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'''Infestations''' are an [[event]] and a serious threat in which a number of [[hive]]s are spawned, alongside [[insectoid]] defenders. They can happen randomly or can be caused by a [[quest]]; quests will warn you if this is an outcome. Infestations can also occur upon entering rooms in an [[Quests#Ancient_Complex|ancient complex]]; you will get no specific warning for this quest. | '''Infestations''' are an [[event]] and a serious threat in which a number of [[hive]]s are spawned, alongside [[insectoid]] defenders. They can happen randomly or can be caused by a [[quest]]; quests will warn you if this is an outcome. Infestations can also occur upon entering rooms in an [[Quests#Ancient_Complex|ancient complex]]; you will get no specific warning for this quest. | ||
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+ | Defeating an infestation grants a {{+|4}} ''Defeated insect hive'' [[mood]] buff to all pawns on the map. This buff lasts 10 days and stacks up to 5 times. | ||
== Natural Infestations == | == Natural Infestations == | ||
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[[File:PSA INFESTATIONS.PNG|350px|thumb|right|Blue squares show an area with a chance of infestations spawning.]] | [[File:PSA INFESTATIONS.PNG|350px|thumb|right|Blue squares show an area with a chance of infestations spawning.]] | ||
[[File:PSA INFESTATIONS_2.PNG|225px|thumb|right|Making 1x1 squares will usually eliminate bugs.<br>But if a 1x2 area has a ''single'' mountain roof - regardless if the other tile is mountain or not - then it can spawn infestations.]] | [[File:PSA INFESTATIONS_2.PNG|225px|thumb|right|Making 1x1 squares will usually eliminate bugs.<br>But if a 1x2 area has a ''single'' mountain roof - regardless if the other tile is mountain or not - then it can spawn infestations.]] | ||
− | Natural infestations require an area larger than 1x1, where at least one tile has the [[overhead mountain]] roof, within 30 tiles of a colony [[structure]]. They are centered around a single "valid" tile, which must have a temperature higher than | + | Natural infestations require an area larger than 1x1, where at least one tile has the [[overhead mountain]] roof, within 30 tiles of a colony [[structure]]. They are centered around a single "valid" tile, which must have a temperature higher than -17°C (1.4°F). Temperatures under -8°C (17.6°F) will gradually reduce the spawn chances, as does light. |
[[Hive]]s and [[insectoid]]s will spawn within a given radius, regardless of whether those tiles are valid. A hive does not have to spawn on an infestation's center point. The initial size of an infestation is based on [[raid points]], so infestations will get bigger as the game progresses. If the size of the event is larger than the "valid" space, it will happily expand to appear in nearby "invalid" areas, even if those areas are not directly connected. | [[Hive]]s and [[insectoid]]s will spawn within a given radius, regardless of whether those tiles are valid. A hive does not have to spawn on an infestation's center point. The initial size of an infestation is based on [[raid points]], so infestations will get bigger as the game progresses. If the size of the event is larger than the "valid" space, it will happily expand to appear in nearby "invalid" areas, even if those areas are not directly connected. | ||
− | If generated from a | + | If generated from a quest, Infestations may spawn outside in the open. |
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+ | ===Preventing Spawn=== | ||
+ | When spawn proofing a base, be thorough - even a single warm tile can cause a full infestation. If there is ''any'' valid tile, infestations can spread nearby into seemingly safe areas, even if there is a wall many tiles thick between. | ||
− | + | As they require more than 1x1 of overhead mountain, you only need to build walls every second square. Only walls are capable of stopping infestations; columns and doors do not work. Note that an overhead mountain square next to an open "thin roof" area is also a valid spawn point. | |
=== Behavior === | === Behavior === | ||
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They will randomly dig at stone and structures while wandering around their hives, potentially breaching into new areas. | They will randomly dig at stone and structures while wandering around their hives, potentially breaching into new areas. | ||
