diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index ba259f2..e9c290d 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -7,6 +7,7 @@
 #include "obstacle.h"
 #include "player.h"
 #include "app.h"
+#include "movement.h"
 
 Bullet::Bullet():Entity()
 {
@@ -16,6 +17,8 @@ Bullet::Bullet():Entity()
 
 Bullet::~Bullet()
 {
+    delete movement;
+    movement = nullptr;
     --App::Instance()->perf.entity_num[ET_Bullet];
 }
 
@@ -23,6 +26,8 @@ void Bullet::Initialize()
 {
     Entity::Initialize();
     RecalcSelfCollider();
+    movement = new MovementComponent();
+    movement->owner = this;
 }
 
 void Bullet::Update(int delta_time)
@@ -194,7 +199,6 @@ bool Bullet::IsBomb()
         meta->i->_inventory_slot() == 6;
 }
 
-#ifdef RAY_DETECTION
 void Bullet::RayDetectionUpdate()
 {
     pos = pos + dir * gun_meta->i->bullet_speed() / (float)SERVER_FRAME_RATE;
@@ -219,11 +223,12 @@ void Bullet::RayDetectionUpdate()
                 }
             }
         }//end for
+        movement->GetCollisionObjects(objects);
         float bullet_range = gun_meta->i->range();
         if (gun_upgrade_meta && gun_upgrade_meta->attr[EA_ShotRange] > 0) {
             bullet_range += gun_upgrade_meta->attr[EA_ShotRange];
         }
-        if (!objects.empty() || distance > bullet_range || distance >= target_distance ||
+        if (!objects.empty() || distance > bullet_range || distance >= movement->target_distance ||
             (IsBomb() && meta->i->_inventory_slot() != 4 && distance >= fly_distance)
             ) {
             if (IsBomb()) {
@@ -239,7 +244,6 @@ void Bullet::RayDetectionUpdate()
         }
     }
 }
-#endif
 
 void Bullet::ClearRayData()
 {
@@ -263,12 +267,8 @@ void Bullet::FrameDetectionUpdate()
         std::set<Entity*> objects;
         for (auto& grid : grid_list) {
             for (Human* hum: grid->human_list) {
-#if 0
-                if (hum != player && !hum->dead) {
-#else
                 if (hum != player && !hum->dead &&
                     (hum->team_id == 0 || player->team_id != hum->team_id)) {
-#endif
                     if (TestCollision(hum)) {
                         objects.insert(hum);
                     }
diff --git a/server/gameserver/bullet.h b/server/gameserver/bullet.h
index 052635c..05caaa4 100644
--- a/server/gameserver/bullet.h
+++ b/server/gameserver/bullet.h
@@ -12,6 +12,7 @@ namespace MetaData
 class Human;
 class Obstacle;
 class CircleCollider;
+class MovementComponent;
 class Bullet : public Entity
 {
  public:
@@ -23,15 +24,14 @@ class Bullet : public Entity
     Vector2D born_pos;
     Vector2D born_dir;
     float fly_distance = 0.0f;
+    MovementComponent* movement = nullptr;
 
     Bullet();
     virtual ~Bullet() override;
     virtual void Initialize() override;
     virtual void Update(int delta_time) override;
     void RecalcSelfCollider();
-#ifdef RAY_DETECTION
     void RayDetection();
-#endif
     void ClearRayData();
 
  private:
@@ -39,9 +39,7 @@ class Bullet : public Entity
     void OnHit(std::set<Entity*>& objects);
     void ProcBomb();
     bool IsBomb();
-#ifdef RAY_DETECTION
     void RayDetectionUpdate();
-#endif
     void FrameDetectionUpdate();
 
 private:
diff --git a/server/gameserver/movement.cc b/server/gameserver/movement.cc
index e69de29..eee649d 100644
--- a/server/gameserver/movement.cc
+++ b/server/gameserver/movement.cc
@@ -0,0 +1,13 @@
+#include "precompile.h"
+
+#include "movement.h"
+
+void MovementComponent::GetCollisionObjects(std::set<Entity*>& objects)
+{
+
+}
+
+bool MovementComponent::TestCollision()
+{
+    return false;
+}
diff --git a/server/gameserver/movement.h b/server/gameserver/movement.h
index 71606b7..c5c04d0 100644
--- a/server/gameserver/movement.h
+++ b/server/gameserver/movement.h
@@ -5,10 +5,10 @@ class MovementComponent
 {
  public:
     Entity* owner = nullptr;
-#ifdef RAY_DETECTION
     float target_distance = 0.0f;
     Vector2D target_point;
     std::set<Entity*> detection_objects;
-#endif
 
+    void GetCollisionObjects(std::set<Entity*>& objects);
+    bool TestCollision();
 };
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index 5d76468..4a55c2e 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -604,6 +604,9 @@ void Room::CreateBullet(Human* hum, Weapon* weapon,
     bullet->Initialize();
     AddObjectLater(bullet);
     grid_service.AddBullet(bullet);
+#ifdef RAY_DETECTION
+    bullet->RayDetection();
+#endif
 }
 
 void Room::RemoveObjectLater(Entity* entity)