GS13NG/code/game/turfs/space/space.dm

/turf/open/space
	icon = 'icons/turf/space.dmi'
	icon_state = "0"
	name = "\proper space"
	intact = 0

	temperature = TCMB
	thermal_conductivity = OPEN_HEAT_TRANSFER_COEFFICIENT
	heat_capacity = 700000

	var/destination_z
	var/destination_x
	var/destination_y

	var/static/datum/gas_mixture/immutable/space/space_gas = new
	plane = PLANE_SPACE
	layer = SPACE_LAYER
	light_power = 0.25
	dynamic_lighting = DYNAMIC_LIGHTING_DISABLED
	bullet_bounce_sound = null


/turf/open/space/basic/New()	//Do not convert to Initialize
	//This is used to optimize the map loader
	return

/turf/open/space/Initialize()
	icon_state = SPACE_ICON_STATE
	air = space_gas
	update_air_ref()
	vis_contents.Cut() //removes inherited overlays
	visibilityChanged()

	if(flags_1 & INITIALIZED_1)
		stack_trace("Warning: [src]([type]) initialized multiple times!")
	flags_1 |= INITIALIZED_1

	var/area/A = loc
	if(!IS_DYNAMIC_LIGHTING(src) && IS_DYNAMIC_LIGHTING(A))
		add_overlay(/obj/effect/fullbright)

	if(requires_activation)
		SSair.add_to_active(src)

	if (light_power && light_range)
		update_light()

	if (opacity)
		has_opaque_atom = TRUE

	ComponentInitialize()

	return INITIALIZE_HINT_NORMAL

//ATTACK GHOST IGNORING PARENT RETURN VALUE
/turf/open/space/attack_ghost(mob/dead/observer/user)
	if(destination_z)
		var/turf/T = locate(destination_x, destination_y, destination_z)
		user.forceMove(T)

/turf/open/space/Initalize_Atmos(times_fired)
	return

/turf/open/space/TakeTemperature(temp)

/turf/open/space/RemoveLattice()
	return

/turf/open/space/AfterChange()
	..()
	atmos_overlay_types = null

/turf/open/space/Assimilate_Air()
	return

/turf/open/space/proc/update_starlight()
	if(CONFIG_GET(flag/starlight))
		for(var/t in RANGE_TURFS(1,src)) //RANGE_TURFS is in code\__HELPERS\game.dm
			if(isspaceturf(t))
				//let's NOT update this that much pls
				continue
			set_light(2)
			return
		set_light(0)

/turf/open/space/attack_paw(mob/user)
	return attack_hand(user)

/turf/open/space/proc/CanBuildHere()
	return TRUE

/turf/open/space/handle_slip(mob/living/carbon/C, knockdown_amount, obj/O, lube)
	if(lube & FLYING_DOESNT_HELP)
		return ..()

/turf/open/space/attackby(obj/item/C, mob/user, params)
	..()
	if(!CanBuildHere())
		return
	if(istype(C, /obj/item/stack/rods))
		var/obj/item/stack/rods/R = C
		var/obj/structure/lattice/L = locate(/obj/structure/lattice, src)
		var/obj/structure/lattice/catwalk/W = locate(/obj/structure/lattice/catwalk, src)
		if(W)
			to_chat(user, "<span class='warning'>There is already a catwalk here!</span>")
			return
		if(L)
			if(R.use(1))
				to_chat(user, "<span class='notice'>You construct a catwalk.</span>")
				playsound(src, 'sound/weapons/genhit.ogg', 50, 1)
				new/obj/structure/lattice/catwalk(src)
			else
				to_chat(user, "<span class='warning'>You need two rods to build a catwalk!</span>")
			return
		if(R.use(1))
			to_chat(user, "<span class='notice'>You construct a lattice.</span>")
			playsound(src, 'sound/weapons/genhit.ogg', 50, 1)
			ReplaceWithLattice()
		else
			to_chat(user, "<span class='warning'>You need one rod to build a lattice.</span>")
		return
	if(istype(C, /obj/item/stack/tile/plasteel))
		var/obj/structure/lattice/L = locate(/obj/structure/lattice, src)
		if(L)
			var/obj/item/stack/tile/plasteel/S = C
			if(S.use(1))
				qdel(L)
				playsound(src, 'sound/weapons/genhit.ogg', 50, 1)
				to_chat(user, "<span class='notice'>You build a floor.</span>")
				PlaceOnTop(/turf/open/floor/plating, flags = CHANGETURF_INHERIT_AIR)
			else
				to_chat(user, "<span class='warning'>You need one floor tile to build a floor!</span>")
		else
			to_chat(user, "<span class='warning'>The plating is going to need some support! Place metal rods first.</span>")

