extends CharacterBody2D

# 远程玩家脚本
# 负责处理位置同步和动画播放
# 严格遵循 Visual Only 原则：无输入处理，无物理碰撞

# 公共属性 (snake_case)
var user_id: String = ""
var target_position: Vector2 = Vector2.ZERO

# 内部状态
var last_direction: String = "down"
@onready var animation_player: AnimationPlayer = $AnimationPlayer
@onready var sprite: Sprite2D = $Sprite2D

func _ready():
	# 初始化时确保无物理处理
	set_physics_process(false)
	# 初始位置设为当前位置
	target_position = global_position
	
	# 确保禁用物理碰撞 (双重保险)
	if has_node("CollisionShape2D"):
		$CollisionShape2D.disabled = true

func _process(delta: float):
	# 1. 平滑移动插值
	var current_pos = global_position
	var dist = current_pos.distance_to(target_position)
	
	if dist > 1.0:
		# 简单的线性插值，速度系数 10.0 可根据需要调整
		var new_pos = current_pos.lerp(target_position, 10.0 * delta)
		
		# 计算移动向量用于动画朝向
		var move_vec = new_pos - current_pos
		_update_animation(move_vec)
		
		global_position = new_pos
	else:
		# 距离很近时直接吸附并播放待机动画
		global_position = target_position
		_play_idle_animation()

# 统一初始化方法
# data: 包含 camelCase 字段的字典 (userId, username, position 等)
func setup(data: Dictionary):
	if data.has("userId"):
		user_id = data.userId
	
	if data.has("position"):
		var pos_data = data.position
		if pos_data.has("x") and pos_data.has("y"):
			var new_pos = Vector2(pos_data.x, pos_data.y)
			global_position = new_pos
			target_position = new_pos
			
	# 如果有名字显示需求，可在此扩展
	# if data.has("username") and has_node("Label"):
	# 	$Label.text = data.username

# 更新目标位置
func update_position(new_pos: Vector2):
	target_position = new_pos

# 动画更新逻辑 (复用 PlayerController 的命名规范)
func _update_animation(move_vec: Vector2):
	if not animation_player:
		return
		
	# 确定主方向
	if abs(move_vec.x) > abs(move_vec.y):
		if move_vec.x > 0:
			last_direction = "right"
		else:
			last_direction = "left"
	else:
		if move_vec.y > 0:
			last_direction = "down"
		else:
			last_direction = "up"
			
	animation_player.play("walk_" + last_direction)

func _play_idle_animation():
	if animation_player:
		animation_player.play("idle_" + last_direction)