feat：增加多角色在线功能

- 增加远程登录角色精灵
- 基于后端接口完成位置同步
- 实现多人在线以及跳转
- 增加个人房间功能

scenes/characters/PlayerController.gd.uid

@@ -0,0 +1 @@
+uid://fdswi18nel8n

scenes/characters/RemotePlayer.gd

@@ -0,0 +1,87 @@
+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)

scenes/characters/RemotePlayer.gd.uid

@@ -0,0 +1 @@
+uid://dtbajfsljdht5

scenes/characters/player.tscn

@@ -1,6 +1,6 @@
 [gd_scene load_steps=13 format=3 uid="uid://b2f8e24plwqgj"]
 
-[ext_resource type="Script" uid="uid://btka26hrcvgen" path="res://Scenes/characters/player.gd" id="1_script"]
+[ext_resource type="Script" uid="uid://fdswi18nel8n" path="res://scenes/characters/PlayerController.gd" id="1_script"]
 [ext_resource type="Texture2D" uid="uid://cghab1hkx5lg5" path="res://assets/characters/player_spritesheet.png" id="2_texture"]
 
 [sub_resource type="CapsuleShape2D" id="CapsuleShape2D_1"]

scenes/characters/remote_player.tscn

@@ -0,0 +1,175 @@
+[gd_scene load_steps=13 format=3 uid="uid://chb8mcqhfnkkr"]
+
+[ext_resource type="Script" uid="uid://dtbajfsljdht5" path="res://scenes/characters/RemotePlayer.gd" id="1_mu86i"]
+[ext_resource type="Texture2D" uid="uid://cghab1hkx5lg5" path="res://assets/characters/player_spritesheet.png" id="2_7oc7u"]
+
+[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_1"]
+radius = 21.0
+height = 48.0
+
+[sub_resource type="Animation" id="Animation_idle_down"]
+resource_name = "idle_down"
+length = 0.1
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [0]
+}
+
+[sub_resource type="Animation" id="Animation_idle_left"]
+resource_name = "idle_left"
+length = 0.1
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [12]
+}
+
+[sub_resource type="Animation" id="Animation_idle_right"]
+resource_name = "idle_right"
+length = 0.1
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [8]
+}
+
+[sub_resource type="Animation" id="Animation_idle_up"]
+resource_name = "idle_up"
+length = 0.1
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0),
+"transitions": PackedFloat32Array(1),
+"update": 1,
+"values": [4]
+}
+
+[sub_resource type="Animation" id="Animation_walk_down"]
+resource_name = "walk_down"
+length = 0.8
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.2, 0.4, 0.6),
+"transitions": PackedFloat32Array(1, 1, 1, 1),
+"update": 1,
+"values": [0, 1, 2, 3]
+}
+
+[sub_resource type="Animation" id="Animation_walk_left"]
+resource_name = "walk_left"
+length = 0.8
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.2, 0.4, 0.6),
+"transitions": PackedFloat32Array(1, 1, 1, 1),
+"update": 1,
+"values": [12, 13, 14, 15]
+}
+
+[sub_resource type="Animation" id="Animation_walk_right"]
+resource_name = "walk_right"
+length = 0.8
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.2, 0.4, 0.6),
+"transitions": PackedFloat32Array(1, 1, 1, 1),
+"update": 1,
+"values": [8, 9, 10, 11]
+}
+
+[sub_resource type="Animation" id="Animation_walk_up"]
+resource_name = "walk_up"
+length = 0.8
+loop_mode = 1
+tracks/0/type = "value"
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/path = NodePath("Sprite2D:frame")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/keys = {
+"times": PackedFloat32Array(0, 0.2, 0.4, 0.6),
+"transitions": PackedFloat32Array(1, 1, 1, 1),
+"update": 1,
+"values": [4, 5, 6, 7]
+}
+
+[sub_resource type="AnimationLibrary" id="AnimationLibrary_1"]
+_data = {
+&"idle_down": SubResource("Animation_idle_down"),
+&"idle_left": SubResource("Animation_idle_left"),
+&"idle_right": SubResource("Animation_idle_right"),
+&"idle_up": SubResource("Animation_idle_up"),
+&"walk_down": SubResource("Animation_walk_down"),
+&"walk_left": SubResource("Animation_walk_left"),
+&"walk_right": SubResource("Animation_walk_right"),
+&"walk_up": SubResource("Animation_walk_up")
+}
+
+[node name="RemotePlayer" type="CharacterBody2D"]
+script = ExtResource("1_mu86i")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+position = Vector2(1.5000005, -24.5)
+texture = ExtResource("2_7oc7u")
+hframes = 4
+vframes = 4
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+position = Vector2(2, -24)
+shape = SubResource("CapsuleShape2D_1")
+disabled = true
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+libraries = {
+&"": SubResource("AnimationLibrary_1")
+}