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https://github.com/cmatsuoka/sarien

A Sierra AGI resource interpreter engine
https://github.com/cmatsuoka/sarien

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A Sierra AGI resource interpreter engine

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README

        

Sarien Sierra Adventure Game Interpreter
Version 0.8

What Is Sarien?
===============
Sarien is a Sierra AGI resource interpreter engine that enables you to
play early Sierra On-Line(tm) AGI version 2 and version 3 games, as well
as AGI games written by other people.

It is being written to be very portable. See doc/README.ports for a
list of current supported platforms.

Sarien is covered by the Free Software Foundation's GNU Public License
and is an open source development. Up to date information, bug tracker
and daily development snapshots are available at http://sarien.sf.net/.

Command Line Switches
=====================
Syntax is: sarien [switches] [gamedir]

Where [switches] are optionally:
-a --agds Enables sarien to play AGDS created games.
-A --amiga Forces the game to be seen as an Amiga word padded game.
-C --crc CRC and identify the game files and stop.
-c --cga-palette Use PC CGA video mode emulation.
-d --list-dictionary
List dictionary words.
-e --ega-palette Use PC EGA palette instead of amiga-ish palette
-L --list-games List all the games in the ID file
-F --full-screen Run in full-screen mode if allowed by the graphics device
-g --no-gfx-optimizations
Disable optimized graphic driver hacks (if available).
-H --hires {0|1} Enable/disable hi-res mode.
-h --help Display this help screen.
-m --agimouse AGI Mouse 1.0 compatibility mode.
-n --no-sound Disable sound output.
-p --picture-viewer
Interactive picture viewer.
-o --list-objects List objects.
-S --scale {num} Window size scale (only for windowed graphics).
-s --emulate-sound {type}
Emulate the sound of Sierra AGI running in different
computers. Valid emulations are pc, mac and amiga
-r --aspect-ratio {0|1}
Adjust aspect ratio to match the PC EGA 320x200 screen.
-v --emulate-version {version}
Force version to emulate. Valid v2 game versions are:
2.089, 2.272, 2.440, 2.917, 2.936. Valid v3 games are:
3.002.086, 3.002.149.
-V --version Display version information.
-x --no-x-shm Disable X shared memory extension (if available).

[gamedir] is optionally the directory the game is in, if no directory is
specified, the current directory is assumed.

Playing Games
=============
In order to play games, you will need,

1) A Game or Demo
2) A binary of Sarien.

For a AGI V2 games you only need the following files

logdir
object
picdir
snddir
viewdir
vol.*
words.tok

For an AGI V3 game you need;

*dir (eg: bcdir, dmdir, grdir, kq4dir, mhdir)
*vol.* (eg: bcvol.*, dmvol.*, etc)
object
words.tok

Version Emulation
=================
Sierra Games currently ID'd:

IBM-PC versions
Black Cauldron (2.00) 2.439 6/14/87
Kings Quest 1 (2.0F) 2.917
Kings Quest 2 2.411
Kings Quest 2 (2.2) 2.917
Kings Quest 3 (1.01) 2.272 11/08/86
Kings Quest 3 (2.00) 2.435 5/25/87
Kings Quest 3 (2.14) 2.936 3/15/88
Kings Quest 3 (2.14) 2.936 3/15/88
Larry 1 (1.00) 2.440 6/1/87
Mixed Up Mother Goose 2.915
Police Quest 1 (2.0A) 2.911 10/23/87
Police Quest 1 (2.0G) 2.917 12/03/87
Police Quest 1 (2.0G) 2.917 12/03/87
Space Quest 1 (1.0X) 2.089
Space Quest 1 (1.1A) 2.272
Space Quest 1 (2.2) 2.426
Space Quest 2 2.912
Space Quest 2 (2.0A) 2.912
Space Quest 2 (2.0C) 2.915
Space Quest 2 (2.0F) 2.936
XMAS Card 1986 2.272
Demo 1 2.915
Demo 2 2.915
Demo 3 2.917
Demo 5 2.425
Kings Quest 4 (v2.0) 3.002.086 7/27/88
Kings Quest 4 (v2.2) 3.002.086 9/27/88
Black Cauldron 3.002.098
Demo 4 3.002.102
Kings Quest 4 demo 3.002.102
Manhunter 1 (1.22) 3.002.107 8/31/88
Manhunter 2 (3.02) 3.002.149 7/26/89
Gold Rush (5.25) 3.002.149
Gold Rush (3.5) 3.002.149
GR (Cracked) (3.5) 3.002.149
GR (Cracked) (5.25) 3.002.149

