To enable use with online Bulletin Board Systems (BBSes) where users
may be disconnected unexpectedly, but would naturally want to resume
playing their same game, added support for an optional save game
path/filename to be specified on the command-line (very similar to
"-r <filename>"), except this save/restore file is:
1. automatically loaded/restored if it exists
2. automatically created when starting a new game
3. automatically updated when exiting a game for any reason
4. cannot be changed to a different path/filename by the user
Since a BBS server program can be expected to send a SIGHUP or SIGTERM
to the game process upon user disconnection (or timeout), those
signals are caught and a graceful termination will occur which saves
the current game state.
Build with ADVENT_AUTOSAVE defined to enable this option.
BUG:
The 'info' command still reports the save/suspend/pause commands as
valid, though they are not when this build option is used (same is
true of ADVENT_NOSAVE, and that doesn't apparently bother anyone).
* We are aware that the lamp currently used as the project logo is a
hurricane lamp, not a proper miner's lamp. Submissions of potential
replacement images would be welcome.
The deleted TODO said:
* We are aware that the lamp currently used as the project logo is a
hurricane lamp, not a proper miner's lamp. Submissions of potential
replacement images would be welcome.
Further research using an image search on the web reveals that there
have been miners' lamps thart visually resemble outr hurricane-lamp
images pretty closely, so we can keep using it.
Show usage when using bad parameter with ./advent
Converted magic numbers to enums for BUG(). Also bug now shows
stringify'ed version of bug enumeration (not just a number).
