Change Log

This page is automatically generated from the master branch on Github.

0.5.0 2012/06/10

• First release in 7 years!
• New Logo (#57)
• Massive performance improvements, OpenMP, SSE (Frank Möhle #4 #7 #9 #10 #13 #14 #22)
• Free CPU when idle - helps to keep your laptops cool (Frank Möhle)
• User interface widgets with Agar (#1 #31 #41)
• Skybox rendering, currently only 2 skyboxes (#2 #39)
• International keyboard support fixed (Frank Möhle #11)
• Support for Lua 5.1 (Frank Möhle #16)
• Streaming music (OS X only, David Turnbull #5)
• Screenshot to PNG (Frank Möhle #13)
• Added stereomode 2 for red-cyan anaglyph glasses (Frank Möhle)
• Smooth auto-zoom when using zoomfitauto 2 (Frank Möhle)
• Detect number of processors when using OpenMP (Frank Möhle #4 #10)
• General operating and build system improvements and compatibility:
• Windows Installer improvements: (Frank Möhle #52)
• Fix for crash when memoryavailable is more than 2GB (Frank Möhle #15 #19)
• Limit frame rate to 60fps (Frank Möhle #25)
• Seed the random number generator in Lua on startup (Frank Möhle #26)
• Record until frame N by referencing a frame that doesn't exist yet with the "frame" command (Frank Möhle #26)
• Infinite loop bug when running "framecompression 0" (Frank Möhle #26)
• Reduce console verbosity (Frank Möhle #28)
• Detect memory available and automatically use a percentage of it (50% by default, #40)
• Many other subtle features, speed improvements, bug fixes, etc.

0.4.2 2005/06/10

• Console tab completion
• Added Q and W keys for lowering and increasing frameskip
• added S key to toggle stereo mode
• added D and F to decrease and increase stereoseparation
• Reorganised F1 help
• Added stereoosd to make the osd shown in stereo (but stretched for now)
• When drawosd is 0, the console and console log will be displayed when you activate the console
• Fixed a bug with the octree (and others) sometimes not being drawn
• Fixed colour scheme bug with one colour

0.4.1 2005/06/08

• Stereoscopic mode uses degrees instead of a distance and keeps the simulation in the middle of your view
• autoconf uses sdl-config
• Added a vim syntax highlighting and tabstop setting to the top of all .gravitspawn files
• Fixed an endless loop in dust.gravitspawn
• Slightly modified dust.gravitspawn to sometimes only have one particle in the center of the dust cloud
• Less significant figures shown for colorschemeadd
• More significant figures shown when setting g
• g is now a float
• osd displays frameskip with display frame in playback
• Fixed a bug when frameskip is on, spawning a new simulation caused the simulation to display incorrectly
• Added negative mass colour key and the colour key is thinner
• Added "zoomfitauto 2" to autofit every frame ("zoomfitauto 1" is still default)
• Added original Makefile (Makefile.old) to source distribution
• Increased initial velocities in many-galaxy.spawnparticles

0.4.0 2005/05/31

• Added an optional dependency - lua
• Scriptable spawn locations using lua
  • The spawn command accepts an argument that executes a lua script called [name].gravitspawn in your spawn directory
  • spawn by itself will execute default.gravitspawn which picks a random script
  • Added spawn scripts: one-galaxy, binary-galaxy, many-galaxy, dust, snake, loop
  • binary-galaxy and many-galaxy will randomly spawn elliptical and spiral galaxies
  • Spiral galaxies now spawn on arbitrary angles
• frameskip accepts negative values to play back in slow motion
  • the negative number represents how many video frames display each recorded frame
  • particles are interpolated between frames
• Gravit now uses autoconf and automake (Thanks Alec Thomas)
  • It now stores data and config files in configured places (/usr/local/bin,/usr/local/share/gravit,/etc)
• Supports multiple users for UNIX builds
• Removed gravit-x.x.x-win32.zip package
• Renamed gravit-x.x.x-src.tgz package to gravit-x.x.x.tar.gz
• recordingvideorefreshtime in gravit.cfg is now 100
• Added two colour schemes: momentum and kinetic energy (Thanks Sam Lander)
• Colours are only updated once per frame and when changing colour modes
• Added zoomfix and zoomfitauto to automatically zoom in or out to fit all the particles on the screen (zoomfitauto is on by default)
• When two particles spawned in the same location gravit crashes on the first frame. Particles now get checked and moved on spawn.
• When the GL_ARB_point_parameters and GL_ARB_point_sprite extensions don't work, default to particlemode 2 instead of 0
• saveauto stopped saving after it reached max frames -- fixed
• "Can't load custom.cfg" warning gone -- if it's not there it's ignored using "ignoremissing"

