fix: 修复聊天消息显示问题

- AuthScene: 修复节点路径错误 (WhaleFrame, UsernameInput)
- ChatManager: 修复 timestamp 类型转换 (String -> float)
- ChatMessage: 修复节点引用获取方式和 UI 显示
- ChatUI: 优化消息列表布局对齐

_Core/managers/ChatManager.gd

@@ -583,7 +583,7 @@ func _handle_chat_render(data: Dictionary) -> void:
 	var from_user: String = data.get("from", "")
 	var content: String = data.get("txt", "")
 	var show_bubble: bool = data.get("bubble", false)
-	var timestamp: float = data.get("timestamp", 0.0)
+	var timestamp: float = float(data.get("timestamp", "0.0"))
 
 	print("📨 收到聊天消息: ", from_user, " -> ", content)
 

scenes/prefabs/ui/ChatMessage.gd

@@ -33,16 +33,38 @@ class_name ChatMessage
 # ============================================================================
 
 # 用户名标签
-@onready var username_label: Label = %UsernameLabel
+var username_label: Label
 
 # 时间戳标签
-@onready var timestamp_label: Label = %TimestampLabel
+var timestamp_label: Label
 
 # 内容标签
-@onready var content_label: RichTextLabel = %ContentLabel
+var content_label: RichTextLabel
 
 # 用户信息容器
-@onready var user_info_container: HBoxContainer = %UserInfoContainer
+var user_info_container: HBoxContainer
+
+# ============================================================================
+# 生命周期方法
+# ============================================================================
+
+func _ready() -> void:
+	# 使用 get_node 获取节点引用
+	username_label = get_node_or_null("VBoxContainer/UserInfoContainer/UsernameLabel")
+	timestamp_label = get_node_or_null("VBoxContainer/UserInfoContainer/TimestampLabel")
+	content_label = get_node_or_null("VBoxContainer/ContentLabel")
+	user_info_container = get_node_or_null("VBoxContainer/UserInfoContainer")
+	
+	# 调试输出
+	if username_label:
+		print("✅ UsernameLabel found")
+	else:
+		print("❌ UsernameLabel NOT found!")
+		# 打印所有子节点帮助调试
+		print("Available children: ", _get_all_children_names(self))
+	
+	# 应用最大宽度限制
+	custom_minimum_size.x = min(max_width, get_parent().size.x)
 
 # ============================================================================
 # 成员变量
@@ -51,15 +73,6 @@ class_name ChatMessage
 # 是否为自己发送的消息
 var _is_self: bool = false
 
-# ============================================================================
-# 生命周期方法
-# ============================================================================
-
-# 准备就绪
-func _ready() -> void:
-	# 应用最大宽度限制
-	custom_minimum_size.x = min(max_width, get_parent().size.x)
-
 # ============================================================================
 # 公共 API
 # ============================================================================
@@ -77,14 +90,27 @@ func _ready() -> void:
 func set_message(from_user: String, content: String, timestamp: float, is_self: bool = false) -> void:
 	_is_self = is_self
 
-	# 设置用户名
+	# 设置用户名（带空值检查）
+	if username_label:
 		username_label.text = from_user
+	else:
+		push_error("ChatMessage: username_label is null!")
+		return
 
 	# 设置内容
-	content_label.text = content
+	if content_label:
+		content_label.clear()  # 清除默认文本和所有内容
+		content_label.bbcode_text = content  # 使用 bbcode_text 因为 bbcode_enabled = true
+	else:
+		push_error("ChatMessage: content_label is null!")
+		return
 
 	# 设置时间戳
+	if timestamp_label:
 		timestamp_label.text = _format_timestamp(timestamp)
+	else:
+		push_error("ChatMessage: timestamp_label is null!")
+		return
 
 	# 应用样式
 	_apply_style()
@@ -95,6 +121,16 @@ func set_message(from_user: String, content: String, timestamp: float, is_self:
 
