This document describes things common for all the programs.

This file is based on the OpenXcom 1.0 README, except s/folder/directory/g like
a civilized person.


1. LBX files
=============

1oom requires a copy of the Master of Orion (v1.3) LBX files.
See doc/lbxmd5.txt for the expected MD5 sums.

The LBX file can be in a different directory as the executable.
You can also specify your own path by passing the command-line
argument "-data <path>" when running 1oom. The given path is saved
to the configuration file.

The LBX files are first looked for in the directory specified with
"-data <path>". If not found there, the following subsections apply.

1.1. Windows, MSDOS
--------------------

1oom will check the directory of the executable.

1.2 Unix (Linux)
-----------------

According to the XDG standard, 1oom will also check the
following directories:

- $XDG_DATA_HOME/1oom
- $XDG_DATA_DIRS/1oom

Or if those variables aren't available:

- ~/.local/share/1oom
- /usr/share/1oom
- .

Choose whichever you prefer.


2. Configuration
=================

1oom is configured via command-line arguments or editing the
configuration file. Each program has a separate configuration file (if any).

2.1. User Directory
--------------------

1oom creates a User directory with all the user savegames and
options in one of the following paths:

- <game directory> (win32, msdos)
- $XDG_CONFIG_HOME/1oom (Unix)
- ~/.config/1oom (Unix)

You can also specify your own path by passing the command-line
argument "-user <path>" when running 1oom. Note that unlike "-data"
the setting is not saved in the configuration file.

2.2. What is not saved
-----------------------

Most options set via command-line arguments are saved to the configuration
file (if any). The notable exceptions are:

    -c          Config filename in the config file? Too meta
    -cro        Can not write "do not write config" to config
    -user       Config file is in user directory
    -(no)log    Log is opened before reading config
    -file


3. Command-line arguments
==========================

The following are for the game UIs and lbxview. See doc/usage_*.txt for
the other tools.

For all:
    -?                   Show command line options
    -c FILE.TXT          Set config filename
    -cro                 Do not write a config file
    -user PATH           Set user directory
    -data PATH           Set data directory
    -log FILE.TXT        Set log filename
    -nolog               Do not create a log file
    -file FILE.PBX       Add PBX file

For UIs with audio support:
    -audio               Enable audio
    -noaudio             Disable audio
    -music               Enable music
    -nomusic             Disable music
    -sfx                 Enable SFX
    -nosfx               Disable SFX
    -sfxinitpar          Init SFX in parallel (if possible)
    -nosfxinitpar        Do not init SFX in parallel
    -musicvol VOLUME     Set music volume (0..128)
    -sfxvol VOLUME       Set SFX volume (0..128)
    -audiohz HZ          Set audio sample rate (Hz)
    -audioms MS          Set max audio slice size (ms)

For UIs with audio support if libsamplerate is available:
    -libsr               Use libsamplerate
    -nolibsr             Do not use libsamplerate
    -libsrscale PERCENT  libsamplerate scaling %
    -libsrmode MODE      libsamplerate mode (0 = best, 4 = worst)

For graphical UIs:
    -fs                  Enable fullscreen
    -window              Use windowed mode
    -winw WIDTH          Set window width
    -winh HEIGHT         Set window height
                           if w & h are 0 then use game resolution
    -fsw WIDTH           Set fullscreen width
    -fsh HEIGHT          Set fullscreen height
                           if w & h are 0 then use desktop resolution

For some graphical UIs:
    -aspect ASPECT       Set aspect ratio (*1000000, 0 = off)
                           default = 833333, or (1000000 * 5)/6

For SDL HWs:
    -forcesw             Force software rendering
    -noforcesw           Do not force software rendering
    -mousespd SPEED      Set mouse speed (default = 100)
    -sdlmixersf FILE.SF2 Set SDL_mixer soundfont

For SDL1 HW:
    -bpp BPP             Set bits/pixel (0 = autodetect)
    -filt FILTER         Set OpenGL filter (0 = nearest, 1 = linear)

For SDL2 HW:
    -intscaling          Force integer scaling
    -nointscaling        Do not force integer scaling
    -relmouse            Use relative mouse mode
    -norelmouse          Do not use relative mouse mode

