issues VS server

That is waay too old, try CMangos (https://github.com/cmangos/issues/wiki/Detailed-installation-guide-for-Microsoft-Windows) or VMangos (https://github.com/vmangos/wiki/wiki/Compiling-on-Windows)

I think this would be fairly simple to do on an emulator like vMangos. https://github.com/cmangos/issues/wiki/Creature_template

This enables grouping creatures all over the world into a hierarchy and naming the more robustly, than linkage and pooling. Back in the day, blizzards spawn groups were limited to 10 spawns per group, which was detailed in many blue posts and can be seen to this day in many zones on classic (cough Un'Goro rich thorium veins). It also brings conditional spawns to cMaNGOS for the first time, which enables things like Archimonde or Malacrass spawning only once a certain condition is met. I have prepared a wiki page where anyone can learn about the new features: https://github.com/cmangos/issues/wiki/spawn_group

setup instructions

There's also a good set of documentation for building it from scratch as well: https://github.com/cmangos/issues/wiki/Installation-Instructions

https://github.com/cmangos/issues/wiki cmangos should be the closest make sure to view 1.12

For vanilla: https://github.com/mangoszero/server

iirc from looking at the mangos db, it's hardcoded to two factions. Here is the mangos source code, btw. https://github.com/mangoszero/server

From my own research into the ManGOS source code, what others have said about 'tiles' or 'regions' is accurate. The map is broken into areas (Not organic like Elwynn Forest or Orgrimmar, but regular squares of set size which may overlap in-game zones). Every object is contained within those areas (Interactables like ore and herbs, NPC's, instance portals, etc) The server itself has a few threads running that handle processing message queues from clients (Client clicked an object, bought an item, attacked an NPC, etc). If you take a look Here you can see every single OpCode that the server can handle (what generates these varies, I'll leave that exploration to you) But generally if you want to know HOW something is handled, follow the OpCodes.