Queue lab research from local stock

GameState.gd

@@ -357,6 +357,7 @@ const BUILD_TIMES: Dictionary = {
 	VESSEL_SHIELD: 16.0,
 	VESSEL_TRANSPORTER: 8.0,
 }
+const LAB_RESEARCH_TIME: float = 8.0
 
 
 # Test seam. Headless tests need the timed path - queued, started, finishing
@@ -368,6 +369,10 @@ var build_time_scale: float = 1.0
 func build_time(product: String) -> float:
 	return float(BUILD_TIMES.get(product, 10.0)) * build_time_scale
 
+
+func lab_research_time() -> float:
+	return LAB_RESEARCH_TIME * build_time_scale
+
 # Researched at the ship lab, per vessel type. Separate from SKILL_TREE on
 # purpose: that gates what the player may build at all and is a strategic
 # spine, while these are repeatable tuning on a vessel you already have.
@@ -712,6 +717,50 @@ func _advance_production(delta: float) -> void:
 		order_completed.emit(int(b.id), product)
 
 
+func queue_lab_research(lab_id: int, upgrade_id: String) -> bool:
+	var lab: Dictionary = find_building(lab_id)
+	if lab.is_empty() or lab.type != BUILDING_SHIP_LAB or upgrade_id == "":
+		return false
+	var orders: Array = lab.get("research_orders", [])
+	if not orders.is_empty() or (upgrade_id != UNLOCK_SHIELD_VESSEL and upgrade_maxed(upgrade_id)):
+		return false
+	orders.append({"id": upgrade_id, "elapsed": 0.0, "started": false})
+	lab.research_orders = orders
+	return true
+
+
+func lab_research_order(lab_id: int) -> Dictionary:
+	var lab: Dictionary = find_building(lab_id)
+	var orders: Array = lab.get("research_orders", [])
+	return {} if orders.is_empty() else orders[0]
+
+
+func _advance_lab_research(delta: float) -> void:
+	for lab in buildings:
+		if lab.type != BUILDING_SHIP_LAB:
+			continue
+		var orders: Array = lab.get("research_orders", [])
+		if orders.is_empty():
+			continue
+		var order: Dictionary = orders[0]
+		var id: String = String(order.id)
+		var cost: int = UNLOCK_SHIELD_COST if id == UNLOCK_SHIELD_VESSEL else upgrade_cost(id)
+		if not bool(order.started):
+			if int(lab.get("stock", 0)) < cost:
+				continue
+			lab.stock = int(lab.stock) - cost
+			order.started = true
+		order.elapsed = float(order.elapsed) + delta
+		if float(order.elapsed) < lab_research_time():
+			continue
+		if id == UNLOCK_SHIELD_VESSEL:
+			vessel_levels[id] = 1
+		else:
+			vessel_levels[id] = upgrade_level(id) + 1
+		vessel_upgraded.emit(id)
+		orders.pop_front()
+
+
 func claim_stored_vessel(index: int) -> String:
 	# Hands one finished vessel over to be crewed. Returns its type, or ""
 	# when there is nothing there - the caller decides whether the fleet
@@ -829,6 +878,7 @@ func _process(delta: float) -> void:
 	# Runs in the autoload, so mining and transport continue while the player
 	# is on a planet's surface or nowhere near either.
 	_advance_production(delta)
+	_advance_lab_research(delta)
 	_advance_vessel_deliveries(delta)
 	for e in extractors:
 		e.mining_progress = float(e.get("mining_progress", 0.0)) + delta * EXTRACTOR_RATE