137 lines
5.1 KiB
Plaintext
137 lines
5.1 KiB
Plaintext
OpenTTD: OS/2 version
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=====================
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OpenTTD has been ported to work on OS/2 4.x or later (including
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eComStation). The game should work as well as it does on Windows
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or other platforms: the main issues you may encounter are graphics
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card problems, but that is really the fault of SDL.
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=========================
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USING OPENTTD FOR OS/2
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=========================
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LIBRARIES REQUIRED FOR END USERS
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--------------------------------
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SDL.DLL (SDL 1.2.7) and FSLib.dll are required to use this program:
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these can be downloaded from the Files section at
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http://sourceforge.net/projects/openttd/ - see "os2-useful.zip".
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(Note that a newer version of SDL is now available at
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ftp://ftp.netlabs.org/pub/sdl/sdl-dev-os2-2004-12-22.zip which may
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help solve some problems).
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Please note that SDL release 2005-03-30 does NOT work with OpenTTD,
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at least in my experience and the experience of a couple of other
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users. If you experience problems with OpenTTD, please try downgrading
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to SDL 2004-12-22.
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Note that to actually play the game, I have found in my own
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experience that a version of the Scitech Display Drivers or its later
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incarnation (see www.scitech.com) are necessary for it to work. If
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you have trouble with your native drivers, try the Scitech drivers
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and see if they help the problem.
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KNOWN ISSUES
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------------
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- If an error occurs during loading, the OS/2 error message window
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is not always displayed.
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A NOTE ABOUT MUSIC
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------------------
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OpenTTD includes a music driver which uses the MCI MIDI system. Unfortunately,
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due to the lack of proper MIDI hardware myself, I have been unable to test it,
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but during testing, I found that when MIDI was enabled, I got no sound
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effects. I therefore decided to DISABLE music by default.
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To enable music, start OpenTTD with the command line:
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openttd -m os2
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If I hear enough responses that both music and sound work together (it might
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just be my system), I'll have the defaults changed.
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A NOTE ABOUT DEDICATED MULTIPLAYER SERVERS
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------------------------------------------
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To start a dedicated multiplayer server, you should run the dedicated.cmd
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file. This enables OpenTTD to open up a VIO console window to display
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its output and gather any necessary input. Running "openttd -D"
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directly will result in the console not being displayed. You may
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still pass any other parameters ('-D' is already passed) to
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dedicated.cmd.
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=========================
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BUILDING THE OS/2 VERSION
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=========================
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Compiler
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--------
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Open Watcom 1.3 was used to build OpenTTD (earlier versions will
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NOT work). See http://www.openwatcom.org/ to download it. It may
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also be possible to build OpenTTD with GCC: I attempted this
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before using Open Watcom, but found the tools available for OS/2
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at the time to be a bit more tricky to get working.
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Due to complexities in my set-up, I actually used the Win32 version
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of Open Watcom to initially compile OpenTTD for OS/2. There should
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be no reason of course why the OS/2 version cannot be used, and I
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have subsequently built OpenTTD successfully this way.
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Libraries Required
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------------------
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The following libraries are required. To build zlib and libpng, I
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simply added the required files (watch out for sample programs, etc)
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to an IDE project file and built a library. Do not use the makefiles
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provided, they are not designed for Watcom (apart from SDL):
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- zlib
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http://www.zlib.org/ - contains a makefile for OS/2, but is out
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of date and uses EMX, ignore this
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- libpng
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http://www.libpng.org/ - contains an EMX/gcc makefile, ignore this
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- SDL for OS/2
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For 0.3.5, I used ftp://ftp.netlabs.org/pub/sdl/SDL-1.2.7-src-20040908a.zip -
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take SDL.dll and SDL.lib from the src/ directory. Note that 20041222 is
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out now, which is recommended for stability updates.
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If you do not wish to build the libraries yourself, pre-built versions
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can be downloaded from the Files section at
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http://sourceforge.net/projects/openttd/ - see "os2-useful.zip".
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A Note About Subversion Revision Numbers
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----------------------------------------
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The project file uses a bit of a hack to find out the SVN revision number and
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create an appropriate rev.c file. You'll need the SVN tools in your path
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(specifically, "svnversion"). If "svnversion" can't be found, a generic rev.c
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with the revision set to "norev000" will be created. To specifically force a
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version number, set the environment variable "RELEASE" to the number (eg, "0.3.6")
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-before- starting the Open Watcom IDE (which must be launched from the same shell
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session). Also, beware, as you WILL cause incompatibilities if you try to
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play a multiplayer game with a different version.
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Compiling
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---------
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To compile, open the os/os2/openttd.wpj file in the IDE and first build
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the strgen.exe target. This will build the .lng file generator, and will
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also attempt to build all the language files (plus the table\strings.h
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file which is required for openttd.exe to be built). Once strgen.exe and
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the language files are built successfully, you can build the openttd.exe
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target.
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Contact Information
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-------------------
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If you have any questions regarding OS/2 issues, please contact me
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(owen@owenrudge.net) and I'll try to help you out. For general OpenTTD
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issues, see the Contacting section of readme.txt.
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- Owen Rudge
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