Doom (activity)

Doom .xo Bundle – Doom (activity).xo

Doom is a first person shooter game with content that is probably not suitable for young children, but is great fun for older ones.

Freedoom is a free software clone of Doom, based on improvements made to Doom's 3d engine with new maps and monsters.

How to install Doom bundle

Click Doom-1.xo to download Doom. Then install as usual.

This is tested working in shipping builds, not tested with rainbow security enabled, yet.

Video of Doom played on the OLPC

<youtube>9MhQ5jIj5aw</youtube>

How to install manually

The following instructions need to be run from the Terminal activity. You will need a working internet connection on your OLPC for the install only. The instructions worked on a B4 OLPC laptop running Build 650.

• Open the terminal
• Switch to the root user, by typing:

su -

...and entering the root password, if requested to.

• Then type

yum install prboom

• The download is about 18MB, so will take a few minutes.
• When you get a prompt again, type:

exit

• To run Doom, type

prboom

Changing Doom to run in full screen mode

To run in full screen mode, type:

prboom -geom 1200x900

To permanently adjust Freedoom to run in full screen mode all the time, type:

cd /home/olpc/.prboom
nano prboom.cfg

This will open the freedoom configuration file in the nano text editor. Find the two lines in the file with the words:

width         640
height        480

And change them to:

width         1200
height        900

Then type ctrl-x to exit, and type y to save your changes. Now, Freedoom should run in full screen mode when you type

prboom

Help

I installed this by downloading the .xo file and then I tried changing the graphics mode to OpenGL and now it won't start. I tried removing it and re-installing it, but it still won't start. I think my (poor choice of) settings were not reset when I did that.

Game settings (all activity settings actually) are found in your .sugar/ directory. Just remove the .sugar/default/org.laptop.doom directory to clear saved settings after you remove the activity, and then re-install.

Hint, don't try the OpenGL video mode.

See also

• The offical Freedoom homepage
• Another video of Freedoom on the OLPC
• The OLPCNews forum page about Freedoom on the xo