM1 3>
<CONSTANT P-SFWIM2 4>
<CONSTANT P-SLOC1 5>
<CONSTANT P-SLOC2 6>
<CONSTANT P-SACTION 7>
<CONSTANT P-SONUMS 3>
<ROUTINE SYNTAX-CHECK ("AUX" SYN LEN NUM OBJ
(DRIVE1 <>) (DRIVE2 <>) PREP VERB TMP)
<COND (<0? <SET VERB <GET ,P-ITBL ,P-VERB>>>
<TELL "There was no verb in that sentence!" CR>
<RFALSE>)>
<SET SYN <GET ,VERBS <- 255 .VERB>>>
<SET LEN <GETB .SYN 0>>
<SET SYN <REST .SYN>>
<REPEAT ()
<SET NUM <BAND <GETB .SYN ,P-SBITS> ,P-SONUMS>>
<COND (<G? ,P-NCN .NUM> T)
(<AND <NOT <L? .NUM 1>>
<0? ,P-NCN>
<OR <0? <SET PREP <GET ,P-ITBL ,P-PREP1>>>
<==? .PREP <GETB .SYN ,P-SPREP1>>>>
<SET DRIVE1 .SYN>)
(<==? <GETB .SYN ,P-SPREP1> <GET ,P-ITBL ,P-PREP1>>
<COND (<AND <==? .NUM 2> <==? ,P-NCN 1>>
<SET DRIVE2 .SYN>)
(<==? <GETB .SYN ,P-SPREP2>
<GET ,P-ITBL ,P-PREP2>>
<SYNTAX-FOUND .SYN>
<RTRUE>)>)>
<COND (<DLESS? LEN 1>
<COND (<OR .DRIVE1 .DRIVE2> <RETURN>)
(T
<TELL
"That sentence isn't one I recognize." CR>
<RFALSE>)>)
(T <SET SYN <REST .SYN ,P-SYNLEN>>)>>
<COND (<AND .DRIVE1
<SET OBJ
<GWIM <GETB .DRIVE1 ,P-SFWIM1>
<GETB .DRIVE1 ,P-SLOC1>
<GETB .DRIVE1 ,P-SPREP1>>>>
<PUT ,P-PRSO ,P-MATCHLEN 1>
<PUT ,P-PRSO 1 .OBJ>
<SYNTAX-FOUND .DRIVE1>)
(<AND .DRIVE2
<SET OBJ
<GWIM <GETB .DRIVE2 ,P-SFWIM2>
<GETB .DRIVE2 ,P-SLOC2>
<GETB .DRIVE2 ,P-SPREP2>>>>
<PUT ,P-PRSI ,P-MATCHLEN 1>
<PUT ,P-PRSI 1 .OBJ>
<SYNTAX-FOUND .DRIVE2>)
(<EQUAL? .VERB ,ACT?FIND>
<TELL "That question can't be answered." CR>
<RFALSE>)
(<NOT <==? ,WINNER ,PLAYER>>
(T
<ORPHAN .DRIVE1 .DRIVE2>
<TELL "What do you want to ">
<SET TMP <GET ,P-OTBL ,P-VERBN>>
<COND (<==? .TMP 0> <TELL "tell">)
(<0? <GETB ,P-VTBL 2>>
<PRINTB <GET .TMP 0>>)
(T
<WORD-PRINT <GETB .TMP 2> <GETB .TMP 3>>
<PUTB ,P-VTBL 2 0>)>
<COND (.DRIVE2
<SETG P-OFLAG T>
<PREP-PRINT <COND (.DRIVE1 <GETB .DRIVE1 ,P-SPREP1>)
(T <GETB .DRIVE2 ,P-SPREP2>)>>
<TELL "?" CR>
<RFALSE>)>>
<ROUTINE CANT-ORPHAN ()
<TELL "\"I don't understand! What are you referring to?\"" CR>
<RFALSE>>
<ROUTINE ORPHAN (D1 D2 "AUX" (CNT -1))
<SETG P-CCSRC ,P-ITBL>
<REPEAT ()
<COND (<IGRTR? CNT ,P-ITBLLEN> <RETURN>)
(T <PUT ,P-OTBL .CNT <GET ,P-ITBL .CNT>>)>>
<COND (<==? ,P-NCN 2> <CLAUSE-COPY ,P-NC2 ,P-NC2L>)>
<COND (<NOT <L? ,P-NCN 1>> <CLAUSE-COPY ,P-NC1 ,P-NC1L>)>
