U_I Phase 2.0: Code cleanup

Removing calls to update_icons_layers and the like, stubbing them to help track down future calls.

code/__defines/items_clothing.dm

@@ -80,29 +80,33 @@
 #define BLOCKHEADHAIR   0x20    // Hides the user's hair overlay. Leaves facial hair.
 #define BLOCKHAIR       0x40    // Hides the user's hair, facial and otherwise.
 
-// Slots.
+// Slots as numbers //
-#define slot_back        1
+//Hands
-#define slot_wear_mask   2
+#define slot_l_hand      1
-#define slot_handcuffed  3
+#define slot_r_hand      2 //Some things may reference this, try to keep it here
-#define slot_l_hand      4
+//Shown unless F12 pressed
-#define slot_r_hand      5
+#define slot_back        3
-#define slot_belt        6
+#define slot_belt        4
-#define slot_wear_id     7
+#define slot_wear_id     5
-#define slot_l_ear       8
+#define slot_l_store     6
-#define slot_glasses     9
+#define slot_r_store     7 //Some things may reference this, try to keep it here
+//Shown when inventory unhidden
+#define slot_glasses     8
+#define slot_wear_mask   9
 #define slot_gloves      10
 #define slot_head        11
 #define slot_shoes       12
 #define slot_wear_suit   13
 #define slot_w_uniform   14
-#define slot_l_store     15
+#define slot_s_store     15
-#define slot_r_store     16
+#define slot_l_ear       16
-#define slot_s_store     17
+#define slot_r_ear       17
-#define slot_in_backpack 18
+//Secret slots
-#define slot_legcuffed   19
+#define slot_legs        18
-#define slot_r_ear       20
+#define slot_tie         19
-#define slot_legs        21
+#define slot_handcuffed  20
-#define slot_tie         22
+#define slot_legcuffed   21
+#define slot_in_backpack 22
 
 // Inventory slot strings.
 // since numbers cannot be used as associative list keys.

code/__defines/mobs.dm

@@ -267,5 +267,3 @@
 
 //Some mob icon layering defines
 #define BODY_LAYER		-100
-#define BACKPLANE_LAYER	-101
-#define HUD_LAYER		-105

code/_helpers/icons.dm

@@ -922,8 +922,8 @@ proc/sort_atoms_by_layer(var/list/atoms)
 /proc/gen_hud_image(var/file, var/person, var/state, var/plane)
 	var/image/img = image(file, person, state)
 	img.plane = plane //Thanks Byond.
-	img.layer = HUD_LAYER
+	img.layer = MOB_LAYER-0.02
-	img.appearance_flags = APPEARANCE_UI|KEEP_APART
+	img.appearance_flags = APPEARANCE_UI
 	return img
 
 /**

code/_onclick/hud/hud.dm

@@ -164,6 +164,7 @@ var/list/global_huds = list(
 
 	var/obj/screen/movable/action_button/hide_toggle/hide_actions_toggle
 	var/action_buttons_hidden = 0
+	var/list/slot_info
 
 datum/hud/New(mob/owner)
 	mymob = owner

code/_onclick/hud/human.dm

@@ -14,6 +14,7 @@
 	src.adding = list()
 	src.other = list()
 	src.hotkeybuttons = list() //These can be disabled for hotkey users
+	src.slot_info = list()
 
 	var/list/hud_elements = list()
 	var/obj/screen/using
@@ -33,6 +34,7 @@
 		inv_box.screen_loc =  slot_data["loc"]
 		inv_box.slot_id =     slot_data["slot"]
 		inv_box.icon_state =  slot_data["state"]
+		slot_info["[inv_box.slot_id]"] = inv_box.screen_loc
 
 		if(slot_data["dir"])
 			inv_box.set_dir(slot_data["dir"])
@@ -164,9 +166,9 @@
 		inv_box.slot_id = slot_r_hand
 		inv_box.color = ui_color
 		inv_box.alpha = ui_alpha
-
 		src.r_hand_hud_object = inv_box
 		src.adding += inv_box
+		slot_info["[slot_r_hand]"] = inv_box.screen_loc
 
 		inv_box = new /obj/screen/inventory/hand()
 		inv_box.hud = src
@@ -181,6 +183,7 @@
 		inv_box.alpha = ui_alpha
 		src.l_hand_hud_object = inv_box
 		src.adding += inv_box
+		slot_info["[slot_l_hand]"] = inv_box.screen_loc
 
 		using = new /obj/screen/inventory()
 		using.name = "hand"

code/game/antagonist/outsider/mercenary.dm

@@ -50,8 +50,6 @@ var/datum/antagonist/mercenary/mercs
 	var/obj/item/device/radio/uplink/U = new(player.loc, player.mind, DEFAULT_TELECRYSTAL_AMOUNT)
 	player.put_in_hands(U)
 
-	player.update_icons_layers()
-
 	create_id("Mercenary", player)
 	create_radio(SYND_FREQ, player)
 	return 1

code/game/antagonist/outsider/technomancer.dm

@@ -47,7 +47,6 @@ var/datum/antagonist/technomancer/technomancers
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/device/flashlight(technomancer_mob), slot_belt)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/shoes/laceup(technomancer_mob), slot_shoes)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/head/technomancer/master(technomancer_mob), slot_head)
-	technomancer_mob.update_icons_layers()
 	return 1
 
 /datum/antagonist/technomancer/proc/equip_apprentice(var/mob/living/carbon/human/technomancer_mob)
@@ -67,7 +66,6 @@ var/datum/antagonist/technomancer/technomancers
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/device/flashlight(technomancer_mob), slot_belt)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/shoes/laceup(technomancer_mob), slot_shoes)
 	technomancer_mob.equip_to_slot_or_del(new /obj/item/clothing/head/technomancer/apprentice(technomancer_mob), slot_head)
-	technomancer_mob.update_icons()
 	return 1
 
 /datum/antagonist/technomancer/check_victory()

code/game/antagonist/outsider/wizard.dm

@@ -87,7 +87,6 @@ var/datum/antagonist/wizard/wizards
 	wizard_mob.equip_to_slot_or_del(new /obj/item/weapon/storage/box(wizard_mob), slot_in_backpack)
 	wizard_mob.equip_to_slot_or_del(new /obj/item/weapon/teleportation_scroll(wizard_mob), slot_r_store)
 	wizard_mob.equip_to_slot_or_del(new /obj/item/weapon/spellbook(wizard_mob), slot_r_hand)
-	wizard_mob.update_icons_layers()
 	return 1
 
 /datum/antagonist/wizard/check_victory()

code/game/gamemodes/changeling/generic_equip_procs.dm

@@ -122,7 +122,6 @@
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
 			visible_message("<span class='warning'>[src] pulls on their clothes, peeling it off along with parts of their skin attached!</span>",
 			"<span class='notice'>We remove and deform our equipment.</span>")
-		M.update_icons_layers()
 		M.mind.changeling.armor_deployed = 0
 		return success
 
@@ -138,7 +137,6 @@
 			M.equip_to_slot_or_del(I, slot_head)
 			grown_items_list.Add("a helmet")
 			playsound(src, 'sound/effects/blobattack.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -148,7 +146,6 @@
 			M.equip_to_slot_or_del(I, slot_w_uniform)
 			grown_items_list.Add("a uniform")
 			playsound(src, 'sound/effects/blobattack.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -158,7 +155,6 @@
 			M.equip_to_slot_or_del(I, slot_gloves)
 			grown_items_list.Add("some gloves")
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -168,7 +164,6 @@
 			M.equip_to_slot_or_del(I, slot_shoes)
 			grown_items_list.Add("shoes")
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -178,7 +173,6 @@
 			M.equip_to_slot_or_del(I, slot_belt)
 			grown_items_list.Add("a belt")
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -188,7 +182,6 @@
 			M.equip_to_slot_or_del(I, slot_glasses)
 			grown_items_list.Add("some glasses")
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -198,7 +191,6 @@
 			M.equip_to_slot_or_del(I, slot_wear_mask)
 			grown_items_list.Add("a mask")
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -208,7 +200,6 @@
 			M.equip_to_slot_or_del(I, slot_back)
 			grown_items_list.Add("a backpack")
 			playsound(src, 'sound/effects/blobattack.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -218,7 +209,6 @@
 			M.equip_to_slot_or_del(I, slot_wear_suit)
 			grown_items_list.Add("an exosuit")
 			playsound(src, 'sound/effects/blobattack.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
@@ -228,20 +218,13 @@
 			M.equip_to_slot_or_del(I, slot_wear_id)
 			grown_items_list.Add("an ID card")
 			playsound(src, 'sound/effects/splat.ogg', 30, 1)
-			M.update_icons_layers()
 			success = 1
 			sleep(1 SECOND)
 
 		var/feedback = english_list(grown_items_list, nothing_text = "nothing", and_text = " and ", comma_text = ", ", final_comma_text = "" )
 
 		M << "<span class='notice'>We have grown [feedback].</span>"
-	/*
+	
-		for(var/I in stuff_to_equip)
-			world << I
-		world << stuff_to_equip
-		world << "Proc ended."
-	*/
-		M.update_icons()
 		if(success)
 			M.mind.changeling.armor_deployed = 1
 			M.mind.changeling.chem_charges -= 10

code/game/gamemodes/changeling/powers/fabricate_clothing.dm

@@ -56,7 +56,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/clothing/head/chameleon/changeling
 	name = "malformed head"
@@ -78,7 +77,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/clothing/suit/chameleon/changeling
 	name = "chitinous chest"
@@ -104,7 +102,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/clothing/shoes/chameleon/changeling
 	name = "malformed feet"
@@ -130,7 +127,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/weapon/storage/backpack/chameleon/changeling
 	name = "backpack"
@@ -158,7 +154,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		for(var/atom/movable/AM in src.contents) //Dump whatever's in the bag before deleting.
 			AM.forceMove(get_turf(loc))
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/clothing/gloves/chameleon/changeling
 	name = "malformed hands"
@@ -185,8 +180,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
-
 
 /obj/item/clothing/mask/chameleon/changeling
 	name = "chitin visor"
@@ -213,7 +206,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/clothing/glasses/chameleon/changeling
 	name = "chitin goggles"
@@ -235,7 +227,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/weapon/storage/belt/chameleon/changeling
 	name = "waist pouch"
@@ -261,7 +252,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
 
 /obj/item/weapon/card/id/syndicate/changeling
 	name = "chitinous card"
@@ -291,8 +281,6 @@ var/global/list/changeling_fabricated_clothing = list(
 		visible_message("<span class='warning'>[H] tears off [src]!</span>",
 		"<span class='notice'>We remove [src].</span>")
 		qdel(src)
-		H.update_icons_layers()
-
 
