Adding metalwork.

code/__defines/skills.dm

@@ -5,6 +5,8 @@
 #define SKILL_PROF     5
 #define HAS_PERK       SKILL_NONE + 1
 
+#define SKILL_IMPOSSIBLE INFINITY
+
 #define SKILL_MIN      1 // Min skill value selectable
 #define SKILL_MAX      5 // Max skill value selectable
 #define SKILL_DEFAULT  4 //most mobs will default to this

code/game/atoms_movable.dm

@@ -479,6 +479,7 @@
 /atom/movable/proc/get_object_size()
 	return ITEM_SIZE_NORMAL
 
+// TODO: account for reagents and matter.
 /atom/movable/get_thermal_mass()
 	if(!simulated)
 		return 0
@@ -496,7 +497,18 @@
 	if(!held_slot || !istype(holder) || QDELETED(holder) || loc != holder)
 		return
 
-	// TODO: check protective gear
+	// TODO: put these flags on the inventory slot or something.
+	var/check_slots
+	if(held_slot in global.all_hand_slots)
+		check_slots = SLOT_HANDS
+	else if(held_slot == BP_MOUTH || held_slot == BP_HEAD)
+		check_slots = SLOT_FACE
+
+	if(check_slots)
+		for(var/obj/item/covering in holder.get_covering_equipped_items(check_slots))
+			if(covering.max_heat_protection_temperature >= temperature)
+				return
+
 	// TODO: less simplistic messages and logic
 	var/datum/inventory_slot/slot = held_slot && holder.get_inventory_slot_datum(held_slot)
 	var/check_organ = slot?.requires_organ_tag

code/game/objects/items/__item.dm

@@ -229,15 +229,16 @@
 	return FALSE
 
 /obj/item/examine(mob/user, distance)
-	var/desc_comp = "" //For "description composite"
-	desc_comp += "It is a [w_class_description()] item.<BR>"
+
+	var/list/desc_comp = list()
+	desc_comp += "It is a [w_class_description()] item."
 
 	var/desc_damage = get_examined_damage_string()
 	if(length(desc_damage))
-		desc_comp += "[desc_damage]<BR>"
+		desc_comp += "[desc_damage]"
 
 	if(paint_color)
-		desc_comp += "\The [src] has been <font color='[paint_color]'>[paint_verb]</font>.<BR>"
+		desc_comp += "\The [src] has been <font color='[paint_color]'>[paint_verb]</font>."
 
 	var/added_header = FALSE
 	if(user?.get_preference_value(/datum/client_preference/inquisitive_examine) == PREF_ON)
@@ -255,18 +256,17 @@
 
 			if(!added_header)
 				added_header = TRUE
-				desc_comp += "*--------*<BR>"
+				desc_comp += "*--------*"
 
 			for(var/decl/crafting_stage/initial_stage in available_recipes)
 				desc_comp += SPAN_NOTICE("With [available_recipes[initial_stage]], you could start making \a [initial_stage.descriptor] out of this.")
-				desc_comp += "<BR>"
-			desc_comp += "*--------*<BR>"
+			desc_comp += "*--------*"
 
 	if(distance <= 1 && has_extension(src, /datum/extension/loaded_cell))
 
 		if(!added_header)
 			added_header = TRUE
-			desc_comp += "*--------*<BR>"
+			desc_comp += "*--------*"
 
 		var/datum/extension/loaded_cell/cell_loaded = get_extension(src, /datum/extension/loaded_cell)
 		var/obj/item/cell/loaded_cell  = cell_loaded?.get_cell()
@@ -276,39 +276,37 @@
 		if(current_cell && current_cell != loaded_cell)
 			desc_comp += SPAN_NOTICE("\The [src] is using an external [current_cell.name] as a power supply.")
 		else
-			desc_comp += jointext(cell_loaded.get_examine_text(current_cell), "<BR>")
-		desc_comp += "<BR>*--------*<BR>"
+			desc_comp += cell_loaded.get_examine_text(current_cell)
+		desc_comp += "*--------*"
 
 	if(hasHUD(user, HUD_SCIENCE)) //Mob has a research scanner active.
 
 		if(!added_header)
 			added_header = TRUE
-			desc_comp += "*--------*<BR>"
+			desc_comp += "*--------*"
 
 		if(origin_tech)
 			desc_comp += SPAN_NOTICE("Testing potentials:")
-			desc_comp += "<BR>"
 			var/list/techlvls = cached_json_decode(origin_tech)
 			for(var/T in techlvls)
 				var/decl/research_field/field = SSfabrication.get_research_field_by_id(T)
-				desc_comp += "Tech: Level [techlvls[T]] [field.name].<BR>"
+				desc_comp += "Tech: Level [techlvls[T]] [field.name]."
 		else
-			desc_comp += "No tech origins detected.<BR>"
+			desc_comp += "No tech origins detected."
 
 		if(LAZYLEN(matter))
 			desc_comp += SPAN_NOTICE("Extractable materials:")
-			desc_comp += "<BR>"
 			for(var/mat in matter)
 				var/decl/material/M = GET_DECL(mat)
-				desc_comp += "[capitalize(M.solid_name)]<BR>"
+				desc_comp += "[capitalize(M.solid_name)]"
 		else
-			desc_comp += SPAN_DANGER("No extractable materials detected.<BR>")
-		desc_comp += "*--------*<BR>"
+			desc_comp += SPAN_DANGER("No extractable materials detected.")
+		desc_comp += "*--------*"
 
 	if(drying_wetness > 0 && drying_wetness != initial(drying_wetness))
-		desc_comp += "\The [src] is [get_dryness_text()].<BR>"
+		desc_comp += "\The [src] is [get_dryness_text()]."
 
