Initial WhaleTown V2 frontend

2026-07-19 22:42:20 +08:00
commit 435c578dde
1421 changed files with 54486 additions and 0 deletions
--- a/_Core/managers/WebSocketManager.gd
+++ b/_Core/managers/WebSocketManager.gd
@@ -0,0 +1,462 @@
+extends Node
+
+class_name ChatWebSocketManager
+
+# ============================================================================
+# WebSocketManager.gd - WebSocket 连接生命周期管理（原生 WebSocket 版本）
+# ============================================================================
+# 管理 WebSocket 连接状态、自动重连和错误恢复
+#
+# 核心职责:
+# - 连接状态管理（断开、连接中、已连接、重连中）
+# - 自动重连机制（指数退避）
+# - 连接错误恢复
+# - WebSocket 消息发送/接收
+# ============================================================================
+# 使用方式:
+#   WebSocketManager.connect_to_game_server()
+#   WebSocketManager.connection_state_changed.connect(_on_state_changed)
+#
+# 注意事项:
+# - 作为自动加载单例，全局可访问
+# - 自动处理连接断开和重连
+# - 通过信号通知连接状态变化
+# ============================================================================
+
+const NetworkConfig = preload("res://_Core/utils/NetworkConfig.gd")
+
+# ============================================================================
+# 信号定义
+# ============================================================================
+
+# 连接状态变化信号
+# 参数:
+#   new_state: ConnectionState - 新的连接状态
+signal connection_state_changed(new_state: ConnectionState)
+
+# 连接丢失信号
+signal connection_lost()
+
+# 重连成功信号
+signal reconnection_succeeded()
+
+# 重连失败信号
+# 参数:
+#   attempt: int - 当前重连尝试次数
+#   max_attempts: int - 最大重连次数
+signal reconnection_failed(attempt: int, max_attempts: int)
+
+# WebSocket 消息接收信号
+# 参数:
+#   message: String - 接收到的消息内容（JSON 字符串）
+signal data_received(message: String)
+
+# ============================================================================
+# 枚举定义
+# ============================================================================
+
+# 连接状态枚举
+enum ConnectionState {
+	DISCONNECTED,   # 未连接
+	CONNECTING,     # 连接中
+	CONNECTED,      # 已连接
+	RECONNECTING,   # 重连中
+	ERROR           # 错误状态
+}
+
+# ============================================================================
+# 常量定义
+# ============================================================================
+
+# WebSocket 服务器 URL（原生 WebSocket）
+const WEBSOCKET_URL: String = "wss://whaletownend.xinghangee.icu/game"
+
+# 默认最大重连次数
+const DEFAULT_MAX_RECONNECT_ATTEMPTS: int = 5
+
+# 默认重连基础延迟（秒）
+const DEFAULT_RECONNECT_BASE_DELAY: float = 3.0
+
+# 最大重连延迟（秒）
+const MAX_RECONNECT_DELAY: float = 30.0
+
+# ============================================================================
+# 成员变量
+# ============================================================================
+
+# WebSocket peer
+var _websocket_peer: WebSocketPeer = WebSocketPeer.new()
+
+# 当前 WebSocket 地址
+var _websocket_url: String = WEBSOCKET_URL
+
+# 当前连接状态
+var _connection_state: ConnectionState = ConnectionState.DISCONNECTED
+
+# 自动重连启用标志
+var _auto_reconnect_enabled: bool = true
+
+# 最大重连次数
+var _max_reconnect_attempts: int = DEFAULT_MAX_RECONNECT_ATTEMPTS
+
+# 重连基础延迟
+var _reconnect_base_delay: float = DEFAULT_RECONNECT_BASE_DELAY
+
+# 当前重连尝试次数
+var _reconnect_attempt: int = 0
+
+# 重连定时器
+var _reconnect_timer: Timer
+
+# 只有客户端主动断开时才抑制自动重连。
+var _manual_disconnect_requested: bool = false
