diff --git a/code/__DEFINES/subsystems.dm b/code/__DEFINES/subsystems.dm
index 20b3f887453..4596c79ef1e 100644
--- a/code/__DEFINES/subsystems.dm
+++ b/code/__DEFINES/subsystems.dm
@@ -19,3 +19,26 @@
 //For servers that can't do with any additional lag, set this to none in flightpacks.dm in subsystem/processing.
 #define FLIGHTSUIT_PROCESSING_NONE 0
 #define FLIGHTSUIT_PROCESSING_FULL 1
+
+// Subsystem init_order, from highest priority to lowest priority
+// The numbers just define the ordering, they are meaningless otherwise.
+
+#define INIT_ORDER_JOBS 15
+#define INIT_ORDER_EVENTS 14
+#define INIT_ORDER_TICKER 13
+#define INIT_ORDER_MAPPING 12
+#define INIT_ORDER_ATOMS 11
+#define INIT_ORDER_MACHINES 9
+#define INIT_ORDER_SHUTTLE 3
+#define INIT_ORDER_TIMER 1
+#define INIT_ORDER_DEFAULT 0
+#define INIT_ORDER_AIR -1
+#define INIT_ORDER_MINIMAP -2
+#define INIT_ORDER_ASSETS -3
+#define INIT_ORDER_ICON_SMOOTHING -5
+#define INIT_ORDER_OVERLAY -6
+#define INIT_ORDER_XKEYSCORE -10
+#define INIT_ORDER_STICKY_BAN -10
+#define INIT_ORDER_LIGHTING -20
+#define INIT_ORDER_SQUEAK -40
+#define INIT_ORDER_PERSISTENCE -100
diff --git a/code/controllers/subsystem.dm b/code/controllers/subsystem.dm
index e4dc9f833e0..97e3efaf4ad 100644
--- a/code/controllers/subsystem.dm
+++ b/code/controllers/subsystem.dm
@@ -2,7 +2,7 @@
 /datum/controller/subsystem
 	// Metadata; you should define these.
 	name = "fire coderbus" //name of the subsystem
-	var/init_order = 0		//order of initialization. Higher numbers are initialized first, lower numbers later. Can be decimal and negative values.
+	var/init_order = INIT_ORDER_DEFAULT		//order of initialization. Higher numbers are initialized first, lower numbers later. Use defines in __DEFINES/subsystems.dm for easy understanding of order.
 	var/wait = 20			//time to wait (in deciseconds) between each call to fire(). Must be a positive integer.
 	var/priority = 50		//When mutiple subsystems need to run in the same tick, higher priority subsystems will run first and be given a higher share of the tick before MC_TICK_CHECK triggers a sleep
 
@@ -208,4 +208,4 @@
 				next_fire = world.time + wait
 		if ("queued_priority") //editing this breaks things.
 			return 0
-	. = ..()
\ No newline at end of file
+	. = ..()
diff --git a/code/controllers/subsystem/air.dm b/code/controllers/subsystem/air.dm
index 852e28077de..919b4cfce92 100644
--- a/code/controllers/subsystem/air.dm
+++ b/code/controllers/subsystem/air.dm
@@ -8,7 +8,7 @@
 
 SUBSYSTEM_DEF(air)
 	name = "Air"
-	init_order = -1
+	init_order = INIT_ORDER_AIR
 	priority = 20
 	wait = 5
 	flags = SS_BACKGROUND
diff --git a/code/controllers/subsystem/assets.dm b/code/controllers/subsystem/assets.dm
index ac8f51de0ed..607b142c59b 100644
--- a/code/controllers/subsystem/assets.dm
+++ b/code/controllers/subsystem/assets.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(assets)
 	name = "Assets"
-	init_order = -3
+	init_order = INIT_ORDER_ASSETS
 	flags = SS_NO_FIRE
 	var/list/cache = list()
 
@@ -11,4 +11,4 @@ SUBSYSTEM_DEF(assets)
 
 	for(var/client/C in GLOB.clients)
 		addtimer(CALLBACK(GLOBAL_PROC, .proc/getFilesSlow, C, cache, FALSE), 10)
-	..()
\ No newline at end of file
+	..()
diff --git a/code/controllers/subsystem/atoms.dm b/code/controllers/subsystem/atoms.dm
index 7f1ee2634b4..4ca35e434d2 100644
--- a/code/controllers/subsystem/atoms.dm
+++ b/code/controllers/subsystem/atoms.dm
@@ -4,7 +4,7 @@
 
