Multi-Z.

baystation12.dme

@@ -1410,6 +1410,8 @@
 #include "code\modules\mob\new_player\preferences_setup.dm"
 #include "code\modules\mob\new_player\skill.dm"
 #include "code\modules\mob\new_player\sprite_accessories.dm"
+#include "code\modules\multiz\basic.dm"
+#include "code\modules\multiz\stubs.dm"
 #include "code\modules\nano\_JSON.dm"
 #include "code\modules\nano\JSON Reader.dm"
 #include "code\modules\nano\JSON Writer.dm"
@@ -1783,8 +1785,6 @@
 #include "code\modules\virus2\items_devices.dm"
 #include "code\modules\xgm\xgm_gas_data.dm"
 #include "code\modules\xgm\xgm_gas_mixture.dm"
-#include "code\TriDimension\controller.dm"
-#include "code\TriDimension\controller_presets.dm"
 #include "code\TriDimension\Movement.dm"
 #include "code\TriDimension\Pipes.dm"
 #include "code\TriDimension\Structures.dm"

code/TriDimension/Movement.dm

@@ -1,52 +1,51 @@
 /obj/item/weapon/tank/jetpack/verb/moveup()
 	set name = "Move Upwards"
 	set category = "Object"
+
+	. = 1
 	if(allow_thrust(0.01, usr))
-		var/turf/controllerlocation = locate(1, 1, usr.z)
-		var/legal = 0
-		for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-			legal = controller.up
-			if (controller.up)
-				var/turf/T = locate(usr.x, usr.y, controller.up_target)
-				if(T && (istype(T, /turf/space) || istype(T, /turf/simulated/floor/open)))
-					var/blocked = 0
-					for(var/atom/A in T.contents)
+		usr << "<span class='warning'>Your [src] is disabled.</span>"
+		return
+
+	var/turf/above = GetAbove(src)
+	if(!istype(above))
+		usr << "<span class='notice'>There is nothing of interest in this direction.</span>"
+		return
+
+	if(!istype(above, /turf/space) && !istype(above, /turf/simulated/open))
+		usr << "<span class='warning'>You bump against \the [above].</span>"
+		return
+
+	for(var/atom/A in above)
 		if(A.density)
-							blocked = 1
-							usr << "<span class='warning'>You bump into \the [A].</span>"
-							break
-					if(!blocked)
-						usr.Move(T)
-						usr << "You move upwards."
-				else
-					usr << "<span class='warning'>There is something in your way.</span>"
-		if (legal == 0)
-			usr << "There is nothing of interest in this direction."
-	return 1
+			usr << "<span class='warning'>\The [A] blocks you.</span>"
+			return
+
+	usr.Move(above)
+	usr << "<span class='notice'>You move upwards.</span>"
 
 /obj/item/weapon/tank/jetpack/verb/movedown()
 	set name = "Move Downwards"
 	set category = "Object"
+
+	. = 1
 	if(allow_thrust(0.01, usr))
-		var/turf/controllerlocation = locate(1, 1, usr.z)
-		var/legal = 0
-		for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-			legal = controller.down
-			if (controller.down == 1)
-				var/turf/T = locate(usr.x, usr.y, controller.down_target)
-				var/turf/S = locate(usr.x, usr.y, usr.z)
-				if(T && (istype(S, /turf/space) || istype(S, /turf/simulated/floor/open)))
-					var/blocked = 0
-					for(var/atom/A in T.contents)
+		usr << "<span class='warning'>Your [src] is disabled.</span>"
+		return
+
+	var/turf/above = GetBelow(src)
+	if(!istype(above))
+		usr << "<span class='notice'>There is nothing of interest in this direction.</span>"
+		return
+
+	if(!istype(above, /turf/space) && !istype(above, /turf/simulated/open))
+		usr << "<span class='warning'>You bump against \the [above].</span>"
+		return
+
+	for(var/atom/A in above)
 		if(A.density)
-							blocked = 1
-							usr << "<span class='warning'>You bump into \the [A].</span>"
-							break
-					if(!blocked)
-						usr.Move(T)
-						usr << "You move downwards."
-				else
-					usr << "<span class='warning'>You cant move through the floor.</span>"
-		if (legal == 0)
-			usr << "There is nothing of interest in this direction."
-	return 1
+			usr << "<span class='warning'>\The [A] blocks you.</span>"
+			return
+
+	usr.Move(above)
+	usr << "<span class='notice'>You move upwards.</span>"

code/TriDimension/Pipes.dm

@@ -136,10 +136,7 @@ obj/machinery/atmospherics/pipe/zpipe/up/initialize()
 				node1 = target
 				break
 