+
+# 当前 CLOSED 状态是否已经处理过（防止每帧重复处理 close 事件）
+var _closed_state_handled: bool = false
+
+# 心跳定时器
+var _heartbeat_timer: Timer
+
+# 心跳间隔（秒）
+const HEARTBEAT_INTERVAL: float = 30.0
+
+# ============================================================================
+# 生命周期方法
+# ============================================================================
+
+# 初始化
+func _ready() -> void:
+	_websocket_url = NetworkConfig.get_chat_ws_url()
+
+	# 设置重连定时器
+	_setup_reconnect_timer()
+
+	# 设置心跳定时器
+	_setup_heartbeat_timer()
+
+	# 启动处理循环
+	set_process(true)
+
+# 处理每帧
+func _process(_delta: float) -> void:
+	# 检查 WebSocket 状态变化
+	_check_websocket_state()
+
+	var state: WebSocketPeer.State = _websocket_peer.get_ready_state()
+
+	if state == WebSocketPeer.STATE_OPEN:
+		# 处理收到的数据
+		while _websocket_peer.get_available_packet_count() > 0:
+			var packet: PackedByteArray = _websocket_peer.get_packet()
+			var message: String = packet.get_string_from_utf8()
+
+			# 发射消息接收信号
+			data_received.emit(message)
+
+# 清理
+func _exit_tree() -> void:
+	_disconnect()
+
+	if is_instance_valid(_reconnect_timer):
+		_reconnect_timer.stop()
+
+	if is_instance_valid(_heartbeat_timer):
+		_heartbeat_timer.stop()
+
+# ============================================================================
+# 公共 API - 连接管理
+# ============================================================================
+
+# 连接到游戏服务器
+func connect_to_game_server(is_reconnect_attempt: bool = false) -> void:
+	if _connection_state == ConnectionState.CONNECTED or _connection_state == ConnectionState.CONNECTING:
+		push_warning("已经在连接或已连接状态")
+		return
+
+	if is_reconnect_attempt:
+		_set_connection_state(ConnectionState.RECONNECTING)
+	else:
+		_set_connection_state(ConnectionState.CONNECTING)
+	_manual_disconnect_requested = false
+	_closed_state_handled = false
+	# 仅在首次/手动连接时重置重连计数，重连流程保持累计尝试次数
+	if not is_reconnect_attempt:
+		_reconnect_attempt = 0
+
+	_websocket_peer = WebSocketPeer.new()
+	var err: Error = _websocket_peer.connect_to_url(_websocket_url)
+	if err != OK:
+		push_error("WebSocketManager: 连接失败，url=%s - %s" % [_websocket_url, error_string(err)])
+		_closed_state_handled = true
+		if _auto_reconnect_enabled:
+			_attempt_reconnect()
+		else:
+			_set_connection_state(ConnectionState.ERROR)
+		return
+
+	# 启动心跳
+	_start_heartbeat()
+
+# 断开 WebSocket 连接
+func disconnect_websocket() -> void:
+	_disconnect()
+
+# 断开连接（内部方法）
+func _disconnect() -> void:
+	_manual_disconnect_requested = true
+
+	# 停止重连定时器
+	if is_instance_valid(_reconnect_timer):
+		_reconnect_timer.stop()
+
+	# 停止心跳
+	if is_instance_valid(_heartbeat_timer):
+		_heartbeat_timer.stop()
+
+	# 关闭 WebSocket
+	if _websocket_peer.get_ready_state() == WebSocketPeer.STATE_OPEN:
+		_websocket_peer.close(1000, "Client disconnect")
+	# CONNECTING 状态无法可靠地原地取消；替换 peer 可隔离旧连接的后续状态。
+	_websocket_peer = WebSocketPeer.new()
+	_closed_state_handled = true
+
+	_set_connection_state(ConnectionState.DISCONNECTED)
+
+# 检查 WebSocket 是否已连接
+#
+# 返回值:
+#   bool - WebSocket 是否已连接
+func is_websocket_connected() -> bool:
+	return _connection_state == ConnectionState.CONNECTED
+
+# 获取当前连接状态
+#
+# 返回值:
+#   ConnectionState - 当前连接状态
+func get_connection_state() -> ConnectionState:
+	return _connection_state
+
+# ============================================================================
+# 公共 API - 消息发送
+# ============================================================================
+
+# 发送 WebSocket 消息
+#
+# 参数:
+#   message: String - 要发送的消息内容（JSON 字符串）
+#
+# 返回值:
+#   Error - 错误码，OK 表示成功
+func send_message(message: String) -> Error:
+	if _websocket_peer.get_ready_state() != WebSocketPeer.STATE_OPEN:
+		push_warning("WebSocketManager: 未连接，无法发送消息")
+		return ERR_UNCONFIGURED
+
+	var err: Error = _websocket_peer.send_text(message)
+	if err != OK:
+		push_error("WebSocketManager: 发送消息失败 - %s" % error_string(err))
+		return err
+
+	return OK
+
+# ============================================================================
+# 公共 API - 自动重连
+# ============================================================================
+
+# 启用/禁用自动重连
+#
+# 参数:
+#   enabled: bool - 是否启用自动重连
+#   max_attempts: int - 最大重连次数（默认 5）
+#   base_delay: float - 基础重连延迟，秒（默认 3.0）
+#
+# 使用示例:
+#   WebSocketManager.enable_auto_reconnect(true, 5, 3.0)
+func enable_auto_reconnect(enabled: bool, max_attempts: int = DEFAULT_MAX_RECONNECT_ATTEMPTS, base_delay: float = DEFAULT_RECONNECT_BASE_DELAY) -> void:
+	_auto_reconnect_enabled = enabled
+	_max_reconnect_attempts = max_attempts
+	_reconnect_base_delay = base_delay
+
+# 获取重连信息
+#
+# 返回值:
+#   Dictionary - 重连信息 {enabled, attempt, max_attempts, delay}
+func get_reconnect_info() -> Dictionary:
+	return {
+		"enabled": _auto_reconnect_enabled,
+		"attempt": _reconnect_attempt,
+		"max_attempts": _max_reconnect_attempts,
+		"next_delay": _calculate_reconnect_delay() if _connection_state == ConnectionState.RECONNECTING else 0.0
+	}
+
+# ============================================================================
+# 内部方法 - 连接状态管理
+# ============================================================================
+
+# 设置连接状态
+func _set_connection_state(new_state: ConnectionState) -> void:
+	if _connection_state == new_state:
+		return
+
+	_connection_state = new_state
+
+	# 发射信号
+	connection_state_changed.emit(new_state)
+
+# ============================================================================
+# 内部方法 - WebSocket 状态监控
+# ============================================================================
+
+# 检查 WebSocket 状态变化
+func _check_websocket_state() -> void:
+	# 必须先 poll 才能获取最新状态
+	_websocket_peer.poll()
+
+	var state: WebSocketPeer.State = _websocket_peer.get_ready_state()
+
+	match state:
+		WebSocketPeer.STATE_CONNECTING:
+			_closed_state_handled = false
+
+			# 正在连接
+			if _connection_state != ConnectionState.CONNECTING and _connection_state != ConnectionState.RECONNECTING:
+				_set_connection_state(ConnectionState.CONNECTING)
+
+		WebSocketPeer.STATE_OPEN:
+			_closed_state_handled = false
+
+			# 连接成功
+			if _connection_state != ConnectionState.CONNECTED:
+				_on_websocket_connected()
+
+		WebSocketPeer.STATE_CLOSING:
+			_closed_state_handled = false
+
+			# 正在关闭
+			pass
+
+		WebSocketPeer.STATE_CLOSED:
+			if _closed_state_handled:
+				return
+
+			_closed_state_handled = true
+
+			# 仅在连接生命周期中发生的关闭才触发关闭处理
+			var should_handle_close: bool = (
+				_connection_state == ConnectionState.CONNECTED