<COND (.D1
<PUT ,P-OTBL ,P-PREP1 <GETB .D1 ,P-SPREP1>>
<PUT ,P-OTBL ,P-NC1 1>)
(.D2
<PUT ,P-OTBL ,P-PREP2 <GETB .D2 ,P-SPREP2>>
<PUT ,P-OTBL ,P-NC2 1>)>>
<ROUTINE CLAUSE-PRINT (BPTR EPTR "OPTIONAL" (THE? T))
<BUFFER-PRINT <GET ,P-ITBL .BPTR> <GET ,P-ITBL .EPTR> .THE?>>
<ROUTINE BUFFER-PRINT (BEG END CP "AUX" (NOSP <>) WRD (FIRST?? T) (PN <>))
<REPEAT ()
<COND (<==? .BEG .END> <RETURN>)
(T
<COND (.NOSP <SET NOSP <>>)
(T <TELL " ">)>
<COND (<==? <SET WRD <GET .BEG 0>> ,W?PERIOD>
<SET NOSP T>)
(T
<COND (<AND .FIRST?? <NOT .PN> .CP>
<TELL "the ">)>
<COND (<OR ,P-OFLAG ,P-MERGED> <PRINTB .WRD>)
(<AND <==? .WRD ,W?IT>
<==? ,P-IT-LOC ,HERE>>
<PRINTD ,P-IT-OBJECT>)
(T
<WORD-PRINT <GETB .BEG 2>
<GETB .BEG 3>>)>
<SET FIRST?? <>>)>)>
<SET BEG <REST .BEG ,P-WORDLEN>>>>
<ROUTINE CAPITALIZE (PTR)
<PRINTC <- <GETB ,P-INBUF <GETB .PTR 3>> 32>>
<WORD-PRINT <- <GETB .PTR 2> 1> <+ <GETB .PTR 3> 1>>>
<ROUTINE PREP-PRINT (PREP "AUX" WRD)
<COND (<NOT <0? .PREP>>
<TELL " ">
<SET WRD <PREP-FIND .PREP>>
<PRINTB .WRD>)>>
<ROUTINE CLAUSE-COPY (BPTR EPTR "OPTIONAL" (INSRT <>) "AUX" BEG END)
<SET BEG <GET ,P-CCSRC .BPTR>>
<SET END <GET ,P-CCSRC .EPTR>>
<PUT ,P-OTBL
.BPTR
<REST ,P-OCLAUSE
<+ <* <GET ,P-OCLAUSE ,P-MATCHLEN> ,P-LEXELEN> 2>>>
<REPEAT ()
<COND (<==? .BEG .END>
<PUT ,P-OTBL
.EPTR
<REST ,P-OCLAUSE
<+ <* <GET ,P-OCLAUSE ,P-MATCHLEN> ,P-LEXELEN>
2>>>
<RETURN>)
(T
<COND (<AND .INSRT <==? ,P-ANAM <GET .BEG 0>>>
<CLAUSE-ADD .INSRT>)>
<CLAUSE-ADD <GET .BEG 0>>)>
<SET BEG <REST .BEG ,P-WORDLEN>>>>
<ROUTINE CLAUSE-ADD (WRD "AUX" PTR)
<SET PTR <+ <GET ,P-OCLAUSE ,P-MATCHLEN> 2>>
<PUT ,P-OCLAUSE <- .PTR 1> .WRD>
<PUT ,P-OCLAUSE .PTR 0>
<PUT ,P-OCLAUSE ,P-MATCHLEN .PTR>>
<ROUTINE PREP-FIND (PREP "AUX" (CNT 0) SIZE)
<SET SIZE <* <GET ,PREPOSITIONS 0> 2>>
<REPEAT ()
<COND (<IGRTR? CNT .SIZE> <RFALSE>)
(<==? <GET ,PREPOSITIONS .CNT> .PREP>
<RETURN <GET ,PREPOSITIONS <- .CNT 1>>>)>>>
<ROUTINE SYNTAX-FOUND (SYN)
<SETG P-SYNTAX .SYN>
<SETG PRSA <GETB .SYN ,P-SACTION>>>

A filter used when GWIM searches for objects. For example, for an IGNITE command, P-GWIMBIT would be set to FLAMEBIT so the parser can search for a flaming object.

