extends SceneTree

# Headless gameplay test: run with
#   godot --headless -s res://tests/test_exploration_tracker.gd
# Verifies ExplorationTracker marks the fleet's current chunk as explored
# once the fleet is there, while a distant chunk the fleet never visited
# stays unexplored - this is what lets the world map reveal only chunks
# actually seen instead of the whole generated world at once.

var main_scene: Node
var fleet: Node
var tracker: Node
var elapsed: float = 0.0
var teleported: bool = false


func _initialize() -> void:
	var packed: PackedScene = load("res://world/Main.tscn")
	main_scene = packed.instantiate()
	root.add_child(main_scene)
	fleet = main_scene.get_node("Fleet")
	tracker = main_scene.get_node("ExplorationTracker")


func _process(delta: float) -> bool:
	if not teleported:
		# Wait one tick so Fleet._ready() has run and fleet.ships is
		# populated before we try to teleport them - reposition attempted
		# synchronously in _initialize() would silently no-op on an empty
		# ships array.
		var target_pos: Vector2 = Vector2(5000, -3000)
		for ship in fleet.ships:
			ship.position = target_pos
		fleet.move_to(target_pos)
		teleported = true
		return false

	elapsed += delta
	if elapsed < 0.2:
		return false

	var visited_chunk: Vector2i = WorldGen.chunk_coords(Vector2(5000, -3000))
	var far_chunk: Vector2i = Vector2i(9999, 9999)

	var explored: Array = tracker.get_explored_chunks()
	var visited_ok: bool = explored.has(visited_chunk)
	var far_unexplored: bool = not explored.has(far_chunk)

	print("visited_chunk=%s in_explored=%s far_chunk=%s in_explored=%s" % [
		visited_chunk, visited_ok, far_chunk, not far_unexplored
	])

	if visited_ok and far_unexplored:
		print("TEST_EXPLORATION_TRACKER: PASS")
		quit(0)
	else:
		print("TEST_EXPLORATION_TRACKER: FAIL")
		quit(1)
	return true