deterministic explosion system (#13392)

* wae explosions

* okay

* changes

* fixes

* fix

* ok

* ok

* kills more dead code

* okay

* fix

* ok

* tiles

* ok

* okay

* woops

* ok

* fix

* okay

* mob damage

* fixes

* insanity

* more

* more

* fixes

* more

* woot

* don't commit that

* YES

* fix

code/modules/mob/living/brain/brain.dm

@@ -46,6 +46,9 @@
 /mob/living/brain/ex_act() //you cant blow up brainmobs because it makes transfer_to() freak out when borgs blow up.
 	return
 
+/mob/living/brain/wave_ex_act(power, datum/wave_explosion/explosion, dir)
+	return power
+
 /mob/living/brain/blob_act(obj/structure/blob/B)
 	return