Techwebs Backend Refactor - Removes references from techwebs and uses IDs instead (#40596)

Yeah yeah I know no opening too many WIP PRs but this one's [ready] and I want to make sure any furthur techweb development doesn't keep using the old reference system which will make refactoring it harder, and this makes it easier for coders to do stuff in theory (at least for me), standardizes getting a node/design, and makes stuff actually GC properly.

code/modules/research/techweb/__techweb_helpers.dm

@@ -1,48 +1,3 @@
-
-/proc/initialize_all_techweb_nodes(clearall = FALSE)
-	if(islist(SSresearch.techweb_nodes) && clearall)
-		QDEL_LIST(SSresearch.techweb_nodes)
-	if(islist(SSresearch.techweb_nodes_starting && clearall))
-		QDEL_LIST(SSresearch.techweb_nodes_starting)
-	var/list/returned = list()
-	for(var/path in subtypesof(/datum/techweb_node))
-		var/datum/techweb_node/TN = path
-		if(isnull(initial(TN.id)))
-			continue
-		TN = new path
-		if(returned[initial(TN.id)])
-			stack_trace("WARNING: Techweb node ID clash with ID [initial(TN.id)] detected!")
-			SSresearch.errored_datums[TN] = initial(TN.id)
-			continue
-		returned[initial(TN.id)] = TN
-		if(TN.starting_node)
-			SSresearch.techweb_nodes_starting[TN.id] = TN
-	SSresearch.techweb_nodes = returned
-	verify_techweb_nodes()				//Verify all nodes have ids and such.
-	calculate_techweb_nodes()
-	calculate_techweb_boost_list()
-	verify_techweb_nodes()		//Verify nodes and designs have been crosslinked properly.
-
-/proc/initialize_all_techweb_designs(clearall = FALSE)
-	if(islist(SSresearch.techweb_designs) && clearall)
-		QDEL_LIST(SSresearch.techweb_designs)
-	var/list/returned = list()
-	for(var/path in subtypesof(/datum/design))
-		var/datum/design/DN = path
-		if(isnull(initial(DN.id)))
-			stack_trace("WARNING: Design with null ID detected. Build path: [initial(DN.build_path)]")
-			continue
-		else if(initial(DN.id) == DESIGN_ID_IGNORE)
-			continue
-		DN = new path
-		if(returned[initial(DN.id)])
-			stack_trace("WARNING: Design ID clash with ID [initial(DN.id)] detected!")
-			SSresearch.errored_datums[DN] = initial(DN.id)
-			continue
-		returned[initial(DN.id)] = DN
-	SSresearch.techweb_designs = returned
-	verify_techweb_designs()
-
 /proc/count_unique_techweb_nodes()
 	var/static/list/L = typesof(/datum/techweb_node)
 	return L.len
@@ -51,135 +6,10 @@
 	var/static/list/L = typesof(/datum/design)
 	return L.len
 
-/proc/get_techweb_node_by_id(id)
-	if(SSresearch.techweb_nodes[id])
-		return SSresearch.techweb_nodes[id]
-
-/proc/get_techweb_design_by_id(id)
-	if(SSresearch.techweb_designs[id])
-		return SSresearch.techweb_designs[id]
-
-/proc/research_node_id_error(id)
-	if(SSresearch.invalid_node_ids[id])
-		SSresearch.invalid_node_ids[id]++
-	else
-		SSresearch.invalid_node_ids[id] = 1
-
-/proc/design_id_error(id)
-	if(SSresearch.invalid_design_ids[id])
-		SSresearch.invalid_design_ids[id]++
-	else
-		SSresearch.invalid_design_ids[id] = 1
-
 /proc/node_boost_error(id, message)
 	WARNING("Invalid boost information for node \[[id]\]: [message]")
 	SSresearch.invalid_node_boost[id] = message
 
