Nuke Limb Processing (#22814)

<img width="1549" height="857" alt="image"
src="https://github.com/user-attachments/assets/3830233d-0635-4942-b2aa-024651e6cffa"
/>

Limbs make up roughly half of the "Per additional player" processing
overhead, while Organs make up most of the other half.
Not every organ is an easy candidate for "Event-only processing", but
external limbs are significantly easier to do so.

So this PR makes it so that External Limbs no longer require Processing
unless an event happens that would justify them requiring processing.
Which SIGNIFICANTLY reduces the overall additional cost to the
Processing subsystem per player that joins the server.

Oh and I also made the Appendix and Kidneys not require constant
processing. The Appendix will only process if it is hit by an
Appendicitis event, and the Kidneys will only process if they are either
damaged, or you get poisoned.

code/modules/events/spontaneous_appendicitis.dm

@@ -11,4 +11,5 @@
 				continue
 			A.inflamed = 1
 			A.update_icon()
+			START_PROCESSING(SSprocessing, A)
 			break

code/modules/mob/living/carbon/brain/MMI.dm

@@ -87,7 +87,7 @@
 				if(!B.can_prepare)
 					to_chat(user, SPAN_WARNING("\The [B] is incompatible with [src]!"))
 					return
-				if(B.damage >= B.max_damage)
+				if(B.get_damage() >= B.max_damage)
 					to_chat(user, SPAN_WARNING("That brain is well and truly dead."))
 					return
 				else if(!B.brainmob)

code/modules/mob/living/carbon/diona_base.dm

@@ -256,16 +256,16 @@ and some alternative things that are toxic to other life, such as radium and mut
 	if (life_tick % LIFETICK_INTERVAL_LESS == 0)
 		if (bad_internal_organs.len)
 			for (var/obj/item/organ/O in bad_internal_organs)
-				var/CL = O.damage
+				var/CL = O.get_damage()
 				var/value
 				if(total_radiation > 0)
 					value = min(CL, total_radiation, 2 * DS.healing_factor * LIFETICK_INTERVAL_LESS)
-					O.damage += value/-1.5
+					O.add_damage(value/-1.5)
 					total_radiation -= value
 					CL = getCloneLoss()
 
 				value = min(CL, DS.stored_energy, 1 * DS.healing_factor * LIFETICK_INTERVAL_LESS)
-				O.damage += value/-3
+				O.add_damage(value/-3)
 				DS.stored_energy -= value
 
 	//Last up, growing brand new limbs and organs to replace those lost or removed.

code/modules/mob/living/carbon/human/damage_menu.dm

@@ -114,9 +114,10 @@
 			if(!O)
 				to_chat(usr, SPAN_WARNING("\The [H] doesn't have that organ!"))
 				return
+			var/organ_damage = O.get_damage()
 			switch(params["action"])
 				if("damage")
-					var/damage_dealt = tgui_input_number(usr, "How much damage do you want to deal? (Current Damage: [O.damage])", "Brute Damage")
+					var/damage_dealt = tgui_input_number(usr, "How much damage do you want to deal? (Current Damage: [organ_damage])", "Brute Damage")
 					if(damage_dealt)
 						O.take_internal_damage(damage_dealt)
 						log_and_message_admins("used the Damage Menu to deal [damage_dealt] [params["action"]] to [H]'s [params["name"]]", usr, get_turf(H))
@@ -129,12 +130,12 @@
 							O.decrease_germ_level()
 							log_and_message_admins("used the Damage Menu to decrease the infection level of [H]'s [params["name"]]", usr, get_turf(H))
 				if("bruise")
-					if(O.damage < O.min_bruised_damage)
-						O.take_damage(O.damage + (O.min_bruised_damage - O.damage) + 1)
+					if(organ_damage < O.min_bruised_damage)
+						O.take_damage(organ_damage + (O.min_bruised_damage - organ_damage) + 1)
 						log_and_message_admins("used the Damage Menu to bruise [H]'s [params["name"]]", usr, get_turf(H))
 				if("break")
-					if(O.damage < O.min_broken_damage)
-						O.take_damage(O.damage + (O.min_broken_damage - O.damage) + 1)
+					if(organ_damage < O.min_broken_damage)
+						O.take_damage(organ_damage + (O.min_broken_damage - organ_damage) + 1)
 						log_and_message_admins("used the Damage Menu to break [H]'s [params["name"]]", usr, get_turf(H))
 				if("remove")
 					O.removed(H)

code/modules/mob/living/carbon/human/human.dm

@@ -1128,7 +1128,7 @@
 	..()
 	if(should_have_organ(BP_STOMACH))
 		var/obj/item/organ/internal/stomach/stomach = internal_organs_by_name[BP_STOMACH]
-		if(!stomach || stomach.is_broken() || (stomach.is_bruised() && prob(stomach.damage)))
+		if(!stomach || stomach.is_broken() || (stomach.is_bruised() && prob(stomach.get_damage())))
 			if(should_have_organ(BP_HEART))
 				vessel.trans_to_obj(vomit, 5)
 			else

code/modules/mob/living/carbon/human/human_damage.dm

@@ -44,7 +44,7 @@
 	if(should_have_organ(BP_BRAIN) && internal_organs_by_name)
 		var/obj/item/organ/internal/brain/sponge = internal_organs_by_name[BP_BRAIN]
 		if(sponge)
-			sponge.damage = min(max(amount, 0),sponge.species.total_health)
+			sponge.set_damage(min(max(amount, 0),sponge.species.total_health))
 			updatehealth()
 
 /mob/living/carbon/human/getBrainLoss()
@@ -63,7 +63,7 @@
 			if(sponge.status & ORGAN_DEAD)
 				return sponge.species.total_health
 			else
-				return sponge.damage
+				return sponge.get_damage()
 		else
 			return species.total_health
 	return 0
@@ -223,6 +223,9 @@
 		if(kidneys)
 			pick_organs -= kidneys
 			pick_organs.Insert(1, kidneys)
+			if (!heal)
+				// Kindly inform the kidneys that there's going to be poison to remove. :)
+				START_PROCESSING(SSprocessing, kidneys)
 
 
 	var/obj/item/organ/internal/liver/liver = null
@@ -247,15 +250,16 @@
 			break
 		if(BP_IS_ROBOTIC(I))
 			continue //Chems won't help, you need surgery to fix robot organs
+		var/organ_damage = I.get_damage()
 		if(heal)
-			if(I.damage < amount)
-				amount -= I.damage
-				I.damage = 0
+			if(organ_damage < amount)
+				amount -= organ_damage
+				I.set_damage(0)
 			else
-				I.damage -= amount
+				I.add_damage(-amount)
 				amount = 0
 		else
-			var/cap_dam = I.max_damage - I.damage
+			var/cap_dam = I.max_damage - organ_damage
 			if(amount >= cap_dam)
 				I.take_internal_damage(cap_dam, silent=TRUE)
 				amount -= cap_dam

