To save server resources, a mixed spawn area can consist of dynamic
groups and lair groups. Also the minimal distance from dynamic group to
nearest lair will be kept to prevent lairs and NPCs too close together a
bit more.
Considering the combat level ranges from live, the planet's surface has
been covered with spawn areas for various mobs and NPCs. A small as
possible count of collidables was used to save server resources while
still being able to realize the spawns.
ODB no longer uses DPL layer of Berkeley DB, persistent classes have to
implement the Serializable interface, annotations are no longer used,
use transient modifier for variables that should not be persistent.
Entity reference errors will no longer occur, however it is better to
use ids if the entity that is being referenced is stored in the db too!
(or you will have two different objects). DB is cached for 5 minutes
then it will write its log/cache to disk, transactions are no longer
used.