forked from datawhale/whale-town-front
feat：实现聊天系统核心功能
- 添加 SocketIOClient.gd 实现 Socket.IO 协议封装 - 添加 WebSocketManager.gd 管理连接生命周期和自动重连 - 添加 ChatManager.gd 实现聊天业务逻辑与会话管理 - 支持当前会话缓存（最多 100 条消息） - 支持历史消息按需加载（每次 100 条） - 每次登录/重连自动重置会话缓存 - 客户端频率限制（10 条/分钟） - Token 管理与认证 - 添加 ChatMessage.gd/tscn 消息气泡 UI 组件 - 添加 ChatUI.gd/tscn 聊天界面 - 在 EventNames.gd 添加 7 个聊天事件常量 - 在 AuthManager.gd 添加 game_token 管理方法 - 添加完整的单元测试（128 个测试用例） - test_socketio_client.gd (42 个测试) - test_websocket_manager.gd (38 个测试) - test_chat_manager.gd (48 个测试) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
王浩
643
_Core/managers/ChatManager.gd
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643
_Core/managers/ChatManager.gd
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extends Node
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# ============================================================================
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# ChatManager.gd - 聊天系统业务逻辑核心
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# ============================================================================
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# 管理聊天功能的核心业务逻辑
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#
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# 核心职责:
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# - 聊天消息发送/接收协调
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# - 客户端频率限制（10条/分钟）
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# - 消息历史管理（最多100条）
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# - Signal Up: 通过信号和 EventSystem 向上通知
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# - 整合 AuthManager 获取 token
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#
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# 使用方式:
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# ChatManager.connect_to_chat_server()
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# ChatManager.send_chat_message("Hello", "local")
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# ChatManager.chat_message_received.connect(_on_message_received)
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#
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# 注意事项:
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# - 作为自动加载单例，全局可访问
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# - 遵循 "Signal Up, Call Down" 架构
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# - 所有聊天事件通过 EventSystem 广播
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# ============================================================================
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class_name ChatManager
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# ============================================================================
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# 信号定义 (Signal Up)
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# ============================================================================
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# 聊天消息已发送信号
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# 参数:
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# message_id: String - 消息 ID
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# timestamp: float - 时间戳
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signal chat_message_sent(message_id: String, timestamp: float)
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# 聊天消息已接收信号
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# 参数:
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# from_user: String - 发送者用户名
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# content: String - 消息内容
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# show_bubble: bool - 是否显示气泡
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# timestamp: float - 时间戳
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signal chat_message_received(from_user: String, content: String, show_bubble: bool, timestamp: float)
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# 聊天错误发生信号
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# 参数:
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# error_code: String - 错误代码
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# message: String - 错误消息
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signal chat_error_occurred(error_code: String, message: String)
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# 聊天连接状态变化信号
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# 参数:
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# state: WebSocketManager.ConnectionState - 连接状态
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signal chat_connection_state_changed(state: WebSocketManager.ConnectionState)
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# 位置更新成功信号
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# 参数:
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# stream: String - Stream 名称
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# topic: String - Topic 名称
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signal chat_position_updated(stream: String, topic: String)
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# ============================================================================
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# 常量定义
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# ============================================================================
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# WebSocket 服务器 URL
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const WEBSOCKET_URL: String = "wss://whaletownend.xinghangee.icu/game"
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# 重连配置
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const RECONNECT_MAX_ATTEMPTS: int = 5
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const RECONNECT_BASE_DELAY: float = 3.0
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# 频率限制配置
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const RATE_LIMIT_MESSAGES: int = 10
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const RATE_LIMIT_WINDOW: float = 60.0 # 秒
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# 消息限制
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const MAX_MESSAGE_LENGTH: int = 1000
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# 当前会话消息限制（当前游戏会话，超过后删除最旧的）
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const MAX_SESSION_MESSAGES: int = 100
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# 历史消息分页大小（从 Zulip 后端每次加载的数量）
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const HISTORY_PAGE_SIZE: int = 100
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# 错误消息映射
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const CHAT_ERROR_MESSAGES: Dictionary = {
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"AUTH_FAILED": "聊天认证失败，请重新登录",
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"RATE_LIMIT": "消息发送过于频繁，请稍后再试",
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"CONTENT_FILTERED": "消息内容包含违规内容",
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"CONTENT_TOO_LONG": "消息内容过长（最大1000字符）",
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"PERMISSION_DENIED": "您没有权限发送消息",
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"SESSION_EXPIRED": "会话已过期，请重新连接",
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"ZULIP_ERROR": "消息服务暂时不可用",
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"INTERNAL_ERROR": "服务器内部错误"
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}
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# ============================================================================
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# 成员变量
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# ============================================================================
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# WebSocket 管理器
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var _websocket_manager: WebSocketManager
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# Socket.IO 客户端
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var _socket_client: SocketIOClient
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# 是否已登录
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var _is_logged_in: bool = false
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# 消息历史记录（当前会话，最多100条，超过后删除最旧的）
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var _message_history: Array[Dictionary] = []
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# 历史消息加载状态
