retroforth/example/magic-8th-ball.retro

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This is based on Ron Aaron's "Magic 8th Ball" - CLI version.
See https://8th-dev.com/forum/index.php/topic,1864.msg10733.html
First is the list of responses. This is just an array.
~~~
{ 'OK
'Yes
'Absolutely!
'Surely
'Perhaps
'Could_be
'Hard_to_say
'Maybe
'Unclear
'Ask_later
'Down_for_maintenance
'ABEND_12345
'No
'Definitely_not!
'Leave_me_alone
} 'PROPHESIES const
~~~
To get a random prophecy: get the length of the array, a random
number, and calculate an index based on these to fetch.
~~~
:prophesy (-s)
PROPHESIES dup a:length n:random n:abs swap mod a:fetch ;
~~~
This finishes the core of the application. The remaining part is
the user interface. RETRO doesn't have GUI bindings, so I'm only
implementing the CLI interface.
My approach is a little different from the original. I split the
input "processing" into a separate word. RETRO doesn't have a
null string, so I left out the check for that. Exit with CTRL+C.
~~~
:process-input (s-)
s:empty [ 'C'mon,_don't_be_like_that!_Ask_a_question: s:put nl ] s:case
drop prophesy '\nThe_8th_ball_says:\n\t%s\n\n s:format s:put
'\nAsk_again_and_you_shall_be_answered:\n s:format s:put ;
:8th-ball-cli (-)
'Ask_your_question_of_the_8th-ball.__Satisfaction_guaranteed! s:put nl
repeat
s:get process-input
again ;
~~~