<GLOBAL P-GWIMBIT 0>

“Get What I Mean”. The parser uses this to infer a missing object or ask a disambiguation question.

<ROUTINE GWIM (GBIT LBIT PREP "AUX" OBJ)
<COND (<==? .GBIT ,RMUNGBIT>
<RETURN ,ROOMS>)>
<SETG P-GWIMBIT .GBIT>
<SETG P-SLOCBITS .LBIT>
<PUT ,P-MERGE ,P-MATCHLEN 0>
<COND (<GET-OBJECT ,P-MERGE <>>
<SETG P-GWIMBIT 0>
<COND (<==? <GET ,P-MERGE ,P-MATCHLEN> 1>
<COND (<EQUAL? <SET OBJ <GET ,P-MERGE 1>> ,ME>
<RFALSE>)>
<TELL "(">
<COND (<NOT <0? .PREP>>
<PRINTB <SET PREP <PREP-FIND .PREP>>>
<COND (<==? .PREP ,W?OUT>
<TELL " of">)>
<COND (<==? .OBJ ,HANDS>
<TELL " your hands)" CR>)
(T
<TELL " the ">)>)>
<COND (<NOT <==? .OBJ ,HANDS>>
<TELL D .OBJ ")" CR>)>
.OBJ)>)
(T <SETG P-GWIMBIT 0> <RFALSE>)>>
<ROUTINE SNARF-OBJECTS ("AUX" PTR)
<COND (<NOT <==? <SET PTR <GET ,P-ITBL ,P-NC1>> 0>>
<SETG P-SLOCBITS <GETB ,P-SYNTAX ,P-SLOC1>>
<OR <SNARFEM .PTR <GET ,P-ITBL ,P-NC1L> ,P-PRSO> <RFALSE>>
<OR <0? <GET ,P-BUTS ,P-MATCHLEN>>
<SETG P-PRSO <BUT-MERGE ,P-PRSO>>>)>
<COND (<NOT <==? <SET PTR <GET ,P-ITBL ,P-NC2>> 0>>
<SETG P-SLOCBITS <GETB ,P-SYNTAX ,P-SLOC2>>
<OR <SNARFEM .PTR <GET ,P-ITBL ,P-NC2L> ,P-PRSI> <RFALSE>>
<COND (<NOT <0? <GET ,P-BUTS ,P-MATCHLEN>>>
<COND (<==? <GET ,P-PRSI ,P-MATCHLEN> 1>
<SETG P-PRSO <BUT-MERGE ,P-PRSO>>)
(T <SETG P-PRSI <BUT-MERGE ,P-PRSI>>)>)>)>
<RTRUE>>
<ROUTINE BUT-MERGE (TBL "AUX" LEN BUTLEN (CNT 1) (MATCHES 0) OBJ NTBL)
<SET LEN <GET .TBL ,P-MATCHLEN>>
<PUT ,P-MERGE ,P-MATCHLEN 0>
<REPEAT ()
<COND (<DLESS? LEN 0> <RETURN>)
(<ZMEMQ <SET OBJ <GET .TBL .CNT>> ,P-BUTS>)
(T
<PUT ,P-MERGE <+ .MATCHES 1> .OBJ>
<SET MATCHES <+ .MATCHES 1>>)>
<SET CNT <+ .CNT 1>>>
<PUT ,P-MERGE ,P-MATCHLEN .MATCHES>
<SET NTBL ,P-MERGE>
<SETG P-MERGE .TBL>
.NTBL>
<GLOBAL P-NAM <>>
<GLOBAL P-ADJ <>>
<GLOBAL P-ADVERB <>>
<GLOBAL P-ADJN <>>
<GLOBAL P-PRSO <ITABLE NONE 50>>
<GLOBAL P-PRSI <ITABLE NONE 50>>
<GLOBAL P-BUTS <ITABLE NONE 50>>
<GLOBAL P-MERGE <ITABLE NONE 50>>
<GLOBAL P-OCLAUSE <ITABLE NONE 50>>
<GLOBAL P-MATCHLEN 0>
<GLOBAL P-GETFLAGS 0>
<CONSTANT P-ALL 1>
<CONSTANT P-ONE 2>
<CONSTANT P-INHIBIT 4>
