Process procs now properly utilize deltatime when implementing rates, timers and probabilities (#52981)

* Process procs now properly use deltatime when implementing rates, timers and probabilities

* Review fixes

* Geiger counters cleanup

Made hardsuit geiger code more similar to geiger counter code
Geiger counters are more responsive now

* Moved SS*_DT defines to subsystems.dm

* Rebase fix

* Redefined the SS*_DT defines to use the subsystem wait vars

* Implemented suggested changes by @AnturK

* Commented /datum/proc/process about the deltatime stuff

* Send delta_time as a process parameter instead of the defines

Also DTfied acid_processing

* Dtfied new acid component

code/game/objects/items/tools/weldingtool.dm

@@ -1,4 +1,5 @@
-#define WELDER_FUEL_BURN_INTERVAL 13
+/// How many seconds between each fuel depletion tick ("use" proc)
+#define WELDER_FUEL_BURN_INTERVAL 26
 /obj/item/weldingtool
 	name = "welding tool"
 	desc = "A standard edition welder provided by Nanotrasen."
@@ -70,7 +71,7 @@
 		. += "[initial(icon_state)]-on"
 
 
-/obj/item/weldingtool/process()
+/obj/item/weldingtool/process(delta_time)
 	switch(welding)
 		if(0)
 			force = 3
@@ -83,7 +84,7 @@
 		if(1)
 			force = 15
 			damtype = BURN
-			++burned_fuel_for
+			burned_fuel_for += delta_time
 			if(burned_fuel_for >= WELDER_FUEL_BURN_INTERVAL)
 				use(1)
 			update_icon()
@@ -188,8 +189,9 @@
 	if(!isOn() || !check_fuel())
 		return FALSE
 
-	if(used)
+	if(used > 0)
 		burned_fuel_for = 0
+
 	if(get_fuel() >= used)
 		reagents.remove_reagent(/datum/reagent/fuel, used)
 		check_fuel()