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# Line 5  Line 5 
5  @set VERSION 0.80  @set VERSION 0.80
6    
7  @copying  @copying
 This manual describes how to install and play Enigma.  It  
 corresponds to Enigma version @value{VERSION}.  
 @c @value{VERSION}.  
   
8  Copyright @copyright{} 2003 Daniel Heck  Copyright @copyright{} 2003 Daniel Heck
9    
10  Copying and distribution of this file, with or without modification,  Copying and distribution of this file, with or without modification,
# Line 38  notice and this notice are preserved. Line 34  notice and this notice are preserved.
34  @node Top, Introduction, (dir), (dir)  @node Top, Introduction, (dir), (dir)
35  @top Enigma  @top Enigma
36    
37  This manual describes how to install and play Enigma.  It  This manual describes how to install and play Enigma.  It corresponds
38  corresponds to Enigma version @value{VERSION}.  to Enigma version @value{VERSION}.
39    
40  Copyright @copyright{} 2003 Daniel Heck  Copyright @copyright{} 2003 Daniel Heck
41    
# Line 133  Credits Line 129  Credits
129  @node About, Installation, Introduction, Introduction  @node About, Installation, Introduction, Introduction
130  @section About Enigma  @section About Enigma
131    
132  Enigma started out in an attempt to revive the game idea behind the  Enigma is a tribute to and a re-implementation of Oxyd, one of the
133  Oxyd games published by Dongleware.  The series consisted of four  most original and intriguing computer games of the 1990's.  Oxyd first
134  games: Oxyd 1, Per.Oxyd, Oxyd magnum, and Oxyd extra.  Oxyd 1 and  appeared on the Atari ST, but was later ported to many other platforms
135  Per.Oxyd were quite successful back when Ataris were cool, and later  and extended into a series of four games: Oxyd 1, Per.Oxyd, Oxyd
136  the PC and MAC conversions garnered a loyal (if small) fan community.  magnum, and Oxyd extra.  In 2002 Dongleware, the publisher of Oxyd,
137  Sadly, calling for modest amounts of intelligence @emph{and} dexterity,  finally decided to leave the gaming business and to abandon Oxyd.
 the games never appealed to the masses, and in 2002 Dongleware left  
 the gaming business and finally abandoned Oxyd.  
138    
139  Enigma is a clone of Oxyd---with a few unique twists, but altogether  Enigma is a clone of Oxyd---with a few unique twists, but altogether
140  very true to the original.  Former Oxyd addicts will hopefully feel at  very true to the original.  But even if you have never played Oxyd,
141  home in no time.  But even if you've never played Oxyd, there's a good  there's a good chance that you will like Enigma, provided you like
142  chance that you will like Enigma.  If Enigma is completely new to you,  puzzle games and have a steady hand.
 be sure to read the @ref{Rules of the Game}.  
143    
144  There is an official @uref{http://www.nongnu.org/enigma, homepage} for  There is an official @uref{http://www.nongnu.org/enigma, homepage} for
145  Enigma that contains screenshots, downloads, latest news, and the most  Enigma that contains screenshots, downloads, latest news, and the most
# Line 167  into this game. Line 160  into this game.
160    
161  The latest version of Enigma can be downloaded from Enigma's  The latest version of Enigma can be downloaded from Enigma's
162  @uref{http://www.nongnu.org/enigma/download.html, Download  @uref{http://www.nongnu.org/enigma/download.html, Download
163  Page}. This page contains packages for several different operating  Page}. This page contains packages for the following operating
164  systems:  systems:
165    
166  @table @strong  @table @strong
167  @item Windows  @item Windows
168  The Windows version of Enigma is distributed as a self-installing  The Windows version of Enigma is distributed as a self-installing
169  executable.  Simply run the downloaded @file{.exe} file; it should  executable.  Simply download and run the provided @file{.exe} file.
 have a file name like @file{Enigma-0.80.exe}.  
170    
171  @item Unix  @item Unix
172  Binary packages exist for some popular Linux distributions like SuSE,  Binary packages exist for some popular Linux distributions like SuSE,
# Line 189  No installation is necessary for the OS Line 181  No installation is necessary for the OS
181    
182  The download page usually contains more detailed and up-to-date  The download page usually contains more detailed and up-to-date
183  information. If you cannot get Enigma to work on your computer, feel  information. If you cannot get Enigma to work on your computer, feel
184  free to ask for help on the Enigma development mailing list  free to ask for help on the Enigma mailing list
185  @email{enigma-devel@@nongnu.org}.  (@email{enigma-devel@@nongnu.org}).