<GLOBAL P-CSPTR <>>
<GLOBAL P-CEPTR <>>
<GLOBAL P-AND <>>
<ROUTINE SNARFEM (PTR EPTR TBL "AUX" (BUT <>) LEN WV WRD NW)
<SETG P-GETFLAGS 0>
<SETG P-CSPTR .PTR>
<SETG P-CEPTR .EPTR>
<SETG P-AND <>>
<PUT ,P-BUTS ,P-MATCHLEN 0>
<PUT .TBL ,P-MATCHLEN 0>
<SET WRD <GET .PTR 0>>
<REPEAT ()
<COND (<==? .PTR .EPTR> <RETURN <GET-OBJECT <OR .BUT .TBL>>>)
(T
<SET NW <GET .PTR ,P-LEXELEN>>
<COND (<==? .WRD ,W?ALL>
<SETG P-GETFLAGS ,P-ALL>
<COND (<==? .NW ,W?OF>
<SET PTR <REST .PTR ,P-WORDLEN>>)>)
(<EQUAL? .WRD ,W?BUT ,W?EXCEPT>
<OR <GET-OBJECT <OR .BUT .TBL>> <RFALSE>>
<SET BUT ,P-BUTS>
<PUT .BUT ,P-MATCHLEN 0>)
(<EQUAL? .WRD ,W?A ,W?ONE>
<COND (<NOT ,P-ADJ>
<SETG P-GETFLAGS ,P-ONE>
<COND (<==? .NW ,W?OF>
<SET PTR <REST .PTR ,P-WORDLEN>>)>)
(T
<SETG P-NAM ,P-ONEOBJ>
<OR <GET-OBJECT <OR .BUT .TBL>> <RFALSE>>
<AND <0? .NW> <RTRUE>>)>)
(<AND <EQUAL? .WRD ,W?AND ,W?COMMA>
<NOT <EQUAL? .NW ,W?AND ,W?COMMA>>>
<SETG P-AND T>
<OR <GET-OBJECT <OR .BUT .TBL>> <RFALSE>>
T)
(<WT? .WRD ,PS?BUZZ-WORD>)
(<EQUAL? .WRD ,W?AND ,W?COMMA>)
(<==? .WRD ,W?OF>
<COND (<0? ,P-GETFLAGS>
<SETG P-GETFLAGS ,P-INHIBIT>)>)
(<AND <SET WV <WT? .WRD ,PS?ADJECTIVE ,P1?ADJECTIVE>>
<NOT ,P-ADJ>>
<SETG P-ADJ .WV>
<SETG P-ADJN .WRD>)
(<WT? .WRD ,PS?OBJECT ,P1?OBJECT>
<SETG P-NAM .WRD>
<SETG P-ONEOBJ .WRD>)>)>
<COND (<NOT <==? .PTR .EPTR>>
<SET PTR <REST .PTR ,P-WORDLEN>>
<SET WRD .NW>)>>>
<CONSTANT SH 128>
<CONSTANT SC 64>
<CONSTANT SIR 32>
<CONSTANT SOG 16>
<CONSTANT STAKE 8>
<CONSTANT SMANY 4>
<CONSTANT SHAVE 2>
<ROUTINE GET-OBJECT (TBL
"OPTIONAL" (VRB T)
"AUX" BITS LEN XBITS TLEN (GCHECK <>) (OLEN 0) OBJ)
<SET XBITS ,P-SLOCBITS>
<SET TLEN <GET .TBL ,P-MATCHLEN>>
<COND (<BTST ,P-GETFLAGS ,P-INHIBIT> <RTRUE>)>
<COND (<AND <NOT ,P-NAM> ,P-ADJ <WT? ,P-ADJN ,PS?OBJECT ,P1?OBJECT>>
<SETG P-NAM ,P-ADJN>
<SETG P-ADJ <>>)>
<COND (<AND <NOT ,P-NAM>
<NOT ,P-ADJ>
<NOT <==? ,P-GETFLAGS ,P-ALL>>
<0? ,P-GWIMBIT>>
<COND (.VRB
<TELL
"There seems to be a noun missing in that sentence!" CR>)>
<RFALSE>)>
<COND (<OR <NOT <==? ,P-GETFLAGS ,P-ALL>> <0? ,P-SLOCBITS>>
<SETG P-SLOCBITS -1>)>