Apple IIgs versions
Kings Quest 1 (1.0S-88223) 2.272
Mixed Up Mother Goose 2.917
Police Quest 1 (2.0A) 2.917
Demo Disk 1.0C (Censored) 2.917 (guessed)
Black Cauldron 1.0O 3.002.149 2/24/89
Manhunter New York 2.0E 3.002.149 10/05/88

Apple Macintosh versions
Kings Quest 1 (2.0C) 2.440
Kings Quest 2 (2.0R) 2.440
Larry 1 (1.05) 2.440 6/26/87
Space Quest 2 (2.0D) 2.936

Atari ST versions
Donald Duck's Playground 1.0C 2.272 8/08/86

Amiga versions
Kings Quest 2 (2.0J) 2.440
Space Quest 2 (2.0F) 2.936
Leisure Suit Larry 1 (1.05) 2.440 6/26/87

AGDS games
Groza, AGDS sample game 2.440

Notes
Space Quest 1 v2.426 and v2.917 are 100% identical with the
exception of the version of the interpreter used to play them.
Since 2.917 is the same as 2.426, I use 2.426 as the
emulation.

Leisure Suit Larry 1 v2.440 and v2.917 have 100% identicle
files, just 'agi' is different. Since they are the same, I
choose to emulate v2.440, even for the 2.917 version of the
game. Since they are the same it should work ok.

Copy protection
===============
Original Sierra adventure games employed copy protection in various
different schemes on several architectures.

* Key Disk

The most common for of copy proection most Sierra gamers will be
familiar with, is the key disk copy protection of 99% of the early
AGI games.

Since this copy protection was part of the Sierra interpreter and
not a part of the actual game data files (defeating it required
creating a hacked version of sierra.com/sierra.exe), when these
games are played by Sarien, there is in effect, no copy protection
at all.

* Manual Protection

Some later games required information that was part of the
documentation that came with the games, which included games such
as Police Quest 1, Gold Rush, Kings Quest 4, Manhunter and Space
Quest.

Games such as Police Quest 1 and Space Quest made the copy protection
part of the game itself and can't be bypassed (ie: Drink Driving
procedures in Police Quest 1). You will still need the manuals/
documentation to complete these games.

For other games mentioned such as Kings Quest 4 AGI, Gold Rush etc,
Sarien can activly detect and bypass this protection if compiled witj
the "Logic Patching" option. This can be tested by running sarien
with the '-V' option.

Unidentified Games
==================
Unidentified games are emulated with the 'standard' system for that
AGI version.

For V2 AGI games its v2.917
For V3 AGI games its 3.002.149

These are the most 'common' versions around for v2 and v3 games.

Differences between Sarien and Sierra AGI
=========================================
- "Fastest" speed is not available. Reasons: the effect is quite silly
and potentially dangerous -- in modern computers it makes ego run
at light speed and makes the game unplayable anyway. In
multitasking systems "fastest" throws the system load at 100%. As a
side effect, the "SIERRA" word in the Sierra demopack intros will
pulse in a gentle, pleasant rhythm instead of the epilepsy-inducing
stroboscopic effect of the "fastest" mode.

- System console. A transparent "Quake console" is available pressing
the ` key. SHIFT-` toggles game input when the console is active.
AGI commands can be issued directly in the console, use "help" for
a list of available commands.

Credits
=======
Sarien is being written by a loony bunch of people working in their
spare time to squash bugs and add new features. See the AUTHORS file
for the credits list.