Merge remote-tracking branch 'upstream/master' into AnPrimAssistants

code/datums/components/crafting/recipes/recipes_clothing.dm

@@ -40,13 +40,23 @@
 	reqs = list(/obj/item/paper = 20)
 	category = CAT_CLOTHING
 
+/datum/crafting_recipe/balaclavabreath
+	name = "Breathaclava"
+	result = /obj/item/clothing/mask/balaclava/breath
+	time = 10
+	reqs = list(/obj/item/clothing/mask/balaclava = 1,
+				/obj/item/clothing/mask/breath = 1)
+	category = CAT_CLOTHING
+
+
+
 /datum/crafting_recipe/armwraps
 	name = "Armwraps"
 	result = /obj/item/clothing/gloves/fingerless/pugilist
 	time = 60
 	tools = list(TOOL_WIRECUTTER)
 	reqs = list(/obj/item/stack/sheet/cloth = 4,
-				/obj/item/stack/sheet/durathread = 2,
+				/obj/item/stack/sticky_tape = 2,
 				/obj/item/stack/sheet/leather = 2)
 	category = CAT_CLOTHING
 

code/datums/components/crafting/recipes/recipes_misc.dm

@@ -2,6 +2,15 @@
 //Large Objects//
 /////////////////
 
+/datum/crafting_recipe/plunger
+	name = "Plunger"
+	result = /obj/item/plunger
+	time = 1
+	reqs = list(/obj/item/stack/sheet/plastic = 1,
+				/obj/item/stack/sheet/mineral/wood = 1)
+	category = CAT_MISC
+	subcategory = CAT_TOOL
+
 /datum/crafting_recipe/showercurtain
 	name = "Shower Curtains"
 	reqs = 	list(/obj/item/stack/sheet/cloth = 2,

code/datums/components/embedded.dm

@@ -119,7 +119,7 @@
 		UnregisterSignal(weapon, list(COMSIG_MOVABLE_MOVED, COMSIG_PARENT_QDELETING))
 	if(overlay)
 		var/atom/A = parent
-		A.cut_overlay(overlay, TRUE)
+		UnregisterSignal(A,COMSIG_ATOM_UPDATE_OVERLAYS)
 		qdel(overlay)
 
 	return ..()
@@ -326,7 +326,8 @@
 	var/matrix/M = matrix()
 	M.Translate(pixelX, pixelY)
 	overlay.transform = M
-	hit.add_overlay(overlay, TRUE)
+	RegisterSignal(hit,COMSIG_ATOM_UPDATE_OVERLAYS,.proc/apply_overlay)
+	hit.update_icon()
 
 	if(harmful)
 		hit.visible_message("<span class='danger'>[weapon] embeds itself in [hit]!</span>")
@@ -339,6 +340,8 @@
 	else
 		hit.visible_message("<span class='danger'>[weapon] sticks itself to [hit]!</span>")
 
+/datum/component/embedded/proc/apply_overlay(atom/source, list/overlay_list)
+	overlay_list += overlay
 
 /datum/component/embedded/proc/examineTurf(datum/source, mob/user, list/examine_list)
 	if(harmful)

