You can't (un)equip garments on/from obscured inventory slots anymore.

code/_onclick/hud/screen_objects.dm

@@ -153,7 +153,7 @@
 	var/image/item_overlay = image(holding)
 	item_overlay.alpha = 92
 
-	if(!user.can_equip(holding, slot_id, TRUE))
+	if(!user.can_equip(holding, slot_id, TRUE, TRUE, TRUE))
 		item_overlay.color = "#FF0000"
 	else
 		item_overlay.color = "#00ff00"

code/game/objects/items.dm

@@ -496,11 +496,11 @@ GLOBAL_VAR_INIT(embedpocalypse, FALSE) // if true, all items will be able to emb
 //if this is being done by a mob other than M, it will include the mob equipper, who is trying to equip the item to mob M. equipper will be null otherwise.
 //If you are making custom procs but would like to retain partial or complete functionality of this one, include a 'return ..()' to where you want this to happen.
 //Set disable_warning to TRUE if you wish it to not give you outputs.
-/obj/item/proc/mob_can_equip(mob/living/M, mob/living/equipper, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE)
+/obj/item/proc/mob_can_equip(mob/living/M, mob/living/equipper, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
 	if(!M)
 		return FALSE
 
-	return M.can_equip(src, slot, disable_warning, bypass_equip_delay_self)
+	return M.can_equip(src, slot, disable_warning, bypass_equip_delay_self, clothing_check, return_warning)
 
 /obj/item/verb/verb_pickup()
 	set src in oview(1)

code/modules/mob/inventory.dm

@@ -158,7 +158,7 @@
 
 //Returns if a certain item can be equipped to a certain slot.
 // Currently invalid for two-handed items - call obj/item/mob_can_equip() instead.
-/mob/proc/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE)
+/mob/proc/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
 	return FALSE
 
 /mob/proc/can_put_in_hand(I, hand_index)
@@ -338,50 +338,63 @@
 			return FALSE
 	return TRUE
 
+//This is a SAFE proc. Use this instead of equip_to_slot()!
+//set qdel_on_fail to have it delete W if it fails to equip
+//set disable_warning to disable the 'you are unable to equip that' warning.
+//unset redraw_mob to prevent the mob from being redrawn at the end.
+/mob/proc/equip_to_slot_if_possible(obj/item/W, slot, qdel_on_fail = FALSE, disable_warning = FALSE, redraw_mob = TRUE, bypass_equip_delay_self = FALSE, clothing_check = FALSE)
+	if(!istype(W))
+		return FALSE
+	var/list/warning = list("<span class='warning'>You are unable to equip that!</span>")
+	if(!W.mob_can_equip(src, null, slot, disable_warning, bypass_equip_delay_self, clothing_check, warning))
+		if(qdel_on_fail)
+			qdel(W)
+		else if(!disable_warning)
+			to_chat(src, warning[1])
+		return FALSE
+	equip_to_slot(W, slot, redraw_mob) //This proc should not ever fail.
+	return TRUE
+
+//This is an UNSAFE proc. It merely handles the actual job of equipping. All the checks on whether you can or can't equip need to be done before! Use mob_can_equip() for that task.
+//In most cases you will want to use equip_to_slot_if_possible()
+/mob/proc/equip_to_slot(obj/item/W, slot)
+	return
+
+//This is just a commonly used configuration for the equip_to_slot_if_possible() proc, used to equip people when the round starts and when events happen and such.
+//Also bypasses equip delay checks, since the mob isn't actually putting it on.
+/mob/proc/equip_to_slot_or_del(obj/item/W, slot)
+	return equip_to_slot_if_possible(W, slot, TRUE, TRUE, FALSE, TRUE)
+
+//puts the item "W" into an appropriate slot in a human's inventory
+//returns 0 if it cannot, 1 if successful
+/mob/proc/equip_to_appropriate_slot(obj/item/W, clothing_check = FALSE)
+	if(!istype(W))
+		return 0
+	var/slot_priority = W.slot_equipment_priority
+
+	if(!slot_priority)
+		slot_priority = list( \
+			SLOT_BACK, SLOT_WEAR_ID,\
+			SLOT_W_UNIFORM, SLOT_WEAR_SUIT,\
+			SLOT_WEAR_MASK, SLOT_HEAD, SLOT_NECK,\
+			SLOT_SHOES, SLOT_GLOVES,\
+			SLOT_EARS, SLOT_GLASSES,\
+			SLOT_BELT, SLOT_S_STORE,\
+			SLOT_L_STORE, SLOT_R_STORE,\
+			SLOT_GENERC_DEXTROUS_STORAGE\
+		)
+
+	for(var/slot in slot_priority)
+		if(equip_to_slot_if_possible(W, slot, FALSE, TRUE, TRUE, FALSE, clothing_check)) //qdel_on_fail = 0; disable_warning = 1; redraw_mob = 1
+			return 1
+
+	return 0
+
 //Outdated but still in use apparently. This should at least be a human proc.
 //Daily reminder to murder this - Remie.
 /mob/living/proc/get_equipped_items(include_pockets = FALSE)
 	return
 
