Merge pull request #13375 from timothyteakettle/emp-rework

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

code/game/mecha/mecha_control_console.dm

@@ -131,7 +131,7 @@
 	if(recharging)
 		return
 	if(chassis)
-		chassis.emp_act(EMP_HEAVY)
+		chassis.emp_act(80)
 		addtimer(CALLBACK(src, /obj/item/mecha_parts/mecha_tracking/proc/recharge), 5 SECONDS, TIMER_UNIQUE | TIMER_OVERRIDE)
 		recharging = TRUE
 

code/game/mecha/mecha_defense.dm

@@ -140,8 +140,8 @@
 	if (. & EMP_PROTECT_SELF)
 		return
 	if(get_charge())
-		use_power((cell.charge/3)/(severity*2))
-		take_damage(30 / severity, BURN, "energy", 1)
+		use_power(cell.charge*severity/100)
+		take_damage(severity/3, BURN, "energy", 1)
 	mecha_log_message("EMP detected", color="red")
 
 	if(istype(src, /obj/mecha/combat))
@@ -309,7 +309,7 @@
 		clearInternalDamage(MECHA_INT_CONTROL_LOST)
 
 /obj/mecha/narsie_act()
-	emp_act(EMP_HEAVY)
+	emp_act(100)
 
 /obj/mecha/ratvar_act()
 	if((GLOB.ratvar_awakens || GLOB.clockwork_gateway_activated) && occupant)