/turf/open/space/Entered(atom/movable/A)
	..()
	if ((!(A) || src != A.loc))
		return

	if(destination_z && destination_x && destination_y && !(A.pulledby || !A.can_be_z_moved))
		var/tx = destination_x
		var/ty = destination_y
		var/turf/DT = locate(tx, ty, destination_z)
		var/itercount = 0
		while(DT.density || istype(DT.loc,/area/shuttle)) // Extend towards the center of the map, trying to look for a better place to arrive
			if (itercount++ >= 100)
				log_game("SPACE Z-TRANSIT ERROR: Could not find a safe place to land [A] within 100 iterations.")
				break
			if (tx < 128)
				tx++
			else
				tx--
			if (ty < 128)
				ty++
			else
				ty--
			DT = locate(tx, ty, destination_z)

		var/atom/movable/pulling = A.pulling
		var/atom/movable/puller = A
		A.forceMove(DT)

		while (pulling != null)
			var/next_pulling = pulling.pulling
			if(next_pulling == pulling)
				break		// no loops

			var/turf/T = get_step(puller.loc, turn(puller.dir, 180))
			pulling.can_be_z_moved = FALSE
			pulling.forceMove(T)
			puller.start_pulling(pulling)
			pulling.can_be_z_moved = TRUE

			puller = pulling
			pulling = next_pulling

		//now we're on the new z_level, proceed the space drifting
		stoplag()//Let a diagonal move finish, if necessary
		A.newtonian_move(A.inertia_dir)
		A.inertia_moving = TRUE


/turf/open/space/Exited(atom/movable/AM, atom/OldLoc)
	. = ..()
	var/turf/old = get_turf(OldLoc)
	if(!isspaceturf(old) && ismob(AM))
		var/mob/M = AM
		M.update_gravity(M.mob_has_gravity())

/turf/open/space/MakeSlippery(wet_setting, min_wet_time, wet_time_to_add, max_wet_time, permanent)
	return

/turf/open/space/singularity_act()
	return

/turf/open/space/can_have_cabling()
	if(locate(/obj/structure/lattice/catwalk, src))
		return 1
	return 0

/turf/open/space/is_transition_turf()
	if(destination_x || destination_y || destination_z)
		return 1


/turf/open/space/acid_act(acidpwr, acid_volume)
	return 0

/turf/open/space/get_smooth_underlay_icon(mutable_appearance/underlay_appearance, turf/asking_turf, adjacency_dir)
	underlay_appearance.icon = 'icons/turf/space.dmi'
	underlay_appearance.icon_state = SPACE_ICON_STATE
	underlay_appearance.plane = PLANE_SPACE
	return TRUE


/turf/open/space/rcd_vals(mob/user, obj/item/construction/rcd/the_rcd)
	if(!CanBuildHere())
		return FALSE

	switch(the_rcd.mode)
		if(RCD_FLOORWALL)
			var/obj/structure/lattice/L = locate(/obj/structure/lattice, src)
			if(L)
				return list("mode" = RCD_FLOORWALL, "delay" = 0, "cost" = 1)
			else
				return list("mode" = RCD_FLOORWALL, "delay" = 0, "cost" = 3)
	return FALSE

/turf/open/space/rcd_act(mob/user, obj/item/construction/rcd/the_rcd, passed_mode)
	switch(passed_mode)
		if(RCD_FLOORWALL)
			to_chat(user, "<span class='notice'>You build a floor.</span>")
			PlaceOnTop(/turf/open/floor/plating, flags = CHANGETURF_INHERIT_AIR)
			return TRUE
	return FALSE