code/datums/components/plumbing/_plumbing.dm

@@ -0,0 +1,215 @@
+/datum/component/plumbing
+	///Index with "1" = /datum/ductnet/theductpointingnorth etc. "1" being the num2text from NORTH define
+	var/list/datum/ductnet/ducts = list()
+	///shortcut to our parents' reagent holder
+	var/datum/reagents/reagents
+	///TRUE if we wanna add proper pipe outless under our parent object. this is pretty good if i may so so myself
+	var/use_overlays = TRUE
+	///We can't just cut all of the parents' overlays, so we'll track them here
+	var/list/image/ducterlays
+	///directions in wich we act as a supplier
+	var/supply_connects
+	///direction in wich we act as a demander
+	var/demand_connects
+	///FALSE to pretty much just not exist in the plumbing world so we can be moved, TRUE to go plumbo mode
+	var/active = FALSE
+	///if TRUE connects will spin with the parent object visually and codually, so you can have it work in any direction. FALSE if you want it to be static
+	var/turn_connects = TRUE
+
+/datum/component/plumbing/Initialize(start=TRUE, _turn_connects=TRUE) //turn_connects for wheter or not we spin with the object to change our pipes
+	if(parent && !istype(parent, /atom/movable))
+		return COMPONENT_INCOMPATIBLE
+	var/atom/movable/AM = parent
+	if(!AM.reagents)
+		return COMPONENT_INCOMPATIBLE
+	reagents = AM.reagents
+	turn_connects = _turn_connects
+
+	RegisterSignal(parent, list(COMSIG_MOVABLE_MOVED,COMSIG_PARENT_PREQDELETED), .proc/disable)
+	RegisterSignal(parent, list(COMSIG_OBJ_DEFAULT_UNFASTEN_WRENCH), .proc/toggle_active)
+
+	if(start)
+		enable()
+
+	if(use_overlays)
+		create_overlays()
+
+/datum/component/plumbing/process()
+	if(!demand_connects || !reagents)
+		STOP_PROCESSING(SSfluids, src)
+		return
+	if(reagents.total_volume < reagents.maximum_volume)
+		for(var/D in GLOB.cardinals)
+			if(D & demand_connects)
+				send_request(D)
+///Can we be added to the ductnet?
+/datum/component/plumbing/proc/can_add(datum/ductnet/D, dir)
+	if(!active)
+		return
+	if(!dir || !D)
+		return FALSE
+	if(num2text(dir) in ducts)
+		return FALSE
+
+	return TRUE
+///called from in process(). only calls process_request(), but can be overwritten for children with special behaviour
+/datum/component/plumbing/proc/send_request(dir)
+	process_request(amount = MACHINE_REAGENT_TRANSFER, reagent = null, dir = dir)
+///check who can give us what we want, and how many each of them will give us
+/datum/component/plumbing/proc/process_request(amount, reagent, dir)
+	var/list/valid_suppliers = list()
+	var/datum/ductnet/net
+	if(!ducts.Find(num2text(dir)))
+		return
+	net = ducts[num2text(dir)]
+	for(var/A in net.suppliers)
+		var/datum/component/plumbing/supplier = A
+		if(supplier.can_give(amount, reagent, net))
+			valid_suppliers += supplier
+	for(var/A in valid_suppliers)
+		var/datum/component/plumbing/give = A
+		give.transfer_to(src, amount / valid_suppliers.len, reagent, net)
+///returns TRUE when they can give the specified amount and reagent. called by process request
+/datum/component/plumbing/proc/can_give(amount, reagent, datum/ductnet/net)
+	if(amount <= 0)
+		return
+
+	if(reagent) //only asked for one type of reagent
+		for(var/A in reagents.reagent_list)
+			var/datum/reagent/R = A
+			if(R.type == reagent)
+				return TRUE
+	else if(reagents.total_volume > 0) //take whatever
+		return TRUE
+///this is where the reagent is actually transferred and is thus the finish point of our process()
+/datum/component/plumbing/proc/transfer_to(datum/component/plumbing/target, amount, reagent, datum/ductnet/net)
+	if(!reagents || !target || !target.reagents)
+		return FALSE
+	if(reagent)
+		reagents.trans_id_to(target.parent, reagent, amount)
+	else
+		reagents.trans_to(target.parent, amount)
+///We create our luxurious piping overlays/underlays, to indicate where we do what. only called once if use_overlays = TRUE in Initialize()
+/datum/component/plumbing/proc/create_overlays()
+	var/atom/movable/AM = parent
+	for(var/image/I in ducterlays)
+		AM.overlays.Remove(I)
+		qdel(I)
+	ducterlays = list()
+	for(var/D in GLOB.cardinals)
+		var/color
+		var/direction
+		if(D & demand_connects)
+			color = "red" //red because red is mean and it takes
+		else if(D & supply_connects)
