download system download the tar file and place it in the ai/ directory. If the

AI needs libraries you'll have to download those too and put them in the

ai/library/ directory. All AIs and AI Libraries that have been uploaded to

the content download system can be found at http://noai.openttd.org/downloads/

The AIs and libraries can be found their in the form of .tar.gz packages.

OpenTTD can read inside tar files but it does not extract .tar.gz files by

itself.

To figure out which libraries you need for an AI you have to start the AI and

wait for an error message to pop up. The error message will tell you

"couldn't find library 'lib-name'". Download that library and try again.

4.2) OpenTTD directories

---- -------------------

OpenTTD uses its own directory to store its required 3rd party base set files (see section

4.1 "Required 3rd party files") and non-compulsory extension and configuration files. See

below for their proper place within this OpenTTD main data directory.

The main OpenTTD directories can be found in various locations, depending on your operating

system:

	1. The current working directory (from where you started OpenTTD)

		For non-Windows operating systems OpenTTD will not scan for files in this

		directory if it is your personal directory, i.e. "~/", or when it is the

		root directory, i.e. "/".

	2. Your personal directory

		         C:\Documents and Settings\<username>\My Documents\OpenTTD (2000, XP)

		         C:\Users\<username>\Documents\OpenTTD (Vista, 7)

		Mac OSX: ~/Documents/OpenTTD

		Linux:   ~/.openttd

	3. The shared directory

		Windows: C:\Documents and Settings\All Users\Shared Documents\OpenTTD (2000, XP)

		         C:\Users\Public\Documents\OpenTTD (Vista, 7)

		Mac OSX: /Library/Application Support/OpenTTD

		Linux:   not available

	4. The binary directory (where the OpenTTD executable is)

		Windows: C:\Program Files\OpenTTD

		Linux:   /usr/games

	5. The installation directory (Linux only)

		Linux:   /usr/share/games/openttd

	6. The application bundle (Mac OSX only)

		It includes the OpenTTD files (grf+lng) and it will work as long as they aren't

		touched

Different types of data or extensions go into different subdirectories of the chosen main

OpenTTD directory:

	Config File:         (no subdirectory)

	Screenshots:         (no subdirectory)

	Base Graphics:       baseset                 (or a subdirectory thereof)

	Sound Sets:          baseset                 (or a subdirectory thereof)