diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index ada3ecb2..9a2df34b 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -13,6 +13,17 @@
 #include "trigger.h"
 #include "car.h"
 
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+#include <glm/vec2.hpp>
+
+static const auto hero_transform =
+    glm::rotate(
+                glm::mat4(1.0),
+                glm::radians(65.0f),
+                glm::vec3(0.0, 0.0, 1.0)
+                );
+
 struct BulletInfo
 {
     CreatureWeakPtr c;
@@ -200,6 +211,37 @@ void InternalShot(Creature* c,
             }
         }
         bullet_dir.Rotate(bullet_angle / 180.0f);
+        #if 1
+        {
+            auto transform = glm::rotate(hero_transform,
+                                          bullet_born_angle * A8_PI,
+                                          glm::vec3(0.0, 1.0, 0.0));
+            glm::vec4 gun_muzzle_position(0.0, 0.0, 0.0, 0.0);
+            if (weapon_meta->gun_muzzle_position) {
+                gun_muzzle_position =
+                    glm::vec4(
+                              std::get<0>(*weapon_meta->gun_muzzle_position.get()),
+                              std::get<1>(*weapon_meta->gun_muzzle_position.get()),
+                              std::get<2>(*weapon_meta->gun_muzzle_position.get()),
+                              0
+                              );
+            }
+            glm::vec4 v = transform * gun_muzzle_position;
+            bullet_born_offset = a8::Vec2(v.x *10*1, v.z*10*1);
+            bullet_born_pos = c->GetPos() + bullet_born_offset;
+            if (c->IsPlayer()) {
+                a8::XPrintf("offset:%f,%f angle:%f angle_xy:%f,%f %f %f\n",
+                            {bullet_born_offset.x,
+                             bullet_born_offset.y,
+                             bullet_born_angle,
+                             c->GetAttackDir().x,
+                             c->GetAttackDir().y,
+                             (bullet_born_angle * A8_PI) / 3.14 *180,
+                             (bullet_born_angle * A8_PI - glm::radians(90.0f)) / 3.14 *180
+                            });
+            }
+        }
+        #endif
         {
             BulletInfo bullet_info;
             bullet_info.c = c->GetWeakPtrRef();
diff --git a/server/gameserver/metadata.h b/server/gameserver/metadata.h
index 0521fad7..a371d993 100644
--- a/server/gameserver/metadata.h
+++ b/server/gameserver/metadata.h
@@ -99,6 +99,7 @@ namespace MetaData
         //0,0,0,0,后座力
         std::vector<std::tuple<float, float, float, int, int>> bullet_born_offset;
         std::vector<std::tuple<int, a8::Vec2>> shoot_offsets;
+        std::shared_ptr<std::tuple<float, float, float>> gun_muzzle_position;
         std::array<int, IS_END> volume = {};
         int int_param1 = 0;
 	float float_param1 = 0;
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 8623b276..dcf92e24 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -462,6 +462,9 @@ Human* Room::FindEnemy(Human* hum)
 void Room::FillSMJoinedNotify(Player* self_hum, cs::SMJoinedNotify& msg)
 {
     msg.set_team_mode(msg.team_mode());
+    #if 0
+    msg.set_adjust_bullet(1);
+    #endif
 }
 
 void Room::ScatterDrop(a8::Vec2 center, int drop_id)