//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.

/datum/techweb_node
	var/id
	var/display_name = "Errored Node"
	var/description = "Why are you seeing this?"
	var/hidden = FALSE			//Whether it starts off hidden.
	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/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 = list()					//Point cost to research. type = amount
	var/category = "Misc"				//Category

/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]
			for(var/i in L)
				if(actual_costs[i])
					actual_costs[i] -= L[i]
		return actual_costs
	else
		return research_costs

/datum/techweb_node/proc/price_display(datum/techweb/TN)
	return techweb_point_display_generic(get_price(TN))