-/mob/living/carbon/get_equipped_items(include_pockets = FALSE)
-	var/list/items = list()
-	if(back)
-		items += back
-	if(head)
-		items += head
-	if(wear_mask)
-		items += wear_mask
-	if(wear_neck)
-		items += wear_neck
-	return items
-
-/mob/living/carbon/human/get_equipped_items(include_pockets = FALSE)
-	var/list/items = ..()
-	if(belt)
-		items += belt
-	if(ears)
-		items += ears
-	if(glasses)
-		items += glasses
-	if(gloves)
-		items += gloves
-	if(shoes)
-		items += shoes
-	if(wear_id)
-		items += wear_id
-	if(wear_suit)
-		items += wear_suit
-	if(w_uniform)
-		items += w_uniform
-	if(include_pockets)
-		if(l_store)
-			items += l_store
-		if(r_store)
-			items += r_store
-		if(s_store)
-			items += s_store
-	return items
-
 /mob/living/proc/unequip_everything()
 	var/list/items = list()
 	items |= get_equipped_items(TRUE)
@@ -394,7 +407,7 @@
 		to_chat(M, "<span class='warning'>You are not holding anything to equip!</span>")
 		return FALSE
 
-	if(M.equip_to_appropriate_slot(src))
+	if(M.equip_to_appropriate_slot(src, TRUE))
 		M.update_inv_hands()
 		return TRUE
 	else

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

@@ -1160,3 +1160,16 @@
 			dna.features["body_model"] = MALE
 	if(update_icon)
 		update_body()
+
+/mob/living/carbon/check_obscured_slots()
+	if(head)
+		if(head.flags_inv & HIDEMASK)
+			LAZYOR(., SLOT_WEAR_MASK)
+		if(head.flags_inv & HIDEEYES)
+			LAZYOR(., SLOT_GLASSES)
+		if(head.flags_inv & HIDEEARS)
+			LAZYOR(., SLOT_EARS)
+
+	if(wear_mask)
+		if(wear_mask.flags_inv & HIDEEYES)
+			LAZYOR(., SLOT_GLASSES)

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

@@ -511,33 +511,15 @@
 		// Might need re-wording.
 		to_chat(user, "<span class='alert'>There is no exposed flesh or thin material [above_neck(target_zone) ? "on [p_their()] head" : "on [p_their()] body"].</span>")
 
-/mob/living/carbon/human/proc/check_obscured_slots()
+/mob/living/carbon/human/check_obscured_slots()
-	var/list/obscured = list()
+	. = ..()
-
 	if(wear_suit)
 		if(wear_suit.flags_inv & HIDEGLOVES)
-			obscured |= SLOT_GLOVES
+			LAZYOR(., SLOT_GLOVES)
 		if(wear_suit.flags_inv & HIDEJUMPSUIT)
-			obscured |= SLOT_W_UNIFORM
+			LAZYOR(., SLOT_W_UNIFORM)
 		if(wear_suit.flags_inv & HIDESHOES)
-			obscured |= SLOT_SHOES
+			LAZYOR(., SLOT_SHOES)
-
-	if(head)
-		if(head.flags_inv & HIDEMASK)
-			obscured |= SLOT_WEAR_MASK
-		if(head.flags_inv & HIDEEYES)
-			obscured |= SLOT_GLASSES
-		if(head.flags_inv & HIDEEARS)
-			obscured |= SLOT_EARS
-
-	if(wear_mask)
-		if(wear_mask.flags_inv & HIDEEYES)
-			obscured |= SLOT_GLASSES
-
-	if(obscured.len)
-		return obscured
-	else
-		return null
 
