extends Area3D
class_name BattleAttackArea

@onready var character: Character = (get_owner() as Character)
@onready var battle: Battle = (%Battle as Battle)
@onready var collision: CollisionShape3D = (%BattleAttackAreaCollision as CollisionShape3D)

var is_active: bool
var alive_time: float
var attack_info: Struct.AttackInfo
var attack_id_set: Dictionary = {}
var attack_hit_info_list: Array[Struct.AttackHitInfo] = []


func _ready():
	body_entered.connect(on_body_entered)


func _process(delta: float) -> void:
	if is_active:
		alive_time -= delta
		if alive_time <= 0:
			settle_attack_all()
			set_active(false)
	settle_attack()


func refresh_attack_area(attack_info_new: Struct.AttackInfo) -> void:
	settle_attack_all()

	attack_info = attack_info_new
	var offset_xz: Vector2 = attack_info.attack_dir * attack_info.attack_box.offset.x
	var offset_y: float = attack_info.attack_box.offset.y
	var offset: Vector3 = Vector3(offset_xz.x, offset_y, offset_xz.y)
	var shape: Shape3D = attack_info.attack_box.shape
	collision.position = offset
	collision.shape = shape

	attack_id_set.clear()
	alive_time = Setting.animation_frame_rate
	set_active(false)
	set_active(true)

func settle_attack_all() -> void:
	while attack_hit_info_list.size() > 0:
		settle_attack()

func settle_attack() -> void:
	if len(attack_hit_info_list) == 0:
		return
	var attack_hit_info: Struct.AttackHitInfo = attack_hit_info_list.pop_at(0)
	if not attack_hit_info.hit_target:
		return
	battle.on_attack_character(attack_hit_info.hit_target, attack_hit_info.attack_info)

func on_body_entered(body: Node3D):
	call_deferred("on_body_entereddeferred", body)


func on_body_entereddeferred(body: Node3D):
	if not body is Character:
		return
	var character_to: Character = body as Character
	if attack_id_set.has(character_to.id):
		return
	if attack_info.attack.is_rebound:
		if character_to != character and character_to.get_status("is_floating"):
			return
	var attack_hit_info: Struct.AttackHitInfo = Struct.AttackHitInfo.new()
	attack_hit_info.attack_info = attack_info
	attack_hit_info.hit_target = character_to
	attack_hit_info_list.append(attack_hit_info)
	attack_id_set[character_to.id] = true


func set_active(value: bool) -> void:
	if value:
		alive_time = Setting.animation_frame_rate
	else:
		alive_time = 0

	is_active = value
	collision.disabled = not value