186    
187  @node Emulating Oxyd, Distributing Enigma, Installation, Introduction  @node Emulating Oxyd, Distributing Enigma, Installation, Introduction
188  @section Emulating Oxyd  @section Emulating Oxyd
189    
190  @strong{Note:} This section describes an experimental feature of  @strong{Note:} This section describes an experimental feature of
191  Enigma.  Oxyd emulation is probably only of interest to former fans of  Enigma.  Oxyd emulation is probably only of interest to former fans of
192  Oxyd---everyone else can safely skip this section.  Oxyd and to those who do not like the sound effects that come with
193    Enigma---everyone else can safely skip this section.
194    
195  As mentioned in the introduction, Enigma started out as a clone of  As mentioned in the introduction, Enigma started out as a clone of
196  Oyxd.  By now Enigma is finally capable of emulating much of Oxyd's  Oyxd.  By now, Enigma is finally capable of emulating much of Oxyd's
197  core functionality.  The gaming experience unfortunately isn't yet  core functionality, although the gaming experience isn't perfect yet.
198  perfect: Enigma still lacks some of Oxyd's game objects, and features  Enigma still lacks some of Oxyd's game objects, and features like
199  like network support are utterly missing.  Importing Oxyd's sound  network support are utterly missing.  What @emph{does} work, however,
200  effects @emph{does} work however, as does importing some of the  is importing Oxyd's sound effects and playing some of the original
201  original levels.  levels.
   
 Enigma will automatically import all Oxyd data files it can find.  All  
 you have to do is copy at least one of the following files to Enigma's  
 data directory:  
   
 @multitable {Oxyd magnum gold} {@file{peroxyd.dat}}  
 @item @strong{Game} @tab @strong{Data file}  
 @item Per.Oxyd @tab @file{peroxyd.dat}  
 @item Oxyd 1 @tab @file{oxyd1ibm.dat}  
 @item Oxyd extra @tab @file{oxydex.dat}  
 @item Oxyd magnum @tab @file{oxydmibm.dat}  
 @item Oxyd magnum gold @tab @file{oxydmgg.dat}  
 @end multitable  
202    
203  Now, where is Enigma's data directory? That depends:  Enigma will automatically import every Oxyd data file it can find.
204    By default it searches for data files in the following places:
205    
206  @table @strong  @table @strong
207  @item Windows  @item Windows
# Line 229  location of which you can specify in the Line 210  location of which you can specify in the
210  This is usually something like @file{C:\Program Files\Enigma\data}.  This is usually something like @file{C:\Program Files\Enigma\data}.
211    
212  @item Unix / OS X  @item Unix / OS X
213  There are two alternatives: If you are root, you can copy the  There are two possible data directories on Unix-like systems: firstly
214  @file{.dat} file to @file{/usr/local/share/enigma} or  the system-wide directory (something like
215  @file{/usr/share/games/enigma}, or wherever Enigma's data files were  @file{/usr/local/share/enigma} or @file{/usr/share/games/enigma},
216  installed.  Alternatively you can create a directory called  depending on your configuration), and secondly a per-user directory
217  @file{.enigma} in your home directory and put Oxyd's files there.  called @file{.enigma} in your home directory.
   
218  @end table  @end table
219    
220    All you have to do is copy copy one/any/all of the following files to
221    Enigma's data directory:
222    
223    @multitable {Oxyd magnum gold} {@file{peroxyd.dat}}
224    @item @strong{Game} @tab @strong{Data file}
225    @item Per.Oxyd @tab @file{peroxyd.dat}
226    @item Oxyd 1 @tab @file{oxyd1ibm.dat}
227    @item Oxyd extra @tab @file{oxydex.dat}
228    @item Oxyd magnum @tab @file{oxydmibm.dat}
229    @item Oxyd magnum gold @tab @file{oxydmgg.dat}
230    @end multitable
231    
232  Per.Oxyd and Oxyd 1 are dongleware (i.e., some kind of shareware) and  Per.Oxyd and Oxyd 1 are dongleware (i.e., some kind of shareware) and
233  can download them freely from the Internet (search for ``oxyd  can download them freely from the Internet (search for ``oxyd
234  abandonware''; Google is your friend).  Oxyd extra and magnum were  abandonware''; Google is your friend).  Oxyd extra and Oxyd magnum
235  regular commercial games, so you may only use them if you have a legal  were regular commercial games, so you may only use them if you have a
236  copy.  Please do not ask us to send you copies of any Oxyd version, we  legal copy.  Please do not ask us to send you copies of any Oxyd
237  won't.  Oxyd may have been abandoned, but it's still copyrighted, and  version---we won't.  Oxyd may have been abandoned, but it's still
238  we respect that.  copyrighted, and we respect that.
