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Fiddlehack. Based on FIQhack, with stronger differences between races and roles. Some commits are also from NHFourk and Dynahack.

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About this document: Last modified by Fredrik Ljungdahl, 2015-11-03

Copyright (C) 2017 Fredrik Ljungdahl.

This README file is licensed under the NetHack General Public License. See libnethack/dat/license for details.

Overview

NetHack is free software, and has no warranty of any sort. For more information on the license situation, read COPYING (a summary), or copyright (full details).

NetHack 4

NetHack 4 is a version of the computer game NetHack, that aims to bring a better-quality codebase and a less hostile interface to NetHack's highly rated "roguelike" gameplay. Unlike many NetHack variants, it is intentionally conservative in making gameplay changes; in particular, it aims to avoid the common problem whereby development is driven via fixing perceived balance issues with the game (often losing the ability to improvise solutions to complex problems in the process), or via focusing too much on the difference between wins and losses (meaning that players are forced into taking the best choice, rather than the choice they enjoy most or a choice they want to try). See the file doc/philosophy.txt for more information on NetHack 4's philosophy.

FIQHack

FIQHack is a fork of NetHack4, aimed at improving balance at places, test out new things, improving the codebase with internal changes and to promote consistency between how players and monsters work, and to improve the monster AI.

More detailed information can be seen in doc/CHANGELOG.

This repository

This repository consists of the following branches

  • A master branch exist containing general experimental in-development changes which is unfinished and yet to be stable and ready for the public. Saves can break at any moment.

  • One-off feature branches, for developing a certain new feature or refactor

  • Branches representing a certain version, used to push changes specific to a certain version. With the exception of critical bug fixes, changes are only pushed to the latest of the versions.

Build Instructions

Dependencies

To build FIQHack, you need make, zlib (which is probably already installed), libjansson (http://www.digip.org/jansson -- shipped with this source), and its development branch. You will also need bison and flex, as well as a C compiler (gcc or clang will both work).

The default setup is to install to ~/fiqhackdir. If you want to change this, you can modify GNUmakefile -- file paths are set at the top. Once you are happy with the setup, to compile, you just do

make && make install

In case this doesn't work, please file an issue describing your error, perhaps documentation is lacking or something is missing. Enjoy!

Old NetHack 4 instructions with aimake

The build instructions in this system are basic "do this, and things should work" advice, and do not go heavily into details of customizing a build.

If you want to do something complex or unusual, you can read the build system manual (which lists everything in more detail than most people will need) via running the command

perl aimake --documentation

UNIX/Linux/Mac OS X

You will need to install FIQHack's dependencies: zlib (which is probably installed already, but you may need to get its development headers from your package manager), and (if you want a working server binary) inetd, postgresql and pgcrypto. You also need development headers for the libraries listed.

FIQHack also requires a working libjansson library (available from http://www.digip.org/jansson), and its development headers. However, both of those ship with NetHack 4, and will be used by default or if you explicitly specify --with=jansson as an option to aimake. (If you have installed libjansson yourself, you can give --without=jansson to use your own copy. This will build a little faster and avoid installing redundant copies of the jansson library.)

You will also need the bison and flex programs (in addition to the usual compilers), because some of NetHack's tools (e.g. the level-handling utilities) are written in them.

If you want to build the tiles or faketerm ports (the default), you will also need to install libpng, and version 2 of the Simple DirectMedia Layer; it may be available in your package manager, or else you could download the source code from http://www.libsdl.org and compile it yourself. Otherwise, you can specify --without=gui as an option to aimake to build just the console port (which is built either way), and disable the tiles ports. Note that the tiles ports do not currently work on Mac OS X.

Assuming you just want to run FIQHack from your home directory, from the top source directory, run:

mkdir build
cd build
../aimake -i ~/fiqhack .. # or wherever you want

If you want to install for all users, you will need to tell aimake which location to install it into, and how to elevate its permissions:

# as a regular user, not root
mkdir build
cd build
../aimake -i /usr/local -S su ..    # or perhaps -S sudo

Note that this requires a group games to exist on your system, and contain no normal users, in order to ensure security of the bones files and high score tables. This is the case on most Linux distributions, but not on all, and may not be the case on UNIX.

To run the console port, use fiqhack. For the tiles/faketerm ports, use fiqhack-sdl.