− | If any of the insectoids are downed or damaged, the entire infestation will go after colonists on the map, attacking and breaking down structures in the | + | If any of the insectoids are downed or damaged, the entire infestation will go after colonists on the map, attacking and breaking down structures in the progress. Even if outside [[raider]]s or other factors (like hypothermic slowdown) down them, they will be aggressive. If insectoids don't see hostiles within 100 tiles, they will give up and return to their hives. |
If the hives and insectoid colony are left intact, they will reproduce, progressively growing more numerous. But if all megaspiders or spelopedes are killed, the hive(s) will deteriorate due to lack of maintenance. | If the hives and insectoid colony are left intact, they will reproduce, progressively growing more numerous. But if all megaspiders or spelopedes are killed, the hive(s) will deteriorate due to lack of maintenance. | ||
{{clear}} | {{clear}} | ||
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==Other infestations== | ==Other infestations== | ||
These events are called "infestations", but do not generate [[hive]]s, meaning they do not share the behavior as shown above. They are immediately hostile to colonists and will attack like [[raider]]s do. | These events are called "infestations", but do not generate [[hive]]s, meaning they do not share the behavior as shown above. They are immediately hostile to colonists and will attack like [[raider]]s do. | ||
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===Too Deep: Infestation=== | ===Too Deep: Infestation=== | ||
Insectoid infestations can spawn from digging from a [[deep drill]]. They don't seem to appear outside of active digging. Insectoids, but not hives, will pop out around the drill's area. These do not have the overhead mountain requirement like regular infestations. However, they are often smaller in number, and are unable to reproduce due to the lack of hive. | Insectoid infestations can spawn from digging from a [[deep drill]]. They don't seem to appear outside of active digging. Insectoids, but not hives, will pop out around the drill's area. These do not have the overhead mountain requirement like regular infestations. However, they are often smaller in number, and are unable to reproduce due to the lack of hive. | ||
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== Strategies == | == Strategies == | ||
{{See also|Defense tactics#Infestations}} | {{See also|Defense tactics#Infestations}} | ||
− | Infestations are most threatening in mountain bases, as they can spawn practically anywhere inside your base. | + | Infestations are most threatening in mountain bases, as they can spawn practically anywhere inside your base. In other bases, they are much less harmful - around a normal level threat. When fighting an infestation always ensure you ''completely annihilate every hive''. If even one is left, insectoids can keep spawning and leave you back where you started. |
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− | + | Since insectoids do not attack creatures while sleeping, it is possible to haul materials in and out of the area near their nests at night, including flammable material. This is however extremely risky, since attacking one of them, or doing construction near the insectoids, will wake them up. They also wake up when their individual need for rest has been filled, so be prepared (with all items staged in a nearby stockpile) and act quickly once they're asleep. | |
===Melee block=== | ===Melee block=== | ||
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Insects should die of [[heatstroke]] before they breach through 2-3 layers of door. | Insects should die of [[heatstroke]] before they breach through 2-3 layers of door. | ||
− | It is important to note that [[temperature]] is usually what kills insects, not the fire itself. Throwing | + | It is important to note that [[temperature]] is usually what kills insects, not the fire itself. Throwing moltovs outdoors is unlikely to be helpful. Insects can walk past a burning [[wood floor]] with minimal damage, and even a direct molotov hit does not do much damage. Rather, it is the {{Temperature|300}} heat that ignites the entire infestation and causes [[heatstroke]]. An area must be "[[indoors]]" in order to receive any sort of temperature change. |
===Insect AI=== | ===Insect AI=== | ||
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===Taming=== | ===Taming=== | ||
− | If you destroy all hives of an infestation, then any insects that are [[downed]] will become | + | If you destroy all hives of an infestation, then any insects that are [[downed]] will become neutral. [[Megaspider]]s are an advanced trainability [[animal]] that can be tamed without a manhunter chance. |
[[Category:Game mechanics]] | [[Category:Game mechanics]] |