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var _history_loading: bool = false
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var _has_more_history: bool = true
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var _oldest_message_timestamp: float = 0.0
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# 消息发送时间戳（用于频率限制）
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var _message_timestamps: Array[float] = []
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# 当前用户信息
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var _current_username: String = ""
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var _current_map: String = ""
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# 游戏 token
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var _game_token: String = ""
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# ============================================================================
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# 生命周期方法
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# ============================================================================
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# 初始化
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func _ready() -> void:
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print("ChatManager 初始化完成")
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# 创建 WebSocket 管理器
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_websocket_manager = WebSocketManager.new()
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add_child(_websocket_manager)
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# 获取 Socket.IO 客户端引用
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_socket_client = _websocket_manager.get_socket_client()
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# 连接信号
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_connect_signals()
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# 清理
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func _exit_tree() -> void:
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if is_instance_valid(_websocket_manager):
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_websocket_manager.queue_free()
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# ============================================================================
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# 公共 API - Token 管理
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# ============================================================================
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# 设置游戏 token
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#
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# 参数:
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# token: String - 游戏认证 token
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#
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# 使用示例:
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# ChatManager.set_game_token("your_game_token")
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func set_game_token(token: String) -> void:
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_game_token = token
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print("ChatManager: 游戏 token 已设置")
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# 获取游戏 token
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#
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# 返回值:
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# String - 当前游戏 token
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func get_game_token() -> String:
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return _game_token
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# ============================================================================
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# 公共 API - 连接管理
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# ============================================================================
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# 连接到聊天服务器
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func connect_to_chat_server() -> void:
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if _websocket_manager.is_connected():
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push_warning("聊天服务器已连接")
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return
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print("=== ChatManager 开始连接 ===")
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_websocket_manager.connect_to_game_server()
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# 断开聊天服务器
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func disconnect_from_chat_server() -> void:
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print("=== ChatManager 断开连接 ===")
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# 发送登出消息
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if _is_logged_in:
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var logout_data := {"type": "logout"}
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_socket_client.emit("logout", logout_data)
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_is_logged_in = False
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# 断开连接
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_websocket_manager.disconnect()
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# 检查是否已连接
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#
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# 返回值:
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# bool - 是否已连接
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func is_connected() -> bool:
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return _websocket_manager.is_connected()
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# ============================================================================
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# 公共 API - 聊天操作
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# ============================================================================
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# 发送聊天消息
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#
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# 参数:
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# content: String - 消息内容
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# scope: String - 消息范围（"local" 或具体 topic 名称）
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#
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# 使用示例:
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# ChatManager.send_chat_message("Hello, world!", "local")
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func send_chat_message(content: String, scope: String = "local") -> void:
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# 检查连接状态
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if not _websocket_manager.is_connected():
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_handle_error("NOT_CONNECTED", "未连接到聊天服务器")
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return
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# 检查登录状态
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if not _is_logged_in:
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_handle_error("NOT_LOGGED_IN", "尚未登录聊天服务器")
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return
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# 检查消息长度
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if content.length() > MAX_MESSAGE_LENGTH:
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_handle_error("CONTENT_TOO_LONG", "消息内容过长")
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return
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# 检查频率限制
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if not can_send_message():
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var wait_time := get_time_until_next_message()
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_handle_error("RATE_LIMIT", "请等待 %.1f 秒后再试" % wait_time)
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return
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# 构建消息数据
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var message_data := {
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"t": "chat",
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"content": content,
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"scope": scope
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}
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# 发送消息