-	return ..(user, distance, "", desc_comp)
+	return ..(user, distance, "", jointext(desc_comp, "<br/>"))
 
 /obj/item/check_mousedrop_adjacency(var/atom/over, var/mob/user)
 	. = (loc == user && istype(over, /obj/screen/inventory)) || ..()
@@ -392,14 +390,16 @@
 		matter = null
 		material = null
 		qdel(src)
+	return . || TRUE
 
 /obj/item/attack_self(mob/user)
 	if(user.a_intent == I_HURT && istype(material))
 		var/list/results = squash_item(skip_qdel = TRUE)
-		if(length(results) && user.try_unequip(src, user.loc))
+		if(results && user.try_unequip(src, user.loc))
 			user.visible_message(SPAN_DANGER("\The [user] squashes \the [src] into a lump."))
-			for(var/obj/item/thing in results)
-				user.put_in_hands(thing)
+			if(islist(results))
+				for(var/obj/item/thing in results)
+					user.put_in_hands(thing)
 			matter = null
 			material = null
 			qdel(src)

code/game/objects/objs.dm

@@ -375,3 +375,19 @@
 		if(composting_mat.compost_value)
 			return TRUE
 	return FALSE
+
+// Used to determine if something can be used as the basis of a mold.
+/obj/proc/get_mould_difficulty()
+	return SKILL_IMPOSSIBLE // length(matter) <= 1
+
+// Used to determine what a mold made from this item produces.
+/obj/proc/get_mould_product_type()
+	return type
+
+// Used to pass an associative list of data to the mold to pass to the product.
+/obj/proc/get_mould_metadata()
+	return
+
+// Called when passing the metadata back to the item.
+/obj/proc/take_mould_metadata(list/metadata)
+	return

code/game/objects/structures/fires.dm

@@ -185,7 +185,8 @@
 			user.put_in_hands(removing)
 			if(lit == FIRE_LIT)
 				visible_message(SPAN_DANGER("\The [user] fishes \the [removing] out of \the [src]!"))
-				user.fire_act(return_air(), last_fuel_burn_temperature, 500)
+				// Uncomment this when there's a way to take stuff out of a kiln or oven without setting yourself on fire.
+				//user.fire_act(return_air(), last_fuel_burn_temperature, 500)
 			else
 				visible_message(SPAN_NOTICE("\The [user] removes \the [removing] from \the [src]."))
 		update_icon()

code/modules/crafting/metalwork/metalwork_items.dm

@@ -0,0 +1,72 @@
+/obj/item/chems/crucible
+	name = "crucible"
+	desc = "A heavy, thick-walled vessel used for melting down ore."
+	icon = 'icons/obj/metalworking/crucible.dmi'
+	icon_state = ICON_STATE_WORLD
+	material = /decl/material/solid/stone/pottery
+	atom_flags = ATOM_FLAG_OPEN_CONTAINER
+	w_class = ITEM_SIZE_NO_CONTAINER
+	material_alteration = MAT_FLAG_ALTERATION_COLOR | MAT_FLAG_ALTERATION_NAME
+// TODO: storage datum when storage PR is merged.
+//	max_w_class = ITEM_SIZE_LARGE
+//	max_storage_space = BASE_STORAGE_CAPACITY(ITEM_SIZE_LARGE)
+	var/max_held = 10
+
+/obj/item/chems/crucible/attackby(obj/item/W, mob/user)
+
+	if(istype(W, /obj/item/chems/mould))
+		if(W.material?.hardness <= MAT_VALUE_MALLEABLE)
+			to_chat(user, SPAN_WARNING("\The [W] is currently too soft to be used as a mould."))
+			return TRUE
+		if(standard_pour_into(user, W))
+			return TRUE
+
+	if(istype(W, /obj/item/debris) || istype(W, /obj/item/stack/material))
+
+		if(length(contents) >= max_held)
+			to_chat(user, SPAN_WARNING("\The [src] is full."))
+			return TRUE
+
+		var/obj/item/transferring
+		if(istype(W, /obj/item/stack))
+			var/obj/item/stack/input = W
+			if(input.get_amount() <= 5 && user.try_unequip(input))
+				transferring = input
+			else
+				transferring = input.split(5)
+		else if(user.try_unequip(W))
+			transferring = W
+
+		if(transferring)
+			transferring.forceMove(src)
+			visible_message(SPAN_NOTICE("\The [user] drops \the [transferring] into \the [src]."))
+			return TRUE
+
+	return ..()
+
+/obj/item/chems/crucible/attack_hand(mob/user)
+	if(length(contents))
+		var/obj/item/stack = pick(contents)
+		stack.dropInto(get_turf(src))
+		user.put_in_hands(stack)
+		return TRUE
+	return ..()
+// End placeholder interaction. Remove when storage PR is in.
+
+/obj/item/chems/crucible/on_reagent_change()
+	. = ..()
+	queue_icon_update()
+
+/obj/item/chems/crucible/on_update_icon()
+	. = ..()
+	var/decl/material/primary_reagent = reagents?.get_primary_reagent_decl()
+	if(primary_reagent)
+		var/image/I = image(icon, "[icon_state]-filled")
+		I.color = primary_reagent.color
+		I.alpha = 255 * primary_reagent.opacity
+		I.appearance_flags |= RESET_COLOR
+		add_overlay(I)
+
+/obj/item/chems/crucible/initialize_reagents()
+	create_reagents(15 * REAGENT_UNITS_PER_MATERIAL_SHEET)
+	return ..()