Add ability to swap items in storage (#13648)

* Add ability to swap items in storage

Add ability to swap items in storage through
drag and drop
Fix "the the" message when putting item in storage
Clean code where possible

* Fix swap in stacked storages, clean up code (v3)

* Ignore restraints and lying for swapping items

* Clean up the code a bit, increase readability

* Clean up code, remove spawn(0)

* Fix some spacing issues

* Rename var, use crisp font

code/_onclick/drag_drop.dm

@@ -6,12 +6,13 @@
 	almost anything into a trash can.
 */
 /atom/MouseDrop(atom/over)
-	if(!usr || !over) return
-	if(!Adjacent(usr) || !over.Adjacent(usr)) return // should stop you from dragging through windows
+	if(!usr || !over)
+		return
+	if(!(istype(over, /obj/screen) || (loc && loc == over.loc)))
+		if(!Adjacent(usr) || !over.Adjacent(usr)) // should stop you from dragging through windows
+			return
 
-	spawn(0)
-		over.MouseDrop_T(src,usr)
-	return
+	INVOKE_ASYNC(over, .proc/MouseDrop_T, src, usr)
 
 // recieve a mousedrop
 /atom/proc/MouseDrop_T(atom/dropping, mob/user)

code/_onclick/hud/screen_objects.dm

@@ -120,7 +120,8 @@
 	usr.stop_pulling()
 
 /obj/screen/pull/update_icon(mob/mymob)
-	if(!mymob) return
+	if(!mymob)
+		return
 	if(mymob.pulling)
 		icon_state = "pull"
 	else
@@ -151,16 +152,49 @@
 
 /obj/screen/storage/Click(location, control, params)
 	if(world.time <= usr.next_move)
-		return 1
-	if(usr.stat || usr.paralysis || usr.stunned || usr.IsWeakened())
-		return 1
+		return TRUE
+	if(usr.incapacitated(ignore_restraints = TRUE, ignore_lying = TRUE))
+		return TRUE
 	if(istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
-		return 1
+		return TRUE
 	if(master)
 		var/obj/item/I = usr.get_active_hand()
 		if(I)
 			master.attackby(I, usr, params)
-	return 1
+	return TRUE
+
+/obj/screen/storage/MouseDrop_T(obj/item/I, mob/user)
+	if(!user || !istype(I) || user.incapacitated(ignore_restraints = TRUE, ignore_lying = TRUE) || istype(user.loc, /obj/mecha) || !master)
+		return
+
+	var/obj/item/storage/S = master
+	if(!S)
+		return
+
+	if(I in S.contents) // If the item is already in the storage, move them to the end of the list
+		if(S.contents[S.contents.len] == I) // No point moving them at the end if they're already there!
+			return
+
+		var/list/new_contents = S.contents.Copy()
+		if(S.display_contents_with_number)
+			// Basically move all occurences of I to the end of the list.
+			var/list/obj/item/to_append = list()
+			for(var/obj/item/stored_item in S.contents)
+				if(S.can_items_stack(stored_item, I))
+					new_contents -= stored_item
+					to_append += stored_item
+
+			new_contents.Add(to_append)
+		else
+			new_contents -= I
+			new_contents += I // oof
+		S.contents = new_contents
+
+		if(user.s_active == S)
+			S.orient2hud(user)
+			S.show_to(user)
+	else // If it's not in the storage, try putting it inside
+		S.attackby(I, user)
 
 /obj/screen/zone_sel
 	name = "damage zone"
@@ -271,7 +305,7 @@
 
 	if(choice != selecting)
 		selecting = choice
-		update_icon(usr)
+		update_icon(user)
 	return 1
 
 /obj/screen/zone_sel/update_icon(mob/user)

code/game/objects/items.dm

@@ -310,7 +310,7 @@ GLOBAL_DATUM_INIT(fire_overlay, /image, image("icon" = 'icons/goonstation/effect
 	if(istype(I, /obj/item/storage))
 		var/obj/item/storage/S = I
 		if(S.use_to_pickup)
-			if(S.collection_mode) //Mode is set to collect all items on a tile and we clicked on a valid one.
+			if(S.pickup_all_on_tile) //Mode is set to collect all items on a tile and we clicked on a valid one.
 				if(isturf(loc))
 					var/list/rejections = list()
 					var/success = 0
@@ -644,6 +644,14 @@ GLOBAL_DATUM_INIT(fire_overlay, /image, image("icon" = 'icons/goonstation/effect
 	deltimer(tip_timer) //delete any in-progress timer if the mouse is moved off the item before it finishes
 	closeToolTip(usr)
 
