Difference between revisions of "Nuclear stomach"

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{{Royalty}}
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{{Royalty}}{{infobox main|
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{{Define|Body Part
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| name = Nuclear stomach
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| image = Artificial Organ
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| image = Health item bionic.png|Nuclear stomach
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| always haulable = true
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| type = Medical Items
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| def name = Nuclear stomach
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| type2 = Body Parts
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| description = A micro-nuclear reactor combined with complex chemical synthesis replaces the body's need for food energy. Food is required only to replace matter lost from the body, reducing the user's intake needs significantly. This artificial stomach cannot get food poisoning. However, there is little room to the shield the reactor <small>[sic]</small>, so the radiation increases the risk of cancer.
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| tech level = Spacer
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| graphic class = Graphic_Single
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| description = A micro-nuclear reactor combined with complex chemical synthesis replaces the body's need for food energy. Food is required only to replace matter lost from the body, reducing the user's intake needs significantly. This artificial stomach cannot get food poisoning. However, there is little room to shield the reactor, so the radiation increases the risk of cancer.
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| graphic path = Things/Item/BodyPart/ArtificialOrgan
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| production facility 1 = Fabrication bench
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| is body part = true
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| research = Artificial metabolism
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| label = Nuclear Stomach
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| skill 1 = Crafting
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| parent name = BodyPartBase
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| skill 1 level = 8
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| path cost = 10
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| resource 1 = Plasteel
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| selectable = true
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| resource 1 amount = 15
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| thing class = ThingWithComps
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| resource 2 = Advanced component
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| ticker type = Never
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| resource 2 amount = 4
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| use hit points = true
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| work to make = 26000
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| flammability base = 1.0
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| mass base = 4
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| market value base = 210
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| hp = 50
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| max hit points base = 50
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| flammability = 1.0
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| mass = 4
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| marketvalue  = 1030
 +
| thingSetMakerTags = RewardStandardLowFreq
 +
| tradeTags = Bionic, ImplantEmpireCommon
 +
| techHediffsTags = Advanced, ImplantEmpireCommon
 
}}
 
}}
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The '''Nuclear Stomach''' drastically reduces a pawn's hunger rate to just one-quarter of its normal value and prevents food poisoning, however it can cause [[Ailments#Carcinoma|cancer]]. It can be crafted from 15 plasteel and 4 advanced components.
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The '''Nuclear Stomach''' drastically reduces a pawn's [[Saturation#hunger rate|hunger rate]] to just one-quarter of its normal value and prevents food poisoning, however it causes an elevated rate of [[Carcinoma|cancer]]. Like a [[bionic stomach]], it also provides 125% part efficiency.
  
−
Cancers from this stomach occur on average once every 120 ingame days, on the torso.
+
Shocking a pawn with this stomach using [[EMP]] will force them to vomit.
  
−
Shocking a pawn with this stomach using EMP will force them to vomit.
+
== Acquisition ==
 +
{{Acquisition}}
 +
 
 +
Alternatively, they can be purchased from [[traders]] and outlander and [[empire]] settlements.
 +
 
 +
== Summary ==
 +
=== Body part ===
 +
A nuclear stomach replaces the user's organic stomach. The nuclear stomach has a part efficiency of 125%. This not only fully replaces the functionality of a normal stomach - when coupled with the stomach body part having a [[Digestion]] importance of 50%, it results in an increase in Digestion of {{+|12.5%}} over natural. Digestion, in turn, improves the [[rest rate multiplier]] by {{+|3.75%}}, meaning the colonist will require slightly less sleep.
 +
 
 +
[[Eating]] capacity and [[eating speed]] are unaffected.
 +
 
 +
=== Other effects ===
 +
A nuclear stomach reduces the hunger rate of a pawn by {{Good|75%}}, meaning they only require 1/4 the food to live. Contrary to what is displayed on the item info card this effect is applied as an offset to the hunger rate instead of a multiplier. All artificial stomachs are immune to [[gut worms]], and installing one will instantly cure the disease. A nuclear stomach also grants full immunity to [[food poisoning]]. Unlike the [[bionic stomach]], but similar to the other Royalty DLC stomach replacements, [[EMP]]ing a pawn with a nuclear stomach will force them to vomit.  
 +
 
 +
However, it also causes a [[carcinoma]] on the torso of the host pawn on average once every 120 in-game days.
 +
 
