Arranges lots of things into planes (#5072)

* Rearranges a billion things into planes

* Make cryotubes fancy

* Update Travis

* Fix hiding logic

code/game/objects/effects/alien/aliens.dm

@@ -147,7 +147,8 @@
 
 	anchored = 1
 	density = 0
-	layer = 2
+	plane = TURF_PLANE
+	layer = ABOVE_TURF_LAYER
 	var/health = 15
 	var/obj/effect/alien/weeds/node/linked_node = null
 
@@ -155,7 +156,7 @@
 	icon_state = "weednode"
 	name = "purple sac"
 	desc = "Weird purple octopus-like thing."
-	layer = 3
+	layer = ABOVE_TURF_LAYER+0.01
 	light_range = NODERANGE
 	var/node_range = NODERANGE
 

code/game/objects/effects/chem/chemsmoke.dm

@@ -161,7 +161,7 @@
 	if(chemholder.reagents.reagent_list.len)
 		chemholder.reagents.trans_to_obj(smoke, chemholder.reagents.total_volume / dist, copy = 1) //copy reagents to the smoke so mob/breathe() can handle inhaling the reagents
 	smoke.icon = I
-	smoke.layer = 6
+	smoke.plane = ABOVE_PLANE
 	smoke.set_dir(pick(cardinal))
 	smoke.pixel_x = -32 + rand(-8, 8)
 	smoke.pixel_y = -32 + rand(-8, 8)

code/game/objects/effects/decals/Cleanable/fuel.dm

@@ -2,7 +2,7 @@
 	//Liquid fuel is used for things that used to rely on volatile fuels or phoron being contained to a couple tiles.
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "fuel"
-	layer = TURF_LAYER+0.2
+	plane = DIRTY_PLANE
 	anchored = 1
 	var/amount = 1
 

code/game/objects/effects/decals/Cleanable/humans.dm

@@ -10,7 +10,7 @@ var/global/list/image/splatter_cache=list()
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
+	plane = BLOOD_PLANE
 	icon = 'icons/effects/blood.dmi'
 	icon_state = "mfloor1"
 	random_icon_states = list("mfloor1", "mfloor2", "mfloor3", "mfloor4", "mfloor5", "mfloor6", "mfloor7")
@@ -179,7 +179,6 @@ var/global/list/image/splatter_cache=list()
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/blood.dmi'
 	icon_state = "gibbl5"
 	random_icon_states = list("gib1", "gib2", "gib3", "gib5", "gib6")
@@ -236,7 +235,6 @@ var/global/list/image/splatter_cache=list()
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/blood.dmi'
 	icon_state = "mucus"
 	random_icon_states = list("mucus")

code/game/objects/effects/decals/Cleanable/misc.dm

@@ -4,7 +4,6 @@
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/obj/objects.dmi'
 	icon_state = "shards"
 
@@ -36,7 +35,6 @@
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "dirt"
 	mouse_opacity = 0
@@ -47,7 +45,6 @@
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "flour"
 
@@ -57,7 +54,6 @@
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	light_range = 1
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "greenglow"
@@ -67,7 +63,7 @@
 	desc = "Somebody should remove that."
 	density = 0
 	anchored = 1
-	layer = 3
+	plane = OBJ_PLANE
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "cobweb1"
 
@@ -76,7 +72,7 @@
 	desc = "It looks like a melted... something."
 	density = 0
 	anchored = 1
-	layer = 3
+	plane = OBJ_PLANE
 	icon = 'icons/obj/chemical.dmi'
 	icon_state = "molten"
 
@@ -85,7 +81,7 @@
 	desc = "Somebody should remove that."
 	density = 0
 	anchored = 1
-	layer = 3
+	plane = OBJ_PLANE
 	icon = 'icons/effects/effects.dmi'
 	icon_state = "cobweb2"
 
@@ -96,7 +92,6 @@
 	gender = PLURAL
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/blood.dmi'
 	icon_state = "vomit_1"
 	random_icon_states = list("vomit_1", "vomit_2", "vomit_3", "vomit_4")
@@ -107,7 +102,6 @@
 	desc = "It's red."
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/tomatodecal.dmi'
 	random_icon_states = list("tomato_floor1", "tomato_floor2", "tomato_floor3")
 
@@ -116,7 +110,6 @@
 	desc = "Seems like this one won't hatch."
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/tomatodecal.dmi'
 	random_icon_states = list("smashed_egg1", "smashed_egg2", "smashed_egg3")
 
@@ -125,7 +118,6 @@
 	desc = "It's pie cream from a cream pie."
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/tomatodecal.dmi'
 	random_icon_states = list("smashed_pie")
 
