More globals (#19247)

* More globals

* planets

* .

* .

* Update jukebox.dm

* Fix timer callback syntax in jukebox.dm

* .

code/modules/overmap/sectors.dm

@@ -270,7 +270,7 @@
 	or relay the message to those who can. This message will repeat one time in 5 minutes. Thank you for your urgent assistance."
 
 	for(var/zlevel in levels_for_distress)
-		priority_announcement.Announce(message, new_title = "Automated Distress Signal", new_sound = 'sound/AI/sos.ogg', zlevel = zlevel)
+		GLOB.priority_announcement.Announce(message, new_title = "Automated Distress Signal", new_sound = 'sound/AI/sos.ogg', zlevel = zlevel)
 
 	var/image/I = image(icon, icon_state = "distress")
 	I.plane = PLANE_LIGHTING_ABOVE
@@ -288,7 +288,7 @@
 	Please render assistance under your obligations per the Interplanetary Convention on Space SAR, or relay this message to a party who can. Thank you for your urgent assistance."
 
 	for(var/zlevel in levels_for_distress)
-		priority_announcement.Announce(message, new_title = "Automated Distress Signal", new_sound = 'sound/AI/sos.ogg', zlevel = zlevel)
+		GLOB.priority_announcement.Announce(message, new_title = "Automated Distress Signal", new_sound = 'sound/AI/sos.ogg', zlevel = zlevel)
 
 /proc/build_overmap()
 	if(!global.using_map.use_overmap)

code/modules/overmap/ships/engines/engine.dm

@@ -1,6 +1,6 @@
 //Engine component object
 
-var/list/ship_engines = list()
+GLOBAL_LIST_EMPTY(ship_engines)
 /datum/ship_engine
 	var/name = "ship engine"
 	var/obj/machinery/holder	//actual engine object
@@ -8,7 +8,7 @@ var/list/ship_engines = list()
 /datum/ship_engine/New(var/obj/machinery/_holder)
 	..()
 	holder = _holder
-	ship_engines += src
+	GLOB.ship_engines += src
 
 /datum/ship_engine/proc/can_burn()
 	return 0
@@ -38,7 +38,7 @@ var/list/ship_engines = list()
 	return 1
 
 /datum/ship_engine/Destroy()
-	ship_engines -= src
+	GLOB.ship_engines -= src
 	for(var/obj/effect/overmap/visitable/ship/S in SSshuttles.ships)
 		S.engines -= src
 	holder = null

code/modules/overmap/ships/ship.dm

@@ -286,7 +286,7 @@
 	..()
 	for(var/obj/machinery/computer/ship/S in GLOB.machines)
 		S.attempt_hook_up(src)
-	for(var/datum/ship_engine/E in ship_engines)
+	for(var/datum/ship_engine/E in GLOB.ship_engines)
 		if(check_ownership(E.holder))
 			engines |= E