Ports TG Icemoon framework and map (#49680) (#12002)

* ports all the tg junk for icemoon, not yet changed to make it all compile

* fixes

* fixes

* fixes

* fixes

* fixes

* new stuff

* whew

* fixes

* it compiles, now to fix the maps

* fixes the maps

* fixes solars + removes the space tiles in the toxins burn chamber

* nukes the SpawnTerrain proc used for tg geysers

* linter fix

* fix

* fixes the non matching turf atmos (hopefully)

* more mapping fixes

* dmm2tgm

* unfucks changeturf for the more_caves

* fixes the volanic subtypes of the other thing

* fixes the stupid fucking tile placing list

* some map fixes, fixes the station_ruin loader shitting out errors this commit took 2 hours of my fucking life

* fixes a bunch of mismatch atmos in ruins

* fixes wendigo cave having no air

* backwards couch backwards couch

* fixes the SM up

* wendigos can't runtime when butchering if you can't butcher them 😎

* makes the wendigo fight have the same atmos as the surrounding icemoon

* Tweaks atmos mixture from o2=22;n2=82;TEMP=180 to o2=18;n2=63;TEMP=180, making lavaland weapons actually work

* makes the wendigo screech shake not completely aids

* fixes snowlegion portals dropping proper legions instead of skeles

* brings the engioutpost ruin over as well

* whoopps

* empty commit to reroll bots

* Fixes pirates, ops, the mining base, and gives pirates and ops drills

* fixes lone ops and ninjas

* fixes the snowed plating getting fucked when tiles are placed on it

* removes some OP junk from the wabbajack pool (aka removes non-antag headslugs again)

* more bug fixes

* empty commit to reroll bots

* hopefully finally kills the active turfs on the library ruin

Co-authored-by: kevinz000 <2003111+kevinz000@users.noreply.github.com>

code/game/area/areas.dm

@@ -11,13 +11,27 @@
 	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
 	invisibility = INVISIBILITY_LIGHTING
 
-	var/map_name // Set in New(); preserves the name set by the map maker, even if renamed by the Blueprints.
+	/// Set in New(); preserves the name set by the map maker, even if renamed by the Blueprints.
+	var/map_name
 
-	var/valid_territory = TRUE // If it's a valid territory for gangs to claim
-	var/blob_allowed = TRUE // Does it count for blobs score? By default, all areas count.
-	var/clockwork_warp_allowed = TRUE // Can servants warp into this area from Reebe?
+	/// If it's valid territory for gangs/cults to summon
+	var/valid_territory = TRUE
+	/// if blobs can spawn there and if it counts towards their score.
+	var/blob_allowed = TRUE
+	/// whether servants can warp into this area from Reebe
+	var/clockwork_warp_allowed = TRUE
+	/// Message to display when the clockwork warp fails
 	var/clockwork_warp_fail = "The structure there is too dense for warping to pierce. (This is normal in high-security areas.)"
 
+	/// If mining tunnel generation is allowed in this area
+	var/tunnel_allowed = FALSE
+	/// If flora are allowed to spawn in this area randomly through tunnel generation
+	var/flora_allowed = FALSE
+	/// if mobs can be spawned by natural random generation
+	var/mob_spawn_allowed = FALSE
+	/// If megafauna can be spawned by natural random generation
+	var/megafauna_spawn_allowed = FALSE
+
 	var/fire = null
 	var/atmos = TRUE
 	var/atmosalm = FALSE
@@ -25,11 +39,14 @@
 	var/lightswitch = TRUE
 
 	var/requires_power = TRUE
-	var/always_unpowered = FALSE	// This gets overridden to 1 for space in area/Initialize().
+	/// This gets overridden to 1 for space in area/Initialize().
+	var/always_unpowered = FALSE
 
-	var/outdoors = FALSE //For space, the asteroid, lavaland, etc. Used with blueprints to determine if we are adding a new area (vs editing a station room)
+	/// For space, the asteroid, lavaland, etc. Used with blueprints to determine if we are adding a new area (vs editing a station room)
+	var/outdoors = FALSE
 
-	var/areasize = 0 //Size of the area in open turfs, only calculated for indoors areas.
+	/// Size of the area in open turfs, only calculated for indoors areas.
+	var/areasize = 0
 
 	var/power_equip = TRUE
 	var/power_light = TRUE
@@ -43,9 +60,12 @@
 	var/static_environ
 
 	var/has_gravity = 0
-	var/noteleport = FALSE			//Are you forbidden from teleporting to the area? (centcom, mobs, wizard, hand teleporter)
-	var/hidden = FALSE 			//Hides area from player Teleport function.
-	var/safe = FALSE 				//Is the area teleport-safe: no space / radiation / aggresive mobs / other dangers
+	/// Are you forbidden from teleporting to the area? (centcom, mobs, wizard, hand teleporter)
+	var/noteleport = FALSE
+	/// Hides area from player Teleport function.
+	var/hidden = FALSE
+	/// Is the area teleport-safe: no space / radiation / aggresive mobs / other dangers
+	var/safe = FALSE 				
 	/// If false, loading multiple maps with this area type will create multiple instances.
 	var/unique = TRUE
 

code/game/area/areas/mining.dm

@@ -3,6 +3,7 @@
 /area/mine
 	icon_state = "mining"
 	has_gravity = STANDARD_GRAVITY
+	flora_allowed = TRUE
 
 /area/mine/explored
 	name = "Mine"
@@ -17,6 +18,7 @@
 	outdoors = TRUE
 	flags_1 = NONE
 	ambientsounds = MINING
+	flora_allowed = FALSE
 
 /area/mine/unexplored
 	name = "Mine"
@@ -31,6 +33,7 @@
 	outdoors = TRUE
 	flags_1 = NONE
 	ambientsounds = MINING
+	tunnel_allowed = TRUE
 
 /area/mine/lobby
 	name = "Mining Station"
@@ -82,6 +85,7 @@
 	icon_state = "mining"
 	has_gravity = STANDARD_GRAVITY
 	flags_1 = NONE
+	flora_allowed = TRUE
 
 /area/lavaland/surface
 	name = "Lavaland"
@@ -114,9 +118,79 @@
 
 /area/lavaland/surface/outdoors/unexplored //monsters and ruins spawn here
 	icon_state = "unexplored"
+	tunnel_allowed = TRUE
+	mob_spawn_allowed = TRUE
 
 /area/lavaland/surface/outdoors/unexplored/danger //megafauna will also spawn here
 	icon_state = "danger"
+	megafauna_spawn_allowed = TRUE
 
 /area/lavaland/surface/outdoors/explored
 	name = "Lavaland Labor Camp"
+	flora_allowed = FALSE
+
+
+
+/**********************Ice Moon Areas**************************/
+
+/area/icemoon
+	icon_state = "mining"
+	has_gravity = STANDARD_GRAVITY
+	flags_1 = NONE
+	flora_allowed = TRUE
+	blob_allowed = FALSE
+
+/area/icemoon/surface
+	name = "Icemoon"
+	icon_state = "explored"
+	always_unpowered = TRUE
+	poweralm = FALSE
+	power_environ = FALSE
+	power_equip = FALSE
+	power_light = FALSE
+	requires_power = TRUE
+	ambientsounds = MINING
+
+/area/icemoon/underground
+	name = "Icemoon Caves"
+	outdoors = TRUE
+	always_unpowered = TRUE
+	requires_power = TRUE
+	poweralm = FALSE
+	power_environ = FALSE
+	power_equip = FALSE
+	power_light = FALSE
+	ambientsounds = MINING
+
+/area/icemoon/underground/unexplored // mobs and megafauna and ruins spawn here
+	name = "Icemoon Caves"
+	icon_state = "unexplored"
+	tunnel_allowed = TRUE
+	mob_spawn_allowed = TRUE
+	megafauna_spawn_allowed = TRUE
+
+/area/icemoon/underground/unexplored/rivers // rivers spawn here
+	icon_state = "danger"
+
+/area/icemoon/underground/explored
+	name = "Icemoon Underground"
+	flora_allowed = FALSE
+
+/area/icemoon/surface/outdoors
+	name = "Icemoon Wastes"
+	outdoors = TRUE
+
+/area/icemoon/surface/outdoors/labor_camp
+	name = "Icemoon Labor Camp"
+	flora_allowed = FALSE
+
+/area/icemoon/surface/outdoors/unexplored //monsters and ruins spawn here
+	icon_state = "unexplored"
+	tunnel_allowed = TRUE
+	mob_spawn_allowed = TRUE
+
+/area/icemoon/surface/outdoors/unexplored/rivers // rivers spawn here
+	icon_state = "danger"
+
+/area/icemoon/surface/outdoors/unexplored/rivers/no_monsters
+	mob_spawn_allowed = FALSE

