Merge pull request #13375 from timothyteakettle/emp-rework

the emp rework (emp severity reduces as you move from epicentre, severity is 1-100)

code/modules/atmospherics/machinery/portable/pump.dm

@@ -63,9 +63,9 @@
 	if(. & EMP_PROTECT_SELF)
 		return
 	if(is_operational())
-		if(prob(50 / severity))
+		if(prob(severity/2))
 			on = !on
-		if(prob(100 / severity))
+		if(prob(severity))
 			direction = PUMP_OUT
 		pump.target_pressure = rand(0, 100 * ONE_ATMOSPHERE)
 		update_icon()
@@ -80,7 +80,6 @@
 		else if(on && holding && direction == PUMP_OUT)
 			investigate_log("[key_name(user)] started a transfer into [holding].", INVESTIGATE_ATMOS)
 
-
 /obj/machinery/portable_atmospherics/pump/ui_interact(mob/user, datum/tgui/ui)
 	ui = SStgui.try_update_ui(user, src, ui)
 	if(!ui)

code/modules/atmospherics/machinery/portable/scrubber.dm

@@ -58,7 +58,7 @@
 	if(. & EMP_PROTECT_SELF)
 		return
 	if(is_operational())
-		if(prob(50 / severity))
+		if(prob(severity/3))
 			on = !on
 		update_icon()