 /obj/item/weapon/card/id/syndicate/changeling/Click() //Since we can't hold it in our hands, and attack_hand() doesn't work if it in inventory...
 	if(!registered_user)

code/game/machinery/computer3/computers/HolodeckControl.dm

@@ -155,7 +155,6 @@
 			var/mob/M = obj.loc
 			if(ismob(M))
 				M.remove_from_mob(obj)
-				M.update_icons_layers()	//so their overlays update
 
 		if(!silent)
 			var/obj/oldobj = obj

code/game/objects/items.dm

@@ -283,6 +283,7 @@
 // note this isn't called during the initial dressing of a player
 /obj/item/proc/equipped(var/mob/user, var/slot)
 	hud_layerise()
+	user.position_hud_item(src,slot)
 	if(user.client)	user.client.screen |= src
 	if(user.pulling == src) user.stop_pulling()
 	return
@@ -698,7 +699,7 @@ modules/mob/living/carbon/human/life.dm if you die, you will be zoomed out.
 			if(slot_l_hand_str)
 				state2use += "_l"
 
-	testing("[src] (\ref[src]) - Worn Icon:[icon2use], Worn State:[state2use], Worn Layer:[layer2use]")
+	// testing("[src] (\ref[src]) - Slot: [slot_name], Inhands: [inhands], Worn Icon:[icon2use], Worn State:[state2use], Worn Layer:[layer2use]")
 
 	//Generate the base onmob icon
 	var/icon/standing_icon = icon(icon = icon2use, icon_state = state2use)

code/game/objects/items/devices/defib.dm

@@ -487,7 +487,6 @@
 
 	M.timeofdeath = 0
 	M.stat = UNCONSCIOUS //Life() can bring them back to consciousness if it needs to.
-	M.regenerate_icons()
 	M.failed_last_breath = 0 //So mobs that died of oxyloss don't revive and have perpetual out of breath.
 	M.reload_fullscreen()
 

code/game/objects/items/weapons/handcuffs.dm

@@ -103,6 +103,13 @@
 	target.update_inv_handcuffed()
 	return 1
 
+/obj/item/weapon/handcuffs/equipped(var/mob/living/user,var/slot)
+	. = ..()
+	if(slot == slot_handcuffed)
+		user.drop_r_hand()
+		user.drop_l_hand()
+		user.stop_pulling()
+
 var/last_chew = 0
 /mob/living/carbon/human/RestrainedClickOn(var/atom/A)
 	if (A != src) return ..()
@@ -315,3 +322,11 @@ var/last_chew = 0
 	target.legcuffed = lcuffs
 	target.update_inv_legcuffed()
 	return 1
+
+/obj/item/weapon/handcuffs/legcuffs/equipped(var/mob/living/user,var/slot)
+	. = ..()
+	if(slot == slot_legcuffed)
+		if(user.m_intent != "walk")
+			user.m_intent = "walk"
+			if(user.hud_used && user.hud_used.move_intent)
+				user.hud_used.move_intent.icon_state = "walking"

code/modules/admin/topic.dm

@@ -1001,11 +1001,6 @@
 		//strip their stuff and stick it in the crate
 		for(var/obj/item/I in M)
 			M.drop_from_inventory(I, locker)
-		if(ishuman(M))
-			var/mob/living/carbon/human/H = M
-			H.update_icons_layers() //Cheaper
-		else
-			M.update_icons()
 
 		//so they black out before warping
 		M.Paralyse(5)
@@ -1188,10 +1183,8 @@
 			usr << "This can only be used on instances of type /mob/living/carbon/human"
 			return
 		var/block=text2num(href_list["block"])
-		//testing("togmutate([href_list["block"]] -> [block])")
 		usr.client.cmd_admin_toggle_block(H,block)
 		show_player_panel(H)
-		//H.regenerate_icons()
 
 	else if(href_list["adminplayeropts"])
 		var/mob/M = locate(href_list["adminplayeropts"])

code/modules/admin/verbs/possess.dm

@@ -37,7 +37,6 @@
 		if(ishuman(usr))
 			var/mob/living/carbon/human/H = usr
 			H.name = H.get_visible_name()
-//		usr.regenerate_icons() //So the name is updated properly
 
 	usr.loc = O.loc // Appear where the object you were controlling is -- TLE
 	usr.client.eye = usr

code/modules/client/preferences.dm

@@ -287,10 +287,10 @@ datum/preferences
 
 	if(icon_updates)
 		character.force_update_limbs()
-		character.update_mutations(0)
+		character.update_icons_body()
-		character.update_underwear(0)
+		character.update_mutations()
-		character.update_hair(0)
+		character.update_underwear()
-		character.update_icons_all()
+		character.update_hair()
 
 /datum/preferences/proc/open_load_dialog(mob/user)
 	var/dat = "<body>"

code/modules/clothing/suits/miscellaneous.dm

@@ -265,6 +265,15 @@
 			return
 	..()
 
+/obj/item/clothing/suit/straight_jacket/equipped(var/mob/living/user,var/slot)
+	. = ..()
+	if(slot == slot_wear_suit)
+		user.drop_l_hand()
+		user.drop_r_hand()
+		if(ishuman(user))
+			var/mob/living/carbon/human/H = user
+			H.drop_from_inventory(H.handcuffed)
+
 /obj/item/clothing/suit/ianshirt
 	name = "worn shirt"
 	desc = "A worn out, curiously comfortable t-shirt with a picture of Ian. You wouldn't go so far as to say it feels like being hugged when you wear it but it's pretty close. Good for sleeping in."

code/modules/holodeck/HolodeckControl.dm

@@ -247,7 +247,6 @@
 		var/mob/M = obj.loc
 		if(ismob(M))
 			M.remove_from_mob(obj)
-			M.update_icons_layers()	//so their overlays update
 
 	if(!silent)
 		var/obj/oldobj = obj

code/modules/mob/dead/observer/observer.dm

@@ -103,7 +103,6 @@
 		if (ishuman(body))
 			var/mob/living/carbon/human/H = body
 			icon = H.icon
-			LAZYCLEARLIST(H.list_huds)
 			H.update_icons()
 			overlays = H.overlays
 		else

code/modules/mob/holder.dm

@@ -83,8 +83,6 @@ var/list/holder_mob_icon_cache = list()
 			H.update_inv_l_hand()
 		else if(H.r_hand == src)
 			H.update_inv_r_hand()
-		//else
-			//H.regenerate_icons() //Basically just too expensive. Probably also not necessary.
 
 //Mob specific holders.
 /obj/item/weapon/holder/diona

code/modules/mob/inventory.dm

@@ -138,7 +138,6 @@ var/list/slot_equipment_priority = list( \
 		remove_from_mob(W, target)
 		if(!(W && W.loc))
 			return 1 // self destroying objects (tk, grabs)
-		update_icons_layers()
 		return 1
 	return 0
 

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

@@ -290,10 +290,8 @@
 				H.bloody_hands = 0
 				H.update_inv_gloves(0)
 			H.germ_level = 0
-	update_icons_layers(FALSE)	//apply the now updated overlays to the mob
 	update_icons_body()
 
-
 /mob/living/carbon/fire_act(datum/gas_mixture/air, exposed_temperature, exposed_volume)
 	..()
 	var/temp_inc = max(min(BODYTEMP_HEATING_MAX*(1-get_heat_protection()), exposed_temperature - bodytemperature), 0)

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

@@ -5,7 +5,8 @@
 	icon = 'icons/effects/effects.dmi'	//We have an ultra-complex update icons that overlays everything, don't load some stupid random male human
 	icon_state = "nothing"
 
-	var/list/hud_list[TOTAL_HUDS]
+	has_huds = TRUE 					//We do have HUDs (like health, wanted, status, not inventory slots)
+
 	var/embedded_flag					//To check if we've need to roll for damage on movement while an item is imbedded in us.
 	var/obj/item/weapon/rig/wearing_rig // This is very not good, but it's much much better than calling get_rig() every update_canmove() call.
 	var/last_push_time					//For human_attackhand.dm, keeps track of the last use of disarm
@@ -40,9 +41,8 @@
 
 	nutrition = rand(200,400)
 
-	make_hud_overlays()
-
 	human_mob_list |= src
+	
 	..()
 
 	hide_underwear.Cut()
@@ -59,13 +59,6 @@
 	for(var/organ in organs)
 		qdel(organ)
 
-	LAZYCLEARLIST(list_layers)
-	list_layers = null //Be free!
-	LAZYCLEARLIST(list_body)
-	list_body = null
-	LAZYCLEARLIST(list_huds)
-	list_huds = null
-
 	return ..()
 
 /mob/living/carbon/human/Stat()

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

@@ -102,8 +102,6 @@
 
 	can_be_antagged = TRUE
 
-	var/has_huds = TRUE //Do they have all the fancy life huds? Not for mannequins.
-
 // Used by mobs in virtual reality to point back to the "real" mob the client belongs to.
 	var/mob/living/carbon/human/vr_holder = null
 	// Used by "real" mobs after they leave a VR session

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

@@ -108,7 +108,7 @@
 
 	return FBP_NONE
 
-/mob/living/carbon/human/proc/make_hud_overlays()
+/mob/living/carbon/human/make_hud_overlays()
 	hud_list[HEALTH_HUD]      = gen_hud_image(ingame_hud_med, src, "100", plane = PLANE_CH_HEALTH)
 	if(isSynthetic())
 		hud_list[STATUS_HUD]  = gen_hud_image(ingame_hud, src, "hudrobo", plane = PLANE_CH_STATUS)

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

@@ -2,7 +2,8 @@
 	var/obj/item/organ/internal/eyes/eyes = internal_organs_by_name[O_EYES]
 	if(eyes)
 		eyes.update_colour()
-		regenerate_icons()
+		update_icons_body() //Body handles eyes
+		update_eyes() //For floating eyes only
 
 /mob/living/carbon/var/list/internal_organs = list()
 /mob/living/carbon/human/var/list/organs = list()

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

@@ -152,12 +152,14 @@ This saves us from having to call add_fingerprint() any time something is put in
 	else if (W == wear_id)
 		wear_id = null
 		update_inv_wear_id()
+		BITSET(hud_updateflag, ID_HUD)
+		BITSET(hud_updateflag, WANTED_HUD)
 	else if (W == r_store)
 		r_store = null
-		update_inv_pockets()
+		//update_inv_pockets() //Doesn't do anything.
 	else if (W == l_store)
 		l_store = null
-		update_inv_pockets()
+		//update_inv_pockets() //Doesn't do anything.
 	else if (W == s_store)
 		s_store = null
 		update_inv_s_store()
@@ -195,8 +197,7 @@ This saves us from having to call add_fingerprint() any time something is put in
 