+/obj/item/MouseDrop_T(obj/item/I, mob/user)
+	if(!user || src == I)
+		return
+
+	if(loc && I.loc == loc && istype(loc, /obj/item/storage)) // Are we trying to swap two items in the storage?
+		var/obj/item/storage/S = loc
+		S.swap_items(src, I, user)
+
 // Returns a numeric value for sorting items used as parts in machines, so they can be replaced by the rped
 /obj/item/proc/get_part_rating()
 	return 0

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

@@ -11,7 +11,7 @@
 	use_to_pickup = 1
 	allow_quick_gather = 1
 	allow_quick_empty = 1
-	collection_mode = 1
+	pickup_all_on_tile = TRUE
 	display_contents_with_number = 1
 	max_w_class = WEIGHT_CLASS_NORMAL
 	max_combined_w_class = 100

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

@@ -9,7 +9,7 @@
 	name = "storage"
 	icon = 'icons/obj/storage.dmi'
 	w_class = WEIGHT_CLASS_NORMAL
-	var/silent = 0 // No message on putting items in
+	var/silent = FALSE // No message on putting items in
 	var/list/can_hold = new/list() //List of objects which this item can store (if set, it can't store anything else)
 	var/list/cant_hold = new/list() //List of objects which this item can't store (in effect only if can_hold isn't set)
 	var/empty = FALSE // Will this spawn as an empty box
@@ -22,7 +22,7 @@
 	var/display_contents_with_number	//Set this to make the storage item group contents of the same type and display them as a number.
 	var/allow_quick_empty	//Set this variable to allow the object to have the 'empty' verb, which dumps all the contents on the floor.
 	var/allow_quick_gather	//Set this variable to allow the object to have the 'toggle mode' verb, which quickly collects all items from a tile.
-	var/collection_mode = 1;  //0 = pick one at a time, 1 = pick all on tile
+	var/pickup_all_on_tile = TRUE  //FALSE = pick one at a time, TRUE = pick all on tile
 	var/use_sound = "rustle"	//sound played when used. null for no sound.
 
 	/// What kind of [/obj/item/stack] can this be folded into. (e.g. Boxes and cardboard)
@@ -30,7 +30,7 @@
 	/// How much of the stack item do you get.
 	var/foldable_amt = 0
 
-/obj/item/storage/MouseDrop(obj/over_object as obj)
+/obj/item/storage/MouseDrop(obj/over_object)
 	if(ishuman(usr)) //so monkeys can take off their backpacks -- Urist
 		var/mob/M = usr
 
@@ -63,12 +63,12 @@
 			update_icon() // For content-sensitive icons
 			return
 
-		if(!( istype(over_object, /obj/screen) ))
+		if(!(istype(over_object, /obj/screen)))
 			return ..()
-		if(!(src.loc == usr) || (src.loc && src.loc.loc == usr))
+		if(!(loc == usr) || (loc && loc.loc == usr))
 			return
-		playsound(src.loc, "rustle", 50, 1, -5)
-		if(!( M.restrained() ) && !( M.stat ))
+		playsound(loc, "rustle", 50, TRUE, -5)
+		if(!(M.restrained()) && !(M.stat))
 			switch(over_object.name)
 				if("r_hand")
 					if(!M.unEquip(src))
@@ -78,29 +78,27 @@
 					if(!M.unEquip(src))
 						return
 					M.put_in_l_hand(src)
-			src.add_fingerprint(usr)
+			add_fingerprint(usr)
 			return
 		if(over_object == usr && in_range(src, usr) || usr.contents.Find(src))
 			if(usr.s_active)
 				usr.s_active.close(usr)
-			src.show_to(usr)
+			show_to(usr)
 			return
-	return
 
 /obj/item/storage/AltClick(mob/user)
 	if(ishuman(user) && Adjacent(user) && !user.incapacitated(FALSE, TRUE, TRUE))
 		show_to(user)
-		playsound(loc, "rustle", 50, 1, -5)
+		playsound(loc, "rustle", 50, TRUE, -5)
 		add_fingerprint(user)
 	else if(isobserver(user))
 		show_to(user)
 	return ..()
 