+			color = "blue" //blue is nice and gives
+		else
+			continue
+		var/image/I
+		if(turn_connects)
+			switch(D)
+				if(NORTH)
+					direction = "north"
+				if(SOUTH)
+					direction = "south"
+				if(EAST)
+					direction = "east"
+				if(WEST)
+					direction = "west"
+			I = image('icons/obj/plumbing/plumbers.dmi', "[direction]-[color]", layer = AM.layer - 1)
+		else
+			I = image('icons/obj/plumbing/plumbers.dmi', color, layer = AM.layer - 1) //color is not color as in the var, it's just the name
+			I.dir = D
+		AM.add_overlay(I)
+		ducterlays += I
+///we stop acting like a plumbing thing and disconnect if we are, so we can safely be moved and stuff
+/datum/component/plumbing/proc/disable()
+	if(!active)
+		return
+	STOP_PROCESSING(SSfluids, src)
+	for(var/A in ducts)
+		var/datum/ductnet/D = ducts[A]
+		D.remove_plumber(src)
+	active = FALSE
+	for(var/D in GLOB.cardinals)
+		if(D & (demand_connects | supply_connects))
+			for(var/obj/machinery/duct/duct in get_step(parent, D))
+				duct.attempt_connect()
+
+///settle wherever we are, and start behaving like a piece of plumbing
+/datum/component/plumbing/proc/enable()
+	if(active)
+		return
+	update_dir()
+	active = TRUE
+	var/atom/movable/AM = parent
+	for(var/obj/machinery/duct/D in AM.loc)	//Destroy any ducts under us. Ducts also self destruct if placed under a plumbing machine. machines disable when they get moved
+		if(D.anchored)								//that should cover everything
+			D.disconnect_duct()
+
+	if(demand_connects)
+		START_PROCESSING(SSfluids, src)
+
+	for(var/D in GLOB.cardinals)
+		if(D & (demand_connects | supply_connects))
+			for(var/atom/movable/A in get_step(parent, D))
+				if(istype(A, /obj/machinery/duct))
+					var/obj/machinery/duct/duct = A
+					duct.attempt_connect()
+				else
+					var/datum/component/plumbing/P = A.GetComponent(/datum/component/plumbing)
+					if(P)
+						direct_connect(P, D)
+
+/// Toggle our machinery on or off. This is called by a hook from default_unfasten_wrench with anchored as only param, so we dont have to copypaste this on every object that can move
+/datum/component/plumbing/proc/toggle_active(obj/O, new_state)
+	if(new_state)
+		enable()
+	else
+		disable()
+/** We update our connects only when we settle down by taking our current and original direction to find our new connects
+* If someone wants it to fucking spin while connected to something go actually knock yourself out
+*/
+/datum/component/plumbing/proc/update_dir()
+	if(!turn_connects)
+		return
+	var/atom/movable/AM = parent
+	var/new_demand_connects
+	var/new_supply_connects
+	var/new_dir = AM.dir
+	var/angle = 180 - dir2angle(new_dir)
+	if(new_dir == SOUTH)
+		demand_connects = initial(demand_connects)
+		supply_connects = initial(supply_connects)
+	else
+		for(var/D in GLOB.cardinals)
+			if(D & initial(demand_connects))
+				new_demand_connects += turn(D, angle)
+			if(D & initial(supply_connects))
+				new_supply_connects += turn(D, angle)
+		demand_connects = new_demand_connects
+		supply_connects = new_supply_connects
+///Give the direction of a pipe, and it'll return wich direction it originally was when it's object pointed SOUTH
+/datum/component/plumbing/proc/get_original_direction(dir)
+	var/atom/movable/AM = parent
+	return turn(dir, dir2angle(AM.dir) - 180)
+//special case in-case we want to connect directly with another machine without a duct
+/datum/component/plumbing/proc/direct_connect(datum/component/plumbing/P, dir)
+	if(!P.active)
+		return
+	var/opposite_dir = turn(dir, 180)
+	if(P.demand_connects & opposite_dir && supply_connects & dir || P.supply_connects & opposite_dir && demand_connects & dir) //make sure we arent connecting two supplies or demands
+		var/datum/ductnet/net = new()
+		net.add_plumber(src, dir)
+		net.add_plumber(P, opposite_dir)
+
+///has one pipe input that only takes, example is manual output pipe
+/datum/component/plumbing/simple_demand
+	demand_connects = NORTH
+///has one pipe output that only supplies. example is liquid pump and manual input pipe
+/datum/component/plumbing/simple_supply
+	supply_connects = NORTH
+///input and output, like a holding tank
+/datum/component/plumbing/tank
+	demand_connects = WEST
+	supply_connects = EAST