/turf/open/space/ReplaceWithLattice()
	var/dest_x = destination_x
	var/dest_y = destination_y
	var/dest_z = destination_z
	..()
	destination_x = dest_x
	destination_y = dest_y
	destination_z = dest_z


/turf/open/space/transparent
	baseturfs = /turf/open/space/transparent/openspace
	intact = FALSE //this means wires go on top

/turf/open/space/transparent/Initialize() // handle plane and layer here so that they don't cover other obs/turfs in Dream Maker
	..()
	plane = OPENSPACE_PLANE
	layer = OPENSPACE_LAYER
	icon_state = "transparent"

	return INITIALIZE_HINT_LATELOAD

/turf/open/space/transparent/LateInitialize()
	update_multiz(TRUE, TRUE)

/turf/open/space/transparent/Destroy()
	vis_contents.len = 0
	return ..()

/turf/open/space/transparent/update_multiz(prune_on_fail = FALSE, init = FALSE)
	. = ..()
	var/turf/T = below()
	if(!T)
		vis_contents.len = 0
		if(!show_bottom_level() && prune_on_fail) //If we cant show whats below, and we prune on fail, change the turf to space as a fallback
			ChangeTurf(/turf/open/space)
		return FALSE
	if(init)
		vis_contents += T
	return TRUE

/turf/open/space/transparent/multiz_turf_del(turf/T, dir)
	if(dir != DOWN)
		return
	update_multiz()

/turf/open/space/transparent/multiz_turf_new(turf/T, dir)
	if(dir != DOWN)
		return
	update_multiz()

///Called when there is no real turf below this turf
/turf/open/space/transparent/proc/show_bottom_level()
	var/turf/path = SSmapping.level_trait(z, ZTRAIT_BASETURF) || /turf/open/space
	if(!ispath(path))
		path = text2path(path)
		if(!ispath(path))
			warning("Z-level [z] has invalid baseturf '[SSmapping.level_trait(z, ZTRAIT_BASETURF)]'")
			path = /turf/open/space
	var/mutable_appearance/underlay_appearance = mutable_appearance(initial(path.icon), initial(path.icon_state), layer = TURF_LAYER, plane = PLANE_SPACE)
	underlays += underlay_appearance
	return TRUE

/turf/open/space/transparent/openspace
	name = "open space"
	desc = "Watch your step!"
	icon_state = "transparent"
	baseturfs = /turf/open/space/transparent/openspace
	CanAtmosPassVertical = ATMOS_PASS_YES
	//mouse_opacity = MOUSE_OPACITY_TRANSPARENT

///No bottom level for openspace.
/turf/open/space/transparent/openspace/show_bottom_level()
	return FALSE

/turf/open/space/transparent/openspace/Initialize() // handle plane and layer here so that they don't cover other obs/turfs in Dream Maker
	. = ..()

	icon_state = "transparent"

	vis_contents += GLOB.openspace_backdrop_one_for_all //Special grey square for projecting backdrop darkness filter on it.

/turf/open/space/transparent/openspace/zAirIn()
	return TRUE

/turf/open/space/transparent/openspace/zAirOut()
	return TRUE

/turf/open/space/transparent/openspace/zPassIn(atom/movable/A, direction, turf/source)
	if(direction == DOWN)
		for(var/obj/O in contents)
			if(O.obj_flags & BLOCK_Z_IN_DOWN)
				return FALSE
		return TRUE
	if(direction == UP)
		for(var/obj/O in contents)
			if(O.obj_flags & BLOCK_Z_IN_UP)
				return FALSE
		return TRUE
	return FALSE

/turf/open/space/transparent/openspace/zPassOut(atom/movable/A, direction, turf/destination)
	if(A.anchored)
		return FALSE
	if(direction == DOWN)
		for(var/obj/O in contents)
			if(O.obj_flags & BLOCK_Z_OUT_DOWN)
				return FALSE
		return TRUE
	if(direction == UP)
		for(var/obj/O in contents)
			if(O.obj_flags & BLOCK_Z_OUT_UP)
				return FALSE
		return TRUE
	return FALSE