Adds: The C-Foam launcher (#25738)

* The start

* Getting a bit further

* Slight ammo casing update

* Istype helper and foam blockage

* Adds status effect

* Foam blockage and status effect fixes

* Autolathe ammo + stun

* aaaaaaaa

* Adds uplink item

* Actual slowdown

* Makes attacking a bit faster again

* Ammo increase to 12

* Sirryan review

* Adds sprites - almost working

* Lots of fixes + mineral doors

* Mineral doors don't open with foam

code/__DEFINES/is_helpers.dm

@@ -50,6 +50,8 @@
 
 #define ismachinery(A) (istype(A, /obj/machinery))
 
+#define isairlock(A) (istype(A, /obj/machinery/door))
+
 #define isapc(A) (istype(A, /obj/machinery/power/apc))
 
 #define ismecha(A) (istype(A, /obj/mecha))

code/__DEFINES/status_effects.dm

@@ -126,6 +126,8 @@
 
 #define STATUS_EFFECT_REVERSED_HIGH_PRIESTESS /datum/status_effect/reversed_high_priestess //Bubblegum will chase the person hit by the effect, grabbing people at random. This can and WILL include the caster.
 
+#define STATUS_EFFECT_C_FOAMED /datum/status_effect/c_foamed
+
 //#define STATUS_EFFECT_NECROPOLIS_CURSE /datum/status_effect/necropolis_curse
 //#define CURSE_BLINDING	1 //makes the edges of the target's screen obscured
 //#define CURSE_SPAWNING	2 //spawns creatures that attack the target only

code/datums/station_state.dm

@@ -52,7 +52,7 @@
 				if(!GR.broken)
 					grille += 1
 
-			else if(istype(O, /obj/machinery/door))
+			else if(isairlock(O))
 				door += 1
 
 			else if(istype(O, /obj/machinery))

code/datums/status_effects/debuffs.dm

@@ -1353,6 +1353,52 @@
 	new /obj/effect/abstract/bubblegum_rend_helper(get_turf(src), null, 10)
 	qdel(src)
 
+/datum/status_effect/c_foamed
+	id = "c_foamed up"
+	duration = 1 MINUTES
+	status_type = STATUS_EFFECT_REFRESH
+	tick_interval = 10 SECONDS
+	var/foam_level = 1
+	var/mutable_appearance/foam_overlay
+
+/datum/status_effect/c_foamed/on_apply()
+	. = ..()
+	foam_overlay = mutable_appearance('icons/obj/foam_blobs.dmi', "foamed_1")
+	owner.add_overlay(foam_overlay)
+	owner.next_move_modifier *= 1.5
+	owner.Slowed(10 SECONDS, 1.5)
+
+/datum/status_effect/c_foamed/Destroy()
+	if(owner)
+		owner.cut_overlay(foam_overlay)
+		owner.next_move_modifier /= 1.5
+
+	QDEL_NULL(foam_overlay)
+	return ..()
+
+/datum/status_effect/c_foamed/tick()
+	. = ..()
+	if(--foam_level <= 0)
+		qdel(src)
+	refresh_overlay()
+
+/datum/status_effect/c_foamed/refresh()
+	. = ..()
+	// Our max slow is 50 seconds
+	foam_level = min(foam_level + 1, 5)
+
+	refresh_overlay()
+
+	if(foam_level == 5)
+		owner.Paralyse(4 SECONDS)
+
+/datum/status_effect/c_foamed/proc/refresh_overlay()
+	// Refresh overlay
+	owner.cut_overlay(foam_overlay)
+	QDEL_NULL(foam_overlay)
+	foam_overlay = mutable_appearance('icons/obj/foam_blobs.dmi', "foamed_[foam_level]")
+	owner.add_overlay(foam_overlay)
+
 /datum/status_effect/judo_armbar
 	id = "armbar"
 	duration = 5 SECONDS

code/datums/uplink_items/uplink_general.dm

@@ -668,6 +668,13 @@ GLOBAL_LIST_INIT(uplink_items, subtypesof(/datum/uplink_item))
 	item = /obj/item/organ_extractor
 	cost = 20
 
