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Editing v0.34:Immigration
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{{quality|Exceptional|21:11, 20 August 2010 (UTC)}}{{av}}{{buggy}} | {{quality|Exceptional|21:11, 20 August 2010 (UTC)}}{{av}}{{buggy}} | ||
− | Immigration can occur at any time once per season. Smaller migrant waves of 2 to 10 | + | Immigration can occur at any time once per season. Smaller migrant waves of 2 to 10 seem typical in early seasons, followed by a large wave in the low double digits in the second Spring, one year after embark. It may be the case that the first 2 migrant waves are special and possibly generated out of thin air, like all waves used to be. Even if your parent civilization is [[extinct]], two waves will still show up. Each group of migrants will often include domestic animals, either as a pet or unclaimed livestock. Be prepared with adequate [[food]], [[alcohol|drink]], and [[bed]]s, among other things. Max wave size reported to date is 77.<sup>[http://www.reddit.com/r/dwarffortress/comments/q580c/hole_shit/ Source]</sup> |
− | Migrants will | + | Migrants will have skills that match your fortress' needs: Migrants with skills your fortress uses a lot or skills that your fortress doesn't have at all are more likely to show up at your gates. Important skills (mining, food production, and basic crafting, according to Toady) are weighed more heavily than other skills.<sup>[http://www.bay12games.com/media/Dwarf_Fortress_Talk_12.mp3 Source]</sup> |
− | Migration waves are generally a good thing | + | Migration waves are generally a good thing-- if you're prepared for them. |
− | == Labor | + | == Labor preference bug == |
− | Each migrant can arrive with a wide collection of often unrelated skills, far greater than possible with one of the [[starting build|starting 7 dwarves]], and [[experience]] levels as high as Legendary. | + | Each migrant can arrive with a wide collection of often unrelated skills, far greater than possible with one of the [[starting build|starting 7 dwarves]], and [[experience]] levels as high as Legendary. |
Any and all skills might be represented, including obscure military skills (like [[blowgunner]]), high levels of one or more [[social skill]]s, [[crutch walker]], [[concentration]] and others. It's even possible to have dwarves with skills that may not be obtainable by other means, like [[military tactics]] or [[tracker|tracking]]. | Any and all skills might be represented, including obscure military skills (like [[blowgunner]]), high levels of one or more [[social skill]]s, [[crutch walker]], [[concentration]] and others. It's even possible to have dwarves with skills that may not be obtainable by other means, like [[military tactics]] or [[tracker|tracking]]. | ||
− | + | Immigrants may have high skills in certain [[labor|labors]] without actually having them enabled in their labor preferences. This leads to dwarves either doing jobs from an area they are not labeled for or no work at all. For example, an adequate cheese maker (with the cheese making labor turned on) may also have the skill bone carving on "high master", albeit turned off in his preferences. The dwarf in question is listed as a bone carver on screen and in the [[status]] tab, but will only perform the cheese making labor. Individually checking each immigrant for skills and labor preferences is the only workaround so far. But the use of programs such as [[utilities|Dwarf Therapist]] can greatly decrease the time taken to check each dwarf's skills. | |
− | + | As of v34.04, migrants may arrive with all labors except hauling, cleaning, recovering wounded, and caring for wounded disabled, depending on the settings one has entered into data/[[init.txt]]. | |
== Historical migrants == | == Historical migrants == | ||
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==Limiting/preventing immigration== | ==Limiting/preventing immigration== | ||
− | If the fortress population exceeds the population cap when the dwarven [[liaison]] is visiting he will note that you don't want any more dwarves. On his safe return to the dwarven homeland | + | If the fortress population exceeds the population cap when the dwarven [[liaison]] is visiting he will note that you don't want any more dwarves. On his safe return to the dwarven homeland he then will see that no migrants are sent that year. So you can stop immigration by setting the POPULATION_CAP option in [[d_init.txt]] to a number lower than your current population, the change will only take effect after the dwarven caravan visits so you may get up to three waves of migrants before the change takes effect.{{Verify}} |
− | The first two immigrant waves are hardcoded so you will always receive them, and if you have fewer than 4 dwarves POPULATION_CAP is ignored | + | The first two immigrant waves are hardcoded so you will always receive them, and if you have fewer than 4 dwarves POPULATION_CAP is ignored {{Verify}}. The number of migrants depends on the [[wealth|created wealth]] of your fortress and so is affected by your dwarves activities. Note that if your fortress should ever become a mountainhome, you will receive an additional migration wave with the promotion, regardless of your population cap. The number of migrants is not affected by how far below the population cap your fortress was. One dwarf short, or twenty - it's all the same. |
