Replaces ex_act and emp_act numbers with defines

code/modules/mob/living/simple_animal/guardian/types/explosive.dm

@@ -76,7 +76,7 @@
 			stored_obj.forceMove(T)
 			playsound(T,'sound/effects/explosion2.ogg', 200, 1)
 			new /obj/effect/temp_visual/explosion(T)
-			user.ex_act(2)
+			user.ex_act(EXPLODE_HEAVY)
 			qdel(src)
 		else
 			to_chat(user, "<span class='holoparasite'>[src] glows with a strange <font color=\"[spawner.namedatum.colour]\">light</font>, and you don't touch it.</span>")

code/modules/mob/living/simple_animal/hostile/megafauna/bubblegum.dm

@@ -176,7 +176,7 @@ Difficulty: Hard
 /mob/living/simple_animal/hostile/megafauna/bubblegum/Bump(atom/A)
 	if(charging)
 		if(isturf(A) || isobj(A) && A.density)
-			A.ex_act(2)
+			A.ex_act(EXPLODE_HEAVY)
 		DestroySurroundings()
 	..()
 

code/modules/mob/living/simple_animal/hostile/megafauna/colossus.dm

@@ -254,7 +254,7 @@ Difficulty: Very Hard
 /obj/item/projectile/colossus/on_hit(atom/target, blocked = FALSE)
 	. = ..()
 	if(isturf(target) || isobj(target))
-		target.ex_act(2)
+		target.ex_act(EXPLODE_HEAVY)
 
 
 /obj/item/device/gps/internal/colossus