New in 0.7.3 * April 27, 2000 * Cygwin32 build fixes * MSVC++ build fixes * Mac build fixes * Updates to JSBsim flight dynamics code that includes a generic reconfigurable flight control system. * Updates to LaRCsim flight dynamcis code contributed by UIUC that allows loading aircraft specifications at runtime from config files. UIUC is using flightgear as a platform to do icing research. The UIUC aircraft use the c172 gear model for now which causes some weirdness on the ground for some of the larger aircraft. * Flight model no longer has to be chosen at compile time. * Separated ephemeris code from the actual sky rendering code and gave this whole section a big overhaul. The moon should now consistantly have the correct phase. * Rebuilt the sky dome using ssg. * Removed dependencies on mat3.h and friends (old srgp support lib) * Added navaid database management and query code. * Airport lookups now done through gdbm (a light weight embedded database.) * Converted ssgVTable's to ssgVtxTables which do proper memory management and should facilitate use of compiled vertex arrays once ssg add support for these. * Simple radio stack added to the instrument panel. The frequencies are currently hardwired to default values until the UI for changing them is finished. But, this is enough to fly ILS instrument approaches. * Added a chronometer to the instrument panel. * Compass, vsi, and altitute instruments and vacuum system are more accurately modeled. * Added a magnetic variation model to "simgear" for use by flightgear. * Added custom joystick client support so sim can be flown from a remote joystick connected to another machine. This is in support of some custom hardware located in the human factors research lab of the university of minnesota. New in 0.7.2 * February 17, 2000 * Lots of code reorganizations * Build requires plib-1.1.x * Build requires SimGear-0.0.x * LaRCsim/c172 is now the default aircraft model. * Added flaps support to control model. * Lots of updates and tweaks for the LaRCsim/c172 model. * Use a more standard texture/blend mode combination for sun/moon halos to avoid render path that's not supported by all cards/drivers. * Change reported speed on hud from V_equiv_kts to V_calibrated_kts * Instrument panel rewrite by David Megginson. This isn't quite as flashy as the first pass, but is much more functional, plays much better with opengl, and it should be relatively easy for someone with graphical skills to make it look more spiffy. * MacOS fixes contributed by Darrell Walisser. * Many JSBsim updates. * Added a screen snapshot facility (F3). * Added a load/save state function contributed by David Megginson. * Added support for various I/O protocols and channels so that flightgear can communicate with itself and other programs through a variety of means. * Bug fix: The aircraft model used for external views was being included in the height above terrain check so when the view position and the aircraft model collided the current altitude kept getting pushed up to compensate, but of course the aircraft model would get pushed up as well because it tracks the current aircraft position and orientation. Thus you had a never ending cycle ... * Oliver's multiplayer network code now moved to his own subdirectory: NetworkOLK * Added simulated cloud puffs as we pass through the cloud layer. * Cleaned up some memory leaks occuring between ssg and flightgear. * Update to Christian's weather data base code. New in 0.7.1 * Durk Talsma added a nifty cloud layer. * Default to Christian Mayer's new weather system. * Added routines to do screen printing contributed by Mark Vallevand. * Added routines to do screen shots to ppm graphics file (all platforms) contributed Rich Kaszeta. * Added a magic carpet (aka slew) mode. * Added a hot air balloon simulator mode. (alpha) * Added a simple (direct lincage) autocoordation feature. * Added a mode to control view (side to side and up and down) with the mouse. * Fixed a DEM decoding problem which caused most of the terrain to be 256 meter too high (and regenerated the world scenery with proper elevations.) * Updates to JSBsim. * Added support for a pilot view offset from the center of gravity. * Various platform portability fixes. * Updated time-offset/syncing command line options. * Updated the FDM <==> Flight Gear interface to be more object oriented. This should hopefully pave the way for being able to simulate several concurrent entities. * Removed unimplemented menu entries. * Various scenery tools changes and enhancements in preparation for adding runways (hopefully for the next release.) New