Windows

You will need to install various prerequisite programs in order to compile NetHack 4. The build system is written in Perl, and as such, the simplest way to get a working toolchain is to install Strawberry Perl, available at http://strawberryperl.com, which comes with a working C toolchain. You will also need to install Flex and Bison, scanner and parser generators; the versions at GnuWin32 (http://gnuwin32.sourceforge.net/) work (although they don't have a very Windows-like idea of directory structure, and thus can't be installed to paths with spaces in, and produce compiler warnings; if you know a better option, let us know). Strawberry Perl's and GnuWin32's executables will all need to be on your PATH (search for "PATH" in Control Panel, on recent versions of Windows).

You will also need to create two more folders, build and install; I recommend that both are parallel to the nethack4 folder that contains the entire NetHack 4 distribution.

If you want to build a tiles or fake terminal port (recommended even if you aren't a tiles player, because Windows' terminal is rather slow), you will need version 2 of the Simple DirectMedia Layer. Download the MinGW version of the development headers and import libraries from http://www.libsdl.org; also download the library itself. Then copy the entire include/SDL2 subdirectory from the appropriate processor-dependent directory of the SDL distribution, to the c/include folder that was created when you installed Strawberry Perl (so that it beomes c/include/SDL2); and all the files lib/*.a from the appropriate processor-dependent directory of the SDL distribution to the c/lib folder that was created when you installed Strawberry Perl (so that they become c/lib/libSDL2.a, etc.). Finally, copy the file SDL2.dll that you obtained when you downloaded the library itself to the prebuilt folder inside the nethack4 folder that contained the distribution.

Once you've done this, open Strawberry Perl's command prompt, change to the build directory, and type:

perl ..\nethack4\aimake -i ..\install --directory-layout=single_directory

aimake should compile and install the entirety of NetHack 4 for you into the install directory. In order to run the console port, change directory to the install directory, and type nethack4. For the tiles/faketerm port, use nethack4-sdl.exe.

It is possible that ld.exe will crash in the process of the build. This only seems to happen after it has already produced the output that aimake needed, so you can just dismiss the error box and let the build work as normal.

Note that despite the best efforts of the rendering library, the game is quite slow to render on the console when using recent versions of Windows; this is because the Windows console itself is prety slow. (For a comparison, you can try running a command that produces a lot of text, such as perl ../nethack4/aimake --documentation, and observing how long it takes to scroll the screen when you press the spacebar.) The faketerm port somehow manages to be faster, even though it too is fairly slow.

Server setup

If you want to run your own server (which is only necessary/useful if you want people to be able to connect to your NetHack 4 server from other computers, rather than running locally), you'll need to give --with=server as a command-line option to aimake, and also need to set up the postgresql database:

su postgres             # or any other way to elevate your permissions
createuser -DPRS nh4server
# You'll be prompted for a password at this point.
createdb -O nh4server nethack4
echo 'CREATE EXTENSION pgcrypto' | psql -d nethack4
exit                    # go back to your normal permissions

Next you need to edit the configuration file (a blank configuration file will have been installed in the appropriate place for you to edit). If you installed into ~/nethack4, it should be named ~/nethack4/config/nethack4.conf; other forms of install may have other locations. (You can run nethack4-server with no arguments to discover where the configuration file should be; if it can't find its configuration file, it'll complain and tell you where it's looking for it.)

The configuration file looks something like this:

dbhost=127.0.0.1
dbport=5432
dbuser=nh4server
dbpass=**password**
dbname=nethack4

Note that the port number has been known to vary based on the way that your copy of postgresql is packaged; you may want to verify it by looking at postgresql's configuration, /etc/postgresql/.../postgresql.conf. Also be aware that the configuration file necessarily has to store the password in plaintext (a hashed password is no good for actually logging into the database); you may want to change the permissions on the configuration file to help protect it. (I recommend using a long random password, because it's only used by computers; there's no need for humans to memorize it.)

Finally, you need to tell inetd about the new server setup. As root, you need to add two extra lines to /etc/inetd.conf, looking something like this:

53430 stream tcp  nowait username /path/to/nethack4-server nethack4-server
53430 stream tcp6 nowait username /path/to/nethack4-server nethack4-server

(Here, "username" is the username of the user that the server binaries should run as.) Then, again as root, just send a SIGHUP to inetd (killall -HUP inetd), to tell it to load the new configuration file. inetd will be responsible for starting the server processes when a new connection is made; no server processes will be running while no games are being played. To test your server setup, you can use the nethack4 client; there's a menu option to connect to a server with it.

This only really works properly on Linux, at present; on Mac OS X, it may be possible to get a partially working server, but functionality is missing due to that operating system's lack of support for realtime signals.

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Fiddlehack. Based on FIQhack, with stronger differences between races and roles. Some commits are also from NHFourk and Dynahack.

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