239    
240  @node Distributing Enigma,  , Emulating Oxyd, Introduction  @node Distributing Enigma,  , Emulating Oxyd, Introduction
241  @section Distributing Enigma  @section Distributing Enigma
# Line 255  Enigma release (either in file @file{COP Line 247  Enigma release (either in file @file{COP
247  don't really need to read all that legalese (you probably wouldn't  don't really need to read all that legalese (you probably wouldn't
248  anyway).  For you, the license basically says: Play Enigma as much as  anyway).  For you, the license basically says: Play Enigma as much as
249  you want, as long as you want, and be sure to give it to all your  you want, as long as you want, and be sure to give it to all your
250  friends.  Simple as that.  friends.
251    
252  If you want to modify Enigma or contribute to its further development,  If you want to modify Enigma or contribute to its further development,
253  please @emph{do} read the license, if only this one time in your life.  please @emph{do} read the license, if only this one time in your life.
# Line 301  which looks something like this: Line 293  which looks something like this:
293    
294  @image{images/levelmenu}  @image{images/levelmenu}
295    
296  The screen consists roughly of three areas: on the top you see a few  The screen consists of three areas: the top area shows a few facts
297  facts about the currently selected level and the total number of  about the currently selected level and the current level pack, the
298  levels, the middle area contains an overview of the available levels  middle area contains an overview of the available levels and at the
299  and at the bottom is a row of buttons.  bottom is a row of buttons.
300    
301  You can move around the list of levels using either the small arrow  You can move around the list of levels using either the small buttons
302  buttons to the right or using the arrows keys.  To start a new game,  to the right or using the arrows keys.  To start a new game, simply
303  simply click on the preview image of the landscape you want to play or  click on the preview image of the landscape you want to play or press
304  press @key{RET}.  @key{RET}.
305    
306  The level menu marks the levels that you already solved with a small  The level menu labels the levels that you already solved with a small
307  medal in the upper left corner of the preview image (a silver medal if  medal in the upper left corner of the preview image (a silver medal if
308  you solved it in easy mode, a gold medal otherwise).  You can jump to  you solved it in easy mode, a gold medal otherwise).  You can jump to
309  the next unsolved level either by pressing @key{F5} or by pressing the  the next unsolved level either by pressing @key{F5} or by pushing the
310  button with the two medals in the bottom row.  button with the two medals in the bottom row.
311    
312  You can navigate the level menu with the following keys:  You can navigate the level menu with the following keys:
# Line 335  Change selected level Line 327  Change selected level
327  @item @key{RET}  @item @key{RET}
328  Play selected level  Play selected level
329    
330  @item Space  @item @key{Space}
331  Move to next level pack  Move to next level pack
332    
333  @item Backspace  @item @key{Backspace}
334  Move to previous level pack  Move to previous level pack
335    
336  @end table  @end table
# Line 346  Move to previous level pack Line 338  Move to previous level pack
338  At first, only 10 levels in every level pack are available for  At first, only 10 levels in every level pack are available for
339  playing.  The other levels are ``locked'', as indicated by the lock  playing.  The other levels are ``locked'', as indicated by the lock
340  symbol in the preview image.  The unlocked levels can be played in any  symbol in the preview image.  The unlocked levels can be played in any
341  order, and for every completed level, a new level will be unlocked.  order, and for every completed level, a new level will become
342    unlocked.
343    
344  Enigma comes with many levels.  Many, many levels, in fact.  To keeps  Enigma comes with many levels.  Many, many levels, in fact.  To keeps
345  things orderly, they have been distributed over five ``level packs'':  things orderly, they have been distributed over five ``level packs'':
# Line 354  things orderly, they have been distribut Line 347  things orderly, they have been distribut
347  @itemize @bullet  @itemize @bullet
348  @item Enigma  @item Enigma
349  @item Enigma 2  @item Enigma 2
350  @item Oxyd  @item Oxyds
351  @item Esprit  @item Esprit
352  @item Sokoban  @item Sokoban
353  @end itemize  @end itemize
# Line 373  menu.  @emph{Note}: This option currentl Line 366  menu.  @emph{Note}: This option currentl
366  Windows; you have to restart Enigma to activate your changes.  Windows; you have to restart Enigma to activate your changes.