code/modules/mob/living/carbon/human/human_organs.dm

@@ -195,7 +195,7 @@
 		if(!brain || stat == DEAD || (status_flags & FAKEDEATH))
 			brain_result = 0
 		else if(stat != DEAD)
-			brain_result = round(max(0,(1 - brain.damage/brain.max_damage)*100))
+			brain_result = round(max(0,(1 - brain.get_damage()/brain.max_damage)*100))
 	else
 		brain_result = -1
 	return brain_result

code/modules/mob/living/carbon/human/life.dm

@@ -470,7 +470,7 @@
 			for(var/obj/item/organ/external/O in organs)
 				if(QDELETED(O))
 					continue
-				if((O.damage + LOW_PRESSURE_DAMAGE) < O.max_damage)
+				if((O.get_damage() + LOW_PRESSURE_DAMAGE) < O.max_damage)
 					O.take_damage(brute = LOW_PRESSURE_DAMAGE, used_weapon = "Low Pressure")
 			if(getOxyLoss() < 55)
 				adjustOxyLoss(4)

code/modules/mob/living/carbon/human/species/station/human/human.dm

@@ -103,7 +103,7 @@
 		for(var/obj/item/organ/I in H.internal_organs)
 			if((I.status & ORGAN_DEAD) || BP_IS_ROBOTIC(I))
 				continue
-			if(I.damage > 2)
+			if(I.get_damage() > 2)
 				if(prob(2))
 					var/obj/item/organ/external/parent = H.get_organ(I.parent_organ)
 					H.custom_emote(VISIBLE_MESSAGE, "clutches [H.get_pronoun("his")] [parent.name]!")

code/modules/mob/living/carbon/human/species/station/ipc/ipc.dm

@@ -506,5 +506,5 @@
 	if(istype(voice_synth))
 		if(voice_synth.is_bruised())
 			// at most, 30 * 2 + 10 = 70, which is the maximum value we can use for Gibberish
-			message = Gibberish(message, voice_synth.damage * 2 + (voice_synth.is_broken() ? 10 : 0))
+			message = Gibberish(message, voice_synth.get_damage() * 2 + (voice_synth.is_broken() ? 10 : 0))
 			return list(HSP_MSG = message, HSP_VERB = pick(list("crackles", "buzzes")))

code/modules/mob/living/living.dm

@@ -557,8 +557,8 @@ default behaviour is:
 	if(repair_brain && should_have_organ(BP_BRAIN))
 		repair_brain = FALSE
 		var/obj/item/organ/internal/brain/brain = internal_organs_by_name[BP_BRAIN]
-		if(brain.damage > (brain.max_damage/2))
-			brain.damage = (brain.max_damage/2)
+		if(brain.get_damage() > (brain.max_damage/2))
+			brain.set_damage(brain.max_damage/2)
 		if(brain.status & ORGAN_DEAD)
 			brain.status &= ~ORGAN_DEAD
 			START_PROCESSING(SSprocessing, brain)

code/modules/mob/living/silicon/robot/analyzer.dm

@@ -107,7 +107,7 @@
 				if(machine_organ.get_integrity() < 100)
 					to_chat(user, "<font color='#FFA500'><b>[machine_organ.name]:</b> Integrity damage detected.</font>")
 					found_damage = TRUE
-			else if(O.damage)
+			else if(O.get_damage())
 				to_chat(user, SPAN_WARNING("<b>[O.name]:</b> Core damage detected."))
 				found_damage = TRUE
 			if(!found_damage)

code/modules/modular_computers/file_system/programs/research/robotics.dm

@@ -79,7 +79,7 @@
 
 			organ_data["name"] = organ.name
 			organ_data["desc"] = organ.desc
-			organ_data["damage"] = organ.damage
+			organ_data["damage"] = organ.get_damage()
 			organ_data["max_damage"] = organ.max_damage
 
 			data["organs"] += list(organ_data)

code/modules/organs/blood.dm

@@ -111,7 +111,7 @@
 				pulse_mod *= heart.too_fast_pump_modifier
 			if(PULSE_THREADY)
 				pulse_mod *= heart.thready_pump_modifier
-	blood_volume *= pulse_mod * max(min_efficiency, (1-(heart.damage / heart.max_damage)))
+	blood_volume *= pulse_mod * max(min_efficiency, (1-(heart.get_damage() / heart.max_damage)))
 
 	return min(blood_volume, 100)
 

code/modules/organs/internal/_internal.dm

@@ -39,20 +39,17 @@
 	return ..()
 
 /// Sets the internal organ as belonging to the targeted external organ, and matches the target's species/robotness. Also updates all organ lists belonging to the owner.
-/obj/item/organ/internal/replaced(var/mob/living/carbon/human/target, var/obj/item/organ/external/affected)
-	if(!istype(target))
-		return 0
+/obj/item/organ/internal/replaced(mob/living/carbon/human/target, obj/item/organ/external/affected)
+	. = ..()
 
 	// robotic organs emulate behavior of the equivalent flesh organ of the species
 	if(BP_IS_ROBOTIC(src) || !species)
 		species = target.species
 
-	..()
-
 	target.internal_organs |= src
 	affected.internal_organs |= src
 	target.internal_organs_by_name[organ_tag] = src
-	return 1
+	return TRUE
 
 /obj/item/organ/internal/die()
 	..()
@@ -121,6 +118,7 @@
 	min_bruised_damage = FLOOR(0.25 * max_damage, 1)
 
 /obj/item/organ/internal/proc/take_internal_damage(amount, var/silent=0)
+	START_PROCESSING(SSprocessing, src)
 	if(BP_IS_ROBOTIC(src))
 		damage = between(0, src.damage + (amount * 0.8), max_damage)
 	else

code/modules/organs/internal/appendix.dm

@@ -21,6 +21,13 @@
 	/// The amount of damage an appendix takes per second while in stage 2 of appendicitis.
 	var/stage_two_organ_damage_per_second = 0.006
 
+/**
+ * Override so that the appendix will never process on its own.
+ * It is instead added to processing via the spontaneous_appendicitis event.
+ */
+/obj/item/organ/internal/appendix/process_initialize()
+	return
+
 /obj/item/organ/internal/appendix/update_icon()
 	..()
 	if(inflamed)
@@ -30,7 +37,7 @@
 /obj/item/organ/internal/appendix/process(seconds_per_tick)
 	..()
 	if(!owner || !inflamed || !BP_IS_ROBOTIC(src))
-		return
+		return PROCESS_KILL
 
 	if(owner.stasis_value > 0)
 		// Decrease the effective tickrate when in stasis.