 +
=== Installation ===
 +
Installing the part requires {{Ticks|2500}} of work, 2x medicine of [[Herbal medicine|herbal]] quality or better, and a [[Skills#Medical|Medical skill]] of 5.
 +
 
 +
Removing the part requires {{ticks|2000}} of work, 1x medicine of [[Herbal medicine|herbal]] quality or better, and has no [[Skills#Medical|Medical skill]] requirements.
 +
 
 +
If the operation fails, the part will be destroyed.
 +
 
 +
== Analysis ==
 +
{{Stub|section=1|reason=General value proposition needed, not just comparisons to other stomachs}}
 +
 
 +
The nuclear stomach is a cheaper way to reduce time sleeping than upgrading to a [[royal bed]], however both can be combined.
 +
 
 +
It is worth considering installing nuclear stomachs on [[slaves]]{{IdeologyIcon}} late game, since it reduces the food cost and slaves can be replaced easily if the surgery for the cancer fails or isn't attempted. The stomach can even be removed from the slave before death to implant into their replacement once it becomes clear that the cancer will be fatal.
 +
 
 +
While EMP-wielding enemies are relatively rare, due to the induced vomiting, friendly fire is a relevant concern on melee pawns as using [[EMP grenades]] and melee attackers on [[Centipede]]s is a common and successful tactic. Having a nuclear stomach on those melee pawns will result in them vomiting and negatively affecting this tactic and others like it. However, this can also be exploited against enemies with part, as well as against escaping [[prisoner]]s or rebellious [[slaves]].{{IdeologyIcon}} For the latter two options however, use of an implant that causes [[brain shock]] may be more useful as it downs the pawn, rather than merely causes temporary vomiting.
 +
 
 +
It is important to note that since the hunger reduction stacks ''additively'' with hunger offsets such as [[Smokeleaf joint#smokeleaf high|smokeleaf high]] and [[Neural supercharger#neural superchargers|neural superchargers]]{{IdeologyIcon}}, rather than multiplicatively, the effect may be much weaker than expected in combination of other modifiers.
 +
 
 +
 
 +
=== Carcinoma ===
 +
All the following calculations will assume industrial medicine is being used, and otherwise a near best case scenario (15+ skill doctor with bionic arms, clean hospital with vitals monitors, etc.).
 +
 
 +
There are two strategies to deal with carcinoma; treatment, or surgery.
 +
 
 +
First, surgery: all surgery has a {{bad|2%}} failure chance, and the "Excise carcinoma" surgery has a {{bad|25%}} death chance on fail. This means that for every carcinoma that grows, there is a {{bad|0.5%}} chance the pawn will die. You can expect to lose a pawn at around the 138th carcinoma, on average. This seems rather high, but you could get unlucky and have it happen sooner, especially if you use nuclear stomachs on many pawns.
 +
 
 +
The other option is treatment. Carcinomas are quite variable, having a random chance to grow or shrink on their own, independent of treatment. On average they take 111 days to cure with the best treatment, slightly shorter than the 120 day average carcinoma generation rate from the stomach. This means you can expect your pawn to nearly constantly have a single mild carcinoma, requiring a 1 medicine treatment every 4 days (15 medicine per year per pawn). Technically this also makes the body part have {{--|25%}} efficiency, but nuclear stomach carcinomas generate in the torso, and torso part efficiency has no effect on any stat.
 +
 
 +
Treatment is the safer method to handle carcinoma, but takes more time for both the pawn and their doctor, and costs 13 more medicine per year. Neither method is strictly better, it depends on how severe you consider the {{bad|0.5%}} chance of death to be, and the value of the pawn.
 +
 
 +
=== Genetic synergy ===
 +
{{Biotech|section=1}}
 +
The nuclear stomach has significant synergy with the [[gene]] system added by the [[Biotech DLC]]. As metabolic efficiency is one of the key costs to beneficial genes, the nuclear stomach's -75% reduction to the base hunger rate can reduce even the worst metabolic efficiency with a hunger rate of 225% to only 56% that of a baseline human. Furthermore, the carcinoma risk from the stomach can be totally negated by the [[Genes#Non-senescent|Non-senescent]] gene.
 +
 
 +
=== Comparisons ===
 +
The [[Royalty DLC]] introduced a number of stomach replacements to complement the base [[bionic stomach]], each with their own advantages and disadvantages. All three of these variants include the benefits offered by the bionic stomach in addition to their unique benefits however they are also susceptible to [[EMP]], causing the pawn to vomit uncontrollably for a short length of time.
 +
 
