Ports smart metal foam from FTL (#29963)

* Ports smart foam from FTL

* Adds foam grenades to the EngiVend

* Why are you doing htis?

* Stuff

* badoop

code/game/objects/effects/effect_system/effects_foam.dm

@@ -32,6 +32,9 @@
 /obj/effect/particle_effect/foam/metal/MakeSlippery()
 	return
 
+/obj/effect/particle_effect/foam/metal/smart
+	name = "smart foam"
+
 /obj/effect/particle_effect/foam/metal/iron
 	name = "iron foam"
 	metal = IRON_FOAM
@@ -68,6 +71,20 @@
 	flick("[icon_state]-disolve", src)
 	QDEL_IN(src, 5)
 
+/obj/effect/particle_effect/foam/smart/kill_foam() //Smart foam adheres to area borders for walls
+	STOP_PROCESSING(SSfastprocess, src)
+	if(metal)
+		var/turf/T = get_turf(src)
+		if(isspaceturf(T)) //Block up any exposed space
+			T.ChangeTurf(/turf/open/floor/plating/foam)
+		for(var/direction in GLOB.cardinals)
+			var/turf/cardinal_turf = get_step(T, direction)
+			if(get_area(cardinal_turf) != get_area(T)) //We're at an area boundary, so let's block off this turf!
+				new/obj/structure/foamedmetal(T)
+				break
+	flick("[icon_state]-disolve", src)
+	QDEL_IN(src, 5)
+
 /obj/effect/particle_effect/foam/process()
 	lifetime--
 	if(lifetime < 1)
@@ -149,6 +166,10 @@
 	effect_type = /obj/effect/particle_effect/foam/metal
 
 
+/datum/effect_system/foam_spread/metal/smart
+	effect_type = /obj/effect/particle_effect/foam/smart
+
+
 /datum/effect_system/foam_spread/New()
 	..()
 	chemholder = new /obj()

code/game/objects/items/grenades/chem_grenade.dm

@@ -326,6 +326,24 @@
 	beakers += B2
 
 
+/obj/item/grenade/chem_grenade/smart_metal_foam
+	name = "smart metal foam grenade"
+	desc = "Used for sealing and reconstruction of air breaches."
+	stage = READY
+
+/obj/item/grenade/chem_grenade/smart_metal_foam/Initialize()
+	. = ..()
+	var/obj/item/reagent_containers/glass/beaker/large/B1 = new(src)
+	var/obj/item/reagent_containers/glass/beaker/B2 = new(src)
+
+	B1.reagents.add_reagent("aluminium", 75)
+	B2.reagents.add_reagent("smart_foaming_agent", 25)
+	B2.reagents.add_reagent("facid", 25)
+
+	beakers += B1
+	beakers += B2
+
+
 /obj/item/grenade/chem_grenade/incendiary
 	name = "incendiary grenade"
 	desc = "Used for clearing rooms of living things."

code/game/objects/items/storage/boxes.dm

@@ -583,6 +583,15 @@
 	for(var/i in 1 to 7)
 		new /obj/item/grenade/chem_grenade/metalfoam(src)
 
+/obj/item/storage/box/smart_metal_foam
+	name = "box of smart metal foam grenades"
+	desc = "Used to rapidly seal hull breaches. This variety conforms to the walls of its area."
+	illustration = "flashbang"
+
+/obj/item/storage/box/smart_metal_foam/PopulateContents()
+	for(var/i in 1 to 7)
+		new/obj/item/grenade/chem_grenade/smart_metal_foam(src)
+
 /obj/item/storage/box/hug
 	name = "box of hugs"
 	desc = "A special box for sensitive people."