 /mob/living/carbon/human/assess_threat(judgement_criteria, lasercolor = "", datum/callback/weaponcheck=null)
 	if(judgement_criteria & JUDGE_EMAGGED)

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

@@ -1,5 +1,32 @@
-/mob/living/carbon/human/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE)
+/mob/living/carbon/human/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
-	return dna.species.can_equip(I, slot, disable_warning, src, bypass_equip_delay_self)
+	return dna.species.can_equip(I, slot, disable_warning, src, bypass_equip_delay_self, clothing_check, return_warning)
+
+/mob/living/carbon/human/get_equipped_items(include_pockets = FALSE)
+	var/list/items = ..()
+	if(belt)
+		items += belt
+	if(ears)
+		items += ears
+	if(glasses)
+		items += glasses
+	if(gloves)
+		items += gloves
+	if(shoes)
+		items += shoes
+	if(wear_id)
+		items += wear_id
+	if(wear_suit)
+		items += wear_suit
+	if(w_uniform)
+		items += w_uniform
+	if(include_pockets)
+		if(l_store)
+			items += l_store
+		if(r_store)
+			items += r_store
+		if(s_store)
+			items += s_store
+	return items
 
 // Return the item currently in the slot ID
 /mob/living/carbon/human/get_item_by_slot(slot_id)

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

@@ -1065,11 +1065,16 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 	// handles the equipping of species-specific gear
 	return
 
-/datum/species/proc/can_equip(obj/item/I, slot, disable_warning, mob/living/carbon/human/H, bypass_equip_delay_self = FALSE)
+/datum/species/proc/can_equip(obj/item/I, slot, disable_warning, mob/living/carbon/human/H, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
 	if(slot in no_equip)
 		if(!I.species_exception || !is_type_in_list(src, I.species_exception))
 			return FALSE
 
+	if(clothing_check && (slot in H.check_obscured_slots()))
+		if(return_warning)
+			return_warning[1] = "<span class='warning'>You are unable to equip with your current garments in the way!</span>"
+		return FALSE
+
 	var/num_arms = H.get_num_arms(FALSE)
 	var/num_legs = H.get_num_legs(FALSE)
 
@@ -1131,8 +1136,8 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 			if(!CHECK_BITFIELD(I.item_flags, NO_UNIFORM_REQUIRED))
 				var/obj/item/bodypart/O = H.get_bodypart(BODY_ZONE_CHEST)
 				if(!H.w_uniform && !nojumpsuit && (!O || O.status != BODYPART_ROBOTIC))
-					if(!disable_warning)
+					if(return_warning)
-						to_chat(H, "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>")
+						return_warning[1] = "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>"
 					return FALSE
 			if(!(I.slot_flags & ITEM_SLOT_BELT))
 				return
@@ -1173,8 +1178,8 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 			if(!CHECK_BITFIELD(I.item_flags, NO_UNIFORM_REQUIRED))
 				var/obj/item/bodypart/O = H.get_bodypart(BODY_ZONE_CHEST)
 				if(!H.w_uniform && !nojumpsuit && (!O || O.status != BODYPART_ROBOTIC))
-					if(!disable_warning)
+					if(return_warning)
-						to_chat(H, "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>")
+						return_warning[1] = "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>"
 					return FALSE
 			if( !(I.slot_flags & ITEM_SLOT_ID) )
 				return FALSE
@@ -1188,8 +1193,8 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 			var/obj/item/bodypart/O = H.get_bodypart(BODY_ZONE_L_LEG)
 
