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I have just finished porting a remake of RoadFighter to the GCW0.

See here for original game: http://www2.braingames.getput.com/roadf/
(the original website is down as of oct-2016)
You can find a copy of the git repo here(not my patched version): https://github.com/ptitSeb/roadfighter

The following changes were made to make the game run:

1. Add X-OD-NeedsDownscaling=true to the desktop file
2. Remap the fire button from Y to A button
3. Convert ogg files to wav.

The resulting OPK is rather large because the music files are big. The original games use vorbis OGG files, but the game crashes with "Illegal instruction". I suppose the problem is in the libvorbis library. Some issue with cross compilation to MIPS. Also SDL MP3 files are not supported on the GCW0 so I had to use WAV files.

The OPK can be downloaded here: http://www.mediafire.com/file/zifq9z0on7kqzr8/roadfighter.opk

UPDATE: new OPK with ogg files. (smaller file size) https://www.mediafire.com/?he4a2tmhffg59i5


Enjoy!

What I can determine is that is crashes in Mix_LoadWAV(), which is inside SDL. I'll do some more debugging when I have time.

The resulting OPK is rather large because the music files are big. The original games use vorbis OGG files, but the game crashes with "Illegal instruction". I suppose the problem is in the libvorbis library. Some issue with cross compilation to MIPS. Also SDL MP3 files are not supported on the GCW0 so I had to use WAV files.

Hi, I ran 'ogginfo' command on the original OGG files and on some of them, it said the following error multiple times:
'Negative or zero granulepos (-1) on Vorbis stream outside of headers. This file was created by a buggy encoder'

So, I issued the following UNIX command to rewrite the OGG files' metadata, but preserving the original quality by not re-compressing the audio:
for i in *.ogg; do ffmpeg -i $i -c:a copy fixed_oggs/$i ; done

'ogginfo' utility no longer reports any errors. Note that to run this fix youtself on a UNIX system, you must install the 'ffmpeg' package.  But you don't have to, as I have included a .7z containing the new OGGs if you want to try them out, I'm curious if they fix the problem. I didn't include the .WAV files, so don't forget to copy those over too.  Fixed oggs: https://drive.google.com/open?id=0B5tSn03yRsHvTWUtS2pSV2l1cDA

'ogginfo' utility no longer reports any errors. Note that to run this fix youtself on a UNIX system, you must install the 'ffmpeg' package.  But you don't have to, as I have included a .7z containing the new OGGs if you want to try them out, I'm curious if they fix the problem. I didn't include the .WAV files, so don't forget to copy those over too.  Fixed oggs: https://drive.google.com/open?id=0B5tSn03yRsHvTWUtS2pSV2l1cDA

Nice; you should send the fix upstream to https://github.com/ptitSeb/roadfighter too