 
 //This is an UNSAFE proc. Use mob_can_equip() before calling this one! Or rather use equip_to_slot_if_possible() or advanced_equip_to_slot_if_possible()
-//set redraw_mob to 0 if you don't wish the hud to be updated - if you're doing it manually in your own proc.
+/mob/living/carbon/human/equip_to_slot(obj/item/W as obj, slot)
-/mob/living/carbon/human/equip_to_slot(obj/item/W as obj, slot, redraw_mob = 1)
 
 	if(!slot)
 		return
@@ -213,39 +214,41 @@ This saves us from having to call add_fingerprint() any time something is put in
 			src.back = W
 			W.equipped(src, slot)
 			worn_clothing += back
-			update_inv_back(redraw_mob)
+			update_inv_back()
 		if(slot_wear_mask)
 			src.wear_mask = W
 			if(wear_mask.flags_inv & (BLOCKHAIR|BLOCKHEADHAIR))
-				update_hair(redraw_mob)	//rebuild hair
+				update_hair()	//rebuild hair
-				update_inv_ears(0)
+				update_inv_ears()
 			W.equipped(src, slot)
 			worn_clothing += wear_mask
-			update_inv_wear_mask(redraw_mob)
+			update_inv_wear_mask()
 		if(slot_handcuffed)
 			src.handcuffed = W
-			update_inv_handcuffed(redraw_mob)
+			update_inv_handcuffed()
 		if(slot_legcuffed)
 			src.legcuffed = W
 			W.equipped(src, slot)
-			update_inv_legcuffed(redraw_mob)
+			update_inv_legcuffed()
 		if(slot_l_hand)
 			src.l_hand = W
 			W.equipped(src, slot)
-			update_inv_l_hand(redraw_mob)
+			update_inv_l_hand()
 		if(slot_r_hand)
 			src.r_hand = W
 			W.equipped(src, slot)
-			update_inv_r_hand(redraw_mob)
+			update_inv_r_hand()
 		if(slot_belt)
 			src.belt = W
 			W.equipped(src, slot)
 			worn_clothing += belt
-			update_inv_belt(redraw_mob)
+			update_inv_belt()
 		if(slot_wear_id)
 			src.wear_id = W
 			W.equipped(src, slot)
-			update_inv_wear_id(redraw_mob)
+			update_inv_wear_id()
+			BITSET(hud_updateflag, ID_HUD)
+			BITSET(hud_updateflag, WANTED_HUD)
 		if(slot_l_ear)
 			src.l_ear = W
 			if(l_ear.slot_flags & SLOT_TWOEARS)
@@ -254,7 +257,7 @@ This saves us from having to call add_fingerprint() any time something is put in
 				src.r_ear = O
 				O.hud_layerise()
 			W.equipped(src, slot)
-			update_inv_ears(redraw_mob)
+			update_inv_ears()
 		if(slot_r_ear)
 			src.r_ear = W
 			if(r_ear.slot_flags & SLOT_TWOEARS)
@@ -263,54 +266,54 @@ This saves us from having to call add_fingerprint() any time something is put in
 				src.l_ear = O
 				O.hud_layerise()
 			W.equipped(src, slot)
-			update_inv_ears(redraw_mob)
+			update_inv_ears()
 		if(slot_glasses)
 			src.glasses = W
 			W.equipped(src, slot)
-			update_inv_glasses(redraw_mob)
+			update_inv_glasses()
 		if(slot_gloves)
 			src.gloves = W
 			W.equipped(src, slot)
 			worn_clothing += glasses
-			update_inv_gloves(redraw_mob)
+			update_inv_gloves()
 		if(slot_head)
 			src.head = W
 			if(head.flags_inv & (BLOCKHAIR|BLOCKHEADHAIR|HIDEMASK))
-				update_hair(redraw_mob)	//rebuild hair
+				update_hair()	//rebuild hair
 				update_inv_ears(0)
 				update_inv_wear_mask(0)
 			if(istype(W,/obj/item/clothing/head/kitty))
 				W.update_icon(src)
 			W.equipped(src, slot)
 			worn_clothing += head
-			update_inv_head(redraw_mob)
+			update_inv_head()
 		if(slot_shoes)
 			src.shoes = W
 			W.equipped(src, slot)
 			worn_clothing += shoes
-			update_inv_shoes(redraw_mob)
+			update_inv_shoes()
 		if(slot_wear_suit)
 			src.wear_suit = W
 			W.equipped(src, slot)
 			worn_clothing += wear_suit
-			update_inv_wear_suit(redraw_mob)
+			update_inv_wear_suit()
 		if(slot_w_uniform)
 			src.w_uniform = W
 			W.equipped(src, slot)
 			worn_clothing += w_uniform
-			update_inv_w_uniform(redraw_mob)
+			update_inv_w_uniform()
 		if(slot_l_store)
 			src.l_store = W
 			W.equipped(src, slot)
-			update_inv_pockets(redraw_mob)
+			//update_inv_pockets() //Doesn't do anything
 		if(slot_r_store)
 			src.r_store = W
 			W.equipped(src, slot)
-			update_inv_pockets(redraw_mob)
+			//update_inv_pockets() //Doesn't do anything
 		if(slot_s_store)
 			src.s_store = W
 			W.equipped(src, slot)
-			update_inv_s_store(redraw_mob)
+			update_inv_s_store()
 		if(slot_in_backpack)
 			if(src.get_active_hand() == W)
 				src.remove_from_mob(W)

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

@@ -1582,26 +1582,24 @@
 	we only set those statuses and icons upon changes.  Then those HUD items will simply add those pre-made images.
 	This proc below is only called when those HUD elements need to change as determined by the mobs hud_updateflag.
 */
-
-
 /mob/living/carbon/human/proc/handle_hud_list()
 	if (BITTEST(hud_updateflag, HEALTH_HUD))
-		var/image/holder = hud_list[HEALTH_HUD]
+		var/image/holder = grab_hud(HEALTH_HUD)
 		if(stat == DEAD)
 			holder.icon_state = "-100" 	// X_X
 		else
 			holder.icon_state = RoundHealth((health-config.health_threshold_crit)/(getMaxHealth()-config.health_threshold_crit)*100)
-		hud_list[HEALTH_HUD] = holder
+		apply_hud(HEALTH_HUD, holder)
 
 	if (BITTEST(hud_updateflag, LIFE_HUD))
-		var/image/holder = hud_list[LIFE_HUD]
+		var/image/holder = grab_hud(LIFE_HUD)
 		if(isSynthetic())
 			holder.icon_state = "hudrobo"
 		else if(stat == DEAD)
 			holder.icon_state = "huddead"
 		else
 			holder.icon_state = "hudhealthy"
-		hud_list[LIFE_HUD] = holder
+		apply_hud(LIFE_HUD, holder)
 
 	if (BITTEST(hud_updateflag, STATUS_HUD))
 		var/foundVirus = 0
@@ -1610,8 +1608,8 @@
 				foundVirus = 1
 				break
 
-		var/image/holder = hud_list[STATUS_HUD]
+		var/image/holder = grab_hud(STATUS_HUD)
-		var/image/holder2 = hud_list[STATUS_HUD_OOC]
+		var/image/holder2 = grab_hud(STATUS_HUD_OOC)
 		if (isSynthetic())
 			holder.icon_state = "hudrobo"
 		else if(stat == DEAD)
@@ -1633,11 +1631,11 @@
 			else
 				holder2.icon_state = "hudhealthy"
 
-		hud_list[STATUS_HUD] = holder
+		apply_hud(STATUS_HUD, holder)
-		hud_list[STATUS_HUD_OOC] = holder2
+		apply_hud(STATUS_HUD_OOC, holder2)
 
 	if (BITTEST(hud_updateflag, ID_HUD))
-		var/image/holder = hud_list[ID_HUD]
+		var/image/holder = grab_hud(ID_HUD)
 		if(wear_id)
 			var/obj/item/weapon/card/id/I = wear_id.GetID()
 			if(I)
@@ -1647,11 +1645,10 @@
 		else
 			holder.icon_state = "hudunknown"
 
-
+		apply_hud(ID_HUD, holder)
-		hud_list[ID_HUD] = holder
 
 	if (BITTEST(hud_updateflag, WANTED_HUD))
-		var/image/holder = hud_list[WANTED_HUD]
+		var/image/holder = grab_hud(WANTED_HUD)
 		holder.icon_state = "hudblank"
 		var/perpname = name
 		if(wear_id)
@@ -1674,15 +1671,16 @@
 					else if((R.fields["id"] == E.fields["id"]) && (R.fields["criminal"] == "Released"))
 						holder.icon_state = "hudreleased"
 						break
-		hud_list[WANTED_HUD] = holder
+		
+		apply_hud(WANTED_HUD, holder)
 
 	if (  BITTEST(hud_updateflag, IMPLOYAL_HUD) \
 	   || BITTEST(hud_updateflag,  IMPCHEM_HUD) \
 	   || BITTEST(hud_updateflag, IMPTRACK_HUD))
 
-		var/image/holder1 = hud_list[IMPTRACK_HUD]
+		var/image/holder1 = grab_hud(IMPTRACK_HUD)
-		var/image/holder2 = hud_list[IMPLOYAL_HUD]
+		var/image/holder2 = grab_hud(IMPLOYAL_HUD)
-		var/image/holder3 = hud_list[IMPCHEM_HUD]
+		var/image/holder3 = grab_hud(IMPCHEM_HUD)
 
 		holder1.icon_state = "hudblank"
 		holder2.icon_state = "hudblank"
@@ -1698,21 +1696,21 @@
 					if(istype(I,/obj/item/weapon/implant/chem))
 						holder3.icon_state = "hud_imp_chem"
 
-		hud_list[IMPTRACK_HUD] = holder1
+		apply_hud(IMPTRACK_HUD, holder1)
-		hud_list[IMPLOYAL_HUD] = holder2
+		apply_hud(IMPLOYAL_HUD, holder2)
-		hud_list[IMPCHEM_HUD]  = holder3
+		apply_hud(IMPCHEM_HUD, holder3)
 
 	if (BITTEST(hud_updateflag, SPECIALROLE_HUD))
-		var/image/holder = hud_list[SPECIALROLE_HUD]
+		var/image/holder = grab_hud(SPECIALROLE_HUD)
 		holder.icon_state = "hudblank"
 		if(mind && mind.special_role)
 			if(hud_icon_reference[mind.special_role])
 				holder.icon_state = hud_icon_reference[mind.special_role]
 			else
 				holder.icon_state = "hudsyndicate"
-			hud_list[SPECIALROLE_HUD] = holder
+		apply_hud(SPECIALROLE_HUD, holder)
+	
 	hud_updateflag = 0
-	update_icons_huds()
 
 /mob/living/carbon/human/handle_stunned()
 	if(!can_feel_pain())

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

@@ -1,142 +1,62 @@
 /*
 	Global associative list for caching humanoid icons.
 	Index format m or f, followed by a string of 0 and 1 to represent bodyparts followed by husk fat hulk skeleton 1 or 0.
-	TODO: Proper documentation
-	icon_key is [species.race_key][g][husk][fat][hulk][skeleton][s_tone]
 */
-var/global/list/human_icon_cache = list()
+var/global/list/human_icon_cache = list() //key is incredibly complex, see update_icons_body()
 var/global/list/tail_icon_cache = list() //key is [species.race_key][r_skin][g_skin][b_skin]
-var/global/list/light_overlay_cache = list()
+var/global/list/light_overlay_cache = list() //see make_worn_icon() on helmets
+var/global/list/damage_icon_parts = list() //see UpdateDamageIcon()
 
+//Add an entry to overlays, assuming it exists
 /mob/living/carbon/human/proc/apply_layer(cache_index)
 	if((. = overlays_standing[cache_index]))
 		add_overlay(.)
 