@@ -134,7 +126,6 @@
 	desc = "Some kind of fruit smear."
 	density = 0
 	anchored = 1
-	layer = 2
 	icon = 'icons/effects/blood.dmi'
 	icon_state = "mfloor1"
 	random_icon_states = list("mfloor1", "mfloor2", "mfloor3", "mfloor4", "mfloor5", "mfloor6", "mfloor7")

code/game/objects/effects/decals/cleanable.dm

@@ -1,4 +1,5 @@
 /obj/effect/decal/cleanable
+	plane = DIRTY_PLANE
 	var/list/random_icon_states = list()
 
 /obj/effect/decal/cleanable/clean_blood(var/ignore = 0)

code/game/objects/effects/decals/crayon.dm

@@ -2,7 +2,7 @@
 	name = "rune"
 	desc = "A rune drawn in crayon."
 	icon = 'icons/obj/rune.dmi'
-	layer = 2.1
+	plane = DIRTY_PLANE
 	anchored = 1
 
 	New(location,main = "#FFFFFF",shade = "#000000",var/type = "rune")

code/game/objects/effects/decals/misc.dm

@@ -3,7 +3,7 @@
 	desc = "It's an arrow hanging in mid-air. There may be a wizard about."
 	icon = 'icons/mob/screen1.dmi'
 	icon_state = "arrow"
-	layer = 16.0
+	plane = ABOVE_PLANE
 	anchored = 1
 	mouse_opacity = 0
 
@@ -11,4 +11,4 @@
 /obj/effect/decal/spraystill
 	density = 0
 	anchored = 1
-	layer = 50
+	plane = ABOVE_PLANE

code/game/objects/effects/decals/warning_stripes.dm

@@ -1,6 +1,5 @@
 /obj/effect/decal/warning_stripes
 	icon = 'icons/effects/warning_stripes.dmi'
-	layer = 2
 
 /obj/effect/decal/warning_stripes/New()
 	. = ..()

code/game/objects/effects/misc.dm

@@ -26,7 +26,8 @@
 	desc = "Something swinging really wide."
 	icon = 'icons/effects/96x96.dmi'
 	icon_state = "cleave"
-	layer = 6
+	plane = MOB_PLANE
+	layer = ABOVE_MOB_LAYER
 	time_to_die = 6
 	alpha = 140
 	mouse_opacity = 0

code/game/objects/effects/overlays.dm

@@ -17,7 +17,8 @@
 	icon = 'icons/misc/beach2.dmi'
 	icon_state = "palm1"
 	density = 1
-	layer = 5
+	plane = MOB_PLANE
+	layer = ABOVE_MOB_LAYER
 	anchored = 1
 
 /obj/effect/overlay/palmtree_l
@@ -25,7 +26,8 @@
 	icon = 'icons/misc/beach2.dmi'
 	icon_state = "palm2"
 	density = 1
-	layer = 5
+	plane = MOB_PLANE
+	layer = ABOVE_MOB_LAYER
 	anchored = 1
 
 /obj/effect/overlay/coconut
@@ -37,7 +39,7 @@
 	name = "Bluespace"
 	icon = 'icons/turf/space.dmi'
 	icon_state = "bluespacify"
-	layer = 10
+	plane = ABOVE_PLANE
 
 /obj/effect/overlay/wallrot
 	name = "wallrot"
@@ -45,7 +47,8 @@
 	icon = 'icons/effects/wallrot.dmi'
 	anchored = 1
 	density = 1
-	layer = 5
+	plane = MOB_PLANE
+	layer = ABOVE_MOB_LAYER
 	mouse_opacity = 0
 
 /obj/effect/overlay/wallrot/New()
@@ -70,7 +73,8 @@
 
 /obj/effect/overlay/snow/floor
 	icon_state = "snowfloor"
-	layer = 2.01 //Just above floor
+	plane = TURF_PLANE
+	layer = ABOVE_TURF_LAYER
 	mouse_opacity = 0 //Don't block underlying tile interactions
 
 /obj/effect/overlay/snow/floor/edges
@@ -81,11 +85,12 @@
 
 /obj/effect/overlay/snow/airlock
 	icon_state = "snowairlock"
-	layer = 3.2 //Just above airlocks
+	layer = DOOR_CLOSED_LAYER+0.01
 
 /obj/effect/overlay/snow/floor/pointy
 	icon_state = "snowfloorpointy"
 
 /obj/effect/overlay/snow/wall
 	icon_state = "snowwall"
-	layer = 5 //Same as lights so humans can stand under it
+	plane = MOB_PLANE
+	layer = ABOVE_MOB_LAYER

code/game/objects/effects/spiders.dm

@@ -123,7 +123,7 @@
 	desc = "It never stays still for long."
 	icon_state = "spiderling"
 	anchored = 0
-	layer = 2.7
+	layer = HIDING_LAYER
 	health = 3
 	var/last_itch = 0
 	var/amount_grown = -1