This directory contains the patch file needed to update the latest release
of XDoom source to psDooM.

To apply the patch, run the following command from this directory:
patch -d ../ -p0 < psdoom-YYYY.MM.DD-patch
substituting the file's release date for 'YYYY.MM.DD'.

In order for that command to work as listed above, you must have
uncompressed and untarred the psdoom-YYYY.MM.DD-patch.tar.gz file in the
right directory.  You should have been in the directory above the 'xdoom'
directory.  In other words, the listing of the directory after extracting
the file should have looked something like this:

-rw-r--r--   1 root     root        38876 May  2 23:22 psdoom-2000.05.03-patch.t
ar.gz
drwxr-xr-x   2 root     root         1024 May  2 23:19 psdoom-patch/
drwxr-xr-x   4 200      ftp          1024 Mar  5 13:37 xdoom/
-rw-r--r--   1 root     root      1003075 Mar 13 17:49 xdoom-20000305.tar.gz

Any other configuration will require some modification of the above patch
command.

Once you apply the patch, build psDooM as you would build regular XDoom.
See the XDoom INSTALL file in xdoom/xdoomsrc/doc/ for instructions.

In addition to the programming differences, there are changes to various
XDoom Makefiles.  These changes build programs called ps-*doom rather than
*xdoom, and install the programs in
<...root directory...>/games/psdoom/
rather than in
<...root directory...>/games/xdoom/

Be sure to read the documentation in 'xdoom/psdoomdoc/' and
'xdoom/xdoomsrc/doc/'.