code/datums/components/plumbing/chemical_acclimator.dm

@@ -0,0 +1,21 @@
+/datum/component/plumbing/acclimator
+	demand_connects = WEST
+	supply_connects = EAST
+	var/obj/machinery/plumbing/acclimator/AC
+
+/datum/component/plumbing/acclimator/Initialize(start=TRUE, _turn_connects=TRUE)
+	. = ..()
+	if(!istype(parent, /obj/machinery/plumbing/acclimator))
+		return COMPONENT_INCOMPATIBLE
+	AC = parent
+
+/datum/component/plumbing/acclimator/can_give(amount, reagent)
+	. = ..()
+	if(. && AC.emptying)
+		return TRUE
+	return FALSE
+///We're overriding process and not send_request, because all process does is do the requests, so we might aswell cut out the middle man and save some code from running
+/datum/component/plumbing/acclimator/process()
+	if(AC.emptying)
+		return
+	. = ..()

code/datums/components/plumbing/filter.dm

@@ -0,0 +1,59 @@
+///The magical plumbing component used by the chemical filters. The different supply connects behave differently depending on the filters set on the chemical filter
+/datum/component/plumbing/filter
+	demand_connects = NORTH
+	supply_connects = SOUTH | EAST | WEST //SOUTH is straight, EAST is left and WEST is right. We look from the perspective of the insert
+
+/datum/component/plumbing/filter/Initialize()
+	. = ..()
+	if(!istype(parent, /obj/machinery/plumbing/filter))
+		return COMPONENT_INCOMPATIBLE
+
+/datum/component/plumbing/filter/can_give(amount, reagent, datum/ductnet/net)
+	. = ..()
+	if(.)
+		var/direction
+		for(var/A in ducts)
+			if(ducts[A] == net)
+				direction = get_original_direction(text2num(A)) //we need it relative to the direction, so filters don't change when we turn the filter
+				break
+		if(!direction)
+			return FALSE
+		if(reagent)
+			if(!can_give_in_direction(direction, reagent))
+				return FALSE
+
+/datum/component/plumbing/filter/transfer_to(datum/component/plumbing/target, amount, reagent, datum/ductnet/net)
+	if(!reagents || !target || !target.reagents)
+		return FALSE
+	var/direction
+	for(var/A in ducts)
+		if(ducts[A] == net)
+			direction = get_original_direction(text2num(A))
+			break
+	if(reagent)
+		reagents.trans_id_to(target.parent, reagent, amount)
+	else
+		for(var/A in reagents.reagent_list)
+			var/datum/reagent/R = A
+			if(!can_give_in_direction(direction, R.type))
+				continue
+			var/new_amount
+			if(R.volume < amount)
+				new_amount = amount - R.volume
+			reagents.trans_id_to(target.parent, R.type, amount)
+			amount = new_amount
+			if(amount <= 0)
+				break
+///We check if the direction and reagent are valid to give. Needed for filters since different outputs have different behaviours
+/datum/component/plumbing/filter/proc/can_give_in_direction(dir, reagent)
+	var/obj/machinery/plumbing/filter/F = parent
+	switch(dir)
+		if(SOUTH) //straight
+			if(!F.left.Find(reagent) && !F.right.Find(reagent))
+				return TRUE
+		if(WEST) //right
+			if(F.right.Find(reagent))
+				return TRUE
+		if(EAST) //left
+			if(F.left.Find(reagent))
+				return TRUE

code/datums/components/plumbing/reaction_chamber.dm

@@ -0,0 +1,38 @@
+/datum/component/plumbing/reaction_chamber
+	demand_connects = WEST
+	supply_connects = EAST
+
+/datum/component/plumbing/reaction_chamber/Initialize(start=TRUE, _turn_connects=TRUE)
+	. = ..()
+	if(!istype(parent, /obj/machinery/plumbing/reaction_chamber))
+		return COMPONENT_INCOMPATIBLE
+
+/datum/component/plumbing/reaction_chamber/can_give(amount, reagent, datum/ductnet/net)
+	. = ..()
+	var/obj/machinery/plumbing/reaction_chamber/RC = parent
+	if(!. || !RC.emptying)
+		return FALSE
+
+/datum/component/plumbing/reaction_chamber/send_request(dir)
+	var/obj/machinery/plumbing/reaction_chamber/RC = parent
+	if(RC.emptying || !LAZYLEN(RC.required_reagents))
+		return
+	for(var/RT in RC.required_reagents)
+		var/has_reagent = FALSE
+		for(var/A in reagents.reagent_list)
+			var/datum/reagent/RD = A
+			if(RT == RD.type)
+				has_reagent = TRUE
+				if(RD.volume < RC.required_reagents[RT])
+					process_request(min(RC.required_reagents[RT] - RD.volume, MACHINE_REAGENT_TRANSFER) , RT, dir)
+					return
+		if(!has_reagent)
+			process_request(min(RC.required_reagents[RT], MACHINE_REAGENT_TRANSFER), RT, dir)
+			return
+
+	RC.reagent_flags &= ~NO_REACT
+	reagents.handle_reactions()
+
+	RC.emptying = TRUE //If we move this up, it'll instantly get turned off since any reaction always sets the reagent_total to zero. Other option is make the reaction update
+	//everything for every chemical removed, wich isn't a good option either.
+	RC.on_reagent_change() //We need to check it now, because some reactions leave nothing left.