code/game/area/areas/ruins/icemoon.dm

@@ -0,0 +1,9 @@
+// Icemoon Ruins
+
+/area/ruin/unpowered/buried_library
+	name = "Buried Library"
+	icon_state = "dk_yellow"
+
+/area/ruin/powered/bathhouse
+	name = "Bath House"
+	icon_state = "dk_yellow"

code/game/atoms_movement.dm

@@ -20,6 +20,9 @@
 	if(!newloc.Enter(src, src.loc))
 		return
 
+	if (SEND_SIGNAL(src, COMSIG_MOVABLE_PRE_MOVE, newloc) & COMPONENT_MOVABLE_BLOCK_PRE_MOVE)
+		return
+
 	// Past this is the point of no return
 	var/atom/oldloc = loc
 	var/area/oldarea = get_area(oldloc)

code/game/gamemodes/dynamic/dynamic_rulesets_midround.dm

@@ -642,6 +642,9 @@
 		for(var/obj/effect/landmark/carpspawn/L in GLOB.landmarks_list)
 			if(isturf(L.loc))
 				spawn_locs += L.loc
+		for(var/obj/effect/landmark/loneopspawn/L in GLOB.landmarks_list)
+			if(isturf(L.loc))
+				spawn_locs += L.loc
 		if(!spawn_locs.len)
 			return FALSE
 		spawn_loc = pick(spawn_locs)

code/game/objects/effects/landmarks.dm

@@ -313,6 +313,11 @@ INITIALIZE_IMMEDIATE(/obj/effect/landmark/start/new_player)
 	name = "carpspawn"
 	icon_state = "carp_spawn"
 
+// lone op (optional)
+/obj/effect/landmark/loneopspawn
+	name = "loneop+ninjaspawn"
+	icon_state = "snukeop_spawn"
+
 // observer-start.
 /obj/effect/landmark/observer_start
 	name = "Observer-Start"
@@ -512,3 +517,9 @@ INITIALIZE_IMMEDIATE(/obj/effect/landmark/start/new_player)
 /obj/effect/landmark/stationroom/lavaland/station
 	templates = list("Public Mining Base" = 3)
 	icon = 'icons/rooms/Lavaland/Mining.dmi'
+
+// handled in portals.dm, id connected to one-way portal
+/obj/effect/landmark/portal_exit
+	name = "portal exit"
+	icon_state = "portal_exit"
+	var/id

code/game/objects/effects/portals.dm

@@ -29,6 +29,7 @@
 	var/allow_anchored = FALSE
 	var/innate_accuracy_penalty = 0
 	var/last_effect = 0
+	var/force_teleport = FALSE
 
 /obj/effect/portal/anom
 	name = "wormhole"
@@ -162,7 +163,7 @@
 		no_effect = TRUE
 	else
 		last_effect = world.time
-	if(do_teleport(M, real_target, innate_accuracy_penalty, no_effects = no_effect, channel = teleport_channel))
+	if(do_teleport(M, real_target, innate_accuracy_penalty, no_effects = no_effect, channel = teleport_channel, forced = force_teleport))
 		if(istype(M, /obj/item/projectile))
 			var/obj/item/projectile/P = M
 			P.ignore_source_check = TRUE
@@ -183,3 +184,47 @@
 	else
 		real_target = get_turf(linked)
 	return real_target
+
+/obj/effect/portal/permanent
+	name = "permanent portal"
+	desc = "An unwavering portal that will never fade."
+	hardlinked = FALSE // dont qdel my portal nerd
+	force_teleport = TRUE // force teleports because they're a mapmaker tool
+	var/id // var edit or set id in map editor
+
+/obj/effect/portal/permanent/proc/set_linked()
+	if(!id)
+		return
+	for(var/obj/effect/portal/permanent/P in GLOB.portals - src)
+		if(P.id == id)
+			P.linked = src
+			linked = P
+			break
+
+/obj/effect/portal/permanent/teleport(atom/movable/M, force = FALSE)
+	set_linked() // update portal links
+	. = ..()
+
+/obj/effect/portal/permanent/one_way // doesn't have a return portal, can have multiple exits, /obj/effect/landmark/portal_exit to mark them
+	name = "one-way portal"
+	desc = "You get the feeling that this might not be the safest thing you've ever done."
+
+/obj/effect/portal/permanent/one_way/set_linked()
+	if(!id)
+		return
+	var/list/possible_turfs = list()
+	for(var/obj/effect/landmark/portal_exit/PE in GLOB.landmarks_list)
+		if(PE.id == id)
+			var/turf/T = get_turf(PE)
+			if(T)
+				possible_turfs |= T
+	if(possible_turfs.len)
+		hard_target = pick(possible_turfs)
+
+/obj/effect/portal/permanent/one_way/one_use
+	name = "one-use portal"
+	desc = "This is probably the worst decision you'll ever make in your life."
+
+/obj/effect/portal/permanent/one_way/one_use/teleport(atom/movable/M, force = FALSE)
+	. = ..()
+	qdel(src)

code/game/objects/items/devices/flashlight.dm

@@ -351,6 +351,12 @@
 	light_color = "#FFAA44"
 	flashlight_power = 0.8
 
+/obj/item/flashlight/lantern/jade
+	name = "jade lantern"
+	desc = "An ornate, green lantern."
+	color = LIGHT_COLOR_GREEN
+	light_color = LIGHT_COLOR_GREEN 
+
 /obj/item/flashlight/slime
 	gender = PLURAL
 	name = "glowing slime extract"

code/game/objects/items/devices/pressureplates.dm

@@ -8,6 +8,7 @@
 	level = 1
 	var/trigger_mob = TRUE
 	var/trigger_item = FALSE
+	var/specific_item = null
 	var/trigger_silent = FALSE
 	var/sound/trigger_sound = 'sound/effects/pressureplate.ogg'
 	var/obj/item/assembly/signaler/sigdev = null
@@ -35,6 +36,8 @@
 	. = ..()
 	if(!can_trigger || !active)
 		return
+	if(trigger_item && !istype(AM, specific_item))
+		return
 	if(trigger_mob && isliving(AM))
 		var/mob/living/L = AM
 		to_chat(L, "<span class='warning'>You feel something click beneath you!</span>")

code/game/objects/items/kitchen.dm

@@ -3,6 +3,7 @@
  *		Fork
  *		Kitchen knives
  *		Ritual Knife
+ *		Bloodletter
  *		Butcher's cleaver
  *		Combat Knife
  *		Rolling Pins
@@ -97,6 +98,28 @@
 	righthand_file = 'icons/mob/inhands/equipment/kitchen_righthand.dmi'
 	w_class = WEIGHT_CLASS_NORMAL
 
+/obj/item/kitchen/knife/bloodletter
+	name = "bloodletter"
+	desc = "An occult looking dagger that is cold to the touch. Somehow, the flawless orb on the pommel is made entirely of liquid blood."
+	icon = 'icons/obj/ice_moon/artifacts.dmi'
+	icon_state = "bloodletter"
+	w_class = WEIGHT_CLASS_NORMAL 
+	/// Bleed stacks applied when an organic mob target is hit
+	var/bleed_stacks_per_hit = 3
+	
+/obj/item/kitchen/knife/bloodletter/afterattack(atom/target, mob/user, proximity_flag, click_parameters)
+	. = ..()
+	if(!isliving(target) || !proximity_flag)
+		return
+	var/mob/living/M = target
+	if(!(M.mob_biotypes & MOB_ORGANIC))
+		return
+	var/datum/status_effect/stacking/saw_bleed/bloodletting/B = M.has_status_effect(/datum/status_effect/stacking/saw_bleed/bloodletting)
+	if(!B)
+		M.apply_status_effect(/datum/status_effect/stacking/saw_bleed/bloodletting, bleed_stacks_per_hit)
+	else
+		B.add_stacks(bleed_stacks_per_hit)
+
 /obj/item/kitchen/knife/butcher
 	name = "butcher's cleaver"
 	icon_state = "butch"