367    
368  @item Mouse speed  @item Mouse speed
369  Determines how quickly your marble accelerated when you move the mouse.  Determines how quickly your marble accelerates when you move the
370  Use the left and right arrow keys to change the mouse speed during the  mouse.  To change the mouse speed during the game, use the left and
371  game.  right arrow keys.
372    
373  @item Play all levels / Skip Solved Levels  @item Play all levels / Skip Solved Levels
374  If this option is active, Enigma will skip levels that have already  If this option is active, Enigma automatically skips levels that have
375  been solved.  already been solved.
376    
377  @item Difficulty  @item Difficulty
378  There are two difficulty settings: easy and hard.  .  There are two difficulty settings: easy and normal.
379    
380  @item Video 640x480 / 640x512  @item Video 640x480 / 640x512
381  This button lets you change the video mode used by Enigma.  640x480  This button lets you change the video mode used by Enigma.  640x480
# Line 395  The sound volume Line 388  The sound volume
388    
389  @item Default sound / Enigma Sound / etc.  @item Default sound / Enigma Sound / etc.
390  This button lets you choose the set of sound effects Enigma uses  This button lets you choose the set of sound effects Enigma uses
391  during the game.  This button is only relevant if you use Enigma with  during the game.  It is only relevant if you use Enigma with the
392  the original Oxyd data files.  original Oxyd data files.
393    
394  @item Music vol  @item Music vol
395  The music volume  The music volume
# Line 422  Toggle between stereo, reversed stereo, Line 415  Toggle between stereo, reversed stereo,
415  @node Normal landscapes, Two-player landscapes, Rules of the Game, Rules of the Game  @node Normal landscapes, Two-player landscapes, Rules of the Game, Rules of the Game
416  @subsection Normal landscapes  @subsection Normal landscapes
417    
418  The basic idea behind Enigma is simple: In most levels, your objective  The basic idea behind Enigma is simple: In most levels you control a
419  is to find and uncover matching pairs of so-called @emph{Oxyd  small black marble and have to find and ``open'' matching pairs of
420  stones}. Oxyd stones exist in four different disguises, but in fact  so-called @emph{Oxyd stones}.  Closed Oxyd stones look like this
421  they all behave identically:  (there are four different variants, but they all behave the same):
422    
423  @image{images/st-oxyds}  @image{images/st-oxyds}
424    
425  Oxyd stones always come in pairs: There are two stones with the same  When you touch an Oxyd stone with your marble, it opens and reveals a
426  color in every landscape.  When you touch an Oxyd stone with your  color symbol.  There are two Oxyd stones with the same color in every
427  marble, it opens and reveals its color.  Only if the next Oxyd  landscape.  You must touch two matching stones in succession to open
428  stone you open has the same color, both stones will remain open.  them permanently---if the colors don't match the first Oxyd stone
429  If the colors don't match the first Oxyd stone  closes again.  To finish a landscape you have to find and open all
430  closes again.  To finish a landscape you  pairs of Oxyd stones.  In the following image you see a pair of green
431  have to find and open all pairs of Oxyd stones.  In the  Oxyd stones that is already open. The question mark inside the blue
432  following image you see a pair of green Oxyd stones that is already  Oxyd stone indicated that the second blue symbol is still hidden
433  open. The question mark inside on the other Oxyd stone  somewhere.
 indicated that the second blue stone has still to be opened.  
434    
435  @image{images/intro-oxyd}  @image{images/intro-oxyd}
436    
437  @emph{By the way: if you have not already done so, now is a good time to  @emph{By the way: if you have not already done so, now is a good time to
438  start Enigma and play the first couple of levels!}  start Enigma and play the first couple of levels!}
439    
440  You can pick up objects on the floor by moving over them.  The items  You can pick up objects on the floor by moving over them.  The
441  in your possession show up in the inventory at the bottom of the  inventory at the bottom of the screen displays the list of items in
442  screen.  At the beginning of a new game, you will be equipped with  your possession .  At the beginning of a new game, you will be
443  nothing but two spare marbles.  The following picture shows an  equipped with nothing but two spare marbles.  The following picture
444  inventory containing a shovel, a piece of paper, two bars of dynamite,  shows an inventory containing a shovel, a piece of paper, two bars of
445  your extra lifes, and an umbrella:  dynamite, your extra lifes, and an umbrella:
