Refactor /mob/unEquip. (#27720)

* Refactor /mob/unEquip.

* fix things found in testing

* more fixes from testing

* fix removal of hooded suits

* fix flayers inability to deploy swarmprod

* fix changeling blade activation

* unnecessary parens

* pass default unequip args to proc overrides

* fix belts being able to forceMove into full hands

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

@@ -77,7 +77,7 @@
 		return
 
 	if(istype(I, /obj/item/shard))
-		if(!user.unEquip(I))
+		if(!user.drop_item_to_ground(I))
 			to_chat(user, "<span class='warning'>[I] is stuck to your hand!</span>")
 			return
 
@@ -88,7 +88,7 @@
 
 	if(istype(I, /obj/item/light))
 		var/obj/item/light/L = I
-		if(!user.unEquip(L))
+		if(!user.drop_item_to_ground(L))
 			to_chat(user, "<span class='warning'>[L] is stuck to your hand!</span>")
 			return
 

code/game/objects/items/devices/radio/electropack.dm

@@ -48,16 +48,15 @@
 		var/obj/item/assembly/shock_kit/A = new /obj/item/assembly/shock_kit(user)
 		A.icon = 'icons/obj/assemblies.dmi'
 
-		if(!user.unEquip(W))
+		if(!user.unequip(W))
 			to_chat(user, "<span class='notice'>\the [W] is stuck to your hand, you cannot attach it to \the [src]!</span>")
 			return
 
-		W.loc = A
+		W.forceMove(A)
 		W.master = A
 		A.part1 = W
 
-		user.unEquip(src)
-		loc = A
+		user.transfer_item_to(src, A)
 		master = A
 		A.part2 = src
 

code/game/objects/items/devices/radio/headset.dm

@@ -409,7 +409,7 @@
 			to_chat(user, "The headset can't hold another key!")
 			return
 
-		if(!user.unEquip(key))
+		if(!user.drop_item_to_ground(key))
 			to_chat(user, "<span class='warning'>[key] is stuck to your hand, you can't insert it in [src].</span>")
 			return
 

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

@@ -332,7 +332,7 @@ SLIME SCANNER
 		to_chat(user, "<span class='notice'>An upgrade is already installed on [src].</span>")
 		return
 
-	if(!user.unEquip(I))
+	if(!user.unequip(I))
 		to_chat(user, "<span class='warning'>[src] is stuck to your hand!</span>")
 		return
 

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

@@ -32,18 +32,16 @@
 			return
 
 		if(!tank_one)
-			if(!user.unEquip(I))
+			if(!user.transfer_item_to(I, src))
 				return
 			tank_one = I
-			I.forceMove(src)
 			to_chat(user, "<span class='notice'>You attach the tank to the transfer valve.</span>")
 			if(I.w_class > w_class)
 				w_class = I.w_class
 		else if(!tank_two)
-			if(!user.unEquip(I))
+			if(!user.transfer_item_to(I, src))
 				return
 			tank_two = I
-			I.forceMove(src)
 			to_chat(user, "<span class='notice'>You attach the tank to the transfer valve.</span>")
 			if(I.w_class > w_class)
 				w_class = I.w_class
@@ -59,9 +57,9 @@
 		if(attached_device)
 			to_chat(user, "<span class='warning'>There is already a device attached to the valve, remove it first.</span>")
 			return
-		user.remove_from_mob(A)
+		if(!user.transfer_item_to(A, src))
+			return
 		attached_device = A
-		A.forceMove(src)
 		to_chat(user, "<span class='notice'>You attach [A] to the valve controls and secure it.</span>")
 		A.holder = src
 		A.toggle_secure()	//this calls update_icon(), which calls update_icon() on the holder (i.e. the bomb).