+//Remove an entry from overlays, and from the list
 /mob/living/carbon/human/proc/remove_layer(cache_index)
 	var/I = overlays_standing[cache_index]
 	if(I)
 		cut_overlay(I)
 		overlays_standing[cache_index] = null
 
-	///////////////////////
+// These are used as the layers for the icons, as well as indexes in a list that holds onto them.
-	//UPDATE_ICONS SYSTEM//
+// Technically the layers used are all -100+layer to make them FLOAT_LAYER overlays.
-	///////////////////////
-/*
-Calling this  a system is perhaps a bit trumped up. It is essentially update_clothing dismantled into its
-core parts. The key difference is that when we generate overlays we do not generate either lying or standing
-versions. Instead, we generate both and store them in two fixed-length lists, both using the same list-index
-(The indexes are in update_icons.dm): Each list for humans is (at the time of writing) of length 19.
-This will hopefully be reduced as the system is refined.
-	var/overlays_lying[19]			//For the lying down stance
-	var/overlays_standing[19]		//For the standing stance
-When we call update_icons, the 'lying' variable is checked and then the appropriate list is assigned to our overlays!
-That in itself uses a tiny bit more memory (no more than all the ridiculous lists the game has already mind you).
-On the other-hand, it should be very CPU cheap in comparison to the old system.
-In the old system, we updated all our overlays every life() call, even if we were standing still inside a crate!
-or dead!. 25ish overlays, all generated from scratch every second for every xeno/human/monkey and then applied.
-More often than not update_clothing was being called a few times in addition to that! CPU was not the only issue,
-all those icons had to be sent to every client. So really the cost was extremely cumulative. To the point where
-update_clothing would frequently appear in the top 10 most CPU intensive procs during profiling.
-Another feature of this new system is that our lists are indexed. This means we can update specific overlays!
-So we only regenerate icons when we need them to be updated! This is the main saving for this system.
-In practice this means that:
-	everytime you fall over, we just switch between precompiled lists. Which is fast and cheap.
-	Everytime you do something minor like take a pen out of your pocket, we only update the in-hand overlay
-	etc...
-There are several things that need to be remembered:
->	Whenever we do something that should cause an overlay to update (which doesn't use standard procs
-	( i.e. you do something like l_hand = /obj/item/something new(src) )
-	You will need to call the relevant update_inv_* proc:
-		update_inv_head()
-		update_inv_wear_suit()
-		update_inv_gloves()
-		update_inv_shoes()
-		update_inv_w_uniform()
-		update_inv_glasse()
-		update_inv_l_hand()
-		update_inv_r_hand()
-		update_inv_belt()
-		update_inv_wear_id()
-		update_inv_ears()
-		update_inv_s_store()
-		update_inv_pockets()
-		update_inv_back()
-		update_inv_handcuffed()
-		update_inv_wear_mask()
-	All of these are named after the variable they update from. They are defined at the mob/ level like
-	update_clothing was, so you won't cause undefined proc runtimes with usr.update_inv_wear_id() if the usr is a
-	slime etc. Instead, it'll just return without doing any work. So no harm in calling it for slimes and such.
->	There are also these special cases:
-		update_mutations()	//handles updating your appearance for certain mutations.  e.g TK head-glows
-		UpdateDamageIcon()	//handles damage overlays for brute/burn damage //(will rename this when I geta round to it)
-		update_icons_body()	//Handles updating your mob's icon to reflect their gender/race/complexion etc
-		update_hair()	//Handles updating your hair overlay (used to be update_face, but mouth and
-																			...eyes were merged into update_body)
-		update_targeted() // Updates the target overlay when someone points a gun at you
->	All of these procs update our overlays_lying and overlays_standing, and then call update_icons() by default.
-	If you wish to update several overlays at once, you can set the argument to 0 to disable the update and call
-	it manually:
-		e.g.
-		update_inv_head(0)
-		update_inv_l_hand(0)
-		update_inv_r_hand()		//<---calls update_icons()
-	or equivillantly:
-		update_inv_head(0)
-		update_inv_l_hand(0)
-		update_inv_r_hand(0)
-		update_icons()
->	If you need to update all overlays you can use regenerate_icons(). it works exactly like update_clothing used to.
->	I reimplimented an old unused variable which was in the code called (coincidentally) var/update_icon
-	It can be used as another method of triggering regenerate_icons(). It's basically a flag that when set to non-zero
-	will call regenerate_icons() at the next life() call and then reset itself to 0.
-	The idea behind it is icons are regenerated only once, even if multiple events requested it.
-This system is confusing and is still a WIP. It's primary goal is speeding up the controls of the game whilst
-reducing processing costs. So please bear with me while I iron out the kinks. It will be worth it, I promise.
-If I can eventually free var/lying stuff from the life() process altogether, stuns/death/status stuff
-will become less affected by lag-spikes and will be instantaneous! :3
-If you have any questions/constructive-comments/bugs-to-report/or have a massivly devestated butt...
-Please contact me on #coderbus IRC. ~Carn x
-*/
-
 //Human Overlays Indexes/////////
 #define MUTATIONS_LAYER			1		//Mutations like fat, and lasereyes
 #define SKIN_LAYER				2		//Skin things added by a call on species
-#define DAMAGE_LAYER			3		//Injury overlay sprites like open wounds
+#define BLOOD_LAYER				3		//Bloodied hands/feet/anything else
-#define SURGERY_LEVEL			4		//Overlays for open surgical sites
+#define DAMAGE_LAYER			4		//Injury overlay sprites like open wounds
-#define UNDERWEAR_LAYER  		5		//Underwear/bras/etc
+#define SURGERY_LAYER			5		//Overlays for open surgical sites
-#define SHOES_LAYER_ALT			6		//Shoe-slot item (when set to be under uniform via verb)
+#define UNDERWEAR_LAYER  		6		//Underwear/bras/etc
-#define UNIFORM_LAYER			7		//Uniform-slot item
+#define SHOES_LAYER_ALT			7		//Shoe-slot item (when set to be under uniform via verb)
-#define ID_LAYER				8		//ID-slot item
+#define UNIFORM_LAYER			8		//Uniform-slot item
-#define SHOES_LAYER				9		//Shoe-slot item
+#define ID_LAYER				9		//ID-slot item
-#define GLOVES_LAYER			10		//Glove-slot item
+#define SHOES_LAYER				10		//Shoe-slot item
-#define BELT_LAYER				11		//Belt-slot item
+#define GLOVES_LAYER			11		//Glove-slot item
-#define SUIT_LAYER				12		//Suit-slot item
+#define BELT_LAYER				12		//Belt-slot item
-#define TAIL_LAYER				13		//Some species have tails to render
+#define SUIT_LAYER				13		//Suit-slot item
-#define GLASSES_LAYER			14		//Eye-slot item
+#define TAIL_LAYER				14		//Some species have tails to render
-#define BELT_LAYER_ALT			15		//Belt-slot item (when set to be above suit via verb)
+#define GLASSES_LAYER			15		//Eye-slot item
-#define SUIT_STORE_LAYER		16		//Suit storage-slot item
+#define BELT_LAYER_ALT			16		//Belt-slot item (when set to be above suit via verb)
-#define BACK_LAYER				17		//Back-slot item
+#define SUIT_STORE_LAYER		17		//Suit storage-slot item
-#define HAIR_LAYER				18		//The human's hair
+#define BACK_LAYER				18		//Back-slot item
-#define EARS_LAYER				19		//Both ear-slot items (combined image)
+#define HAIR_LAYER				19		//The human's hair
-#define EYES_LAYER				20		//Mob's eyes (used for glowing eyes)
+#define EARS_LAYER				20		//Both ear-slot items (combined image)
-#define FACEMASK_LAYER			21		//Mask-slot item
+#define EYES_LAYER				21		//Mob's eyes (used for glowing eyes)
-#define HEAD_LAYER				22		//Head-slot item
+#define FACEMASK_LAYER			22		//Mask-slot item
-#define HANDCUFF_LAYER			23		//Handcuffs, if the human is handcuffed, in a secret inv slot
+#define HEAD_LAYER				23		//Head-slot item
-#define LEGCUFF_LAYER			24		//Same as handcuffs, for legcuffs
+#define HANDCUFF_LAYER			24		//Handcuffs, if the human is handcuffed, in a secret inv slot
-#define L_HAND_LAYER			25		//Left-hand item
+#define LEGCUFF_LAYER			25		//Same as handcuffs, for legcuffs
-#define R_HAND_LAYER			26		//Right-hand item
+#define L_HAND_LAYER			26		//Left-hand item
-#define MODIFIER_EFFECTS_LAYER	27		//Effects drawn by modifiers
+#define R_HAND_LAYER			27		//Right-hand item
-#define FIRE_LAYER				28		//'Mob on fire' overlay layer
+#define MODIFIER_EFFECTS_LAYER	28		//Effects drawn by modifiers
-#define WATER_LAYER				29		//'Mob submerged' overlay layer
+#define FIRE_LAYER				29		//'Mob on fire' overlay layer
-#define TARGETED_LAYER			30		//'Aimed at' overlay layer
+#define WATER_LAYER				30		//'Mob submerged' overlay layer
-#define TOTAL_LAYERS			30//<---- KEEP THIS UPDATED, should always equal the highest number here, used to initialize a list.
+#define TARGETED_LAYER			31		//'Aimed at' overlay layer
+#define TOTAL_LAYERS			32//<---- KEEP THIS UPDATED, should always equal the highest number here, used to initialize a list.
 //////////////////////////////////
 
 /mob/living/carbon/human
-	var/list/list_huds = list()
-	var/list/list_body = list()
-	var/list/list_layers = list()
-
 	var/list/overlays_standing[TOTAL_LAYERS]
 	var/previous_damage_appearance // store what the body last looked like, so we only have to update it if something changed
 
@@ -146,31 +66,23 @@ Please contact me on #coderbus IRC. ~Carn x
 	if(QDESTROYING(src))
 		return
 
-	lying_prev = lying	//so we don't update overlays for lying/standing unless our stance changes again
+	crash_with("CANARY: Old human update_icons was called.")
+
 	update_hud()		//TODO: remove the need for this
 
-	//1: HUDs because these are hidden behind a backplane. See update_icons_huds()
+	//Do any species specific layering updates, such as when hiding.
-	//add_underlay(list_huds) //The first one can set instead of add
+	update_icon_special()
 
-	//2: The 'layers' list (overlays_standing), from the defines above
+/mob/living/carbon/human/update_icons_layers()
-	//add_overlay(list_layers)
+	crash_with("CANARY: Old human update_icons was called.")
 