 /obj/item/storage/proc/return_inv()
+	var/list/L = list()
 
-	var/list/L = list(  )
-
-	L += src.contents
+	L += contents
 
 	for(var/obj/item/storage/S in src)
 		L += S.return_inv()
@@ -112,7 +110,7 @@
 		L += F.contents
 	return L
 
-/obj/item/storage/proc/show_to(mob/user as mob)
+/obj/item/storage/proc/show_to(mob/user)
 	if(!user.client)
 		return
 	if(user.s_active != src)
@@ -131,38 +129,36 @@
 	user.s_active = src
 	return
 
-/obj/item/storage/proc/hide_from(mob/user as mob)
-
+/obj/item/storage/proc/hide_from(mob/user)
 	if(!user.client)
 		return
-	user.client.screen -= src.boxes
-	user.client.screen -= src.closer
-	user.client.screen -= src.contents
+
+	user.client.screen -= boxes
+	user.client.screen -= closer
+	user.client.screen -= contents
 	if(user.s_active == src)
 		user.s_active = null
 	return
 
 /obj/item/storage/proc/open(mob/user as mob)
-	if(src.use_sound)
-		playsound(src.loc, src.use_sound, 50, 1, -5)
+	if(use_sound)
+		playsound(loc, use_sound, 50, TRUE, -5)
 
 	if(user.s_active)
 		user.s_active.close(user)
 	show_to(user)
 
-/obj/item/storage/proc/close(mob/user as mob)
-
-	src.hide_from(user)
+/obj/item/storage/proc/close(mob/user)
+	hide_from(user)
 	user.s_active = null
-	return
 
 //This proc draws out the inventory and places the items on it. tx and ty are the upper left tile and mx, my are the bottm right.
 //The numbers are calculated from the bottom-left The bottom-left slot being 1,1.
 /obj/item/storage/proc/orient_objs(tx, ty, mx, my)
 	var/cx = tx
 	var/cy = ty
-	src.boxes.screen_loc = "[tx]:,[ty] to [mx],[my]"
-	for(var/obj/O in src.contents)
+	boxes.screen_loc = "[tx],[ty] to [mx],[my]"
+	for(var/obj/O in contents)
 		O.screen_loc = "[cx],[cy]"
 		O.layer = ABOVE_HUD_LAYER
 		O.plane = ABOVE_HUD_PLANE
@@ -170,24 +166,23 @@
 		if(cx > mx)
 			cx = tx
 			cy--
-	src.closer.screen_loc = "[mx+1],[my]"
-	return
+	closer.screen_loc = "[mx + 1],[my]"
 
 //This proc draws out the inventory and places the items on it. It uses the standard position.
-/obj/item/storage/proc/standard_orient_objs(var/rows, var/cols, var/list/obj/item/display_contents)
+/obj/item/storage/proc/standard_orient_objs(rows, cols, list/datum/numbered_display/display_contents)
 	var/cx = 4
-	var/cy = 2+rows
-	src.boxes.screen_loc = "4:16,2:16 to [4+cols]:16,[2+rows]:16"
+	var/cy = 2 + rows
+	boxes.screen_loc = "4:16,2:16 to [4 + cols]:16,[2 + rows]:16"
 
 	if(display_contents_with_number)
 		for(var/datum/numbered_display/ND in display_contents)
 			ND.sample_object.mouse_opacity = MOUSE_OPACITY_OPAQUE
 			ND.sample_object.screen_loc = "[cx]:16,[cy]:16"
-			ND.sample_object.maptext = "<font color='white'>[(ND.number > 1)? "[ND.number]" : ""]</font>"
+			ND.sample_object.maptext = "<font color='white' face='Small Fonts'>[(ND.number > 1) ? "[ND.number]" : ""]</font>"
 			ND.sample_object.layer = ABOVE_HUD_LAYER
 			ND.sample_object.plane = ABOVE_HUD_PLANE
 			cx++
-			if(cx > (4+cols))
+			if(cx > (4 + cols))
 				cx = 4
 				cy--
 	else
@@ -198,78 +193,81 @@
 			O.layer = ABOVE_HUD_LAYER
 			O.plane = ABOVE_HUD_PLANE
 			cx++
-			if(cx > (4+cols))
+			if(cx > (4 + cols))
 				cx = 4
 				cy--
-	src.closer.screen_loc = "[4+cols+1]:16,2:16"
-	return
+	closer.screen_loc = "[4 + cols + 1]:16,2:16"
 
