Get Titan Quest Running on Centos 7

For general installation instructions, follow this guide. (PDF archive)

While trying to get Titan Quest: Immortal Throne running on my son's computer, I ran into a number of debug problems. To fix the first, related to libudev.so.0 (install libgudev1 if it's not already installed):

$ sudo ln -s /usr/lib/libgudev-1.0.so.0 /usr/lib/libudev.so.0

If your application is 64-bit, then run the following:

$ sudo ln -s /usr/lib64/libgudev-1.0.so.0 /usr/lib64/libudev.so.0

The other errors were as follows. Most, if not all of them, relate to sound.

err:module:load_builtin_dll failed to load .so lib for builtin L"winepulse.drv": libpulse.so.0: cannot open shared object file: No such file or directory
err:module:load_builtin_dll failed to load .so lib for builtin L"winealsa.drv": libasound.so.2: cannot open shared object file: No such file or directory
err:mmdevapi:DllGetClassObject Driver initialization failed
err:ole:apartment_getclassobject DllGetClassObject returned error 0x80004005
err:ole:CoGetClassObject no class object {bcde0395-e52f-467c-8e3d-c4579291692e} could be created for context 0x1
err:dsound:get_mmdevenum CoCreateInstance failed: 80004005

The problem is that Titan Quest is a 32-bit application, whereas the WINE-PulseAudio system is 64-bit. That's why sound doesn't work. To fix it, install the required 32-bit libraries:

$ sudo yum install pulseaudio-libs.i686

If you experience screwed up colors and textures, check the PlayOnLinux debug log for the following error:

err:winediag:wined3d_texture_init The application tried to create a DXTn texture, but the driver does not support them

To fix it, try installing the following 32-bit package:

$ sudo yum install libtxc_dxtn.i686

See this AskUbuntu page for more information.

I also found that firewalld was blocking multiplayer connections. To allow for LAN games, open firewalld (search for firewall in GNOME), switch to the Protocols tab, and add udp as a protocol. To make this change permanent, go to the Options menu and select Runtime to Permanent.

While you're here, to allow other games (such as Diablo II) to connect through the firewall, do the same for tcp.

By default, holding down the ALT key while clicking the mouse will move the current window/application. The problem is, you need to ALT+click to pick up items in the game. To fix this problem in KDE Plasma, launch System Settings, then go to Window Management, and click the Window Actions tab. Change the modifier key from ALT to Meta. Done.

To fix this on XFCE, open Settings, browse to Window Manager Tweaks, and click the tab for Accessibility. Now change the key used to grab and move windows from ALT to something else (like Super).