diff --git a/code/__DEFINES/subsystems.dm b/code/__DEFINES/subsystems.dm
index 5a0dded276..39f9722486 100644
--- a/code/__DEFINES/subsystems.dm
+++ b/code/__DEFINES/subsystems.dm
@@ -70,6 +70,40 @@
 #define INIT_ORDER_SQUEAK -40
 #define INIT_ORDER_PERSISTENCE -100
 
+// Subsystem fire priority, from lowest to highest priority
+// If the subsystem isn't listed here it's either DEFAULT or PROCESS (if it's a processing subsystem child)
+
+#define FIRE_PRIORITY_IDLE_NPC		1
+#define FIRE_PRIORITY_SERVER_MAINT	1
+
+#define FIRE_PRIORITY_GARBAGE		4
+#define FIRE_PRIORITY_RESEARCH		4
+#define FIRE_PRIORITY_AIR			5
+#define FIRE_PRIORITY_NPC			5
+#define FIRE_PRIORITY_PROCESS		6
+#define FIRE_PRIORITY_THROWING		6
+#define FIRE_PRIORITY_FLIGHTPACKS	7
+#define FIRE_PRIORITY_SPACEDRIFT	7
+#define FIRE_PRIOTITY_SMOOTHING		8
+#define FIRE_PRIORITY_ORBIT			8
+#define FIRE_PRIORITY_OBJ			9
+#define FIRE_PRIORUTY_FIELDS		9
+#define FIRE_PRIORITY_ACID			9
+#define FIRE_PRIOTITY_BURNING		9
+#define FIRE_PRIORITY_INBOUNDS		9
+
+#define FIRE_PRIORITY_DEFAULT		10
+
+#define FIRE_PRIORITY_PARALLAX		11
+#define FIRE_PRIORITY_NETWORKS		12
+#define FIRE_PRIORITY_MOBS			13
+#define FIRE_PRIORITY_TGUI			14
+
+#define FIRE_PRIORITY_TICKER		19
+#define FIRE_PRIORITY_OVERLAYS		20
+
+#define FIRE_PRIORITY_INPUT			100 // This must always always be the max highest priority. Player input must never be lost.
+
 // SS runlevels
 
 #define RUNLEVEL_INIT 0
diff --git a/code/controllers/subsystem.dm b/code/controllers/subsystem.dm
index 8d450e3a8e..c3779dc98f 100644
--- a/code/controllers/subsystem.dm
+++ b/code/controllers/subsystem.dm
@@ -4,7 +4,7 @@
 	name = "fire coderbus" //name of the subsystem
 	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
+	var/priority = FIRE_PRIORITY_DEFAULT	//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
 
 	var/flags = 0			//see MC.dm in __DEFINES Most flags must be set on world start to take full effect. (You can also restart the mc to force them to process again)
 
diff --git a/code/controllers/subsystem/acid.dm b/code/controllers/subsystem/acid.dm
index a83afb3923..e3c415960b 100644
--- a/code/controllers/subsystem/acid.dm
+++ b/code/controllers/subsystem/acid.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(acid)
 	name = "Acid"
-	priority = 40
+	priority = FIRE_PRIORITY_ACID
 	flags = SS_NO_INIT|SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
diff --git a/code/controllers/subsystem/air.dm b/code/controllers/subsystem/air.dm
index 59b6fc34ef..1775d470b0 100644
--- a/code/controllers/subsystem/air.dm
+++ b/code/controllers/subsystem/air.dm
@@ -9,7 +9,7 @@
 SUBSYSTEM_DEF(air)
 	name = "Atmospherics"
 	init_order = INIT_ORDER_AIR
-	priority = 20
+	priority = FIRE_PRIORITY_AIR
 	wait = 5
 	flags = SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
diff --git a/code/controllers/subsystem/fire_burning.dm b/code/controllers/subsystem/fire_burning.dm
index 73358000f1..db6dc6513e 100644
--- a/code/controllers/subsystem/fire_burning.dm
+++ b/code/controllers/subsystem/fire_burning.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(fire_burning)
 	name = "Fire Burning"
-	priority = 40
+	priority = FIRE_PRIOTITY_BURNING
 	flags = SS_NO_INIT|SS_BACKGROUND
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
diff --git a/code/controllers/subsystem/garbage.dm b/code/controllers/subsystem/garbage.dm
index 6203f1b474..4faf234ffd 100644
--- a/code/controllers/subsystem/garbage.dm
+++ b/code/controllers/subsystem/garbage.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(garbage)
 	name = "Garbage"
-	priority = 15
+	priority = FIRE_PRIORITY_GARBAGE
 	wait = 2 SECONDS
 	flags = SS_POST_FIRE_TIMING|SS_BACKGROUND|SS_NO_INIT
 	runlevels = RUNLEVELS_DEFAULT | RUNLEVEL_LOBBY
diff --git a/code/controllers/subsystem/icon_smooth.dm b/code/controllers/subsystem/icon_smooth.dm
index 84df089973..d0ad2ffbc3 100644
--- a/code/controllers/subsystem/icon_smooth.dm
+++ b/code/controllers/subsystem/icon_smooth.dm
@@ -2,7 +2,7 @@ SUBSYSTEM_DEF(icon_smooth)
 	name = "Icon Smoothing"
 	init_order = INIT_ORDER_ICON_SMOOTHING
 	wait = 1
-	priority = 35
+	priority = FIRE_PRIOTITY_SMOOTHING
 	flags = SS_TICKER
 