-/proc/verify_techweb_nodes()
-	for(var/n in SSresearch.techweb_nodes)
-		var/datum/techweb_node/N = SSresearch.techweb_nodes[n]
-		if(!istype(N))
-			WARNING("Invalid research node with ID [n] detected and removed.")
-			SSresearch.techweb_nodes -= n
-			research_node_id_error(n)
-		for(var/p in N.prereq_ids)
-			var/datum/techweb_node/P = SSresearch.techweb_nodes[p]
-			if(!istype(P))
-				WARNING("Invalid research prerequisite node with ID [p] detected in node [N.display_name]\[[N.id]\] removed.")
-				N.prereq_ids  -= p
-				research_node_id_error(p)
-		for(var/d in N.design_ids)
-			var/datum/design/D = SSresearch.techweb_designs[d]
-			if(!istype(D))
-				WARNING("Invalid research design with ID [d] detected in node [N.display_name]\[[N.id]\] removed.")
-				N.designs -= d
-				design_id_error(d)
-		for(var/p in N.prerequisites)
-			var/datum/techweb_node/P = N.prerequisites[p]
-			if(!istype(P))
-				WARNING("Invalid research prerequisite node with ID [p] detected in node [N.display_name]\[[N.id]\] removed.")
-				N.prerequisites -= p
-				research_node_id_error(p)
-		for(var/u in N.unlocks)
-			var/datum/techweb_node/U = N.unlocks[u]
-			if(!istype(U))
-				WARNING("Invalid research unlock node with ID [u] detected in node [N.display_name]\[[N.id]\] removed.")
-				N.unlocks -= u
-				research_node_id_error(u)
-		for(var/d in N.designs)
-			var/datum/design/D = N.designs[d]
-			if(!istype(D))
-				WARNING("Invalid research design with ID [d] detected in node [N.display_name]\[[N.id]\] removed.")
-				N.designs -= d
-				design_id_error(d)
-		for(var/p in N.boost_item_paths)
-			if(!ispath(p))
-				N.boost_item_paths -= p
-				node_boost_error(N.id, "[p] is not a valid path.")
-			var/list/points = N.boost_item_paths[p]
-			if(islist(points))
-				for(var/i in points)
-					if(!isnum(points[i]))
-						node_boost_error(N.id, "[points[i]] is not a valid number.")
-					else if(!SSresearch.point_types[i])
-						node_boost_error(N.id, "[i] is not a valid point type.")
-			else if(!isnull(points))
-				N.boost_item_paths -= p
-				node_boost_error(N.id, "No valid list.")
-		CHECK_TICK
-
-/proc/verify_techweb_designs()
-	for(var/d in SSresearch.techweb_designs)
-		var/datum/design/D = SSresearch.techweb_designs[d]
-		if(!istype(D))
-			stack_trace("WARNING: Invalid research design with ID [d] detected and removed.")
-			SSresearch.techweb_designs -= d
-		CHECK_TICK
-
-/proc/calculate_techweb_nodes()
-	for(var/design_id in SSresearch.techweb_designs)
-		var/datum/design/D = SSresearch.techweb_designs[design_id]
-		D.unlocked_by.Cut()
-	for(var/node_id in SSresearch.techweb_nodes)
-		var/datum/techweb_node/node = SSresearch.techweb_nodes[node_id]
-		node.prerequisites = list()
-		node.unlocks = list()
-		node.designs = list()
-		for(var/i in node.prereq_ids)
-			node.prerequisites[i] = SSresearch.techweb_nodes[i]
-		for(var/i in node.design_ids)
-			var/datum/design/D = SSresearch.techweb_designs[i]
-			node.designs[i] = D
-			D.unlocked_by += node
-		if(node.hidden)
-			SSresearch.techweb_nodes_hidden[node.id] = node
-		CHECK_TICK
-	generate_techweb_unlock_linking()
-
-/proc/generate_techweb_unlock_linking()
-	for(var/node_id in SSresearch.techweb_nodes)						//Clear all unlock links to avoid duplication.
-		var/datum/techweb_node/node = SSresearch.techweb_nodes[node_id]
-		node.unlocks = list()
-	for(var/node_id in SSresearch.techweb_nodes)
-		var/datum/techweb_node/node = SSresearch.techweb_nodes[node_id]
-		for(var/prereq_id in node.prerequisites)
-			var/datum/techweb_node/prereq_node = node.prerequisites[prereq_id]
-			prereq_node.unlocks[node.id] = node
-
-/proc/calculate_techweb_boost_list(clearall = FALSE)
-	if(clearall)
-		SSresearch.techweb_boost_items = list()
-	for(var/node_id in SSresearch.techweb_nodes)
-		var/datum/techweb_node/node = SSresearch.techweb_nodes[node_id]
-		for(var/path in node.boost_item_paths)
-			if(!ispath(path))
-				continue
-			if(length(SSresearch.techweb_boost_items[path]))
-				SSresearch.techweb_boost_items[path][node.id] = node.boost_item_paths[path]
-			else
-				SSresearch.techweb_boost_items[path] = list(node.id = node.boost_item_paths[path])
-		CHECK_TICK
-
 /proc/techweb_item_boost_check(obj/item/I)			//Returns an associative list of techweb node datums with values of the boost it gives.	var/list/returned = list()
 	if(SSresearch.techweb_boost_items[I.type])
 		return SSresearch.techweb_boost_items[I.type]		//It should already be formatted in node datum = list(point type = value)

