Adding improvised anvil alt interaction to boulders.

code/modules/crafting/forging/forge_anvil.dm

@@ -1,14 +1,15 @@
 /obj/structure/anvil
-	name        = "anvil"
-	desc        = "A heavy block of material used as support for hammering things into shape."
-	icon        = 'icons/obj/structures/anvil.dmi'
-	icon_state  = ICON_STATE_WORLD
-	anchored    = TRUE
-	density     = TRUE
-	opacity     = FALSE
-	atom_flags  = ATOM_FLAG_CLIMBABLE
-	w_class     = ITEM_SIZE_STRUCTURE //_LARGE
-	material    = /decl/material/solid/metal/iron
+	name                = "anvil"
+	desc                = "A heavy block of material used as support for hammering things into shape."
+	icon                = 'icons/obj/structures/anvil.dmi'
+	icon_state          = ICON_STATE_WORLD
+	anchored            = TRUE
+	density             = TRUE
+	opacity             = FALSE
+	atom_flags          = ATOM_FLAG_CLIMBABLE
+	w_class             = ITEM_SIZE_STRUCTURE //_LARGE
+	material            = /decl/material/solid/metal/iron
+	max_health          = 1000
 	structure_flags     = STRUCTURE_FLAG_SURFACE
 	material_alteration = MAT_FLAG_ALTERATION_ALL
 
@@ -48,8 +49,18 @@
 
 	. = ..()
 
+// Chipped out of a boulder with a pick.
 /obj/structure/anvil/boulder
-	name_prefix = "crude"
-	icon        = 'icons/obj/structures/anvil_crude.dmi'
-	desc        = "A crude anvil chipped out of a chunk of stone. It probably won't last very long."
-	material    = /decl/material/solid/stone/granite
+	name_prefix         = "crude"
+	icon                = 'icons/obj/structures/anvil_crude.dmi'
+	desc                = "A crude anvil chipped out of a chunk of stone. It probably won't last very long."
+	material            = /decl/material/solid/stone/granite
+	max_health          = 500
+
+// Improvised with spaceman materials.
+/obj/structure/anvil/improvised
+	name_prefix         = "improvised"
+	icon                = 'icons/obj/structures/anvil_crude.dmi' // anvil_improvised.dmi'
+	desc                = "A anvil roughly improvised out of scrap metal. It probably won't last very long."
+	material            = /decl/material/solid/metal/steel
+	max_health          = 500

code/modules/crafting/forging/forge_billet.dm

@@ -1,8 +1,8 @@
 /obj/item/billet
-	name       = "billet"
-	desc       = "An unworked or partially-worked length of metal used to forge items and tools."
-	icon       = 'icons/obj/items/billet.dmi'
-	icon_state = ICON_STATE_WORLD
+	name                = "billet"
+	desc                = "An unworked or partially-worked length of metal used to forge items and tools."
+	icon                = 'icons/obj/items/billet.dmi'
+	icon_state          = ICON_STATE_WORLD
 	material_alteration = MAT_FLAG_ALTERATION_ALL
 	var/decl/forging_step/current_forging_step = /decl/forging_step/billet
 
@@ -90,6 +90,9 @@
 	var/obj/item/forged_thing = set_forging_step(next_step)
 	if(istype(forged_thing))
 		user.visible_message(SPAN_NOTICE("\The [user] has [next_action.work_verb] the billet into \a [forged_thing]."))
+	// Forging gradually degrades anvils.
+	if(!QDELETED(anvil))
+		anvil.take_damage(rand(10, 20), BRUTE)
 	return TRUE
 
 /obj/item/billet/examine(mob/user, distance, infix, suffix)
@@ -102,15 +105,12 @@
 /obj/item/billet/proc/standard_forging_checks(mob/user, obj/item/used_item, decl/forging_step/last_step, decl/forging_action/next_action, obj/structure/anvil/anvil)
 	// We cancelled or changed state, abort.
 	if(!next_action || current_forging_step != last_step || !(next_action in current_forging_step.steps))
-		world << "fail 1 ![next_action] || [current_forging_step] != [last_step] || !([next_action] in [current_forging_step.steps])"
 		return FALSE
 	// Something has been destroyed since we started forging.
 	if(QDELETED(src) || QDELETED(used_item) || QDELETED(anvil) || QDELETED(user))
-		world << "fail 2 qdel"
 		return FALSE
 	// Something else has changed, very unfortunate.
 	if(loc != anvil.loc || !CanPhysicallyInteract(user) || user.get_active_held_item() != used_item)
-		world << "fail 3 loc"
 		return FALSE
 	return hot_enough_to_forge()
 

code/modules/crafting/stack_recipes/recipes_steel.dm

@@ -116,3 +116,7 @@
 /decl/stack_recipe/steel/furniture/target_stake
 	result_type       = /obj/structure/target_stake
 	difficulty        = MAT_VALUE_NORMAL_DIY
+
+/decl/stack_recipe/steel/furniture
+	result_type       = /obj/structure/anvil/improvised
+	difficulty        = MAT_VALUE_HARD_DIY

code/modules/xenoarcheaology/boulder.dm

@@ -98,3 +98,27 @@
 		var/mob/living/silicon/robot/R = AM
 		if(IS_PICK(R.module_active))
 			attackby(R.module_active,R)
+
+/obj/structure/boulder/get_alt_interactions(mob/user)
+	. = ..()
+	LAZYADD(., /decl/interaction_handler/chip_anvil)
+
+/decl/interaction_handler/chip_anvil
+	name = "Chip Into Anvil"
+	expected_target_type = /obj/structure/boulder
+	var/work_skill = SKILL_CONSTRUCTION
+
+/decl/interaction_handler/chip_anvil/is_possible(atom/target, mob/user, obj/item/prop)
+	. = ..() && istype(prop) && IS_PICK(prop) && prop.material?.hardness >= target.get_material()?.hardness && user.skill_check(work_skill, SKILL_BASIC)
+
+/decl/interaction_handler/chip_anvil/invoked(atom/target, mob/user, obj/item/prop)
+	user.visible_message(SPAN_NOTICE("\The [user] begins chipping \the [target] into a rough anvil using \the [prop]."))
+	if(!user.do_skilled(10 SECONDS, work_skill, target))
+		return FALSE
+	if(QDELETED(user) || QDELETED(target) || QDELETED(prop) || user.get_active_held_item() != prop || !CanPhysicallyInteractWith(user, target))
+		return FALSE
+	if(!is_possible(target, user, prop))
+		return FALSE
+	user.visible_message(SPAN_NOTICE("\The [user] chips \the [target] into a rough anvil using \the [prop]."))
+	new /obj/structure/anvil/boulder(get_turf(target), target.get_material()?.type)
+	return TRUE