264 lines
10 KiB
Text
264 lines
10 KiB
Text
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------- Flight Gear FAQ v0.03 14/04/1999 ---------------------
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Welcome to the Flight Gear FAQ. Here you find Questions/URL's/Tips about
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Flight Gear mainly asked in the mailing lists.
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This Document is divided into 5 sections:
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1. Distribution Questions
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2. Compiling Questions
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3. User Questions
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4. Windoze related Questions
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5. ???
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-------- Index -----------
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Section One Distribution :
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1) Where can I get the latest version of this FAQ ?
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2) What else is a must read ?
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3) Where is the latest distribution of Flight Gear... ?
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4) Where can I find the newest snapshots ?
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5) Where can I fly ?
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Section Two Compiling :
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1) Flight Gear doesn't smooth compile though configured succesfully
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2) "gpc.c" and "gpc.h" files
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3) Compiler could not find gfc/...
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4) Red Had 5.1 / 5.2 related probs
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Section Three User :
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1) Upside down after crash?
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2) Ailleron vs Rudder
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3) FG is sooo slow (1 fps).
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Section Four Windoze :
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Section Five ??? :
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========================================================================
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SECTION ONE : Distribution Questions
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1.1) Where can I get the latest version of this FAQ ?
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Ans: The latest version is stored at
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http://www.online-club.de/home/olk/progs/flightgear
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and it's updates are announced at flightgear mailing lists.
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------------------------------------------------------------------------
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1.2) What else is a must read ?
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Ans: Please also check out the "Getting started"-document which
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provides much, much detailed information.
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------------------------------------------------------------------------
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1.3) Where is the latest distribution of Flight Gear... ?
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Ans: ftp://ftp.flightgear.org/pub/fgfs/Source
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------------------------------------------------------------------------
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1.4) Where can I find the newest snapshots ?
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Ans: ftp://ftp.flightgear.org/pub/fgfs/Source/Snapshots
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------------------------------------------------------------------------
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1.5) Where can I fly ?
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Ans: In front of your monitor, hehehe...
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[FG until v0.58]:
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Curt has a nice collection of some flight-scenarios in the U.S.
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have a look at the descriptions and needed files
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http://www.flightgear.org/Places/
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There are also scenarios located at:
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ftp://ftp.flightgear.org/pub/fgfs/Scenery/
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There you find currently AZ-central, Equador, Spain, Munich (DE)
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Frankfurt (DE) can be found at
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http://people.frankfurt.netsurf.de/teddy/frankfurt.tar.gz
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Switzerland scenario at
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http://www.2sic.ch/Hoshy/flightgear.html
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[FG after v0.59 incl.]:
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Due to changes to the scenery format, which is currently v0.2,
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the old Scenery Files (see above) are not compatible to FlightGear
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v0.59 and later.
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The folowing Scenery Files are recommended instead:
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Alaska (Prince William Sounds) Scenario located at
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ftp://ftp.flightgear.org/pub/fgfs/Scenery/new-format-demo.tar.gz
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You also need the fgfs-base-0.59.tar.gz package with new graphics
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ftp://ftp.flightgear.org/pub/fgfs/Shared
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------------------------------------------------------------------------
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========================================================================
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SECTION TWO : Compiling questions
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For the time beeing more Unix/Linux related.
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2.1) Flight Gear doesn't smooth compile though configured succesful
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Ans: The fgfs-sources contain some Scenery Tool Kits beeing yet beta,
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they use libraries written by others so there is often some
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code/makefile tweaking needed. But this doesn't matter since
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the Flight Gear executable is then already compiled.
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Just make install from toplevel Makefile directory
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and up you go...
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-----------------------------------------------------------------------
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2.2) "gpc.o" and "gpc.h"
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Can anyone advise me on what to do with the gpc.c and gpc.h files.
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I retrieved them OK after "configure"reported that they were needed.
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But, I don't know what I'm supposed to do with them.
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Ans: Flight Gear's Makefile expects libgpc to be on your System.
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Try this: gcc -c gpc.c
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ar cru libgpc.a gpc.o
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Then copy libgpc.a to some place that your compiler knows about such
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as /usr/local/lib, and then try compiling again. A better idea would be
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to set LIBRARY_PATH to point to the location where you installed
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the libgpc.a file instead of dropping it into a system-wide library
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directory.
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Caveat Emptor:
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One word of warning to Linux / Unix users. I recently discovered
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that the gnu pascal compiler is also called "gpc" and comes with a
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libgpc.a I know this has caused confusion on the part of at least one
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or two people.
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-------------------------------------------------------------------------
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2.3) compiler could not find gfc/...
