this really should have been broken down into more commits. lighting
works, maybe the location will still change. camera rotation around the
world still not working. lots of graphics work so far: updated minion
and wumpus graphics and textures--mostly finalized at this point; agent
graphics are more or less done as well; pits good; goal needs work;
fairy needs work. auto step is still backburner.
fixed bug with agent heading at the initialization of a map. now agent
always faces east when maps start. some efforts towards getting nice
textures on living wumpus and minions.
got auto step working! maybe some small variations are needed, but in
general it's done
fixed bug where buttons weren't updating properly at initialization and
at game over