diff --git a/server/gameserver/android.ai.cc b/server/gameserver/android.ai.cc
index 32f08ea..635e0c5 100644
--- a/server/gameserver/android.ai.cc
+++ b/server/gameserver/android.ai.cc
@@ -196,7 +196,7 @@ void AndroidAI::DoMoveOldAI()
         for (int i = 0; i < speed; ++i) {
             a8::Vec2 old_pos = hum->GetPos();
             hum->SetPos(hum->GetPos() + hum->GetMoveDir());
-            if (hum->IsCollisionInMapService()) {
+            if (hum->CheckCollision()) {
                 hum->SetPos(old_pos);
                 if (i == 0) {
                     hum->FindPathInMapService();
diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index e876b9e..ba578f1 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -340,13 +340,6 @@ enum ObstacleType_e
     kObstacleOilBucket = 9,
 };
 
-enum OptResult
-{
-    kOptPass = 0,
-    kOptContinue = 1,
-    kOptBreak = 2
-};
-
 enum BulletHit_e
 {
      kBulletHitPass = 1,
diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index adb21be..d655f01 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -2075,3 +2075,58 @@ bool Creature::ReceiveExplosionDmg(Explosion* explosion)
 {
     return true;
 }
+
+bool Creature::CheckCollision()
+{
+    Global::last_collider = nullptr;
+    if (room->OverBorder(GetPos(), GetRadius())){
+        return true;
+    }
+    if (HasBuffEffect(kBET_ThroughWall) ||
+        HasBuffEffect(kBET_Fly)) {
+        return false;
+    }
+
+    std::set<ColliderComponent*> colliders;
+    room->map_service->GetColliders(room, GetX(), GetY(), colliders);
+
+    AabbCollider aabb_box;
+    GetAabbBox(aabb_box);
+    for (ColliderComponent* collider : colliders) {
+        if (last_collision_door_ != collider->owner) {
+            switch (collider->owner->GetEntityType()) {
+            case ET_Obstacle:
+                {
+                    Obstacle* obstacle = (Obstacle*)collider->owner;
+                    if (!obstacle->CanThroughable(this)) {
+                        if (
+                            (collider->type == CT_Aabb && aabb_box.Intersect(collider)) ||
+                            (collider->type == CT_Circle && self_collider_->Intersect(collider))
+                            ) {
+                            if (obstacle->OnCollisionTrigger(this, collider) == 1) {
+                                return true;
+                            }
+                        }
+                    }
+                }
+                break;
+            case ET_Building:
+                {
+                    if (
+                        (collider->type == CT_Aabb && aabb_box.Intersect(collider)) ||
+                        (collider->type == CT_Circle && self_collider_->Intersect(collider))
+                        ) {
+                        Global::last_collider = collider;
+                        return true;
+                    }
+                }
+                break;
+            default:
+                {
+                }
+                break;
+            }
+        }
+    }
+    return false;
+}
diff --git a/server/gameserver/creature.h b/server/gameserver/creature.h
index 9733280..16dd2cf 100644
--- a/server/gameserver/creature.h
+++ b/server/gameserver/creature.h
@@ -193,6 +193,12 @@ class Creature : public MoveableEntity
     void SetInfiniteBulletMode();
     void FindLocation();
     void FindLocationWithTarget(Entity* target);
+    Entity* GetLastCollisionDoor() { return last_collision_door_; }
+    void SetLastCollisionDoor(Entity* door) { last_collision_door_ = door; }
+    bool CheckCollision();
+
+protected:
+
 
 private:
 
@@ -220,6 +226,8 @@ protected:
     int action_target_id = 0;
 
     long long cell_flags_ = 0;
+    CircleCollider* self_collider_ = nullptr;
+    Entity* last_collision_door_ = nullptr;
 
 private:
     CreatureWeakPtr weak_ptr_;
diff --git a/server/gameserver/hero.cc b/server/gameserver/hero.cc
index 0846879..3ca1a27 100644
--- a/server/gameserver/hero.cc
+++ b/server/gameserver/hero.cc
@@ -122,7 +122,7 @@ void Hero::InternalUpdateMove(float speed)
     a8::Vec2 new_pos = GetPos() + GetMoveDir() * speed;
 
     SetPos(new_pos);
-    if (!IsCollisionInMapService()) {
+    if (!CheckCollision()) {
         room->grid_service->MoveCreature(this);
     } else {
         if (on_move_collision && !on_move_collision()) {
@@ -131,94 +131,6 @@ void Hero::InternalUpdateMove(float speed)
     }
 }
 