-	var/turf/controllerlocation = locate(1, 1, src.z)
-	for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-		if(controller.up)
-			var/turf/above = locate(src.x, src.y, controller.up_target)
+	var/turf/above = GetAbove(src)
 	if(above)
 		for(var/obj/machinery/atmospherics/target in above)
 			if(target.initialize_directions && istype(target, /obj/machinery/atmospherics/pipe/zpipe/down))
@@ -177,10 +174,7 @@ obj/machinery/atmospherics/pipe/zpipe/down/initialize()
 				node1 = target
 				break
 
-	var/turf/controllerlocation = locate(1, 1, src.z)
-	for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-		if(controller.down)
-			var/turf/below = locate(src.x, src.y, controller.down_target)
+	var/turf/below = GetBelow(src)
 	if(below)
 		for(var/obj/machinery/atmospherics/target in below)
 			if(target.initialize_directions && istype(target, /obj/machinery/atmospherics/pipe/zpipe/up))

code/TriDimension/Structures.dm

@@ -25,16 +25,11 @@
 	proc/connect()
 		if(icon_state == "ladderdown") // the upper will connect to the lower
 			d_state = 1
-			var/turf/controllerlocation = locate(1, 1, z)
-			for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-				if(controller.down)
-					var/turf/below = locate(src.x, src.y, controller.down_target)
-					for(var/obj/multiz/ladder/L in below)
+			for(var/obj/multiz/ladder/L in GetBelow(src))
 				if(L.icon_state == "ladderup")
 					target = L
 					L.target = src
 					d_state = 0
-							break
 					return
 
 /*	ex_act(severity)
@@ -210,12 +205,9 @@
 
 	New()
 		..()
-		var/turf/cl= locate(1, 1, src.z)
-		for(var/obj/effect/landmark/zcontroller/c in cl)
-			if(c.up)
-				var/turf/O = locate(src.x, src.y, c.up_target)
-				if(istype(O, /turf/space))
-					O.ChangeTurf(/turf/simulated/floor/open)
+		var/turf/above = GetAbove(src)
+		if(istype(above, /turf/space))
+			above.ChangeTurf(/turf/simulated/open)
 
 		spawn(1)
 			var/turf/T
@@ -262,13 +254,10 @@
 		bottom.connected = top
 		top.icon_state = "ramptop"
 		top.density = 1
-		var/turf/controllerlocation = locate(1, 1, top.z)
-		for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-			if(controller.up)
-				var/turf/above = locate(top.x, top.y, controller.up_target)
-				if(istype(above,/turf/space) || istype(above,/turf/simulated/floor/open))
+		var/turf/above = GetAbove(top)
+		if(istype(above,/turf/space) || istype(above,/turf/simulated/open))
 			top.target = above
-				var/turf/above2 = locate(bottom.x, bottom.y, controller.up_target)
-				if(istype(above2, /turf/space) || istype(above,/turf/simulated/floor/open))
-					top.target2 = above2
+		above = GetAbove(bottom)
+		if(istype(above, /turf/space) || istype(above,/turf/simulated/open))
+			top.target2 = above
 		return

code/TriDimension/Turfs.dm

@@ -1,114 +1,100 @@
-/turf/simulated/floor/open
+/turf/simulated/open
 	name = "open space"
 	density = 0
+	alpha = 0
 	icon_state = "black"
 	pathweight = 100000 //Seriously, don't try and path over this one numbnuts
-	var/icon/darkoverlays = null
-	var/turf/floorbelow
+	var/icon/darkoverlays
+	var/turf/below
 	var/list/overlay_references
 