For all game UIs:
    -dumpstr             Dump strings in PBXIN format
    -dumpnum             Dump numbers in PBXIN format
    -new GAMESEED        Start new game using given game seed
                         GAMESEED is OPT[:RACES[:BANNERS[:GSEED[:HUMANS]]]]
                         OPT is PLAYERS*100+GALAXYSIZE*10+DIFFICULTY
                           2..6, 0..3 = small..huge, 0..4 = simple..impossible
                           default same as last new game
                         RACES is PLAYERnRACE*(0x10^n), n=0..5
                           0 = random, 1..0xA = human..darlok
                           default 0 (all random)
                         BANNERS is PLAYERnBANNER*(10^n), n=0..5
                           0 = random, 1..6 = blue..yellow
                           default 0 (all random)
                         GSEED is a 32 bit galaxy seed or 0 for random
                           default 0
                         HUMANS is PLAYERnISHUMAN*(10^n), n=0..5
                           default 1 (player 1 is human, others AI)
    -ngn PLAYER NAME     Set new game emperor name for player 1..6
    -ngh PLAYER NAME     Set new game home world name for player 1..6
    -nga AITYPE          Set new game AI type (0..1)
    -load SAVE           Load game (1..8 or filename)
                         1..6 are regular save slots
                         7 is continue game
                         8 is undo
                         2300 and over are yearly saves
    -continue            Continue game
    -undo                Enable undo saves
    -noundo              Disable undo saves
    -yearsave            Enable yearly saves
    -noyearsave          Disable yearly saves
    -skipintro           Skip intro
    -noskipintro         Do not skip intro
    -nextturn            Go directly to next turn (for reproducing bugs)
    -savequit            Save and quit (for debugging)
    YOMAMA               Skip intro this time
    s                    Continue game

For classic game UI:
    -uiscale SCALE       UI scaling factor
    -uiextra             Enable UI extras
    -nouiextra           Disable UI extras
    -mwislider           Invert mouse wheel for sliders
    -nomwislider         Do not invert mouse wheel for sliders
    -mwicounter          Invert mouse wheel for counters
    -nomwicounter        Do not invert mouse wheel for counters
    -uismscroll SPEED    Starmap scroll speed (1..10, 0 = instant)

3.1. -new
----------

Whenever a new game is started, the log displays a line such as:
    Game: new game -new 621:0x5:4:0x3f5e5b32:1 -nga 0

The alphanumeric jumble is a game seed. It can be given to -new to start
a new game with the same galaxy and opponents.

The game seed format is OPT:RACES:BANNERS:GSEED:HUMANS where
    OPT is PLAYERS*100+GALAXYSIZE*10+DIFFICULTY
      PLAYERS is 2..6
      GALAXYSIZE is 0..3 = small..huge
      DIFFICULTY is 0..4 = simple..impossible
      default same as last new game
    RACES is PLAYERnRACE*(0x10^n), n=0..5
      0 = random
      1 = human
      2 = mrrshan
      3 = silicoid
      4 = sakkra
      5 = psilon
      6 = alkari
      7 = klackon
      8 = bulrathi
      9 = meklar
      a = darlok
      default 0 (all random)
    BANNERS is PLAYERnBANNER*(10^n), n=0..5
      0 = random
      1 = blue
      2 = green
      3 = purple
      4 = red
      5 = white
      6 = yellow
      default 0 (all random)
    GSEED is a 32 bit galaxy seed or 0 for random
      default 0
    HUMANS is PLAYERnISHUMAN*(10^n), n=0..5
      default 1 (player 1 is human, others AI)

Omitting a value sets it to the default one.
Some examples:

    -new 634
        * 6 player / huge / impossible game as a random race

    -new :0x7
        * player / size / difficulty same as last new game
        * as klackon

    -new :
        * player / size / difficulty same as last new game
        * as random race

    -new 634:0x162
        * 6 player / huge / impossible game as a random race
        * (2) as mrrshan, against (6) alkari and (1) human, others random

    -new 621:0x5:4:0x3f5e5b32:1
        * 6 player game in (2) large galaxy with (1) easy difficulty
        * player 1 race is (5) psilon, others random
        * player 1 banner is (4) red, others random
        * galaxy and random races/banners based on seed 0x3f5e5b32
        * player 1 is human, others AI

    -new 634:0x15533a
        * 6 player / huge / impossible game
        * as (a) darlok, against (1) human, (5) psilon, psilon,
          (3) silicoid and silicoid

    -new 304:0x48:25::11
        * 3 player / small / impossible game
        * player 1 is (5) white (8) bulrathi,
          player 2 is (2) green (8) sakkra,
          player 3 is random
        * players 1 and 2 are human

3.2. -nga
----------

The -nga command line parameters selects the AI type to use when starting
a new game via -new. The values 0 and 1 correspond to Classic and Classic+,
respectively.

3.3. -file
-----------

Unlike Doom, the "-file" part needs to added for each PBX file.
Like Doom, the given PBX filenames are not stored anywhere and must be given
with -file whenever the PBX files are to be used.


4. New features
================

4.1. Space combat autoresolve
------------------------------

The space combat autoresolve is provided as an option for skipping battles.
Pressing the Auto button results in the battle beings fought as if the player(s)
pressed Auto right after starting combat.
The Retreat button works as if the (human) player(s) pressed Retreat at the
earliest and every opportunity.

4.2. Improved galaxy generator
-------------------------------

The improved galaxy generator allows you to fine-tune your opponents' positions.
num_dist_checks sets the number of players that will be kept away from others.
num_ok_planet_checks sets how many players will have an acceptable second planet.