code/modules/research/techweb/_techweb.dm

@@ -5,12 +5,13 @@
 
 //Techweb datums are meant to store unlocked research, being able to be stored on research consoles, servers, and disks. They are NOT global.
 /datum/techweb
-	var/list/datum/techweb_node/researched_nodes = list()		//Already unlocked and all designs are now available. Assoc list, id = datum
-	var/list/datum/techweb_node/visible_nodes = list()			//Visible nodes, doesn't mean it can be researched. Assoc list, id = datum
-	var/list/datum/techweb_node/available_nodes = list()		//Nodes that can immediately be researched, all reqs met. assoc list, id = datum
-	var/list/datum/design/researched_designs = list()			//Designs that are available for use. Assoc list, id = datum
-	var/list/datum/techweb_node/boosted_nodes = list()			//Already boosted nodes that can't be boosted again. node datum = path of boost object.
-	var/list/datum/techweb_node/hidden_nodes = list()			//Hidden nodes. id = datum. Used for unhiding nodes when requirements are met by removing the entry of the node.
+	var/list/researched_nodes = list()		//Already unlocked and all designs are now available. Assoc list, id = TRUE
+	var/list/visible_nodes = list()			//Visible nodes, doesn't mean it can be researched. Assoc list, id = TRUE
+	var/list/available_nodes = list()		//Nodes that can immediately be researched, all reqs met. assoc list, id = TRUE
+	var/list/researched_designs = list()	//Designs that are available for use. Assoc list, id = TRUE
+	var/list/custom_designs = list()		//Custom inserted designs like from disks that should survive recalculation.
+	var/list/boosted_nodes = list()			//Already boosted nodes that can't be boosted again. node id = path of boost object.
+	var/list/hidden_nodes = list()			//Hidden nodes. id = TRUE. Used for unhiding nodes when requirements are met by removing the entry of the node.
 	var/list/deconstructed_items = list()						//items already deconstructed for a generic point boost. path = list(point_type = points)
 	var/list/research_points = list()										//Available research points. type = number
 	var/list/obj/machinery/computer/rdconsole/consoles_accessing = list()
@@ -19,13 +20,14 @@
 	var/largest_bomb_value = 0
 	var/organization = "Third-Party"							//Organization name, used for display.
 	var/list/last_bitcoins = list()								//Current per-second production, used for display only.
-	var/list/tiers = list()										//Assoc list, datum = number, 1 is available, 2 is all reqs are 1, so on
+	var/list/tiers = list()										//Assoc list, id = number, 1 is available, 2 is all reqs are 1, so on
 