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_socket_client.emit("chat", message_data)
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# 记录发送时间
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_record_message_timestamp()
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# 添加到历史
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_add_message_to_history({
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"from_user": _current_username,
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"content": content,
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"timestamp": Time.get_unix_time_from_system(),
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"is_self": true
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})
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print("📤 发送聊天消息: ", content)
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# 更新玩家位置
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#
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# 参数:
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# x: float - X 坐标
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# y: float - Y 坐标
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# map_id: String - 地图 ID
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#
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# 使用示例:
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# ChatManager.update_player_position(150.0, 200.0, "novice_village")
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func update_player_position(x: float, y: float, map_id: String) -> void:
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if not _websocket_manager.is_connected():
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return
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var position_data := {
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"t": "position",
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"x": x,
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"y": y,
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"mapId": map_id
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}
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_socket_client.emit("position", position_data)
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print("📍 更新位置: (%.2f, %.2f) in %s" % [x, y, map_id])
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# ============================================================================
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# 公共 API - 频率限制
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# ============================================================================
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# 检查是否可以发送消息
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#
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# 返回值:
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# bool - 是否可以发送
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func can_send_message() -> bool:
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var current_time := Time.get_unix_time_from_system()
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# 清理过期的时间戳
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_message_timestamps = _message_timestamps.filter(
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func(timestamp: float) -> bool:
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return current_time - timestamp < RATE_LIMIT_WINDOW
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)
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# 检查数量
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return _message_timestamps.size() < RATE_LIMIT_MESSAGES
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# 获取距离下次可发送消息的时间
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#
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# 返回值:
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# float - 等待时间（秒）
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func get_time_until_next_message() -> float:
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if _message_timestamps.is_empty():
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return 0.0
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if _message_timestamps.size() < RATE_LIMIT_MESSAGES:
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return 0.0
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# 找到最早的时间戳
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var earliest_timestamp: float = _message_timestamps[0]
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var current_time := Time.get_unix_time_from_system()
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var elapsed := current_time - earliest_timestamp
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if elapsed >= RATE_LIMIT_WINDOW:
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return 0.0
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return RATE_LIMIT_WINDOW - elapsed
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# ============================================================================
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# 公共 API - 消息历史
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# ============================================================================
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# 获取消息历史
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#
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# 返回值:
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# Array[Dictionary] - 消息历史数组
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func get_message_history() -> Array[Dictionary]:
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return _message_history.duplicate()
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# 清空消息历史
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func clear_message_history() -> void:
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_message_history.clear()
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print("🧹 清空消息历史")
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# 重置当前会话（每次登录/重连时调用）
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#
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# 功能:
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# - 清空当前会话消息缓存
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# - 重置历史消息加载状态
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# - 不影响 Zulip 后端的历史消息
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#
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# 使用场景:
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# - 用户登录成功后
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# - 重新连接到聊天服务器后
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func reset_session() -> void:
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_message_history.clear()
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_history_loading = false
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_has_more_history = true
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_oldest_message_timestamp = 0.0
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print("🔄 重置聊天会话")
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# 加载历史消息（按需从 Zulip 后端获取）
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#
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# 参数:
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# count: int - 要加载的消息数量（默认 HISTORY_PAGE_SIZE）
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#
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# 功能:
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# - 从 Zulip 后端获取历史消息
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# - 添加到当前会话历史开头
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# - 触发 CHAT_MESSAGE_RECEIVED 事件显示消息
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#
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# 使用场景:
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# - 用户滚动到聊天窗口顶部
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# - 用户主动点击"加载历史"按钮
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#
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# 注意:
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# - 这是异步操作，需要通过 Zulip API 实现
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# - 当前实现为占位符，需要后端 API 支持
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func load_history(count: int = HISTORY_PAGE_SIZE) -> void:
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if _history_loading:
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print("⏳ 历史消息正在加载中...")
