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xzip(1)			    General Commands Manual		       xzip(1)

Name
       xzip - X	Interface to the Z-code	Interpreter

Syntax
       xzip [ options ...  ] gamefile

       The  list  of  options  is  described below. The	gamefile should	be the
       filename	of a Z-code file or a PICKLE archive containing	a Z-code file.

Description
       xzip is a clean X Windows interface to games written  in	 Infocom's  Z-
       code  game  format.  It	handles	 Z-code	versions 1 through 5, plus the
       newer version 8.

       The interface is	heavily	(well, completely) based on ATK, an X  toolkit
       developed at CMU. Really, I would have preferred	to actually do this in
       ATK... except that then you'd  need  ATK	 to  run  it,  and  that's  50
       megabytes of source code. (Honest.) So I	just did an imitation.

Mouse Commands
       In the text window:

       Left-click to move the dot to the mouse location.
       Click-and-drag to select	a large	region.
       Right-click to extend the selection to the mouse	location.
       Double-clicking	selects	a word (or extends the selection one word at a
       time).

       In the scroll bar:

       Left-click on the arrows	to scroll to the top or	bottom.
       Right-click on the arrows to scroll up or down one line.
       Click-and-drag on the elevator will scroll up and down smoothly.
       Left-click in the bar (without dragging)	will scroll down by an	amount
       controlled by where in the bar you click. The farther down the bar, the
       more it scrolls.	This is	computed so that if you	left-click next	 to  a
       line, that line scrolls to the top of the screen.
       Right-click  in	the bar	(without dragging) will	scroll up in a similar
       manner. The top line will scroll	down to	where you clicked.

Key Commands
       The key commands	will be	familiar to Emacs users.   meta-  combinations
       can  be used either by holding down the meta key	(possibly labelled alt
       or something else) or by	pressing escape	before the desired key.

       The commands listed below are the defaults. They	can be customized with
       the  bindings X resource	(see below.) <none> indicates a	function which
       by default is not bound to any key.

       ctrl-f (forward-char) Move dot forward one character.
       ctrl-b (backward-char) Move dot backward	one character.
       meta-f (forward-word) Move dot forward one word.
       meta-b (backward-word) Move dot backward	one word.
       ctrl-a (beginning-of-line) Move dot to beginning	of line.
       ctrl-e (end-of-line) Move dot to	end of line.

       PageDown, ctrl-v	(scroll-down) Scroll down one page.
       PageUp, meta-v (scroll-up) Scroll up one	page.

       delete (delete-char) Delete character before the	dot.
       ctrl-d (delete-next-char) Delete	character after	the dot.
       meta-delete (delete-word) Delete	word before the	dot.
       meta-d (delete-next-word) Delete	word after the dot.

       ctrl-w (kill-region) Cut	selection to cut buffer.
       meta-w (copy-region) Copy selection to cut buffer.
       ctrl-y (yank) Copy the cut buffer in at the dot.
       ctrl-k (kill-line) Cut from dot to end of line into the cut buffer.
       ctrl-u (kill-input) Cut all text	typed so far into the cut buffer.

       UpArrow,	meta-= (backward-history) Move back one	line in	 command  his-
       tory buffer.
       DownArrow,  meta-` (forward-history) Move back one line in command his-
       tory buffer.

       meta-0...meta-9 (macro) Insert a	macro string at	the dot.  By  default,
       all  macros  are	undefined at startup, but you can change this with the
       bindings	option.
       meta-r (define-macro) The next macro key	hit will be  redefined	to  be
       the  selection. If there	is no selection, or if the next	key hit	is not
       a macro key, an error is	displayed.

       ctrl-l (redraw-all-windows) Redraw text and status windows.
       <none> (redraw-status) Redraw status window.
       <none> (redraw-screen) Redraw text window.
       meta-z (zoom-status) Expand status window to maximum  size  (only  when
       the autoresize option is	on.)
       meta-s  (shrink-status) Shrink status window to minimum size (only when
       the autoresize option is	on.)
       meta-c (clear-status) Clear any extra text below	the status line	in the
       status window.

       Enter, Return (enter) Accept the	text that has been typed.
       Escape  (escape)	 Set escape mode; next key hit will be taken as	a meta
       key.
       ctrl-g (cancel) Cancel escape mode, and anything	else that's going on.
       Help, ctrl-_ (explain-key) Explain the next key hit; this displays  the
       function	that the key is	bound to, and its argument, if any.
       All  normal  keys (insert-self) Insert whatever key is bound to this at
       the dot.
       <none> (no-op) Do nothing. Bind a key to	this to	disable	it.

