140 lines
4.9 KiB
Plaintext
140 lines
4.9 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-v1.1.zip".
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Version 20051222 of SDL or later is required. This can be found at
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http://sdl.netlabs.org/.
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Please note that earlier SDL releases will probably NOT work with
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OpenTTD. If you experience problems with OpenTTD, please check
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your SDL and FSLib.dll versions (both must match).
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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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Please note also that the GCC version does not currently support the MCI MIDI
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system.
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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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You can find the dedicated.cmd file in the os/os2 directory.
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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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Innotek GCC, an OS/2 port of the popular GCC compiler, was used to build OpenTTD.
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See www.innotek.de for more information. You WILL need a reasonably UNIX-like
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build environment in order to build OpenTTD successfully - the following link
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may help to set one up (although some of the links from that page are broken):
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http://www.mozilla.org/ports/os2/gccsetup.html
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Alternatively, Paul Smedley's ready-to-go GCC build environment has been known to
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successfully build the game:
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http://www.smedley.info/os2ports/index.php?page=build-environment
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To build, you should, if your environment is set up well enough, be able to just
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type `./configure' (or `sh configure' if you're using the OS/2 shell) and `make'.
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You may have to manually specify `--os OS2' on the configure command line, as
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configure cannot always detect OS/2 correctly.
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A note on Open Watcom
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---------------------
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Open Watcom C/C++ was previously used to build OpenTTD (version 0.4.x and earlier).
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However, due to advanced C++ features used in the YAPF portion of OpenTTD 0.5
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in particular, the compiler is no longer able to build the game at the moment.
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Hopefully one day Open Watcom will be able to catch up and we will be able to build
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the game once again (it's easier than getting an OS/2 UNIX-like environment set up
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in my opinion!), but until then, OpenTTD 0.5 and later can only be built with GCC.
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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/
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- libpng
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http://www.libpng.org/
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- SDL for OS/2
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ftp://ftp.netlabs.org/pub/sdl/sdl-1.2.7-src-20051222.zip used for
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0.4.7
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- Freetype
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http://freetype.sourceforge.net/
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Currently, there are no pre-built libraries available for GCC. If you manage to get
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OpenTTD working on Watcom though (do let us know if this is the case!), pre-built
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versions can be downloaded from the Files section at
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http://sourceforge.net/projects/openttd/ - see "os2-useful-v1.1.zip".
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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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Thanks to Paul Smedley for his help with getting OpenTTD to compile under GCC on OS/2.
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- Owen Rudge, 24th June 2007
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