78 lines
7.6 KiB
Rexx
78 lines
7.6 KiB
Rexx
/*REXX pgm scores mastermind game with a human or CBLFs (Carbon Based Life Forms). */
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parse arg let wid mxG oRep seed _ /*obtain optional arguments from the CL*/
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arg . . . rep . /*get uppercase 4th argument " " " */
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if let=='' | let=="," then let= 20 /*Not specified? Then use the default.*/
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if wid=='' | wid=="," then wid= 4 /* " " " " " " */
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if mxG=='' | mxG=="," then mxG= 20 /* " " " " " " */
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if rep=='' | rep=="," then rep= 0 /* " " " " " " */
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if datatype(seed,'W') then call random ,,seed /*use a seed for random repeatability. */
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if abbrev( 'REPEATSALLOWED',rep,3) then rep=1 /*allow an abbreviated option for REP. */
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if abbrev('NOREPEATSALLOWED',rep,3) then rep=0 /* " " " " " " */
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call vet arg(), 'args' /*Vet the number of arguments entered. */ /*◄■■■■■■ optional vetting.*/
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call vet let, 'letters', 2, 20 /* " " " " letters in the code*/ /*◄■■■■■■ optional vetting.*/
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call vet wid, 'width', 4, 10 /* " " " " the width of code. */ /*◄■■■■■■ optional vetting.*/
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call vet mxG, 'maxGuess', 7, 20 /* " " " " maximum guesses. */ /*◄■■■■■■ optional vetting.*/
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call vet rep, 'REP', 0, 1e8 /* " " value if repeats are allowed*/ /*◄■■■■■■ optional vetting.*/
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call gen; yourG= 'Your guess must be exactly '
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youve= "You've already tried that guess "
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do prompt=0 by 0 until xx==wid; say /*play until guessed or QUIT is entered*/
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say id 'Please enter a guess with ' wid ' letters [or Quit]:'
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pull g; g=space(g,0); L=length(g); if abbrev('QUIT',g,1) then exit 0
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if L\==wid then do; say id '***error***' yourG wid " letters."; iterate; end
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call dups /*look through the history log for dups*/
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q=?; XX=0; OO=0; try=try+1 /*initialize some REXX vars; bump TRY.*/
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do j=1 for L; if substr(g,j,1) \== substr(q,j,1) then iterate /*hit? */
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xx=xx+1; q=overlay('▒', q, j) /*bump the XX correct count. */
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end /*j*/ /* [↑] XX correct count; scrub guess.*/
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do k=1 for L; _=substr(g, k, 1) /*process the count for "spots". */
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if pos(_, q)==0 then iterate /*is this (spot) letter in the code? */
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oo=oo+1; q=translate(q, , _) /*bump the OO spot count. */
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end /*k*/ /* [↑] OO spot count; & scrub guess.*/
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say
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@.try=id right('guess' try, 11) ' ('mxG "is the max):" g '──►' ,
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copies('X', xx)copies("O", oo)copies('-', wid-xx-oo)
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call hist
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if try==mxG then do; say; say id "you've used the maximum guesses:" mxG
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say; say id "The code was: " ?; say; exit 1
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end
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end /*prompt*/
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say; say " ┌─────────────────────────────────────────┐"
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say " │ │"
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say " │ Congratulations, you've guessed it !! │"
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say " │ │"
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say " └─────────────────────────────────────────┘"
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exit 0 /*stick a fork in it, we're all done. */
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/*──────────────────────────────────────────────────────────────────────────────────────*/
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dups: do h=1 for try; if g\=word(@.h, 8) then iterate /*any duplicated guesses? */
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say; say id youve " (guess number" h').'; iterate prompt; end /*h*/; return
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/*──────────────────────────────────────────────────────────────────────────────────────*/
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gen: if rep==0 then reps= 'no' /*create a literal for the prompt msg. */
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else reps=
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@abc= 'QWERTYUIOPASDFGHJKLZXCVBNM' /*capital letters used for random code.*/
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id='────────'; try=0; L@abc=length(@abc) /*identifier in front of msg from here.*/
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?=
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do until length(?)==wid /*gen random codes 'til there's enough.*/
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r=substr(@abc, random(1, L@abc), 1) /*generate a random letter, 1 at a time*/
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if \rep & pos(r, ?)\==0 then iterate /*maybe don't allow a repeated digit.*/
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?=? || r; if ?=='QUIT'&let==4 then ?= /*append random letter; ··· except this*/
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end /*until*/ /* [↑] builds a unique N-letter code.*/
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say
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say id 'A random code of ' wid "letters (out of a possible " let ' letters) '
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say id 'has been generated (with' reps "repeats)."
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return
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/*──────────────────────────────────────────────────────────────────────────────────────*/
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hist: do hist=1 for try; say @.hist; end; return /*show "guess" history.*/
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s: if arg(1)==1 then return ''; return "s" /*a simpler pluraizer. */
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ser: say; say; say '***error***' arg(1); say; say; exit 13
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/*──────────────────────────────────────────────────────────────────────────────────────*/ /*◄■■■■■■ optional vetting.*/
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vet: parse arg val,?,mn,mx /*vet (validate) a specified argument. */ /*◄■■■■■■ optional vetting.*/
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if ?=="args" & (val>1 | _\='') then call ser "Too many arguments specified. " _ /*◄■■■■■■ optional vetting.*/
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if ?=="args" then return /*◄■■■■■■ optional vetting.*/
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if \datatype(val, 'N') then call ser ? "isn't numeric: " val /*◄■■■■■■ optional vetting.*/
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if \datatype(val, 'W') then call ser ? "isn't an integer: " val /*◄■■■■■■ optional vetting.*/
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if val < mn then call ser ? "has a value less than " mn /*◄■■■■■■ optional vetting.*/
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if val > mx then call ser ? "has a value greater than " mx /*◄■■■■■■ optional vetting.*/
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if ?=='REP' & \datatype(val,W) then call ser "Value for REPEATS isn't valid: " oRep /*◄■■■■■■ optional vetting.*/
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return 1
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