 			if(!H.w_uniform && !nojumpsuit && (!O || O.status != BODYPART_ROBOTIC))
-				if(!disable_warning)
+				if(return_warning)
-					to_chat(H, "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>")
+					return_warning[1] = "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>"
 				return FALSE
 			if(I.slot_flags & ITEM_SLOT_DENYPOCKET)
 				return FALSE
@@ -1204,8 +1209,8 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 			var/obj/item/bodypart/O = H.get_bodypart(BODY_ZONE_R_LEG)
 
 			if(!H.w_uniform && !nojumpsuit && (!O || O.status != BODYPART_ROBOTIC))
-				if(!disable_warning)
+				if(return_warning)
-					to_chat(H, "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>")
+					return_warning[1] = "<span class='warning'>You need a jumpsuit before you can attach this [I.name]!</span>"
 				return FALSE
 			if(I.slot_flags & ITEM_SLOT_DENYPOCKET)
 				return FALSE
@@ -1218,16 +1223,16 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 			if(H.s_store)
 				return FALSE
 			if(!H.wear_suit)
-				if(!disable_warning)
+				if(return_warning)
-					to_chat(H, "<span class='warning'>You need a suit before you can attach this [I.name]!</span>")
+					return_warning[1] = "<span class='warning'>You need a suit before you can attach this [I.name]!</span>"
 				return FALSE
 			if(!H.wear_suit.allowed)
-				if(!disable_warning)
+				if(return_warning)
-					to_chat(H, "You somehow have a suit with no defined allowed items for suit storage, stop that.")
+					return_warning[1] = "You somehow have a suit with no defined allowed items for suit storage, stop that."
 				return FALSE
 			if(I.w_class > WEIGHT_CLASS_BULKY)
-				if(!disable_warning)
+				if(return_warning)
-					to_chat(H, "The [I.name] is too big to attach.") //should be src?
+					return_warning[1] = "The [I.name] is too big to attach."
 				return FALSE
 			if( istype(I, /obj/item/pda) || istype(I, /obj/item/pen) || is_type_in_list(I, H.wear_suit.allowed) )
 				return TRUE

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

@@ -117,6 +117,18 @@
 		if(!QDELETED(src))
 			update_inv_legcuffed()
 
+/mob/living/carbon/get_equipped_items(include_pockets = FALSE)
+	var/list/items = list()
+	if(back)
+		items += back
+	if(head)
+		items += head
+	if(wear_mask)
+		items += wear_mask
+	if(wear_neck)
+		items += wear_neck
+	return items
+
 //handle stuff to update when a mob equips/unequips a mask.
 /mob/living/proc/wear_mask_update(obj/item/clothing/C, toggle_off = 1)
 	update_inv_wear_mask()

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

@@ -81,7 +81,7 @@
 /mob/living/carbon/monkey/proc/pickup_and_wear(obj/item/I)
 	if(QDELETED(I) || I.loc != src)
 		return
-	equip_to_appropriate_slot(I)
+	equip_to_appropriate_slot(I, TRUE)
 
 /mob/living/carbon/monkey/resist_restraints()
 	var/obj/item/I = null

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

@@ -1,4 +1,9 @@
-/mob/living/carbon/monkey/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE)
+/mob/living/carbon/monkey/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
+	if(clothing_check && (slot in check_obscured_slots()))
+		if(return_warning)
+			return_warning[1] = "<span class='warning'>You are unable to equip with your current garments in the way!</span>"
+		return FALSE
+
 	switch(slot)
 		if(SLOT_HANDS)
 			if(get_empty_held_indexes())

code/modules/mob/living/simple_animal/friendly/drone/inventory.dm

@@ -19,7 +19,7 @@
 	return 0
 
 
-/mob/living/simple_animal/drone/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE)
+/mob/living/simple_animal/drone/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
 	switch(slot)
 		if(SLOT_HEAD)
 			if(head)

code/modules/mob/living/simple_animal/guardian/types/dextrous.dm

@@ -50,7 +50,7 @@
 		return 1
 	return 0
 
-/mob/living/simple_animal/hostile/guardian/dextrous/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE)
+/mob/living/simple_animal/hostile/guardian/dextrous/can_equip(obj/item/I, slot, disable_warning = FALSE, bypass_equip_delay_self = FALSE, clothing_check = FALSE, list/return_warning)
 	switch(slot)
 		if(SLOT_GENERC_DEXTROUS_STORAGE)
 			if(internal_storage)

