Replaces ex_act and emp_act numbers with defines

code/modules/events/communications_blackout.dm

@@ -23,4 +23,4 @@
 
 /datum/round_event/communications_blackout/start()
 	for(var/obj/machinery/telecomms/T in GLOB.telecomms_list)
-		T.emp_act(1)
+		T.emp_act(EMP_HEAVY)

code/modules/events/immovable_rod.dm

@@ -80,7 +80,7 @@ In my current plan for it, 'solid' will be defined as anything with density == 1
 
 	if(isturf(clong) || isobj(clong))
 		if(clong.density)
-			clong.ex_act(2)
+			clong.ex_act(EXPLODE_HEAVY)
 
 	else if(isliving(clong))
 		penetrate(clong)
@@ -100,4 +100,4 @@ In my current plan for it, 'solid' will be defined as anything with density == 1
 		var/mob/living/carbon/human/H = L
 		H.adjustBruteLoss(160)
 	if(L && (L.density || prob(10)))
-		L.ex_act(2)
+		L.ex_act(EXPLODE_HEAVY)

code/modules/events/processor_overload.dm

@@ -35,6 +35,6 @@
 				explosion(get_turf(P), 0, 0, 2)
 				// Only a level 1 explosion actually damages the machine
 				// at all
-				P.ex_act(1)
+				P.ex_act(EXPLODE_DEVASTATE)
 			else
-				P.emp_act(1)
+				P.emp_act(EMP_HEAVY)