446    
447  @image{images/intro-inventory}  @image{images/intro-inventory}
448    
# Line 467  situations. Line 459  situations.
459    
460  Many stones can be moved if you push them hard enough.  One of the  Many stones can be moved if you push them hard enough.  One of the
461  most useful movable stones is the wooden stone, which can be used to  most useful movable stones is the wooden stone, which can be used to
462  build bridges across water and abyss.  The next chapter covers many  build bridges across water and abyss.  This image shows how to build a
463  more stones that can be pushed around.  This image shows how to build  bridge by dumping wooden stones into the water:
 a makeshift bridge by dumping wooden stones into the water:  
464    
465  @image{images/intro-plank}  @image{images/intro-plank}
466    
# Line 477  Many game objects interact with other ob Line 468  Many game objects interact with other ob
468  Objects lying on the floor, for example, can be transformed using  Objects lying on the floor, for example, can be transformed using
469  laser beams and movable stones.  And many stones behave differently if  laser beams and movable stones.  And many stones behave differently if
470  you hit them with a particular object at the front of your inventory  you hit them with a particular object at the front of your inventory
471  (the magic wand being the best-known object in that category).  (the magic wand being the best-known object in this category).
472    
473  Last but not least: Don't feel discouraged by the apparent complexity  Last but not least: Don't feel discouraged by the apparent complexity
474  of the game--the behaviour of most object will become clear in due  of the game---the behaviour of most object will become clear in due
475  course.  Some of the obscurer objects are explained in @ref{Game  course.  Some of the obscurer objects are explained in @ref{Game Objects}.
 Objects}.  
476    
477  @node Two-player landscapes, Meditation landscapes, Normal landscapes, Rules of the Game  @node Two-player landscapes, Meditation landscapes, Normal landscapes, Rules of the Game
478  @subsection Two-player landscapes  @subsection Two-player landscapes
479    
480  First some bad news: Enigma does not yet have support for network  Some bad news first: Enigma does not yet support Internet or network
481  games.  In this respect, the two-player landscapes are really  games.  In this respect, the two-player landscapes are really
482  single-player landscapes where you can switch between two marbles: the  single-player landscapes where you can switch between two marbles: the
483  black one you're already used to, and an additional white marble:  black one you're already used to, and an additional white marble:
484    
485  @image{images/intro-twoplayer}  @image{images/intro-twoplayer}
486    
487  You can tell that you're playing a two-player level by the little  You can tell that you're on a two-player level by the little Yin-Yang
488  Yin-Yang symbol in your inventory.  Activating this object switches  symbol in your inventory.  Activating this object switches from the
489  from the black to the white marble and vice versa.  black to the white marble and vice versa.
490    
491  @node Meditation landscapes,  , Two-player landscapes, Rules of the Game  @node Meditation landscapes,  , Two-player landscapes, Rules of the Game
492  @subsection Meditation landscapes  @subsection Meditation landscapes
# Line 509  as every marble @emph{rests} in its own Line 499  as every marble @emph{rests} in its own
499  @image{images/intro-meditation}  @image{images/intro-meditation}
500    
501  Be careful though: All marbles move together and a sudden mouse  Be careful though: All marbles move together and a sudden mouse
502  movement can easily push some of them out of their pits or even into  movement can easily push some of them out of their pits.  Meditation
503  the abyss.  Meditation landscapes usually require a very steady hand  landscapes usually require a very steady hand and a lot of patience
504  and a lot of patience (which is, incidentally, why they are called  (which is, incidentally, why they are called meditation landscapes!).
 meditation landscapes!).  
505    
506  @node Controls,  , Rules of the Game, The Game  @node Controls,  , Rules of the Game, The Game
507  @section Controls  @section Controls
# Line 588  Return to the level menu immediately Line 577  Return to the level menu immediately
577  @image{images/it-explosives}  @image{images/it-explosives}
578    
579  There are three types of explosives you can come across in Enigma.  There are three types of explosives you can come across in Enigma.
580  The first, and most harmless, is the stick of dynamite.  It doesn't do  The most harmless is the stick of dynamite.  It doesn't do much damage
581  much damage to floor tiles or neighboring stones when it explodes, but  to floor tiles or neighboring stones when it explodes, but it is
582  it is useful for destroying brittle stones and for igniting nearby  useful for destroying brittle stones and for igniting nearby bombs.
 bombs.  