 /datum/numbered_display
 	var/obj/item/sample_object
 	var/number
 
-/datum/numbered_display/New(obj/item/sample as obj)
+/datum/numbered_display/New(obj/item/sample)
 	if(!istype(sample))
 		qdel(src)
+		return
 	sample_object = sample
 	number = 1
 
 //This proc determins the size of the inventory to be displayed. Please touch it only if you know what you're doing.
-/obj/item/storage/proc/orient2hud(mob/user as mob)
-
+/obj/item/storage/proc/orient2hud(mob/user)
 	var/adjusted_contents = contents.len
 
 	//Numbered contents display
-	var/list/datum/numbered_display/numbered_contents
+	var/list/datum/numbered_display/display_contents
 	if(display_contents_with_number)
-		numbered_contents = list()
+		for(var/obj/O in contents)
+			O.layer = initial(O.layer)
+			O.plane = initial(O.plane)
+
+		display_contents = list()
 		adjusted_contents = 0
 		for(var/obj/item/I in contents)
-			var/found = 0
-			for(var/datum/numbered_display/ND in numbered_contents)
+			var/found = FALSE
+			for(var/datum/numbered_display/ND in display_contents)
 				if(ND.sample_object.type == I.type && ND.sample_object.name == I.name)
 					ND.number++
-					found = 1
+					found = TRUE
 					break
 			if(!found)
 				adjusted_contents++
-				numbered_contents.Add( new/datum/numbered_display(I) )
+				display_contents.Add(new/datum/numbered_display(I))
 
 	//var/mob/living/carbon/human/H = user
 	var/row_num = 0
-	var/col_count = min(7,storage_slots) -1
+	var/col_count = min(7, storage_slots) - 1
 	if(adjusted_contents > 7)
-		row_num = round((adjusted_contents-1) / 7) // 7 is the maximum allowed width.
-	src.standard_orient_objs(row_num, col_count, numbered_contents)
-	return
+		row_num = round((adjusted_contents - 1) / 7) // 7 is the maximum allowed width.
+	standard_orient_objs(row_num, col_count, display_contents)
 
-//This proc return 1 if the item can be picked up and 0 if it can't.
+//This proc returns TRUE if the item can be picked up and FALSE if it can't.
 //Set the stop_messages to stop it from printing messages
-/obj/item/storage/proc/can_be_inserted(obj/item/W as obj, stop_messages = 0)
-	if(!istype(W) || (W.flags & ABSTRACT)) return //Not an item
+/obj/item/storage/proc/can_be_inserted(obj/item/W, stop_messages = FALSE)
+	if(!istype(W) || (W.flags & ABSTRACT)) //Not an item
+		return
 
-	if(src.loc == W)
-		return 0 //Means the item is already in the storage item
+	if(loc == W)
+		return FALSE //Means the item is already in the storage item
 	if(contents.len >= storage_slots)
 		if(!stop_messages)
 			to_chat(usr, "<span class='warning'>[W] won't fit in [src], make some space!</span>")
-		return 0 //Storage item is full
+		return FALSE //Storage item is full
 
 	if(can_hold.len)
 		if(!is_type_in_typecache(W, can_hold))
 			if(!stop_messages)
 				to_chat(usr, "<span class='notice'>[src] cannot hold [W].</span>")
-			return 0
+			return FALSE
 
 	if(is_type_in_typecache(W, cant_hold)) //Check for specific items which this container can't hold.
 		if(!stop_messages)
 			to_chat(usr, "<span class='notice'>[src] cannot hold [W].</span>")
-		return 0
+		return FALSE
 
 	if(W.w_class > max_w_class)
 		if(!stop_messages)
 			to_chat(usr, "<span class='notice'>[W] is too big for [src].</span>")
-		return 0
+		return FALSE
 
 	var/sum_w_class = W.w_class
 	for(var/obj/item/I in contents)
@@ -278,32 +276,32 @@
 	if(sum_w_class > max_combined_w_class)
 		if(!stop_messages)
 			to_chat(usr, "<span class='notice'>[src] is full, make some space.</span>")
-		return 0
+		return FALSE
 
