# fly_dynamic_collision_test —— 40250 FlyingInstance 动态 Actor 碰撞回归。
#
# 参考 FlyingInstance.cpp::Update：
#   collision sphere = max(move_distance * 2, configured radius)
#   hitonanothermonster -> HittedObjectSet 去重 -> OnExplodingAtAnotherTarget
#   pierce 后继续飞行，耗尽才爆炸。
extends SceneTree

const FlyObject = preload("res://fly_object.gd")

var _failures := 0

func _ck(condition: bool, message: String) -> void:
	if condition:
		return
	_failures += 1
	printerr("FAIL: ", message)

func _init() -> void:
	await _run()
	quit(1 if _failures else 0)

func _run() -> void:
	await process_frame
	_test_two_actors_and_pierce()
	_test_same_actor_is_deduplicated()
	if _failures == 0:
		print("PASS: fly_dynamic_collision_test")

func _new_manager() -> Array:
	var mount := Node3D.new()
	get_root().add_child(mount)
	var manager := FlyObject.new()
	manager.manual_step = true
	mount.add_child(manager)
	manager.setup(mount)
	return [manager, mount]

func _test_two_actors_and_pierce() -> void:
	var fixture := _new_manager()
	var manager: FlyObject = fixture[0]
	var mount: Node3D = fixture[1]
	var first := Node3D.new()
	first.position = Vector3(0.0, 1.0, 5.0)
	get_root().add_child(first)
	var second := Node3D.new()
	second.position = Vector3(0.0, 1.0, 10.0)
	get_root().add_child(second)
	manager.set_actor_provider(func() -> Array:
		return [
			{"vid": 200, "node": first, "center": first.position, "radius": 0.35},
			{"vid": 300, "node": second, "center": second.position, "radius": 0.35},
		]
	)

	var events: Array[int] = []
	var data := FlyObject.FlyData.new()
	data.init_vel = 10.0
	data.flat_range = 30.0
	data.bomb_range = 0.05
	data.collision_sphere_radius = 0.05
	data.hit_on_another_monster = true
	data.pierce_count = 1
	var inst = manager.spawn(Vector3(0.0, 1.0, 0.0), Vector3(0.0, 1.0, 30.0), false, data)
	inst.handler = func(event: String, _pos: Vector3, vid: int) -> void:
		if event == "at_another":
			events.append(vid)

	for _i in 100:
		if manager.active_count() == 0:
			break
		manager.step(0.1)
	_ck(events == [200, 300], "pierce projectile hits first and second Actor exactly once")
	_ck(manager.active_count() == 0, "non-piercing second Actor hit removes projectile")

	manager.clear_for_map_change()
	first.free()
	second.free()
	manager.free()
	mount.free()

func _test_same_actor_is_deduplicated() -> void:
	var fixture := _new_manager()
	var manager: FlyObject = fixture[0]
	var mount: Node3D = fixture[1]
	var target := Node3D.new()
	target.position = Vector3(0.0, 1.0, 5.0)
	get_root().add_child(target)
	manager.set_actor_provider(func() -> Array:
		return [{"vid": 400, "node": target, "center": target.position, "radius": 0.35}]
	)

	var events: Array[int] = []
	var data := FlyObject.FlyData.new()
	data.init_vel = 10.0
	data.flat_range = 12.0
	data.bomb_range = 0.05
	data.collision_sphere_radius = 0.05
	data.hit_on_another_monster = true
	data.pierce_count = 2
	var inst = manager.spawn(Vector3(0.0, 1.0, 0.0), Vector3(0.0, 1.0, 30.0), false, data)
	inst.handler = func(event: String, _pos: Vector3, vid: int) -> void:
		if event == "at_another":
			events.append(vid)

	for _i in 100:
		if manager.active_count() == 0:
			break
		manager.step(0.1)
	_ck(events == [400], "same dynamic Actor is blocked by HittedObjectSet")
	_ck(manager.active_count() == 0, "deduplicated projectile eventually expires")

	manager.clear_for_map_change()
	target.free()
	manager.free()
	mount.free()