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The NetHack Learning Environment
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Add an xlogfile to the generation of the ttyrecs. #316

Closed cdmatters closed 2 years ago

cdmatters commented 2 years ago

An xlogfile is a logfile that gives details of the episodes that have just passed (https://nethackwiki.com/wiki/Xlogfile). These were previously being generated in the HACKDIR (temporary var dir). By setting the SCOREPREFIX and touching the file, you can can change the path that the file (always ending 'xlogfile') is generated.

NB: There is a lock based on fnctl on the logfile. To avoid multiple nles in different trying to write to the same file (with the same savedir) we prepend the process number, like ttyrecs. For writing to same savedir within same process, an id should be added to both ttyrec and xlogfile. This can be done in future (along with relabelling ttyrec to ttyrec2).

The log file records all COMPLETED episodes (in the NetHack sense), since it derives from the features used to calculate top ten. In standard usage it should lead to one row per episode, with all ttyrecs from the same process in the same file. You can then find the ttyrec corresponding to each row (start counting at 0th row).

cdmatters commented 2 years ago

(Was review by heiner internally)