 	New()
 		..()
-		getbelow()
+		// Unhide shit.
+		for(var/obj/obj in src)
+			if(obj.level == 1)
+				obj.hide(0)
+
+		ASSERT(HasBelow(z))
+		below = GetBelow(src)
 		return
 
-	Enter(var/atom/movable/AM)
-		if (..()) //TODO make this check if gravity is active (future use) - Sukasa
-			spawn(1)
+	Entered(var/atom/movable/mover)
 		// only fall down in defined areas (read: areas with artificial gravitiy)
-				if(!floorbelow) //make sure that there is actually something below
-					if(!getbelow())
+		if(!istype(below)) //make sure that there is actually something below
+			below = GetBelow(src)
+			if(!below)
 				return
-				if(AM)
-					var/area/areacheck = get_area(src)
-					var/blocked = 0
+
+		// No gravity in space, apparently.
+		var/area/area = get_area(src)
+		if(area.name == "Space")
+			return
+
+		// Prevent pipes from falling into the void... if there is a pipe to support it.
+		if(istype(mover, /obj/item/pipe) && \
+			(locate(/obj/structure/disposalpipe/up) in below) || \
+			 locate(/obj/machinery/atmospherics/pipe/zpipe/up in below))
+			return
+
+		// See if something prevents us from falling.
 		var/soft = 0
-					for(var/atom/A in floorbelow.contents)
+		for(var/atom/A in below)
 			if(A.density)
-							if(istype(A, /obj/structure/window))
-								var/obj/structure/window/W = A
-								blocked = W.is_fulltile()
-								if(blocked)
-									break
+				if(!istype(A, /obj/structure/window))
+					return
 				else
-								blocked = 1
-								break
-						if(istype(A, /obj/machinery/atmospherics/pipe/zpipe/up) && istype(AM,/obj/item/pipe))
-							blocked = 1
-							break
-						if(istype(A, /obj/structure/disposalpipe/up) && istype(AM,/obj/item/pipe))
-							blocked = 1
-							break
+					var/obj/structure/window/W = A
+					if(W.is_fulltile())
+						return
+			// Dont break here, since we still need to be sure that it isnt blocked
 			if(istype(A, /obj/multiz/stairs))
 				soft = 1
-							//dont break here, since we still need to be sure that it isnt blocked
 
-					if (soft || (!blocked && !(areacheck.name == "Space")))
-						AM.Move(floorbelow)
-						if (!soft && istype(AM, /mob/living/carbon/human))
-							var/mob/living/carbon/human/H = AM
-							var/damage = 5
-							H.apply_damage(min(rand(-damage,damage),0), BRUTE, "head")
-							H.apply_damage(min(rand(-damage,damage),0), BRUTE, "chest")
-							H.apply_damage(min(rand(-damage,damage),0), BRUTE, "l_leg")
-							H.apply_damage(min(rand(-damage,damage),0), BRUTE, "r_leg")
-							H.apply_damage(min(rand(-damage,damage),0), BRUTE, "l_arm")
-							H.apply_damage(min(rand(-damage,damage),0), BRUTE, "r_arm")
-							H:weakened = max(H:weakened,2)
-							H:updatehealth()
-		return ..()
+		// We've made sure we can move, now.
+		mover.Move(below)
 