 +
==== Bionic Stomach ====
 +
In comparison to the nuclear stomach, the [[bionic stomach]] eliminates the vulnerability to EMP and cancer risk in exchange for being vulnerable to food poisoning and requiring 4x as much food.
 +
 
 +
==== Sterilizing Stomach ====
 +
In comparison to the nuclear stomach, the [[sterilizing stomach]] eliminates the cancer risk in exchange for requiring 4x as much food.
 +
 
 +
==== Reprocessor Stomach ====
 +
In comparison to the nuclear stomach, the [[reprocessor stomach]] eliminates the cancer risk in exchange for vulnerability to [[food poisoning]] and requiring 3x as much food.
 +
 
 +
{{Stomach Comparison Table}}
  
 
== Trivia ==
 
== Trivia ==
−
 
 
Despite being called a Nuclear stomach, it does not require [[uranium]] to craft.
 
Despite being called a Nuclear stomach, it does not require [[uranium]] to craft.
  
−
== Version History ==
+
== Version history ==
−
 
+
[[Version/1.1.2570|1.1.2570]] - Now prevents food poisoning as claimed.
−
Prior to Update 1.1.2570 the Nuclear Stomach did not prevent food poisoning as claimed.
 
  
 
{{nav|body parts|wide}}
 
{{nav|body parts|wide}}
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+
[[Category:Medical Item]] [[Category:Body Part]] [[Category:Artificial Body Part]]
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[[Category: Royalty]]
 

Latest revision as of 09:11, 31 May 2024

RoyaltyIcon.png
This article relates to content added by Royalty (DLC). Please note that it will not be present without the DLC enabled.

Nuclear stomach

Nuclear stomach

A micro-nuclear reactor combined with complex chemical synthesis replaces the body's need for food energy. Food is required only to replace matter lost from the body, reducing the user's intake needs significantly. This artificial stomach cannot get food poisoning. However, there is little room to shield the reactor, so the radiation increases the risk of cancer.

Base Stats

Type
Medical Items – Body Parts
Tech Level
Spacer
Market Value
1030 Silver
Mass
4 kg
HP
50
Flammability
100%

Creation

Crafted At
Fabrication bench
Required Research
Artificial metabolismTechprint
Skill Required
Crafting 8
Work To Make
26,000 ticks (7.22 mins)
Resources to make
Plasteel 15 + Advanced component 4
Technical
thingSetMakerTags
RewardStandardLowFreq
techHediffsTags
Advanced, ImplantEmpireCommon
tradeTags
Bionic, ImplantEmpireCommon


The Nuclear Stomach drastically reduces a pawn's hunger rate to just one-quarter of its normal value and prevents food poisoning, however it causes an elevated rate of cancer. Like a bionic stomach, it also provides 125% part efficiency.

Shocking a pawn with this stomach using EMP will force them to vomit.

Acquisition[edit]

Nuclear stomaches can be crafted at a fabrication bench once the artificial metabolism research project has been completed. Note that this research requires a techprint. Each requires Plasteel 15 Plasteel, Advanced component 4 Advanced components, 26,000 ticks (7.22 mins) of work modified by the general labor speed of the crafter, and a crafting skill of 8.

Alternatively, they can be purchased from traders and outlander and empire settlements.

Summary[edit]

Body part[edit]

A nuclear stomach replaces the user's organic stomach. The nuclear stomach has a part efficiency of 125%. This not only fully replaces the functionality of a normal stomach - when coupled with the stomach body part having a Digestion importance of 50%, it results in an increase in Digestion of +12.5% over natural. Digestion, in turn, improves the rest rate multiplier by +3.75%, meaning the colonist will require slightly less sleep.

Eating capacity and eating speed are unaffected.

Other effects[edit]

A nuclear stomach reduces the hunger rate of a pawn by 75%, meaning they only require 1/4 the food to live. Contrary to what is displayed on the item info card this effect is applied as an offset to the hunger rate instead of a multiplier. All artificial stomachs are immune to gut worms, and installing one will instantly cure the disease. A nuclear stomach also grants full immunity to food poisoning. Unlike the bionic stomach, but similar to the other Royalty DLC stomach replacements, EMPing a pawn with a nuclear stomach will force them to vomit.

However, it also causes a carcinoma on the torso of the host pawn on average once every 120 in-game days.

Installation[edit]

Installing the part requires 2,500 ticks (41.67 secs) of work, 2x medicine of herbal quality or better, and a Medical skill of 5.