<SETG P-TABLE .TBL>
<PROG ()
<COND (.GCHECK <GLOBAL-CHECK .TBL>)
(T
<COND (,LIT
<FCLEAR ,PLAYER ,TRANSBIT>
<FSET ,PLAYER ,TRANSBIT>)>
<DO-SL ,PLAYER ,SH ,SC>)>
<SET LEN <- <GET .TBL ,P-MATCHLEN> .TLEN>>
<COND (<BTST ,P-GETFLAGS ,P-ALL>)
(<AND <BTST ,P-GETFLAGS ,P-ONE>
<NOT <0? .LEN>>>
<COND (<NOT <==? .LEN 1>>
<PUT .TBL 1 <GET .TBL <RANDOM .LEN>>>
<TELL "(How about the ">
<PRINTD <GET .TBL 1>>
<TELL "?)" CR>)>
<PUT .TBL ,P-MATCHLEN 1>)
(<OR <G? .LEN 1>
<AND <0? .LEN> <NOT <==? ,P-SLOCBITS -1>>>>
<COND (<==? ,P-SLOCBITS -1>
<SETG P-SLOCBITS .XBITS>
<SET OLEN .LEN>
<PUT .TBL
<- <GET .TBL ,P-MATCHLEN> .LEN>>
<AGAIN>)
(T
<COND (<0? .LEN> <SET LEN .OLEN>)>
<COND (<NOT <==? ,WINNER ,PLAYER>>
<RFALSE>)
(<AND .VRB ,P-NAM>
<WHICH-PRINT .TLEN .LEN .TBL>
<SETG P-ACLAUSE
<COND (<==? .TBL ,P-PRSO> ,P-NC1)
(T ,P-NC2)>>
<SETG P-AADJ ,P-ADJ>
<SETG P-ANAM ,P-NAM>
<ORPHAN <> <>>
<SETG P-OFLAG T>)
(.VRB
<TELL
"There seems to be a noun missing in that sentence!" CR>)>
<SETG P-NAM <>>
<SETG P-ADJ <>>
<RFALSE>)>)
(<AND <0? .LEN> .GCHECK>
<COND (.VRB
<COND (,LIT
;"Changed 6/10/83 - MARC"
<SETG P-XNAM ,P-NAM>
<SETG P-XADJ ,P-ADJ>
<SETG P-XADJN ,P-ADJN>
<SETG P-NAM <>>
<SETG P-ADJ <>>
<SETG P-ADJN <>>
<RTRUE>)
(T <TELL "It's too dark to see!" CR>)>)>
<SETG P-NAM <>>
<SETG P-ADJ <>>
<RFALSE>)
(<0? .LEN> <SET GCHECK T> <AGAIN>)>
<SETG P-SLOCBITS .XBITS>
<SETG P-NAM <>>
<SETG P-ADJ <>>
<RTRUE>>>
<ROUTINE MOBY-FIND (TBL "AUX" FOO LEN)
<SETG P-SLOCBITS -1>
<SETG P-NAM ,P-XNAM>
<SETG P-ADJ ,P-XADJ>
<PUT .TBL ,P-MATCHLEN 0>
<SET FOO <FIRST? ,ROOMS>>
<REPEAT ()
<COND (<NOT .FOO> <RETURN>)
(T
<SEARCH-LIST .FOO .TBL ,P-SRCALL>
<SET FOO <NEXT? .FOO>>)>>
<COND (<EQUAL? <SET LEN <GET .TBL ,P-MATCHLEN>> 0>
<COND (<EQUAL? <SET LEN <GET .TBL ,P-MATCHLEN>> 0>
<DO-SL ,ROOMS 1 1>)>
<COND (<EQUAL? <SET LEN <GET .TBL ,P-MATCHLEN>> 1>
<SETG P-MOBY-FOUND <GET .TBL 1>>)>
<SETG P-NAM <>>
<SETG P-ADJ <>>
.LEN>
<GLOBAL P-MOBY-FOUND <>>
<GLOBAL P-XNAM <>>
<GLOBAL P-XADJ <>>
<GLOBAL P-XADJN <>>
<ROUTINE WHICH-PRINT (TLEN LEN TBL "AUX" OBJ RLEN)
<SET RLEN .LEN>
