Editing Hemogen pack

{{Biotech}}{{infobox main|food
| name = Hemogen pack
| image = HemogenPack a.png
| description = A package of refined hemogen in a specialized container that prevents spoilage. Hemogenic humans can consume it to restore their internal hemogen stores. It can be administered via an operation to reverse blood loss.
<!-- Base Stats -->
| type = Food
| type2 = 
| hp = 60
| deterioration = 5
| marketvalue = 5
| mass base = 0.5
| flammability = 0.7
| stack limit = 10
| path cost = 14
<!-- Ingestion -->
| taste = 
| max num to ingest at once = 
| nutrition = 0.1
<!-- Technical -->
| defName = HemogenPack
| preferability = DesperateOnly
| thingCategories = Foods
| tradeTags = 
| page verified for version =
<!-- Creation -->
| production facility 1 =  
| product amount = 
| work to make = 
| skill 1 = 
| resource 1 = 
| resource 1 type = 
| resource 1 amount = 
}}
'''Hemogen packs''' are a type of [[food]] added by the [[Biotech DLC]]. It acts as a form of blood that can be used for blood transfusions, or consumed by those with the [[Genes#Hemogenic|Hemogenic]] gene to restore their [[Hemogen]] need.

== Acquisition == 
Hemogen packs can be extracted from non-[[Genes#Hemogenic|hemogenic]] [[human]]s with the ''Extract Hemogen Pack'' operation. This takes {{ticks|500}} of work and increases their [[blood loss]] by 45%; if blood loss exceeds 100%, then the pawn will die. Unlike most other operations, it does not consume medicine or [[Anesthetic|anesthetise]] the subject. It does still provide [[Medical]] experience however.

This operation is considered a violation for [[faction]] relations, when done on a guest or ally.  Extracting [[Hemogen|hemogen]] from a [[prisoner]] from a hostile faction lowers reputation by 1.

Prisoners can be designated to have extraction operations automatically queued up when their blood loss reaches 0% via the [[Prisoner#Hemogen farm|Hemogen farm]] interaction option.

== Summary ==
Hemogen is a packaged form of blood that can be extracted and implanted to alter a human pawn's [[blood loss]]. 

Any pawn can consume one for a measily {{P|Nutrition}} [[nutrition]]. Those without either a Hemogen need, the [[Cannibal (Trait)|Cannibal]] trait, or a pro-[[Ideoligion#Cannibalism|Cannibalism]] ideoligion{{IdeologyIcon}} get a {{--|5}} ''Ingested hemogen pack'' [[mood]]let. This moodlet lasts 5 [[time|days]] and stacks up to 5 times. [[Conceited noble]]s{{RoyaltyIcon}} also dislike consuming hemogen packs, and will receive a {{Thought|desc=That meal was below my station. My title's formal requirements should always be respected.|label=Ate low-class food|value=-8|duration=1}} upon consumption. Note that consuming a pack in this way will not restore any blood loss.

When consumed by [[Genes#Hemogenic|Hemogenic]] pawns, each pack also satisfies the [[Hemogen]] need by {{+|20}}. This is worth 2 days of blood for pawns with the [[Genes#Hemogen drain|Hemogen drain]] gene, including [[Sanguophages]], and 10 days for those who just have [[Genes#Hemogenic|Hemogenic]].

Pawns will automatically consume hemogen packs to reach their target hemogen level if the toggle on their hemogen gizmo is enabled. See [[Hemogen#Hemogen_total|Hemogen]] for details.  

Hemogen packs do not rot, only [[deteriorate]] by being left outdoors or in otherwise rough conditions.

Hemogen packs are also used in the construction and fueling of the following [[deathrest]] buildings:
{{Ingredient List|noCollapse=1}}

=== Blood transfusion ===
{{Stub|section=1|reason=1) How much hemogen does it restore to hemogenics and is that reduced if they also have blood loss? 2) Occasionally see them perform the surgery with 2 packs. Incorrect description? Bug? Restoring 70% bloodloss in one operation?}}
{{Quote|Use hemogen packs to reduce the effects of blood loss. Each hemogen pack used recovers 35% blood loss. The operation will also restore hemogen to hemogenic individuals.|Operation description}}
Hemogen packs can be used to perform the "''blood transfusion''" operation, which restores a pawn's [[blood loss]]. The operation consumes {{icon small|hemogen pack||1}} hemogen pack, takes {{ticks|800}} of work, and restores 35% blood loss. This surgery does not require medicine or a minimum [[Medical]] skill, does not [[Anesthetic|anesthetise]] the subject, and always succeeds.