+				or _connection_state == ConnectionState.CONNECTING
+				or _connection_state == ConnectionState.RECONNECTING
+			)
+			if should_handle_close:
+				_on_websocket_closed()
+
+# WebSocket 连接成功处理
+func _on_websocket_connected() -> void:
+	# 如果是重连，发射重连成功信号
+	if _connection_state == ConnectionState.RECONNECTING:
+		_reconnect_attempt = 0
+		reconnection_succeeded.emit()
+
+	_set_connection_state(ConnectionState.CONNECTED)
+
+# WebSocket 连接关闭处理
+func _on_websocket_closed() -> void:
+	if not _manual_disconnect_requested and _auto_reconnect_enabled:
+		connection_lost.emit()
+		_attempt_reconnect()
+	else:
+		_set_connection_state(ConnectionState.DISCONNECTED)
+
+# ============================================================================
+# 内部方法 - 重连机制
+# ============================================================================
+
+# 设置重连定时器
+func _setup_reconnect_timer() -> void:
+	_reconnect_timer = Timer.new()
+	_reconnect_timer.one_shot = true
+	_reconnect_timer.autostart = false
+	add_child(_reconnect_timer)
+
+	_reconnect_timer.timeout.connect(_on_reconnect_timeout)
+
+# 尝试重连
+func _attempt_reconnect() -> void:
+	# 检查是否超过最大重连次数
+	if _reconnect_attempt >= _max_reconnect_attempts:
+		push_error("WebSocketManager: 达到最大重连次数 (%d)，停止重连" % _max_reconnect_attempts)
+		reconnection_failed.emit(_reconnect_attempt, _max_reconnect_attempts)
+		_set_connection_state(ConnectionState.ERROR)
+		return
+
+	_reconnect_attempt += 1
+	_set_connection_state(ConnectionState.RECONNECTING)
+
+	# 计算重连延迟（指数退避）
+	var delay: float = _calculate_reconnect_delay()
+
+	# 启动重连定时器
+	_reconnect_timer.start(delay)
+
+# 计算重连延迟（指数退避）
+func _calculate_reconnect_delay() -> float:
+	# 指数退避: base_delay * 2^(attempt-1)
+	var delay: float = _reconnect_base_delay * pow(2.0, _reconnect_attempt - 1)
+
+	# 限制最大延迟
+	return min(delay, MAX_RECONNECT_DELAY)
+
+# 重连定时器超时处理
+func _on_reconnect_timeout() -> void:
+	connect_to_game_server(true)
+
+# ============================================================================
+# 内部方法 - 心跳机制
+# ============================================================================
+
+# 设置心跳定时器
+func _setup_heartbeat_timer() -> void:
+	_heartbeat_timer = Timer.new()
+	_heartbeat_timer.wait_time = HEARTBEAT_INTERVAL
+	_heartbeat_timer.one_shot = false
+	_heartbeat_timer.autostart = false
+	add_child(_heartbeat_timer)
+
+	_heartbeat_timer.timeout.connect(_on_heartbeat)
+
+# 启动心跳
+func _start_heartbeat() -> void:
+	_heartbeat_timer.start()
+
+# 停止心跳
+func _stop_heartbeat() -> void:
+	_heartbeat_timer.stop()
+
+# 心跳超时处理
+func _on_heartbeat() -> void:
+	# 不发送心跳，避免服务器返回 "消息格式错误"
+	# 如果需要心跳，服务器应该支持特定格式
+	pass
+
+# ============================================================================
+# 工具方法
+# ============================================================================
+
+# 获取连接状态描述
+#
+# 返回值:
+#   String - 连接状态描述
+func get_state_description() -> String:
+	match _connection_state:
+		ConnectionState.DISCONNECTED:
+			return "未连接"
+		ConnectionState.CONNECTING:
+			return "连接中"
+		ConnectionState.CONNECTED:
+			return "已连接"
+		ConnectionState.RECONNECTING:
+			return "重连中 (%d/%d)" % [_reconnect_attempt, _max_reconnect_attempts]
+		ConnectionState.ERROR:
+			return "错误"
+		_:
+			return "未知状态"