a few tweaks

- makes tesla bomb immune so it wont destroy itself
- makes lights spew fire when they explode instead of the regular explosion
- makes cameras with EMP immunity also have tesla immunity
tesla can now keep itself fully contained (at least on box)

code/modules/power/lighting.dm

@@ -535,6 +535,10 @@
 	else
 		flicker()
 
+/obj/machinery/light/tesla_act(var/power)
+	explosion(src.loc,0,0,0,flame_range = 5, adminlog = 0)
+	qdel(src)
+
 // called when area power state changes
 /obj/machinery/light/power_change()
 	var/area/A = get_area(src)

code/modules/power/tesla/energy_ball.dm

@@ -38,6 +38,9 @@ var/list/blacklisted_tesla_types = typecacheof(list(/obj/machinery/atmospherics,
 	var/energy_to_raise = 32
 	var/energy_to_lower = -20
 
+/obj/singularity/energy_ball/ex_act(severity, target)
+	return
+
 /obj/singularity/energy_ball/Destroy()
 	if(orbiting && istype(orbiting, /obj/singularity/energy_ball))
 		var/obj/singularity/energy_ball/EB = orbiting