-	//3: Apply transforms based on situation
+/mob/living/carbon/human/update_icons_all()
-	update_transform()
+	crash_with("CANARY: Old human update_icons_all was called.")
 
-	//4: Do any species specific layering updates, such as when hiding.
+/mob/living/carbon/human/update_icons_huds()
-	update_icon_special(FALSE)
+	crash_with("CANARY: Old human update_icons_huds was called.")
-
-/mob/living/carbon/human/update_transform(var/mutable_appearance/passed_ma)
-	if(QDESTROYING(src))
-		return
-
-	var/mutable_appearance/ma
-	if(passed_ma)
-		ma = passed_ma
-	else
-		ma = new(src)
 
+/mob/living/carbon/human/update_transform()
 	// First, get the correct size.
 	var/desired_scale = icon_scale
 
@@ -181,90 +93,23 @@ Please contact me on #coderbus IRC. ~Carn x
 			desired_scale *= M.icon_scale_percent
 
 	// Regular stuff again.
-	if(lying && !species.prone_icon) //Only rotate them if we're not drawing a specific icon for being prone.
 	var/matrix/M = matrix()
+	if(lying && !species.prone_icon) //Only rotate them if we're not drawing a specific icon for being prone.
 		M.Turn(90)
 		M.Scale(desired_scale)
 		M.Translate(1,-6)
-		ma.transform = M
+		layer = MOB_LAYER -0.01 // Fix for a byond bug where turf entry order no longer matters
-		ma.layer = MOB_LAYER -0.01 // Fix for a byond bug where turf entry order no longer matters
 	else
-		var/matrix/M = matrix()
 		M.Scale(desired_scale)
 		M.Translate(0, 16*(desired_scale-1))
-		ma.transform = M
+		layer = MOB_LAYER // Fix for a byond bug where turf entry order no longer matters
-		ma.layer = MOB_LAYER // Fix for a byond bug where turf entry order no longer matters
 
-	if(!passed_ma)
+	animate(src, transform = M, time = 0.5 SECONDS)
-		update_icon_special(ma)
+	update_icon_special() //May contain transform-altering things
-		appearance = ma
 
-//Update the layers from the defines above
-/mob/living/carbon/human/update_icons_layers(var/update_icons = 1)
-	if(QDESTROYING(src))
-		return
-
-	list_layers.Cut()
-
-	for(var/entry in overlays_standing)
-		if(istype(entry, /image))
-			list_layers += entry
-		else if(istype(entry, /list))
-			for(var/inner_entry in entry)
-				list_layers += inner_entry
-
-	if(species && species.has_floating_eyes)
-		list_layers += species.get_eyes(src)
-
-	if(update_icons)
-		update_icons()
-
-//HUD Icons (ingame huds, not the user interface)
-//Update things like med/sec hud icons
-/mob/living/carbon/human/update_icons_huds(var/update_icons = 1)
-	if(QDESTROYING(src))
-		return
-
-	cut_overlay(list_huds)
-
-	list_huds.Cut()
-
-	if(has_huds)
-		list_huds = hud_list.Copy()
-		list_huds += backplane // Required to mask HUDs in context menus: http://www.byond.com/forum/?post=2336679
-
-	//Typing indicator code
-	if(client && !stat) //They have a client & aren't dead/KO'd? Continue on!
-		if(typing_indicator && hud_typing) //They already have the indicator and are still typing
-			list_huds += typing_indicator
-			typing_indicator.invisibility = invisibility
-
-		else if(!typing_indicator && hud_typing) //Are they in their body, NOT dead, have hud_typing, do NOT have a typing indicator. and have it enabled?
-			typing_indicator = image(icon = 'icons/mob/talk.dmi', icon_state = "[speech_bubble_appearance()]_typing")
-			list_huds += typing_indicator
-
-		else if(typing_indicator && !hud_typing) //Did they stop typing?
-			typing = FALSE
-			hud_typing = FALSE
-
-	add_overlay(list_huds)
-
-//A full, crunchy reprocess of all three cached lists
-/mob/living/carbon/human/update_icons_all(var/update_icons = 1)
-	if(QDESTROYING(src))
-		return
-
-	update_icons_huds(FALSE)
-	update_icons_body(FALSE)
-	update_icons_layers(FALSE)
-
-	if(update_icons)
-		update_icons()
-
-var/global/list/damage_icon_parts = list()
 //DAMAGE OVERLAYS
 //constructs damage icon for each organ from mask * damage field and saves it in our overlays_ lists
-/mob/living/carbon/human/UpdateDamageIcon(var/update_icons=1)
+/mob/living/carbon/human/UpdateDamageIcon()
 	if(QDESTROYING(src))
 		return
 
@@ -309,7 +154,7 @@ var/global/list/damage_icon_parts = list()
 	apply_layer(DAMAGE_LAYER)
 
 //BASE MOB SPRITE
-/mob/living/carbon/human/update_icons_body(var/update_icons=1)
+/mob/living/carbon/human/update_icons_body()
 	if(QDESTROYING(src))
 		return
 
@@ -321,7 +166,7 @@ var/global/list/damage_icon_parts = list()
 	var/hulk = (HULK in src.mutations)
 	var/skeleton = (SKELETON in src.mutations)
 
-	robolimb_count = 0
+	robolimb_count = 0 //TODO, here, really tho?
 	robobody_count = 0
 
 	//CACHING: Generate an index key from visible bodyparts.
@@ -330,9 +175,6 @@ var/global/list/damage_icon_parts = list()
 	//Create a new, blank icon for our mob to use.
 	var/icon/stand_icon = new(species.icon_template ? species.icon_template : 'icons/mob/human.dmi', icon_state = "blank")
 
-	//Clean old list_body
-	list_body.Cut()
-
 	var/g = "male"
 	if(gender == FEMALE)
 		g = "female"
@@ -433,13 +275,10 @@ var/global/list/damage_icon_parts = list()
 	stand_icon.Blend(base_icon,ICON_OVERLAY)
 	icon = stand_icon
 
-	if(update_icons)
-		update_icons()
-
 	//tail
-	update_tail_showing(0)
+	update_tail_showing()
 
-/mob/living/carbon/human/proc/update_skin(var/update_icons=1)
+/mob/living/carbon/human/proc/update_skin()
 	if(QDESTROYING(src))
 		return
 
@@ -451,8 +290,34 @@ var/global/list/damage_icon_parts = list()
 		overlays_standing[SKIN_LAYER] = skin
 		apply_layer(SKIN_LAYER)
 
+/mob/living/carbon/human/proc/update_bloodied()
+	if(QDESTROYING(src))
+		return
+
+	remove_layer(BLOOD_LAYER)
+	if(!blood_DNA && !feet_blood_DNA)
+		return
+
+	var/image/both = image(icon = 'icons/effects/effects.dmi', icon_state = "nothing", layer = BODY_LAYER+BLOOD_LAYER)
+	
+	//Bloody hands
+	if(blood_DNA)
+		var/image/bloodsies	= image(icon = species.get_blood_mask(src), icon_state = "bloodyhands", layer = BODY_LAYER+BLOOD_LAYER)
+		bloodsies.color = hand_blood_color
+		both.add_overlay(bloodsies)
+
+	//Bloody feet
+	if(feet_blood_DNA)
+		var/image/bloodsies = image(icon = species.get_blood_mask(src), icon_state = "shoeblood", layer = BODY_LAYER+BLOOD_LAYER)
+		bloodsies.color = feet_blood_color
+		both.add_overlay(bloodsies)
+
+	overlays_standing[BLOOD_LAYER] = both
+
+	apply_layer(BLOOD_LAYER)
+
 //UNDERWEAR OVERLAY
-/mob/living/carbon/human/proc/update_underwear(var/update_icons=1)
+/mob/living/carbon/human/proc/update_underwear()
 	if(QDESTROYING(src))
 		return
 
@@ -470,13 +335,13 @@ var/global/list/damage_icon_parts = list()
 		apply_layer(UNDERWEAR_LAYER)
 
 //HAIR OVERLAY
-/mob/living/carbon/human/proc/update_hair(var/update_icons=1)
+/mob/living/carbon/human/proc/update_hair()
 	if(QDESTROYING(src))
 		return
 
 	//Reset our hair
 	remove_layer(HAIR_LAYER)
-	update_eyes(0) //Pirated out of here, for glowing eyes.
+	update_eyes() //Pirated out of here, for glowing eyes.
 
 	var/obj/item/organ/external/head/head_organ = get_organ(BP_HEAD)
 	if(!head_organ || head_organ.is_stump() )
@@ -484,7 +349,6 @@ var/global/list/damage_icon_parts = list()
 
 	//masks and helmets can obscure our hair.
 	if( (head && (head.flags_inv & BLOCKHAIR)) || (wear_mask && (wear_mask.flags_inv & BLOCKHAIR)))
-		if(update_icons)   update_icons_layers()
 		return
 
 	//base icons
@@ -516,7 +380,7 @@ var/global/list/damage_icon_parts = list()
 	overlays_standing[HAIR_LAYER] = image(face_standing, layer = BODY_LAYER+HAIR_LAYER)
 	apply_layer(HAIR_LAYER)
 
-/mob/living/carbon/human/update_eyes(var/update_icons=1)
+/mob/living/carbon/human/update_eyes()
 	if(QDESTROYING(src))
 		return
 
@@ -555,7 +419,7 @@ var/global/list/damage_icon_parts = list()
 	overlays_standing[EYES_LAYER] = eyes_image
 	apply_layer(EYES_LAYER)
 
-/mob/living/carbon/human/update_mutations(var/update_icons=1)
+/mob/living/carbon/human/update_mutations()
 	if(QDESTROYING(src))
 		return
 
@@ -588,54 +452,52 @@ var/global/list/damage_icon_parts = list()
 	apply_layer(MUTATIONS_LAYER)
 
 /* --------------------------------------- */
-//For legacy support.
+//Recomputes every icon on the mob. Expensive.
+//Useful if the species changed, or there's some
+//other drastic body-shape change, but otherwise avoid.
 /mob/living/carbon/human/regenerate_icons()
 	..()
-	if(transforming || QDELETED(src))		return
+	if(transforming || QDELETED(src))
+		return
 