-	if(W.w_class >= src.w_class && (istype(W, /obj/item/storage)))
+	if(W.w_class >= w_class && (istype(W, /obj/item/storage)))
 		if(!istype(src, /obj/item/storage/backpack/holding))	//bohs should be able to hold backpacks again. The override for putting a boh in a boh is in backpack.dm.
 			if(!stop_messages)
 				to_chat(usr, "<span class='notice'>[src] cannot hold [W] as it's a storage item of the same size.</span>")
-			return 0 //To prevent the stacking of same sized storage items.
+			return FALSE //To prevent the stacking of same sized storage items.
 
 	if(W.flags & NODROP) //SHOULD be handled in unEquip, but better safe than sorry.
 		to_chat(usr, "<span class='notice'>\the [W] is stuck to your hand, you can't put it in \the [src]</span>")
-		return 0
+		return FALSE
 
-	return 1
+	return TRUE
 
 //This proc handles items being inserted. It does not perform any checks of whether an item can or can't be inserted. That's done by can_be_inserted()
 //The stop_warning parameter will stop the insertion message from being displayed. It is intended for cases where you are inserting multiple items at once,
 //such as when picking up all the items on a tile with one click.
-/obj/item/storage/proc/handle_item_insertion(obj/item/W as obj, prevent_warning = 0)
+/obj/item/storage/proc/handle_item_insertion(obj/item/W, prevent_warning = FALSE)
 	if(!istype(W))
-		return 0
+		return FALSE
 	if(usr)
 		if(!usr.unEquip(W))
-			return 0
+			return FALSE
 		usr.update_icons()	//update our overlays
 	if(silent)
-		prevent_warning = 1
+		prevent_warning = TRUE
 	W.forceMove(src)
 	W.on_enter_storage(src)
 	if(usr)
@@ -315,28 +313,30 @@
 		if(!prevent_warning && !istype(W, /obj/item/gun/energy/kinetic_accelerator/crossbow))
 			for(var/mob/M in viewers(usr, null))
 				if(M == usr)
-					to_chat(usr, "<span class='notice'>You put the [W] into [src].</span>")
+					to_chat(usr, "<span class='notice'>You put [W] into [src].</span>")
 				else if(M in range(1)) //If someone is standing close enough, they can tell what it is...
 					M.show_message("<span class='notice'>[usr] puts [W] into [src].</span>")
 				else if(W && W.w_class >= WEIGHT_CLASS_NORMAL) //Otherwise they can only see large or normal items from a distance...
 					M.show_message("<span class='notice'>[usr] puts [W] into [src].</span>")
 
+		orient2hud(usr)
 		if(usr.s_active)
 			usr.s_active.show_to(usr)
 	W.mouse_opacity = MOUSE_OPACITY_OPAQUE //So you can click on the area around the item to equip it, instead of having to pixel hunt
 	W.in_inventory = TRUE
 	update_icon()
-	return 1
+	return TRUE
 
 //Call this proc to handle the removal of an item from the storage item. The item will be moved to the atom sent as new_target
-/obj/item/storage/proc/remove_from_storage(obj/item/W as obj, atom/new_location)
-	if(!istype(W)) return 0
+/obj/item/storage/proc/remove_from_storage(obj/item/W, atom/new_location)
+	if(!istype(W))
+		return FALSE
 
 	if(istype(src, /obj/item/storage/fancy))
 		var/obj/item/storage/fancy/F = src
-		F.update_icon(1)
+		F.update_icon(TRUE)
 
-	for(var/mob/M in range(1, src.loc))
+	for(var/mob/M in range(1, loc))
 		if(M.s_active == src)
 			if(M.client)
 				M.client.screen -= W
@@ -355,6 +355,7 @@
 		W.forceMove(get_turf(src))
 
 	if(usr)
+		orient2hud(usr)
 		if(usr.s_active)
 			usr.s_active.show_to(usr)
 	if(W.maptext)
@@ -362,7 +363,7 @@
 	W.on_exit_storage(src)
 	update_icon()
 	W.mouse_opacity = initial(W.mouse_opacity)
-	return 1
+	return TRUE
 
 /obj/item/storage/Exited(atom/A, loc)
 	remove_from_storage(A, loc) //worry not, comrade; this only gets called once
@@ -383,7 +384,7 @@
 		var/obj/item/hand_labeler/labeler = I
 		if(labeler.mode)
 			return FALSE
-	. = 1 //no afterattack
+	. = TRUE //no afterattack
 	if(isrobot(user))
 		return //Robots can't interact with storage items.
 