583        
584  Black bombs are powerful enough to destroy most floor tiles and some  Black bombs are powerful enough to destroy most floor tiles and some
585  otherwise indestructible stones.  For most purposes, they are the  otherwise indestructible stones.  For most purposes, they are the
# Line 604  black bombs--get away quickly if you see Line 592  black bombs--get away quickly if you see
592  @image{images/it-umbrella}  @image{images/it-umbrella}
593    
594  Use umbrellas to make your marble invulnerable for a short amount of  Use umbrellas to make your marble invulnerable for a short amount of
595  time (ten seconds to be exact).  If you activate an umbrella, a white  time (ten seconds to be exact).  When you activate an umbrella, a white
596  halo will appear around your marble that will stay as long as the  halo will appear around your marble that will stay as long as the
597  protection lasts.  If the halo starts to blink, you have three seconds  protection lasts.  If the halo starts to blink, you have three seconds
598  to move your marble to a safe place.  to move your marble to a safe place.
# Line 615  to move your marble to a safe place. Line 603  to move your marble to a safe place.
603  @image{images/it-flags}  @image{images/it-flags}
604    
605  Flags are primarily useful on long and dangerous journeys.  If your  Flags are primarily useful on long and dangerous journeys.  If your
606  marble is destroyed, the new marble will appear where the flag has  marble is destroyed, the new marble will appear where the flag
607  been placed.  There are two types of flags: a black one and a white  currently is, and not at the beginning of the level.  There are two
608  one, which define the starting point of the black and the white marble  types of flags: a black one and a white one, which set the starting
609  respectively.  point of the black and the white marble respectively.
610    
611  @c @node Teleporters, Elastic Band, Flags, Items  @c @node Teleporters, Elastic Band, Flags, Items
612  @c @subsection Teleporters  @c @subsection Teleporters
# Line 645  respectively. Line 633  respectively.
633    
634  @image{images/st-lethal}  @image{images/st-lethal}
635    
636  There are two kinds of stones that you should usually avoid at all  There are two kinds of stones that you should avoid at all costs, at
637  costs.  At least if you do not have an umbrella to protect your  least if you do not have an umbrella to protect your precious marble.
 precious marble.    
638    
639  The @emph{skull stone} is as unhealthy as it looks; touch it and  The @emph{skull stone} is as unhealthy as it looks; touch it and
640  perish.  Really.  You have been warned.  There's an even more cunning  perish.  Really, you have been warned.  There's an even more cunning
641  variant that is invisible; wearing glasses helps.  variant that is invisible; don't forget your magic glasses.
642    
643  The @emph{black knight} often guards important passageways, and he's  The @emph{black knight} often guards important passageways, and he's
644  generally @emph{not} in the mood to let you pass.  Bring a good  generally @emph{not} in the mood to let you pass.  Bring a good
# Line 662  argument to ``convince'' him. Line 649  argument to ``convince'' him.
649    
650  @image{images/st-swap}  @image{images/st-swap}
651    
652  Although they look much like ordinary stones, swap stones do not  Swap stones do not simply move to an adjacent (empty) field when being
653  simply move to an adjacent (empty) field when being pushed; instead,  pushed; instead, they change places with the stone they are being
654  they change places with stones they are being pushed into.  The only  pushed into.  The only way to move a swap stone from one place to
655  way to move a swap stone from one place to another is consequently to  another is consequently to repeatedly interchange it with other
656  repeatedly interchange it with other stones.  ``real'' stones.
657    
658  @c @node Lasers, Mirrors, Swap Stones, Stones  @c @node Lasers, Mirrors, Swap Stones, Stones
659  @c @subsection Lasers  @c @subsection Lasers
# Line 680  repeatedly interchange it with other sto Line 667  repeatedly interchange it with other sto
667    
668  Laser beams can be deflected with the help of @emph{mirror stones}.  Laser beams can be deflected with the help of @emph{mirror stones}.
669  There are two types of mirrors in Enigma: plane mirrors and triangular  There are two types of mirrors in Enigma: plane mirrors and triangular
670  mirrors. A plane mirror behaves like an ordinary mirror: An incoming  mirrors.  A plane mirror behaves like an ordinary mirror: An incoming
671  laser beam is either reflected, if it is perpendicular to the mirror,  laser beam is reflected if it is perpendicular to the mirror and
672  or deflected to the left or to the right if it hits the mirror at an  deflected to the left or right if it hits the mirror at an angle of 45
673  angle of 45 degrees.  degrees.