 /datum/techweb/New()
+	SSresearch.techwebs += src
 	for(var/i in SSresearch.techweb_nodes_starting)
-		var/datum/techweb_node/DN = SSresearch.techweb_nodes_starting[i]
+		var/datum/techweb_node/DN = SSresearch.techweb_node_by_id(i)
 		research_node(DN, TRUE, FALSE)
-	hidden_nodes = SSresearch.techweb_nodes_hidden
+	hidden_nodes = SSresearch.techweb_nodes_hidden.Copy()
 	return ..()
 
 /datum/techweb/admin
@@ -50,23 +52,24 @@
 	researched_designs = null
 	available_nodes = null
 	visible_nodes = null
+	custom_designs = null
+	SSresearch.techwebs -= src
 	return ..()
 
-/datum/techweb/proc/recalculate_nodes(recalculate_designs = FALSE)
+/datum/techweb/proc/recalculate_nodes(recalculate_designs = FALSE, wipe_custom_designs = FALSE)
 	var/list/datum/techweb_node/processing = list()
-	for(var/i in researched_nodes)
-		processing[i] = researched_nodes[i]
-	for(var/i in visible_nodes)
-		processing[i] = visible_nodes[i]
-	for(var/i in available_nodes)
-		processing[i] = available_nodes[i]
-	for(var/i in processing)
-		update_node_status(processing[i])
-	if(recalculate_designs)					//Wipes custom added designs like from design disks or anything like that!
-		researched_designs = list()
-	for(var/i in processing)
-		var/datum/techweb_node/TN = processing[i]
-		update_node_status(TN, FALSE)
+	for(var/id in researched_nodes)
+		processing[id] = TRUE
+	for(var/id in visible_nodes)
+		processing[id] = TRUE
+	for(var/id in available_nodes)
+		processing[id] = TRUE
+	if(recalculate_designs)
+		researched_designs = custom_designs.Copy()
+		if(wipe_custom_designs)
+			custom_designs = list()
+	for(var/id in processing)
+		update_node_status(SSresearch.techweb_node_by_id(id), FALSE)
 		CHECK_TICK
 	for(var/v in consoles_accessing)
 		var/obj/machinery/computer/rdconsole/V = v
@@ -156,21 +159,26 @@
 	research_points[type] = max(0, research_points[type] - amount)
 	return TRUE
 
-/datum/techweb/proc/add_design_by_id(id)
-	return add_design(get_techweb_design_by_id(id))
+/datum/techweb/proc/add_design_by_id(id, custom = FALSE)
+	return add_design(SSresearch.techweb_design_by_id(id), custom)
 
-/datum/techweb/proc/add_design(datum/design/design)
+/datum/techweb/proc/add_design(datum/design/design, custom = FALSE)
 	if(!istype(design))
 		return FALSE
-	researched_designs[design.id] = design
+	researched_designs[design.id] = TRUE
+	if(custom)
+		custom_designs[design.id] = TRUE
 	return TRUE
 
-/datum/techweb/proc/remove_design_by_id(id)
-	return remove_design(get_techweb_design_by_id(id))
+/datum/techweb/proc/remove_design_by_id(id, custom = FALSE)
+	return remove_design(SSresearch.techweb_design_by_id(id), custom)
 
-/datum/techweb/proc/remove_design(datum/design/design)
+/datum/techweb/proc/remove_design(datum/design/design, custom = FALSE)
 	if(!istype(design))
 		return FALSE
+	if(custom_designs[design.id] && !custom)
+		return FALSE
+	custom_designs -= design.id
 	researched_designs -= design.id
 	return TRUE
 
@@ -188,7 +196,7 @@
 	return techweb_point_display_generic(research_points)
 
