Overmap exoplanet generation, ported from Bay. (#12362)

code/controllers/subsystems/processing/processing.dm

@@ -26,7 +26,7 @@ var/datum/controller/subsystem/processing/SSprocessing
 		var/datum/thing = current_run[current_run.len]
 		current_run.len--
 		if(!QDELETED(thing))
-			if (thing.process() == PROCESS_KILL)
+			if (thing.process(wait, times_fired) == PROCESS_KILL)
 				stop_processing(thing)
 		else
 			processing -= thing

code/controllers/subsystems/processing/shuttle.dm

@@ -22,6 +22,7 @@ var/datum/controller/subsystem/processing/shuttle/SSshuttle
 	var/list/landmarks_still_needed = list()     //Stores landmark_tags that need to be assigned to the sector (landmark_tag = sector) when registered.
 	var/list/shuttles_to_initialize = list()     //A queue for shuttles to initialize at the appropriate time.
 	var/list/sectors_to_initialize               //Used to find all sector objects at the appropriate time.
+	var/list/initialized_sectors = list()
 	var/block_queue = TRUE
 
 	var/tmp/list/working_shuttles
@@ -116,6 +117,8 @@ var/datum/controller/subsystem/processing/shuttle/SSshuttle
 			given_sector.add_landmark(landmark, landmark.shuttle_restricted)
 			landmarks_awaiting_sector -= landmark
 
+	initialized_sectors |= given_sector
+
 /datum/controller/subsystem/processing/shuttle/proc/try_add_landmark_tag(landmark_tag, obj/effect/overmap/visitable/given_sector)
 	var/obj/effect/shuttle_landmark/landmark = get_landmark(landmark_tag)
 	if(!landmark)