Runechat (#8121)

* Message piece combiner returns a list

* Emote formatter returns a list

* Port Runechat

* Various onamonapoea

* Suggested changes, small opts

* Fix chat message on different size mobs

* Couple more runefixes

* Enable encoding chat emphasis in runechat

* Remove extra asterisks from rune audible messages

* Fix runedefines

code/modules/ventcrawl/ventcrawl_atmospherics.dm

@@ -42,7 +42,16 @@
 			user.client.eye = target_move //if we don't do this, Byond only updates the eye every tick - required for smooth movement
 			if(world.time > user.next_play_vent)
 				user.next_play_vent = world.time+30
-				playsound(src, 'sound/machines/ventcrawl.ogg', 50, 1, -3)
+				var/turf/T = get_turf(src)
+				playsound(T, 'sound/machines/ventcrawl.ogg', 50, 1, -3)
+				var/message = pick(
+					prob(90);"* clunk *",
+					prob(90);"* thud *",
+					prob(90);"* clatter *",
+					prob(1);"* <span style='font-size:2em'>ඞ</span> *"
+				)
+				T.runechat_message(message)
+				
 	else
 		if((direction & initialize_directions) || is_type_in_list(src, ventcrawl_machinery) && src.can_crawl_through()) //if we move in a way the pipe can connect, but doesn't - or we're in a vent
 			user.remove_ventcrawl()