diff --git a/server/robotserver/virtualclient.cc b/server/robotserver/virtualclient.cc
index 9dc2ef6..07c3c73 100644
--- a/server/robotserver/virtualclient.cc
+++ b/server/robotserver/virtualclient.cc
@@ -4,6 +4,7 @@
 
 #include <a8/tcpclient.h>
 #include <a8/tcpclient2.h>
+#include <a8/timer.h>
 
 #include "virtualclient.h"
 #include "app.h"
@@ -39,7 +40,25 @@ void VirtualClient::UnInit()
 
 void VirtualClient::Update()
 {
-
+    if (state_ == VCS_Joined) {
+        long long tick = a8::XGetTickCount() - last_active_tick_;
+        if (tick > 1200) {
+            //          abort();
+        }
+        if (a8::XGetTickCount() - last_move_tick_ > 100) {
+            last_move_tick_ = a8::XGetTickCount();
+            SendMove();
+        }
+        if (a8::XGetTickCount() - last_move_dir_chg_tick_ > 2000 + 1000 * (rand() % 5)) {
+            last_move_dir_chg_tick_ = a8::XGetTickCount();
+            move_x = rand() % 1000;
+            move_y = rand() % 1000;
+            if (rand() % 5 == 0) {
+                move_x = -move_x;
+                move_y = -move_y;
+            }
+        }
+    }
 }
 
 void VirtualClient::SendJoin()
@@ -49,11 +68,32 @@ void VirtualClient::SendJoin()
     msg.set_account_id(account);
     msg.set_baseskin(14001);
     SendMsg(msg);
+    a8::XPrintf("sendjoin %s\n", {account});
+    a8::Timer::Instance()->AddDeadLineTimerAndAttach(
+                                                     1000 * 30 + (rand() % 15) * 1000,
+                                                     a8::XParams()
+                                                     .SetSender(this),
+                                                     [] (const a8::XParams& param)
+                                                     {
+                                                         VirtualClient* client = (VirtualClient*)param.sender.GetUserData();
+                                                         client->jumped_ = true;
+                                                     },
+                                                     &timer_attacher_.timer_list_
+                                                     );
 }
 
 void VirtualClient::SendMove()
 {
-
+    cs::CMMove msg;
+    if (move_x != 0 && move_y != 0) {
+        auto p = msg.mutable_move_dir();
+        p->set_x(move_x);
+        p->set_y(move_y);
+    }
+    msg.set_shot_start(true);
+    msg.set_shot_hold(true);
+    msg.set_jump(jumped_);
+    SendMsg(msg);
 }
 
 #if TCP_CLIENT2
@@ -62,6 +102,7 @@ void VirtualClient::on_error(a8::TcpClient2* sender, int errorId)
 void VirtualClient::on_error(a8::TcpClient* sender, int errorId)
 #endif
 {
+    abort();
     a8::UdpLog::Instance()->Error("VirtualClient errorid=%d", {errorId});
 }
 
@@ -85,6 +126,7 @@ void VirtualClient::on_disconnect(a8::TcpClient2* sender)
 void VirtualClient::on_disconnect(a8::TcpClient* sender)
 #endif
 {
+    abort();
     recv_bufflen_ = 0;
     a8::UdpLog::Instance()->Info("target server %d disconnected after 10s later reconnect", {instance_id});
     App::Instance()->AddIMMsg(IM_VirtualClientDisconnect,
@@ -138,5 +180,6 @@ void VirtualClient::on_socketread(a8::TcpClient* sender, char* buf, unsigned int
         memmove(recv_buff_, recv_buff_ + offset, recv_bufflen_ - offset);
     }
     recv_bufflen_ -= offset;
+    state_ = VCS_Joined;
+    last_active_tick_ = a8::XGetTickCount();
 }
-
diff --git a/server/robotserver/virtualclient.h b/server/robotserver/virtualclient.h
index ed7f95c..cf52f90 100644
--- a/server/robotserver/virtualclient.h
+++ b/server/robotserver/virtualclient.h
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <a8/timer_attacher.h>
+
 namespace a8
 {
     class TcpClient;
@@ -50,6 +52,13 @@ class VirtualClient
     VirtualClientState_e state_ = VCS_Init;
     char *recv_buff_ = nullptr;
     unsigned int recv_bufflen_ = 0;
+    long long last_active_tick_ = 0;
+    long long last_move_tick_ = 0;
+    int move_x = 0;
+    int move_y = 0;
+    long long last_move_dir_chg_tick_ = 0;
+    bool jumped_ = false;
+    a8::TimerAttacher timer_attacher_;
 
 #if TCP_CLIENT2
     a8::TcpClient2* tcp_client_ = nullptr;
diff --git a/third_party/a8engine b/third_party/a8engine
index f9222e3..6e5c873 160000
--- a/third_party/a8engine
+++ b/third_party/a8engine
@@ -1 +1 @@
-Subproject commit f9222e376f8a678a252932c4a3fb93860d7625f2
+Subproject commit 6e5c873aecdd5464324818307237bca83860e16a