code/modules/organs/internal/kidneys.dm

@@ -43,9 +43,9 @@
 	var/dead_toxin_accumulation_per_second = 0.66
 
 /obj/item/organ/internal/kidneys/process(seconds_per_tick)
-	..()
-	if(!owner)
-		return
+	. = ..()
+	if(. == PROCESS_KILL || !owner)
+		return PROCESS_KILL
 
 	if(owner.stasis_value > 0) // Decrease the effective tickrate when in stasis.
 		seconds_per_tick /= owner.stasis_value
@@ -72,3 +72,6 @@
 			owner.adjustToxLoss(broken_toxin_accumulation_per_second * seconds_per_tick)
 		if(status & ORGAN_DEAD)
 			owner.adjustToxLoss(dead_toxin_accumulation_per_second * seconds_per_tick)
+
+	if (!owner.getToxLoss() && !damage) // None of the conditions triggered, therefore we have healthy kidneys that we don't care about.
+		return PROCESS_KILL

code/modules/organs/organ.dm

@@ -16,7 +16,11 @@
 	var/death_time
 
 	//Organ damage stats.
-	var/damage = 0 // amount of damage to the organ
+	/**
+	 * amount of damage to the organ. THIS IS PRIVATE FOR A REASON.
+	 * USE get_damage and set_damage IF YOU NEED TO CHANGE OR RETRIEVE THIS.
+	 */
+	VAR_PRIVATE/damage = 0
 	/// Total amount of EMP damage a mechanical organ has taken. Effectively equal to "number of seconds the organ EMP effect will last".
 	var/surge_damage = 0.0
 	/**
@@ -83,8 +87,14 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 				blood_DNA[dna.unique_enzymes] = dna.b_type
 		if(internal)
 			holder.internal_organs |= src
-	START_PROCESSING(SSprocessing, src)
+	process_initialize()
 
+/**
+ * This proc exists so that organs which do not require "always processing" can override it
+ * in order to opt-out of processing for performance reasons.
+ */
+/obj/item/organ/proc/process_initialize()
+	START_PROCESSING(SSprocessing, src)
 
 /obj/item/organ/Destroy()
 	STOP_PROCESSING(SSprocessing, src)
@@ -142,6 +152,7 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 	return damage >= min_bruised_damage
 
 /obj/item/organ/proc/bruise()
+	START_PROCESSING(SSprocessing, src)
 	damage = max(damage, min_bruised_damage)
 
 #define ORGAN_RECOVERY_THRESHOLD (5 MINUTES)
@@ -205,15 +216,22 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 	if(damage >= max_damage)
 		die()
 
+/**
+ * Handles per-second EMP damage effects.
+ * returns FALSE if there's no EMP effects left.
+ * returns "Truthy" if there's still more EMP to handle on the next tick.
+ * It will wrap back around to FALSE if the surge damage recovery ticked it back down to 0.
+ */
 /obj/item/organ/proc/tick_surge_damage(seconds_per_tick)
 	ENFORCE_CALCULUS(seconds_per_tick)
 
 	if(!surge_damage)
 		clear_surge_effects()
-		return
+		return FALSE
 
 	do_surge_effects()
 	surge_damage = max(0, surge_damage - (surge_recovery_per_second * seconds_per_tick))
+	return surge_damage
 
 /obj/item/organ/proc/do_surge_effects()
 	return
@@ -485,7 +503,7 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 	forceMove(owner) //just in case
 	if(BP_IS_ROBOTIC(src))
 		set_dna(owner.dna)
-	return 1
+	return TRUE
 
 /obj/item/organ/internal/eyes/replaced(var/mob/living/carbon/human/target)
 
@@ -524,3 +542,16 @@ INITIALIZE_IMMEDIATE(/obj/item/organ)
 //used by stethoscope
 /obj/item/organ/proc/listen()
 	return
+
+/obj/item/organ/proc/get_damage()
+	return damage
+
+/obj/item/organ/proc/set_damage(to_set)
+	damage = to_set
+	START_PROCESSING(SSprocessing, src)
+
+/obj/item/organ/add_damage(to_add)
+	START_PROCESSING(SSprocessing, src)
+	if (..(to_add))
+		return
+	damage += to_add

code/modules/organs/organ_external.dm

@@ -192,8 +192,6 @@
 	var/is_emissive = FALSE
 	/// Whether the limb has an active overlay icon state associated with it
 	var/is_overlay = FALSE
-	/// Whether the limb is a tesla limb (required for special handling)
-	var/is_tesla = FALSE
 
 /obj/item/organ/external/Initialize(mapload)
 	if(robotize_type)
@@ -226,7 +224,6 @@
 		limb_flags &= ~ORGAN_HAS_TENDON
 
 /obj/item/organ/external/Destroy()
-
 	if(parent?.children)
 		parent.children -= src
 
@@ -359,6 +356,8 @@
 /obj/item/organ/external/proc/dislocate(var/primary)
 	if(dislocated == -1)
 		return
+
+	START_PROCESSING(SSprocessing, src)
 	if(primary)
 		dislocated = 2
 	else
@@ -372,6 +371,7 @@
 	if(dislocated == -1)
 		return
 
+	START_PROCESSING(SSprocessing, src)
 	dislocated = 0
 	if(children && children.len)
 		for(var/obj/item/organ/external/child in children)
@@ -385,11 +385,12 @@
 		remove_verb(owner, /mob/living/carbon/human/proc/undislocate)
 
 /obj/item/organ/external/update_organ_health()
+	START_PROCESSING(SSprocessing, src)
 	damage = min(max_damage, (brute_dam + burn_dam))
 
-/obj/item/organ/external/replaced(var/mob/living/carbon/human/target)
-	..()
-
+/obj/item/organ/external/replaced(mob/living/carbon/human/target)
+	. = ..()
+	START_PROCESSING(SSprocessing, src)
 	if(istype(owner))
 		owner.organs_by_name[limb_name] = src
 		owner.organs |= src
@@ -438,11 +439,12 @@
 	brute = round(brute * brute_mod, 0.1)
 	burn = round(burn * burn_mod, 0.1)
 	if((brute <= 0) && (burn <= 0))
-		return 0
+		return FALSE
 
 	if(damage_flags & DAMAGE_FLAG_IGNORE_PROSTHETICS && BP_IS_ROBOTIC(src))
-		return 0
+		return FALSE
 
+	START_PROCESSING(SSprocessing, src)
 	var/laser = (damage_flags & DAMAGE_FLAG_LASER)
 	var/sharp = (damage_flags & DAMAGE_FLAG_SHARP)
 	var/edge = (damage_flags & DAMAGE_FLAG_EDGE)
@@ -548,7 +550,7 @@
 	var/list/victims = list()
 	var/organ_hit_chance = 0
 	for(var/obj/item/organ/internal/I in internal_organs)
-		if(I.damage < I.max_damage)
+		if(I.get_damage() < I.max_damage)
 			victims[I] = I.relative_size
 			organ_hit_chance += I.relative_size
 