 	# 应用样式（自己和他人的消息不同）
 func _apply_style() -> void:
+	if not username_label or not timestamp_label or not user_info_container:
+		return
+	
+	# 设置大小约束 - 宽度固定，高度适应内容
+	if get_parent():
+		custom_minimum_size.x = min(max_width, get_parent().size.x)
+	
+	# 重要：设置垂直 size flags 让 Panel 适应内容高度
+	size_flags_vertical = Control.SIZE_SHRINK_BEGIN
+	
 	if _is_self:
 		# 自己的消息：右侧对齐，蓝色背景
 		size_flags_horizontal = Control.SIZE_SHRINK_END
@@ -165,3 +201,11 @@ func _format_timestamp(timestamp: float) -> String:
 	
 	# 格式化为 HH:MM
 	return "%02d:%02d" % [datetime.hour, datetime.minute]
+
+# 获取所有子节点名称（调试用）
+func _get_all_children_names(node: Node, _indent: int = 0) -> String:
+	var result := ""
+	for child in node.get_children():
+		result += "  ".repeat(_indent) + child.name + "\n"
+		result += _get_all_children_names(child, _indent + 1)
+	return result

scenes/prefabs/ui/ChatMessage.tscn

@@ -4,8 +4,8 @@
 
 [node name="ChatMessage" type="Panel"]
 offset_right = 400.0
-offset_bottom = 100.0
 size_flags_horizontal = 3
+size_flags_vertical = 6
 script = ExtResource("1")
 
 [node name="VBoxContainer" type="VBoxContainer" parent="."]
@@ -18,28 +18,23 @@ grow_vertical = 2
 theme_override_constants/separation = 4
 
 [node name="UserInfoContainer" type="HBoxContainer" parent="VBoxContainer"]
-unique_name_in_owner = true
 layout_mode = 2
 theme_override_constants/separation = 8
 
 [node name="UsernameLabel" type="Label" parent="VBoxContainer/UserInfoContainer"]
-unique_name_in_owner = true
 layout_mode = 2
 theme_override_colors/font_color = Color(0.2, 0.4, 0.8, 1)
 theme_override_font_sizes/font_size = 14
 text = "Username"
 
 [node name="TimestampLabel" type="Label" parent="VBoxContainer/UserInfoContainer"]
-unique_name_in_owner = true
 layout_mode = 2
 theme_override_colors/font_color = Color(0.5, 0.5, 0.5, 1)
 theme_override_font_sizes/font_size = 12
 text = "12:34"
 
 [node name="ContentLabel" type="RichTextLabel" parent="VBoxContainer"]
-unique_name_in_owner = true
 layout_mode = 2
 size_flags_vertical = 3
 bbcode_enabled = true
-text = "Message content here"
 fit_content = true

scenes/ui/AuthScene.gd

@@ -36,10 +36,10 @@ signal login_success(username: String)
 @onready var register_panel: Panel = $CenterContainer/RegisterPanel              # 注册面板
 @onready var title_label: Label = $CenterContainer/LoginPanel/VBoxContainer/TitleLabel        # 标题标签
 @onready var subtitle_label: Label = $CenterContainer/LoginPanel/VBoxContainer/SubtitleLabel  # 副标题标签
-@onready var whale_frame: TextureRect = $WhaleFrame                              # 鲸鱼装饰框
+@onready var whale_frame: TextureRect = $CenterContainer/WhaleFrame               # 鲸鱼装饰框
 
 # 登录表单输入控件
-@onready var login_username: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/UsernameContainer/UsernameInput
+@onready var login_username: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/UsernameInput
 @onready var login_password: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/PasswordContainer/PasswordInput
 @onready var login_verification: LineEdit = $CenterContainer/LoginPanel/VBoxContainer/LoginForm/VerificationContainer/VerificationInputContainer/VerificationInput
 

scenes/ui/ChatUI.tscn

@@ -61,12 +61,13 @@ theme_override_constants/separation = 8
 unique_name_in_owner = true
 layout_mode = 2
 size_flags_vertical = 3
+horizontal_scroll_mode = 0
 
 [node name="MessageList" type="VBoxContainer" parent="ChatPanel/VBoxContainer/ChatHistory"]
 unique_name_in_owner = true
 layout_mode = 2
 size_flags_horizontal = 3
-size_flags_vertical = 3
+size_flags_vertical = 1
 theme_override_constants/separation = 8
 
 [node name="TextureRect2" type="TextureRect" parent="ChatPanel"]