in 0.7.0 * Autopilot can now fly great circle routes. * Incorporated a first stab at some networking code contributed by Oliver Delise. * Added Christian Mayer's new weather subsystem. * Started adding support for "external" views ... still needs some work. * Added a flight model acceleration funtion. * Added support for mouse yoke control contributed by David Megginson. * FDM model hertz now definable from the command line. * Added initial timezone support so the user can have better control and more options for setting the starting time of the sim. * We now draw nonexistant tiles as ocean which means we only have to create and distribute tiles that contain some sort of land mass. * Replaced basic render engine with plib's ssg (simple scene graph). * Now expect plib to be installed in it's one true and official location. * Added support for timegm() if it exists which explicitely expects GMT input. * A bit of your basic code reorganization and shuffling. * Removed tools dependency on libgfc. Functionality is now covered by shapelib which has been added into the Tools tree. * Added support for the wonderful GSHHS global land mass data set. * Removed dependecy on process-dem.pl script. * Created a new distributed/parallel tile build system ... hmmm kind of super computer or beowulf style stuff for getting large chunks of scenery built as fast as possible. * Only generate tiles that have land mass data since the sim can recreate pure ocean tiles on the fly. * First stab at a water flattening scheme to prevent oceans, lakes, and rivers from running up and down the sides of hills. * Changed the default "Work/" subdirectory layout. * Updates to better handle segment boundaries in preparation for real airport runway and lighting modeling. * Updates and enhancements to my polygon management class. * Updates to JSBsim. * Updates to Tony's c172 model. * Updated getting started guide from Micheal Basler. * FreeBSD portability tweaks. * MACos portability tweaks. * Borland C++ tweaks. * MSVC++ tweaks. New in 0.6.0 * Tons of improvements with scenery creation. Inter-tile gaps have been fixed, distorted textures have been fixed, real coastlines have been added, and many other subtle improvements. * Tools for parallelizing the scenery building tasks. For instance by using 20 machines in parallel, scenery for the entire USA can be regenerated in just over 4 hours vs. 70+ hours on a single machine. * Texture scale can be specified (and changed)( in the materials file. The sim must be rerun for the change to take effect. * Windows now uses plib joystick code so rudder pedals should now work. * Now builds against Steve Baker's plib (portable game devel library) distributed separately (www.woodsoup.org/~sbaker/plib/) * Many source code changes for the MacOS port contributed by Darrell Walisser (the port isn't quite there yet ...) * Source code changes for better compiling with the Borland compiler. * Source code changes for better compiling with the native Irix compilers. * Fixed a bug so you can now fly across the international date line (or more precisely the division between longitude = +/-180. * Tweaks to the Astro section contributed by Durk Talsma. * Autopilot improvements contributed by Norman Vine. * Fonts/characters now drawn with texture maps for increased speed. * Instrument panel can be toggled on and off with "P". * GUI interface for tweaking some autopilot parameters. * HUD appearance and layout changes contributed by Norman Vine, includes faster font drawing for much better performance. * Reset function added to reset you to your starting conditions. * GUI function to enter a new airport id (and be transported there) * Added serial output support for an "in-development" full motion cockpit. * "Just in time" texture loading to reduce initial sim loading time. New in 0.59 (This is an intermediate/stepping stone release. Skip this release if you are interested in stability.) * IRIX portability changes and support for native SGI compilers. * Solaris portability tweaks * Incorporated some MacOS portability changes (although the port is not yet complete.) * Changes to allow adjustment of the autopilot settings while it is activated. * Began complete overhaul of scenery generation tools. * Fixed a view frustum culling bug. * separated lib GPC (generic polygon clipper.) GPC is not "freeware" and the author has explicitely refused our request to distribute source code for this library with Flight Gear. * updated installation and getting started guide * switched to a simpler, lighter weight frame rate calculation method. * new tile division