-/turf/proc/hasbelow()
-	var/turf/controllerlocation = locate(1, 1, z)
-	for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-		if(controller.down)
-			return 1
-	return 0
-
-/turf/simulated/floor/open/proc/getbelow()
-	var/turf/controllerlocation = locate(1, 1, z)
-	for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-		// check if there is something to draw below
-		if(!controller.down)
-			src.ChangeTurf(get_base_turf(src.z))
-			return 0
+		if(!soft)
+			if(!istype(mover, /mob))
+				if(istype(below, /turf/simulated/open))
+					below.visible_message("\The [mover] falls from the deck above through \the [below]!", "You hear a whoosh of displaced air.")
 				else
-			floorbelow = locate(src.x, src.y, controller.down_target)
-			return 1
-	return 1
+					below.visible_message("\The [mover] falls from the deck above and slams into \the [below]!", "You hear something slam into the deck.")
+			else
+				var/mob/M = mover
+				if(istype(below, /turf/simulated/open))
+					below.visible_message("\The [mover] falls from the deck above through \the [below]!", "You hear a soft whoosh.[M.stat ? "" : ".. and some screaming."]")
+				else
+					M.visible_message("\The [mover] falls from the deck above and slams into \the [below]!", "You land on \the [below].", "You hear a soft whoosh and a crunch")
+
+				// Handle people getting hurt, it's funny!
+				if (istype(mover, /mob/living/carbon/human))
+					var/mob/living/carbon/human/H = mover
+					var/damage = 5
+					H.apply_damage(rand(0, damage), BRUTE, "head")
+					H.apply_damage(rand(0, damage), BRUTE, "chest")
+					H.apply_damage(rand(0, damage), BRUTE, "l_leg")
+					H.apply_damage(rand(0, damage), BRUTE, "r_leg")
+					H.apply_damage(rand(0, damage), BRUTE, "l_arm")
+					H.apply_damage(rand(0, damage), BRUTE, "r_arm")
+					H.weakened = max(H.weakened,2)
+					H.updatehealth()
 
 // override to make sure nothing is hidden
-/turf/simulated/floor/open/levelupdate()
+/turf/simulated/open/levelupdate()
 	for(var/obj/O in src)
 		O.hide(0)
 
-//overwrite the attackby of space to transform it to openspace if necessary
-/turf/space/attackby(obj/item/C as obj, mob/user as mob)
-	if (istype(C, /obj/item/stack/cable_coil) && src.hasbelow())
-		var/turf/simulated/floor/open/W = src.ChangeTurf(/turf/simulated/floor/open)
-		W.attackby(C, user)
-		return
-	..()
-
-/turf/simulated/floor/open/ex_act(severity)
-	// cant destroy empty space with an ordinary bomb
-	return
-
-/turf/simulated/floor/open/attackby(obj/item/C as obj, mob/user as mob)
-	(..)
-	if (istype(C, /obj/item/stack/cable_coil))
-		var/obj/item/stack/cable_coil/cable = C
-		cable.turf_place(src, user)
-		return
-
+// Straight copy from space.
+/turf/simulated/open/attackby(obj/item/C as obj, mob/user as mob)
 	if (istype(C, /obj/item/stack/rods))
 		var/obj/structure/lattice/L = locate(/obj/structure/lattice, src)
 		if(L)
 			return
 		var/obj/item/stack/rods/R = C
 		if (R.use(1))
-			user << "<span class='notice'>Constructing support lattice...</span>"
-			playsound(src.loc, 'sound/weapons/Genhit.ogg', 50, 1)
+			user << "<span class='notice'>Constructing support lattice ...</span>"
+			playsound(src, 'sound/weapons/Genhit.ogg', 50, 1)
 			ReplaceWithLattice()
 		return
 
@@ -119,7 +105,7 @@
 			if (S.get_amount() < 1)
 				return
 			qdel(L)
-			playsound(src.loc, 'sound/weapons/Genhit.ogg', 50, 1)
+			playsound(src, 'sound/weapons/Genhit.ogg', 50, 1)
 			S.use(1)
 			ChangeTurf(/turf/simulated/floor/airless)
 			return

code/TriDimension/controller.dm

@@ -119,10 +119,10 @@ atom/movable/Move() //Hackish
 		T.overlays -= T.z_overlays
 		T.z_overlays -= T.z_overlays
 