<TELL "Which">
<COND (<OR ,P-OFLAG ,P-MERGED ,P-AND> <TELL " "> <PRINTB ,P-NAM>)
(<==? .TBL ,P-PRSO>
<TELL " do you mean, ">
<REPEAT ()
<SET TLEN <+ .TLEN 1>>
<SET OBJ <GET .TBL .TLEN>>
<TELL "the " D .OBJ>
<COND (<==? .LEN 2>
<COND (<NOT <==? .RLEN 2>> <TELL ",">)>
<TELL " or ">)
(<G? .LEN 2> <TELL ", ">)>
<COND (<L? <SET LEN <- .LEN 1>> 1>
<TELL "?" CR>
<RETURN>)>>>
<ROUTINE GLOBAL-CHECK (TBL "AUX" LEN RMG RMGL (CNT 0) OBJ OBITS FOO)
<SET LEN <GET .TBL ,P-MATCHLEN>>
<SET OBITS ,P-SLOCBITS>
<COND (<SET RMG <GETPT ,HERE ,P?GLOBAL>>
<SET RMGL <- <PTSIZE .RMG> 1>>
<REPEAT ()
<COND (<THIS-IT? <SET OBJ <GETB .RMG .CNT>> .TBL>
<OBJ-FOUND .OBJ .TBL>)>
<COND (<IGRTR? CNT .RMGL> <RETURN>)>>)>
<COND (<SET RMG <GETPT ,HERE ,P?PSEUDO>>
<SET RMGL <- </ <PTSIZE .RMG> 4> 1>>
<SET CNT 0>
<REPEAT ()
<COND (<==? ,P-NAM <GET .RMG <* .CNT 2>>>
<GET .RMG <+ <* .CNT 2> 1>>>
<SET FOO
<BACK <GETPT ,PSEUDO-OBJECT ,P?ACTION> 5>>
<PUT .FOO 0 <GET ,P-NAM 0>>
<PUT .FOO 1 <GET ,P-NAM 1>>
<RETURN>)
(<IGRTR? CNT .RMGL> <RETURN>)>>)>
<COND (<==? <GET .TBL ,P-MATCHLEN> .LEN>
<SETG P-SLOCBITS -1>
<SETG P-TABLE .TBL>
<SETG P-SLOCBITS .OBITS>
<COND (<AND <0? <GET .TBL ,P-MATCHLEN>>
<EQUAL? ,PRSA ,V?LOOK-INSIDE ,V?SEARCH ,V?EXAMINE>>
<DO-SL ,ROOMS 1 1>)>)>>
<ROUTINE DO-SL (OBJ BIT1 BIT2 "AUX" BTS)
<COND (<BTST ,P-SLOCBITS <+ .BIT1 .BIT2>>
(T
<COND (<BTST ,P-SLOCBITS .BIT1>
(<BTST ,P-SLOCBITS .BIT2>
(T <RTRUE>)>)>>
<CONSTANT P-SRCBOT 2>
<CONSTANT P-SRCTOP 0>
<CONSTANT P-SRCALL 1>
<ROUTINE SEARCH-LIST (OBJ TBL LVL "AUX" FLS NOBJ)
<COND (<SET OBJ <FIRST? .OBJ>>
<REPEAT ()
<COND (<AND <NOT <==? .LVL ,P-SRCBOT>>
<GETPT .OBJ ,P?SYNONYM>
<THIS-IT? .OBJ .TBL>>
<OBJ-FOUND .OBJ .TBL>)>
<COND (<AND <OR <NOT <==? .LVL ,P-SRCTOP>>
<FSET? .OBJ ,SEARCHBIT>
<FSET? .OBJ ,SURFACEBIT>>
<SET NOBJ <FIRST? .OBJ>>
<OR <FSET? .OBJ ,OPENBIT>
<FSET? .OBJ ,TRANSBIT>>>
<SET FLS
<SEARCH-LIST .OBJ
.TBL
<COND (<FSET? .OBJ ,SURFACEBIT>
(<FSET? .OBJ ,SEARCHBIT>
(T ,P-SRCTOP)>>>)>
<COND (<SET OBJ <NEXT? .OBJ>>) (T <RETURN>)>>)>>
<ROUTINE OBJ-FOUND (OBJ TBL "AUX" PTR)
<SET PTR <GET .TBL ,P-MATCHLEN>>