 /datum/techweb/proc/research_node_id(id, force, auto_update_points)
-	return research_node(get_techweb_node_by_id(id), force, auto_update_points)
+	return research_node(SSresearch.techweb_node_by_id(id), force, auto_update_points)
 
 /datum/techweb/proc/research_node(datum/techweb_node/node, force = FALSE, auto_adjust_cost = TRUE)
 	if(!istype(node))
@@ -199,12 +207,12 @@
 			return FALSE
 	if(auto_adjust_cost)
 		remove_point_list(node.get_price(src))
-	researched_nodes[node.id] = node				//Add to our researched list
-	for(var/i in node.unlocks)
-		visible_nodes[i] = node.unlocks[i]
-		update_node_status(node.unlocks[i])
-	for(var/i in node.designs)
-		add_design(node.designs[i])
+	researched_nodes[node.id] = TRUE				//Add to our researched list
+	for(var/id in node.unlock_ids)
+		visible_nodes[id] = TRUE
+		update_node_status(SSresearch.techweb_node_by_id(id))
+	for(var/id in node.design_ids)
+		add_design_by_id(id)
 	update_node_status(node)
 	if(!istype(src, /datum/techweb/admin))
 		var/datum/bank_account/D = SSeconomy.get_dep_account(ACCOUNT_SCI)
@@ -213,7 +221,7 @@
 	return TRUE
 
 /datum/techweb/proc/unresearch_node_id(id)
-	return unresearch_node(get_techweb_node_by_id(id))
+	return unresearch_node(SSresearch.techweb_node_by_id(id))
 
 /datum/techweb/proc/unresearch_node(datum/techweb_node/node)
 	if(!istype(node))
@@ -224,9 +232,9 @@
 /datum/techweb/proc/boost_with_path(datum/techweb_node/N, itempath)
 	if(!istype(N) || !ispath(itempath))
 		return FALSE
-	LAZYINITLIST(boosted_nodes[N])
+	LAZYINITLIST(boosted_nodes[N.id])
 	for(var/i in N.boost_item_paths[itempath])
-		boosted_nodes[N][i] = max(boosted_nodes[N][i], N.boost_item_paths[itempath][i])
+		boosted_nodes[N.id][i] = max(boosted_nodes[N.id][i], N.boost_item_paths[itempath][i])
 	if(N.autounlock_by_boost)
 		hidden_nodes -= N.id
 	update_node_status(N)
@@ -241,13 +249,13 @@
 			var/tier = 0
 			if (!researched_nodes[node.id])  // researched is tier 0
 				for (var/id in node.prereq_ids)
-					var/prereq_tier = tiers[node.prerequisites[id]]
+					var/prereq_tier = tiers[id]
 					tier = max(tier, prereq_tier + 1)
 
-			if (tier != tiers[node])
-				tiers[node] = tier
-				for (var/id in node.unlocks)
-					next += node.unlocks[id]
+			if (tier != tiers[node.id])
+				tiers[node.id] = tier
+				for (var/id in node.unlock_ids)
+					next += SSresearch.techweb_node_by_id(id)
 		current = next
 
