extends Unit
class_name Enemy

# Класс противника

@export var detection_range: float = 10.0
@export var attack_range: float = 2.0
@export var attack_damage: float = 10.0
@export var attack_cooldown: float = 1.0

var target: Node3D = null
var attack_timer: float = 0.0

func _ready():
	super._ready()

func _physics_process(delta):
	attack_timer -= delta
	
	# Поиск цели (игрока)
	if target == null or not is_instance_valid(target):
		find_target()
	
	# Движение к цели
	if target and is_instance_valid(target):
		var distance = global_position.distance_to(target.global_position)
		
		if distance <= attack_range:
			# Атака - поворачиваемся к цели
			var look_direction = (target.global_position - global_position)
			look_direction.y = 0
			if look_direction.length() > 0.1:
				var angle = atan2(look_direction.x, look_direction.z)
				rotation.y = angle
			
			if attack_timer <= 0:
				attack(target)
				attack_timer = attack_cooldown
		elif distance <= detection_range:
			# Преследование - поворачиваемся и бежим к цели
			var direction = (target.global_position - global_position).normalized()
			velocity.x = direction.x * speed
			velocity.z = direction.z * speed
			
			# Поворачиваем врага в сторону цели
			var look_direction = (target.global_position - global_position)
			look_direction.y = 0
			if look_direction.length() > 0.1:
				var angle = atan2(look_direction.x, look_direction.z)
				rotation.y = angle
		else:
			# Остановка - не поворачиваемся
			velocity.x = move_toward(velocity.x, 0, speed)
			velocity.z = move_toward(velocity.z, 0, speed)
	else:
		# Остановка если нет цели
		velocity.x = move_toward(velocity.x, 0, speed)
		velocity.z = move_toward(velocity.z, 0, speed)
	
	# Применяем гравитацию
	if not is_on_floor():
		velocity.y -= 9.8 * delta
	else:
		velocity.y = 0
	
	super._physics_process(delta)

func find_target():
	# Ищем игрока в сцене
	var players = get_tree().get_nodes_in_group("player")
	if players.size() > 0:
		target = players[0]

func attack(target_unit: Node3D):
	# Атака цели
	if target_unit.has_method("take_damage"):
		target_unit.take_damage(attack_damage)