Supermatter eats the closed turf it's inside.

Because /turf/closed doesn't respect atmos and an SM engine in a plasmafire unharmed because it's inside a turf is questionable.

code/modules/power/supermatter/supermatter.dm

@@ -295,6 +295,16 @@ GLOBAL_DATUM(main_supermatter_engine, /obj/machinery/power/supermatter_crystal)
 			E.energy = power
 		qdel(src)
 
+/obj/machinery/power/supermatter_crystal/proc/consume_turf(turf/T)
+	var/oldtype = T.type
+	var/turf/newT = T.ScrapeAway()
+	if(newT.type == oldtype)
+		return
+	playsound(T, 'sound/effects/supermatter.ogg', 50, 1)
+	T.visible_message("<span class='danger'>[T] smacks into [src] and rapidly flashes to ash.</span>",\
+	"<span class='italics'>You hear a loud crack as you are washed with a wave of heat.</span>")
+	T.CalculateAdjacentTurfs()
+
 /obj/machinery/power/supermatter_crystal/process_atmos()
 	var/turf/T = loc
 
@@ -303,6 +313,8 @@ GLOBAL_DATUM(main_supermatter_engine, /obj/machinery/power/supermatter_crystal)
 
 	if(!istype(T)) 	//We are in a crate or somewhere that isn't turf, if we return to turf resume processing but for now.
 		return  //Yeah just stop.
+	if(istype(T, /turf/closed))
+		consume_turf(T)
 
 	if(power)
 		soundloop.volume = min(40, (round(power/100)/50)+1) // 5 +1 volume per 20 power. 2500 power is max