674    
675  Triangular mirrors are a little more difficult to handle: The three  Triangular mirrors are a little more tricky: The three faces behave
676  faces behave like regular mirrors, either reflecting or deflecting an  like regular mirrors, either reflecting or deflecting an incident
677  incident beam.  But a beam that falls on the tip of the triangle gets  beam.  But a beam that falls on the tip of the triangle gets split
678  split into two outgoing beams that travel in opposite directions.  into @emph{two} outgoing beams that travel in opposite directions.
679    
680  Both types of mirrors can be additionally be semitransparent or  Both types of mirrors can be additionally be semitransparent or
681  movable.  Semitransparent mirrors deflect part of the incoming beam  movable.  Semitransparent mirrors deflect part of the incoming beam
682  just like their opaque siblings do, but part of the beam continues  just like their opaque siblings do, but part of the beam continues
683  undeflected.  Movable mirrors are mounted on a light gray stone,  unchanged.  Movable mirrors are mounted on a light gray stone,
684  immovable mirrors on a dark gray stone.  immovable mirrors on a dark gray stone.
685    
686  You can turn mirrors by touching them lightly with your marble.  Be  You can turn mirrors by touching them lightly with your marble.  Be
687  careful when turning a mirror that is already inside a laser beam,  careful when turning a mirror that is already inside a laser beam,
688  though, lest your marble end up in shards...  though, or your marble may end up in shards...
689    
690  @node Magic Stones, Shogun Stones, Mirrors, Stones  @node Magic Stones, Shogun Stones, Mirrors, Stones
691  @subsection Magic Stones  @subsection Magic Stones
# Line 706  though, lest your marble end up in shard Line 693  though, lest your marble end up in shard
693  @image{images/st-magic}  @image{images/st-magic}
694    
695  Magic stones are a relic from the old Oxyd games, where they were used  Magic stones are a relic from the old Oxyd games, where they were used
696  as a copy protected scheme.  Since they do not serve a real purpose in  as a copy protection scheme.  Since they do not serve a real purpose in
697  Enigma, you will encounter them only if you use Enigma to play levels  Enigma, you will encounter them only if you use Enigma to play levels
698  from Oxyd.  Simply touch them with your marble to get rid of them.  from Oxyd.  Simply touch them with your marble to get rid of them.
699    
# Line 718  They can be activated with the right com Line 705  They can be activated with the right com
705  stones}, whereupon they usually do something useful like opening doors  stones}, whereupon they usually do something useful like opening doors
706  or creating bridges.  or creating bridges.
707    
708  A small blinking dot is activated simply by moving a shogun stone with  A small blinking dot is activated by moving a shogun stone with a
709  a small hole on top of it.  To activate the bigger dots a single  small hole on top of it.  To activate the bigger dots a single shogun
710  shogun stone does not suffice. Instead, you have to properly stack two  stone is not enough.  Instead, you have to properly stack two or three
711  or three shogun stones by pushing stones with small holes into stones  shogun stones by pushing stones with small holes into stones with
712  with larger holes.  If you want to activate a medium sized dot, for  larger holes.  If you want to activate a medium sized dot, for
713  example, you have to first place a shogun stone with a medium sized  example, you have to first place a shogun stone with a medium sized
714  hole on it and then push a small-holed stone into the bigger one.  hole on it and then push a small-holed stone into the bigger one.
715    
# Line 732  hole on it and then push a small-holed s Line 719  hole on it and then push a small-holed s
719  Electric stones can be used to put an electric charge on one of your  Electric stones can be used to put an electric charge on one of your
720  marbles or any other movable object.  Objects can carry either a  marbles or any other movable object.  Objects can carry either a
721  positive or a negative charge (or no charge at all, which is the  positive or a negative charge (or no charge at all, which is the
722  default).  Electrically charged objects behave just like regular  default).  Electrically charged objects behave like regular objects if
723  objects if they are far apart.  But if they are close together they  they are far apart.  If they are close together, however, they either
724  either repel or attract each other, depending on whether they carry  repel or attract each other, depending on whether they carry like or
725  like or unlike charges.  unlike charges.