<PUT .TBL <+ .PTR 1> .OBJ>
<PUT .TBL ,P-MATCHLEN <+ .PTR 1>>>
<ROUTINE TAKE-CHECK ()
<ROUTINE ITAKE-CHECK (TBL IBITS "AUX" PTR OBJ TAKEN)
#DECL ((TBL) TABLE (IBITS PTR) FIX (OBJ) OBJECT
(TAKEN) <OR FALSE FIX ATOM>)
<COND (<AND <SET PTR <GET .TBL ,P-MATCHLEN>>
<OR <BTST .IBITS ,SHAVE>
<BTST .IBITS ,STAKE>>>
<REPEAT ()
<COND (<L? <SET PTR <- .PTR 1>> 0> <RETURN>)
(T
<SET OBJ <GET .TBL <+ .PTR 1>>>
<COND (<==? .OBJ ,IT> <SET OBJ ,P-IT-OBJECT>)>
<COND (<AND <NOT <HELD? .OBJ>>
<NOT <==? .OBJ ,HANDS>>>
<SETG PRSO .OBJ>
<COND (<FSET? .OBJ ,TRYTAKEBIT>
<SET TAKEN T>)
(<NOT <==? ,WINNER ,ADVENTURER>>
<SET TAKEN <>>)
(<AND <BTST .IBITS ,STAKE>
<==? <ITAKE <>> T>>
<SET TAKEN <>>)
(T <SET TAKEN T>)>
<COND (<AND .TAKEN <BTST .IBITS ,SHAVE>>
<COND (<EQUAL? .OBJ
<TELL
"You don't have that!" CR>
<RFALSE>)>
<TELL "You don't have the ">
<PRINTD .OBJ>
<TELL "." CR>
<RFALSE>)
(<AND <NOT .TAKEN>
<==? ,WINNER ,ADVENTURER>>
<TELL "(Taken)" CR>)>)>)>>)
(T)>>
<ROUTINE MANY-CHECK ("AUX" (LOSS <>) TMP)
<COND (<AND <G? <GET ,P-PRSO ,P-MATCHLEN> 1>
<NOT <BTST <GETB ,P-SYNTAX ,P-SLOC1> ,SMANY>>>
<SET LOSS 1>)
(<AND <G? <GET ,P-PRSI ,P-MATCHLEN> 1>
<NOT <BTST <GETB ,P-SYNTAX ,P-SLOC2> ,SMANY>>>
<SET LOSS 2>)>
<COND (.LOSS
<TELL "You can't use multiple ">
<COND (<==? .LOSS 2> <TELL "in">)>
<TELL "direct objects with \"">
<SET TMP <GET ,P-ITBL ,P-VERBN>>
<COND (<0? .TMP> <TELL "tell">)
(<OR ,P-OFLAG ,P-MERGED>
<PRINTB <GET .TMP 0>>)
(T
<WORD-PRINT <GETB .TMP 2> <GETB .TMP 3>>)>
<TELL "\"." CR>
<RFALSE>)
(T)>>
<ROUTINE ZMEMQ (ITM TBL "OPTIONAL" (SIZE -1) "AUX" (CNT 1))
<COND (<NOT .TBL> <RFALSE>)>
<COND (<NOT <L? .SIZE 0>> <SET CNT 0>)
(ELSE <SET SIZE <GET .TBL 0>>)>
<REPEAT ()
<COND (<==? .ITM <GET .TBL .CNT>> <RTRUE>)
(<IGRTR? CNT .SIZE> <RFALSE>)>>>
<ROUTINE ZMEMQB (ITM TBL SIZE "AUX" (CNT 0))
<REPEAT ()
<COND (<==? .ITM <GETB .TBL .CNT>> <RTRUE>)
(<IGRTR? CNT .SIZE> <RFALSE>)>>>

Whether the player is inherently emitting light. This is set when you are dead, so that you can move spectrally around the world without carrying a light source.

