Replaces HEALS_EARS_2 with a component, adds a wearertargeting parent component for future use

code/datums/components/earhealing.dm

@@ -0,0 +1,30 @@
+// An item worn in the ear slot with this component will heal your ears each
+// Life() tick, even if normally your ears would be too damaged to heal.
+
+/datum/component/earhealing
+	var/mob/living/carbon/wearer
+
+/datum/component/earhealing/Initialize()
+	if(!isitem(parent))
+		return COMPONENT_INCOMPATIBLE
+	RegisterSignal(list(COMSIG_ITEM_EQUIPPED, COMSIG_ITEM_DROPPED), .proc/equippedChanged)
+
+/datum/component/earhealing/proc/equippedChanged(mob/living/carbon/user, slot)
+	if (slot == SLOT_EARS && istype(user))
+		if (!wearer)
+			START_PROCESSING(SSobj, src)
+		wearer = user
+	else
+		if (wearer)
+			STOP_PROCESSING(SSobj, src)
+		wearer = null
+
+/datum/component/earhealing/process()
+	if (!wearer)
+		STOP_PROCESSING(SSobj, src)
+		return
+	if(!wearer.has_trait(TRAIT_DEAF))
+		var/obj/item/organ/ears/ears = wearer.getorganslot(ORGAN_SLOT_EARS)
+		if (ears)
+			ears.deaf = max(ears.deaf - 1, (ears.ear_damage < UNHEALING_EAR_DAMAGE ? 0 : 1)) // Do not clear deafness while above the unhealing ear damage threshold
+			ears.ear_damage = max(ears.ear_damage - 0.1, 0)