Resources and Options
       All the behavior	of xzip	is controlled by X resources and  command-line
       options.	 Any  particular behavior can be set with either a resource or
       an option; options override resources.

       Command-line options go on the command line, looking like,
       xzip -option value gamefile
       Note that even binary options like "justify" must  be  given  a	value,
       "yes" or	"no".

       Resources are usually placed in your .Xdefaults or Xresources file, de-
       pending on your system setup. They have the format
       xzip.resourcename: value

       These are the resources and options that	you can	currently set. The de-
       fault values are	in italics.

       geometry: 500x600+100+100
	      The geometry of the text window, in the usual X geometry format.

       statgeometry: 80x24+100+50
	      The  geometry  of	the status window. Note	that the size is given
	      in characters, not in pixels, although the position is still  in
	      pixels.  This makes it something of a pain to position it	in the
	      right or bottom sides of the screen.

       foreground: black
	      The color	of the text and	other window decorations.

       background: white
	      The color	of the window background.

       greycolor: grey60
	      An intermediate color, used for the scroll  bar  on  color  dis-
	      plays.

       justify:	yes
	      If "yes",	full-justify the text in the text window.

       marginx:	4
	      Width  (in  pixels)  of  the margin between the left edge	of the
	      text and the scroll bar.

       leading:	3
	      Width (in	pixels)	of extra space to put between lines of text.

       autoresize: yes
	      If "yes",	the status window will automatically resize to be just
	      big  enough  for	the game's status line.	(But see "Quirks", be-
	      low.)

       resizeupward: no
	      If "no", the status window will resize downward;	the  top  edge
	      will  stay in place, and the bottom edge will move. If "yes", it
	      will resize upward. At the moment, this doesn't work  very  well
	      at all. (See "Known Bugs", below.)

       autoclear: yes
	      If  "yes",  extraneous text in the status	window will be cleared
	      after one	turn. (See "Quirks", below.)

       history:	20
	      The number of commands to	store in the command history.

       buffer: 4000
	      The amount of text (in characters) to  keep  in  the  scrollback
	      buffer.  If  this	is made	too large, the program can become very
	      slow.

       strictz:	1
	      The level	of reporting of	various	 subtle	 errors	 in  the  game
	      file.  0	means that all errors are silently ignored; 1 (the de-
	      fault) means that	each error is reported,	 but  only  the	 first
	      time  it	occurs;	2 means	that each error	is reported every time
	      it occurs; 3 means that the interpreter will shut	 down  immedi-
	      ately when an error occurs.

       spec: no
	      If  "yes",  the  interpreter will	declare	itself to be compliant
	      with the Z-machine Specification version	1.0.  This  is,	 basi-
	      cally,  a	lie, since I have not formally reviewed	the source for
	      Spec-1.0 compliance. However, xzip does support  every  Spec-1.0
	      feature  that  I	know  of, except for the color and Unicode op-
	      tions.

       inputstyle: b
	      The style	to display your	typed input in.	This can be n for nor-
	      mal  text, or r, b, rb, i, ri, bi, rbi, f, rf, bf, rbf, if, rif,
	      bif, rbif	to specify any combination of Reverse,	Bold,  Italic,
	      and Fixed. Note that the letters must be in the order shown; you
	      cannot use ib to specify italic and bold.

       X-color:	 (same as foreground)
	      X	may be any of n, r, b, rb, i, ri, bi, rbi, f, rf, bf, rbf, if,
	      rif,  bif, rbif.	This allows you	to specify the color of	any of
	      the sixteen fonts	used by	xzip.  For non-reversed	fonts, this is
	      the  color  of  the text;	for reversed fonts, it is the color of
	      the field	on which the text is displayed.	(The text of  reversed
	      fonts is always in the background	color.)

