diff --git a/server/gameserver/boxdrop.cc b/server/gameserver/boxdrop.cc
index 13625f5d..ce02dbe5 100644
--- a/server/gameserver/boxdrop.cc
+++ b/server/gameserver/boxdrop.cc
@@ -2,6 +2,8 @@
 
 #include "boxdrop.h"
 
+const int BOX_ID = 150001;
+
 BoxDrop::BoxDrop(Room* room):room_(room)
 {
 
@@ -26,3 +28,8 @@ void BoxDrop::OnObstacleDeadDrop(Obstacle* ob)
 {
 
 }
+
+void BoxDrop::Drop(int num, const glm::vec3& center)
+{
+
+}
diff --git a/server/gameserver/boxdrop.h b/server/gameserver/boxdrop.h
index 79af6dec..b0d4b105 100644
--- a/server/gameserver/boxdrop.h
+++ b/server/gameserver/boxdrop.h
@@ -14,6 +14,10 @@ class BoxDrop : public std::enable_shared_from_this<BoxDrop>
     void OnHeroDeadDrop(Hero* hero);
     void OnObstacleDeadDrop(Obstacle* ob);
 
+ private:
+
+    void Drop(int num, const glm::vec3& center);
+
  private:
     Room* room_ = nullptr;
 };