2v2队伍互斥选择

server/src/socket/roomHandler.js

@@ -163,20 +163,12 @@ function registerRoomHandlers(ws, { broadcastToRoom, joinRoom, leaveAllRooms, ro
     const teamBCount = waiting.players.filter(p => p.team === 'B').length;
 
     if (finalTeam === 'A' && teamACount >= perTeamSeats) {
-      // A队已满，自动分配到B队
-      if (teamBCount >= perTeamSeats) {
-        ws.sendEvent('error', { message: '两队均已满员' });
+      ws.sendEvent('error', { message: 'A队已满，请选择其他队伍', code: 'TEAM_FULL' });
       return;
-      }
-      finalTeam = 'B';
     } else if (finalTeam === 'B' && teamBCount >= perTeamSeats) {
-      // B队已满，自动分配到A队
-      if (teamACount >= perTeamSeats) {
-        ws.sendEvent('error', { message: '两队均已满员' });
+      ws.sendEvent('error', { message: 'B队已满，请选择其他队伍', code: 'TEAM_FULL' });
       return;
     }
-      finalTeam = 'A';
-    }
 
     // 分配递增 playerId
     const nextId = (roomPlayerCounter.get(rid) || 0) + 1;