[MIRROR] Add pAI internal GPS to possible software (#3184)

* Add pAI internal GPS to possible software (#56404)

pAIs are now a useful space travelling companion, they can help you
navigate if lost (although only the pAI has the GPS view, so they'll
need to communicate the information). If you're holding a GPS, then the
pAI can find you even if you get separated.

* Add pAI internal GPS to possible software

Co-authored-by: coiax <yellowbounder@gmail.com>

code/datums/components/gps.dm

@@ -20,11 +20,18 @@ GLOBAL_LIST_EMPTY(GPS_list)
 /datum/component/gps/item
 	var/updating = TRUE //Automatic updating of GPS list. Can be set to manual by user.
 	var/global_mode = TRUE //If disabled, only GPS signals of the same Z level are shown
+	/// UI state of GPS, altering when it can be used.
+	var/datum/ui_state/state = null
 
-/datum/component/gps/item/Initialize(_gpstag = "COM0", emp_proof = FALSE)
+/datum/component/gps/item/Initialize(_gpstag = "COM0", emp_proof = FALSE, state = null)
 	. = ..()
 	if(. == COMPONENT_INCOMPATIBLE || !isitem(parent))
 		return COMPONENT_INCOMPATIBLE
+
+	if(isnull(state))
+		state = GLOB.default_state
+	src.state = state
+
 	var/atom/A = parent
 	A.add_overlay("working")
 	A.name = "[initial(A.name)] ([gpstag])"
@@ -98,6 +105,9 @@ GLOBAL_LIST_EMPTY(GPS_list)
 		ui.open()
 	ui.set_autoupdate(updating)
 
+/datum/component/gps/item/ui_state(mob/user)
+	return state
+
 /datum/component/gps/item/ui_data(mob/user)
 	var/list/data = list()
 	data["power"] = tracking