@@ -569,6 +571,7 @@
 		var/obj/item/organ/internal/victim = pickweight(victims)
 		damage_amt -= max(damage_amt*victim.damage_reduction, 0)
 		victim.take_internal_damage(damage_amt)
+		START_PROCESSING(SSprocessing, src)
 		return TRUE
 
 /obj/item/organ/external/proc/handle_limb_gibbing(var/used_weapon, var/brute, var/burn)
@@ -628,7 +631,7 @@
 	SEND_SIGNAL(src, COMSIG_UPDATE_LIMB_IMAGE)
 
 	owner.updatehealth()
-
+	START_PROCESSING(SSprocessing, src)
 	return update_icon()
 
 /*
@@ -658,12 +661,12 @@ This function completely restores a damaged organ to perfect condition.
 		tendon.rejuvenate()
 
 	owner.updatehealth()
-
+	START_PROCESSING(SSprocessing, src)
 
 /obj/item/organ/external/proc/createwound(type = INJURY_TYPE_CUT, damage)
 	if(damage <= 0 || !owner)
 		return
-
+	START_PROCESSING(SSprocessing, src)
 	//moved this before the open_wound check so that having many small wounds for example doesn't somehow protect you from taking internal damage (because of the return)
 	//Possibly trigger an internal wound, too.
 	var/local_damage = brute_dam + burn_dam + damage
@@ -768,70 +771,50 @@ This function completely restores a damaged organ to perfect condition.
 
 //Determines if we even need to process this organ.
 /obj/item/organ/external/proc/need_process()
-	if(BP_IS_ROBOTIC(src) && surge_damage)
-		return TRUE
-	if(is_tesla && owner)
-		return TRUE
 	if(BP_IS_ROBOTIC(src))
-		return FALSE
-	if(get_pain())
-		return TRUE
-	if(status & (ORGAN_CUT_AWAY|ORGAN_BLEEDING|ORGAN_BROKEN|ORGAN_DESTROYED|ORGAN_SPLINTED|ORGAN_DEAD|ORGAN_MUTATED))
-		return TRUE
-	if(brute_dam || burn_dam)
+		return surge_damage
+	if(get_pain() || status & (ORGAN_CUT_AWAY|ORGAN_BLEEDING|ORGAN_BROKEN|ORGAN_DESTROYED|ORGAN_SPLINTED|ORGAN_DEAD|ORGAN_MUTATED|ORGAN_ARTERY_CUT) || brute_dam || burn_dam)
 		return TRUE
 	if(last_dam != brute_dam + burn_dam) // Process when we are fully healed up.
 		last_dam = brute_dam + burn_dam
 		return TRUE
 	else
 		last_dam = brute_dam + burn_dam
-	if(germ_level)
-		return TRUE
-	return FALSE
+	return germ_level
 
 /obj/item/organ/external/process(seconds_per_tick)
-	if(owner)
-		//Specialized handling for tesla limbs. Checks if the limb currently has an associated tesla spine. Else, will disable the emissive and active overlays
-		if(is_tesla)
-			var/obj/item/organ/internal/augment/tesla/T = owner.internal_organs_by_name[BP_AUG_TESLA]
-			if(T && !T.is_broken())
-				is_emissive = initial(is_emissive)
-				is_overlay = initial(is_overlay)
-			else
-				is_emissive = FALSE
-				is_overlay = FALSE
-			return
+	. = ..()
+	if (!need_process())
+		return PROCESS_KILL
 
-		// Process wounds, doing healing etc. Only do this every few ticks to save processing power
-		if(owner.life_tick % wound_update_accuracy == 0)
-			update_wounds()
+	if(!owner)
+		return
 
-		//Chem traces slowly vanish
-		if(owner.life_tick % 10 == 0)
-			for(var/chemID in trace_chemicals)
-				trace_chemicals[chemID] = trace_chemicals[chemID] - 1
-				if(trace_chemicals[chemID] <= 0)
-					trace_chemicals.Remove(chemID)
+	// Process wounds, doing healing etc. Only do this every few ticks to save processing power
+	if(owner.life_tick % wound_update_accuracy == 0)
+		update_wounds()
 
-		if(!(status & ORGAN_BROKEN))
-			perma_injury = 0
+	//Chem traces slowly vanish
+	if(owner.life_tick % 10 == 0)
+		for(var/chemID in trace_chemicals)
+			trace_chemicals[chemID] = trace_chemicals[chemID] - 1
+			if(trace_chemicals[chemID] <= 0)
+				trace_chemicals.Remove(chemID)
 
-		if(status & ORGAN_NYMPH)
-			var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-			N.handle_nymph(src)
+	if(!(status & ORGAN_BROKEN))
+		perma_injury = 0
 
-		if(surge_damage && (status & ORGAN_ASSISTED))
-			tick_surge_damage(seconds_per_tick) //Yes, this being here is intentional since this proc does not call ..() unless the owner is null.
+	if(surge_damage && (status & ORGAN_ASSISTED))
+		tick_surge_damage(seconds_per_tick) //Yes, this being here is intentional since this proc does not call ..() unless the owner is null.
 
-		//Infections
-		update_germs()
+	//Infections
+	update_germs()
 
-		//check if an online RIG can splint the broken bone
-		check_rigsplints()
-	else
-		..()
+	//check if an online RIG can splint the broken bone
+	check_rigsplints()
 
 /obj/item/organ/external/do_surge_effects()
+	START_PROCESSING(SSprocessing, src)
 	if(prob(surge_damage))
 		owner.custom_pain("The artificial nerves in your [name] scream out in pain!", surge_damage/6)
 
@@ -898,6 +881,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	for(var/datum/wound/W as anything in wounds)
 		//Open wounds can become infected
 		if (owner.germ_level > W.germ_level && W.infection_check())
+			START_PROCESSING(SSprocessing, src)
 			W.germ_level++
 			if(!increased_own_germs && antibiotics < 5 && W.germ_level > germ_level)
 				germ_level++
@@ -928,6 +912,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 		infect_target_external = null
 		return ..()
 
+	START_PROCESSING(SSprocessing, src)
 	germ_level++
 
 	if(germ_level >= INFECTION_LEVEL_TWO && REAGENT_VOLUME(owner.reagents, /singleton/reagent/thetamycin) < 5) //The presence of 5 units of thetamycin will stop infections spreading
@@ -1293,6 +1278,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if(QDELETED(owner))
 		return
 