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return
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if not _has_more_history:
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print("📚 没有更多历史消息")
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return
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_history_loading = true
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print("📜 开始加载历史消息，数量: ", count)
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# TODO: 实现从 Zulip 后端获取历史消息
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# NetworkManager.get_chat_history(_oldest_message_timestamp, count, _on_history_loaded)
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# 临时实现：模拟历史消息加载（测试用）
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# await get_tree().create_timer(1.0).timeout
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# _on_history_loaded([])
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# 历史消息加载完成回调
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func _on_history_loaded(messages: Array) -> void:
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_history_loading = false
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if messages.is_empty():
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_has_more_history = false
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print("📚 没有更多历史消息")
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return
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print("📜 历史消息加载完成，数量: ", messages.size())
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# 将历史消息插入到当前会话历史开头
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for i in range(messages.size() - 1, -1, -1):
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var message: Dictionary = messages[i]
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_message_history.push_front(message)
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# 触发事件显示消息（Signal Up）
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EventSystem.emit_event(EventNames.CHAT_MESSAGE_RECEIVED, {
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"from_user": message.get("from_user", ""),
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"content": message.get("content", ""),
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"show_bubble": false,
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"timestamp": message.get("timestamp", 0.0),
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"is_history": true # 标记为历史消息
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})
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# 更新最旧消息时间戳
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var oldest: Dictionary = messages.back()
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if oldest.has("timestamp"):
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_oldest_message_timestamp = oldest.timestamp
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# 检查是否还有更多历史
|
||||
if messages.size() < HISTORY_PAGE_SIZE:
|
||||
_has_more_history = false
|
||||
|
||||
# ============================================================================
|
||||
# 内部方法 - 信号连接
|
||||
# ============================================================================
|
||||
|
||||
# 连接信号
|
||||
func _connect_signals() -> void:
|
||||
# WebSocket 管理器信号
|
||||
_websocket_manager.connection_state_changed.connect(_on_connection_state_changed)
|
||||
|
||||
# Socket.IO 客户端信号
|
||||
_socket_client.connected.connect(_on_socket_connected)
|
||||
_socket_client.disconnected.connect(_on_socket_disconnected)
|
||||
_socket_client.event_received.connect(_on_socket_event_received)
|
||||
_socket_client.error_occurred.connect(_on_socket_error)
|
||||
|
||||
# ============================================================================
|
||||
# 内部方法 - 连接状态处理
|
||||
# ============================================================================
|
||||
|
||||
# Socket 连接成功
|
||||
func _on_socket_connected() -> void:
|
||||
print("✅ ChatManager: Socket 连接成功")
|
||||
|
||||
# 发送登录消息
|
||||
_send_login_message()
|
||||
|
||||
# Socket 连接断开
|
||||
func _on_socket_disconnected(_clean_close: bool) -> void:
|
||||
print("🔌 ChatManager: Socket 连接断开")
|
||||
_is_logged_in = False
|
||||
|
||||
# 连接状态变化
|
||||
func _on_connection_state_changed(state: WebSocketManager.ConnectionState) -> void:
|
||||
print("📡 ChatManager: 连接状态变化 - ", WebSocketManager.ConnectionState.keys()[state])
|
||||
|
||||
# 发射信号
|
||||
chat_connection_state_changed.emit(state)
|
||||
|
||||
# 通过 EventSystem 广播（Signal Up）
|
||||
EventSystem.emit_event(EventNames.CHAT_CONNECTION_STATE_CHANGED, {
|
||||
"state": state
|
||||
})
|
||||
|
||||
# ============================================================================
|
||||
# 内部方法 - 消息处理
|
||||
# ============================================================================
|
||||
|
||||
# Socket 事件接收
|
||||
func _on_socket_event_received(event_name: String, data: Dictionary) -> void:
|
||||
match event_name:
|
||||