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e.g. main.cxx:32: gfc/gshapefile.h: No such file or directory
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main.cxx:30: gfc/gadt_polygon.h: No such file or directory
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main.cxx:31: gfc/gdbf.h: No such file or directory
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main.cxx:32: gfc/gshapefile.h: No such file or directory
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there is no gadt_polygon.h on my system. What library does it belong to ?
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Ans: This is part of the GFC library it is not needed to run FlightGear
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as it is part of the beta Scenery Tool Kit
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GFC -- Geographic Foundation Classes library
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http://www.geog.psu.edu/~qian/gfc/index.html
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--------------------------------------------------------------------------
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2.4) Red Had 5.1/5.2 related problems
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I quickly ran into problems with the basic_string library. (see undefined ref.)
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c++ -g -O2 -L/usr/local/lib -L/usr/X11R6/lib -o testbucket
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testbucket.o../../Lib/Bucket/libBucket.a -lmtestbucket.o: In function
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FGBucket::gen_base_path(void)':/usr/include/g++/std/bastring.h:75: undefined
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reference to Basic_string<char,string_char_traits<char>,
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__default_alloc_template<true, 0>>::Rep::clone(void)'collect2: ld returned 1
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exit statusmake[2]: *** [testbucket] Error 1
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Ans: I ran into the same problem on my RedHat 5.2 system (brand new).
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After some searching I found out that it's got to do with a 'bug' in
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the stdlibc++libraries. I picked up libstdc++-2.9.0-2.i386.rpm,
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installed it and FGFS compiled just fine (after some other problems
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with gfc, I had to pick up the one from the fgfs site). However, some
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other packages must have the libstdc++-2.8 libraries....
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Ans: I also solved it with the 2.8 libraries by including
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/usr/include/g++/std/bastring.cc into the example programs.
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I believe this can be done since it's a template.
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==========================================================================
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SECTION THREE : User Questions
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3.1) Upside down after crash ?
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After beeing crashed on the ground the navion continues to fly
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upside-down and it stucks at almost groundlevel,
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(like cruse missile ;-) flying with a reverse heading as before
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and "balancing" left and right. The only solution seems to be
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to give full throttle and then at +80-90 kts it can move up by
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pressing one of the "elevator arrows" like a rocket doing a loop.
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But hey, that's nerving bc the loop is allways to short and the
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responding time of navion (correcting the "roll") is also to short,
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which results in crash so you have to re-throttle again.
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Ans: In his infinite wisdom the FlightGear GrandMaster decided
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that planes were to valuable to allow them to be destroyed
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by novice pilots who seemed to crash alot.
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The result of this as you have noticed is that
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with a little practice an ingenuity you can trim the ship
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to fly inverted along the ground.
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The trick to learn is to roll back to normal (non inverted)
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do this by nursing the elevator to get to about 500 feet or so
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and use the aierlons to snap roll 180*.
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This is all good avionics except for the plane not destroying itself.
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Remember the controls work in reverse when you are inverted
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and keep that airspeed up !!!
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---------------------------------------------------------------------------
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3.2) Ailleron vs Rudder
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What's the difference. Both help the plane to turn, that i did understand
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Ans: There is a bit of info on aileron vs. rudder here:
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http://www.arundel.net/xplane/html/crosswind.html
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http://www.monmouth.com/~jsd/how/
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---------------------------------------------------------------------------
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3) FG is sooo slow (1 fps), though i got hardware acceleration like
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Voodoo/Voodoo2 etc... What's the reason ?
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Ans: Flight Gear supports hardware acceleration, but it seems not
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to be activated. Even a P-400 goes berzerk using software rendering.
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First check out if you have MESA with glide support.
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Linux Users enter "make linux-glide" to compile Mesa
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Check out your environment variables, whether you use soft or hard-ware
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rendering. Here an example that should work :
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You have to tell Mesa to use fullscreen
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MESA_GLX_FX=fullscreen
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You also must set the appropriate Voodoo vars, here is for Voodoo2
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the Voodoo1 vars may slightly differ.
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SSTV2_BGAMMA=1.00
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SSTV2_FASTMEM_RAS_READS=1
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SSTV2_FASTPCIRD=1
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SSTV2_GAMMA=1.00
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SSTV2_GGAMMA=1.00
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SSTV2_GRXCLK=95
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SSTV2_RGAMMA=1.00
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SSTV2_SCREENREFRESH=60
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SSTV2_SWAP_EN_WAIT_ON_VSYNC=0
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SSTV2_VGA_PASS=0
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The Voodoo vars can be obtained at:
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http://www.bahnhof.se/~engstrom/e_3dfxvars.htm
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Another good tool is glide-control to set the env. vars, go get it at:
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http://www.ling.ed.ac.uk/~oliphant/gc
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Check also the help-startup-screen of Flight Gear:
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fgfs --help
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===========================================================================
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Oliver Delise Maintainer of FAQ
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Please send any comments/suggestions/flames or beer to delise@rp-plus.de
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