       X-font:
	      X	may be any of n, b, i, bi, f, bf, if, bif.  This allows	you to
	      specify the sixteen fonts	used by	xzip.  (Note that  you	cannot
	      set  the	reversed fonts;	they always use	the same font as their
	      non-reversed counterparts.)
	      The status window	always uses the	fixed-width  fonts;  the  text
	      window usually (but not always) uses proportional	fonts.

       bindings: (see above)
	      Key bindings to supplement or override the default bindings. The
	      resource should look like
	      key=function [, argument ]; key=function [, argument ] ...
	      where key	is the name of a key, preceded by  c-  to  indicate  a
	      control  key  and	m- to indicate a meta key.  function should be
	      one of the function names	listed	in  parentheses	 in  the  "Key
	      Bindings"	 section.   argument  (which  is optional) should be a
	      quoted string which will be passed to the	 function.  Currently,
	      only the macro function takes an argument.
	      So, for example,
	      xzip.bindings: c-x=kill-input; m-i=macro,"inventory"; m-d=no-op
	      would  mean  that	 ctrl-x	will delete all	input, and meta-i will
	      enter the	string "inventory", and	meta-d will  do	 nothing.  You
	      can have more than one key bound to a function, but you can only
	      have one function	bound to a key;	later bindings	will  override
	      earlier ones.

       Ok,  I  lied; there's one behavior which	is set by an environment vari-
       able. If	you set	INFOCOM_PATH to	a directory or colon-separated list of
       directories,  xzip  will	look there for a story file if it doesn't find
       it in the current directory.

Quirks
       As always, if you highlight colored text, the result may	be surprising.
       Highlighting  "normal" text will	be fine, and any other fonts which are
       the same	color, but other colors	may highlight  in  strange  ways,  and
       could  be hard to read. (This is	only a problem for text	which is high-
       lighted because it's selected. Text in a	reverse	font looks correct.)

       Certain games (notably Trinity and Curses!  ) display  pop-up  windows,
       by  using the status line in a slightly funky way. They expand the sta-
       tus line, display some text, and	then  immediately  shrink  the	status
       line again.
       I  have	done my	best to	support	this in	xzip 's	two-window system. The
       pop-up window will be visible from when it is created until  the	 first
       time  you  hit  Return.	Then the status	window will shrink again. This
       gives you one "turn" to read the	pop-up,	which  should  be  sufficient.
       (In  one-window,	 non-scrolling	interpreters,  the pop-up appears over
       your old	text, and scrolls away as you continue play.)
       If you turn off the autoclear option, pop-ups will not be  erased;  use
       meta-z  to  expand  the	status	window	and read them after the	window
       shrinks,	and meta-c to erase them manually. If you  do  not  erase  the
       pop-up, a later pop-up may partially overwrite it, which	looks ugly.
       If  you	turn  off  the	autoshrink  option, the	status window will not
       shrink, but the pop-up will still be erased (unless you have turned off
       autoclear as well.)

Known Bugs
       The  "resizeupward"  preference just plain doesn't work.	If you use it,
       the status window will slowly drift downwards as	it resizes.
       If a timed input	(such as Border	Zone uses) expires while you are edit-
       ing a line, the dot jumps to the	end of the line.
       If a style change occurs	in the middle of a word, xzip thinks it's okay
       to break	the word there (when wrapping lines.)
       Reverse text has	gaps in	it in full-justified lines. It also  has  gaps
       between lines, in the text window.
       The  keybindings	 are  ignored  while xzip is waiting for a single key-
       stroke (as opposed to a line of input.)	ctrl-l is hardwired  to	 work,
       but any other key will just be taken literally.
       Scrolling is slow and awful on X	servers	without	backing	store.
       Ignores meta modifier on	special	keyboard keys (Home, PageUp, etc)
       Parsing	of  keys in bindings could be cleverer.	It ought to understand
       /123 octal notation at least.
       Ought to	have separate font and color prefs for the status window.
       Sometimes makes you place a window by hand, even	though the geometry is
       specified.

Author
       X interface by Andrew Plotkin (erkyrath@eblong.com)
       The  Z-code  engine  is	taken  from  ZIP  V2.0.7  by Mark Howell (how-
       ell_ma@movies.enet.dec.com)
       For   more   information,   see	 the	web    page:	http://www.eb-
       long.com/zarf/xzip.html

       You are expressly forbidden to use this program on an Infocom game data
       file if,	in so doing, you violate the copyright	notice	supplied  with
       the original Infocom game.
       Parts  of  this program (the files xinit.c, xio.c, xkey.c, xmess.c, xs-
       tat.c, xtext.c) are copyrighted by Andrew Plotkin. These	files  may  be
       distributed, modified, and used freely, with the	exception noted	above.
       I  do  not  know	the exact copyright status of the rest,	except that it
       was written by Mark Howell and thus is probably copyrighted by him.  He
       released	 it  for  free,	so to the best of my knowledge,	it can also be
       distributed, modified, and used freely, with the	exception noted	above.

								       xzip(1)

Name | Syntax | Description | Mouse Commands | Key Commands | Resources and Options | Quirks | Known Bugs | Author

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