Supply lab research with transporters

tests/test_lab_transporter_delivery.gd

@@ -0,0 +1,46 @@
+extends SceneTree
+
+var state: Node
+var lab_id: int
+var elapsed: float = 0.0
+
+
+func _initialize() -> void:
+	state = root.get_node("GameState")
+	state.buildings.clear()
+	state.extractors.clear()
+	state.transporters.clear()
+	state.reset_progression()
+	state.rocks = 100
+	state.build_time_scale = 0.02
+	state.add_building(state.BUILDING_MOTHERSHIP, Vector2.ZERO)
+	var hub_id: int = state.add_building(state.BUILDING_TRANSPORT_HUB, Vector2(50, 0))
+	lab_id = state.add_building(state.BUILDING_SHIP_LAB, Vector2(100, 0))
+	state.transporters.append({"hub_id": hub_id, "state": state.TRANSPORTER_IDLE,
+		"target_id": 0, "extractor_index": -1, "carrying": 0, "progress": 1.0,
+		"from": Vector2(50, 0), "to": Vector2(50, 0)})
+	if not state.queue_lab_research(lab_id, "int_damage"):
+		return _fail("could not queue lab research")
+	if state.outstanding_cost(lab_id) != state.upgrade_cost("int_damage"):
+		return _fail("queued research did not expose its ore demand")
+
+
+func _process(delta: float) -> bool:
+	elapsed += delta
+	if state.upgrade_level("int_damage") == 1:
+		if state.lab_research_order(lab_id).is_empty():
+			print("transporter supplied queued lab research end to end")
+			print("TEST_LAB_TRANSPORTER_DELIVERY: PASS")
+			quit(0)
+			return true
+	if elapsed > 5.0:
+		return _fail("lab still waiting: demand=%d transporter=%s stock=%d" % [
+			state.outstanding_cost(lab_id), state.transporters[0].state,
+			state.building_stock(lab_id)])
+	return false
+
+
+func _fail(message: String) -> bool:
+	print("TEST_LAB_TRANSPORTER_DELIVERY: FAIL (%s)" % message)
+	quit(1)
+	return true