scheme. * GPS serial *output* fixes. * Added a nifty halo to both the sun and moon. Preparation for allowing subtle moon lighting effects at night. * Incorporated Jon Berndt's new C++ flight model rewrite. * Autopilot settings can be adjusted while active. * Updates to the instrument panel. * Fixed AOA reading on the HUD. * Added random splash screens. * Modified scenery loader to accept tri-fans. * Other non-backwards compatible changes to scenery file format and tile layout. New in 0.58 * Added JSBsim alpha code ... this is Jon S. Berndts alpha FDM rewrite. Still lots to do, but you can watch a balistic flight for a short time. * Renamed Simulator/Flight to Simulator/FDM * Tweaks to assist building FGFS on solaris platforms. * Moved Lib/DEM to Tools/DEM * Started preparations for scenery generation tools overhaul. * More MSVC++ support. * Removed code that made the sun bigger at the horizon since this is just an optical illusion in real life. * Bug fixed so that the sim can start out at an airport below sea level. New in 0.57 * Converted to a simpler frame rate counting method. * Fixed the AOA reading on the HUD. * Removed gpc from the Lib section of distribution by request of the gpc Author. The gpc license is unfortunately not compatible with the GPL. I may look for an alternative library, or just require that developers download this library separately. * First slew of changes from the MacOS porting effort contributed by "Robert Puyol" . * Support for an arbitrary number of serial ports + additional serial port output tweaks. * Serial output tweaks to make things more robust and act more like a GPS. * Portability enhancements for Borland, Solaris, and SGI. * Some internal class renaming and reorganizations. fgFLIGHT becomes FGState. fgCONTROLS becomes FGControls. * Started work on an "external" flight model so the sim can be driven from external input (serial port, network, file, etc.) * Fixed a problem that creeped in with setting the initial startup altitude. This could cause an unrecoverable bounce and you'd end up flipped on your back. Should be fixed now. * Sun now appears to grow in size as it gets very low in the horizon. * Fixed a view frustum culling bug where the scene was not accurately culled when your view was anything other than straight forward. New in 0.56 * Changed default HUD units to the more standard feet units. You can still use meters by specifying the command line option "--units-meters". * Added some initial joystick support using Steve's joystick interface class. This works great under Linux, but Steve's class now needs to be ported to Windoze and other platforms. * Also added a fall back to the GLUT joystick routines for windows (until we can find better joystick support.) * Added some initial serial port support for acting like gps and outputing nmea data such that could be fed into a flight map software package. * Miscellaneous code clean ups, portability improvements, and optimizations. * Switched to a streams based error/debug logging system that can be completely stripped out for a release build (./configure --without-logging) * Support for cygwin32 b20 compiler (latest release) * Continued progress on instrument panel * Support for starting fgfs at higher resolutions. New in 0.55 * New version of gpc (generic polygon clipping library) from http://www.cs.man.ac.uk/aig/staff/alan/software/ * Brakes (use "b" to toggle) * Added an altitude hold module to the autopilot. Lock your current altitude with "ctrl-a", "cntr-a" again will deactivate. (Also lock your current heading with "ctrl-h", and again to deactivate.) * Added a terrain following module ... "ctrl-t" to activate. * Added an autothrottle ... "ctrl-s" to activate. * Fixes so that terrain tools will work in windoze. * More STL & Compiler compatibility fixes. * Changes to use a Point3 class. * Fixed win95/98 time problem that limited fps to about 18.3 New in 0.54 * Implimented audio envelopes so that pitch of engine changes with throttle * Textured moon, and rewritten/restructured Astro code. * More optimizations and code cleanups. (Norman Vine, Bernie Bright, Charlie Hotchkiss.) * Bug fixed that was causing odd display artifacts due to a degenerate fragment being created for every tile. * Bug fixed that caused scenery generation to go bad (misplaced fclose on an invalid file descriptor.) * Code changes to support g++ 2.7 STL (from Bernie Bright) New in 0.53 * Some initial "GameGLUT" support contributed by Gary R. Van Sickle (tiberius@braemarinc.com) * Tracked down and eliminated some memory access type bugs that were causing segfaults on