map_like Regex -> Bool

Returns whether any part of the map (not the entire screen) matches Regex.

check_dlvl

Updates the current_level if Dlvl appears to have changed.

autoexplore

Mark tiles that are obviously explored as such. Things like "a tile with no unknown neighbors".

is_engulfed -> Bool

Checks the screen to see if we're engulfed. It'll inform the rest of the system about our engulfedness. Returns 1 if we're engulfed, 0 if not.