ggzwrap
ggzwrap
NAMESYNOPSIS
DESCRIPTION
OPTIONS
ENVIRONMENT VARIABLES
AUTHORS
SEE ALSO
NAME
ggzwrap − GGZ Gaming Zone game client wrapper
SYNOPSIS
ggzwrap [OPTION...] −−exec=GAME
DESCRIPTION
This wrapper takes the place of a game client, and relays the control messages between the game and the invoking instance, which is a GGZ core client. One task is to manage different file descriptors than the ones which are normally used. The GGZ clients do currently communicate using a socket which is passed in the environment variable GGZSOCKET, usually being fd 53 on the client side, so a call to:
ggzwrap −−fdin=$GGZSOCKET −−fdout=$GGZSOCKET −−exec=gameclient
would be equivalent to calling the client directly. However, there are games which communicate using the standard input/output facilities, so they need a redirection like:
ggzwrap −−fdin=0 −−fdout=1 −−exec=gameclient
The GGZ game Muehle uses ggzwrap to demonstrate that game clients do not necessarily need to use any GGZ libraries. The downside is that a lot of game client functionality will not be available. Game clients which want to make use of the wrapper must add a command similar to the one above into the file ggz.modules.
OPTIONS
−−fdin=FD
File descriptor on which the game expects its input.
−−fdout=FD
File descriptor to which the game writes its output.
−−convert
This option automatically converts strings from network format to host format (more correctly, from libggz’s easysock format to the normal null-terminated one) for the game server, and back in the other direction. This will be needed for most games.
−−exec=GAME
The game client to launch as a child process.
ENVIRONMENT VARIABLES
GGZMODE
Set by a GGZ core client to tell games they’re running in GGZ mode.
GGZSOCKET
File descriptor for the connection to the invoking GGZ core client.
AUTHORS
The GGZ Development Team <ggz−dev@mail.ggzgamingzone.org>
SEE ALSO
shadowbridge(6), ggz.modules(5), ggz(7)
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
