82 lines
3.2 KiB
Text
82 lines
3.2 KiB
Text
= advent(6) =
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:doctype: manpage
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== NAME ==
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advent - Colossal Cave Adventure
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== SYNOPSIS ==
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*advent* [-l logfile] [-o] [-r savefile] [script...]
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== DESCRIPTION ==
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The original Colossal Cave Adventure from 1976-77 was the origin of all
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later text adventures, dungeon-crawl (computer) games, and computer-hosted
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roleplaying games.
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This is the last version released by Crowther & Woods, its original
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authors, in 1995. It has been known as "adventure 2.5" and "430-point
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adventure". To learn more about the changes since the 350-point
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original, type 'news' at the command prompt.
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There is an 'adventure' in the BSD games package that is a C port by
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Jim Gillogly of the 1976 ancestor of this game. To avoid a name
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collision, this game builds as 'advent', reflecting the fact that the
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PDP-10 on which the game originally ran limited filenames to 6 characters.
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This version is released as open source with the permission and
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encouragement of the original authors.
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Unlike the original, this version supports use of your arrow keys to edit
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your command line in place. Basic Emacs keystrokes are supported, and
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your up/down arrows access a command history.
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Otherwise, the "version" command is about the only way to tell you're not
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running Don's original.
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To exit the game, type Ctrl-D (EOF).
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There have been no gameplay changes.
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== OPTIONS ==
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-l:: Log commands to specified file.
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-r:: Restore game from specified file
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-o:: Old-style. Restores original interface, no prompt or line editing.
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Also ignores new-school one-letter commands l, x, g, z, i. Also
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case-smashes and truncates unrecognized text when echoed.
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Normally, game input is taken from standard input. If script file
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arguments are given, input is taken fron them instead. A script file
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argument of '-' is taken as a directive to read from standard input.
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== BUGS ==
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The binary save file format is fragile, dependent on your machine word
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size and endianness, and unlikely to survive through version bumps. There
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is a version check.
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The input parser was the first attempt *ever* at natural-language
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parsing in a game and has some known deficiencies. While later text
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adventures distinguished between transitive and intransitive verbs,
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Adventure's grammar distinguishes only between motion and action
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verbs. Motions are always immediate in their behavior, so both ACTION
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MOTION and MOTION ACTION (and even MOTION NOUN and MOTION MOTION) are
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invariably equivalent to MOTION (thus GO NORTH means NORTH and JUMP
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DOWN means JUMP). Whereas, with actions and nouns, the parser collects
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words until it's seen one of each, and then dispatches; if it reaches
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the end of the command without seeing a noun, it'll dispatch an
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"intransitive" action. This makes ACTION1 ACTION2 equivalent to
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ACTION2 (thus TAKE INVENTORY means INVENTORY), and NOUN ACTION
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equivalent to ACTION NOUN.
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Thus you get anomalies like "eat building" interpreted as a command
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to move to the building. These should not be reported as bugs; instead,
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consider them historical curiosities.
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== REPORTING BUGS ==
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Report bugs to Eric S. Raymond <esr@thyrsus.com>. The project page is
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at http://catb.org/~esr/open-adventure
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== SEE ALSO ==
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wumpus(6), adventure(6), zork(6), rogue(6), nethack(6).
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