Note that the 35% blood loss recovered is less than the 45% lost from creating the pack in the first place.

== Analysis ==
Hemogen packs are not made for emergency transfusion. By the time the pack is brought and installed, a doctor could have used 1-2 doses of [[medicine]] to stop most of the bleeding. In addition, tending can be done on the field, while operations must be done on a bed. Transfusions are mostly helpful to cure extreme blood loss, allowing pawns to become conscious faster.

Hemogen farms have a niche in increasing Medical experience. Make the operation as slow as possible, such as turning off the [[light]]s, to gain more XP. You may want to manually order operations instead of using the "Hemogen Farm" setting, so you can control which pawn is trained.

Compared to [[Genes#Bloodfeeder|bloodfeeding]], hemogen packs give the same base Hemogen and blood loss, but do not upset pawns or cause pain.
* Bloodfeeding is somewhat faster. A doctor needs to operate on a patient in order to extract a Hemogen pack, and this process takes a bit of work.
* The bloodfeeding gene has a cost of {{--|1}} metabolic efficiency. Note that this isn't a choice with [[Sanguophage]]s, who already come with this gene.
* Hemogen parks are more efficient when harvesting from [[children]]. Bloodfeeders will receive less Hemogen (for the same blood loss) when feeding on a child, due to their smaller body size. However, when extracting a hemogen pack, a child will give an adult-sized pack.
Also note that [[conceited noble]]{{RoyaltyIcon}} pawns dislike hemogen packs, but don't mind bloodfeeding.

=== Extraction strategies ===
As:
* A hemogen pack gives 20 hemogen
* Extracting a hemogen pack causes 45% blood loss
* Blood loss recovers at 33% per day
You can safely extract safely extract 1 pack every {{#expr: (45/33) round 2}} days, or making {{#expr: 20/(45/33) round 2}} hemogen a day, capable of supporting {{#expr: 20/(45/33)/10 round 2}} [[sanguophage]]s pawns or {{#expr: 20/(45/33)/2 round 2}} [[hemogenic]] pawns. Note that this is with optimum timing and therefore represents a theoretical maximum gain - actual extractions may not occur so promptly.

Prisoners make ideal sources of hemogen - the risk of death and statistical impact from blood loss is not important and the extraction can be completely automated. Long term prisoners can cause problems however. Pawns with the [[dead calm]] gene, such as [[genie]]s, are ideal as they can feed and cloth themselves but will never harm other prisoners or attempt a prison break. Their mood becomes largely unimportant at that point, and they can be fed using a [[nutrient paste dispenser]] in their prison for maximum nutritional and colonist work efficiency. You may also choose to give them [[genes]] that improve their metabolic efficiency, to further cut costs. 

If a dead calm pawn is not available, you can also remove a prisoners legs by installing and removing [[peg leg]]s. They will need to be manually fed by a colonist but they can never escape.

== Gallery ==
<gallery>
HemogenPack a.png|One pack
HemogenPack b.png|Partial stack
HemogenPack c.png|Full stack
</gallery>

==Version history==
* [[Biotech DLC]] Release - Added
* [[Version/1.4.3530|1.4.3530]] - Added a toggle to the hemogen gizmo which allows configuration of whether or not a pawn can ingest hemogen packs to satisfy the desired hemogen level.
* [[Version/1.4.3541|1.4.3541]] - Extracting hemogen no longer requires medicine (previously: 2x [[herbal medicine|herbal]] or better) and does not anesthetize the target. Medical experience also reduced.
* [[Version/1.4.3555|1.4.3555]] - Reduced the work needed for the extract hemogen operation to 500 from 1500. Fix: Bloodfeeders sometimes do not ingest all taken hemogen packs, depending on food need level. Added a toggle to the hemogen gizmo which allows configuration of whether or not a pawn can ingest hemogen packs to desired hemogen level - Note this is essentially a duplicate of the change from 1.4.3530, it is currently unclear whether this is an error, whether there is a difference, or whether the change was reverted and re-added latter.
* [[Version/1.4.3563|1.4.3563]] - Fix: Sanguophages can take too many hemogen packs for maintaining hemogen levels in some circumstances.
* [[Version/1.4.3580|1.4.3580]] - Fix: Hemogen packs give "ate vegetarian" mood.

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[[Category: Food]]