Ports elements: Lightweight shared/global components.

code/datums/components/earprotection.dm

@@ -1,11 +0,0 @@
-/datum/component/wearertargeting/earprotection
-	signals = list(COMSIG_CARBON_SOUNDBANG)
-	mobtype = /mob/living/carbon
-	proctype = .proc/reducebang
-
-/datum/component/wearertargeting/earprotection/Initialize(_valid_slots)
-	. = ..()
-	valid_slots = _valid_slots
-
-/datum/component/wearertargeting/earprotection/proc/reducebang(datum/source, list/reflist)
-	reflist[1]--

code/datums/components/mood.dm

@@ -248,7 +248,7 @@
 	var/datum/hud/hud = owner.hud_used
 	screen_obj = new
 	hud.infodisplay += screen_obj
-	RegisterSignal(hud, COMSIG_PARENT_QDELETED, .proc/unmodify_hud)
+	RegisterSignal(hud, COMSIG_PARENT_QDELETING, .proc/unmodify_hud)
 	RegisterSignal(screen_obj, COMSIG_CLICK, .proc/hud_click)
 
 /datum/component/mood/proc/unmodify_hud(datum/source)

code/datums/components/virtual_reality.dm

@@ -12,7 +12,7 @@
 		return COMPONENT_INCOMPATIBLE
 	var/mob/vr_M = parent
 	mastermind = M.mind
-	RegisterSignal(M, list(COMSIG_MOB_DEATH, COMSIG_PARENT_QDELETED), .proc/game_over)
+	RegisterSignal(M, list(COMSIG_MOB_DEATH, COMSIG_PARENT_QDELETING), .proc/game_over)
 	RegisterSignal(M, COMSIG_MOB_KEY_CHANGE, .proc/switch_player)
 	RegisterSignal(mastermind, COMSIG_MIND_TRANSFER, .proc/switch_player)
 	you_die_in_the_game_you_die_for_real = yolo
@@ -32,7 +32,7 @@
 	current_mind = M.mind
 	quit_action.Grant(M)
 	RegisterSignal(quit_action, COMSIG_ACTION_TRIGGER, .proc/revert_to_reality)
-	RegisterSignal(M, list(COMSIG_MOB_DEATH, COMSIG_PARENT_QDELETED), .proc/game_over)
+	RegisterSignal(M, list(COMSIG_MOB_DEATH, COMSIG_PARENT_QDELETING), .proc/game_over)
 	RegisterSignal(M, COMSIG_MOB_GHOSTIZE, .proc/be_a_quitter)
 	RegisterSignal(M, COMSIG_MOB_KEY_CHANGE, .proc/pass_me_the_remote)
 	RegisterSignal(current_mind, COMSIG_MIND_TRANSFER, .proc/pass_me_the_remote)
@@ -42,7 +42,7 @@
 
 /datum/component/virtual_reality/UnregisterFromParent()
 	quit_action.Remove(parent)
-	UnregisterSignal(parent, list(COMSIG_MOB_DEATH, COMSIG_PARENT_QDELETED, COMSIG_MOB_KEY_CHANGE, COMSIG_MOB_GHOSTIZE))
+	UnregisterSignal(parent, list(COMSIG_MOB_DEATH, COMSIG_PARENT_QDELETING, COMSIG_MOB_KEY_CHANGE, COMSIG_MOB_GHOSTIZE))
 	UnregisterSignal(current_mind, COMSIG_MIND_TRANSFER)
 	UnregisterSignal(quit_action, COMSIG_ACTION_TRIGGER)
 	current_mind = null

