techtree for FreeCiv, v2.1, by David W. Pfitzner dwp@mso.anu.edu.au

Produces a chart of the "technology tree" ("advances chart") 
for FreeCiv [1].

Features:
---------
- GPL'ed source.
- Produces a postscript image (no extra tools required).
- Input data is "rulesets" files, from the freeciv distribution.
  (Data included is from freeciv 1.8.0).
- Includes information on when units, city improvements, 
  wonders etc become available and obsolete.
- Can optionally print the chart horizontally across two 
  pages -- i.e., effectively A3 sized.
- Various command-line options, plus some in-code compile-time
  options for more obscure things.
  E.g. defaults to roughly A4-sized pages (with some concessions
  towards Letter), but customizable on the command-line.
- Redundant links are detected and shown as dashed (or can be 
  removed altogether).

Directions:
-----------
See the INSTALL file for instructions on compiling/installing.
In brief:
  1. ./configure
  2. make 
  3. techtree/techtree > techtree.ps
or: 
   techtree/techtree [options] > techtree.ps
eg: 
   techtree/techtree -rulesetdir data/civ1 -two_page 1 > techtree.ps

Options:
--------
For a quick list of available command-line options and 
defaults, try techtree/techtree --help
For more information, see the file OPTIONS.

Random Numbers:
---------------
The new (2.0) method of calculating the node layout/topology 
gives results whose quality can vary somewhat depending on the
seed used for random numbers.  You can either experiment 
manually with the command line option --seed=XXX
or automate the process with --n_seed=XX

Adjusting the input data:
-------------------------
Just edit the ruleset files, or point techtree to a different
set of ruleset files with the -rulesetdir option.

Credits:
--------
The files in the directories ./freeciv and ./data are based 
on the freeciv sources (freeciv 1.8.0); the rest are by me,
David W. Pfitzner, dwp@mso.anu.edu.au

Availability:
-------------
<URL:http://msowww.anu.edu.au/~dwp/freeciv/techtree>

References:
-----------
[1] Freeciv Home Page: <URL:http://www.freeciv.org/>