Compose vessels from definitions and capabilities

tests/test_vessel_composition.gd

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+extends SceneTree
+
+const VESSEL_DEFINITIONS = preload("res://VesselDefinitions.gd")
+
+var ships: Array = []
+var elapsed: float = 0.0
+var game_state: Node
+
+
+func _initialize() -> void:
+	game_state = root.get_node("GameState")
+	var scene: PackedScene = load("res://Ship.tscn")
+	for definition in VESSEL_DEFINITIONS.all():
+		var ship: Area2D = scene.instantiate()
+		ship.vessel_type = definition.definition_id
+		root.add_child(ship)
+		ships.append(ship)
+
+
+func _process(delta: float) -> bool:
+	elapsed += delta
+	if elapsed < 0.1:
+		return false
+	var definitions: Array = VESSEL_DEFINITIONS.all()
+	if ships.size() != definitions.size():
+		return _fail("catalog and composed fleet differ in size")
+	for i in range(definitions.size()):
+		var definition: Resource = definitions[i]
+		var ship: Node = ships[i]
+		if ship.definition == null or ship.definition.definition_id != definition.definition_id:
+			return _fail("%s did not resolve its definition" % definition.definition_id)
+		for capability in definition.capabilities:
+			if not ship.has_capability(capability):
+				return _fail("%s did not compose %s" % [definition.definition_id, capability])
+		if game_state.product_cost(definition.definition_id) != definition.build_cost \
+				or game_state.vessel_name(definition.definition_id) != definition.display_name:
+			return _fail("%s metadata did not come from its definition" % definition.definition_id)
+	if ships[0].has_capability("shield") or not ships[1].has_capability("shield"):
+		return _fail("shield behavior is not controlled by component presence")
+	if ships[2].has_capability("weapon") or not ships[2].has_capability("transport"):
+		return _fail("transporter capabilities were composed incorrectly")
+	print("TEST_VESSEL_COMPOSITION: PASS")
+	quit(0)
+	return true
+
+
+func _fail(message: String) -> bool:
+	print("TEST_VESSEL_COMPOSITION: FAIL (%s)" % message)
+	quit(1)
+	return true