Hi folk!
So, on a multiplayer server you have loads of people killing the NPCs particularly around the initial spawn point.
Could someone clarify what mechanism spawns new NPCs?
There appears to be a distinct lack of them around the initial spawn point now. 
One player mentioned that they've only seen 1 npc (a pig) in 24 hours! 
I know that NPCs do respawn in general but no idea about the specifics, maybe @red51 could write a small post here or a small info thread detailing the basics around current NPC spawning mechanics.
You can spawn more via plugin or in game console (by hand).
I would do it via plugin and define areas where e.g. there must always be 10 pigs, 10 cows, and 20 chickens then have a timer (every half hour or so) to check all NPCs and if a sufficient number is inside my defined areas, if not it would spawn more randomly inside the areas (make sure the areas are not too high because the NPCs would fall to their death on spawn 
). Unfortunately there is no .getAllNPCs method for areas so you would have to play some dirty tricks and count all the NPCs from the server (getAllNpcs(Collection<Npc>) - Method in interface net.risingworld.api.World) and check if their position is in your area by .isPointInArea() probably.
Now that you brought it up having methods in the World interface like .getAllNPCsInArea(Area) .getAllConstructionsInArea(Area) .getAllObjectsInArea(Area) .getAllVegetationsInArea(Area) etc. might be usefull for some plugin applications 
(make sure the areas are not too high because the NPCs would fall to their death on spawn )
my be getGround can help to spawn with out death.