some platforms, with some compilers using various optimization flags. * Assorted code optimizations submitted by Norman Vine. * Renamed fg -> fgfs * Shuffled files. - Created a new directory Simulator/Airports/ to handle airport data specific tasks - Created Simulator/Object/ to handle basic rendering objects * Panel code update from Friedemann Reinhard (use --enable-panel to activate) * Contributions from Bernie Bright - Created some new classes to enable pointers-to-functions and pointers-to-class-methods to be treated like objects. These objects can be registered with fgEVENT_MGR. - File "Include/fg_callback.hxx" contains the callback class defns. - Modified fgEVENT and fgEVENT_MGR to use the callback classes. Also some minor tweaks to STL usage. - Added file "Include/fg_stl_config.h" to deal with STL portability issues. Added an initial config for egcs (and probably gcc-2.8.x). Don't have access to Visual C++ so I've left that for someone else. - This file is influenced by the stl_config.h file delivered with egcs. - Added "Include/auto_ptr.hxx" which contains an implementation of the STL auto_ptr class which is not provided in all STL implementations and is needed to use the callback classes. - Deleted fgLightUpdate() which was just a wrapper to call fgLIGHT::Update(). - Modified fg_init.cxx to register two method callbacks in place of the old wrapper functions. - The new classes in libmisc.tgz define a stream interface into zlib. I've put these in a new directory, Lib/Misc. Feel free to rename it to something more appropriate. However you'll have to change the include directives in all the other files. Additionally you'll have add the library to Lib/Makefile.am and Simulator/Main/Makefile.am. The StopWatch class in Lib/Misc requires a HAVE_GETRUSAGE autoconf test so I've included the required changes in config.tgz. There are a fair few changes to Simulator/Objects as I've moved things around. Loading tiles is quicker but thats not where the delay is. Tile loading takes a few tenths of a second per file on a P200 but it seems to be the post-processing that leads to a noticeable blip in framerate. I suppose its time to start profiling to see where the delays are. I've included a brief description of each archives contents. Lib/Misc/ zfstream.cxx zfstream.hxx C++ stream interface into zlib. Taken from zlib-1.1.3/contrib/iostream/. Minor mods for STL compatibility. There's no copyright associated with these so I assume they're covered by zlib's. fgstream.cxx fgstream.hxx FlightGear input stream using gz_ifstream. Tries to open the given filename. If that fails then filename is examined and a ".gz" suffix is removed or appended and that file is opened. stopwatch.hxx A simple timer for benchmarking. Not used in production code. Taken from the Blitz++ project. Covered by GPL. strutils.cxx strutils.hxx Some simple string manipulation routines. Simulator/Airports/ Load airports database using fgstream. Changed fgAIRPORTS to use set<> instead of map<>. Added bool fgAIRPORTS::search() as a neater way doing the lookup. Returns true if found. Simulator/Astro/ Modified fgStarsInit() to load stars database using fgstream. Simulator/Objects/ Modified fgObjLoad() to use fgstream. Modified fgMATERIAL_MGR::load_lib() to use fgstream. Many changes to fgMATERIAL. Some changes to fgFRAGMENT but I forget what! New in 0.52 * Stars added in 8 stages as sky gets darker for a smoother more realistic transition. * rewrote star loader to significantly improve load times. * Tweaked sky brightness and dawn/dusk colors. * Fixed a small problem with moon rendering. * Fog color tries to track the sky color at the center of view in sunrise and sunset situations. * Optimizations from Norman Vine * Code fixes and tweaks from Charlie Hotchkiss. * Added an --enable/disable-sound option. * Added a pause key "p" * Added command line options to specify initial position and orientation. * Added command line option to start in paused or unpaused state. New in 0.51 * Translucent menus * Various HUD intensities so you can find something that is readable for the current conditions and lighting. * Tie visibility to far clip plane & view frustum culling so reducting visibility can increase frame rates by increasing what is culled. * Fixed stupid bug with misplaced initial position. * Hopefully fixed a bug when parsing system.fgfsrc on windoze. New in 0.50 * HUD updates from Charlie Hotchkiss (ladder number rotate w/ ladder, control position indicators are back) * Only draw the PUI cursor if Mesa/Glide/Fullscreen. * Added mipmapping. * Calculate the model view transformation