+/datum/uplink_item/device_tools/c_foam_launcher
+	name = "C-Foam Launcher"
+	desc = "A gun that shoots blobs of foam. Will block airlocks, and slow down humanoids. Not rated for xenomorph usage."
+	reference = "CFOAM"
+	item = /obj/item/gun/projectile/c_foam_launcher
+	cost = 25
+
 /datum/uplink_item/device_tools/tar_spray
 	name = "Sticky Tar Applicator"
 	desc = "A spray bottle containing an extremely viscous fluid that will leave behind tar whenever it is sprayed, greatly slowing down anyone who tries to walk over it. \

code/game/machinery/deployable.dm

@@ -422,7 +422,6 @@
 	item_state = "grenade"
 	materials = list(MAT_METAL = 500, MAT_GLASS = 300) //plasma burned up for power or something, plus not that much to reclaim
 
-
 /obj/item/storage/box/syndie_kit/dropwall
 	name = "dropwall generator box"
 
@@ -474,6 +473,33 @@
 	turret.owner_uid = owner_uid
 	qdel(src)
 
+/obj/structure/barricade/foam
+	name = "foam blockage"
+	desc = "This foam blocks the airlock from being opened."
+	icon = 'icons/obj/foam_blobs.dmi'
+	icon_state = "foamed_1"
+	layer = DOOR_HELPER_LAYER
+	// The integrity goes up with 25 per level, with an extra 25 when going from 4 to 5
+	obj_integrity = 25
+	max_integrity = 25
+	/// What level is the foam at?
+	var/foam_level = 1
+
+/obj/structure/barricade/foam/Destroy()
+	for(var/obj/machinery/door/airlock in loc.contents)
+		airlock.foam_level = 0
+	return ..()
+
+/obj/structure/barricade/foam/examine(mob/user)
+	. = ..()
+	. += "It would need [(5 - foam_level)] more blobs of foam to fully block the airlock."
+
+/obj/structure/barricade/foam/CanPass(atom/movable/mover, turf/target)
+	return istype(mover, /obj/item/projectile/c_foam) // Only c_foam blobs hit the airlock underneat/pass through the foam. The rest is hitting the barricade
+
+/obj/structure/barricade/foam/welder_act(mob/user, obj/item/I)
+	return FALSE
+
 #undef SINGLE
 #undef VERTICAL
 #undef HORIZONTAL

code/game/machinery/doors/door.dm

@@ -48,9 +48,13 @@
 	var/polarized_glass = FALSE
 	var/polarized_on
 
+	/// How many levels of foam do we have on us? Capped at 5
+	var/foam_level = 0
+
 	/// How much this door reduces superconductivity to when closed.
 	var/superconductivity = DOOR_HEAT_TRANSFER_COEFFICIENT
 
+
 /obj/machinery/door/Initialize(mapload)
 	. = ..()
 	set_init_door_layer()
@@ -93,7 +97,7 @@
 	return ..()
 
 /obj/machinery/door/Bumped(atom/AM)
-	if(operating || emagged)
+	if(operating || emagged || foam_level)
 		return
 	if(ismob(AM))
 		var/mob/B = AM
@@ -150,6 +154,9 @@
 		return
 	add_fingerprint(user)
 
+	if(foam_level)
+		return
+
 	if(density && !emagged)
 		if(allowed(user))
 			if(HAS_TRAIT(src, TRAIT_CMAGGED))
@@ -172,8 +179,12 @@
 	if(isterrorspider(user))
 		return
 
+	if(foam_level)
+		return
+
 	if(!HAS_TRAIT(user, TRAIT_FORCE_DOORS))
 		return FALSE
+
 	var/datum/antagonist/vampire/V = user.mind?.has_antag_datum(/datum/antagonist/vampire)
 	if(V && HAS_TRAIT_FROM(user, TRAIT_FORCE_DOORS, VAMPIRE_TRAIT))
 		if(!V.bloodusable)
@@ -209,7 +220,7 @@
 