<GLOBAL ALWAYS-LIT <>>

Determine whether the current location has light. This is true if the room or anything in it has ONBIT. It’s also true if the player is ALWAYS-LIT.

This routine is always used to set the LIT variable.

<ROUTINE LIT? (RM "OPTIONAL" (RMBIT T) "AUX" OHERE (LIT <>))
<COND (<AND ,ALWAYS-LIT <EQUAL? ,WINNER ,PLAYER>>
<RTRUE>)>
<SETG P-GWIMBIT ,ONBIT>
<SET OHERE ,HERE>
<SETG HERE .RM>
<COND (<AND .RMBIT
<FSET? .RM ,ONBIT>>
<SET LIT T>)
(T
<PUT ,P-MERGE ,P-MATCHLEN 0>
<SETG P-TABLE ,P-MERGE>
<SETG P-SLOCBITS -1>
<COND (<==? .OHERE .RM>
<DO-SL ,WINNER 1 1>
<COND (<AND <NOT <EQUAL? ,WINNER ,PLAYER>>
<IN? ,PLAYER .RM>>
<DO-SL ,PLAYER 1 1>)>)>
<DO-SL .RM 1 1>
<COND (<G? <GET ,P-TABLE ,P-MATCHLEN> 0> <SET LIT T>)>)>
<SETG HERE .OHERE>
<SETG P-GWIMBIT 0>
.LIT>
<ROUTINE PRSO-PRINT ("AUX" PTR)
<COND (<OR ,P-MERGED
<==? <GET <SET PTR <GET ,P-ITBL ,P-NC1>> 0> ,W?IT>>
<TELL " " D ,PRSO>)
(T <BUFFER-PRINT .PTR <GET ,P-ITBL ,P-NC1L> <>>)>>
<ROUTINE PRSI-PRINT ("AUX" PTR)
<COND (<OR ,P-MERGED
<==? <GET <SET PTR <GET ,P-ITBL ,P-NC2>> 0> ,W?IT>>
<TELL " " D ,PRSO>)
(T <BUFFER-PRINT .PTR <GET ,P-ITBL ,P-NC2L> <>>)>>
;"former CRUFTY routine, re-written by SWG"
<ROUTINE THIS-IT? (OBJ TBL "AUX" SYNS)
<COND (<FSET? .OBJ ,INVISIBLE> <RFALSE>)
(<AND ,P-NAM
<NOT <ZMEMQ ,P-NAM
<SET SYNS <GETPT .OBJ ,P?SYNONYM>>
<- </ <PTSIZE .SYNS> 2> 1>>>>
<RFALSE>)
(<AND ,P-ADJ
<OR <NOT <SET SYNS <GETPT .OBJ ,P?ADJECTIVE>>>
<NOT <ZMEMQB ,P-ADJ .SYNS <- <PTSIZE .SYNS> 1>>>>>
<RFALSE>)
(<AND <NOT <0? ,P-GWIMBIT>> <NOT <FSET? .OBJ ,P-GWIMBIT>>>
<RFALSE>)>
<RTRUE>>