 	var/list/smooth_queue = list()
diff --git a/code/controllers/subsystem/idlenpcpool.dm b/code/controllers/subsystem/idlenpcpool.dm
index 49846e6c9d..0ad2becde6 100644
--- a/code/controllers/subsystem/idlenpcpool.dm
+++ b/code/controllers/subsystem/idlenpcpool.dm
@@ -1,7 +1,7 @@
 SUBSYSTEM_DEF(idlenpcpool)
 	name = "Idling NPC Pool"
 	flags = SS_POST_FIRE_TIMING|SS_NO_INIT|SS_BACKGROUND
-	priority = 10
+	priority = FIRE_PRIORITY_IDLE_NPC
 	wait = 60
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
diff --git a/code/controllers/subsystem/inbounds.dm b/code/controllers/subsystem/inbounds.dm
index 16e0f53028..63063c258f 100644
--- a/code/controllers/subsystem/inbounds.dm
+++ b/code/controllers/subsystem/inbounds.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(inbounds)
 	name = "Inbounds"
-	priority = 40
+	priority = FIRE_PRIORITY_INBOUNDS
 	flags = SS_NO_INIT
 	runlevels = RUNLEVEL_GAME
 
diff --git a/code/controllers/subsystem/input.dm b/code/controllers/subsystem/input.dm
new file mode 100644
index 0000000000..f553d66307
--- /dev/null
+++ b/code/controllers/subsystem/input.dm
@@ -0,0 +1,12 @@
+SUBSYSTEM_DEF(input)
+	name = "Input"
+	wait = 1 //SS_TICKER means this runs every tick
+	flags = SS_TICKER | SS_NO_INIT
+	priority = FIRE_PRIORITY_INPUT
+	runlevels = RUNLEVELS_DEFAULT | RUNLEVEL_LOBBY
+
+/datum/controller/subsystem/input/fire()
+	var/list/clients = GLOB.clients // Let's sing the list cache song
+	for(var/i in 1 to clients.len)
+		var/client/C = clients[i]
+		C.keyLoop()
diff --git a/code/controllers/subsystem/mobs.dm b/code/controllers/subsystem/mobs.dm
index bcdb1af8ed..14ad19e1ea 100644
--- a/code/controllers/subsystem/mobs.dm
+++ b/code/controllers/subsystem/mobs.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(mobs)
 	name = "Mobs"
-	priority = 100
+	priority = FIRE_PRIORITY_MOBS
 	flags = SS_KEEP_TIMING
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
diff --git a/code/controllers/subsystem/npcpool.dm b/code/controllers/subsystem/npcpool.dm
index 6ee4626f25..ca050cb9b2 100644
--- a/code/controllers/subsystem/npcpool.dm
+++ b/code/controllers/subsystem/npcpool.dm
@@ -6,7 +6,7 @@
 SUBSYSTEM_DEF(npcpool)
 	name = "NPC Pool"
 	flags = SS_POST_FIRE_TIMING|SS_NO_INIT|SS_BACKGROUND
-	priority = 20
+	priority = FIRE_PRIORITY_NPC
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
 	var/list/canBeUsed = list()
diff --git a/code/controllers/subsystem/orbit.dm b/code/controllers/subsystem/orbit.dm
index 6184bb005b..9567fb95a2 100644
--- a/code/controllers/subsystem/orbit.dm
+++ b/code/controllers/subsystem/orbit.dm
@@ -1,3 +1,4 @@
+<<<<<<< HEAD
 SUBSYSTEM_DEF(orbit)
 	name = "Orbits"
 	priority = 35
@@ -42,3 +43,49 @@ SUBSYSTEM_DEF(orbit)
 			return
 
