Merge pull request #24342 from ChangelingRain/researchscanfix

You can now have multiple research scanners active at a time

code/datums/action.dm

@@ -330,32 +330,30 @@
 /datum/action/item_action/hands_free/activate
 	name = "Activate"
 
-
 /datum/action/item_action/hands_free/shift_nerves
 	name = "Shift Nerves"
 
-
 /datum/action/item_action/toggle_research_scanner
 	name = "Toggle Research Scanner"
 	button_icon_state = "scan_mode"
+	var/active = FALSE
 
 /datum/action/item_action/toggle_research_scanner/Trigger()
 	if(IsAvailable())
-		owner.research_scanner = !owner.research_scanner
-		owner << "<span class='notice'>Research analyzer is now [owner.research_scanner ? "active" : "deactivated"].</span>"
+		active = !active
+		if(active)
+			owner.research_scanner++
+		else
+			owner.research_scanner--
+		owner << "<span class='notice'>[target] research scanner has been [active ? "activated" : "deactivated"].</span>"
 		return 1
 
 /datum/action/item_action/toggle_research_scanner/Remove(mob/M)
-	if(owner)
-		owner.research_scanner = 0
+	if(owner && active)
+		owner.research_scanner--
+		active = FALSE
 	..()
 
-/datum/action/item_action/toggle_research_scanner/ApplyIcon(obj/screen/movable/action_button/current_button)
-	current_button.cut_overlays()
-	if(button_icon && button_icon_state)
-		var/image/img = image(button_icon, current_button, "scan_mode")
-		current_button.add_overlay(img)
-
 /datum/action/item_action/organ_action
 	check_flags = AB_CHECK_CONSCIOUS