-		if(down && (istype(T, /turf/space) || istype(T, /turf/simulated/floor/open)))
+		if(down && (istype(T, /turf/space) || istype(T, /turf/simulated/open)))
 			var/turf/below = locate(T.x, T.y, down_target)
 			if(below)
-				if(!(istype(below, /turf/space) || istype(below, /turf/simulated/floor/open)))
+				if(!(istype(below, /turf/space) || istype(below, /turf/simulated/open)))
 					var/image/t_img = list()
 					new_list = 1
 

code/ZAS/Atom.dm

@@ -64,9 +64,9 @@ turf/c_airblock(turf/other)
 	#ifdef ZLEVELS
 	if(other.z != src.z)
 		if(other.z < src.z)
-			if(!istype(src, /turf/simulated/floor/open)) return BLOCKED
+			if(!istype(src, /turf/simulated/open)) return BLOCKED
 		else
-			if(!istype(other, /turf/simulated/floor/open)) return BLOCKED
+			if(!istype(other, /turf/simulated/open)) return BLOCKED
 	#endif
 
 	var/result = 0

code/game/objects/explosion.dm

@@ -1,8 +1,6 @@
 //TODO: Flash range does nothing currently
 
-///// Z-Level Stuff
-proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range, adminlog = 1, z_transfer = 1)
-///// Z-Level Stuff
+proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range, adminlog = 1, z_transfer = UP|DOWN)
 	src = null	//so we don't abort once src is deleted
 	spawn(0)
 		if(config.use_recursive_explosions)
@@ -14,23 +12,19 @@ proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impa
 		epicenter = get_turf(epicenter)
 		if(!epicenter) return
 
-///// Z-Level Stuff
-		if(z_transfer && (devastation_range > 0 || heavy_impact_range > 0))
-			//transfer the explosion in both directions
-			explosion_z_transfer(epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range)
-///// Z-Level Stuff
+		// Handles recursive propagation of explosions.
+		if(devastation_range > 2 || heavy_impact_range > 2)
+			if(HasAbove(epicenter.z) && z_transfer & UP)
+				explosion(GetAbove(epicenter), max(0, devastation_range - 2), max(0, heavy_impact_range - 2), max(0, light_impact_range - 2), max(0, flash_range - 2), 0, UP)
+			if(HasBelow(epicenter.z) && z_transfer & DOWN)
+				explosion(GetAbove(epicenter), max(0, devastation_range - 2), max(0, heavy_impact_range - 2), max(0, light_impact_range - 2), max(0, flash_range - 2), 0, DOWN)
 
 		var/max_range = max(devastation_range, heavy_impact_range, light_impact_range, flash_range)
-		//playsound(epicenter, 'sound/effects/explosionfar.ogg', 100, 1, round(devastation_range*2,1) )
-		//playsound(epicenter, "explosion", 100, 1, round(devastation_range,1) )
 
-// Play sounds; we want sounds to be different depending on distance so we will manually do it ourselves.
-
-// Stereo users will also hear the direction of the explosion!
-
-// Calculate far explosion sound range. Only allow the sound effect for heavy/devastating explosions.
-
-// 3/7/14 will calculate to 80 + 35
+		// Play sounds; we want sounds to be different depending on distance so we will manually do it ourselves.
+		// Stereo users will also hear the direction of the explosion!
+		// Calculate far explosion sound range. Only allow the sound effect for heavy/devastating explosions.
+		// 3/7/14 will calculate to 80 + 35
 		var/far_dist = 0
 		far_dist += heavy_impact_range * 5
 		far_dist += devastation_range * 20
@@ -62,10 +56,6 @@ proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impa
 			message_admins("Explosion with size ([devastation_range], [heavy_impact_range], [light_impact_range]) in area [epicenter.loc.name] ([epicenter.x],[epicenter.y],[epicenter.z]) (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[epicenter.x];Y=[epicenter.y];Z=[epicenter.z]'>JMP</a>)")
 			log_game("Explosion with size ([devastation_range], [heavy_impact_range], [light_impact_range]) in area [epicenter.loc.name] ")
 
-//		var/lighting_controller_was_processing = lighting_controller.processing	//Pause the lighting updates for a bit
-//		lighting_controller.processing = 0
-
-
 		var/approximate_intensity = (devastation_range * 3) + (heavy_impact_range * 2) + light_impact_range
 		var/powernet_rebuild_was_deferred_already = defer_powernet_rebuild
 		// Large enough explosion. For performance reasons, powernets will be rebuilt manually
@@ -107,7 +97,6 @@ proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impa
 
 		sleep(8)
 
-//		if(!lighting_controller.processing)	lighting_controller.processing = lighting_controller_was_processing
 		if(!powernet_rebuild_was_deferred_already && defer_powernet_rebuild)
 			makepowernets()
 			defer_powernet_rebuild = 0
@@ -119,20 +108,3 @@ proc/explosion(turf/epicenter, devastation_range, heavy_impact_range, light_impa
 proc/secondaryexplosion(turf/epicenter, range)
 	for(var/turf/tile in range(range, epicenter))
 		tile.ex_act(2)
-
-///// Z-Level Stuff
-proc/explosion_z_transfer(turf/epicenter, devastation_range, heavy_impact_range, light_impact_range, flash_range, up = 1, down = 1)
-	var/turf/controllerlocation = locate(1, 1, epicenter.z)
-	for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-		if(controller.down)
-			//start the child explosion, no admin log and no additional transfers
-			explosion(locate(epicenter.x, epicenter.y, controller.down_target), max(devastation_range - 2, 0), max(heavy_impact_range - 2, 0), max(light_impact_range - 2, 0), max(flash_range - 2, 0), 0, 0)
-			if(devastation_range - 2 > 0 || heavy_impact_range - 2 > 0) //only transfer further if the explosion is still big enough
-				explosion(locate(epicenter.x, epicenter.y, controller.down_target), max(devastation_range - 2, 0), max(heavy_impact_range - 2, 0), max(light_impact_range - 2, 0), max(flash_range - 2, 0), 0, 1)
-
-		if(controller.up)
-			//start the child explosion, no admin log and no additional transfers
-			explosion(locate(epicenter.x, epicenter.y, controller.up_target), max(devastation_range - 2, 0), max(heavy_impact_range - 2, 0), max(light_impact_range - 2, 0), max(flash_range - 2, 0), 0, 0)
-			if(devastation_range - 2 > 0 || heavy_impact_range - 2 > 0) //only transfer further if the explosion is still big enough
-				explosion(locate(epicenter.x, epicenter.y, controller.up_target), max(devastation_range - 2, 0), max(heavy_impact_range - 2, 0), max(light_impact_range - 2, 0), max(flash_range - 2, 0), 1, 0)
-///// Z-Level Stuff

code/game/objects/structures/lattice.dm

@@ -11,7 +11,7 @@
 /obj/structure/lattice/New()
 	..()
 ///// Z-Level Stuff
-	if(!(istype(src.loc, /turf/space) || istype(src.loc, /turf/simulated/floor/open)))
+	if(!(istype(src.loc, /turf/space) || istype(src.loc, /turf/simulated/open)))
 ///// Z-Level Stuff
 		qdel(src)
 	for(var/obj/structure/lattice/LAT in src.loc)

code/game/turfs/turf_changing.dm

@@ -14,19 +14,11 @@
 	if (!N)
 		return
 
-///// Z-Level Stuff ///// This makes sure that turfs are not changed to space when one side is part of a zone
+	// This makes sure that turfs are not changed to space when one side is part of a zone
 	if(N == /turf/space)
-		var/turf/controller = locate(1, 1, src.z)
-		for(var/obj/effect/landmark/zcontroller/c in controller)
-			if(c.down)
-				var/turf/below = locate(src.x, src.y, c.down_target)
-				if((air_master.has_valid_zone(below) || air_master.has_valid_zone(src)) && !istype(below, /turf/space)) // dont make open space into space, its pointless and makes people drop out of the station
-					var/turf/W = src.ChangeTurf(/turf/simulated/floor/open)
-					var/list/temp = list()
-					temp += W
-					c.add(temp,3,1) // report the new open space to the zcontroller
-					return W
-///// Z-Level Stuff
+		var/turf/below = GetBelow(src)
+		if(istype(below) && (air_master.has_valid_zone(below) || air_master.has_valid_zone(src)))
+			N = /turf/simulated/open
 
 	var/obj/fire/old_fire = fire
 	var/old_opacity = opacity
@@ -46,11 +38,11 @@
 		if(S.zone) S.zone.rebuild()
 
 	if(ispath(N, /turf/simulated/floor))
-		var/turf/simulated/floor/W = new N( locate(src.x, src.y, src.z) )
+		var/turf/simulated/W = new N( locate(src.x, src.y, src.z) )
 		if(old_fire)
 			fire = old_fire
 
-		if (istype(W))
+		if (istype(W,/turf/simulated/floor))
 			W.RemoveLattice()
 
 		if(tell_universe)

code/modules/multiz/basic.dm

@@ -0,0 +1,31 @@
+// If you add a more comprehensive system, just untick this file.
+// WARNING: Only works for up to 17 z-levels!
+var/z_levels = 0 // Each bit represents a connection between adjacent levels.  So the first bit means levels 1 and 2 are connected.
+
+// If the height is more than 1, we mark all contained levels as connected.
+/obj/effect/landmark/map_data/New()
+	for(var/i = z - 1 to height - 2)
+		z_levels |= 1 << i
+	del src
+
+HasAbove(z)
+	if(z > world.maxz || z > 17 || z < 2)
+		return 0
+	return z_levels & (1 << (z - 1))
+
+HasBelow(z)
+	if(z >= world.maxz || z > 16 || z < 1)
+		return 0
+	return z_levels & (1 << z)
+
+GetAbove(var/atom/thing)
+	var/turf/turf = get_turf(thing)
+	if(!istype(turf))
+		return null
+	return HasBelow(turf.z) ? locate(turf.z, turf.y, turf.z - 1) : null
+
+GetBelow(var/atom/thing)
+	var/turf/turf = get_turf(thing)
+	if(!istype(turf))
+		return null
+	return HasBelow(turf.z) ? locate(turf.z, turf.y, turf.z + 1) : null

code/modules/multiz/stubs.dm

@@ -0,0 +1,16 @@
+/obj/effect/landmark/map_data
+	name = "Unknown"
+	desc = "An unknown location."
+	invisibility = 101
+
+	var/height = 1     ///< The number of Z-Levels in the map.
+	var/turf/edge_type ///< What the map edge should be formed with. (null = world.turf)
+
+// FOR THE LOVE OF GOD USE THESE.  DO NOT FUCKING SPAGHETTIFY THIS.
+// Use the Has*() functions if you ONLY need to check.
+// If you need to do something, use Get*().
+proc/HasAbove(var/z)
+proc/HasBelow(var/z)
+// These give either the turf or null.
+proc/GetAbove(var/turf/turf)
+proc/GetBelow(var/turf/turf)

code/modules/power/cable.dm

@@ -126,11 +126,10 @@ By design, d1 is the smallest direction and d2 is the highest
 		return
 
 	if(istype(W, /obj/item/weapon/wirecutters))
-///// Z-Level Stuff
-		if(src.d1 == 12 || src.d2 == 12)
+		if(d1 == 12 || d2 == 12)
 			user << "<span class='warning'>You must cut this cable from above.</span>"
 			return
-///// Z-Level Stuff
+
 		if(breaker_box)
 			user << "\red This cable is connected to nearby breaker box. Use breaker box to interact with it."
 			return
@@ -146,16 +145,13 @@ By design, d1 is the smallest direction and d2 is the highest
 		for(var/mob/O in viewers(src, null))
 			O.show_message("<span class='warning'>[user] cuts the cable.</span>", 1)
 
-///// Z-Level Stuff
-		if(src.d1 == 11 || src.d2 == 11)
-			var/turf/controllerlocation = locate(1, 1, z)
-			for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-				if(controller.down)
-					var/turf/below = locate(src.x, src.y, controller.down_target)
-					for(var/obj/structure/cable/c in below)
+		if(d1 == 11 || d2 == 11)
+			var/turf/turf = GetBelow(src)
+			if(turf)
+				for(var/obj/structure/cable/c in turf)
 					if(c.d1 == 12 || c.d2 == 12)
 						qdel(c)
-///// Z-Level Stuff
+
 		investigate_log("was cut by [key_name(usr, usr.client)] in [user.loc.loc]","wires")
 
 		qdel(src)
@@ -347,19 +343,20 @@ obj/structure/cable/proc/cableColor(var/colorC)
 	. = list()	// this will be a list of all connected power objects
 	var/turf/T
 
-///// Z-Level Stuff
-	if (d1 == 11 || d1 == 12)
-		var/turf/controllerlocation = locate(1, 1, z)
-		for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-			if(controller.up && d1 == 12)
-				T = locate(src.x, src.y, controller.up_target)
-				if(T)
-					. += power_list(T, src, 11, 1)
-			if(controller.down && d1 == 11)
-				T = locate(src.x, src.y, controller.down_target)
-				if(T)
-					. += power_list(T, src, 12, 1)
-///// Z-Level Stuff
+	// Handle z-level connections.
+	if(d1 == 11 || d1 == 12)
+		// Connections below.
+		if(d1 == 11)
+			var/turf/turf = GetBelow(src)
+			if(turf)
+				. += power_list(turf, src, 12, 1)
+
+		// Connections above.
+		if(d1 == 12)
+			var/turf/turf = GetAbove(src)
+			if(turf)
+				. += power_list(turf, src, 11, 1)
+
 	//get matching cables from the first direction
 	else if(d1) //if not a node cable
 		T = get_step(src, d1)
@@ -376,19 +373,22 @@ obj/structure/cable/proc/cableColor(var/colorC)
 
 	. += power_list(loc, src, d1, powernetless_only) //get on turf matching cables
 
-///// Z-Level Stuff
+
+	// Second direction.
+	// Handle z-level connections.
 	if(d2 == 11 || d2 == 12)
-		var/turf/controllerlocation = locate(1, 1, z)
-		for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-			if(controller.up && d2 == 12)
-				T = locate(src.x, src.y, controller.up_target)
-				if(T)
-					. += power_list(T, src, 11, 1)
-			if(controller.down && d2 == 11)
-				T = locate(src.x, src.y, controller.down_target)
-				if(T)
-					. += power_list(T, src, 12, 1)
-///// Z-Level Stuff
+		// Connections below.
+		if(d2 == 11)
+			var/turf/turf = GetBelow(src)
+			if(turf)
+				. += power_list(turf, src, 12, 1)
+
+		// Connections above.
+		if(d2 == 12)
+			var/turf/turf = GetAbove(src)
+			if(turf)
+				. += power_list(turf, src, 11, 1)
+
 	else
 		//do the same on the second direction (which can't be 0)
 		T = get_step(src, d2)
@@ -672,15 +672,14 @@ obj/structure/cable/proc/cableColor(var/colorC)
 				return
 ///// Z-Level Stuff
 		// check if the target is open space
-		if(istype(F, /turf/simulated/floor/open))
+		if(istype(F, /turf/simulated/open))
 			for(var/obj/structure/cable/LC in F)
 				if((LC.d1 == dirn && LC.d2 == 11 ) || ( LC.d2 == dirn && LC.d1 == 11))
 					user << "<span class='warning'>There's already a cable at that position.</span>"
 					return
 
-			var/turf/simulated/floor/open/temp = F
 			var/obj/structure/cable/C = new(F)
-			var/obj/structure/cable/D = new(temp.floorbelow)
+			var/obj/structure/cable/D = new(GetBelow(F))
 
 			C.cableColor(color)
 

code/modules/recycling/disposal.dm

@@ -985,12 +985,9 @@
 		var/obj/structure/disposalpipe/P
 
 		if(nextdir == 12)
-			var/turf/controllerlocation = locate(1, 1, src.z)
-			for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-				if(controller.up)
-					T = locate(src.x, src.y, controller.up_target)
+			T = GetAbove(src)
 			if(!T)
-				H.loc = src.loc
+				H.loc = loc
 				return
 			else
 				for(var/obj/structure/disposalpipe/down/F in T)
@@ -1038,10 +1035,7 @@
 		var/obj/structure/disposalpipe/P
 
 		if(nextdir == 11)
-			var/turf/controllerlocation = locate(1, 1, src.z)
-			for(var/obj/effect/landmark/zcontroller/controller in controllerlocation)
-				if(controller.down)
-					T = locate(src.x, src.y, controller.down_target)
+			T = GetBelow(src)
 			if(!T)
 				H.loc = src.loc
 				return