 
+=======
+SUBSYSTEM_DEF(orbit)
+	name = "Orbits"
+	priority = FIRE_PRIORITY_ORBIT
+	wait = 2
+	flags = SS_NO_INIT|SS_TICKER
+
+	var/list/currentrun = list()
+	var/list/processing = list()
+
+/datum/controller/subsystem/orbit/stat_entry()
+	..("P:[processing.len]")
+
+
+/datum/controller/subsystem/orbit/fire(resumed = 0)
+	if (!resumed)
+		src.currentrun = processing.Copy()
+
+	//cache for sanic speed (lists are references anyways)
+	var/list/currentrun = src.currentrun
+
+	while (currentrun.len)
+		var/datum/orbit/O = currentrun[currentrun.len]
+		currentrun.len--
+		if (!O)
+			processing -= O
+			if (MC_TICK_CHECK)
+				return
+			continue
+		if (!O.orbiter)
+			qdel(O)
+			if (MC_TICK_CHECK)
+				return
+			continue
+		if (O.lastprocess >= world.time) //we already checked recently
+			if (MC_TICK_CHECK)
+				return
+			continue
+		var/targetloc = get_turf(O.orbiting)
+		if (targetloc != O.lastloc || O.orbiter.loc != targetloc)
+			O.Check(targetloc)
+		if (MC_TICK_CHECK)
+			return
+
+
+>>>>>>> 0244b61... Merge pull request #33537 from ninjanomnom/priority-defines
diff --git a/code/controllers/subsystem/overlays.dm b/code/controllers/subsystem/overlays.dm
index d0b2e8c303..23edb3e487 100644
--- a/code/controllers/subsystem/overlays.dm
+++ b/code/controllers/subsystem/overlays.dm
@@ -2,7 +2,7 @@ SUBSYSTEM_DEF(overlays)
 	name = "Overlay"
 	flags = SS_TICKER
 	wait = 1
-	priority = 500
+	priority = FIRE_PRIORITY_OVERLAYS
 	init_order = INIT_ORDER_OVERLAY
 	runlevels = RUNLEVELS_DEFAULT | RUNLEVEL_SETUP
 
diff --git a/code/controllers/subsystem/parallax.dm b/code/controllers/subsystem/parallax.dm
index 39d07ee676..f86e3f8ea7 100644
--- a/code/controllers/subsystem/parallax.dm
+++ b/code/controllers/subsystem/parallax.dm
@@ -2,7 +2,7 @@ SUBSYSTEM_DEF(parallax)
 	name = "Parallax"
 	wait = 2
 	flags = SS_POST_FIRE_TIMING | SS_BACKGROUND | SS_NO_INIT
-	priority = 65
+	priority = FIRE_PRIORITY_PARALLAX
 	runlevels = RUNLEVEL_LOBBY | RUNLEVELS_DEFAULT
 	var/list/currentrun
 