+	START_PROCESSING(SSprocessing, src)
 	if(!silent)
 		var/message = pick("broke in half", "shattered")
 		owner.visible_message(\
@@ -1358,9 +1344,13 @@ Note that amputating the affected organ does in fact remove the infection from t
 			else
 				is_overlay = FALSE
 			if(R.is_tesla)
-				is_tesla = TRUE
-			else
-				is_tesla = FALSE
+				// We don't know if the tesla limb or the tesla spine spawned first.
+				// So both will attempt to check for each other once during init.
+				var/obj/item/organ/internal/augment/tesla/T = owner?.internal_organs_by_name[BP_AUG_TESLA]
+				if (T && !T.is_broken())
+					is_emissive = TRUE
+					is_overlay = TRUE
+
 			brute_mod = R.brute_mod
 			burn_mod = R.burn_mod
 			robotize_type = company
@@ -1389,6 +1379,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if(BP_IS_ROBOTIC(src))
 		return
 	src.status |= ORGAN_MUTATED
+	START_PROCESSING(SSprocessing, src)
 	if(owner) owner.update_body()
 
 /obj/item/organ/external/proc/unmutate()
@@ -1396,7 +1387,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 		src.status &= ~ORGAN_MUTATED
 		if(owner) owner.update_body()
 
-/obj/item/organ/external/proc/get_damage()	//returns total damage
+/obj/item/organ/external/get_damage()	//returns total damage
 	return max(brute_dam + burn_dam - perma_injury, perma_injury)	//could use max_damage?
 
 /obj/item/organ/external/proc/has_infected_wound()
@@ -1461,6 +1452,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if(!supplied_wound || (W in supplied_wound.embedded_objects)) // Just in case.
 		return
 
+	START_PROCESSING(SSprocessing, src)
 	LAZYADD(supplied_wound.embedded_objects, W)
 	implants += W
 	owner.embedded_flag = 1
@@ -1474,7 +1466,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 #undef EMBED_BASE_DAMAGE
 
 /obj/item/organ/external/removed(var/mob/living/user, var/ignore_children = 0)
-
+	START_PROCESSING(SSprocessing, src)
 	if(!owner)
 		return
 	var/is_robotic = BP_IS_ROBOTIC(src)
@@ -1544,6 +1536,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 			owner.visible_message(SPAN_WARNING("\The [owner]'s [name] melts away, turning into a mangled mess!"),	\
 			SPAN_DANGER("Your [name] melts away!"),	\
 			SPAN_WARNING("You hear a sickening sizzle."))
+	START_PROCESSING(SSprocessing, src)
 	disfigured = 1
 
 /obj/item/organ/external/proc/get_wounds_desc()
@@ -1648,6 +1641,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 		return FALSE
 	else
 		status |= ORGAN_ARTERY_CUT
+		START_PROCESSING(SSprocessing, src)
 		return TRUE
 
 /obj/item/organ/external/proc/tendon_status()
@@ -1737,6 +1731,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	if(amount > 5 && owner)
 		owner.undo_srom_pull()
 	SEND_SIGNAL(src, COMSIG_UPDATE_LIMB_IMAGE)
+	START_PROCESSING(SSprocessing, src)
 	return pain-last_pain
 
 /mob/living/carbon/human/proc/undo_srom_pull()

code/modules/organs/pain.dm

@@ -83,7 +83,7 @@
 
 	// Damage to internal organs hurts a lot.
 	for(var/obj/item/organ/internal/I in internal_organs)
-		if(prob(1) && !((I.status & ORGAN_DEAD) || BP_IS_ROBOTIC(I)) && I.damage > 5 && I.parent_organ)
+		if(prob(1) && !((I.status & ORGAN_DEAD) || BP_IS_ROBOTIC(I)) && I.get_damage() > 5 && I.parent_organ)
 			var/obj/item/organ/external/parent = get_organ(I.parent_organ)
 			if (!parent) continue
 			var/pain = 10

code/modules/organs/subtypes/augment/augment.dm

@@ -35,6 +35,9 @@
 	/// If true, will make parent limb not count as broken, as long as it's not bruised (40%) and not broken (0%)
 	var/supports_limb = FALSE
 
+/obj/item/organ/internal/augment/process_initialize()
+	return
+
 /obj/item/organ/internal/augment/Initialize()
 	if(robotic == ROBOTIC_MECHANICAL)
 		robotize()

code/modules/organs/subtypes/augment/augments/emotional_manipulator.dm

@@ -18,6 +18,9 @@
 		"Calmness",
 	)
 
+/obj/item/organ/internal/augment/emotional_manipulator/process_initialize()
+	START_PROCESSING(SSprocessing, src)
+
 /obj/item/organ/internal/augment/emotional_manipulator/attack_self(var/mob/user)
 	. = ..()
 

code/modules/organs/subtypes/augment/augments/fluff.dm

@@ -9,12 +9,6 @@
 	if (owner)
 		to_chat(owner, SPAN_DANGER("You sense your [name] stops functioning!"))
 
-/obj/item/organ/internal/augment/head_fluff/process()
-	..()
-	if (is_broken() && !ORGAN_DEAD)
-		if (prob(5))
-			to_chat(owner, SPAN_WARNING("You sense your [name] isn't working right!"))
-
 /obj/item/organ/internal/augment/head_fluff/removed()
 	if (owner)
 		to_chat(owner, SPAN_DANGER("You lose your connection with \the [name]!"))

code/modules/organs/subtypes/augment/augments/mind_blanker.dm

@@ -13,6 +13,9 @@
 	/// Time until the next ongoing message
 	var/next_message = 0
 
+/obj/item/organ/internal/augment/bioaug/mind_blanker/process_initialize()
+	START_PROCESSING(SSprocessing, src)
+
 /obj/item/organ/internal/augment/bioaug/mind_blanker/Initialize()
 	. = ..()
 	if(!owner)

code/modules/organs/subtypes/augment/augments/tesla.dm

@@ -42,6 +42,64 @@
 		playsound(owner, 'sound/magic/LightningShock.ogg', 75, 1)
 		tesla_zap(owner, 7, 1500)
 
+/// Toggles all of an owner's tesla augs.
+/obj/item/organ/internal/augment/tesla/proc/toggle_tesla_augs(toggle)
+	if (!owner)
+		return
+
+	if (is_broken()) // Broken tesla spines will ALWAYS toggle the overlays off when this proc is called.
+		toggle = FALSE
+
+	for (var/obj/item/organ/external/organ in owner.organs)
+		if (!model)
+			continue
+
+		var/datum/robolimb/R = GLOB.all_robolimbs[model]
+		if (!R || !R.is_tesla)
+			continue
+
+		organ.is_emissive = toggle
+		organ.is_overlay = toggle
+
+/**
+ * Tesla spines power all tesla augs, and if they break, the lights go out.
+ */
+/obj/item/organ/internal/augment/tesla/take_damage(amount, silent)
+	. = ..()
+	toggle_tesla_augs(FALSE)
+
+/obj/item/organ/internal/augment/tesla/Initialize()
+	. = ..()
+	toggle_tesla_augs(TRUE)
+
+/obj/item/organ/internal/augment/tesla/Destroy()
+	toggle_tesla_augs(FALSE)
+	return ..()
+
+/obj/item/organ/internal/augment/tesla/take_surge_damage(surge)
+	. = ..()
+	toggle_tesla_augs(FALSE)
+
+/obj/item/organ/internal/augment/tesla/clear_surge_effects()
+	. = ..()
+	toggle_tesla_augs(TRUE)
+
+/obj/item/organ/internal/augment/tesla/rejuvenate()
+	. = ..()
+	toggle_tesla_augs(TRUE)
+
+/obj/item/organ/internal/augment/tesla/heal_damage()
+	. = ..()
+	toggle_tesla_augs(TRUE)
+
+/obj/item/organ/internal/augment/tesla/removed(mob/living/carbon/human/target, mob/living/user, drop_organ = TRUE, detach = TRUE)
+	toggle_tesla_augs(FALSE) // Toggle the owner's augs before letting the base organ proc trigger
+	return ..()
+
+/obj/item/organ/internal/augment/tesla/replaced()
+	. = ..()
+	toggle_tesla_augs(TRUE)
+
 /obj/item/organ/internal/augment/tesla/advanced
 	name = "advanced tesla spine"
 	max_charges = 15