code/game/objects/items/puzzle_pieces.dm

@@ -0,0 +1,146 @@
+//**************
+//*****Keys*******************
+//**************		**  **
+/obj/item/keycard
+	name = "security keycard"
+	desc = "This feels like it belongs to a door."
+	icon = 'icons/obj/puzzle_small.dmi'
+	icon_state = "keycard"
+	force = 0
+	throwforce = 0
+	w_class = WEIGHT_CLASS_TINY
+	throw_speed = 1
+	throw_range = 7
+	resistance_flags = INDESTRUCTIBLE | FIRE_PROOF | ACID_PROOF | LAVA_PROOF
+	var/puzzle_id = null
+
+//Two test keys for use alongside the two test doors.
+/obj/item/keycard/cheese
+	name = "cheese keycard"
+	desc = "Look, I still don't understand the reference. What the heck is a keyzza?"
+	color = "#f0da12"
+	puzzle_id = "cheese"
+
+/obj/item/keycard/swordfish
+	name = "titanic keycard"
+	desc = "Smells like it was at the bottom of a harbor."
+	color = "#3bbbdb"
+	puzzle_id = "swordfish"
+
+//***************
+//*****Doors*****
+//***************
+
+/obj/machinery/door/keycard
+	name = "locked door"
+	desc = "This door only opens when a keycard is swiped. It looks virtually indestructable."
+	icon = 'icons/obj/doors/puzzledoor/default.dmi'
+	icon_state = "door_closed"
+	explosion_block = 3
+	heat_proof = TRUE
+	max_integrity = 600
+	armor = list("melee" = 100, "bullet" = 100, "laser" = 100, "energy" = 100, "bomb" = 100, "bio" = 100, "rad" = 100, "fire" = 100, "acid" = 100)
+	resistance_flags = INDESTRUCTIBLE | FIRE_PROOF | ACID_PROOF | LAVA_PROOF
+	damage_deflection = 70
+	/// Make sure that the key has the same puzzle_id as the keycard door!
+	var/puzzle_id = null
+	/// Message that occurs when the door is opened
+	var/open_message = "The door beeps, and slides opens."
+
+//Standard Expressions to make keycard doors basically un-cheeseable
+/obj/machinery/door/keycard/Bumped(atom/movable/AM)
+	return !density && ..()
+
+/obj/machinery/door/keycard/emp_act(severity)
+	return
+
+/obj/machinery/door/keycard/ex_act(severity, target)
+	return
+
+/obj/machinery/door/keycard/try_to_activate_door(mob/user)
+	add_fingerprint(user)
+	if(operating)
+		return
+
+/obj/machinery/door/keycard/attackby(obj/item/I, mob/user, params)
+	. = ..()
+	if(istype(I,/obj/item/keycard))
+		var/obj/item/keycard/key = I
+		if((!puzzle_id || puzzle_id == key.puzzle_id)  && density)
+			if(open_message)
+				to_chat(user, "<span class='notice'>[open_message]</span>")
+			open()
+			return
+		else if(puzzle_id != key.puzzle_id)
+			to_chat(user, "<span class='notice'>[src] buzzes. This must not be the right key.</span>")
+			return
+		else
+			to_chat(user, "<span class='notice'>This door doesn't appear to close.</span>")
+			return
+
+//Test doors. Gives admins a few doors to use quickly should they so choose.
+/obj/machinery/door/keycard/cheese
+	name = "blue airlock"
+	desc = "Smells like... pizza?"
+	puzzle_id = "cheese"
+
+/obj/machinery/door/keycard/swordfish
+	name = "blue airlock"
+	desc = "If nautical nonsense be something you wish."
+	puzzle_id = "swordfish"
+
+//*************************
+//***Box Pushing Puzzles***
+//*************************
+//We're working off a subtype of pressureplates, which should work just a BIT better now.
+/obj/structure/holobox
+	name = "holobox"
+	desc = "A hard-light box, containing a secure decryption key."
+	icon = 'icons/obj/puzzle_small.dmi'
+	icon_state = "laserbox"
+	density = TRUE
+	resistance_flags = INDESTRUCTIBLE | FIRE_PROOF | ACID_PROOF | LAVA_PROOF
+
+//Uses the pressure_plate settings for a pretty basic custom pattern that waits for a specific item to trigger. Easy enough to retool for mapping purposes or subtypes.
+/obj/item/pressure_plate/hologrid
+	name = "hologrid"
+	desc = "A high power, electronic input port for a holobox, which can unlock the hologrid's storage compartment. Safe to stand on."
+	icon = 'icons/obj/puzzle_small.dmi'
+	icon_state = "lasergrid"
+	anchored = TRUE
+	trigger_mob = FALSE
+	trigger_item = TRUE
+	specific_item = /obj/structure/holobox
+	removable_signaller = FALSE //Being a pressure plate subtype, this can also use signals.
+	roundstart_signaller_freq = FREQ_HOLOGRID_SOLUTION //Frequency is kept on it's own default channel however.
+	active = TRUE
+	trigger_delay = 10
+	resistance_flags = INDESTRUCTIBLE | FIRE_PROOF | ACID_PROOF | LAVA_PROOF
+	var/reward = /obj/item/reagent_containers/food/snacks/cookie
+	var/claimed = FALSE
+
+/obj/item/pressure_plate/hologrid/examine(mob/user)
+	. = ..()
+	if(claimed)
+		. += "<span class='notice'>This one appears to be spent already.</span>"
+
+/obj/item/pressure_plate/hologrid/trigger()
+	if(!claimed)
+		new reward(loc)
+	flick("lasergrid_a",src)
+	icon_state = "lasergrid_full"
+	claimed = TRUE
+
+/obj/item/pressure_plate/hologrid/Crossed(atom/movable/AM)
+	. = ..()
+	if(trigger_item && istype(AM, specific_item) && !claimed)
+		AM.anchored = TRUE
+		flick("laserbox_burn", AM)
+		trigger()
+		sleep(15)
+		qdel(AM)
+
+// snowflake code until undertile elements
+/obj/item/pressure_plate/hologrid/hide()
+	. = ..()
+	anchored = TRUE

code/game/objects/items/stacks/sheets/leather.dm

@@ -178,6 +178,11 @@ GLOBAL_LIST_INIT(leather_recipes, list ( \
 	icon_state = "sinew"
 	novariants = TRUE
 
+/obj/item/stack/sheet/sinew/wolf
+	name = "wolf sinew"
+	desc = "Long stringy filaments which came from the insides of a wolf."
+	singular_name = "wolf sinew"
+
 
 GLOBAL_LIST_INIT(sinew_recipes, list ( \
 	new/datum/stack_recipe("sinew restraints", /obj/item/restraints/handcuffs/sinew, 1), \
@@ -202,6 +207,11 @@ GLOBAL_LIST_INIT(sinew_recipes, list ( \
 	w_class = WEIGHT_CLASS_NORMAL
 	layer = MOB_LAYER
 
+/obj/item/stack/sheet/animalhide/goliath_hide/polar_bear_hide
+	name = "polar bear hides"
+	desc = "Pieces of a polar bear's fur, these might be able to make your suit a bit more durable to attack from the local fauna."
+	icon_state = "polar_bear_hide"
+	singular_name = "polar bear hide"
 
 /obj/item/stack/sheet/animalhide/ashdrake
 	name = "ash drake hide"

code/game/objects/structures/flora.dm

@@ -350,11 +350,28 @@
 	icon = 'icons/obj/flora/rocks.dmi'
 	resistance_flags = FIRE_PROOF
 	density = TRUE
+	/// Itemstack that is dropped when a rock is mined with a pickaxe
+	var/obj/item/stack/mineResult = /obj/item/stack/ore/glass/basalt
+	/// Amount of the itemstack to drop
+	var/mineAmount = 20
 
 /obj/structure/flora/rock/Initialize()
 	. = ..()
 	icon_state = "[icon_state][rand(1,3)]"
 
+/obj/structure/flora/rock/attackby(obj/item/W, mob/user, params)
+	if(!mineResult || W.tool_behaviour != TOOL_MINING)
+		return ..()
+	if(flags_1 & NODECONSTRUCT_1)
+		return ..()
+	to_chat(user, "<span class='notice'>You start mining...</span>")
+	if(W.use_tool(src, user, 40, volume=50))
+		to_chat(user, "<span class='notice'>You finish mining the rock.</span>")
+		if(mineResult && mineAmount)
+			new mineResult(get_turf(src), mineAmount)
+		SSblackbox.record_feedback("tally", "pick_used_mining", 1, W.type)
+		qdel(src)
+
 /obj/structure/flora/rock/pile
 	icon_state = "lavarocks"
 	desc = "A pile of rocks."