0.3.2 2005/04/15

• fixed compilation on Mac OS X (Thanks Grigory Entin!)
• added help command for help
• added list command to list all available console commands
• added savelist to list all saved simulations
• added savedelete to delete a simulation
• more keys can be typed in the console
• console key repeat is now on (holding down a key to print multiple keys)
• console typed history, pressing up and down will scroll through your typed history
• console left and right keys will move the cursor around
• help console messages are now blue
• "G" set message is gone

0.3.1 2005/04/13

• Added recording statistics that display percentage completed for generating the tree and adding velocities.
• Added particlerendermode 2 which is more compatible and looks like particlerendermode 1, but about half as slow (on my pc at least).
• particlerendermode is set to 2 by default.
• Added videorestart command -- restarts your video after changing video settings such as resolution or fullscreen.
• videowidth and videoheight won't change the gui until you do a videorestart
• Alt-Enter switches between fullscreen and not (buggy?)
• Added timers: timeradd, timerdel, timerlist
• Particles spawn faster with many particles
• Galaxies are spawned a little differently. Their height is 100th of the radius and their individual velocities are faster within the galaxy.
• Added maxvertices setting that automatically increases tailskip when too many things are being rendered
• tailskip is now set to 1 by default
• Tree renders correctly with stereo mode on
• Added autorecord to start recording after spawning particles.
• Major revamp of screensaver.cfg using timers
• Added popuptext command, not useful (yet!) :)
• Added autocenter command to automatically go to the 'middle' of the simulation (it's on by default)
• Simulation name is cleared when spawning a new simulation
• /CP was meant to be /C for screensaver code

0.3.0 2005/04/11

• Windows Installer package added
• Windows DLL Zip package removed
• Windows Screensaver added
  • Install it by running the "installscreensaver" command
  • You need the SDL libraries in your Windows System directory for the screensaver to work (the Windows Installer does this for you)
  • The Gravit makes use of the Windows registry to help the screensaver know where it is installed. It is saved on a per-user basis.
  • Modify screensaver.cfg to customise your screen saver.
  • You can hit the space bar during the screen saver to use Gravit.
• Added stereo/stereoseparation commands! (Careful, these make your eyes hurt)
  • This draws two versions of the simulation on the left and right side of the screen.
  • Have a read of http://www.angelfire.com/ca/erker/freeview.html to work out what your eyes can do... then,
  • Set stereoseparation to be negative for a "Parallel" stereo view or positive for "Cross-eyed" view.
  • The bigger the stereoseparation the more depth you will see.
  • For best results:
• g command added, for changing G in the F=Gm1m2/d^2 calculation.
  • The value you get out of setting g is "10 ^ -g". Default is 5 (0.00001). The screensaver uses 4 (0.0001).
  • The lower the number the less accurate the simulation is, but each particle moves quicker per frame.
• Added saveauto command to automatically save every n frames. Set it to 0 to turn it off.
• autorotate command added, for automatically rotating the camera. It was implemented primarily for the screensaver.
• Added zoom command. This is the variable you change when you zoom in and out.
• showcursor command added, hides or shows the mouse cursor
• Got rid of --exec. See --help!
• Got rid of some redundant matrix code
• Fixed mouse input oddness
• Mouse isn't stuck inside your window anymore
• Fixed bug in recordingvideorefreshtime. When set to 0 it would the screen as fast as possible (instead of once every finished recorded frame).
• Few spellings of the old name 'Graviton' fixed