-	update_mutations(0)
+	update_icons_body()
-	update_skin(0)
+	UpdateDamageIcon()
-	update_icons_body(0)
+	update_mutations()
-	update_underwear(0)
+	update_skin()
-	update_hair(0)
+	update_underwear()
-	update_inv_w_uniform(0)
+	update_hair()
-	update_inv_wear_id(0)
+	update_inv_w_uniform()
-	update_inv_gloves(0)
+	update_inv_wear_id()
-	update_inv_glasses(0)
+	update_inv_gloves()
-	update_inv_ears(0)
+	update_inv_glasses()
-	update_inv_shoes(0)
+	update_inv_ears()
-	update_inv_s_store(0)
+	update_inv_shoes()
-	update_inv_wear_mask(0)
+	update_inv_s_store()
-	update_inv_head(0)
+	update_inv_wear_mask()
-	update_inv_belt(0)
+	update_inv_head()
-	update_inv_back(0)
+	update_inv_belt()
-	update_inv_wear_suit(0)
+	update_inv_back()
-	update_inv_r_hand(0)
+	update_inv_wear_suit()
-	update_inv_l_hand(0)
+	update_inv_r_hand()
-	update_inv_handcuffed(0)
+	update_inv_l_hand()
-	update_inv_legcuffed(0)
+	update_inv_handcuffed()
-	update_inv_pockets(0)
+	update_inv_legcuffed()
-	update_fire(0)
+	//update_inv_pockets() //Doesn't do anything
-	update_water(0)
+	update_fire()
-	update_surgery(0)
+	update_water()
-	UpdateDamageIcon(0)
+	update_surgery()
-	update_icons_layers(0)
-	update_icons_huds(0)
-	update_icons()
-	//Hud Stuff
-	update_hud()
 
 /* --------------------------------------- */
 //vvvvvv UPDATE_INV PROCS vvvvvv
 
-/mob/living/carbon/human/update_inv_w_uniform(var/update_icons=1)
+/mob/living/carbon/human/update_inv_w_uniform()
 	if(QDESTROYING(src))
 		return
 
 	remove_layer(UNIFORM_LAYER)
 
 	//Shoes can be affected by uniform being drawn onto them
-	update_inv_shoes(FALSE)
+	update_inv_shoes()
 	
 	if(!w_uniform)
 		return
@@ -643,60 +505,41 @@ var/global/list/damage_icon_parts = list()
 	if(wear_suit && (wear_suit.flags_inv & HIDEJUMPSUIT) && !istype(wear_suit, /obj/item/clothing/suit/space/rig))
 		return //Wearing a suit that prevents uniform rendering
 
-	//Align this item on the inventory screen TODO: Move this elsewhere
-	w_uniform.screen_loc = ui_iclothing
-
 	//Build a uniform sprite
 	overlays_standing[UNIFORM_LAYER] = w_uniform.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_w_uniform_str, default_icon = INV_W_UNIFORM_DEF_ICON, default_layer = UNIFORM_LAYER)
 	apply_layer(UNIFORM_LAYER)
 
-/mob/living/carbon/human/update_inv_wear_id(var/update_icons=1)
+/mob/living/carbon/human/update_inv_wear_id()
 	if(QDESTROYING(src))
 		return
 
-	overlays_standing[ID_LAYER]	= null
+	remove_layer(ID_LAYER)
-
-	//Set the bits to update the ID hud since they put something in this slot (or removed it)
-	//TODO: Move elsewhere, update icons is not the place.
-	BITSET(hud_updateflag, ID_HUD)
-	BITSET(hud_updateflag, WANTED_HUD)
 	
 	if(!wear_id)
 		return //Not wearing an ID
 
-	//Align this item on the inventory screen TODO: Move this elsewhere
-	wear_id.screen_loc = ui_id
-
 	//Only draw the ID on the mob if the uniform allows for it
 	if(w_uniform && istype(w_uniform, /obj/item/clothing/under))
 		var/obj/item/clothing/under/U = w_uniform
 		if(U.displays_id)
 			overlays_standing[ID_LAYER] = wear_id.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_wear_id_str, default_icon = INV_WEAR_ID_DEF_ICON, default_layer = ID_LAYER)
+	
 	apply_layer(ID_LAYER)
 
-/mob/living/carbon/human/update_inv_gloves(var/update_icons=1)
+/mob/living/carbon/human/update_inv_gloves()
 	if(QDESTROYING(src))
 		return
 
 	remove_layer(GLOVES_LAYER)
 
-	if(!gloves && !blood_DNA)
+	if(!gloves)
-		return //No gloves, no bloody hands, no reason to be here.
+		return //No gloves, no reason to be here.
-
-	//Draw gloves if they have gloves
-	if(gloves)
-		gloves.screen_loc = ui_gloves //TODO
 
 	overlays_standing[GLOVES_LAYER]	= gloves.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_gloves_str, default_icon = INV_GLOVES_DEF_ICON, default_layer = GLOVES_LAYER)
 	
-	else if(blood_DNA) //TODO: Make this proc generic
-		var/image/bloodsies	= image(icon = species.get_blood_mask(src), icon_state = "bloodyhands")
-		bloodsies.color = hand_blood_color
-		overlays_standing[GLOVES_LAYER]	= bloodsies
-
 	apply_layer(GLOVES_LAYER)
 
-/mob/living/carbon/human/update_inv_glasses(var/update_icons=1)
+/mob/living/carbon/human/update_inv_glasses()
 	if(QDESTROYING(src))
 		return
 
@@ -705,12 +548,11 @@ var/global/list/damage_icon_parts = list()
 	if(!glasses)
 		return //Not wearing glasses, no need to update anything.
 
-	glasses.screen_loc = ui_glasses //TODO
-
 	overlays_standing[GLASSES_LAYER] = glasses.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_gloves_str, default_icon = INV_EYES_DEF_ICON, default_layer = GLASSES_LAYER)
+	
 	apply_layer(GLASSES_LAYER)
 
-/mob/living/carbon/human/update_inv_ears(var/update_icons=1)
+/mob/living/carbon/human/update_inv_ears()
 	if(QDESTROYING(src))
 		return
 
@@ -726,31 +568,27 @@ var/global/list/damage_icon_parts = list()
 	var/image/both = image(icon = 'icons/effects/effects.dmi', icon_state = "nothing", layer = BODY_LAYER+EARS_LAYER)
 
 	if(l_ear)
-		l_ear.screen_loc = ui_l_ear //TODO
 		var/image/standing = l_ear.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_l_ear_str, default_icon = INV_EARS_DEF_ICON, default_layer = EARS_LAYER)
 		both.add_overlay(standing)
 
 	if(r_ear)
-		r_ear.screen_loc = ui_r_ear //TODO
 		var/image/standing = r_ear.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_r_ear_str, default_icon = INV_EARS_DEF_ICON, default_layer = EARS_LAYER)
 		both.add_overlay(standing)
 
 	overlays_standing[EARS_LAYER] = both
 	apply_layer(EARS_LAYER)
 
-/mob/living/carbon/human/update_inv_shoes(var/update_icons=1)
+/mob/living/carbon/human/update_inv_shoes()
 	if(QDESTROYING(src))
 		return
 
 	remove_layer(SHOES_LAYER)
 	remove_layer(SHOES_LAYER_ALT) //Dumb alternate layer for shoes being under the uniform.
 
-	if((!shoes && !feet_blood_DNA) || (wear_suit && wear_suit.flags_inv & HIDESHOES) || (w_uniform && w_uniform.flags_inv & HIDESHOES))
+	if(!shoes || (wear_suit && wear_suit.flags_inv & HIDESHOES) || (w_uniform && w_uniform.flags_inv & HIDESHOES))
 		return //Either nothing to draw, or it'd be hidden.
 
-	if(shoes)
 	//Allow for shoe layer toggle nonsense
-		shoes.screen_loc = ui_shoes //TODO
 	var/shoe_layer = SHOES_LAYER
 	if(istype(shoes, /obj/item/clothing/shoes))
 		var/obj/item/clothing/shoes/ushoes = shoes
@@ -759,16 +597,11 @@ var/global/list/damage_icon_parts = list()
 
 	//NB: the use of a var for the layer on this one
 	overlays_standing[shoe_layer] = shoes.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_shoes_str, default_icon = INV_FEET_DEF_ICON, default_layer = shoe_layer)
-		apply_layer(shoe_layer)
 	
-	//Bloody feet, but not wearing shoes TODO
-	else if(feet_blood_DNA)
-		var/image/bloodsies = image(icon = species.get_blood_mask(src), icon_state = "shoeblood")
-		bloodsies.color = feet_blood_color
-		overlays_standing[SHOES_LAYER] = bloodsies
 	apply_layer(SHOES_LAYER)
+	apply_layer(SHOES_LAYER_ALT)
 	
-/mob/living/carbon/human/update_inv_s_store(var/update_icons=1)
+/mob/living/carbon/human/update_inv_s_store()
 	if(QDESTROYING(src))
 		return
 
@@ -777,17 +610,16 @@ var/global/list/damage_icon_parts = list()
 	if(!s_store)
 		return //Why bother, nothing there.
 	
-	s_store.screen_loc = ui_sstore1		//TODO
-	
 	//TODO, this is unlike the rest of the things
 	//Basically has no variety in slot icon choices at all. WHY SPECIES ONLY??
 	var/t_state = s_store.item_state
 	if(!t_state)
 		t_state = s_store.icon_state
 	overlays_standing[SUIT_STORE_LAYER]	= image(icon = species.suit_storage_icon, icon_state = t_state, layer = BODY_LAYER+SUIT_STORE_LAYER)
+	
 	apply_layer(SUIT_STORE_LAYER)
 
-/mob/living/carbon/human/update_inv_head(var/update_icons=1)
+/mob/living/carbon/human/update_inv_head()
 	if(QDESTROYING(src))
 		return
 
@@ -796,12 +628,11 @@ var/global/list/damage_icon_parts = list()
 	if(!head)
 		return //No head item, why bother.
 
-	head.screen_loc = ui_head //TODO
-
 	overlays_standing[HEAD_LAYER] = head.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_head_str, default_icon = INV_HEAD_DEF_ICON, default_layer = HEAD_LAYER)
+	
 	apply_layer(HEAD_LAYER)
 
-/mob/living/carbon/human/update_inv_belt(var/update_icons=1)
+/mob/living/carbon/human/update_inv_belt()
 	if(QDESTROYING(src))
 		return
 
@@ -811,8 +642,6 @@ var/global/list/damage_icon_parts = list()
 	if(!belt)
 		return //No belt, why bother.
 	
-	belt.screen_loc = ui_belt	//TODO - Distant screaming.
-	
 	//Toggle for belt layering with uniform
 	var/belt_layer = BELT_LAYER
 	if(istype(belt, /obj/item/weapon/storage/belt))
@@ -822,43 +651,31 @@ var/global/list/damage_icon_parts = list()
 
 	//NB: this uses a var from above
 	overlays_standing[belt_layer] = belt.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_belt_str, default_icon = INV_BELT_DEF_ICON, default_layer = belt_layer)
+	
 	apply_layer(belt_layer)
 
-/mob/living/carbon/human/update_inv_wear_suit(var/update_icons=1)
+/mob/living/carbon/human/update_inv_wear_suit()
 	if(QDESTROYING(src))
 		return
 
 	remove_layer(SUIT_LAYER)
 
-	//Hide/show other layers if necessary (AAAAA) TODO
+	//Hide/show other layers if necessary
-	update_inv_w_uniform(FALSE)
+	update_inv_w_uniform()
-	update_inv_shoes(FALSE)
+	update_inv_shoes()
-	update_tail_showing(FALSE)
+	update_tail_showing()
 
 	if(!wear_suit)
 		return //No point, no suit.
 
