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Comment by dunham | Hacker News Reader

This reminds me that back in the 80's, David Betz wrote an object-oriented lisp dialect called advsys for authoring text adventures.

I recently rediscovered in on github at https://github.com/dbetz/advsys

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Some time ago I wrote something similar in Scheme. It outputs the game as a large set of HTML pages.

Code: http://t3x.org/s9fes/advgen.scm.html

Sample adventure: http://t3x.org/s9game/index.html

Code of the sample adventure: http://t3x.org/s9fes/adventure.adv.html

Thanks for linking that - it's a nice system with clean syntax -

  (location livingroom  
    (property  
      description "This appears to be the livingroom.  There is a hallway to  
                   the north and a closet to the west."   
      short-description "You are in the livingroom."   
      north hallway  
      west closet  
      south front-door-1))

https://github.com/dbetz/advsys/blob/master/osample.adv

compared with something like MDL -

  <DEFINE EAST-HOUSE ()  
      <COND (<VERB? "LOOK">  
      <TELL   
  "You are behind the white house.  In one corner of the house there  
  is a small window which is " ,LONG-TELL1 <COND (<TRNN 
  <SFIND-OBJ "WINDO"> ,OPENBIT>  
              "open.")  
            ("slightly ajar.")>>)>>

https://github.com/historicalsource/zork-mdl/blob/master/act...

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