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GS13NG/code/modules/surgery/organs/liver.dm
2019-12-23 04:24:13 +01:00

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#define LIVER_DEFAULT_HEALTH 100 //amount of damage required for liver failure
#define LIVER_DEFAULT_TOX_TOLERANCE 3 //amount of toxins the liver can filter out
#define LIVER_DEFAULT_TOX_LETHALITY 0.01 //lower values lower how harmful toxins are to the liver
#define LIVER_SWELLING_MOVE_MODIFY "pharma"
/obj/item/organ/liver
name = "liver"
icon_state = "liver"
w_class = WEIGHT_CLASS_NORMAL
zone = BODY_ZONE_CHEST
slot = ORGAN_SLOT_LIVER
desc = "Pairing suggestion: chianti and fava beans."
maxHealth = STANDARD_ORGAN_THRESHOLD
healing_factor = STANDARD_ORGAN_HEALING
decay_factor = STANDARD_ORGAN_DECAY
var/alcohol_tolerance = ALCOHOL_RATE//affects how much damage the liver takes from alcohol
var/failing //is this liver failing?
var/toxTolerance = LIVER_DEFAULT_TOX_TOLERANCE//maximum amount of toxins the liver can just shrug off
var/toxLethality = LIVER_DEFAULT_TOX_LETHALITY//affects how much damage toxins do to the liver
var/filterToxins = TRUE //whether to filter toxins
var/swelling = 0
var/cachedmoveCalc = 1
/obj/item/organ/liver/on_life()
var/mob/living/carbon/C = owner
if(istype(C))
if(!(organ_flags & ORGAN_FAILING))//can't process reagents with a failing liver
//slowly heal liver damage
damage = max(0, damage - 0.1)
if(filterToxins && !HAS_TRAIT(owner, TRAIT_TOXINLOVER))
//handle liver toxin filtration
for(var/datum/reagent/toxin/T in C.reagents.reagent_list)
var/thisamount = C.reagents.get_reagent_amount(T.type)
if (thisamount && thisamount <= toxTolerance)
C.reagents.remove_reagent(T.type, 1)
else
damage += (thisamount*toxLethality)
//metabolize reagents
C.reagents.metabolize(C, can_overdose=TRUE)
if(damage > 10 && prob(damage/3))//the higher the damage the higher the probability
to_chat(C, "<span class='warning'>You feel a dull pain in your abdomen.</span>")
if(damage > maxHealth)//cap liver damage
damage = maxHealth
if(swelling >= 10)
pharmacokinesis()
/obj/item/organ/liver/prepare_eat()
var/obj/S = ..()
S.reagents.add_reagent(/datum/reagent/iron, 5)
return S
//Just in case
/obj/item/organ/liver/Remove(mob/living/carbon/M, special = 0)
..()
M.remove_movespeed_modifier(LIVER_SWELLING_MOVE_MODIFY)
M.ResetBloodVol() //At the moment, this shouldn't allow application twice. You either have this OR a thirsty ferret.
sizeMoveMod(1, M)
//Applies some of the effects to the patient.
/obj/item/organ/liver/proc/pharmacokinesis()
var/moveCalc = 1+((round(swelling) - 9)/3)
if(moveCalc == cachedmoveCalc)//reduce calculations
return
if(prob(5))
to_chat(owner, "<span class='notice'>You feel a stange ache in your side, almost like a stitch. This pain is affecting your movements and making you feel lightheaded.</span>")
var/mob/living/carbon/human/H = owner
H.add_movespeed_modifier(LIVER_SWELLING_MOVE_MODIFY, TRUE, 100, NONE, override = TRUE, multiplicative_slowdown = moveCalc)
H.AdjustBloodVol(moveCalc/3)
sizeMoveMod(moveCalc, H)
/obj/item/organ/liver/proc/sizeMoveMod(var/value, mob/living/carbon/human/H)
if(cachedmoveCalc == value)
return
H.next_move_modifier /= cachedmoveCalc
H.next_move_modifier *= value
cachedmoveCalc = value
/obj/item/organ/liver/fly
name = "insectoid liver"
icon_state = "liver-x" //xenomorph liver? It's just a black liver so it fits.
desc = "A mutant liver designed to handle the unique diet of a flyperson."
alcohol_tolerance = 0.007 //flies eat vomit, so a lower alcohol tolerance is perfect!
/obj/item/organ/liver/plasmaman
name = "reagent processing crystal"
icon_state = "liver-p"
desc = "A large crystal that is somehow capable of metabolizing chemicals, these are found in plasmamen."
/obj/item/organ/liver/cybernetic
name = "cybernetic liver"
icon_state = "liver-c"
desc = "An electronic device designed to mimic the functions of a human liver. It has no benefits over an organic liver, but is easy to produce."
organ_flags = ORGAN_SYNTHETIC
maxHealth = 1.1 * STANDARD_ORGAN_THRESHOLD
/obj/item/organ/liver/cybernetic/upgraded
name = "upgraded cybernetic liver"
icon_state = "liver-c-u"
desc = "An upgraded version of the cybernetic liver, designed to improve upon organic livers. It is resistant to alcohol poisoning and is very robust at filtering toxins."
alcohol_tolerance = 0.001
maxHealth = 2 * STANDARD_ORGAN_THRESHOLD
toxTolerance = 15 //can shrug off up to 15u of toxins
toxLethality = 0.008 //20% less damage than a normal liver
/obj/item/organ/liver/cybernetic/emp_act(severity)
. = ..()
if(. & EMP_PROTECT_SELF)
return
switch(severity)
if(1)
damage+=100
if(2)
damage+=50