 /obj/machinery/door/proc/try_to_activate_door(mob/user)
 	add_fingerprint(user)
-	if(operating || emagged)
+	if(operating || emagged || foam_level)
 		return
 	if(requiresID() && (allowed(user) || user.can_advanced_admin_interact()))
 		if(density)
@@ -574,3 +585,29 @@
 
 	for(var/obj/airlock_filler_object/filler as anything in fillers)
 		filler.set_opacity(opacity)
+
+#define MAX_FOAM_LEVEL 5
+// Adds foam to the airlock, which will block it from being opened
+/obj/machinery/door/proc/foam_up()
+	if(!foam_level)
+		new /obj/structure/barricade/foam(get_turf(src))
+		foam_level++
+		return
+
+	if(foam_level == MAX_FOAM_LEVEL)
+		return
+
+	for(var/obj/structure/barricade/foam/blockage in loc.contents)
+		blockage.foam_level = min(++blockage.foam_level, 5)
+		// The last level will increase the integrity by 50 instead of 25
+		if(foam_level == 4)
+			blockage.obj_integrity += 50
+			blockage.max_integrity += 50
+		else
+			blockage.obj_integrity += 25
+			blockage.max_integrity += 25
+		foam_level++
+		blockage.icon_state = "foamed_[foam_level]"
+		blockage.update_icon_state()
+
+#undef MAX_FOAM_LEVEL

code/game/mecha/equipment/tools/medical_tools.dm

@@ -527,7 +527,7 @@
 	if(!action_checks(target))
 		return
 	if(isobj(target))
-		if(!istype(target, /obj/machinery/door))//early return if we're not trying to open a door
+		if(!isairlock(target))//early return if we're not trying to open a door
 			return
 		var/obj/machinery/door/D = target	//the door we want to open
 		D.try_to_crowbar(chassis.occupant, src)//use the door's crowbar function

code/game/objects/items/weapons/c_foam_launcher.dm

@@ -0,0 +1,45 @@
+/*
+ * The C-Foam launcher from GTFO
+ * Shoots a blob of goo. If it hits an airlock, it will get closed shut, and you will have to either destroy the goo by force, or weld it off. The RnD foam is instant, and the traitor version has a `do_after`
+ * RnD printed needs canisters, while the traitor variant will slowly regenerate foam.
+ * The traitor variant also slows down mobs if they are hit by the foam.
+ * Overall, a good support tool designed to
+ */
+
+/obj/item/gun/projectile/c_foam_launcher
+	name = "\improper C-Foam launcher"
+	desc = "The C-Foam launcher. Shoots blobs of quickly hardening and growing foam. Can be used to slow down humanoids or block airlocks"
+	icon_state = "c_foam_launcher"
+	item_state = "c_foam_launcher"
+	w_class = WEIGHT_CLASS_NORMAL
+	origin_tech = "combat=4;syndicate=1;materials=3"
+	needs_permit = FALSE
+
+	fire_sound = 'sound/effects/bamf.ogg'
+	fire_sound_text = "thunk"
+	mag_type = /obj/item/ammo_box/magazine/c_foam
+
+/obj/item/gun/projectile/c_foam_launcher/update_icon_state()
+	icon_state = "c_foam_launcher[magazine ? "_loaded" : ""]"
+
+/obj/item/projectile/c_foam
+	name = "blob of foam"
+	icon_state = "foam_blob"
+	damage = 0
+
+/obj/item/projectile/c_foam/on_hit(atom/target, blocked, hit_zone)
+	. = ..()
+	if(isairlock(target))
+		var/obj/machinery/door/airlock = target
+		airlock.foam_up()
+		return
+
+	if(istype(target, /obj/structure/mineral_door))
+		var/obj/structure/mineral_door/door = target
+		door.foam_up()
+		return
+
+	if(iscarbon(target)) // For that funny xeno foam action
+		var/mob/living/carbon/sticky = target
+		sticky.foam_up()
+		return

code/game/objects/items/weapons/cards_ids.dm

@@ -54,7 +54,7 @@
 	origin_tech = "magnets=2"
 