Removing the part requires 2,000 ticks (33.33 secs) of work, 1x medicine of herbal quality or better, and has no Medical skill requirements.

If the operation fails, the part will be destroyed.

Analysis[edit]

StumpChoppedA (cropped).png
This section is a stub. You can help RimWorld Wiki by expanding it. Reason: General value proposition needed, not just comparisons to other stomachs.

The nuclear stomach is a cheaper way to reduce time sleeping than upgrading to a royal bed, however both can be combined.

It is worth considering installing nuclear stomachs on slavesContent added by the Ideology DLC late game, since it reduces the food cost and slaves can be replaced easily if the surgery for the cancer fails or isn't attempted. The stomach can even be removed from the slave before death to implant into their replacement once it becomes clear that the cancer will be fatal.

While EMP-wielding enemies are relatively rare, due to the induced vomiting, friendly fire is a relevant concern on melee pawns as using EMP grenades and melee attackers on Centipedes is a common and successful tactic. Having a nuclear stomach on those melee pawns will result in them vomiting and negatively affecting this tactic and others like it. However, this can also be exploited against enemies with part, as well as against escaping prisoners or rebellious slaves.Content added by the Ideology DLC For the latter two options however, use of an implant that causes brain shock may be more useful as it downs the pawn, rather than merely causes temporary vomiting.

It is important to note that since the hunger reduction stacks additively with hunger offsets such as smokeleaf high and neural superchargersContent added by the Ideology DLC, rather than multiplicatively, the effect may be much weaker than expected in combination of other modifiers.


Carcinoma[edit]

All the following calculations will assume industrial medicine is being used, and otherwise a near best case scenario (15+ skill doctor with bionic arms, clean hospital with vitals monitors, etc.).

There are two strategies to deal with carcinoma; treatment, or surgery.

First, surgery: all surgery has a 2% failure chance, and the "Excise carcinoma" surgery has a 25% death chance on fail. This means that for every carcinoma that grows, there is a 0.5% chance the pawn will die. You can expect to lose a pawn at around the 138th carcinoma, on average. This seems rather high, but you could get unlucky and have it happen sooner, especially if you use nuclear stomachs on many pawns.

The other option is treatment. Carcinomas are quite variable, having a random chance to grow or shrink on their own, independent of treatment. On average they take 111 days to cure with the best treatment, slightly shorter than the 120 day average carcinoma generation rate from the stomach. This means you can expect your pawn to nearly constantly have a single mild carcinoma, requiring a 1 medicine treatment every 4 days (15 medicine per year per pawn). Technically this also makes the body part have −25% efficiency, but nuclear stomach carcinomas generate in the torso, and torso part efficiency has no effect on any stat.

Treatment is the safer method to handle carcinoma, but takes more time for both the pawn and their doctor, and costs 13 more medicine per year. Neither method is strictly better, it depends on how severe you consider the 0.5% chance of death to be, and the value of the pawn.

Genetic synergy[edit]

BiotechIcon.png
This section relates to content added by Biotech (DLC). Please note that it will not be present without the DLC enabled.

The nuclear stomach has significant synergy with the gene system added by the Biotech DLC. As metabolic efficiency is one of the key costs to beneficial genes, the nuclear stomach's -75% reduction to the base hunger rate can reduce even the worst metabolic efficiency with a hunger rate of 225% to only 56% that of a baseline human. Furthermore, the carcinoma risk from the stomach can be totally negated by the Non-senescent gene.

Comparisons[edit]

The Royalty DLC introduced a number of stomach replacements to complement the base bionic stomach, each with their own advantages and disadvantages. All three of these variants include the benefits offered by the bionic stomach in addition to their unique benefits however they are also susceptible to EMP, causing the pawn to vomit uncontrollably for a short length of time.

Bionic Stomach[edit]

In comparison to the nuclear stomach, the bionic stomach eliminates the vulnerability to EMP and cancer risk in exchange for being vulnerable to food poisoning and requiring 4x as much food.

Sterilizing Stomach[edit]

In comparison to the nuclear stomach, the sterilizing stomach eliminates the cancer risk in exchange for requiring 4x as much food.

Reprocessor Stomach[edit]

In comparison to the nuclear stomach, the reprocessor stomach eliminates the cancer risk in exchange for vulnerability to food poisoning and requiring 3x as much food.

