Areas can have their own base turf type (#10765)

code/datums/shuttle.dm

@@ -674,7 +674,7 @@
 		turfs_to_update += new_turf
 
 		//Delete the old turf
-		var/replacing_turf_type = get_base_turf(old_turf.z)
+		var/replacing_turf_type = old_turf.get_underlying_turf()
 		var/obj/docking_port/destination/D = linked_port.docked_with
 
 		if(D && istype(D)) replacing_turf_type = D.base_turf_type

code/game/area/areas.dm

@@ -10,6 +10,8 @@
 	var/turret_protected = 0
 	var/list/turretTargets = list()
 
+	var/base_turf_type = null
+
 /area/New()
 	area_turfs = list()
 	icon_state = ""

code/game/turfs/simulated/floor.dm

@@ -66,7 +66,7 @@ var/image/list/w_overlays = list("wet" = image('icons/effects/water.dmi',icon_st
 	//set src in oview(1)
 	switch(severity)
 		if(1.0)
-			src.ChangeTurf(get_base_turf(src.z))
+			src.ChangeTurf(get_underlying_turf())
 		if(2.0)
 			switch(pick(1,2;75,3))
 				if (1)
@@ -75,7 +75,7 @@ var/image/list/w_overlays = list("wet" = image('icons/effects/water.dmi',icon_st
 						var/obj/item/stack/sheet/metal/M = getFromPool(/obj/item/stack/sheet/metal, get_turf(src))
 						M.amount = 1
 				if(2)
-					src.ChangeTurf(get_base_turf(src.z))
+					src.ChangeTurf(get_underlying_turf())
 				if(3)
 					if(prob(80))
 						src.break_tile_to_plating()

code/game/turfs/simulated/floor_types.dm

@@ -126,7 +126,7 @@
 			if(prob(80))
 				src.ReplaceWithLattice()
 			else if(prob(50))
-				src.ChangeTurf(get_base_turf(src.z))
+				src.ChangeTurf(get_underlying_turf())
 			else
 				var/turf/simulated/floor/F = src
 				F.make_plating()

code/game/turfs/simulated/walls.dm

@@ -61,7 +61,7 @@
 		severity = 1.0
 	switch(severity)
 		if(1.0)
-			src.ChangeTurf(get_base_turf(src.z)) //You get NOTHING, you LOSE
+			src.ChangeTurf(get_underlying_turf()) //You get NOTHING, you LOSE
 			return
 		if(2.0)
 			if(prob(50))

code/game/turfs/turf.dm

@@ -503,8 +503,15 @@
 				S.air.update_values()
 */
 
+/turf/proc/get_underlying_turf()
+	var/area/A = loc
+	if(A.base_turf_type)
+		return A.base_turf_type
+
+	return get_base_turf(z)
+
 /turf/proc/ReplaceWithLattice()
-	src.ChangeTurf(get_base_turf(src.z))
+	src.ChangeTurf(get_underlying_turf())
 	if(istype(src, /turf/space))
 		new /obj/structure/lattice(src)
 
@@ -623,7 +630,7 @@
 
 
 /turf/proc/cultify()
-	if(istype(src, get_base_turf(src.z))) //Don't cultify the base turf, ever
+	if(istype(src, get_underlying_turf())) //Don't cultify the base turf, ever
 		return
 	ChangeTurf(get_base_turf(src.z))
 
@@ -631,7 +638,7 @@
 	return PROJREACT_WALLS
 
 /turf/singularity_act()
-	if(istype(src, get_base_turf(src.z))) //Don't singulo the base turf, ever
+	if(istype(src, get_underlying_turf())) //Don't singulo the base turf, ever
 		return
 	if(intact)
 		for(var/obj/O in contents)
@@ -639,7 +646,7 @@
 				continue
 			if(O.invisibility == 101)
 				O.singularity_act()
-	ChangeTurf(get_base_turf(src.z))
+	ChangeTurf(get_underlying_turf())
 	return(2)
 
 //Return a lattice to allow catwalk building

code/modules/RCD/schematics/engi.dm

@@ -31,7 +31,7 @@
 				return 1
 
 			playsound(get_turf(master), 'sound/items/Deconstruct.ogg', 50, 1)
-			T.ChangeTurf(get_base_turf(T.z))
+			T.ChangeTurf(T.get_underlying_turf())
 			return 0
 
 	else if(istype(A, /obj/machinery/door/airlock))

code/modules/admin/verbs/randomverbs.dm

@@ -642,7 +642,7 @@ Traitors and the like can also be revived with the previous role mostly intact.
 		feedback_add_details("admin_verb","DEL") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!
 		if(istype(O,/turf))
 			var/turf/T=O
-			T.ChangeTurf(get_base_turf(T.z))
+			T.ChangeTurf(T.get_underlying_turf())
 		else
 			qdel(O)
 

code/modules/bomberman/bomberman.dm

@@ -1246,7 +1246,7 @@ var/global/list/arena_spawnpoints = list()//used by /mob/dead/observer/Logout()
 		for(var/atom/movable/AM in T)
 			AM.areaMaster = get_area_master(T)
 		if(open_space && (under.name == "Space"))
-			T.ChangeTurf(get_base_turf(T.z))
+			T.ChangeTurf(T.get_underlying_turf())
 		else
 			T.ChangeTurf(/turf/simulated/floor/plating)
 		T.maptext = null

code/modules/power/engine.dm

@@ -7,6 +7,6 @@
 
 /turf/simulated/floor/engine/blob_act()
 	if(prob(25))
-		ChangeTurf(get_base_turf(src.z))
+		ChangeTurf(get_underlying_turf())
 		return
 	return

maps/RandomZLevels/tomb.dm

@@ -10,11 +10,22 @@
 
 //Optional area: Tower of Madness. Contains many mummy priests and faithless, in the end there's an altar. Praying at the altar will cause you to completely lose your mind and gain many superpowers.
 
-/area/awaymission/tomb/expedition_camp
+
+/area/awaymission/tomb/outside
+	name = "desert"
+	base_turf_type = /turf/unsimulated/beach/sand
+	dynamic_lighting = 0
+
+/area/awaymission/tomb/outside/expedition_camp
 	name = "expedition camp"
 
-/area/awaymission/tomb/pyramid_outside
+/area/awaymission/tomb/outside/pyramid_outside
 	name = "great pyramid"
+	dynamic_lighting = 1
+
+
+/area/awaymission/tomb
+	base_turf_type = /turf/unsimulated/floor/asteroid/air
 
 /area/awaymission/tomb/tomb_of_rafid
 	name = "Tomb of Rafid"