− | It is worth noting that you need a certain minimum population size before any of your dwarves will experience [[strange mood]]s. Additionally, POPULATION_CAP | + | It is worth noting that you need a certain minimum population size before any of your dwarves will experience [[strange mood]]s. Additionally, POPULATION_CAP still allows babies to be born. You will need to alter BABY_CAP in order to change it. |
To reiterate, '''the population cap is not a hard limit on the number of dwarves in your fortress'''; It is a soft cap on immigration that only is checked when a liaison successfully reports back to your home civ. If a player is as little as 1 dwarf under their population cap when the liaison leaves, they will be eligible for a full year of normal immigration. As such, it is recommended that players set their population cap at 20-30 dwarves below the number of dwarves they actually want in their fort. | To reiterate, '''the population cap is not a hard limit on the number of dwarves in your fortress'''; It is a soft cap on immigration that only is checked when a liaison successfully reports back to your home civ. If a player is as little as 1 dwarf under their population cap when the liaison leaves, they will be eligible for a full year of normal immigration. As such, it is recommended that players set their population cap at 20-30 dwarves below the number of dwarves they actually want in their fort. | ||
− | There is | + | There is an open bug where it seems that for some people POPULATION_CAP doesn't work at all.{{Verify}}{{Bug|2922}} |
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==Immigration mechanics== | ==Immigration mechanics== | ||
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==Migrant wave sizes== | ==Migrant wave sizes== | ||
− | The first two migrant waves have a minimum size of 1 | + | The first two migrant waves have a minimum size of 1 and a maximum size of 10. The size of these waves are unaffected by fortress wealth. |
The third migrant wave and on are influenced by the [[wealth|created wealth]] of the fortress, with more wealth attracting more immigrants (more research is needed to determine specifics). Specifically, they're influenced by the fortress wealth as reported by the last outgoing dwarven [[caravan]]. Wealth created after the caravan leaves has no influence until the next year's caravan leaves. If the caravan fails to make it out then the fortress' wealth is not reported. The dwarven [[liaison]] does not report on fortress wealth, in those circumstances where the liaison makes it out but the caravan doesn't. | The third migrant wave and on are influenced by the [[wealth|created wealth]] of the fortress, with more wealth attracting more immigrants (more research is needed to determine specifics). Specifically, they're influenced by the fortress wealth as reported by the last outgoing dwarven [[caravan]]. Wealth created after the caravan leaves has no influence until the next year's caravan leaves. If the caravan fails to make it out then the fortress' wealth is not reported. The dwarven [[liaison]] does not report on fortress wealth, in those circumstances where the liaison makes it out but the caravan doesn't. | ||
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One factor which is known to affect migrant wave size is the total size of your fortress's {{k|u}}nits list (all 4 categories), which consists of dwarves, invaders, merchants, and animals which either died or currently live at your fortress. As this number increases, the maximum size of migrant waves will be reduced: starting at a local population of 1000, migrant wave sizes are limited to 10, and at subsequent levels of 1300, 1600, 1800, 2000, 2200, 2400, 2600, 2800, and 2900, the limit is decreased by 1, and once you reach a local population of 3000 you will cease to get migrants at all. | One factor which is known to affect migrant wave size is the total size of your fortress's {{k|u}}nits list (all 4 categories), which consists of dwarves, invaders, merchants, and animals which either died or currently live at your fortress. As this number increases, the maximum size of migrant waves will be reduced: starting at a local population of 1000, migrant wave sizes are limited to 10, and at subsequent levels of 1300, 1600, 1800, 2000, 2200, 2400, 2600, 2800, and 2900, the limit is decreased by 1, and once you reach a local population of 3000 you will cease to get migrants at all. | ||
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==Adventure mode== | ==Adventure mode== | ||
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Also, some migrants will be incorrectly listed as babies or children, when they are not in the expected age range for those categories. This will automatically fix itself when they have their next birthday. Some baby migrants may have future birth dates. {{Bug|3945}} | Also, some migrants will be incorrectly listed as babies or children, when they are not in the expected age range for those categories. This will automatically fix itself when they have their next birthday. Some baby migrants may have future birth dates. {{Bug|3945}} | ||
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{{Category|Dwarves}} | {{Category|Dwarves}} |