code/datums/components/plumbing/splitter.dm

@@ -0,0 +1,45 @@
+/datum/component/plumbing/splitter
+	demand_connects = NORTH
+	supply_connects = SOUTH | EAST
+
+/datum/component/plumbing/splitter/Initialize()
+	. = ..()
+	if(. && !istype(parent, /obj/machinery/plumbing/splitter))
+		return FALSE
+
+/datum/component/plumbing/splitter/can_give(amount, reagent, datum/ductnet/net)
+	. = ..()
+	if(!.)
+		return
+	. = FALSE
+	var/direction
+	for(var/A in ducts)
+		if(ducts[A] == net)
+			direction = get_original_direction(text2num(A))
+			break
+	var/obj/machinery/plumbing/splitter/S = parent
+	switch(direction)
+		if(SOUTH)
+			if(S.turn_straight && S.transfer_straight <= amount)
+				S.turn_straight = FALSE
+				return TRUE
+		if(EAST)
+			if(!S.turn_straight && S.transfer_side <= amount)
+				S.turn_straight = TRUE
+				return TRUE
+
+/datum/component/plumbing/splitter/transfer_to(datum/component/plumbing/target, amount, reagent, datum/ductnet/net)
+	var/direction
+	for(var/A in ducts)
+		if(ducts[A] == net)
+			direction = get_original_direction(text2num(A))
+			break
+	var/obj/machinery/plumbing/splitter/S = parent
+	switch(direction)
+		if(SOUTH)
+			if(amount >= S.transfer_straight)
+				amount = S.transfer_straight
+		if(EAST)
+			if(amount >= S.transfer_side)
+				amount = S.transfer_side
+	. = ..()

code/datums/components/shielded.dm

@@ -14,6 +14,7 @@
 	var/mob/living/holder //who is currently benefiting from the shield.
 	var/dissipating = FALSE //Is this shield meant to dissipate over time instead of recharging.
 	var/del_on_overload = FALSE //will delete itself once it has no charges left.
+	var/cached_vis_overlay //text identifier of the visual overlay.
 
 /datum/component/shielded/Initialize(current, max = 3, delay = 20 SECONDS, rate = 1, slots, state = "shield-old", broken, \
 									sound = 'sound/magic/charge.ogg', end_sound = 'sound/machines/ding.ogg', diss = FALSE, del_overload = FALSE)
@@ -47,9 +48,8 @@
 		holder = L
 		var/to_add = charges >= 1 ? shield_state : broken_state
 		if(to_add)
-			var/mutable_appearance/M = mutable_appearance('icons/effects/effects.dmi', to_add)
-			M.layer = (L.layer > MOB_LAYER ? L.layer : MOB_LAYER) + 0.01
-			holder.add_overlay(M, TRUE)
+			var/layer = (L.layer > MOB_LAYER ? L.layer : MOB_LAYER) + 0.01
+			SSvis_overlays.add_vis_overlay(L, 'icons/effects/effects.dmi', to_add, layer, GAME_PLANE, L.dir)
 
 /datum/component/shielded/UnregisterFromParent()
 	. = ..()
@@ -57,9 +57,9 @@
 		UnregisterSignal(parent, list(COMSIG_ITEM_RUN_BLOCK,COMSIG_ITEM_CHECK_BLOCK,COMSIG_ITEM_EQUIPPED,COMSIG_ITEM_DROPPED))
 	if(holder)
 		UnregisterSignal(holder, list(COMSIG_LIVING_RUN_BLOCK, COMSIG_LIVING_GET_BLOCKING_ITEMS))
-		var/to_remove = charges >= 1 ? shield_state : broken_state
-		if(to_remove)
-			holder.cut_overlay(mutable_appearance('icons/effects/effects.dmi', to_remove), TRUE)
+		if(cached_vis_overlay)
+			SSvis_overlays.remove_vis_overlay(holder, cached_vis_overlay)
+			cached_vis_overlay = null
 		holder = null
 
