make fire priority values defines

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

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

code/controllers/subsystem/processing/networks.dm

@@ -1,6 +1,6 @@
 PROCESSING_SUBSYSTEM_DEF(networks)
 	name = "Networks"
-	priority = 80
+	priority = FIRE_PRIORITY_NETWORKS
 	wait = 1
 	stat_tag = "NET"
 	flags = SS_KEEP_TIMING

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()

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
 

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