Free galaxy cinemas software for linux

Galaxy project is a stellar motion simulator which can show the development of a random field of stars into patterns such as clusters and spiral arms.

Galaxy is a free Linux computer program which simulates the motion of stars under the influence of gravity. Create a field of random stars to begin with, then watch the stars move as they are accelerated by their mutual gravitational attractions.

You can vary the number of stars, their initial velocities around a center, and the strength of the attractive force between them. Watch how the attractive forces accelerate individual stars and send them careening in new directions. Watch how large groups of stars develop into interesting patterns over time, such as clusters and spiral arms.

Galaxy is not for serious physics, but more a toy or educational aid for young students of science.

GalaXQL is an interactive SQL tutorial where the user can manipulate an OpenGL-rendered 3d galaxy using SQL.

SlackFire is an iptables script written especially for Slackware, my favourite Linux distribution in this corner of the Galaxy.
SlackFires main purpose is to protect a stand-alone machine or a small network with a stateful firewall that can be configured easily but in big detail.
Why another iptables script? There are a lot in the Internet, many of them with pretty nice GUI!
First of all, I didnt want to have a firewall that I only could manage and configure via GUI.
Next, I needed to work with a LAN with machines having routable IP addresses. Quite a few scripts available in the Net supported this feature.
Even lesser number of scripts supported configuration of fine-tuned rules. The majority of them just allowed all outgoing connections permitting replies to go back. I wanted to restrict outgoing traffic, too.
I also wanted that configuration can be performed without touching the main script and that this could be done by a person with very little knowledge about iptables.
Thus, I found it easier to write a script of my own than to tune a script written by somebody else.
Version restrictions:
- Currently, SF protects at most two network devices. All other network devices are not affected by the firewall in case packets are sent directly to the box running SF. Forwarded packets are dropped though. (The latter behaviour can be easily fixed.)
- I havent tried SF at machines that use DHCP. I expect that some tuning may be needed, especially in case the script is installed on a DHCP server.
- SF has only been tested on machines running Slackware >=9.0 with C locale. Certain things can break if messages produced by ifconfig and iptables use other languages than English. (This can be easily fixed if needed.)
- There is no support for NFS through a protected network interface yet. This will be fixed.
- Support of FreeS/WAN is not implemented.
There are undoubtedly more, partially because netfilter provides an incredibly rich range of possibilities. Actually, I havent seen an iptables script in the Internet with all the iptables possibilities implemented.
Enhancements:
- A minor change was made in bash syntax when proceeding configuration files.
- Temporary files are now created using mktemp.

Space Commander is a game that aims to be similar to Elite and Privateer, with maybe a bit of Trade Wars thrown in.
The project is a remarkably functional space simulation with under 200 lines of code in the main file.
DEPENDENCIES
You need a recent version of Python and some support libraries. The game is currently being written using Python v 2.4.3 but it may work with newer or older versions with some minor tweaking. I intend to be using Python 2.5 and PyGame 1.8 shortly.
- Python 2.4.3
- PyGame 1.7
- Numeric 22.0
Basically you need a pretty complete Python kit. Most Linux distributions should have everything that you need and Windows / OSX users will be able to install it all with a small bit of effort.
To play the MIDI score in Linux you have to install and configure Timidity due to some old code in sdl-mixer which is a pre-dependency of PyGame. If the game crashes and
complains about midi, just comment out the MIDI line in spacecommander.py to disable it.
As to performance issues. I pass the buck. If it runs too slowly then get a faster computer, better graphics card, better operating system, whatever.
The idea of writing this in Python is to have a compromise between ultimate performance and the ability to understand and tinker around with the code.
You could try reducing the number of stars in the galaxy by editing bigbang.py also.
Feel free to re-write the game in hand optimized assembler, but you must send me a copy of your code per the LICENSE.
RUNNING THE GAME
Linux: ./spacecommander.py
KEYBOARD COMMANDS
ESC / Q: Quit the game
Left / Right: Yaw
Up / Down: Pitch
PgUp / PgDN: Roll
Enhancements:
- The main engine was completely rewritten and now supports flying a spaceship around a randomly generated galaxy. 2D rendering of objects using PyGame is supported.
- Mouse flight control is featured.

galng.tcl project is a report viewer/tool for the Galaxy game.
galng.tcl is a report viewer/tool for the the Galaxy play by email game, primarily for the NG variant.
Now it is usable for playing GalaxyNG. galng.tcl can run, load report, show info from it, have ship designer, have battlesim (which can work with internal simulator from galaxyMapper or with external WOPR tool; you can get it there).
Also it have animated battleviewer (new in 1.5.10) and can send commands to server via internal smtp sender. I plan to support Galaxy PLUS reports, but for now it is in unusable state.
Enhancements:
- battleviewer created
- G+ report handling improved in next iteration
- report now displayed with fixed font
- notes saved implicitly

Xplns reproduces real starry sky on your display of X Window System. It calculates the position of many celestial objects (stars, galaxies, nebulae, constellations, planets, comets, etc.) very accurately.
You can enjoy the past and future sky on the desk top as if you have traveled all around the world. In solar system projection mode, you can examine motion of solar objects.
You can observe motion of the stars with tracking an object. The information display function let you know the rise, set and meridian time of solar objects, when dusk ends, when dawn starts, moon age, etc.
These functions are helpful for observing stars under the real sky. There are fourteen projection mode in xplns, "Horizontal View Mode", "Equatorial Mode", "Ecliptic Mode", "Galactic Mode", "Planisphere Mode" and "Solar System Mode".
Main features:
- Fourteen projection mode (Horizontal, Equatorial, Planisphere, Solar System, Planisphere mode, etc.).
- Display stars, nebulae, galaxies, planets, sun, moon, comets, minor planets, galilean satellites, etc.
- In addition to standard star catalog (up to magnitude 6.5), SAO star catalog and guide star catalog (GSC) supported.
- Display function of name of the constellations, planets, stars, nebulae, galaxies, etc.
- Magnified figure of planets.
- Grid of equatorial coordinates, ecliptic coordinates, horizontal coordinates, etc.
- Motional display of stars with continuous or real-time drive.
- Display function of Rise, set, meridian time of solar objects, moon age.
- Images of celestial objects.
Environment
- Linux 2.4 with libc5(ELF), glibc 2.1, 2.2 or 2.3 on i386
- FreeBSD 4.6.2, 4.7, 4.8 on i386
- XFree86 4.1 or later (256 or more colors)

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