  • Stomach Cost Digestion Hunger Rate Food poisoning Gut Worms EMP
    vulnerability     		Side effects Market Value
    Stomach Content from Rimworld core game only - 1x 1x Check.png Check.png Ex.png Ex.png -
    Bionic stomach Content from Rimworld core game only Plasteel 10+ Advanced component 3 1.125x 1x ×50% Check.png Ex.png Ex.png Silver 785
    Sterilizing stomach Content added by the Royalty DLC Plasteel 15+ Advanced component 4 1.125x 1x Ex.png Ex.png Check.png Ex.png Silver 1,030
    Reprocessor stomach Content added by the Royalty DLC Plasteel 15+ Advanced component 4 1.125x 0.75x Check.png Ex.png Check.png Ex.png Silver 1,030
    Nuclear stomach Content added by the Royalty DLC Plasteel 15+ Advanced component 4 1.125x 0.25x Ex.png Ex.png Check.png Carcinoma Silver 1,030
    Fleshmass stomach Content added by the Anomaly DLC - 1x 1x Ex.png Ex.png Ex.png +8% Pain ??[Detail needed]


    • Trivia[edit]

    Despite being called a Nuclear stomach, it does not require uranium to craft.

    Version history[edit]

    1.1.2570 - Now prevents food poisoning as claimed.

    Artificial body parts
    Arm/Hand
    Archotech arm • Bionic arm • Power claw • Prosthetic arm • Wooden hand • Drill arm Content added by the Royalty DLC • Elbow blade Content added by the Royalty DLC • Field hand Content added by the Royalty DLC • Hand talon Content added by the Royalty DLC • Venom talon Content added by the Royalty DLC • Flesh tentacleContent added by the Anomaly DLC • Flesh whipContent added by the Anomaly DLC
    Head
    Archotech eye • Bionic eye • Bionic ear • Bionic jaw • Bionic tongue • Cochlear implant • Denture • Aesthetic nose Content added by the Royalty DLC
    Head implants
    Joywire • Painstopper • Circadian assistant Content added by the Royalty DLC • Circadian half-cycler Content added by the Royalty DLC • Gastro-analyzer Content added by the Royalty DLC • Learning assistant Content added by the Royalty DLC • Mindscrew Content added by the Royalty DLC • Neurocalculator Content added by the Royalty DLC • Psychic harmonizer Content added by the Royalty DLC • Psychic reader Content added by the Royalty DLC • Psychic sensitizer Content added by the Royalty DLC • Venom fangs Content added by the Royalty DLC • Control sublink (Standard, High) Content added by the Biotech DLC • Mechlink Content added by the Biotech DLC • Mech gestation processor Content added by the Biotech DLC • Remote repairer Content added by the Biotech DLC • Remote shielder Content added by the Biotech DLC • Repair probe Content added by the Biotech DLC
    Spine
    Bionic spine • Revenant vertebraeContent added by the Anomaly DLC
    Stomach
    Bionic stomach • Nuclear stomach Content added by the Royalty DLC • Reprocessor stomach Content added by the Royalty DLC • Sterilizing stomach Content added by the Royalty DLC • Fleshmass stomach Content added by the Anomaly DLC
    Heart
    Bionic heart • Prosthetic heart • Heart • Adrenal heartContent added by the Anomaly DLC • Corrosive heartContent added by the Anomaly DLC • Metalblood heartContent added by the Anomaly DLC
    Lung
    Lung • Detoxifier lung Content added by the Biotech DLC • Fleshmass lung Content added by the Anomaly DLC
    Kidney
    Kidney • Detoxifier kidney Content added by the Biotech DLC
    Organs
    Liver
    Visceral implants
    Death acidifier • Aesthetic shaper Content added by the Royalty DLC • Coagulator Content added by the Royalty DLC • Healing enhancer Content added by the Royalty DLC • Armorskin gland Content added by the Royalty DLC • Stoneskin gland Content added by the Royalty DLC • Toughskin gland Content added by the Royalty DLC • Immunoenhancer Content added by the Royalty DLC • Love enhancer Content added by the Royalty DLC • Ghoul platingContent added by the Anomaly DLC • Ghoul barbsContent added by the Anomaly DLC
    Leg/Foot
    Archotech leg • Bionic leg • Prosthetic leg • Peg leg • Wooden foot • Knee spike Content added by the Royalty DLC
    Related
    Psylink neuroformer Content added by the Royalty DLC • Xenogerm Content added by the Biotech DLC
    Deprecated
    Scyther blade • Psychic silencer Content added by the Royalty DLC

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