 /obj/item/card/emag/magic_key/afterattack(atom/target, mob/user, proximity)
-	if(!istype(target, /obj/machinery/door))
+	if(!isairlock(target))
 		return
 	var/obj/machinery/door/D = target
 	D.locked = FALSE

code/game/objects/items/weapons/explosives.dm

@@ -90,7 +90,7 @@
 			log_game("[key_name(user)] planted [name] on [target.name] at ([target.x],[target.y],[target.z]) with [det_time] second fuse")
 
 		plastic_overlay.layer = HIGH_OBJ_LAYER
-		if(isturf(target) || istype(target, /obj/machinery/door))
+		if(isturf(target) || isairlock(target))
 			plastic_overlay_target = new /obj/effect/plastic(get_turf(user))
 		else
 			plastic_overlay_target = target

code/game/objects/items/weapons/paiwire.dm

@@ -1,5 +1,5 @@
 /obj/item/pai_cable/proc/plugin(obj/machinery/M as obj, mob/user as mob)
-	if(istype(M, /obj/machinery/door) || istype(M, /obj/machinery/camera))
+	if(isairlock(M) || istype(M, /obj/machinery/camera))
 		user.visible_message("[user] inserts [src] into a data port on [M].", "You insert [src] into a data port on [M].", "You hear the satisfying click of a wire jack fastening into place.")
 		user.drop_item()
 		src.loc = M

code/game/objects/structures/crates_lockers/closets.dm

@@ -446,7 +446,7 @@
 	if(T.density)
 		return
 	for(var/atom/A in T.contents)
-		if(A.density && istype(A, /obj/machinery/door))
+		if(A.density && isairlock(A))
 			return
 	UpdateTransparency(src, NewLoc)
 	forceMove(NewLoc)

code/game/objects/structures/mineral_doors.dm

@@ -22,6 +22,8 @@
 	var/open_sound = 'sound/effects/stonedoor_openclose.ogg'
 	var/close_sound = 'sound/effects/stonedoor_openclose.ogg'
 	var/damageSound = null
+	/// How much foam is on the door. Max 5 levels.
+	var/foam_level = 0
 
 /obj/structure/mineral_door/Initialize()
 	. = ..()
@@ -68,6 +70,8 @@
 /obj/structure/mineral_door/proc/try_to_operate(atom/user)
 	if(is_operating)
 		return
+	if(foam_level)
+		return
 	if(isliving(user))
 		var/mob/living/M = user
 		if(M.client)
@@ -216,3 +220,29 @@
 /obj/structure/mineral_door/wood/Initialize()
 	. = ..()
 	AddComponent(/datum/component/debris, DEBRIS_WOOD, -20, 10)
+
+#define MAX_FOAM_LEVEL 5
+// Adds foam to the airlock, which will block it from being opened
+/obj/structure/mineral_door/proc/foam_up()
+	if(!foam_level)
+		new /obj/structure/barricade/foam(get_turf(src))
+		foam_level++
+		return
+
+	if(foam_level == MAX_FOAM_LEVEL)
+		return
+
+	for(var/obj/structure/barricade/foam/blockage in loc.contents)
+		blockage.foam_level = min(++blockage.foam_level, 5)
+		// The last level will increase the integrity by 50 instead of 25
+		if(foam_level == 4)
+			blockage.obj_integrity += 50
+			blockage.max_integrity += 50
+		else
+			blockage.obj_integrity += 25
+			blockage.max_integrity += 25
+		foam_level++
+		blockage.icon_state = "foamed_[foam_level]"
+		blockage.update_icon_state()
+
+#undef MAX_FOAM_LEVEL