code/game/objects/structures/icemoon/cave_entrance.dm

@@ -0,0 +1,178 @@
+GLOBAL_LIST_INIT(ore_probability, list(/obj/item/stack/ore/uranium = 50,
+						 			   /obj/item/stack/ore/iron = 100,
+						 			   /obj/item/stack/ore/plasma = 75,
+						 			   /obj/item/stack/ore/silver = 50,
+						 			   /obj/item/stack/ore/gold = 50,
+						 			   /obj/item/stack/ore/diamond = 25,
+						 			   /obj/item/stack/ore/bananium = 5,
+						 			   /obj/item/stack/ore/titanium = 75))
+
+/obj/structure/spawner/ice_moon
+	name = "cave entrance"
+	desc = "A hole in the ground, filled with monsters ready to defend it."
+	icon = 'icons/mob/nest.dmi'
+	icon_state = "hole"
+	faction = list("mining")
+	max_mobs = 3
+	max_integrity = 250
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/wolf)
+	move_resist = INFINITY
+	anchored = TRUE
+
+/obj/structure/spawner/ice_moon/Initialize()
+	. = ..()
+	clear_rock()
+
+/**
+  * Clears rocks around the spawner when it is created
+  *
+  */
+/obj/structure/spawner/ice_moon/proc/clear_rock()
+	for(var/turf/F in RANGE_TURFS(2, src))
+		if(abs(src.x - F.x) + abs(src.y - F.y) > 3)
+			continue
+		if(ismineralturf(F))
+			var/turf/closed/mineral/M = F
+			M.ScrapeAway(null, CHANGETURF_IGNORE_AIR)
+
+/obj/structure/spawner/ice_moon/deconstruct(disassembled)
+	destroy_effect()
+	drop_loot()
+	return ..()
+
+/**
+  * Effects and messages created when the spawner is destroyed
+  *
+  */
+/obj/structure/spawner/ice_moon/proc/destroy_effect()
+	playsound(loc,'sound/effects/explosionfar.ogg', 200, TRUE)
+	visible_message("<span class='boldannounce'>[src] collapses, sealing everything inside!</span>\n<span class='warning'>Ores fall out of the cave as it is destroyed!</span>")
+
+/**
+  * Drops items after the spawner is destroyed
+  *
+  */
+/obj/structure/spawner/ice_moon/proc/drop_loot()
+	for(var/type in GLOB.ore_probability)
+		var/chance = GLOB.ore_probability[type]
+		if(!prob(chance))
+			continue
+		new type(loc, rand(5, 10))
+
+/obj/structure/spawner/ice_moon/polarbear
+	max_mobs = 1
+	spawn_time = 60 SECONDS
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/polarbear)
+
+/obj/structure/spawner/ice_moon/polarbear/clear_rock()
+	for(var/turf/F in RANGE_TURFS(1, src))
+		if(ismineralturf(F))
+			var/turf/closed/mineral/M = F
+			M.ScrapeAway(null, CHANGETURF_IGNORE_AIR)
+
+/obj/structure/spawner/ice_moon/demonic_portal
+	name = "demonic portal"
+	desc = "A portal that goes to another world, normal creatures couldn't survive there."
+	icon_state = "nether"
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/ice_demon)
+	light_range = 1
+	light_color = LIGHT_COLOR_RED
+
+/obj/structure/spawner/ice_moon/demonic_portal/clear_rock()
+	for(var/turf/F in RANGE_TURFS(3, src))
+		if(abs(src.x - F.x) + abs(src.y - F.y) > 5)
+			continue
+		if(ismineralturf(F))
+			var/turf/closed/mineral/M = F
+			M.ScrapeAway(null, CHANGETURF_IGNORE_AIR)
+
+/obj/structure/spawner/ice_moon/demonic_portal/destroy_effect()
+	new /obj/effect/collapsing_demonic_portal(loc)
+
+/obj/structure/spawner/ice_moon/demonic_portal/drop_loot()
+	return
+
+/obj/structure/spawner/ice_moon/demonic_portal/ice_whelp
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/ice_whelp)
+
+/obj/structure/spawner/ice_moon/demonic_portal/snowlegion
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/hivelord/legion/snow/tendril)
+
+/obj/effect/collapsing_demonic_portal
+	name = "collapsing demonic portal"
+	desc = "It's slowly fading!"
+	layer = TABLE_LAYER
+	icon = 'icons/mob/nest.dmi'
+	icon_state = "nether"
+	anchored = TRUE
+	density = TRUE
+
+/obj/effect/collapsing_demonic_portal/Initialize()
+	. = ..()
+	playsound(loc,'sound/effects/tendril_destroyed.ogg', 200, FALSE, 50, TRUE, TRUE)
+	visible_message("<span class='boldannounce'>[src] begins to collapse, cutting it off from this world!</span>")
+	animate(src, transform = matrix().Scale(0, 1), alpha = 50, time = 5 SECONDS)
+	addtimer(CALLBACK(src, .proc/collapse), 5 SECONDS)
+
+/obj/effect/collapsing_demonic_portal/proc/collapse()
+	visible_message("<span class='warning'>Something slips out of [src]!</span>")
+	var/loot = rand(1, 28)
+	switch(loot)
+		if(1)
+			new /obj/item/clothing/suit/space/hardsuit/cult(loc)
+		if(2)
+			new /obj/item/clothing/glasses/godeye(loc)
+		if(3)
+			new /obj/item/reagent_containers/glass/bottle/potion/flight(loc)
+		if(4)
+			new /obj/item/organ/heart/cursed/wizard(loc)
+		if(5)
+			new /obj/item/jacobs_ladder(loc)
+		if(6)
+			new /obj/item/rod_of_asclepius(loc)
+		if(7)
+			new /obj/item/warp_cube/red(loc)
+		if(8)
+			new /obj/item/wisp_lantern(loc)
+		if(9)
+			new /obj/item/immortality_talisman(loc)
+		if(10)
+			new /obj/item/book/granter/spell/summonitem(loc)
+		if(11)
+			new /obj/item/clothing/neck/necklace/memento_mori(loc)
+		if(12)
+			new /obj/item/borg/upgrade/modkit/lifesteal(loc)
+			new /obj/item/bedsheet/cult(loc)
+		if(13)
+			new /obj/item/disk/design_disk/modkit_disc/mob_and_turf_aoe(loc)
+		if(14)
+			new /obj/item/disk/design_disk/modkit_disc/bounty(loc)
+		if(15)
+			new /obj/item/ship_in_a_bottle(loc)
+			new /obj/item/oar(loc)
+		if(16)
+			new /obj/item/seeds/gatfruit(loc)
+		if(17)
+			new /obj/item/reagent_containers/food/drinks/drinkingglass/filled/nuka_cola(loc)
+		if(18)
+			new /obj/item/assembly/signaler/anomaly/bluespace(loc)
+		if(19)
+			new /obj/item/disk/design_disk/modkit_disc/resonator_blast(loc)
+		if(20)
+			new /obj/item/disk/design_disk/modkit_disc/rapid_repeater(loc)
+		if(21)
+			new /obj/item/slimepotion/transference(loc)
+		if(22)
+			new /obj/item/slime_extract/adamantine(loc)
+		if(23)
+			new /obj/item/weldingtool/abductor(loc)
+		if(24)
+			new /obj/structure/elite_tumor(loc)
+		if(25)
+			new /mob/living/simple_animal/hostile/retaliate/clown/clownhulk(loc)
+		if(26)
+			new /obj/item/clothing/shoes/winterboots/ice_boots(loc)
+		if(27)
+			new /obj/item/book/granter/spell/sacredflame(loc)
+		if(28)
+			new /mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/doom(loc)

code/game/objects/structures/lavaland/geyser.dm

@@ -0,0 +1,86 @@
+//If you look at the "geyser_soup" overlay icon_state, you'll see that the first frame has 25 ticks.
+//That's because the first 18~ ticks are completely skipped for some ungodly weird fucking byond reason
+
+/obj/structure/geyser
+	name = "geyser"
+	icon = 'icons/obj/lavaland/terrain.dmi'
+	icon_state = "geyser"
+	anchored = TRUE
+
+	var/erupting_state = null //set to null to get it greyscaled from "[icon_state]_soup". Not very usable with the whole random thing, but more types can be added if you change the spawn prob
+	var/activated = FALSE //whether we are active and generating chems
+	var/reagent_id = /datum/reagent/fuel/oil
+	var/potency = 2 //how much reagents we add every process (2 seconds)
+	var/max_volume = 500
+	var/start_volume = 50
+
+/obj/structure/geyser/proc/start_chemming()
+	activated = TRUE
+	create_reagents(max_volume, DRAINABLE)
+	reagents.add_reagent(reagent_id, start_volume)
+	START_PROCESSING(SSfluids, src) //It's main function is to be plumbed, so use SSfluids
+	if(erupting_state)
+		icon_state = erupting_state
+	else
+		var/mutable_appearance/I = mutable_appearance('icons/obj/lavaland/terrain.dmi', "[icon_state]_soup")
+		I.color = mix_color_from_reagents(reagents.reagent_list)
+		add_overlay(I)
+
+/obj/structure/geyser/process()
+	if(activated && reagents.total_volume <= reagents.maximum_volume) //this is also evaluated in add_reagent, but from my understanding proc calls are expensive
+		reagents.add_reagent(reagent_id, potency)
+
+/obj/structure/geyser/plunger_act(obj/item/plunger/P, mob/living/user, _reinforced)
+	if(!_reinforced)
+		to_chat(user, "<span class='warning'>The [P.name] isn't strong enough!</span>")
+		return
+	if(activated)
+		to_chat(user, "<span class'warning'>The [name] is already active!</span>")
+		return
+
+	to_chat(user, "<span class='notice'>You start vigorously plunging [src]!</span>")
+	if(do_after(user, 50 * P.plunge_mod, target = src) && !activated)
+		start_chemming()
+
+/obj/structure/geyser/random
+	erupting_state = null
+	var/list/options = list(/datum/reagent/clf3 = 10, /datum/reagent/water/hollowwater = 10, /datum/reagent/medicine/omnizine/protozine = 6, /datum/reagent/wittel = 1)
+
+/obj/structure/geyser/random/Initialize()
+	. = ..()
+	reagent_id = pickweight(options)
+
+/obj/item/plunger
+	name = "plunger"
+	desc = "It's a plunger for plunging."
+	icon = 'icons/obj/watercloset.dmi'
+	icon_state = "plunger"
+
+	slot_flags = ITEM_SLOT_MASK
+
+	var/plunge_mod = 1 //time*plunge_mod = total time we take to plunge an object
+	var/reinforced = FALSE //whether we do heavy duty stuff like geysers
+
+/obj/item/plunger/attack_obj(obj/O, mob/living/user)
+	if(!O.plunger_act(src, user, reinforced))
+		return ..()
+
+/obj/item/plunger/throw_impact(atom/hit_atom, datum/thrownthing/tt)
+	. = ..()
+	if(tt.target_zone != BODY_ZONE_HEAD)
+		return
+	if(iscarbon(hit_atom))
+		var/mob/living/carbon/H = hit_atom
+		if(!H.wear_mask)
+			H.equip_to_slot_if_possible(src, ITEM_SLOT_MASK)
+			H.visible_message("<span class='warning'>The plunger slams into [H]'s face!</span>", "<span class='warning'>The plunger suctions to your face!</span>")
+
+/obj/item/plunger/reinforced
+	name = "reinforced plunger"
+	desc = "It's an M. 7 Reinforced Plunger© for heavy duty plunging."
+	icon_state = "reinforced_plunger"
+
+	reinforced = TRUE
+	plunge_mod = 0.8
+
+	custom_premium_price = 1200