diff --git a/code/controllers/subsystem/processing/fields.dm b/code/controllers/subsystem/processing/fields.dm
index 6a878fa142..b6996377b5 100644
--- a/code/controllers/subsystem/processing/fields.dm
+++ b/code/controllers/subsystem/processing/fields.dm
@@ -1,6 +1,6 @@
 PROCESSING_SUBSYSTEM_DEF(fields)
 	name = "Fields"
 	wait = 2
-	priority = 40
+	priority = FIRE_PRIORUTY_FIELDS
 	flags = SS_KEEP_TIMING | SS_NO_INIT
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
diff --git a/code/controllers/subsystem/processing/flightpacks.dm b/code/controllers/subsystem/processing/flightpacks.dm
index 1d85811878..2981789338 100644
--- a/code/controllers/subsystem/processing/flightpacks.dm
+++ b/code/controllers/subsystem/processing/flightpacks.dm
@@ -1,6 +1,6 @@
 PROCESSING_SUBSYSTEM_DEF(flightpacks)
 	name = "Flightpack Movement"
-	priority = 30
+	priority = FIRE_PRIORITY_FLIGHTPACKS
 	wait = 2
 	stat_tag = "FM"
 	flags = SS_NO_INIT|SS_TICKER|SS_KEEP_TIMING
diff --git a/code/controllers/subsystem/processing/networks.dm b/code/controllers/subsystem/processing/networks.dm
index 69c5fe1b2b..05c7d17364 100644
--- a/code/controllers/subsystem/processing/networks.dm
+++ b/code/controllers/subsystem/processing/networks.dm
@@ -1,3 +1,4 @@
+<<<<<<< HEAD
 PROCESSING_SUBSYSTEM_DEF(networks)
 	name = "Networks"
 	priority = 80
@@ -34,3 +35,41 @@ PROCESSING_SUBSYSTEM_DEF(networks)
 /datum/controller/subsystem/processing/networks/proc/unregister_interface(datum/component/ntnet_interface/D)
 	interfaces_by_id -= D.hardware_id
 	return TRUE
+=======
+PROCESSING_SUBSYSTEM_DEF(networks)
+	name = "Networks"
+	priority = FIRE_PRIORITY_NETWORKS
+	wait = 1
+	stat_tag = "NET"
+	flags = SS_KEEP_TIMING
+	init_order = INIT_ORDER_NETWORKS
+	var/datum/ntnet/station/station_network
+	var/assignment_hardware_id = HID_RESTRICTED_END
+	var/list/networks_by_id = list()				//id = network
+	var/list/interfaces_by_id = list()				//hardware id = component interface
+
+/datum/controller/subsystem/processing/networks/Initialize()
+	station_network = new
+	station_network.register_map_supremecy()
+	. = ..()
+
+/datum/controller/subsystem/processing/networks/proc/register_network(datum/ntnet/network)
+	if(!networks_by_id[network.network_id])
+		networks_by_id[network.network_id] = network
+		return TRUE
+	return FALSE
+
+/datum/controller/subsystem/processing/networks/proc/unregister_network(datum/ntnet/network)
+	networks_by_id -= network.network_id
+	return TRUE
+
+/datum/controller/subsystem/processing/networks/proc/register_interface(datum/component/ntnet_interface/D)
+	if(!interfaces_by_id[D.hardware_id])
+		interfaces_by_id[D.hardware_id] = D
+		return TRUE
+	return FALSE
+
+/datum/controller/subsystem/processing/networks/proc/unregister_interface(datum/component/ntnet_interface/D)
+	interfaces_by_id -= D.hardware_id
+	return TRUE
+>>>>>>> 0244b61... Merge pull request #33537 from ninjanomnom/priority-defines
diff --git a/code/controllers/subsystem/processing/obj.dm b/code/controllers/subsystem/processing/obj.dm
index 29fe277232..68f6f16cea 100644
--- a/code/controllers/subsystem/processing/obj.dm
+++ b/code/controllers/subsystem/processing/obj.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(obj)
 	name = "Objects"
-	priority = 40
+	priority = FIRE_PRIORITY_OBJ
 	flags = SS_NO_INIT
 
 	var/list/processing = list()
diff --git a/code/controllers/subsystem/processing/processing.dm b/code/controllers/subsystem/processing/processing.dm
index 0586975866..f6d45ebff2 100644
--- a/code/controllers/subsystem/processing/processing.dm
+++ b/code/controllers/subsystem/processing/processing.dm
@@ -2,7 +2,7 @@
 
 SUBSYSTEM_DEF(processing)
 	name = "Processing"
-	priority = 25
+	priority = FIRE_PRIORITY_PROCESS
 	flags = SS_BACKGROUND|SS_POST_FIRE_TIMING|SS_NO_INIT
 	wait = 10
 
diff --git a/code/controllers/subsystem/processing/projectiles.dm b/code/controllers/subsystem/processing/projectiles.dm
index ebf217c79a..cc2399e3df 100644
--- a/code/controllers/subsystem/processing/projectiles.dm
+++ b/code/controllers/subsystem/processing/projectiles.dm
@@ -1,6 +1,5 @@
 PROCESSING_SUBSYSTEM_DEF(projectiles)
 	name = "Projectiles"
-	priority = 25
 	wait = 1
 	stat_tag = "PP"
 	flags = SS_NO_INIT|SS_TICKER|SS_KEEP_TIMING
diff --git a/code/controllers/subsystem/radiation.dm b/code/controllers/subsystem/radiation.dm
index 0b69e003fc..a6cd658bf6 100644
--- a/code/controllers/subsystem/radiation.dm
+++ b/code/controllers/subsystem/radiation.dm
@@ -1,7 +1,6 @@
 PROCESSING_SUBSYSTEM_DEF(radiation)
 	name = "Radiation"
 	flags = SS_NO_INIT | SS_BACKGROUND
-	priority = 25
 
