Merge pull request #1137 from Citadel-Station-13/upstream-merge-27541

[MIRROR] If you're gonna make a subsystem do it right

code/controllers/subsystem/fields.dm

@@ -1,27 +0,0 @@
-
-SUBSYSTEM_DEF(fields)
-	name = "Fields"
-	wait = 2
-	priority = 40
-	flags = SS_KEEP_TIMING
-	var/list/datum/proximity_monitor/advanced/running = list()
-	var/list/datum/proximity_monitor/advanced/currentrun = list()
-
-/datum/controller/subsystem/fields/fire(resumed = 0)
-	if(!resumed)
-		src.currentrun = running.Copy()
-	var/list/currentrun = src.currentrun
-	while(currentrun.len)
-		var/datum/proximity_monitor/advanced/F = currentrun[currentrun.len]
-		currentrun.len--
-		if(!F.requires_processing)
-			continue
-		F.process()
-		if(MC_TICK_CHECK)
-			return
-
-/datum/controller/subsystem/fields/proc/register_new_field(datum/proximity_monitor/advanced/F)
-	running += F
-
-/datum/controller/subsystem/fields/proc/unregister_field(datum/proximity_monitor/advanced/F)
-	running -= F

code/controllers/subsystem/processing/fields.dm

@@ -0,0 +1,6 @@
+PROCESSING_SUBSYSTEM_DEF(fields)
+	name = "Fields"
+	wait = 2
+	priority = 40
+	flags = SS_KEEP_TIMING | SS_NO_INIT
+	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME