Arranges lots of things into planes (#5072)

* Rearranges a billion things into planes

* Make cryotubes fancy

* Update Travis

* Fix hiding logic

code/game/objects/structures/bedsheet_bin.dm

@@ -10,7 +10,8 @@ LINEN BINS
 	icon = 'icons/obj/items.dmi'
 	icon_state = "sheet"
 	slot_flags = SLOT_BACK
-	layer = 4.0
+	plane = MOB_PLANE
+	layer = BELOW_MOB_LAYER
 	throwforce = 1
 	throw_speed = 1
 	throw_range = 2
@@ -19,9 +20,9 @@ LINEN BINS
 /obj/item/weapon/bedsheet/attack_self(mob/user as mob)
 	user.drop_item()
 	if(layer == initial(layer))
-		layer = MOB_LAYER + 0.1
+		layer = ABOVE_MOB_LAYER
 	else
-		layer = initial(layer)
+		reset_plane_and_layer()
 	add_fingerprint(user)
 	return
 

code/game/objects/structures/girders.dm

@@ -2,7 +2,7 @@
 	icon_state = "girder"
 	anchored = 1
 	density = 1
-	layer = 2
+	plane = PLATING_PLANE
 	w_class = ITEMSIZE_HUGE
 	var/state = 0
 	var/health = 200

code/game/objects/structures/gravemarker.dm

@@ -8,7 +8,7 @@
 	throwpass = 1
 	climbable = 1
 
-	layer = 3.1	//Above dirt piles
+	layer = ABOVE_JUNK_LAYER
 
 	//Maybe make these calculate based on material?
 	var/health = 100

code/game/objects/structures/grille.dm

@@ -7,7 +7,7 @@
 	anchored = 1
 	flags = CONDUCT
 	pressure_resistance = 5*ONE_ATMOSPHERE
-	layer = 2.9
+	layer = UNDER_JUNK_LAYER
 	explosion_resistance = 1
 	var/health = 10
 	var/destroyed = 0

code/game/objects/structures/lattice.dm

@@ -6,7 +6,7 @@
 	density = 0
 	anchored = 1.0
 	w_class = ITEMSIZE_NORMAL
-	layer = 2.3 //under pipes
+	plane = PLATING_PLANE
 	//	flags = CONDUCT
 
 /obj/structure/lattice/initialize()

code/game/objects/structures/morgue.dm

@@ -148,7 +148,7 @@
 	icon = 'icons/obj/stationobjs.dmi'
 	icon_state = "morguet"
 	density = 1
-	layer = 2.0
+	plane = TURF_PLANE
 	var/obj/structure/morgue/connected = null
 	anchored = 1
 	throwpass = 1

code/game/objects/structures/railing.dm

@@ -6,7 +6,7 @@
 	density = 1
 	throwpass = 1
 	climbable = 1
-	layer = 3.2 //Just above doors
+	layer = WINDOW_LAYER
 	anchored = 1
 	flags = ON_BORDER
 	icon_state = "railing0"

code/game/objects/structures/safe.dm

@@ -172,7 +172,8 @@ obj/structure/safe/ex_act(severity)
 	icon_state = "floorsafe"
 	density = 0
 	level = 1	//underfloor
-	layer = 2.5
+	plane = TURF_PLANE
+	layer = ABOVE_UTILITY
 
 /obj/structure/safe/floor/initialize()
 	. = ..()

code/game/objects/structures/signs.dm

@@ -3,7 +3,7 @@
 	anchored = 1
 	opacity = 0
 	density = 0
-	layer = 3.5
+	layer = ABOVE_JUNK_LAYER
 	w_class = ITEMSIZE_NORMAL
 
 /obj/structure/sign/ex_act(severity)

code/game/objects/structures/stool_bed_chair_nest/chairs.dm

@@ -47,15 +47,17 @@
 		if(isnull(stool_cache[cache_key]))
 			var/image/I = image(icon, "[base_icon]_armrest")
 			I.layer = MOB_LAYER + 0.1
+			I.plane = MOB_PLANE
 			I.color = padding_material.icon_colour
 			stool_cache[cache_key] = I
 		overlays |= stool_cache[cache_key]
 
 /obj/structure/bed/chair/proc/update_layer()
 	if(src.dir == NORTH)
-		src.layer = FLY_LAYER
+		plane = MOB_PLANE
+		layer = MOB_LAYER + 0.1
 	else
-		src.layer = OBJ_LAYER
+		reset_plane_and_layer()
 
 /obj/structure/bed/chair/set_dir()
 	..()

code/game/objects/structures/target_stake.dm

@@ -29,7 +29,7 @@
 			W.density = 1
 			user.remove_from_mob(W)
 			W.loc = loc
-			W.layer = 3.1
+			W.layer = ABOVE_JUNK_LAYER
 			pinned_target = W
 			user << "You slide the target into the stake."
 		return

code/game/objects/structures/transit_tubes.dm

@@ -7,7 +7,7 @@
 	icon = 'icons/obj/pipes/transit_tube.dmi'
 	icon_state = "E-W"
 	density = 1
-	layer = 3.1
+	layer = ABOVE_JUNK_LAYER
 	anchored = 1.0
 	var/list/tube_dirs = null
 	var/exit_delay = 2

code/game/objects/structures/window.dm

@@ -5,7 +5,7 @@
 	density = 1
 	w_class = ITEMSIZE_NORMAL
 
-	layer = 3.2//Just above doors
+	layer = WINDOW_LAYER
 	pressure_resistance = 4*ONE_ATMOSPHERE
 	anchored = 1.0
 	flags = ON_BORDER
@@ -462,7 +462,7 @@
 
 	if(ratio > 75)
 		return
-	var/image/I = image(icon, "damage[ratio]", layer + 0.1)
+	var/image/I = image(icon, "damage[ratio]", layer = layer + 0.1)
 	overlays += I
 
 	return