code/game/objects/structures/lavaland/necropolis_tendril.dm

@@ -25,6 +25,9 @@
 /obj/structure/spawner/lavaland/legion
 	mob_types = list(/mob/living/simple_animal/hostile/asteroid/hivelord/legion/tendril)
 
+/obj/structure/spawner/lavaland/icewatcher
+	mob_types = list(/mob/living/simple_animal/hostile/asteroid/basilisk/watcher/icewing)
+
 GLOBAL_LIST_INIT(tendrils, list())
 /obj/structure/spawner/lavaland/Initialize()
 	. = ..()
@@ -94,4 +97,4 @@ GLOBAL_LIST_INIT(tendrils, list())
 	for(var/turf/T in range(2,src))
 		if(!T.density)
 			T.TerraformTurf(/turf/open/chasm/lavaland, /turf/open/chasm/lavaland, flags = CHANGETURF_INHERIT_AIR)
-	qdel(src)
+	qdel(src)

code/game/turfs/closed.dm

@@ -134,6 +134,15 @@
 	icon = 'icons/turf/walls.dmi'
 	icon_state = "icerock"
 
+/turf/closed/indestructible/rock/snow/ice/ore
+	icon = 'icons/turf/walls/icerock_wall.dmi'
+	icon_state = "icerock"
+	smooth = SMOOTH_MORE|SMOOTH_BORDER
+	canSmoothWith = list (/turf/closed)
+	pixel_x = -4
+	pixel_y = -4
+
+
 /turf/closed/indestructible/paper
 	name = "thick paper wall"
 	desc = "A wall layered with impenetrable sheets of paper."

code/game/turfs/open.dm

@@ -110,6 +110,9 @@
 	if(prob(12))
 		icon_state = "necro[rand(2,3)]"
 
+/turf/open/indestructible/necropolis/ice
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
 /turf/open/indestructible/necropolis/air
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 

code/game/turfs/openspace/openspace.dm

@@ -146,3 +146,13 @@ GLOBAL_DATUM_INIT(openspace_backdrop_one_for_all, /atom/movable/openspace_backdr
 			PlaceOnTop(/turf/open/floor/plating, flags = CHANGETURF_INHERIT_AIR)
 			return TRUE
 	return FALSE
+
+/turf/open/openspace/icemoon
+	name = "ice chasm"
+	baseturfs = /turf/open/openspace/icemoon
+	can_cover_up = FALSE
+	can_build_on = FALSE
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
+/turf/open/openspace/icemoon/can_zFall(atom/movable/A, levels = 1, turf/target)
+	return TRUE

code/game/turfs/simulated/chasm.dm

@@ -88,6 +88,15 @@
 	light_power = 0.65 //less bright, too
 	light_color = LIGHT_COLOR_LAVA //let's just say you're falling into lava, that makes sense right
 
+// Chasms for Ice moon, with planetary atmos and glow
+/turf/open/chasm/icemoon
+	icon = 'icons/turf/floors/icechasms.dmi'
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+	planetary_atmos = TRUE
+	baseturfs = /turf/open/chasm/icemoon
+	light_range = 1.9
+	light_power = 0.65
+	light_color = LIGHT_COLOR_PURPLE
 
 // Chasms for the jungle, with planetary atmos and a different icon
 /turf/open/chasm/jungle
@@ -115,4 +124,4 @@
 	. = ..()
 	var/turf/T = safepick(get_area_turfs(/area/fabric_of_reality))
 	if(T)
-		set_target(T)
+		set_target(T)

code/game/turfs/simulated/floor.dm

@@ -48,7 +48,9 @@
 					"oldburning","light-on-r","light-on-y","light-on-g","light-on-b", "wood", "carpetsymbol", "carpetstar",
 					"carpetcorner", "carpetside", "carpet", "ironsand1", "ironsand2", "ironsand3", "ironsand4", "ironsand5",
 					"ironsand6", "ironsand7", "ironsand8", "ironsand9", "ironsand10", "ironsand11",
-					"ironsand12", "ironsand13", "ironsand14", "ironsand15")
+					"ironsand12", "ironsand13", "ironsand14", "ironsand15",
+					"snow", "snow0", "snow1", "snow2", "snow3", "snow4", "snow5", "snow6", "snow7", "snow8", "snow9", "snow10", "snow11", "snow12", "snow-ice", "snow_dug",
+					"unsmooth", "smooth", "1-i", "2-i", "3-i", "4-i", "1-n", "2-n", "3-s", "4-s", "1-w", "2-e", "3-w", "4-e", "1-nw", "2-ne", "3-sw", "4-se", "1-f", "2-f", "3-f", "4-f")
 	if(broken || burnt || (icon_state in icons_to_ignore_at_floor_init)) //so damaged/burned tiles or plating icons aren't saved as the default
 		icon_regular_floor = "floor"
 	else

code/game/turfs/simulated/floor/plating/asteroid.dm

@@ -13,11 +13,15 @@
 	barefootstep = FOOTSTEP_SAND
 	clawfootstep = FOOTSTEP_SAND
 	heavyfootstep = FOOTSTEP_GENERIC_HEAVY
+	/// Environment type for the turf
 	var/environment_type = "asteroid"
+	/// Base turf type to be created by the tunnel
 	var/turf_type = /turf/open/floor/plating/asteroid //Because caves do whacky shit to revert to normal
-	var/floor_variance = 20 //probability floor has a different icon state
+	/// Probability the floor has a different icon state
+	var/floor_variance = 20
 	attachment_holes = FALSE
 	var/obj/item/stack/digResult = /obj/item/stack/ore/glass/basalt
+	/// Whether the turf has been dug or not
 	var/dug
 
 /turf/open/floor/plating/asteroid/Initialize()
@@ -27,6 +31,7 @@
 	if(prob(floor_variance))
 		icon_state = "[environment_type][rand(0,12)]"
 
+/// Drops itemstack when dug and changes icon
 /turf/open/floor/plating/asteroid/proc/getDug()
 	new digResult(src, 5)
 	if(postdig_icon_change)
@@ -35,6 +40,7 @@
 			icon_state = "[environment_type]_dug"
 	dug = TRUE
 
+/// If the user can dig the turf
 /turf/open/floor/plating/asteroid/proc/can_dig(mob/user)
 	if(!dug)
 		return TRUE
@@ -135,16 +141,30 @@
 #define SPAWN_BUBBLEGUM 6
 
 /turf/open/floor/plating/asteroid/airless/cave
+	/// Length of the tunnel
 	var/length = 100
+	/// Mobs that can spawn in the tunnel, weighted list
 	var/list/mob_spawn_list
+	/// Megafauna that can spawn in the tunnel, weighted list
 	var/list/megafauna_spawn_list
+	/// Flora that can spawn in the tunnel, weighted list
 	var/list/flora_spawn_list
+	/// Turf type to choose when spawning in tunnel at 1% chance, weighted list
+	var/list/choose_turf_type
+	/// if the tunnel should keep being created
 	var/sanity = 1
+	/// Cave direction to move
 	var/forward_cave_dir = 1
+	/// Backwards cave direction for tracking
 	var/backward_cave_dir = 2
+	/// If the tunnel is moving backwards
 	var/going_backwards = TRUE
+	/// If this is a cave creating type
 	var/has_data = FALSE
+	/// The non-cave creating type
 	var/data_having_type = /turf/open/floor/plating/asteroid/airless/cave/has_data
+	/// Option tunnel width, wegihted list
+	var/list/pick_tunnel_width
 	turf_type = /turf/open/floor/plating/asteroid/airless
 
 /turf/open/floor/plating/asteroid/airless/cave/has_data //subtype for producing a tunnel with given data
@@ -163,6 +183,47 @@
 /turf/open/floor/plating/asteroid/airless/cave/volcanic/has_data //subtype for producing a tunnel with given data
 	has_data = TRUE
 
+/turf/open/floor/plating/asteroid/airless/cave/snow
+	gender = PLURAL
+	name = "snow"
+	desc = "Looks cold."
+	icon = 'icons/turf/snow.dmi'
+	baseturfs = /turf/open/floor/plating/asteroid/snow/icemoon
+	icon_state = "snow"
+	icon_plating = "snow"
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+	slowdown = 2
+	environment_type = "snow"
+	flags_1 = NONE
+	planetary_atmos = TRUE
+	burnt_states = list("snow_dug")
+	bullet_sizzle = TRUE
+	bullet_bounce_sound = null
+	digResult = /obj/item/stack/sheet/mineral/snow
+	mob_spawn_list = list(/mob/living/simple_animal/hostile/asteroid/wolf = 50, /obj/structure/spawner/ice_moon = 3, \
+						  /mob/living/simple_animal/hostile/asteroid/polarbear = 30, /obj/structure/spawner/ice_moon/polarbear = 3, \
+						  /mob/living/simple_animal/hostile/asteroid/hivelord/legion/snow = 50, /mob/living/simple_animal/hostile/asteroid/goldgrub = 10)
+
+	flora_spawn_list = list(/obj/structure/flora/tree/pine = 2, /obj/structure/flora/grass/both = 12)
+	data_having_type = /turf/open/floor/plating/asteroid/airless/cave/snow/has_data
+	turf_type = /turf/open/floor/plating/asteroid/snow/icemoon
+	choose_turf_type = list(/turf/open/floor/plating/asteroid/snow/icemoon = 19, /turf/open/floor/plating/ice/icemoon = 1)
+	pick_tunnel_width = list("1" = 6, "2" = 1)
+
+/turf/open/floor/plating/asteroid/airless/cave/snow/underground
+	mob_spawn_list = list(/mob/living/simple_animal/hostile/asteroid/ice_demon = 50, /obj/structure/spawner/ice_moon/demonic_portal = 3, \
+						  /mob/living/simple_animal/hostile/asteroid/ice_whelp = 30, /obj/structure/spawner/ice_moon/demonic_portal/ice_whelp = 3, \
+						  /mob/living/simple_animal/hostile/asteroid/hivelord/legion/snow = 50, /obj/structure/spawner/ice_moon/demonic_portal/snowlegion = 3)
+	flora_spawn_list = list(/obj/structure/flora/rock/icy = 6, /obj/structure/flora/rock/pile/icy = 6)
+	data_having_type = /turf/open/floor/plating/asteroid/airless/cave/snow/underground/has_data
+	choose_turf_type = null
+
+/turf/open/floor/plating/asteroid/airless/cave/snow/has_data //subtype for producing a tunnel with given data
+	has_data = TRUE
+
+/turf/open/floor/plating/asteroid/airless/cave/snow/underground/has_data //subtype for producing a tunnel with given data
+	has_data = TRUE
+
 /turf/open/floor/plating/asteroid/airless/cave/Initialize()
 	if (!mob_spawn_list)
 		mob_spawn_list = list(/mob/living/simple_animal/hostile/asteroid/goldgrub = 1, /mob/living/simple_animal/hostile/asteroid/goliath = 5, /mob/living/simple_animal/hostile/asteroid/basilisk = 4, /mob/living/simple_animal/hostile/asteroid/hivelord = 3)
@@ -175,6 +236,7 @@
 	if(!has_data)
 		produce_tunnel_from_data()
 
+/// Sets the tunnel length and direction
 /turf/open/floor/plating/asteroid/airless/cave/proc/get_cave_data(set_length, exclude_dir = -1)
 	// If set_length (arg1) isn't defined, get a random length; otherwise assign our length to the length arg.
 	if(!set_length)
@@ -187,6 +249,7 @@
 	// Get the opposite direction of our facing direction
 	backward_cave_dir = angle2dir(dir2angle(forward_cave_dir) + 180)
 
+/// Gets the tunnel length and direction then makes the tunnel
 /turf/open/floor/plating/asteroid/airless/cave/proc/produce_tunnel_from_data(tunnel_length, excluded_dir = -1)
 	get_cave_data(tunnel_length, excluded_dir)
 	// Make our tunnels
@@ -196,10 +259,22 @@
 	// Kill ourselves by replacing ourselves with a normal floor.
 	SpawnFloor(src)
 
+/**
+  * Makes the tunnel and spawns things inside of it
+  *
+  * Picks a tunnel width for the tunnel and then starts spawning turfs in the direction it moves in
+  * Can randomly change directions of the tunnel, stops if it hits the edge of the map, or a no tunnel area
+  * Can randomly make new tunnels out of itself
+  *
+  */
 /turf/open/floor/plating/asteroid/airless/cave/proc/make_tunnel(dir)
 	var/turf/closed/mineral/tunnel = src
 	var/next_angle = pick(45, -45)
 
+	var/tunnel_width = 1
+	if(pick_tunnel_width)
+		tunnel_width = text2num(pickweight(pick_tunnel_width))
+
 	for(var/i = 0; i < length; i++)
 		if(!sanity)
 			break
@@ -210,9 +285,11 @@
 
 		// Expand the edges of our tunnel
 		for(var/edge_angle in L)
-			var/turf/closed/mineral/edge = get_step(tunnel, angle2dir(dir2angle(dir) + edge_angle))
-			if(istype(edge))
-				SpawnFloor(edge)
+			var/turf/closed/mineral/edge = tunnel
+			for(var/current_tunnel_width = 1 to tunnel_width)
+				edge = get_step(edge, angle2dir(dir2angle(dir) + edge_angle))
+				if(istype(edge))
+					SpawnFloor(edge)
 
 		if(!sanity)
 			break
@@ -223,9 +300,12 @@
 		if(istype(tunnel))
 			// Small chance to have forks in our tunnel; otherwise dig our tunnel.
 			if(i > 3 && prob(20))
-				if(istype(tunnel.loc, /area/mine/explored) || (istype(tunnel.loc, /area/lavaland/surface/outdoors) && !istype(tunnel.loc, /area/lavaland/surface/outdoors/unexplored)))
-					sanity = 0
-					break
+				if(isarea(tunnel.loc))
+
+					var/area/A = tunnel.loc
+					if(!A.tunnel_allowed)
+						sanity = 0
+						break
 				var/turf/open/floor/plating/asteroid/airless/cave/C = tunnel.ChangeTurf(data_having_type, null, CHANGETURF_IGNORE_AIR)
 				C.going_backwards = FALSE
 				C.produce_tunnel_from_data(rand(10, 15), dir)
@@ -241,26 +321,35 @@
 			setDir(angle2dir(dir2angle(dir) )+ next_angle)
 
 
+/// Spawns the floor of the tunnel and any type of structure or mob it can have
 /turf/open/floor/plating/asteroid/airless/cave/proc/SpawnFloor(turf/T)
-	for(var/S in RANGE_TURFS(1, src))
-		var/turf/NT = S
-		if(!NT || isspaceturf(NT) || istype(NT.loc, /area/mine/explored) || (istype(NT.loc, /area/lavaland/surface/outdoors) && !istype(NT.loc, /area/lavaland/surface/outdoors/unexplored)))
-			sanity = 0
-			break
-	if(!sanity)
+	var/area/A = T.loc
+	if(!A.tunnel_allowed)
+		sanity = 0
 		return
-	SpawnFlora(T)
-
-	SpawnMonster(T)
+	if(choose_turf_type)
+		turf_type = pickweight(choose_turf_type)
+	if(turf_type == initial(turf_type)) // Don't spawn different turf types under flora or terrain
+		var/spawned_flora = FALSE
+		if(is_mining_level(z))
+			spawned_flora = SpawnFlora(T)
+		if(!spawned_flora) // no rocks beneath mob spawners / mobs.
+			SpawnMonster(T)
 	T.ChangeTurf(turf_type, null, CHANGETURF_IGNORE_AIR)
 
+/// Spawns a random mob or megafauna in the tunnel
 /turf/open/floor/plating/asteroid/airless/cave/proc/SpawnMonster(turf/T)
+	if(!isarea(loc))
+		return
+	var/area/A = loc
 	if(prob(30))
-		if(istype(loc, /area/mine/explored) || !istype(loc, /area/lavaland/surface/outdoors/unexplored))
+		if(!A.mob_spawn_allowed)
 			return
 		var/randumb = pickweight(mob_spawn_list)
+		if(!randumb)
+			return
 		while(randumb == SPAWN_MEGAFAUNA)
-			if(istype(loc, /area/lavaland/surface/outdoors/unexplored/danger)) //this is danger. it's boss time.
+			if(A.megafauna_spawn_allowed && megafauna_spawn_list && megafauna_spawn_list.len) //this is danger. it's boss time.
 				var/maybe_boss = pickweight(megafauna_spawn_list)
 				if(megafauna_spawn_list[maybe_boss])
 					randumb = maybe_boss
@@ -278,22 +367,26 @@
 				return //prevents tendrils spawning in each other's collapse range
 
 		new randumb(T)
-	return
+	return TRUE
 
 #undef SPAWN_MEGAFAUNA
 #undef SPAWN_BUBBLEGUM
 
+/// Spawns a random flora in the tunnel, can spawn clumps of them.
 /turf/open/floor/plating/asteroid/airless/cave/proc/SpawnFlora(turf/T)
 	if(prob(12))
-		if(istype(loc, /area/mine/explored) || istype(loc, /area/lavaland/surface/outdoors/explored))
-			return
+		if(isarea(loc))
+			var/area/A = loc
+			if(!A.flora_allowed)
+				return
 		var/randumb = pickweight(flora_spawn_list)
-		for(var/obj/structure/flora/ash/F in range(4, T)) //Allows for growing patches, but not ridiculous stacks of flora
+		if(!randumb)
+			return
+		for(var/obj/structure/flora/F in range(4, T)) // Allows for growing patches, but not ridiculous stacks of flora
 			if(!istype(F, randumb))
 				return
 		new randumb(T)
-
-
+		return TRUE
 
 /turf/open/floor/plating/asteroid/snow
 	gender = PLURAL
@@ -322,6 +415,15 @@
 		return TRUE
 	return FALSE
 
+/turf/open/floor/plating/asteroid/snow/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
+/turf/open/lava/plasma/ice_moon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+	baseturfs = /turf/open/lava/plasma/ice_moon
+	planetary_atmos = TRUE
+
 /turf/open/floor/plating/asteroid/snow/ice
 	name = "icy snow"
 	desc = "Looks colder."
@@ -336,6 +438,15 @@
 	clawfootstep = FOOTSTEP_HARD_CLAW
 	heavyfootstep = FOOTSTEP_GENERIC_HEAVY
 
+/turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+	planetary_atmos = TRUE
+
+/turf/open/floor/plating/asteroid/snow/ice/icemoon/solarpanel
+	icon = 'icons/turf/floors.dmi'
+	icon_state = "solarpanel"
+
 /turf/open/floor/plating/asteroid/snow/ice/burn_tile()
 	return FALSE
 
@@ -347,4 +458,4 @@
 
 /turf/open/floor/plating/asteroid/snow/atmosphere
 	initial_gas_mix = FROZEN_ATMOS
-	planetary_atmos = FALSE
+	planetary_atmos = FALSE

code/game/turfs/simulated/floor/plating/misc_plating.dm

@@ -3,6 +3,10 @@
 	icon_state = "plating"
 	initial_gas_mix = AIRLESS_ATMOS
 
+/turf/open/floor/plating/icemoon
+	icon_state = "plating"
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
 /turf/open/floor/plating/abductor
 	name = "alien floor"
 	icon_state = "alienpod1"
@@ -209,6 +213,8 @@
 /turf/open/floor/plating/ice/burn_tile()
 	return
 
+/turf/open/floor/plating/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 /turf/open/floor/plating/snowed
 	name = "snowed-over plating"
@@ -240,4 +246,6 @@
 /turf/open/floor/plating/snowed/temperatre
 	temperature = 255.37
 
+/turf/open/floor/plating/snowed/smoothed/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 

code/game/turfs/simulated/minerals.dm

@@ -147,6 +147,11 @@
 	var/mineralChance = 13
 	var/display_icon_state = "rock"
 
+/turf/closed/mineral/random/more_caves
+	mineralSpawnChanceList = list(/turf/closed/mineral/uranium = 5, /turf/closed/mineral/diamond = 1, /turf/closed/mineral/gold = 10,
+		/turf/closed/mineral/silver = 12, /turf/closed/mineral/plasma = 20, /turf/closed/mineral/iron = 40, /turf/closed/mineral/titanium = 11,
+		/turf/closed/mineral/gibtonite = 4, /turf/open/floor/plating/asteroid/airless/cave = 15, /turf/closed/mineral/bscrystal = 1)
+
 /turf/closed/mineral/random/Initialize()
 
 	mineralSpawnChanceList = typelist("mineralSpawnChanceList", mineralSpawnChanceList)
@@ -195,11 +200,27 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 	mineralSpawnChanceList = list(
 		/turf/closed/mineral/uranium/volcanic = 35, /turf/closed/mineral/diamond/volcanic = 30, /turf/closed/mineral/gold/volcanic = 45, /turf/closed/mineral/titanium/volcanic = 45,
 		/turf/closed/mineral/silver/volcanic = 50, /turf/closed/mineral/plasma/volcanic = 50, /turf/closed/mineral/bscrystal/volcanic = 20)
 
+/turf/closed/mineral/random/high_chance/snow
+	name = "snowy mountainside"
+	icon = 'icons/turf/mining.dmi'
+	smooth_icon = 'icons/turf/walls/mountain_wall.dmi'
+	icon_state = "mountainrock"
+	smooth = SMOOTH_MORE|SMOOTH_BORDER
+	canSmoothWith = list (/turf/closed)
+	defer_change = TRUE
+	environment_type = "snow"
+	turf_type = /turf/open/floor/plating/asteroid/snow/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/ice/icemoon = 35, /turf/closed/mineral/diamond/ice/icemoon = 30, /turf/closed/mineral/gold/ice/icemoon = 45, /turf/closed/mineral/titanium/ice/icemoon = 45,
+		/turf/closed/mineral/silver/ice/icemoon = 50, /turf/closed/mineral/plasma/ice/icemoon = 50, /turf/closed/mineral/bscrystal/ice/icemoon = 20)
+
 /turf/closed/mineral/random/high_chance/earth_like
 	icon_state = "rock_highchance_oxy"
 	turf_type = /turf/open/floor/plating/asteroid
@@ -236,7 +257,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 	mineralChance = 10
 	mineralSpawnChanceList = list(
@@ -244,6 +265,36 @@
 		/turf/closed/mineral/silver/volcanic = 12, /turf/closed/mineral/plasma/volcanic = 20, /turf/closed/mineral/iron/volcanic = 40,
 		/turf/closed/mineral/gibtonite/volcanic = 4, /turf/open/floor/plating/asteroid/airless/cave/volcanic = 1, /turf/closed/mineral/bscrystal/volcanic = 1)
 
+/turf/closed/mineral/random/volcanic/more_caves
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/volcanic = 5, /turf/closed/mineral/diamond/volcanic = 1, /turf/closed/mineral/gold/volcanic = 10, /turf/closed/mineral/titanium/volcanic = 11,
+		/turf/closed/mineral/silver/volcanic = 12, /turf/closed/mineral/plasma/volcanic = 20, /turf/closed/mineral/iron/volcanic = 40,
+		/turf/closed/mineral/gibtonite/volcanic = 4, /turf/open/floor/plating/asteroid/airless/cave/volcanic = 15, /turf/closed/mineral/bscrystal/volcanic = 1)
+
+/turf/closed/mineral/random/snow
+	name = "snowy mountainside"
+	icon = 'icons/turf/mining.dmi'
+	smooth_icon = 'icons/turf/walls/mountain_wall.dmi'
+	icon_state = "mountainrock"
+	smooth = SMOOTH_MORE|SMOOTH_BORDER
+	canSmoothWith = list (/turf/closed)
+	defer_change = TRUE
+	environment_type = "snow"
+	turf_type = /turf/open/floor/plating/asteroid/snow/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
+	mineralChance = 10
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/ice/icemoon = 5, /turf/closed/mineral/diamond/ice/icemoon = 1, /turf/closed/mineral/gold/ice/icemoon = 10, /turf/closed/mineral/titanium/ice/icemoon = 11,
+		/turf/closed/mineral/silver/ice/icemoon = 12, /turf/closed/mineral/plasma/ice/icemoon = 20, /turf/closed/mineral/iron/ice/icemoon = 40,
+		/turf/closed/mineral/gibtonite/ice/icemoon = 4, /turf/open/floor/plating/asteroid/airless/cave/snow = 1, /turf/closed/mineral/bscrystal/ice/icemoon = 1)
+
+/turf/closed/mineral/random/snow/no_caves
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/ice/icemoon = 5, /turf/closed/mineral/diamond/ice/icemoon = 1, /turf/closed/mineral/gold/ice/icemoon = 10, /turf/closed/mineral/titanium/ice/icemoon = 11,
+		/turf/closed/mineral/silver/ice/icemoon = 12, /turf/closed/mineral/plasma/ice/icemoon = 20, /turf/closed/mineral/iron/ice/icemoon = 40,
+		/turf/closed/mineral/gibtonite/ice/icemoon = 4, /turf/closed/mineral/bscrystal/ice/icemoon = 1)
 
 /turf/closed/mineral/random/labormineral
 	mineralSpawnChanceList = list(
@@ -252,18 +303,51 @@
 		/turf/closed/mineral/gibtonite = 2)
 	icon_state = "rock_labor"
 
+/turf/closed/mineral/random/snow/underground
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/ice/icemoon = 5, /turf/closed/mineral/diamond/ice/icemoon = 1, /turf/closed/mineral/gold/ice/icemoon = 10, /turf/closed/mineral/titanium/ice/icemoon = 11,
+		/turf/closed/mineral/silver/ice/icemoon = 12, /turf/closed/mineral/plasma/ice/icemoon = 20, /turf/closed/mineral/iron/ice/icemoon = 40,
+		/turf/closed/mineral/gibtonite/ice/icemoon = 4, /turf/open/floor/plating/asteroid/airless/cave/snow/underground = 1, /turf/closed/mineral/bscrystal/ice/icemoon = 1)
+
+/turf/closed/mineral/random/snow/more_caves
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/ice/icemoon = 5, /turf/closed/mineral/diamond/ice/icemoon = 1, /turf/closed/mineral/gold/ice/icemoon = 10, /turf/closed/mineral/titanium/ice/icemoon = 11,
+		/turf/closed/mineral/silver/ice/icemoon = 12, /turf/closed/mineral/plasma/ice/icemoon = 20, /turf/closed/mineral/iron/ice/icemoon = 40,
+		/turf/closed/mineral/gibtonite/ice/icemoon = 4, /turf/open/floor/plating/asteroid/airless/cave/snow = 15, /turf/closed/mineral/bscrystal/ice/icemoon = 1)
+
 
 /turf/closed/mineral/random/labormineral/volcanic
 	environment_type = "basalt"
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 	mineralSpawnChanceList = list(
 		/turf/closed/mineral/uranium/volcanic = 3, /turf/closed/mineral/diamond/volcanic = 1, /turf/closed/mineral/gold/volcanic = 8, /turf/closed/mineral/titanium/volcanic = 8,
 		/turf/closed/mineral/silver/volcanic = 20, /turf/closed/mineral/plasma/volcanic = 30, /turf/closed/mineral/bscrystal/volcanic = 1, /turf/closed/mineral/gibtonite/volcanic = 2,
 		/turf/closed/mineral/iron/volcanic = 95)
 
+//Subtypes for placing ores manually.
+/turf/closed/mineral/random/labormineral/ice
+	name = "snowy mountainside"
+	icon = 'icons/turf/mining.dmi'
+	smooth_icon = 'icons/turf/walls/mountain_wall.dmi'
+	icon_state = "mountainrock"
+	smooth = SMOOTH_MORE|SMOOTH_BORDER
+	canSmoothWith = list (/turf/closed)
+	defer_change = TRUE
+	environment_type = "snow"
+	turf_type = /turf/open/floor/plating/asteroid/snow/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
+	defer_change = TRUE
+	mineralSpawnChanceList = list(
+		/turf/closed/mineral/uranium/ice/icemoon = 3, /turf/closed/mineral/diamond/ice/icemoon = 1, /turf/closed/mineral/gold/ice/icemoon = 8, /turf/closed/mineral/titanium/ice/icemoon = 8,
+		/turf/closed/mineral/silver/ice/icemoon = 20, /turf/closed/mineral/plasma/ice/icemoon = 30, /turf/closed/mineral/bscrystal/ice/icemoon = 1, /turf/closed/mineral/gibtonite/ice/icemoon = 2,
+		/turf/closed/mineral/iron/ice/icemoon = 95)
+
+
 
 /turf/closed/mineral/iron
 	mineralType = /obj/item/stack/ore/iron
@@ -294,6 +378,11 @@
 	initial_gas_mix = FROZEN_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/iron/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
 
 /turf/closed/mineral/uranium
 	mineralType = /obj/item/stack/ore/uranium
@@ -306,7 +395,21 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
+
+/turf/closed/mineral/uranium/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_Uranium"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/uranium/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 /turf/closed/mineral/uranium/earth_like
 	icon_state = "rock_oxy"
@@ -327,7 +430,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/diamond/earth_like
 	icon_state = "rock_oxy"
@@ -345,6 +448,11 @@
 	initial_gas_mix = FROZEN_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/diamond/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
 
 /turf/closed/mineral/gold
 	mineralType = /obj/item/stack/ore/gold
@@ -357,7 +465,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/gold/earth_like
 	icon_state = "rock_oxy"
@@ -366,6 +474,19 @@
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/gold/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_gold"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/gold/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 /turf/closed/mineral/silver
 	mineralType = /obj/item/stack/ore/silver
@@ -378,7 +499,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/silver/earth_like
 	icon_state = "rock_oxy"
@@ -387,6 +508,19 @@
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/silver/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_silver"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/silver/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 /turf/closed/mineral/titanium
 	mineralType = /obj/item/stack/ore/titanium
@@ -399,7 +533,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/titanium/earth_like
 	icon_state = "rock_oxy"
@@ -408,6 +542,19 @@
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/titanium/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_titanium"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/titanium/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 /turf/closed/mineral/plasma
 	mineralType = /obj/item/stack/ore/plasma
@@ -420,7 +567,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/plasma/earth_like
 	icon_state = "rock_oxy"
@@ -438,6 +585,10 @@
 	initial_gas_mix = FROZEN_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/plasma/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 
 /turf/closed/mineral/bananium
@@ -454,6 +605,21 @@
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/bananium/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_Bananium"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/bananium/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
+
 /turf/closed/mineral/bscrystal
 	mineralType = /obj/item/stack/ore/bluespace_crystal
 	mineralAmt = 1
@@ -466,7 +632,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/bscrystal/earth_like
 	icon_state = "rock_oxy"
@@ -475,6 +641,19 @@
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 	defer_change = TRUE
 
+/turf/closed/mineral/bscrystal/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_BScrystal"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/bscrystal/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
 
 /turf/closed/mineral/volcanic
 	environment_type = "basalt"
@@ -486,7 +665,7 @@
 	environment_type = "basalt"
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/earth_like
 	icon_state = "rock_oxy"
@@ -506,7 +685,7 @@
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
 	environment_type = "waste"
 	turf_type = /turf/open/floor/plating/ashplanet/rocky
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/snowmountain
 	name = "snowy mountainside"
@@ -521,6 +700,11 @@
 	turf_type = /turf/open/floor/plating/asteroid/snow
 	defer_change = TRUE
 
+/turf/closed/mineral/snowmountain/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
 /turf/closed/mineral/snowmountain/cavern
 	name = "ice cavern rock"
 	icon = 'icons/turf/mining.dmi'
@@ -532,6 +716,11 @@
 	environment_type = "snow_cavern"
 	turf_type = /turf/open/floor/plating/asteroid/snow/ice
 
+/turf/closed/mineral/snowmountain/cavern/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS
+
 //GIBTONITE
 
 /turf/closed/mineral/gibtonite
@@ -634,7 +823,7 @@
 	turf_type = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	baseturfs = /turf/open/floor/plating/asteroid/basalt/lava_land_surface
 	initial_gas_mix = LAVALAND_DEFAULT_ATMOS
-	defer_change = 1
+	defer_change = TRUE
 
 /turf/closed/mineral/gibtonite/earth_like
 	icon_state = "rock_oxy"
@@ -642,3 +831,18 @@
 	baseturfs = /turf/open/floor/plating/asteroid
 	initial_gas_mix = OPENTURF_DEFAULT_ATMOS
 	defer_change = TRUE
+
+	
+/turf/closed/mineral/gibtonite/ice
+	environment_type = "snow_cavern"
+	icon_state = "icerock_Gibtonite"
+	smooth_icon = 'icons/turf/walls/icerock_wall.dmi'
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice
+	initial_gas_mix = FROZEN_ATMOS
+	defer_change = TRUE
+
+/turf/closed/mineral/gibtonite/ice/icemoon
+	turf_type = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	baseturfs = /turf/open/floor/plating/asteroid/snow/ice/icemoon
+	initial_gas_mix = ICEMOON_DEFAULT_ATMOS