code/modules/mob/mob.dm

@@ -227,69 +227,24 @@ mob/visible_message(message, self_message, blind_message, vision_distance = DEFA
 	var/obj/item/W = get_active_held_item()
 
 	if(istype(W))
-		if(equip_to_slot_if_possible(W, slot,0,0,0))
+		if(equip_to_slot_if_possible(W, slot, FALSE, FALSE, FALSE, TRUE))
-			return 1
+			return TRUE
 
 	if(!W)
 		// Activate the item
 		var/obj/item/I = get_item_by_slot(slot)
 		if(istype(I))
+			if(slot in check_obscured_slots())
+				to_chat(src, "<span class='warning'>You are unable to unequip while wearing other garments over it!</span>")
+				return FALSE
 			I.attack_hand(src)
 
-	return 0
+	return FALSE
 
-//This is a SAFE proc. Use this instead of equip_to_slot()!
+/// Checks for slots that are currently obscured by other garments.
-//set qdel_on_fail to have it delete W if it fails to equip
+/mob/proc/check_obscured_slots()
-//set disable_warning to disable the 'you are unable to equip that' warning.
-//unset redraw_mob to prevent the mob from being redrawn at the end.
-/mob/proc/equip_to_slot_if_possible(obj/item/W, slot, qdel_on_fail = FALSE, disable_warning = FALSE, redraw_mob = TRUE, bypass_equip_delay_self = FALSE)
-	if(!istype(W))
-		return FALSE
-	if(!W.mob_can_equip(src, null, slot, disable_warning, bypass_equip_delay_self))
-		if(qdel_on_fail)
-			qdel(W)
-		else
-			if(!disable_warning)
-				to_chat(src, "<span class='warning'>You are unable to equip that!</span>")
-		return FALSE
-	equip_to_slot(W, slot, redraw_mob) //This proc should not ever fail.
-	return TRUE
-
-//This is an UNSAFE proc. It merely handles the actual job of equipping. All the checks on whether you can or can't equip need to be done before! Use mob_can_equip() for that task.
-//In most cases you will want to use equip_to_slot_if_possible()
-/mob/proc/equip_to_slot(obj/item/W, slot)
 	return
 
-//This is just a commonly used configuration for the equip_to_slot_if_possible() proc, used to equip people when the round starts and when events happen and such.
-//Also bypasses equip delay checks, since the mob isn't actually putting it on.
-/mob/proc/equip_to_slot_or_del(obj/item/W, slot)
-	return equip_to_slot_if_possible(W, slot, TRUE, TRUE, FALSE, TRUE)
-
-//puts the item "W" into an appropriate slot in a human's inventory
-//returns 0 if it cannot, 1 if successful
-/mob/proc/equip_to_appropriate_slot(obj/item/W)
-	if(!istype(W))
-		return 0
-	var/slot_priority = W.slot_equipment_priority
-
-	if(!slot_priority)
-		slot_priority = list( \
-			SLOT_BACK, SLOT_WEAR_ID,\
-			SLOT_W_UNIFORM, SLOT_WEAR_SUIT,\
-			SLOT_WEAR_MASK, SLOT_HEAD, SLOT_NECK,\
-			SLOT_SHOES, SLOT_GLOVES,\
-			SLOT_EARS, SLOT_GLASSES,\
-			SLOT_BELT, SLOT_S_STORE,\
-			SLOT_L_STORE, SLOT_R_STORE,\
-			SLOT_GENERC_DEXTROUS_STORAGE\
-		)
-
-	for(var/slot in slot_priority)
-		if(equip_to_slot_if_possible(W, slot, 0, 1, 1)) //qdel_on_fail = 0; disable_warning = 1; redraw_mob = 1
-			return 1
-
-	return 0
-
 // reset_perspective(thing) set the eye to the thing (if it's equal to current default reset to mob perspective)
 // reset_perspective() set eye to common default : mob on turf, loc otherwise
 /mob/proc/reset_perspective(atom/A)