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

@@ -76,7 +76,7 @@
 	if(!has_buckled_mobs())
 		return
 	var/mob/living/buckled_mob = buckled_mobs[1]
-	if(istype(A, /obj/machinery/door))
+	if(isairlock(A))
 		A.Bumped(buckled_mob)
 
 	if(propelled)

code/modules/mob/living/carbon/carbon_defense.dm

@@ -76,3 +76,7 @@
 	if(!affecting) //bruh where's your chest
 		return FALSE
 	apply_damage(damage, BRUTE, affecting)
+
+// Adds the foam status effect to the carbon, which will slow it's movement speed and attack speed
+/mob/living/carbon/proc/foam_up(amount)
+	apply_status_effect(STATUS_EFFECT_C_FOAMED)

code/modules/projectiles/ammunition/ammo_casings.dm

@@ -508,3 +508,12 @@
 	muzzle_flash_range = MUZZLE_FLASH_RANGE_NORMAL
 	muzzle_flash_color = LIGHT_COLOR_DARKRED
 	icon_state = "lasercasing"
+
+/obj/item/ammo_casing/caseless/c_foam
+	name = "\improper C-Foam blob"
+	desc = "You shouldn't see this! Make an issue report on Github!"
+	caliber = "c_foam"
+	projectile_type = /obj/item/projectile/c_foam
+	muzzle_flash_strength = MUZZLE_FLASH_RANGE_WEAK
+	muzzle_flash_range = MUZZLE_FLASH_RANGE_WEAK
+	muzzle_flash_color = LIGHT_COLOR_DARKRED

code/modules/projectiles/ammunition/magazines.dm

@@ -624,3 +624,13 @@
 
 /obj/item/ammo_box/magazine/detective/speedcharger/attackby()
 	return
+
+/obj/item/ammo_box/magazine/c_foam
+	name = "\improper C-Foam canister"
+	desc = "A canister containing inert foam for the C-Foam launcher."
+	icon_state = "foam_canister"
+	ammo_type = /obj/item/ammo_casing/caseless/c_foam
+	max_ammo = 12
+
+/obj/item/ammo_box/magazine/c_foam/attack_self(mob/user)
+	return

code/modules/projectiles/projectile/magic_projectiles.dm

@@ -149,7 +149,7 @@
 	else if(isturf(T) && T.density)
 		if(!(istype(T, /turf/simulated/wall/indestructible)))
 			CreateDoor(T)
-	else if(istype(target, /obj/machinery/door))
+	else if(isairlock(target))
 		OpenDoor(target)
 	else if(istype(target, /obj/structure/closet))
 		OpenCloset(target)

code/modules/research/designs/autolathe_designs.dm

@@ -729,7 +729,6 @@
 	build_path = /obj/item/flamethrower/full
 	category = list("hacked", "Security")
 
-
 /datum/design/electropack
 	name = "Electropack"
 	id = "electropack"
@@ -842,6 +841,14 @@
 	build_path = /obj/item/ammo_box/c9mm
 	category = list("hacked", "Security")
 
+/datum/design/c_foam_ammo
+	name = "C-Foam cartridge"
+	id = "c_foam"
+	build_type = AUTOLATHE
+	materials = list(MAT_METAL = 5000, MAT_GLASS = 2000)
+	build_path = /obj/item/ammo_box/magazine/c_foam
+	category = list("hacked", "Security")
+
 /datum/design/cleaver
 	name = "Butcher's Cleaver"
 	id = "cleaver"

code/modules/vehicle/vehicle.dm

@@ -209,7 +209,7 @@
 		return FALSE
 	. = ..()
 	if(auto_door_open)
-		if(istype(M, /obj/machinery/door) && has_buckled_mobs())
+		if(isairlock(M) && has_buckled_mobs())
 			for(var/m in buckled_mobs)
 				M.Bumped(m)