 SUBSYSTEM_DEF(atoms)
 	name = "Atoms"
-	init_order = 11
+	init_order = INIT_ORDER_ATOMS
 	flags = SS_NO_FIRE
 
 	var/initialized = INITIALIZATION_INSSATOMS
diff --git a/code/controllers/subsystem/events.dm b/code/controllers/subsystem/events.dm
index cae880485c9..411d6f0b14e 100644
--- a/code/controllers/subsystem/events.dm
+++ b/code/controllers/subsystem/events.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(events)
 	name = "Events"
-	init_order = 6
+	init_order = INIT_ORDER_EVENTS
 
 	var/list/control = list()	//list of all datum/round_event_control. Used for selecting events based on weight and occurrences.
 	var/list/running = list()	//list of all existing /datum/round_event
diff --git a/code/controllers/subsystem/icon_smooth.dm b/code/controllers/subsystem/icon_smooth.dm
index 83c58950185..84df089973f 100644
--- a/code/controllers/subsystem/icon_smooth.dm
+++ b/code/controllers/subsystem/icon_smooth.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(icon_smooth)
 	name = "Icon Smoothing"
-	init_order = -5
+	init_order = INIT_ORDER_ICON_SMOOTHING
 	wait = 1
 	priority = 35
 	flags = SS_TICKER
@@ -29,4 +29,4 @@ SUBSYSTEM_DEF(icon_smooth)
 		smooth_icon(A)
 		CHECK_TICK
 
-	..()
\ No newline at end of file
+	..()
diff --git a/code/controllers/subsystem/ipintel.dm b/code/controllers/subsystem/ipintel.dm
index 0f351c84631..fca394924d9 100644
--- a/code/controllers/subsystem/ipintel.dm
+++ b/code/controllers/subsystem/ipintel.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(ipintel)
 	name = "XKeyScore"
-	init_order = -10
+	init_order = INIT_ORDER_XKEYSCORE
 	flags = SS_NO_FIRE
 	var/enabled = 0 //disable at round start to avoid checking reconnects
 	var/throttle = 0
diff --git a/code/controllers/subsystem/job.dm b/code/controllers/subsystem/job.dm
index 517c72512cb..68e27c9900d 100644
--- a/code/controllers/subsystem/job.dm
+++ b/code/controllers/subsystem/job.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(job)
 	name = "Jobs"
-	init_order = 14
+	init_order = INIT_ORDER_JOBS
 	flags = SS_NO_FIRE
 
 	var/list/occupations = list()		//List of all jobs
diff --git a/code/controllers/subsystem/lighting.dm b/code/controllers/subsystem/lighting.dm
index 39147714ba3..eb61e5ef394 100644
--- a/code/controllers/subsystem/lighting.dm
+++ b/code/controllers/subsystem/lighting.dm
@@ -5,7 +5,7 @@ GLOBAL_LIST_EMPTY(lighting_update_objects) // List of lighting objects queued fo
 SUBSYSTEM_DEF(lighting)
 	name = "Lighting"
 	wait = 2
-	init_order = -20
+	init_order = INIT_ORDER_LIGHTING
 	flags = SS_TICKER
 
 	var/initialized = FALSE
diff --git a/code/controllers/subsystem/machines.dm b/code/controllers/subsystem/machines.dm
index 98527520817..ab941eb1c6b 100644
--- a/code/controllers/subsystem/machines.dm
+++ b/code/controllers/subsystem/machines.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(machines)
 	name = "Machines"
-	init_order = 9
+	init_order = INIT_ORDER_MACHINES
 	flags = SS_KEEP_TIMING
 	var/list/processing = list()
 	var/list/currentrun = list()
@@ -61,4 +61,4 @@ SUBSYSTEM_DEF(machines)
 	if (istype(SSmachines.processing))
 		processing = SSmachines.processing
 	if (istype(SSmachines.powernets))
-		powernets = SSmachines.powernets
\ No newline at end of file
+		powernets = SSmachines.powernets
diff --git a/code/controllers/subsystem/mapping.dm b/code/controllers/subsystem/mapping.dm
index bae759ac3aa..1499bc5029f 100644
--- a/code/controllers/subsystem/mapping.dm
+++ b/code/controllers/subsystem/mapping.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(mapping)
 	name = "Mapping"
-	init_order = 12
+	init_order = INIT_ORDER_MAPPING
 	flags = SS_NO_FIRE
 
 	var/list/nuke_tiles = list()
diff --git a/code/controllers/subsystem/minimap.dm b/code/controllers/subsystem/minimap.dm
index 6c3ce67dc23..10c6f8e5c46 100644
--- a/code/controllers/subsystem/minimap.dm
+++ b/code/controllers/subsystem/minimap.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(minimap)
 	name = "Minimap"
-	init_order = -2
+	init_order = INIT_ORDER_MINIMAP
 	flags = SS_NO_FIRE
 	var/const/MINIMAP_SIZE = 2048
 	var/const/TILE_SIZE = 8
diff --git a/code/controllers/subsystem/mobs.dm b/code/controllers/subsystem/mobs.dm
index d9b78a77adf..f87b94bac48 100644
--- a/code/controllers/subsystem/mobs.dm
+++ b/code/controllers/subsystem/mobs.dm
@@ -1,6 +1,5 @@
 SUBSYSTEM_DEF(mobs)
 	name = "Mobs"
-	init_order = 4
 	priority = 100
 	flags = SS_KEEP_TIMING|SS_NO_INIT
 