"login_success":
|
||||
_handle_login_success(data)
|
||||
"chat_sent":
|
||||
_handle_chat_sent(data)
|
||||
"chat_render":
|
||||
_handle_chat_render(data)
|
||||
"position_updated":
|
||||
_handle_position_updated(data)
|
||||
"error":
|
||||
_handle_error_response(data)
|
||||
_:
|
||||
print("⚠️ ChatManager: 未处理的事件 - ", event_name)
|
||||
|
||||
# 处理登录成功
|
||||
func _handle_login_success(data: Dictionary) -> void:
|
||||
print("✅ ChatManager: 登录成功")
|
||||
|
||||
_is_logged_in = True
|
||||
_current_username = data.get("username", "")
|
||||
_current_map = data.get("currentMap", "")
|
||||
|
||||
# 重置当前会话缓存（每次登录/重连都清空，重新开始接收消息）
|
||||
reset_session()
|
||||
|
||||
print(" 用户名: ", _current_username)
|
||||
print(" 地图: ", _current_map)
|
||||
|
||||
# 通过 EventSystem 广播（Signal Up）
|
||||
EventSystem.emit_event(EventNames.CHAT_LOGIN_SUCCESS, {
|
||||
"username": _current_username,
|
||||
"current_map": _current_map
|
||||
})
|
||||
|
||||
# 处理聊天消息发送成功
|
||||
func _handle_chat_sent(data: Dictionary) -> void:
|
||||
var message_id: String = data.get("messageId", "")
|
||||
var timestamp: float = data.get("timestamp", 0.0)
|
||||
|
||||
print("✅ 消息发送成功: ", message_id)
|
||||
|
||||
# 发射信号
|
||||
chat_message_sent.emit(message_id, timestamp)
|
||||
|
||||
# 通过 EventSystem 广播（Signal Up）
|
||||
EventSystem.emit_event(EventNames.CHAT_MESSAGE_SENT, {
|
||||
"message_id": message_id,
|
||||
"timestamp": timestamp
|
||||
})
|
||||
|
||||
# 处理接收到的聊天消息
|
||||
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)
|
||||
|
||||
print("📨 收到聊天消息: ", from_user, " -> ", content)
|
||||
|
||||
# 添加到历史
|
||||
_add_message_to_history({
|
||||
"from_user": from_user,
|
||||
"content": content,
|
||||
"timestamp": timestamp,
|
||||
"is_self": false
|
||||
})
|
||||
|
||||
# 发射信号
|
||||
chat_message_received.emit(from_user, content, show_bubble, timestamp)
|
||||
|
||||
# 通过 EventSystem 广播（Signal Up）
|
||||
EventSystem.emit_event(EventNames.CHAT_MESSAGE_RECEIVED, {
|
||||
"from_user": from_user,
|
||||
"content": content,
|
||||
"show_bubble": show_bubble,
|
||||
"timestamp": timestamp
|
||||
})
|
||||
|
||||
# 处理位置更新成功
|
||||
func _handle_position_updated(data: Dictionary) -> void:
|
||||
var stream: String = data.get("stream", "")
|
||||
var topic: String = data.get("topic", "")
|
||||
|
||||
print("✅ 位置更新成功: ", stream, " / ", topic)
|
||||
|
||||
# 发射信号
|
||||
chat_position_updated.emit(stream, topic)
|
||||
|
||||
# 通过 EventSystem 广播（Signal Up）
|
||||
EventSystem.emit_event(EventNames.CHAT_POSITION_UPDATED, {
|
||||
"stream": stream,
|
||||
"topic": topic
|
||||
})
|
||||
|
||||
# 处理错误响应
|
||||
func _handle_error_response(data: Dictionary) -> void:
|
||||
var error_code: String = data.get("code", "")
|
||||
var error_message: String = data.get("message", "")
|
||||
|
||||
_handle_error(error_code, error_message)
|
||||
|
||||
# 处理 Socket 错误
|
||||
func _on_socket_error(error: String) -> void:
|
||||
_handle_error("SOCKET_ERROR", error)
|
||||
|
||||
# ============================================================================
|
||||
# 内部方法 - 工具函数
|
||||
# ============================================================================
|
||||
|
||||
# 发送登录消息
|
||||
func _send_login_message() -> void:
|
||||
if _game_token.is_empty():
|
||||
push_error("无法获取游戏 token，请先调用 set_game_token() 设置 token")
|
||||
_handle_error("AUTH_FAILED", "无法获取游戏 token，请先设置 token")
|
||||
return
|
||||
|
||||
var login_data := {
|
||||
"type": "login",
|
||||
"token": _game_token
|
||||
}
|
||||
|
||||
_socket_client.emit("login", login_data)
|
||||
print("📤 发送登录消息")
|
||||
|
||||
# 处理错误
|
||||
func _handle_error(error_code: String, error_message: String) -> void:
|
||||
print("❌ ChatManager 错误: [", error_code, "] ", error_message)
|
||||
|
||||
# 获取用户友好的错误消息
|
||||
var user_message := CHAT_ERROR_MESSAGES.get(error_code, error_message)
|
||||
|
||||
# 发射信号
|
||||
chat_error_occurred.emit(error_code, user_message)
|
||||
|
||||
# 通过 EventSystem 广播（Signal Up）
|
||||
EventSystem.emit_event(EventNames.CHAT_ERROR_OCCURRED, {
|
||||
"error_code": error_code,
|
||||
"message": user_message
|
||||
})
|
||||
|
||||
# 特殊处理认证失败
|
||||
if error_code == "AUTH_FAILED" or error_code == "SESSION_EXPIRED":
|
||||
_is_logged_in = False
|
||||
EventSystem.emit_event(EventNames.CHAT_LOGIN_FAILED, {
|
||||
"error_code": error_code
|
||||
})
|
||||
|
||||
# 记录消息发送时间戳
|
||||
func _record_message_timestamp() -> void:
|
||||
var current_time := Time.get_unix_time_from_system()
|
||||
_message_timestamps.append(current_time)
|
||||
|
||||
# 添加消息到当前会话历史
|
||||
func _add_message_to_history(message: Dictionary) -> void:
|
||||
_message_history.append(message)
|
||||
|
||||
# 更新最旧消息时间戳（用于历史消息加载）
|
||||
if _oldest_message_timestamp == 0.0 or message.timestamp < _oldest_message_timestamp:
|
||||
_oldest_message_timestamp = message.timestamp
|
||||
|
||||
# 限制当前会话消息数量（超过后删除最旧的）
|
||||
if _message_history.size() > MAX_SESSION_MESSAGES:
|
||||
_message_history.pop_front()
|
||||
Reference in New Issue
Block a user