 /datum/techweb/proc/update_node_status(datum/techweb_node/node, autoupdate_consoles = TRUE)
@@ -257,8 +265,8 @@
 	if(researched_nodes[node.id])
 		researched = TRUE
 	var/needed = node.prereq_ids.len
-	for(var/i in node.prereq_ids)
-		if(researched_nodes[i])
+	for(var/id in node.prereq_ids)
+		if(researched_nodes[id])
 			visible = TRUE
 			needed--
 	if(!needed)
@@ -269,15 +277,15 @@
 	if(hidden_nodes[node.id])	//Hidden.
 		return
 	if(researched)
-		researched_nodes[node.id] = node
-		for(var/i in node.designs)
-			add_design(node.designs[i])
+		researched_nodes[node.id] = TRUE
+		for(var/id in node.design_ids)
+			add_design(SSresearch.techweb_design_by_id(id))
 	else
 		if(available)
-			available_nodes[node.id] = node
+			available_nodes[node.id] = TRUE
 		else
 			if(visible)
-				visible_nodes[node.id] = node
+				visible_nodes[node.id] = TRUE
 	update_tiers(node)
 	if(autoupdate_consoles)
 		for(var/v in consoles_accessing)
@@ -288,35 +296,34 @@
 //Laggy procs to do specific checks, just in case. Don't use them if you can just use the vars that already store all this!
 /datum/techweb/proc/designHasReqs(datum/design/D)
 	for(var/i in researched_nodes)
-		var/datum/techweb_node/N = researched_nodes[i]
-		for(var/I in N.designs)
-			if(D == N.designs[I])
-				return TRUE
+		var/datum/techweb_node/N = SSresearch.techweb_node_by_id(i)
+		if(N.design_ids[D.id])
+			return TRUE
 	return FALSE
 
 /datum/techweb/proc/isDesignResearched(datum/design/D)
 	return isDesignResearchedID(D.id)
 
 /datum/techweb/proc/isDesignResearchedID(id)
-	return researched_designs[id]
+	return researched_designs[id]? SSresearch.techweb_design_by_id(id) : FALSE
 
 /datum/techweb/proc/isNodeResearched(datum/techweb_node/N)
 	return isNodeResearchedID(N.id)
 
 /datum/techweb/proc/isNodeResearchedID(id)
-	return researched_nodes[id]
+	return researched_nodes[id]? SSresearch.techweb_node_by_id(id) : FALSE
 
 /datum/techweb/proc/isNodeVisible(datum/techweb_node/N)
 	return isNodeResearchedID(N.id)
 
 /datum/techweb/proc/isNodeVisibleID(id)
-	return visible_nodes[id]
+	return visible_nodes[id]? SSresearch.techweb_node_by_id(id) : FALSE
 
 /datum/techweb/proc/isNodeAvailable(datum/techweb_node/N)
 	return isNodeAvailableID(N.id)
 
 /datum/techweb/proc/isNodeAvailableID(id)
-	return available_nodes[id]
+	return available_nodes[id]? SSresearch.techweb_node_by_id(id) : FALSE
 
 /datum/techweb/specialized
 	var/allowed_buildtypes = ALL
@@ -339,11 +346,11 @@
 	for(var/id in node_autounlock_ids)
 		research_node_id(id, TRUE, FALSE)
 	for(var/id in SSresearch.techweb_designs)
-		var/datum/design/D = SSresearch.techweb_designs[id]
+		var/datum/design/D = SSresearch.techweb_design_by_id(id)
 		if(D.build_type & design_autounlock_buildtypes)
 			for(var/i in D.category)
 				if(i in design_autounlock_categories)
-					add_design(D)
+					add_design_by_id(D.id)
 					break
 
 /datum/techweb/specialized/autounlocking/autolathe

code/modules/research/techweb/_techweb_node.dm

@@ -1,5 +1,6 @@
 
 //Techweb nodes are GLOBAL, there should only be one instance of them in the game. Persistant changes should never be made to them in-game.
+//USE SSRESEARCH PROCS TO OBTAIN REFERENCES. DO NOT REFERENCE OUTSIDE OF SSRESEARCH OR YOU WILL FUCK UP GC.
 