-	wear_suit.screen_loc = ui_oclothing //TODO
-
 	overlays_standing[SUIT_LAYER] = wear_suit.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_wear_suit_str, default_icon = INV_SUIT_DEF_ICON, default_layer = SUIT_LAYER)
+	
 	apply_layer(SUIT_LAYER)
 
-	//REALLY? REAAAAAAALLY???? UPDATE ICONS??? TODO
+/mob/living/carbon/human/update_inv_pockets()
-	if( istype(wear_suit, /obj/item/clothing/suit/straight_jacket) )
+	crash_with("Someone called update_inv_pockets even though it's dumb")
-		drop_from_inventory(handcuffed)
-		drop_l_hand()
-		drop_r_hand()
 
-/mob/living/carbon/human/update_inv_pockets(var/update_icons=1)
+/mob/living/carbon/human/update_inv_wear_mask()
-	if(QDESTROYING(src))
-		return
-
-	//Wow, this can probably go away, huh.
-	if(l_store)			l_store.screen_loc = ui_storage1	//TODO
-	if(r_store)			r_store.screen_loc = ui_storage2	//TODO
-	if(update_icons)	update_icons_layers()
-
-/mob/living/carbon/human/update_inv_wear_mask(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
@@ -867,12 +684,11 @@ var/global/list/damage_icon_parts = list()
 	if(!wear_mask || (head && head.flags_inv & HIDEMASK))
 		return //Why bother, nothing in mask slot.
 	
-	wear_mask.screen_loc = ui_mask	//TODO
-	
 	overlays_standing[FACEMASK_LAYER] = wear_mask.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_wear_mask_str, default_icon = INV_MASK_DEF_ICON, default_layer = FACEMASK_LAYER)
+	
 	apply_layer(FACEMASK_LAYER)
 
-/mob/living/carbon/human/update_inv_back(var/update_icons=1)
+/mob/living/carbon/human/update_inv_back()
 	if(QDESTROYING(src))
 		return
 
@@ -881,9 +697,8 @@ var/global/list/damage_icon_parts = list()
 	if(!back)
 		return //Why do anything
 
-	back.screen_loc = ui_back	//TODO
-
 	overlays_standing[BACK_LAYER] = back.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_back_str, default_icon = INV_BACK_DEF_ICON, default_layer = BACK_LAYER)
+	
 	apply_layer(BACK_LAYER)
 
 //TODO: Carbon procs in my human update_icons??
@@ -902,7 +717,7 @@ var/global/list/damage_icon_parts = list()
 		hud_used.l_hand_hud_object.update_icon()
 		hud_used.r_hand_hud_object.update_icon()
 
-/mob/living/carbon/human/update_inv_handcuffed(var/update_icons=1)
+/mob/living/carbon/human/update_inv_handcuffed()
 	if(QDESTROYING(src))
 		return
 
@@ -912,14 +727,11 @@ var/global/list/damage_icon_parts = list()
 	if(!handcuffed)
 		return //Not cuffed, why bother
 
-	drop_r_hand()
-	drop_l_hand()
-	stop_pulling()	//TODO: should be handled elsewhere
-
 	overlays_standing[HANDCUFF_LAYER] = handcuffed.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_handcuffed_str, default_icon = INV_HCUFF_DEF_ICON, default_layer = HANDCUFF_LAYER)
+	
 	apply_layer(HANDCUFF_LAYER)
 
-/mob/living/carbon/human/update_inv_legcuffed(var/update_icons=1)
+/mob/living/carbon/human/update_inv_legcuffed()
 	if(QDESTROYING(src))
 		return
 
@@ -929,15 +741,10 @@ var/global/list/damage_icon_parts = list()
 		return //Not legcuffed, why bother.
 
 	overlays_standing[LEGCUFF_LAYER] = handcuffed.make_worn_icon(body_type = species.get_bodytype(), slot_name = slot_legcuffed_str, default_icon = INV_LCUFF_DEF_ICON, default_layer = LEGCUFF_LAYER)
+	
 	apply_layer(LEGCUFF_LAYER)
 
-	//TODO: Not in my update_icons
+/mob/living/carbon/human/update_inv_r_hand()
-	if(m_intent != "walk")
-		m_intent = "walk"
-		if(hud_used && src.hud_used.move_intent)
-			hud_used.move_intent.icon_state = "walking"
-
-/mob/living/carbon/human/update_inv_r_hand(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
@@ -946,15 +753,11 @@ var/global/list/damage_icon_parts = list()
 	if(!r_hand)
 		return //No hand, no bother.
 
-	r_hand.screen_loc = ui_rhand	//TODO
-
 	overlays_standing[R_HAND_LAYER] = r_hand.make_worn_icon(body_type = species.get_bodytype(), inhands = TRUE, slot_name = slot_r_hand_str, default_icon = INV_R_HAND_DEF_ICON, default_layer = R_HAND_LAYER)
+	
 	apply_layer(R_HAND_LAYER)
 
-	if(handcuffed)
+/mob/living/carbon/human/update_inv_l_hand()
-		drop_r_hand() //TODO: EXCUSE ME
-
-/mob/living/carbon/human/update_inv_l_hand(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
@@ -963,15 +766,11 @@ var/global/list/damage_icon_parts = list()
 	if(!l_hand)
 		return //No hand, no bother.
 
-	l_hand.screen_loc = ui_lhand	//TODO
-
 	overlays_standing[L_HAND_LAYER] = l_hand.make_worn_icon(body_type = species.get_bodytype(), inhands = TRUE, slot_name = slot_l_hand_str, default_icon = INV_L_HAND_DEF_ICON, default_layer = L_HAND_LAYER)
+
 	apply_layer(L_HAND_LAYER)
 
-	if(handcuffed)
+/mob/living/carbon/human/proc/update_tail_showing()
-		drop_l_hand() //TODO: AAAAAAAAAAa
-
-/mob/living/carbon/human/proc/update_tail_showing(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
@@ -983,7 +782,7 @@ var/global/list/damage_icon_parts = list()
 	if(species_tail && !(wear_suit && wear_suit.flags_inv & HIDETAIL))
 		var/icon/tail_s = get_tail_icon()
 		overlays_standing[TAIL_LAYER] = image(tail_s, icon_state = "[species_tail]_s")
-		animate_tail_reset(0)
+		animate_tail_reset()
 
 	apply_layer(TAIL_LAYER)
 
@@ -1009,16 +808,17 @@ var/global/list/damage_icon_parts = list()
 
 /mob/living/carbon/human/proc/set_tail_state(var/t_state)
 	var/image/tail_overlay = overlays_standing[TAIL_LAYER]
-
+	remove_layer(TAIL_LAYER)
 	if(tail_overlay && species.get_tail_animation(src))
 		tail_overlay.icon_state = t_state
+		apply_layer(TAIL_LAYER)
 		return tail_overlay
 	return null
 
 //Not really once, since BYOND can't do that.
 //Update this if the ability to flick() images or make looping animation start at the first frame is ever added.
 //You can sort of flick images now with flick_overlay -Aro
-/mob/living/carbon/human/proc/animate_tail_once(var/update_icons=1)
+/mob/living/carbon/human/proc/animate_tail_once()
 	if(QDESTROYING(src))
 		return
 
@@ -1027,7 +827,7 @@ var/global/list/damage_icon_parts = list()
 	var/image/tail_overlay = overlays_standing[TAIL_LAYER]
 	if(tail_overlay && tail_overlay.icon_state == t_state)
 		return //let the existing animation finish
-
+	remove_layer(TAIL_LAYER)
 	tail_overlay = set_tail_state(t_state)
 	if(tail_overlay)
 		spawn(20)
@@ -1035,25 +835,21 @@ var/global/list/damage_icon_parts = list()
 			if(overlays_standing[TAIL_LAYER] == tail_overlay && tail_overlay.icon_state == t_state)
 				animate_tail_stop()
 	
-	if(update_icons) update_icons_layers()
+	apply_layer(TAIL_LAYER)
 
-/mob/living/carbon/human/proc/animate_tail_start(var/update_icons=1)
+/mob/living/carbon/human/proc/animate_tail_start()
 	if(QDESTROYING(src))
 		return
 
 	set_tail_state("[species.get_tail(src)]_slow[rand(0,9)]")
 
-	if(update_icons) update_icons_layers()
+/mob/living/carbon/human/proc/animate_tail_fast()
-
-/mob/living/carbon/human/proc/animate_tail_fast(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
 	set_tail_state("[species.get_tail(src)]_loop[rand(0,9)]")
 
-	if(update_icons) update_icons_layers()
+/mob/living/carbon/human/proc/animate_tail_reset()
-
-/mob/living/carbon/human/proc/animate_tail_reset(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
@@ -1062,17 +858,13 @@ var/global/list/damage_icon_parts = list()
 	else
 		set_tail_state("[species.get_tail(src)]_static")
 
-	if(update_icons) update_icons_layers()
+/mob/living/carbon/human/proc/animate_tail_stop()
-
-/mob/living/carbon/human/proc/animate_tail_stop(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
 	set_tail_state("[species.get_tail(src)]_static")
 
-	if(update_icons) update_icons_layers()
+/mob/living/carbon/human/update_modifier_visuals()
-
-/mob/living/carbon/human/update_modifier_visuals(var/update_icons=1)
 	if(QDESTROYING(src))
 		return
 
@@ -1088,9 +880,10 @@ var/global/list/damage_icon_parts = list()
 			effects.overlays += I //TODO, this compositing is annoying.
 
 	overlays_standing[MODIFIER_EFFECTS_LAYER] = effects
+	
 	apply_layer(MODIFIER_EFFECTS_LAYER)
 
-/mob/living/carbon/human/update_fire(var/update_icons=1)
+/mob/living/carbon/human/update_fire()
 	if(QDESTROYING(src))
 		return
 
@@ -1099,10 +892,11 @@ var/global/list/damage_icon_parts = list()
 	if(!on_fire)
 		return
 	
-	overlays_standing[FIRE_LAYER] = image(icon = 'icons/mob/OnFire.dmi', icon_state = get_fire_icon_state())
+	overlays_standing[FIRE_LAYER] = image(icon = 'icons/mob/OnFire.dmi', icon_state = get_fire_icon_state(), layer = BODY_LAYER+FIRE_LAYER)
+	
 	apply_layer(FIRE_LAYER)
 
-/mob/living/carbon/human/update_water(var/update_icons=1)
+/mob/living/carbon/human/update_water()
 	if(QDESTROYING(src))
 		return
 
@@ -1112,30 +906,31 @@ var/global/list/damage_icon_parts = list()
 	if(!depth || lying)
 		return
 