code/datums/elements/_element.dm

@@ -0,0 +1,29 @@
+/datum/element
+	var/element_flags = NONE
+
+/datum/element/proc/Attach(datum/target)
+	if(type == /datum/element)
+		return ELEMENT_INCOMPATIBLE
+	if(element_flags & ELEMENT_DETACH)
+		RegisterSignal(target, COMSIG_PARENT_QDELETING, .proc/Detach)
+
+/datum/element/proc/Detach(datum/source, force)
+	UnregisterSignal(source, COMSIG_PARENT_QDELETING)
+
+/datum/element/Destroy(force)
+	if(!force)
+		return QDEL_HINT_LETMELIVE
+	SSdcs.elements_by_type -= type
+	return ..()
+
+//DATUM PROCS
+
+/datum/proc/AddElement(eletype, ...)
+	var/datum/element/ele = SSdcs.GetElement(eletype)
+	args[1] = src
+	if(ele.Attach(arglist(args)) == ELEMENT_INCOMPATIBLE)
+		CRASH("Incompatible [eletype] assigned to a [type]! args: [json_encode(args)]")
+
+/datum/proc/RemoveElement(eletype)
+	var/datum/element/ele = SSdcs.GetElement(eletype)
+	ele.Detach(src)

code/datums/elements/cleaning.dm

@@ -1,13 +1,15 @@
-/datum/component/cleaning
-	dupe_mode = COMPONENT_DUPE_UNIQUE_PASSARGS
+/datum/element/cleaning/Attach(datum/target)
+	. = ..()
+	if(!ismovableatom(target))
+		return ELEMENT_INCOMPATIBLE
+	RegisterSignal(target, COMSIG_MOVABLE_MOVED, .proc/Clean)
 
-/datum/component/cleaning/Initialize()
-	if(!ismovableatom(parent))
-		return COMPONENT_INCOMPATIBLE
-	RegisterSignal(parent, list(COMSIG_MOVABLE_MOVED), .proc/Clean)
+/datum/element/cleaning/Detach(datum/target)
+	. = ..()
+	UnregisterSignal(target, COMSIG_MOVABLE_MOVED)
 
-/datum/component/cleaning/proc/Clean()
-	var/atom/movable/AM = parent
+/datum/element/cleaning/proc/Clean(datum/source)
+	var/atom/movable/AM = source
 	var/turf/T = AM.loc
 	SEND_SIGNAL(T, COMSIG_COMPONENT_CLEAN_ACT, CLEAN_WEAK)
 	for(var/A in T)
@@ -43,4 +45,4 @@
 				cleaned_human.clean_blood()
 				cleaned_human.wash_cream()
 				cleaned_human.regenerate_icons()
-				to_chat(cleaned_human, "<span class='danger'>[src] cleans your face!</span>")
+				to_chat(cleaned_human, "<span class='danger'>[src] cleans your face!</span>")

code/datums/elements/earhealing.dm

@@ -0,0 +1,37 @@
+
+/datum/element/earhealing
+	element_flags = ELEMENT_DETACH
+	var/list/user_by_item = list()
+
+/datum/element/earhealing/New()
+	START_PROCESSING(SSdcs, src)
+
+/datum/element/earhealing/Attach(datum/target)
+	. = ..()
+	if(!isitem(target))
+		return ELEMENT_INCOMPATIBLE
+
+	RegisterSignal(target, list(COMSIG_ITEM_EQUIPPED, COMSIG_ITEM_DROPPED), .proc/equippedChanged)
+
+/datum/element/earhealing/Detach(datum/target)
+	. = ..()
+	UnregisterSignal(target, list(COMSIG_ITEM_EQUIPPED, COMSIG_ITEM_DROPPED))
+	user_by_item -= target
+
+/datum/element/earhealing/proc/equippedChanged(datum/source, mob/living/carbon/user, slot)
+	if(slot == SLOT_EARS && istype(user))
+		user_by_item[source] = user
+	else
+		user_by_item -= source
+
+/datum/element/earhealing/process()
+	for(var/i in user_by_item)
+		var/mob/living/carbon/user = user_by_item[i]
+		if(HAS_TRAIT(user, TRAIT_DEAF))
+			continue
+		var/obj/item/organ/ears/ears = user.getorganslot(ORGAN_SLOT_EARS)
+		if(!ears)
+			continue
+		ears.deaf = max(ears.deaf - 0.25, (ears.damage < ears.maxHealth ? 0 : 1)) // Do not clear deafness if our ears are too damaged
+		ears.damage = max(ears.damage - 0.025, 0)
+		CHECK_TICK