-- check for return values of *printf()
-
-- be more strict and humble when allocating memory from the stack
-
-- in textfield_width(), handle too large lines somehow
-
-- use select() polling where possible for server-client communication
-
-- may err_line store the processed line internally as it does the line count
-
-SERVER:
-
-- implement field of view / line of sight and obstacles for those on the map
-
-- is it actually useful to define map object action ids in the config file?
-
-- make shape of map (and diagonal movement penalty) configurable in config file
-
-- for game continuation, replace re-playing of whole record files with loading
- game state snapshots / save files
-
-- why does an MapObjAct id of 0 fail?
-