 /datum/techweb_node
 	var/id
@@ -9,20 +10,82 @@
 	var/starting_node = FALSE	//Whether it's available without any research.
 	var/list/prereq_ids = list()
 	var/list/design_ids = list()
-	var/list/datum/techweb_node/prerequisites = list()		//Assoc list id = datum
-	var/list/datum/techweb_node/unlocks = list()			//CALCULATED FROM OTHER NODE'S PREREQUISITES. Assoc list id = datum.
-	var/list/datum/design/designs = list()					//Assoc list id = datum
+	var/list/unlock_ids = list()			//CALCULATED FROM OTHER NODE'S PREREQUISITES. Assoc list id = TRUE.
 	var/list/boost_item_paths = list()		//Associative list, path = list(point type = point_value).
 	var/autounlock_by_boost = TRUE			//boosting this will autounlock this node.
 	var/export_price = 0					//Cargo export price.
-	var/list/research_costs = 0					//Point cost to research. type = amount
+	var/list/research_costs = list()					//Point cost to research. type = amount
 	var/category = "Misc"				//Category
 
+/datum/techweb_node/error_node
+	id = "ERROR"
+	display_name = "ERROR"
+	description = "This usually means something in the database has corrupted. If it doesn't go away automatically, inform Central Command for their techs to fix it ASAP(tm)"
+
+/datum/techweb_node/proc/Initialize()
+	//Make lists associative for lookup
+	for(var/id in prereq_ids)
+		prereq_ids[id] = TRUE
+	for(var/id in design_ids)
+		design_ids[id] = TRUE
+	for(var/id in unlock_ids)
+		unlock_ids[id] = TRUE
+
+/datum/techweb_node/Destroy()
+	SSresearch.techweb_nodes -= id
+	return ..()
+
+/datum/techweb_node/serialize_list(list/options)
+	. = list()
+	VARSET_TO_LIST(., id)
+	VARSET_TO_LIST(., display_name)
+	VARSET_TO_LIST(., hidden)
+	VARSET_TO_LIST(., starting_node)
+	VARSET_TO_LIST(., assoc_list_strip_value(prereq_ids))
+	VARSET_TO_LIST(., assoc_list_strip_value(design_ids))
+	VARSET_TO_LIST(., assoc_list_strip_value(unlock_ids))
+	VARSET_TO_LIST(., boost_item_paths)
+	VARSET_TO_LIST(., autounlock_by_boost)
+	VARSET_TO_LIST(., export_price)
+	VARSET_TO_LIST(., research_costs)
+	VARSET_TO_LIST(., category)
+
+/datum/techweb_node/deserialize_list(list/input, list/options)
+	if(!input["id"])
+		return
+	VARSET_FROM_LIST(input, id)
+	VARSET_FROM_LIST(input, display_name)
+	VARSET_FROM_LIST(input, hidden)
+	VARSET_FROM_LIST(input, starting_node)
+	VARSET_FROM_LIST(input, prereq_ids)
+	VARSET_FROM_LIST(input, design_ids)
+	VARSET_FROM_LIST(input, unlock_ids)
+	VARSET_FROM_LIST(input, boost_item_paths)
+	VARSET_FROM_LIST(input, autounlock_by_boost)
+	VARSET_FROM_LIST(input, export_price)
+	VARSET_FROM_LIST(input, research_costs)
+	VARSET_FROM_LIST(input, category)
+	Initialize()
+	return src
+
+/datum/techweb_node/proc/on_design_deletion(datum/design/D)
+	prune_design_id(D.id)
+
+/datum/techweb_node/proc/on_node_deletion(datum/techweb_node/TN)
+	prune_node_id(TN.id)
+
+/datum/techweb_node/proc/prune_design_id(design_id)
+	design_ids -= design_id
+
+/datum/techweb_node/proc/prune_node_id(node_id)
+	prereq_ids -= node_id
+	unlock_ids -= node_id
+
 /datum/techweb_node/proc/get_price(datum/techweb/host)
 	if(host)
 		var/list/actual_costs = research_costs
-		if(host.boosted_nodes[src])
-			var/list/L = host.boosted_nodes[src]
+		if(host.boosted_nodes[id])
+			var/list/L = host.boosted_nodes[id]
 			for(var/i in L)
 				if(actual_costs[i])
 					actual_costs[i] -= L[i]