Replaced loc setting with forceMove. (#11490)

* Replaced loc setting with forceMove.

* Update forceMove to permit moving to null loc.

Also fixed atom locking with offsets not following properly.

code/modules/detectivework/detective_work.dm

@@ -158,7 +158,7 @@ var/const/FINGERPRINT_COMPLETE = 6	//This is the output of the stringpercent(pri
 				temp = null
 		if("eject")
 			if(scanning)
-				scanning.loc = loc
+				scanning.forceMove(loc)
 				scanning = null
 			else
 				temp = "Eject Failed: No Object"
@@ -168,7 +168,7 @@ var/const/FINGERPRINT_COMPLETE = 6	//This is the output of the stringpercent(pri
 			if(I && istype(I))
 				if(istype(I, /obj/item/weapon/evidencebag))
 					scanning = I.contents[1]
-					scanning.loc = src
+					scanning.forceMove(src)
 					I.overlays -= scanning
 					I.icon_state = "evidenceobj"
 				else
@@ -188,7 +188,7 @@ var/const/FINGERPRINT_COMPLETE = 6	//This is the output of the stringpercent(pri
 				if(card.amount > 1 || !card.fingerprints.len)
 					to_chat(usr, "<span class='warning'>ERROR: No prints/too many cards.</span>")
 					if(card.loc == src)
-						card.loc = src.loc
+						card.forceMove(src.loc)
 					card = null
 					return
 				if(M.drop_item(I, src))
@@ -633,7 +633,7 @@ var/const/FINGERPRINT_COMPLETE = 6	//This is the output of the stringpercent(pri
 	else
 		to_chat(usr, "<span class='warning'>ERROR: No prints/too many cards.</span>")
 		if(card.loc == src)
-			card.loc = src.loc
+			card.forceMove(src.loc)
 		card = null
 		return
 	return

code/modules/detectivework/evidence.dm

@@ -53,7 +53,7 @@
 	overlays += image(icon = icon, icon_state = "evidence")	//should look nicer for transparent stuff. not really that important, but hey.
 
 	desc = "An evidence bag containing [I]. [I.desc]"
-	I.loc = src
+	I.forceMove(src)
 	w_class = I.w_class
 	return