0.2.2 2005/04/09

• load and save commands added
  • usage is save [simulationname] or load [simulationname]
  • name doesn't require an extension - they're made for you in the save directory.
  • if you don't specify simulation name, it will use the last name you used in a load or save command (if you have used one)
  • control-s is a shortcut to save to the simulation
  • the current simulation name is displayed on the top of the screen
• Better (?) mouse controls. You need to hold down a mouse button to rotate the view. This seems to be useful in non-fullscreen mode.
• Mousewheel up/down zooms in/out
• Added command-line parsing
  • --help/--version self expanatory
  • --execute to execute a command
  • --noscript to not run gravit.cfg on startup
• Colour scheme bar is thinner
• Colour scheme bar can be turned off with "drawcolourscheme 0"
• Gravit now quits when the user hits the X in their WM
• Less alloc debug messages
• Compiling a console only binary works again (using -DNO_GUI)

0.2.1 2005/04/08

• Added recordingvideorefreshtime command to allow Gravit to render to the screen while recording a frame or spawning particles.
  • This makes your FPS smoother during a recording.
  • Also allows you to restart the spawn process while spawning lots of particles.
  • With a lot of particles, you can see the octtree being generated!!
  • See gravit.cfg for more details...
• Added colourschemenew and colourschemeadd commands to allow you to customise the colour scheme
• Recording is now about twice as fast due to an inefficient distance calculation. (Thanks to Michael Vanslembrouck for pointing that out)
• Window Title now tells the status of your recording. For example "17/2532 (skip:16)" means 17 frames recorded our of a 2532 maximum with a record skip of 16.
• spawning galaxy sizes fixed
• grativ.cfg sets videobpp to 32 now, instead of 16.
• Windows zip's have renamed files to ChangeLog.txt and README.txt

0.2 2005/04/07

• Added SDL_image as a dependency
• Added a second help menu (F2)
• Added blendmode command which has 5 blending modes (L key)
• Added demo.cfg to distribution (woops)
• Added sprite particle effects!
  • It is on by default and uses the GL_ARB_point_parameters and GL_ARB_point_sprite extensions.
  • Unfortunately these extensions may not work under certain conditions. Turning particlerendermode to 0 will make particles visible again.
  • It will fall back to the original GL_POINT renderer if your card does not support them. It will also tell you that it has done this.
  • Added particle.png
• Added particlerendermode command (0=original 1=sprites) ( \ Key )
• Added particlesizemin ( Keys: - = ) and particlesizemax ( Keys: [ ] ) commands to change the size of your particles.
  • When you're in particlerendermode 0 only particlesizemin applies
• Added drawtree command which displays the last generated Oct Tree (T key)
  • There are three modes: 0 off, 1 lines, 2 boxes
  • leaf nodes are highlighted
• Added screenshot and screenshotloop commands, they are also bound to F9 and F10. They create (many) BMP files.
  • This will make a screenshots directory for you.
  • Careful! F10 takes a screenshot every frame!
• Added a new colour mode: Acceleration!
• Colour modes can be changed with the / key.
• Console can now be escaped by pressing escape, backtick (`) and hitting enter on an empty command
• Console cursor blinking is now based on time instead of frames
• Console input box is a little more obvious when active
• Added drawosd command which can hide the text ( O key )
• If initializing video fails, it will try change some settings for you and try again.
• All text files are saved in UNIX file format
• README, ChangeLog and config files are now in Windows format in the Windows packages
• Fixed permissions in tarball to 644
• Fixed library include path (/usr/X11R6/lib) issue (Alec)
• tailskip variable caused an infinitle loop when set to 0 (fixed)
• Many Makefile changes
• Added an icon!
• Thanks to Alec Thomas for Linux testing and code fixes!

0.1 2005/04/04

• Initial Release