Merge pull request #4813 from Citadel-Station-13/upstream-merge-34365

[MIRROR] Fixes cables/lattices for lateloaded templates.

code/game/turfs/ChangeTurf.dm

@@ -193,6 +193,8 @@
 	newT.baseturfs = new_baseturfs
 	return newT
 
+
+//If you modify this function, ensure it works correctly with lateloaded map templates.
 /turf/proc/AfterChange(flags) //called after a turf has been replaced in ChangeTurf()
 	levelupdate()
 	CalculateAdjacentTurfs()

code/game/turfs/turf.dm

@@ -239,19 +239,19 @@
 
 /turf/proc/levelupdate()
 	for(var/obj/O in src)
-		if(O.level == 1)
+		if(O.level == 1 && O.initialized)
 			O.hide(src.intact)
 
 // override for space turfs, since they should never hide anything
 /turf/open/space/levelupdate()
 	for(var/obj/O in src)
-		if(O.level == 1)
+		if(O.level == 1 && O.initialized)
 			O.hide(0)
 
 // Removes all signs of lattice on the pos of the turf -Donkieyo
 /turf/proc/RemoveLattice()
 	var/obj/structure/lattice/L = locate(/obj/structure/lattice, src)
-	if(L)
+	if(L && L.initialized)
 		qdel(L)
 
 /turf/proc/phase_damage_creatures(damage,mob/U = null)//>Ninja Code. Hurts and knocks out creatures on this turf //NINJACODE