@@ -26,4 +25,4 @@ SUBSYSTEM_DEF(mobs)
 		else
 			GLOB.mob_list.Remove(M)
 		if (MC_TICK_CHECK)
-			return
\ No newline at end of file
+			return
diff --git a/code/controllers/subsystem/npcpool.dm b/code/controllers/subsystem/npcpool.dm
index 11d819d0678..abdeb0e9d35 100644
--- a/code/controllers/subsystem/npcpool.dm
+++ b/code/controllers/subsystem/npcpool.dm
@@ -11,7 +11,7 @@ SUBSYSTEM_DEF(npcpool)
 	var/list/canBeUsed = list()
 	var/list/needsDelegate = list()
 	var/list/needsAssistant = list()
-	
+
 	var/list/processing = list()
 	var/list/currentrun = list()
 	var/stage
diff --git a/code/controllers/subsystem/persistence.dm b/code/controllers/subsystem/persistence.dm
index 80517d1e3a1..e1cf992e8b5 100644
--- a/code/controllers/subsystem/persistence.dm
+++ b/code/controllers/subsystem/persistence.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(persistence)
 	name = "Persistence"
-	init_order = -100
+	init_order = INIT_ORDER_PERSISTENCE
 	flags = SS_NO_FIRE
 	var/savefile/secret_satchels
 	var/list/satchel_blacklist 		= list() //this is a typecache
diff --git a/code/controllers/subsystem/processing/overlays.dm b/code/controllers/subsystem/processing/overlays.dm
index c28dc245fae..1a42944bb5f 100644
--- a/code/controllers/subsystem/processing/overlays.dm
+++ b/code/controllers/subsystem/processing/overlays.dm
@@ -3,7 +3,7 @@ PROCESSING_SUBSYSTEM_DEF(overlays)
 	flags = SS_TICKER|SS_FIRE_IN_LOBBY
 	wait = 1
 	priority = 500
-	init_order = -6
+	init_order = INIT_ORDER_OVERLAY
 
 	stat_tag = "Ov"
 	currentrun = null
diff --git a/code/controllers/subsystem/radio.dm b/code/controllers/subsystem/radio.dm
index d69575f60f1..de605cb5548 100644
--- a/code/controllers/subsystem/radio.dm
+++ b/code/controllers/subsystem/radio.dm
@@ -1,6 +1,5 @@
 SUBSYSTEM_DEF(radio)
 	name = "Radio"
-	init_order = 18
 	flags = SS_NO_FIRE|SS_NO_INIT
 
 	var/list/datum/radio_frequency/frequencies = list()
@@ -39,4 +38,4 @@ SUBSYSTEM_DEF(radio)
 		frequency.frequency = new_frequency
 		frequencies[f_text] = frequency
 
-	return frequency
\ No newline at end of file
+	return frequency
diff --git a/code/controllers/subsystem/religion.dm b/code/controllers/subsystem/religion.dm
index df772925d40..bba7dd082e0 100644
--- a/code/controllers/subsystem/religion.dm
+++ b/code/controllers/subsystem/religion.dm
@@ -1,6 +1,5 @@
 SUBSYSTEM_DEF(religion)
 	name = "Religion"
-	init_order = 19
 	flags = SS_NO_FIRE|SS_NO_INIT
 
 	var/religion
@@ -8,4 +7,4 @@ SUBSYSTEM_DEF(religion)
 	var/bible_name
 	var/bible_icon_state
 	var/bible_item_state
-	var/holy_weapon_type
\ No newline at end of file
+	var/holy_weapon_type
diff --git a/code/controllers/subsystem/shuttle.dm b/code/controllers/subsystem/shuttle.dm
index 4270ff7851f..bc8c14a74d1 100644
--- a/code/controllers/subsystem/shuttle.dm
+++ b/code/controllers/subsystem/shuttle.dm
@@ -3,7 +3,7 @@
 SUBSYSTEM_DEF(shuttle)
 	name = "Shuttle"
 	wait = 10
-	init_order = 3
+	init_order = INIT_ORDER_SHUTTLE
 	flags = SS_KEEP_TIMING|SS_NO_TICK_CHECK
 
 	var/list/mobile = list()
@@ -505,4 +505,4 @@ SUBSYSTEM_DEF(shuttle)
 
 	centcom_message = SSshuttle.centcom_message
 	ordernum = SSshuttle.ordernum
-	points = SSshuttle.points
\ No newline at end of file
+	points = SSshuttle.points
diff --git a/code/controllers/subsystem/squeak.dm b/code/controllers/subsystem/squeak.dm
index a4f0d6e52dd..d94efd0a4ac 100644
--- a/code/controllers/subsystem/squeak.dm
+++ b/code/controllers/subsystem/squeak.dm
@@ -4,7 +4,7 @@
 