code/modules/organs/subtypes/nymph_limbs.dm

@@ -4,14 +4,7 @@
 
 /obj/item/organ/external/leg/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
-
-/obj/item/organ/external/leg/nymph/process()
-	..()
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.handle_nymph(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Right Leg
 /obj/item/organ/external/leg/right/nymph
@@ -19,14 +12,7 @@
 
 /obj/item/organ/external/leg/right/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
-
-/obj/item/organ/external/leg/right/nymph/process()
-	..()
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.handle_nymph(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Left Arm
 /obj/item/organ/external/arm/nymph
@@ -34,14 +20,7 @@
 
 /obj/item/organ/external/arm/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
-
-/obj/item/organ/external/arm/nymph/process()
-	..()
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.handle_nymph(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Right Arm
 /obj/item/organ/external/arm/right/nymph
@@ -49,50 +28,35 @@
 
 /obj/item/organ/external/arm/right/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
-
-/obj/item/organ/external/arm/right/nymph/process()
-	..()
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.handle_nymph(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Left Hand
 /obj/item/organ/external/hand/nymph
 
 /obj/item/organ/external/hand/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Right Hand
 /obj/item/organ/external/hand/right/nymph
 
 /obj/item/organ/external/hand/right/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Left Foot
 /obj/item/organ/external/foot/nymph
 
 /obj/item/organ/external/foot/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 // Right Foot
 /obj/item/organ/external/foot/right/nymph
 
 /obj/item/organ/external/foot/right/nymph/Initialize()
 	. = ..()
-	AddComponent(/datum/component/nymph_limb)
-	var/datum/component/nymph_limb/N = GetComponent(/datum/component/nymph_limb)
-	N.setup_limb(src)
+	AddComponent(/datum/component/nymph_limb, src)
 
 /datum/component/nymph_limb
 	var/list/valid_species = list(SPECIES_UNATHI, SPECIES_SKRELL, SPECIES_SKRELL_AXIORI)
@@ -120,7 +84,51 @@
 		BP_R_FOOT = /obj/item/organ/external/foot/right/nymph
 	)
 
-/datum/component/nymph_limb/proc/setup_limb(var/obj/item/organ/external/E)
+	/// Typecasted owner of the component as an external limb.
+	var/obj/item/organ/external/limb
+
+/datum/component/nymph_limb/Initialize(obj/item/organ/external/E)
+	. = ..()
+	if (!istype(E))
+		qdel(src)
+		stack_trace("[src] was added to an entity that was not of type obj/item/organ/external. This component REQUIRES an external limb, and will delete itself immediately if one isn't provided to its AddComponent args.")
+		return
+
+	setup_limb(E)
+	START_PROCESSING(SSprocessing, src)
+
+/datum/component/nymph_limb/process()
+	. = ..()
+	if (!limb)
+		qdel(src)
+		return PROCESS_KILL
+
+	var/mob/living/carbon/alien/diona/limb_nymph = limb.nymph
+	if(!istype(limb_nymph) || !limb || !is_type_in_list(limb, nymph_limb_types))
+		qdel(src)
+		return PROCESS_KILL
+
+	if((!limb.owner || limb_nymph.stat == DEAD))
+		nymph_out(limb, limb_nymph)
+		return PROCESS_KILL
+
+	if(!limb.is_usable())
+		nymph_out(limb, limb_nymph, forced = TRUE)
+		return PROCESS_KILL
+
+	var/blood_volume = round(REAGENT_VOLUME(limb.owner.vessel, /singleton/reagent/blood))
+	if(!blood_volume)
+		nymph_out(limb, limb_nymph, forced = TRUE)
+		return PROCESS_KILL
+
+	if(REAGENT_DATA(limb.owner.vessel, /singleton/reagent/blood))
+		limb.owner.vessel.remove_reagent(/singleton/reagent/blood, BLOOD_REGEN_RATE / (2 * nymph_limb_types_by_name.len))
+	if(blood_volume <= 0)
+		nymph_out(limb, limb_nymph, forced = TRUE)
+		return PROCESS_KILL
+
+/datum/component/nymph_limb/proc/setup_limb(obj/item/organ/external/E)
+	limb = E
 	if(is_type_in_list(E, nymph_limb_types))
 		E.nymph = new /mob/living/carbon/alien/diona
 
@@ -133,28 +141,6 @@
 
 	E.limb_flags &= ~(ORGAN_CAN_BREAK | ORGAN_CAN_MAIM | ORGAN_HAS_TENDON)
 
-// Called by process()
-/datum/component/nymph_limb/proc/handle_nymph(var/obj/item/organ/external/E)
-	var/mob/living/carbon/alien/diona/limb_nymph = E.nymph
-	if(!istype(limb_nymph))
-		return FALSE
-	if(!E || !is_type_in_list(E, nymph_limb_types))
-		return FALSE
-	if((!E.owner || limb_nymph.stat == DEAD))
-		nymph_out(E, limb_nymph)
-		return FALSE
-
-	if(!E.is_usable())
-		nymph_out(E, limb_nymph, forced = TRUE)
-		return FALSE
-
-	var/blood_volume = round(REAGENT_VOLUME(E.owner.vessel, /singleton/reagent/blood))
-	if(blood_volume)
-		if(REAGENT_DATA(E.owner.vessel, /singleton/reagent/blood))
-			E.owner.vessel.remove_reagent(/singleton/reagent/blood, BLOOD_REGEN_RATE / (2 * nymph_limb_types_by_name.len))
-	if(blood_volume <= 0)
-		nymph_out(E, limb_nymph, forced = TRUE)
-
 // Host detach
 /mob/living/carbon/human/proc/detach_nymph_limb()
 	set category = "Abilities"

