Revert "12/21 modernizations from TG live"

code/controllers/subsystem.dm

@@ -37,10 +37,6 @@
 // Used to initialize the subsystem BEFORE the map has loaded
 /datum/subsystem/New()
 
-//cleanup actions
-/datum/subsystem/proc/Shutdown()
-	return
-
 //previously, this would have been named 'process()' but that name is used everywhere for different things!
 //fire() seems more suitable. This is the procedure that gets called every 'wait' deciseconds.
 //fire(), and the procs it calls, SHOULD NOT HAVE ANY SLEEP OPERATIONS in them!
@@ -144,7 +140,7 @@
 		statclick = new/obj/effect/statclick/debug("Initializing...", src)
 
 	if(can_fire)
-		msg = "[round(cost,1)]ms|[round(tick_usage,1)]%|[round(ticks,0.1)]\t[msg]"
+		msg = "[round(cost*ticks,1)]ms|[round(tick_usage,1)]%|[round(ticks,0.1)]\t[msg]"
 	else
 		msg = "OFFLINE\t[msg]"
 
@@ -161,12 +157,7 @@
 /datum/subsystem/proc/Recover()
 
 //this is so the subsystem doesn't rapid fire to make up missed ticks causing more lag
-/datum/subsystem/vv_edit_var(var_name, var_value)
-	switch (var_name)
-		if ("can_fire")
-			if (var_value)
-				next_fire = world.time + wait
-		if ("queued_priority") //editing this breaks things.
-			return 0
-	. = ..()
-
+/datum/subsystem/on_varedit(edited_var)
+	if (edited_var == "can_fire" && can_fire)
+		next_fire = world.time + wait
+	..()