feat: 重写 network.rs — NetMessage/NetworkCmd/NetworkEvent + bincode serde 测试

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

core/src/network.rs

@@ -1,61 +1,137 @@
 use serde::{Deserialize, Serialize};
 
-/// 游戏网络消息
+/// 网络传输的游戏消息（bincode 序列化）
 #[derive(Debug, Clone, Serialize, Deserialize)]
-pub enum GameMessage {
+pub enum NetMessage {
     Move { x: usize, y: usize, turn: u32 },
     Undo { steps: u32 },
     Resign,
-    Chat(String),
-    Heartbeat,
 }
 
-/// 网络连接角色
+impl NetMessage {
+    pub fn to_bytes(&self) -> Vec<u8> {
+        bincode::serialize(self).unwrap_or_default()
+    }
+
+    pub fn from_bytes(data: &[u8]) -> Option<Self> {
+        bincode::deserialize(data).ok()
+    }
+}
+
+/// commands 层 → 网络线程
+#[derive(Debug)]
+pub enum NetworkCmd {
+    SendMove { x: usize, y: usize, turn: u32 },
+    SendUndo { steps: u32 },
+    SendResign,
+    Shutdown,
+}
+
+/// 网络线程 → commands 层
+#[derive(Debug, Clone)]
+pub enum NetworkEvent {
+    RemoteMove { x: usize, y: usize },
+    RemoteUndo { steps: u32 },
+    RemoteResign,
+    ClientConnected,
+    ClientDisconnected,
+    Error(String),
+    Listening(u16),
+    Connected,
+}
+
+/// 网络角色
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum NetworkRole {
     Server,
     Client,
 }
 
-/// 网络会话配置
-#[derive(Debug, Clone)]
-pub struct NetworkConfig {
-    pub role: NetworkRole,
-    pub bind_port: u16,
-    pub remote_addr: String,
-    pub remote_port: u16,
+/// 网络循环句柄（在独立线程中运行）
+pub struct NetworkLoop {
+    role: NetworkRole,
+    running: bool,
+    cmd_rx: std::sync::mpsc::Receiver<NetworkCmd>,
+    event_tx: std::sync::mpsc::Sender<NetworkEvent>,
 }
 
-/// 网络会话状态
-#[derive(Debug, Clone)]
-pub struct NetworkSession {
-    pub role: NetworkRole,
-    pub is_connected: bool,
-    pub config: NetworkConfig,
-    pending_messages: Vec<GameMessage>,
-}
-
-impl NetworkSession {
-    pub fn new(config: NetworkConfig) -> Self {
+impl NetworkLoop {
+    /// 创建 Server 端
+    pub fn new_server(
+        cmd_rx: std::sync::mpsc::Receiver<NetworkCmd>,
+        event_tx: std::sync::mpsc::Sender<NetworkEvent>,
+    ) -> Self {
         Self {
-            role: config.role,
-            is_connected: false,
-            config,
-            pending_messages: Vec::new(),
+            role: NetworkRole::Server,
+            running: false,
+            cmd_rx,
+            event_tx,
         }
     }
 
-    /// 发送消息 (实际 renet 集成在 gui 层处理)
-    pub fn enqueue_message(&mut self, msg: GameMessage) {
-        self.pending_messages.push(msg);
+    /// 创建 Client 端
+    pub fn new_client(
+        cmd_rx: std::sync::mpsc::Receiver<NetworkCmd>,
+        event_tx: std::sync::mpsc::Sender<NetworkEvent>,
+    ) -> Self {
+        Self {
+            role: NetworkRole::Client,
+            running: false,
+            cmd_rx,
+            event_tx,
+        }
+    }
 }
 
-    /// 取出待发送的消息
-    pub fn drain_messages(&mut self) -> Vec<GameMessage> {
-        std::mem::take(&mut self.pending_messages)
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_net_message_move_roundtrip() {
+        let msg = NetMessage::Move { x: 7, y: 7, turn: 0 };
+        let bytes = msg.to_bytes();
+        let decoded = NetMessage::from_bytes(&bytes).unwrap();
+        match decoded {
+            NetMessage::Move { x, y, turn } => {
+                assert_eq!(x, 7);
+                assert_eq!(y, 7);
+                assert_eq!(turn, 0);
+            }
+            _ => panic!("wrong variant"),
+        }
     }
 
-    pub fn set_connected(&mut self, connected: bool) {
-        self.is_connected = connected;
+    #[test]
+    fn test_net_message_undo_roundtrip() {
+        let msg = NetMessage::Undo { steps: 1 };
+        let bytes = msg.to_bytes();
+        let decoded = NetMessage::from_bytes(&bytes).unwrap();
+        assert!(matches!(decoded, NetMessage::Undo { steps: 1 }));
+    }
+
+    #[test]
+    fn test_net_message_resign_roundtrip() {
+        let msg = NetMessage::Resign;
+        let bytes = msg.to_bytes();
+        let decoded = NetMessage::from_bytes(&bytes).unwrap();
+        assert!(matches!(decoded, NetMessage::Resign));
+    }
+
+    #[test]
+    fn test_network_cmd_channel() {
+        let (tx, rx) = std::sync::mpsc::channel();
+        tx.send(NetworkCmd::SendMove { x: 7, y: 7, turn: 0 }).unwrap();
+        tx.send(NetworkCmd::Shutdown).unwrap();
+
+        let mut received = Vec::new();
+        while let Ok(cmd) = rx.try_recv() {
+            match cmd {
+                NetworkCmd::Shutdown => break,
+                NetworkCmd::SendMove { x, y, turn } => received.push((x, y, turn)),
+                _ => {}
+            }
+        }
+        assert_eq!(received, vec![(7, 7, 0)]);
     }
 }