 /datum/component/shielded/process()
@@ -80,7 +80,7 @@
 			holder.visible_message("[holder]'s shield overloads!")
 		qdel(src)
 		return
-	if(holder && (old_charges < 1 && charges >= 1) || (!del_on_overload && old_charges >= 1 && charges < 1))
+	if(holder && ((old_charges < 1 && charges >= 1) || (!del_on_overload && old_charges >= 1 && charges < 1)))
 		update_shield_overlay(charges < 1)
 
 /datum/component/shielded/proc/adjust_charges(amount)
@@ -93,20 +93,19 @@
 			holder.visible_message("[holder]'s shield overloads!")
 		qdel(src)
 		return
-	if(holder && (old_charges < 1 && charges >= 1) || (!del_on_overload && old_charges >= 1 && charges < 1))
+	if(holder && ((old_charges < 1 && charges >= 1) || (!del_on_overload && old_charges >= 1 && charges < 1)))
 		update_shield_overlay(charges < 1)
 
 /datum/component/shielded/proc/update_shield_overlay(broken)
 	if(!holder)
 		return
-	var/to_remove = broken ? shield_state : broken_state
 	var/to_add = broken ? broken_state : shield_state
-	if(to_remove)
-		holder.cut_overlay(mutable_appearance('icons/effects/effects.dmi', to_remove), TRUE)
+	if(cached_vis_overlay)
+		SSvis_overlays.remove_vis_overlay(holder, cached_vis_overlay)
+		cached_vis_overlay = null
 	if(to_add)
-		var/mutable_appearance/M = mutable_appearance('icons/effects/effects.dmi', to_add)
-		M.layer = (holder.layer > MOB_LAYER ? holder.layer : MOB_LAYER) + 0.01
-		holder.add_overlay(M, TRUE)
+		var/layer = (holder.layer > MOB_LAYER ? holder.layer : MOB_LAYER) + 0.01
+		SSvis_overlays.add_vis_overlay(holder, 'icons/effects/effects.dmi', to_add, layer, GAME_PLANE, holder.dir)
 
 /datum/component/shielded/proc/on_equip(obj/item/source, mob/living/equipper, slot)
 	if(!(accepted_slots & slotdefine2slotbit(slot)))
@@ -117,17 +116,16 @@
 	RegisterSignal(equipper, COMSIG_LIVING_GET_BLOCKING_ITEMS, .proc/include_shield)
 	var/to_add = charges >= 1 ? shield_state : broken_state
 	if(to_add)
-		var/mutable_appearance/M = mutable_appearance('icons/effects/effects.dmi', to_add)
-		M.layer = (holder.layer > MOB_LAYER ? holder.layer : MOB_LAYER) + 0.01
-		equipper.add_overlay(M, TRUE)
+		var/layer = (holder.layer > MOB_LAYER ? holder.layer : MOB_LAYER) + 0.01
+		cached_vis_overlay = SSvis_overlays.add_vis_overlay(holder, 'icons/effects/effects.dmi', to_add, layer, GAME_PLANE, holder.dir)
 
 /datum/component/shielded/proc/on_drop(obj/item/source, mob/dropper)
 	if(holder == dropper)
 		UnregisterSignal(holder, COMSIG_LIVING_GET_BLOCKING_ITEMS)
 		UnregisterSignal(parent, list(COMSIG_ITEM_RUN_BLOCK, COMSIG_ITEM_CHECK_BLOCK))
-		var/to_remove = charges >= 1 ? shield_state : broken_state
-		if(to_remove)
-			holder.cut_overlay(mutable_appearance('icons/effects/effects.dmi', to_remove), TRUE)
+		if(cached_vis_overlay)
+			SSvis_overlays.remove_vis_overlay(holder, cached_vis_overlay)
+			cached_vis_overlay = null
 		holder = null
 
 /datum/component/shielded/proc/include_shield(mob/source, list/items)