Retest with audio unchecked (frontend and game) in options, and with compiz or other forms of X11 special effects disabled.

Also system info please. (driver/card/window manager/sound system)

Done, still crashes. I also tried to switch fullscreen/window mode, change resolution. I use dualscreen setup, I tried to disable one screen. Nothing helps.

I don't use compiz/xgl/etc.

Gentoo/linux-2.6.32-gentoo-r7
Video: Nvidia 9600GT powered by nvidia-drivers-195.36.15
Sound: Realtek ALC883 powered by alsa-lib-1.0.21a
QT libs: qt-core-4.6.2-r1, qt-gui-4.6.2, qt-script-4.6.2
WM: openbox-3.4.10

Could you pastebin ~/.hedgewars/debug0.txt and glxinfo output please?

That nvidia driver - is that the proprietary one?

http://vminko.org/storage/temp/debug0.txt
http://vminko.org/storage/temp/glxinfo

Yep.

I just noticed you said you simply renamed the .12 ebuild - I assume that means you already had liblua installed or you'd think you'dve run into a problem there.

Anyway, the debug0.txt looks fine as well as the glxinfo.

Do you mind trying

gdb /path/to/hwengine /path/to/hedgewars/Data demo.31.hwd

You can use:
http://m8y.org/tmp/demo.31.hwd

Which is some short demo from last night.

If/when it crashes, run bt and give us a trace.

Also, if trace doesn't have much info, it might be best to compile w/ -g - if you can do that in the ebuild, great. Otherwise just unpack the tarball, run cmake, and then in hedgewars/ dir run:
fpc -g hwengine.pas

to generate an hwengine in that dir.

Here you go: http://vminko.org/storage/temp/gdb.log

Ok. That error isn't really the one we want.

That could simply be due to failure to open the file handle for debug0.txt which defaults to the Data dir in this case.
Now that *should* be handled more cleanly but I can't swear to it.

Please copy Data to somewhere you have write access to and rerun this test with the new path.

(that or perhaps give games group users write access to that directory)

Yeah, this time I saw the 'Loading...' window, and then it crashed:
http://vminko.org/storage/temp/gdb2.log

Huh. That's an odd one.
Mind running the full game and enabling Reduce Quality?

Then retesting?

Also if you don't mind doing a:

print Gear^

in gdb?

In this case I can start a round. But there's no sound at all (even music), despite the fact that I've enabled it in menu.
edit: I mean there is no sound in game, but I hear music in the menu.

I tried, but it doesn't seem to be affected by my hedgewars config: it still crashes, stack trace is exactly the same.

http://vminko.org/storage/temp/gdb3.log

lol. By retesting I meant exactly what you did. Ok. So it does work w/ Reduce Quality.

Weird.

As for sound. Dunno. Try turning off frontend sound/music and just leave backend active. Maybe you have issues w/ your soundcard too (like locking).

Kind of out of theories on the actual crash, there's no reason I can see for sigsegv there.

What version of fpc, and what CFLAGS did you build it with?

Wow, you are right. Now I have both music and sounds in game.

fpc-2.2.0
CFLAGS="-march=core2 -O2 -pipe"

please try with an fpc 2.2.4 or higher

huh. never tried 2.2.0 - a bit old, but not that much so. don't see it explaining the sigsegv.

Well, anyway. you have it working I guess w/ reduced quality, that's something...

sound issue presumably can be fixed by use a sound daemon like pulse or esd w/ your SDL

Recompiled using fpc-2.4.0. It doesn't crash with high quality anymore!

Doesn't the game use ALSA? I thought this kind of issues are specific for OSS. But personally I'm ok with no sounds in menu.

The game uses SDL, which *can* use ALSA.
Depends on your configuration for SDL in /etc and/or the USE flags you enabled when you built the lib.

I have both oss and alsa enabled.

Also, if the game crashes w/ 2.2.0 could you file a bug requesting a bump in the fpc dependancy for gentoo's ebuild?
Or maybe note it in the existing 0.9.13 bug, if there is one.

I retested with fpc-2.2.4. The game works fine with this version as well.

Done: http://bugs.gentoo.org/show_bug.cgi?id=313013

As noted, probably dependant on your SDL configuration (the frontend simply calls SDL_Init(SDL_INIT_AUDIO); Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 1024) ), but anyway. The one thing you might miss in 0.9.13 is the notification sound when players join your room. Useful if you're idling while waiting for people to join.

Also, sound backend wasn't changed between .12 and .13, so no new problems should be cropping up unless your system changed.

Is there a corresponding config file?

0.9.13 is actually the first version I tried.