Replaces ex_act and emp_act numbers with defines

code/modules/projectiles/projectile/beams.dm

@@ -75,7 +75,7 @@
 /obj/item/projectile/beam/pulse/on_hit(atom/target, blocked = FALSE)
 	. = ..()
 	if(isturf(target) || istype(target,/obj/structure/))
-		target.ex_act(2)
+		target.ex_act(EXPLODE_HEAVY)
 
 /obj/item/projectile/beam/pulse/shot
 	damage = 40

code/modules/projectiles/projectile/special.dm

@@ -114,7 +114,7 @@
 	if(A == firer)
 		loc = A.loc
 		return
-	A.ex_act(2)
+	A.ex_act(EXPLODE_HEAVY)
 	playsound(src.loc, 'sound/effects/meteorimpact.ogg', 40, 1)
 	for(var/mob/M in urange(10, src))
 		if(!M.stat)