 SUBSYSTEM_DEF(squeak)
 	name = "Squeak"
-	priority = 40
+	init_order = INIT_ORDER_SQUEAK
 	flags = SS_NO_FIRE
 
 	var/list/exposed_wires = list()
diff --git a/code/controllers/subsystem/stickyban.dm b/code/controllers/subsystem/stickyban.dm
index b5702455b87..371cf22b3bf 100644
--- a/code/controllers/subsystem/stickyban.dm
+++ b/code/controllers/subsystem/stickyban.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(stickyban)
 	name = "Sticky Ban"
-	init_order = -10
+	init_order = INIT_ORDER_STICKY_BAN
 	flags = SS_NO_FIRE
 
 	var/list/cache = list()
diff --git a/code/controllers/subsystem/sun.dm b/code/controllers/subsystem/sun.dm
index 7f443aadc05..7a3528cc3d9 100644
--- a/code/controllers/subsystem/sun.dm
+++ b/code/controllers/subsystem/sun.dm
@@ -1,7 +1,6 @@
 SUBSYSTEM_DEF(sun)
 	name = "Sun"
 	wait = 600
-	init_order = 2
 	flags = SS_NO_TICK_CHECK|SS_NO_INIT
 	var/angle
 	var/dx
diff --git a/code/controllers/subsystem/tgui.dm b/code/controllers/subsystem/tgui.dm
index edec49bcbbb..862dfb0f98d 100644
--- a/code/controllers/subsystem/tgui.dm
+++ b/code/controllers/subsystem/tgui.dm
@@ -1,7 +1,6 @@
 SUBSYSTEM_DEF(tgui)
 	name = "tgui"
 	wait = 9
-	init_order = 16
 	flags = SS_NO_INIT|SS_FIRE_IN_LOBBY
 	priority = 110
 
diff --git a/code/controllers/subsystem/ticker.dm b/code/controllers/subsystem/ticker.dm
index 5d572f8a07a..0e75f5e681f 100644
--- a/code/controllers/subsystem/ticker.dm
+++ b/code/controllers/subsystem/ticker.dm
@@ -2,7 +2,7 @@
 
 SUBSYSTEM_DEF(ticker)
 	name = "Ticker"
-	init_order = 13
+	init_order = INIT_ORDER_TICKER
 
 	priority = 200
 	flags = SS_FIRE_IN_LOBBY|SS_KEEP_TIMING
diff --git a/code/controllers/subsystem/timer.dm b/code/controllers/subsystem/timer.dm
index 6a63f090e56..55ebbfa3524 100644
--- a/code/controllers/subsystem/timer.dm
+++ b/code/controllers/subsystem/timer.dm
@@ -4,7 +4,7 @@
 SUBSYSTEM_DEF(timer)
 	name = "Timer"
 	wait = 1 //SS_TICKER subsystem, so wait is in ticks
-	init_order = 1
+	init_order = INIT_ORDER_TIMER
 
 	flags = SS_FIRE_IN_LOBBY|SS_TICKER|SS_NO_INIT
 
diff --git a/code/game/atoms_movable.dm b/code/game/atoms_movable.dm
index 9c12f5d6712..f96d6eb8a23 100644
--- a/code/game/atoms_movable.dm
+++ b/code/game/atoms_movable.dm
@@ -125,6 +125,7 @@
 	var/datum/proximity_monitor/proximity_monitor = src.proximity_monitor
 	if(proximity_monitor)
 		proximity_monitor.HandleMove()
+
 	return 1
 
 /atom/movable/proc/clean_on_move()
@@ -175,7 +176,7 @@
 
 	if(stationloving && force)
 		STOP_PROCESSING(SSinbounds, src)
-	
+
 	QDEL_NULL(proximity_monitor)
 
 	. = ..()
@@ -627,4 +628,4 @@
 /atom/movable/proc/ConveyorMove(movedir)
 	set waitfor = FALSE
 	if(!anchored && has_gravity())
-		step(src, movedir)
\ No newline at end of file
+		step(src, movedir)