726    
727  @node Puzzle Stones, Mail Stones, Electric Stones, Stones  @node Puzzle Stones, Mail Stones, Electric Stones, Stones
728  @subsection Puzzle Stones  @subsection Puzzle Stones
729    
730  Puzzle stones derive their name from the fact that individual stones  Puzzle stones derive their name from the fact that individual stones
731  can be put together like the pieces of a puzzle.  Puzzle stones have  can be put together like the pieces of a puzzle.  Puzzle stones have
732  sockets on some or all of their four sides which can attach to  sockets on some or all of their four sides which can attach to sockets
733  adjacent sockets.  Once linked up, groups of puzzle stones move as a  on adjacent stones.  Once linked up, groups of puzzle stones move as a
734  unit.  You can use these blocks, for example, to build bridges across  unit.  You can use these blocks, for example, to build bridges across
735  abyss or water.  abyss or water.
736    
737  When hit with a magic wand, puzzle stones behave differently.  If the  When hit with a magic wand, puzzle stones behave differently.  If the
738  block of puzzle stones is fully connected (i.e., it has no open  block of puzzle stones is fully connected (i.e., it has no open
739  sockets), the block will immediately start to explode, stone by stone.  sockets), the block immediately starts to explode, stone by stone.  If
740  If the block was not fully connected, the stones in the row or column  the block is not fully connected, the stones in the row or column that
741  that was hit get shifted by one place either horizontally or  was hit get shifted by one place either horizontally or vertically.
 vertically.  
742        
743  There's a rare variant of the common puzzle stone that behaves a  There's a rare variant of the common puzzle stone that behaves a
744  little differently.  The main habitat of this stone is said to be the  little differently.  The main habitat of this are the levels of Oxyd
745  levels of Oxyd 1, and it's recognizable by the color of its pipes,  1, and it's recognizable by the color of its pipes, which is orange
746  which is orange instead of the usual blue.  These puzzle stones cannot  instead of the usual blue.  These puzzle stones cannot be moved as a
747  be moved as a unit; instead, they behave like the blue puzzle stones  unit. They behave like the blue puzzle stones do when you hit them
748  do when you hit them with a wand: the block either explodes, if it's  with a wand: the block either explodes, if it's fully connected, or
749  fully connected, or the touched row or column of the block gets  the touched row or column of the block gets shuffled.  
 shuffled.  Because they cannot be moved, they will likely block your  
 way until you have succeeded in connecting all the stones in the  
 group.  
750    
751  @node Mail Stones,  , Puzzle Stones, Stones  @node Mail Stones,  , Puzzle Stones, Stones
752  @subsection Mail Stones  @subsection Mail Stones
# Line 771  group. Line 754  group.
754  @image{images/st-mail}  @image{images/st-mail}
755    
756  Mail stones can be used to send items from your inventory to some  Mail stones can be used to send items from your inventory to some
757  inaccessible place in the landscape.  If you roll against a mail  inaccessible place in the landscape.  When you roll against a mail
758  stone, the first object in your inventory gets removed and put at the  stone, the first object in your inventory gets removed and put at the
759  end of the pipeline attached to the mail stone.  In most cases you  end of the pipeline attached to the mail stone.  In most cases you
760  will have to build this pipeline yourself, for example by ``mailing''  will have to build this pipeline yourself, for example by ``mailing''
# Line 806  easier to solve in easy game mode (@pxre Line 789  easier to solve in easy game mode (@pxre
789  * Enigma::                      Hints for level pack Enigma  * Enigma::                      Hints for level pack Enigma
790  @end menu  @end menu
791    
792  @node Enigma,  , Spoilers, Spoilers  @node Enigma Spoilers,  , Spoilers, Spoilers
793  @section Enigma  @section Enigma Spoilers
794    
795  @table @strong  @table @strong
796    
# Line 946  Menu music (@emph{Pentagonal Dreams}) Line 929  Menu music (@emph{Pentagonal Dreams})
929  Level design and special Oxyd expertise  Level design and special Oxyd expertise
930    
931  @item David W. Skinner  @item David W. Skinner
932  Many Sokoban levels  Many Sokoban levels from
933  @uref{http://users.bentonrea.com/~sasquatch/sokoban, Sokoban page}  @uref{http://users.bentonrea.com/~sasquatch/sokoban}
934    
935    
936  @end table  @end table
# Line 956  Many Sokoban levels Line 939  Many Sokoban levels
939  @section Contributors  @section Contributors
940  For various smaller contributions, thanks go to:  For various smaller contributions, thanks go to:
941    
   
942  @itemize @bullet  @itemize @bullet
943  @item  @item
944  Armin Bernemann (Mandrake packages)  Armin Bernemann (Mandrake packages)

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