These changes include storing monsters on shutdown, storing dead
characters and monsters, etc. Also fleshed out the MonsterManager's
internals a bit.
(cherry picked from commit af982710f6de050c09ef503cf2f8e1c9fdd34979)
This is my solution for handling inheritance via lua. The Entity class is
only a base class, so the entity API is designed to be copied from, rather
than used directly.
linit.c: It should be noted that the Entity API must always be placed
before the utilizing child APIs. I don't know about how lua handles things
internally, but I'm assuming that this is the case.
There's no real meat in the API code yet, since that's just busy-work.
Right now I feel beter about writing the connective tissue. This case
could aslo extend to the waypoint and monster APIs.
The waypoint system had some API and class methods removed for brevity.