matrix once per tile per iteration. Then glLoadMatrixd() it for each fragment rather than calling push(), translate(), pop(). * Added a basic splash screen. * Added support for switching between fullscreen and window mode for Mesa/3dfx/glide. * added an enable/disable splash screen option * added an enable/disable intro music option * added an enable/disable instrument panel option * added an enable/disable mouse pointer option * Ground collision detection. You can now land or test for collision with any scenery surface. * Converted angle of attack scale into a radio altimeter. New in 0.49 * Managment of multiple textures * Incorporated Friedemann Reinhard's initial panel code. * Fog mode is now GL_FOG_EXP2 instead of GL_FOG_LINEAR * Build the non-shared pieces of the FG sim as static libs. New in 0.48 * Incorporated Steve Baker's PUI user interface library written entirely on top of OpenGL * Incorporated Steve Baker's Audio library which currently only supports Linux, but a win32 port is very close to being done. * Sort object fragments by material property before rendering. This will be a big help to performance when we start including objects with a wide variety of material properties and textures. * Overlapped scenery tiles to reduce the chance of an occasional floating point precission induced gaps. * Fixed a bug in zlib exposed by Borland Win32 compiler. * Impose a maximum triangle area during scenery generation so even very flat areas will get split into a few smaller sub triangles. * Fine grained (fragment level) view frustum culling. * view transformation optimizations -- Norman Vine. * Fixed polygon winding problem in scenery generation, so all tri-strips are wound counter clockwise (opengl default). New in 0.47 * Course (per tile) view frustum culling. * Added a command line option to specify --fg-root which will override $FG_ROOT * Hard coded default locations for FG_ROOT for situations when nothing is specified. Unix = /usr/local/lib/FlightGear Win32 = \FlightGear * Restructured the command line processing code so that it can process these sames comands (one per line) out of a config file. * Added a command line option to specify field of view. This is adjustable at run time using "X / x". Supporting code contributed by Norman Vine. New in 0.46: * Complete C++ re-write of the HUD section. * Miscellaneous bug fixes and tweaks. New in 0.45: * Added an option to enable/disable wireframe rendering. * Added an option to enable/disable fog/haze. * Added an option to enable/disable sky blending. * Added an option to select smooth/flat polygon shading. * Added an option to enable full-screen mode. * Added a visual frame rate counter on the HUD. (Contributed by Durk Talsma) * Autopilot updates (Jeff Goeke-Smith) * Added an option to control the number of neighboring tiles that are drawn New in 0.44: * Fixed a horible bug that cause the time to be *WAY* off when compiling with the CygWin32 compiler. * Wrap up zlib so we can conditionally compile back in normal behavior on systems that have trouble building zlib. * Minor adjustment to texture coordinate generation to reduce texture swimming. * Added a command line option to enable/disable texture maps * Minor transformation adjustments to try to keep scenery tiles closer to (0, 0, 0) GLfloats run out of precision at the distances we need to model the earth, but we can do a bunch of pre-transformations using double floats and then cast to GLfloat once everything is close in where we have less precision problems. * command line option to set starting position by airport ID * Cleaned up initialization sequence to eliminate interdependencies between sun position, lighting, and view position. This creates a valid single pass initialization path. * use already calculated LaRCsim values to create the roll/pitch/yaw transformation matrix New in 0.43: * material properties bug fixed when rendering terrain. * bug in sky color generation fixed. * bug in fog color generation fixed. * zlib on the fly decompression/compression support. * more code reorganization and clean ups. * a fixed up 30 arcsec DEM file preprocessor. World wide DEM's are available in this format. New in 0.42: * Simple autopilot heading hold contributed by Jeff Goeke-Smith * More code reorganization and clean ups. New in 0.41: * Many autoconf cleanups and tweaks * make and make install work in unix * make works for cygnus win32 (but not install yet) * make dist now works * added the Tools directory into the main source tree New in 0.40: * Gnu automake/autoconf/libtool make system * Initial texture support * Bug fixes