code/modules/organs/subtypes/parasite/tumours.dm

@@ -134,7 +134,7 @@
 				if(BP_IS_ROBOTIC(O))
 					continue
 				if(SPT_PROB(stage*stage, seconds_per_tick))
-					O.damage = min(O.damage+stage, O.max_damage)
+					O.set_damage(min(O.get_damage() + stage, O.max_damage))
 
 	if(stage >= 4) //after 15 minutes
 		if(SPT_PROB(3, seconds_per_tick))

code/modules/psionics/abilities/mend.dm

@@ -37,13 +37,13 @@
 	to_chat(user, SPAN_NOTICE("You start by flowing your regenerative psionic energy through their vital organs..."))
 	for(var/obj/item/organ/O in H.internal_organs)
 		if(do_mob(user, H, 15 SECONDS))
-			if(O.damage > 0) // Fix internal damage
+			if(O.get_damage() > 0) // Fix internal damage
 				to_chat(user, SPAN_NOTICE("You mend their [O]'s bruising."))
-				O.heal_damage(O.damage)
+				O.heal_damage(O.get_damage())
 			if((O.status & ORGAN_BROKEN))
 				to_chat(user, SPAN_NOTICE("You restart their [O]'s functionality."))
 				O.status &= ~ORGAN_BROKEN
-			if(O.damage <= 5 && O.organ_tag == BP_EYES) // Fix eyes
+			if(O.get_damage() <= 5 && O.organ_tag == BP_EYES) // Fix eyes
 				H.sdisabilities &= ~BLIND
 
 	to_chat(user, SPAN_NOTICE("You continue by flowing your regenerative psionic energy through their limbs..."))
@@ -52,13 +52,13 @@
 			continue
 		if(do_mob(user, H, 15 SECONDS))
 			to_chat(user, SPAN_NOTICE("You mend their [O]'s bruising."))
-			O.heal_damage(0, O.damage, internal = TRUE, robo_repair = FALSE)
+			O.heal_damage(0, O.get_damage(), internal = TRUE, robo_repair = FALSE)
 
 	to_chat(user, SPAN_NOTICE("Finally, you begin flowing your regenerative psionic energy through their broken limbs..."))
 	for(var/obj/item/organ/E in H.bad_external_organs) // Fix bones
 		var/obj/item/organ/external/affected = E
 		if(do_mob(user, H, 10 SECONDS))
-			if((affected.damage < affected.min_broken_damage * GLOB.config.organ_health_multiplier) && (affected.status & ORGAN_BROKEN))
+			if((affected.get_damage() < affected.min_broken_damage * GLOB.config.organ_health_multiplier) && (affected.status & ORGAN_BROKEN))
 				to_chat(user, SPAN_NOTICE("You mend their [affected] together."))
 				affected.status &= ~ORGAN_BROKEN
 			if((affected.status & ORGAN_ARTERY_CUT))

code/modules/psionics/abilities/skinsight.dm

@@ -67,7 +67,7 @@
 					to_chat(user, SPAN_WARNING("You notice some irregularity in the psionic flow through their [I]."))
 				if(I.is_broken())
 					to_chat(user, SPAN_WARNING("Your psionic flow through their [I] is <b>highly irregular</b>."))
-				if(I.damage)
+				if(I.get_damage())
 					to_chat(user, SPAN_WARNING("You are sure there is some damage in their [I]."))
 			var/pulse = target.get_pulse()
 			to_chat(user, SPAN_NOTICE("Their pulse is [pulse]."))

code/modules/psionics/complexus/complexus_helpers.dm

@@ -86,7 +86,7 @@
 		var/mob/living/carbon/human/pop = owner
 		if(pop.should_have_organ(BP_BRAIN))
 			var/obj/item/organ/internal/brain/sponge = pop.internal_organs_by_name[BP_BRAIN]
-			if(sponge && sponge.damage >= sponge.max_damage)
+			if(sponge && sponge.get_damage() >= sponge.max_damage)
 				var/obj/item/organ/external/affecting = pop.get_organ(sponge.parent_organ)
 				if(affecting && !affecting.is_stump())
 					affecting.droplimb(0, DROPLIMB_BLUNT)

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm

@@ -249,7 +249,7 @@
 			for(var/obj/item/organ/internal/I in H.internal_organs)
 				if(!BP_IS_ROBOTIC(I))
 					if(I.organ_tag == BP_BRAIN)
-						var/brain_activity = 100 - ((I.damage / I.max_damage) * 100) //converts brain damage to a percentage, to calculate BA
+						var/brain_activity = 100 - ((I.get_damage() / I.max_damage) * 100) //converts brain damage to a percentage, to calculate BA
 						if(brain_activity >= 61) //will only treat brain activity below 61% brain activity
 							continue
 					I.heal_damage(4*removed)
@@ -283,7 +283,7 @@
 			for(var/obj/item/organ/internal/I in H.internal_organs)
 				if(!BP_IS_ROBOTIC(I))
 					if(I.organ_tag == BP_BRAIN)
-						var/brain_activity = 100 - ((I.damage / I.max_damage) * 100) //converts brain damage to a percentage, to calculate BA
+						var/brain_activity = 100 - ((I.get_damage() / I.max_damage) * 100) //converts brain damage to a percentage, to calculate BA
 						if(brain_activity >= 61) //will only treat brain activity below 61% brain activity
 							continue
 					I.heal_damage(4*removed)
@@ -658,10 +658,10 @@
 		var/mob/living/carbon/human/H = M
 		var/obj/item/organ/internal/eyes/E = H.get_eyes(no_synthetic = TRUE)
 		if(E && istype(E))
-			if(E.damage > 0)
-				E.damage = max(E.damage - 5 * removed, 0)
+			if(E.get_damage() > 0)
+				E.set_damage(max(E.get_damage() - 5 * removed, 0))
 		if(isvaurca(H))
-			if(E.damage < E.min_broken_damage && H.sdisabilities & BLIND)
+			if(E.get_damage() < E.min_broken_damage && H.sdisabilities & BLIND)
 				H.sdisabilities -= BLIND
 