@@ -394,8 +395,8 @@
 
 	handle_item_insertion(I)
 
-/obj/item/storage/attack_hand(mob/user as mob)
-	playsound(src.loc, "rustle", 50, 1, -5)
+/obj/item/storage/attack_hand(mob/user)
+	playsound(loc, "rustle", 50, TRUE, -5)
 
 	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
@@ -408,17 +409,17 @@
 			H.r_store = null
 			return
 
-	if(src.loc == user)
+	orient2hud(user)
+	if(loc == user)
 		if(user.s_active)
 			user.s_active.close(user)
-		src.show_to(user)
+		show_to(user)
 	else
 		..()
 		for(var/mob/M in range(1))
 			if(M.s_active == src)
-				src.close(M)
-	src.add_fingerprint(user)
-	return
+				close(M)
+	add_fingerprint(user)
 
 /obj/item/storage/attack_ghost(mob/user)
 	if(isobserver(user))
@@ -430,19 +431,18 @@
 	set name = "Switch Gathering Method"
 	set category = "Object"
 
-	collection_mode = !collection_mode
-	switch(collection_mode)
-		if(1)
+	pickup_all_on_tile = !pickup_all_on_tile
+	switch(pickup_all_on_tile)
+		if(TRUE)
 			to_chat(usr, "[src] now picks up all items in a tile at once.")
-		if(0)
+		if(FALSE)
 			to_chat(usr, "[src] now picks up one item at a time.")
 
-
 /obj/item/storage/verb/quick_empty()
 	set name = "Empty Contents"
 	set category = "Object"
 
-	if((!ishuman(usr) && (src.loc != usr)) || usr.stat || usr.restrained())
+	if((!ishuman(usr) && (loc != usr)) || usr.stat || usr.restrained())
 		return
 
 	drop_inventory(usr)
@@ -469,14 +469,14 @@
 	else
 		verbs -= /obj/item/storage/verb/toggle_gathering_mode
 
-	boxes = new /obj/screen/storage(  )
+	boxes = new /obj/screen/storage()
 	boxes.name = "storage"
 	boxes.master = src
 	boxes.icon_state = "block"
 	boxes.screen_loc = "7,7 to 10,8"
 	boxes.layer = HUD_LAYER
 	boxes.plane = HUD_PLANE
-	closer = new /obj/screen/close(  )
+	closer = new /obj/screen/close()
 	closer.master = src
 	closer.icon_state = "backpack_close"
 	closer.layer = ABOVE_HUD_LAYER
@@ -497,12 +497,12 @@
 		var/atom/A = i
 		A.emp_act(severity)
 
-/obj/item/storage/hear_talk(mob/living/M as mob, list/message_pieces)
+/obj/item/storage/hear_talk(mob/living/M, list/message_pieces)
 	..()
 	for(var/obj/O in contents)
 		O.hear_talk(M, message_pieces)
 
-/obj/item/storage/hear_message(mob/living/M as mob, msg)
+/obj/item/storage/hear_message(mob/living/M, msg)
 	..()
 	for(var/obj/O in contents)
 		O.hear_message(M, msg)
@@ -614,3 +614,24 @@
 		A.ex_act(severity)
 		CHECK_TICK
 	..()
+
+/obj/item/storage/proc/can_items_stack(obj/item/item_1, obj/item/item_2)
+	if(!item_1 || !item_2)
+		return
+
+	return item_1.type == item_2.type && item_1.name == item_2.name
+
+/obj/item/storage/proc/swap_items(obj/item/item_1, obj/item/item_2, mob/user = null)
+	if(!(item_1.loc == src && item_2.loc == src))
+		return
+
+	var/index_1 = contents.Find(item_1)
+	var/index_2 = contents.Find(item_2)
+
+	var/list/new_contents = contents.Copy()
+	new_contents.Swap(index_1, index_2)
+	contents = new_contents
+
+	if(user && user.s_active == src)
+		orient2hud(user)
+		show_to(user)

code/game/turfs/simulated/floor/asteroid.dm

@@ -85,7 +85,7 @@
 
 	else if(istype(I, /obj/item/storage/bag/ore))
 		var/obj/item/storage/bag/ore/S = I
-		if(S.collection_mode == 1)
+		if(S.pickup_all_on_tile)
 			for(var/obj/item/stack/ore/O in contents)
 				O.attackby(I, user)
 				return