 	var/list/warned_atoms = list()
 
diff --git a/code/controllers/subsystem/research.dm b/code/controllers/subsystem/research.dm
index d1bcf31885..06b5889e58 100644
--- a/code/controllers/subsystem/research.dm
+++ b/code/controllers/subsystem/research.dm
@@ -2,7 +2,7 @@
 SUBSYSTEM_DEF(research)
 	name = "Research"
 	flags = SS_KEEP_TIMING
-	priority = 15		//My powergame is priority.
+	priority = FIRE_PRIORITY_RESEARCH
 	wait = 10
 	init_order = INIT_ORDER_RESEARCH
 	var/list/invalid_design_ids = list()		//associative id = number of times
diff --git a/code/controllers/subsystem/server_maint.dm b/code/controllers/subsystem/server_maint.dm
index cb5a86bd75..dd68443bd7 100644
--- a/code/controllers/subsystem/server_maint.dm
+++ b/code/controllers/subsystem/server_maint.dm
@@ -4,7 +4,7 @@ SUBSYSTEM_DEF(server_maint)
 	name = "Server Tasks"
 	wait = 6
 	flags = SS_POST_FIRE_TIMING
-	priority = 10
+	priority = FIRE_PRIORITY_SERVER_MAINT
 	init_order = INIT_ORDER_SERVER_MAINT
 	runlevels = RUNLEVEL_LOBBY | RUNLEVELS_DEFAULT
 	var/list/currentrun
diff --git a/code/controllers/subsystem/spacedrift.dm b/code/controllers/subsystem/spacedrift.dm
index 8fe7cbe048..56a6786a20 100644
--- a/code/controllers/subsystem/spacedrift.dm
+++ b/code/controllers/subsystem/spacedrift.dm
@@ -1,6 +1,6 @@
 SUBSYSTEM_DEF(spacedrift)
 	name = "Space Drift"
-	priority = 30
+	priority = FIRE_PRIORITY_SPACEDRIFT
 	wait = 5
 	flags = SS_NO_INIT|SS_KEEP_TIMING
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
diff --git a/code/controllers/subsystem/tgui.dm b/code/controllers/subsystem/tgui.dm
index a9b307bc0d..e03299f57f 100644
--- a/code/controllers/subsystem/tgui.dm
+++ b/code/controllers/subsystem/tgui.dm
@@ -2,7 +2,7 @@ SUBSYSTEM_DEF(tgui)
 	name = "tgui"
 	wait = 9
 	flags = SS_NO_INIT
-	priority = 110
+	priority = FIRE_PRIORITY_TGUI
 	runlevels = RUNLEVEL_LOBBY | RUNLEVELS_DEFAULT
 
 	var/list/currentrun = list()
diff --git a/code/controllers/subsystem/throwing.dm b/code/controllers/subsystem/throwing.dm
index 97d84a0d3b..87153fbe93 100644
--- a/code/controllers/subsystem/throwing.dm
+++ b/code/controllers/subsystem/throwing.dm
@@ -3,7 +3,7 @@
 
 SUBSYSTEM_DEF(throwing)
 	name = "Throwing"
-	priority = 25
+	priority = FIRE_PRIORITY_THROWING
 	wait = 1
 	flags = SS_NO_INIT|SS_KEEP_TIMING|SS_TICKER
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
diff --git a/code/controllers/subsystem/ticker.dm b/code/controllers/subsystem/ticker.dm
index 881bb7fcb7..d3ef05bdf8 100755
--- a/code/controllers/subsystem/ticker.dm
+++ b/code/controllers/subsystem/ticker.dm
@@ -4,7 +4,7 @@ SUBSYSTEM_DEF(ticker)
 	name = "Ticker"
 	init_order = INIT_ORDER_TICKER
 
-	priority = 200
+	priority = FIRE_PRIORITY_TICKER
 	flags = SS_KEEP_TIMING
 	runlevels = RUNLEVEL_LOBBY | RUNLEVEL_SETUP | RUNLEVEL_GAME