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[Frogwarrior]

So, I'm about 3 years into my fort, and for the last year or so it's been really quite, creature-wise, As in, the entire complement of the underground creatures I encountered was.... one zombie gremlin. (And my second Forgotten Beast, but whatever.) Whereas the first couple years was a cavalcade of troglodytes, a couple trolls, zombie troglodytes, giant toads, zombie trolls, etc. Surely the caverns aren't, like, depleted after only two years? I've explored all of the first two cavern levels; the third is all watery though.

[Hyndis]

Yes, it is possible to slaughter all local wildlife.

[celem]

theres a population cap built into creature raws. 

basically theres a finite number of these things.  one spawns or enters the map and the population total decreases by one.  if it leaves again it is re-added to the population.  if you intervene and kill/cage it it is not.

when the population hits 0 you have effectively extincted them in your local area.  This is most usually seen with surface critters and overhunting but also applies to underground guys.

You can increase the populations of these creatures by altering the entry in question (though my memory fails me and i dont recall exactly where this is).  Such an alteration may require regen of the world to take effect, im not certain.

The raw entry in question looks something like this:

population_count:number:number

where the second number is the total pool of creatures and is therefore the number you want to increase.

Might be someone will post here with the specifics such as the exact tag and its location.  If not youd be most likely to get the answer you seek in the modding section

[Hyndis]

http://df.magmawiki.com/index.php/Creature_token#P

POPULATION_NUMBER    min:max    The minimum/maximum numbers of how many of these creatures can show up on a map per year.



Presumably if you crank those numbers up to absurdly high values there could be more population available, however it seems that you can run out of creatures, even for vermin!

Ever run out of fish or turtles? Even case spiders vanish after a while.

[SmokedRWA]

Can these numbers be jacked up and still work without having to gen a new world though?

[Hyndis]

Can these numbers be jacked up and still work without having to gen a new world though?

No, you will need to generate a new world.

[Frogwarrior]

Well, within a day of the year rolling around, a giant olm and two troggos walked in. Guess it's a yearly thing then. Phew, I was almost worried that there wouldn't be enough Fun around here!

[Skid]

Yeah, undead draws from an unlimited pool of creatures.  If none of them are showing up either then it isn't population that is your problem.

[Toksyuryel]

theres a population cap built into creature raws. 

basically theres a finite number of these things.  one spawns or enters the map and the population total decreases by one.  if it leaves again it is re-added to the population.  if you intervene and kill/cage it it is not.

That's likely the bug. My understanding of the pop cap is that it's simply to prevent them from having so many simultaneous members that it begins to bog down the game, not to limit the total number that can ever have existed.

[Namfuak]

theres a population cap built into creature raws. 

basically theres a finite number of these things.  one spawns or enters the map and the population total decreases by one.  if it leaves again it is re-added to the population.  if you intervene and kill/cage it it is not.

That's likely the bug. My understanding of the pop cap is that it's simply to prevent them from having so many simultaneous members that it begins to bog down the game, not to limit the total number that can ever have existed.

One of the numbers governs the total number at one time on the map.  Also, I remember reading somewhere that it wasn't a permanent cap, but a yearly one.

[Hyndis]

There is a permanent cap. I do long term fortresses, and with about a dozen hunter or soldiers I can entirely depopulate the area. Nothing ever spawns after I kill off the last creatures.

[MiniMacker]

There is a permanent cap. I do long term fortresses, and with about a dozen hunter or soldiers I can entirely depopulate the area. Nothing ever spawns after I kill off the last creatures.

POPULATION_NUMBER    min:max         The minimum/maximum numbers of how many of these creatures can show up on a map per year.

The wiki might be incorrect?

[SmokedRWA]

From personal experience you can definitely hunt a species into extinction as on a previous fortress I captured some 50 gorillas and then wild gorillas simply stopped showing up even after I tamed and butchered about 40 of them ( I kept the ones with the desirable traits for breeding purposes)

[Crossroads Inc.]

I may have done something similar, I have about 10 Trogs in cages and havn't got a new trog in over a year, Elkbirds are also rareKLilling them off seems to bring more, but if you cpature them they seem to stop.

[orbcontrolled]

Isn't it possible to set things to unnumbered? I seem to recall that vermin and

Spoiler (click to show/hide)

demons

get that treatment.