-	overlays_standing[WATER_LAYER] = image(icon = 'icons/mob/submerged.dmi', icon_state = "human_swimming_[depth]") //TODO: Improve
+	overlays_standing[WATER_LAYER] = image(icon = 'icons/mob/submerged.dmi', icon_state = "human_swimming_[depth]", layer = BODY_LAYER+WATER_LAYER) //TODO: Improve
+	
 	apply_layer(WATER_LAYER)
 
-/mob/living/carbon/human/proc/update_surgery(var/update_icons=1)
+/mob/living/carbon/human/proc/update_surgery()
 	if(QDESTROYING(src))
 		return
 
-	remove_layer(SURGERY_LEVEL)
+	remove_layer(SURGERY_LAYER)
 
 	var/image/total = new
 	for(var/obj/item/organ/external/E in organs)
 		if(E.open)
-			var/image/I = image(icon = 'icons/mob/surgery.dmi',  icon_state = "[E.icon_name][round(E.open)]", layer = -SURGERY_LEVEL)
+			var/image/I = image(icon = 'icons/mob/surgery.dmi',  icon_state = "[E.icon_name][round(E.open)]", layer = BODY_LAYER+SURGERY_LAYER)
 			total.overlays += I //TODO: This compositing is annoying
 
 	if(total.overlays.len)
-		overlays_standing[SURGERY_LEVEL] = total
+		overlays_standing[SURGERY_LAYER] = total
-		apply_layer(SURGERY_LEVEL)
+		apply_layer(SURGERY_LAYER)
 
 //Human Overlays Indexes/////////
 #undef MUTATIONS_LAYER
 #undef SKIN_LAYER
 #undef DAMAGE_LAYER
-#undef SURGERY_LEVEL
+#undef SURGERY_LAYER
 #undef UNDERWEAR_LAYER
 #undef SHOES_LAYER_ALT
 #undef UNIFORM_LAYER

code/modules/mob/living/inventory.dm

@@ -72,16 +72,16 @@
 /mob/living/u_equip(obj/W as obj)
 	if (W == r_hand)
 		r_hand = null
-		update_inv_r_hand(0)
+		update_inv_r_hand()
 	else if (W == l_hand)
 		l_hand = null
-		update_inv_l_hand(0)
+		update_inv_l_hand()
 	else if (W == back)
 		back = null
-		update_inv_back(0)
+		update_inv_back()
 	else if (W == wear_mask)
 		wear_mask = null
-		update_inv_wear_mask(0)
+		update_inv_wear_mask()
 	return
 
 /mob/living/get_equipped_item(var/slot)

code/modules/mob/living/living.dm

@@ -1,6 +1,13 @@
 /mob/living/New()
 	..()
 
+	//Prime this list if we need it.
+	if(has_huds)
+		add_overlay(backplane,TRUE) //Strap this on here, to block HUDs from appearing in rightclick menus: http://www.byond.com/forum/?post=2336679
+		hud_list = list()
+		hud_list.len = TOTAL_HUDS
+		make_hud_overlays()
+
 	//I'll just hang my coat up over here
 	dsoverlay = image('icons/mob/darksight.dmi',global_hud.darksight) //This is a secret overlay! Go look at the file, you'll see.
 	var/mutable_appearance/dsma = new(dsoverlay) //Changing like ten things, might as well.
@@ -855,6 +862,7 @@ default behaviour is:
 
 	resting = !resting
 	to_chat(src, "<span class='notice'>You are now [resting ? "resting" : "getting up"]</span>")
+	update_canmove()
 
 /mob/living/proc/cannot_use_vents()
 	if(mob_size > MOB_SMALL)
@@ -1003,6 +1011,7 @@ default behaviour is:
 			break
 
 	if(lying != lying_prev)
+		lying_prev = lying
 		update_transform()
 		
 	return canmove
@@ -1157,3 +1166,22 @@ default behaviour is:
 
 
 	item.throw_at(target, throw_range, item.throw_speed, src)
+
+//Add an entry to overlays, assuming it exists
+/mob/living/proc/apply_hud(cache_index, var/image/I)
+	hud_list[cache_index] = I
+	if((. = hud_list[cache_index]))
+		//underlays += .
+		add_overlay(.)
+
+//Remove an entry from overlays, and from the list
+/mob/living/proc/grab_hud(cache_index)
+	var/I = hud_list[cache_index]
+	if(I)
+		//underlays -= I
+		cut_overlay(I)
+		hud_list[cache_index] = null
+		return I
+
+/mob/living/proc/make_hud_overlays()
+	return

code/modules/mob/living/living_defines.dm

@@ -54,3 +54,6 @@
 	var/glow_range = 2
 	var/glow_intensity = null
 	var/glow_color = "#FFFFFF"			// The color they're glowing!
+
+	var/list/hud_list		//Holder for health hud, status hud, wanted hud, etc (not like inventory slots)
+	var/has_huds = FALSE	//Whether or not we should bother initializing the above list

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

@@ -7,7 +7,7 @@
 	var/list/stating_laws = list()// Channels laws are currently being stated on
 	var/obj/item/device/radio/common_radio
 
-	var/list/hud_list[10]
+	has_huds = TRUE
 	var/list/speech_synthesizer_langs = list()	//which languages can be vocalized by the speech synthesizer
 
 	//Used in say.dm.

code/modules/mob/living/simple_animal/simple_hud.dm

@@ -12,6 +12,7 @@
 	var/list/adding = list()
 	var/list/other = list()
 	var/list/hotkeybuttons = list()
+	var/list/slot_info = list()
 
 	hud.adding = adding
 	hud.other = other
@@ -34,6 +35,7 @@
 			inv_box.screen_loc =  slot_data["loc"]
 			inv_box.slot_id =     slot_data["slot"]
 			inv_box.icon_state =  slot_data["state"]
+			slot_info["[inv_box.slot_id]"] = inv_box.screen_loc
 
 			if(slot_data["dir"])
 				inv_box.set_dir(slot_data["dir"])
@@ -249,9 +251,9 @@
 		inv_box.slot_id = slot_r_hand
 		inv_box.color = ui_color
 		inv_box.alpha = ui_alpha
-
 		hud.r_hand_hud_object = inv_box
 		hud.adding += inv_box
+		slot_info["[slot_r_hand]"] = inv_box.screen_loc
 
 		inv_box = new /obj/screen/inventory/hand()
 		inv_box.hud = src
@@ -266,6 +268,7 @@
 		inv_box.alpha = ui_alpha
 		hud.l_hand_hud_object = inv_box
 		hud.adding += inv_box
+		slot_info["[slot_l_hand]"] = inv_box.screen_loc
 
 		//Swaphand titlebar
 		using = new /obj/screen/inventory()

code/modules/mob/mob.dm

@@ -858,14 +858,17 @@
 /mob/proc/Resting(amount)
 	facing_dir = null
 	resting = max(max(resting,amount),0)
+	update_canmove()
 	return
 
 /mob/proc/SetResting(amount)
 	resting = max(amount,0)
+	update_canmove()
 	return
 
 /mob/proc/AdjustResting(amount)
 	resting = max(resting + amount,0)
+	update_canmove()
 	return
 
 /mob/proc/AdjustLosebreath(amount)

code/modules/mob/mob_helpers.dm

@@ -624,7 +624,28 @@ var/global/image/backplane
 	backplane = image('icons/misc/win32.dmi')
 	backplane.alpha = 0
 	backplane.plane = -100
-	backplane.layer = BACKPLANE_LAYER
+	backplane.layer = MOB_LAYER-0.01
 	backplane.mouse_opacity = 0
 
 	return TRUE
+
+/mob/proc/position_hud_item(var/obj/item/item, var/slot)
+	if(!istype(hud_used) || !slot || !LAZYLEN(hud_used.slot_info))
+		return
+
+	//They may have hidden their entire hud but the hands
+	if(!hud_used.hud_shown && slot > slot_r_hand)
+		item.screen_loc = null
+		return
+
+	//They may have hidden the icons in the bottom left with the hide button
+	if(!hud_used.inventory_shown && slot > slot_r_store)
+		item.screen_loc = null
+		return
+		
+	var/screen_place = hud_used.slot_info["[slot]"]
+	if(!screen_place)
+		item.screen_loc = null
+		return
+
+	item.screen_loc = screen_place

code/modules/mob/new_player/preferences_setup.dm

@@ -247,8 +247,6 @@
 		mannequin.job = previewJob.title
 		previewJob.equip_preview(mannequin, player_alt_titles[previewJob.title])
 
-	mannequin.regenerate_icons()
-
 /datum/preferences/proc/update_preview_icon()
 	var/mob/living/carbon/human/dummy/mannequin/mannequin = get_mannequin(client_ckey)
 	mannequin.delete_inventory(TRUE)

code/modules/mob/update_icons.dm

@@ -1,31 +1,26 @@
 //Most of these are defined at this level to reduce on checks elsewhere in the code.
 //Having them here also makes for a nice reference list of the various overlay-updating procs available
 
-/mob/proc/regenerate_icons()		//TODO: phase this out completely if possible
+/mob/proc/regenerate_icons()		//Update every aspect of the mob's icons (expensive, resist the urge to use unless you need it)
 	return
 
 /mob/proc/update_icons()
 	update_icon() //Ugh.
 	return
 
-/mob/proc/update_icons_layers(var/update_icons = TRUE)
+// Obsolete
-	if(update_icons)
+/mob/proc/update_icons_layers()
-		update_icons()
+	return
 
-/mob/proc/update_icons_huds(var/update_icons = TRUE)
+/mob/proc/update_icons_huds()
-	if(update_icons)
+	return
-		update_icons()
 
-/mob/proc/update_icons_body(var/update_icons = TRUE)
+/mob/proc/update_icons_body()
-	if(update_icons)
+	return
-		update_icons()
 
 /mob/proc/update_icons_all()
-	update_icons_huds(FALSE)
+	return
-	update_icons_body(FALSE)
+// End obsolete
-	update_icons_layers(FALSE)
-
-	update_icons()
 
 /mob/proc/update_hud()
 	return

code/modules/organs/organ_external.dm

@@ -873,7 +873,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	spawn(1)
 		victim.updatehealth()
 		victim.UpdateDamageIcon()
-		victim.regenerate_icons()
+		victim.update_icons_body()
 		dir = 2
 
 	switch(disintegrate)

code/modules/paperwork/paper.dm

@@ -499,13 +499,13 @@
 				B.loc = h_user
 				B.hud_layerise()
 				h_user.l_store = B
-				h_user.update_inv_pockets()
+				//h_user.update_inv_pockets() //Doesn't do anything
 			else if (h_user.r_store == src)
 				h_user.drop_from_inventory(src)
 				B.loc = h_user
 				B.hud_layerise()
 				h_user.r_store = B
-				h_user.update_inv_pockets()
+				//h_user.update_inv_pockets() //Doesn't do anything
 			else if (h_user.head == src)
 				h_user.u_equip(src)
 				h_user.put_in_hands(B)