Replaces ex_act and emp_act numbers with defines

code/game/mecha/equipment/tools/mining_tools.dm

@@ -35,7 +35,7 @@
 				else
 					drill_mob(target, chassis.occupant)
 			else
-				target.ex_act(2)
+				target.ex_act(EXPLODE_HEAVY)
 
 /turf/proc/drill_act(obj/item/mecha_parts/mecha_equipment/drill/drill)
 	return
@@ -44,7 +44,7 @@
 	if(istype(drill, /obj/item/mecha_parts/mecha_equipment/drill/diamonddrill))
 		if(drill.do_after_cooldown(src))//To slow down how fast mechs can drill through the station
 			drill.log_message("Drilled through [src]")
-			ex_act(3)
+			ex_act(EXPLODE_LIGHT)
 	else
 		drill.occupant_message("<span class='danger'>[src] is too durable to drill through.</span>")
 

code/game/mecha/mecha_control_console.dm

@@ -106,7 +106,7 @@
 /obj/item/mecha_parts/mecha_tracking/proc/shock()
 	var/obj/mecha/M = in_mecha()
 	if(M)
-		M.emp_act(2)
+		M.emp_act(EMP_LIGHT)
 	qdel(src)
 
 /obj/item/mecha_parts/mecha_tracking/proc/get_mecha_log()