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[DFNewb]

Can you limit the number of new dorfs per wave? Like in init or in raws or something?

[Shonai_Dweller]

Only by manually adjusting the total population limit. Raising it each time you want a few more dorfs. Not much else you can do right now.
Migrant mechanics are due to be revamped as part of the Scenarios release (might be a few years before that happens though).

[PatrikLundell]

Bumber answered you in the same thread you posted in another forum.

[doulos05]

Here is a DF Hack script from the other thread just two below this one that solves this problem.

If you are running DFHack you can use this script to automatically limit the size of immigration waves:

Spoiler (click to show/hide)

Code: [Select]

--Dynamically limit the next immigration wave
--[[=begin

max-wave.lua
============
Set the population cap to the lesser of current_pop + wave_size or max_pop.
Use with the `repeat` command to set a rolling immigration limit.

Usage examples::

    max-wave wave_size (max_pop)
   
    repeat -time 1 -timeUnits months -command [ max-wave 10 200 ]

The first example is abstract and only sets the population cap once;
the second will update the population cap monthly, allowing a
maximum of 10 immigrants per wave, up to a total population of 200.

=end]]

local args = {...}

local wave_size = tonumber(args[1])
local max_pop = tonumber(args[2])
local current_pop = 0

if not wave_size then
  print('max-wave: wave_size required')
  return
end

--One would think the game would track this value somewhere...
for k,v in ipairs(df.global.world.units.active) do
  if dfhack.units.isCitizen(v) then
   current_pop = current_pop + 1
  end
 end

local new_limit = current_pop + wave_size
 
if max_pop and new_limit > max_pop then new_limit = max_pop end

df.global.d_init.population_cap = new_limit
print('max-wave: Population cap set to '.. new_limit)


To use it, copy the code and paste it into "hack/scripts/max-wave.lua" in your Dwarf Fortress directory. You can run it directly in the dfhack console ("max-wave 20 20") to set the population cap without reloading, or use it with repeat to create a rolling population cap (like "repeat -time 3 -timeUnits months -command [ max-wave 10 200 ]" for up to 10 migrants per season) to slow down immigration to whatever rate you desire. You can probably even set it up in an init file so it's entirely automatic.