 /singleton/reagent/oculine/affect_chem_effect(var/mob/living/carbon/M, var/alien, var/removed, var/datum/reagents/holder)
@@ -691,17 +691,17 @@
 
 		for(var/obj/item/organ/internal/I in H.internal_organs)
 			if(I.organ_tag == BP_BRAIN)
-				if(I.damage >= I.min_bruised_damage)
+				if(I.get_damage() >= I.min_bruised_damage)
 					continue
-			if((I.damage > 0) && (I.robotic != 2)) //Peridaxon heals only non-robotic organs
+			if((I.get_damage() > 0) && (I.robotic != 2)) //Peridaxon heals only non-robotic organs
 				var/damage_healed = ((M.bodytemperature < 186) && M.chem_effects[CE_CRYO]) ? 2 : 1 //2x effective if administered in cryogenic conditions
-				I.damage = max(I.damage - damage_healed*removed, 0)
+				I.set_damage(max(I.get_damage() - damage_healed*removed, 0))
 
 		if((M.bodytemperature < 153) && M.chem_effects[CE_ANTIBIOTIC]) //peridaxon in extracool cryogenic conditions alongside antibiotics will have a chance to de-nercotise liver and kidneys, though will incur overdose symptoms
 			H.infest_with_parasite(H, BP_TUMOUR_NONSPREADING, pick(H.organs), 10)
 			for(var/obj/item/organ/internal/O in H.internal_organs)
 				if((O.organ_tag == BP_LIVER) || (O.organ_tag == BP_KIDNEYS))
-					if(O.damage && prob(5))
+					if(O.get_damage() && prob(5))
 						if((O.status & ORGAN_DEAD) && !BP_IS_ROBOTIC(O))
 							if(O.can_recover())
 								O.status &= ~ORGAN_DEAD
@@ -1485,12 +1485,14 @@
 	var/obj/item/organ/internal/brain = M.internal_organs_by_name[BP_BRAIN]
 	if((M.bodytemperature < 179) && (M.chem_effects[CE_CRYO])) //best use in cryogenics, experiment with Balanced or Prioritising Metabolisation settings, aiming for a gas cooler temperature target that minimises the cryostasis multiplier. remember the cryotube heats slowly when someone is inside.
 		if(brain)
-			if(brain.damage && brain.damage < brain.max_damage && !(M.chem_effects[CE_NEUROTOXIC])) //skips the oxygenation check under brain.dm
-				brain.damage = max(brain.damage - 16*removed, 0) //high number, as cryo slows metabolism. also needs to slightly outpace rough injuries to actually make it worthwhile to use.
+			var/brain_damage = brain.get_damage()
+			if(brain_damage && brain_damage < brain.max_damage && !(M.chem_effects[CE_NEUROTOXIC])) //skips the oxygenation check under brain.dm
+				brain.set_damage(max(brain_damage - 16*removed, 0)) //high number, as cryo slows metabolism. also needs to slightly outpace rough injuries to actually make it worthwhile to use.
 	else //without cryogenics. skips the oxygen check, however has large downsides if not pushed thorugh an IV to moderate volume in blood.
 		if(brain)
-			if(brain.damage && brain.damage < brain.max_damage && !(M.chem_effects[CE_NEUROTOXIC]) && prob(75))
-				brain.damage = max(brain.damage - 8*removed, 0) //pretty slow, non-guaranteed brain healing - 75% chance of restoring 2.5% brain activity per tick. only really useful during apocalyptic scenarios.
+			var/brain_damage = brain.get_damage()
+			if(brain_damage && brain_damage < brain.max_damage && !(M.chem_effects[CE_NEUROTOXIC]) && prob(75))
+				brain.set_damage(max(brain_damage - 8*removed, 0)) //pretty slow, non-guaranteed brain healing - 75% chance of restoring 2.5% brain activity per tick. only really useful during apocalyptic scenarios.
 		M.dizziness = max(200, M.dizziness + 15)
 		M.hallucination = max(M.hallucination, 100)
 		M.add_chemical_effect(CE_BLOODTHIN, 40) //treat (arterial) bleeding first
@@ -1780,7 +1782,7 @@
 	M.add_chemical_effect(CE_CARDIOTOXIC, -removed*2)
 	var/obj/item/organ/internal/heart/H = M.internal_organs_by_name[BP_HEART]
 	if(istype(H) && !BP_IS_ROBOTIC(H))
-		H.damage = max(H.damage - (removed * 2), 0)
+		H.set_damage(max(H.get_damage() - (removed * 2), 0))
 	..()
 
 /singleton/reagent/adipemcina/overdose(var/mob/living/carbon/human/M, var/alien, var/datum/reagents/holder)

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm

@@ -25,7 +25,7 @@
 			if(target_organ)
 				var/obj/item/organ/internal/I = H.internal_organs_by_name[target_organ]
 				if(I)
-					var/can_damage = I.max_damage - I.damage
+					var/can_damage = I.max_damage - I.get_damage()
 					if(can_damage > 0)
 						if(dam > can_damage)
 							I.take_internal_damage(can_damage, silent=TRUE)

code/modules/spell_system/spells/spell_list/others/generic/mend.dm

@@ -73,9 +73,9 @@
 			return 1
 
 		for(var/obj/item/organ/I in E.internal_organs)
-			if(I.robotic < ORGAN_ROBOT && I.damage > 0)
+			if(I.robotic < ORGAN_ROBOT && I.get_damage() > 0)
 				to_chat(user, SPAN_NOTICE("You encourage the damaged tissue of \the [I] to repair itself."))
-				I.damage = max(0, I.damage - rand(3,5))
+				I.set_damage(max(0, I.get_damage() - rand(3,5)))
 				return 1
 
 		to_chat(user, SPAN_NOTICE("You can find nothing within \the [target]'s [E.name] to mend."))

code/modules/surgery/organs_internal.dm

@@ -340,7 +340,7 @@
 		return FALSE
 	else if(target.species.has_organ[O.organ_tag] || O.is_augment)
 
-		if(O.damage > (O.max_damage * 0.75))
+		if(O.get_damage() > (O.max_damage * 0.75))
 			to_chat(user, SPAN_WARNING("\The [O.organ_tag] [o_is] in no state to be transplanted."))
 			return SURGERY_FAILURE
 

code/modules/surgery/other.dm

@@ -78,7 +78,7 @@
 			break
 	if(!organ)
 		return
-	if(organ.damage > organ.max_damage)
+	if(organ.get_damage() > organ.max_damage)
 		to_chat(user, SPAN_WARNING("\The [organ] is too damaged. Repair it first."))
 		return 0
 

code/modules/tgui/modules/ipc_diagnostic.dm

@@ -52,7 +52,7 @@
 
 			organ_data["name"] = organ.name
 			organ_data["desc"] = organ.desc
-			organ_data["damage"] = edit_organ_status(organ.damage, diagnostics)
+			organ_data["damage"] = edit_organ_status(organ.get_damage(), diagnostics)
 			organ_data["max_damage"] = organ.max_damage
 
 			data["organs"] += list(organ_data)

code/modules/tgui/modules/neural_configuration.dm

@@ -22,7 +22,7 @@
 	var/list/data = list()
 	var/obj/item/organ/internal/machine/posibrain/posibrain = owner.internal_organs_by_name[BP_BRAIN]
 	if(istype(posibrain))
-		data["neural_coherence"] = posibrain.damage
+		data["neural_coherence"] = posibrain.get_damage()
 		data["max_neural_coherence"] = posibrain.max_damage
 		data["owner_real_name"] = posibrain.owner.real_name
 		data["firewall"] = posibrain.firewall