-bool Hero::IsCollisionInMapService()
-{
-    if (room->OverBorder(GetPos(), meta->i->radius())){
-        return true;
-    }
-    if (HasBuffEffect(kBET_ThroughWall)) {
-        return false;
-    }
-
-    std::set<ColliderComponent*> colliders;
-    room->map_service->GetColliders(room, GetX(), GetY(), colliders);
-
-    AabbCollider aabb_box;
-    GetAabbBox(aabb_box);
-    for (ColliderComponent* collider : colliders) {
-        switch (collider->owner->GetEntityType()) {
-        case ET_Obstacle:
-            {
-                Obstacle* obstacle = (Obstacle*)collider->owner;
-                if (!obstacle->IsDead(room) &&
-                    (
-                     (collider->type == CT_Aabb && aabb_box.Intersect((ColliderComponent*)collider)) ||
-                     (collider->type == CT_Circle && self_collider_->Intersect((ColliderComponent*)collider))
-                     ) &&
-                    !obstacle->CanThroughable(this)) {
-                    if (last_collision_door_ != collider->owner) {
-                        OptResult opt_result = kOptPass;
-                        obstacle->OnCollisionTrigger(this, collider, opt_result);
-                        if (opt_result == kOptContinue) {
-                            continue;
-                        } else if (opt_result == kOptBreak) {
-                            return true;
-                        }
-                        if (!obstacle->IsDead(room) &&
-                            #if 0
-                            obstacle->Attackable(this) &&
-                            #endif
-                            obstacle->meta->i->drop() != 0 &&
-                            obstacle->IsTouchInteraction() &&
-                            room->GetGasData().gas_mode != GasInactive &&
-                            (!obstacle->IsTerminatorAirDropBox(room))
-                            ) {
-                            obstacle->Die(room);
-                            if (obstacle->IsDead(room)) {
-                                #if 0
-                                DropItems(obstacle);
-                                #endif
-                            }
-                            obstacle->BroadcastFullState(room);
-                            if (obstacle->IsTerminatorAirDropBox(room) &&
-                                !HasBuffEffect(kBET_Terminator)) {
-                                MetaData::Buff* buff_meta = MetaMgr::Instance()->GetBuff(TERMINATOR_BUFF_ID);
-                                if (buff_meta) {
-                                    #if 0
-                                    AddBuff(this, buff_meta, 1);
-                                    #endif
-                                }
-                            }
-                        } else {
-                            Global::last_collider = collider;
-                            return true;
-                        }
-                    }
-                }
-            }
-            break;
-        case ET_Building:
-            {
-                if (
-                    (
-                     (collider->type == CT_Aabb && aabb_box.Intersect((ColliderComponent*)collider)) ||
-                     (collider->type == CT_Circle && self_collider_->Intersect((ColliderComponent*)collider))
-                     )
-                    ) {
-                    if (last_collision_door_ != collider->owner) {
-                        Global::last_collider = collider;
-                        return true;
-                    }
-                }
-            }
-            break;
-        default:
-            break;
-        }
-    }
-    return false;
-}
-
 void Hero::RecalcSelfCollider()
 {
     if (!self_collider_) {
diff --git a/server/gameserver/hero.h b/server/gameserver/hero.h
index 80fddb2..cd58faa 100644
--- a/server/gameserver/hero.h
+++ b/server/gameserver/hero.h
@@ -43,14 +43,11 @@ public:
 protected:
     virtual void _UpdateMove(int speed) override;
     void InternalUpdateMove(float speed);
-    bool IsCollisionInMapService();
     virtual void RecalcSelfCollider() override;
     void BeKill(int killer_id, const std::string& killer_name, int weapon_id);
 
 private:
     bool later_removed_ = false;
-    CircleCollider* self_collider_ = nullptr;
-    Entity* last_collision_door_ = nullptr;
     bool detached_ = false;
 
     friend class HeroAI;
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 867feeb..a23af89 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -489,67 +489,6 @@ void Human::RecalcSelfCollider()
     }
 }
 
-bool Human::IsCollisionInMapService()
-{
-    Global::last_collider = nullptr;
-    if (room->OverBorder(GetPos(), meta->i->radius())){
-        return true;
-    }
-    if (HasBuffEffect(kBET_ThroughWall) ||
-        HasBuffEffect(kBET_Fly)) {
-        return false;
-    }
-
-    std::set<ColliderComponent*> colliders;
-    room->map_service->GetColliders(room, GetX(), GetY(), colliders);
-
-    AabbCollider aabb_box;
-    GetAabbBox(aabb_box);
-    for (ColliderComponent* collider : colliders) {
-        switch (collider->owner->GetEntityType()) {
-        case ET_Obstacle:
-            {
-                Obstacle* obstacle = (Obstacle*)collider->owner;
-                if (!obstacle->CanThroughable(this) &&
-                    (
-                     (collider->type == CT_Aabb && aabb_box.Intersect(collider)) ||
-                     (collider->type == CT_Circle && self_collider_->Intersect(collider))
-                     )
-                    ) {
-                    if (last_collision_door_ != collider->owner) {
-                        OptResult opt_result = kOptPass;
-                        obstacle->OnCollisionTrigger(this, collider, opt_result);
-                        if (opt_result == kOptContinue) {
-                            continue;
-                        } else if (opt_result == kOptBreak) {
-                            return true;
-                        }
-                    }
-                }
-            }
-            break;
-        case ET_Building:
-            {
-                if (
-                     (collider->type == CT_Aabb && aabb_box.Intersect(collider)) ||
-                     (collider->type == CT_Circle && self_collider_->Intersect(collider))
-                    ) {
-                    if (last_collision_door_ != collider->owner) {
-                        Global::last_collider = collider;
-                        return true;
-                    }
-                }
-            }
-            break;
-        default:
-            {
-            }
-            break;
-        }
-    }
-    return false;
-}
-
 void Human::FindPathInMapService()
 {
     a8::Vec2 old_pos = GetPos();
@@ -580,7 +519,7 @@ void Human::FindPathInMapService()
                     }
                     float distance = ((CircleCollider*)last_collider)->rad + meta->i->radius();
                     SetPos(last_collider->owner->GetPos() + extend_dir * (distance + 1));
-                    if (IsCollisionInMapService()) {
+                    if (CheckCollision()) {
                         SetPos(old_pos);
                     }
                 }
@@ -597,34 +536,34 @@ void Human::FindPathInMapService()
         if (std::abs(up_dot) <= 0.001f) { //相互垂直
             //向上
             SetPos(old_pos + a8::Vec2::UP);
-            if (!IsCollisionInMapService()) {
+            if (!CheckCollision()) {
                 return;
             } else {
                 //向下
                 SetPos(old_pos + a8::Vec2::DOWN);
-                if (!IsCollisionInMapService()) {
+                if (!CheckCollision()) {
                     return;
                 }
             }
         } else if (up_dot > 0.001f) { //基本相同
             SetPos(old_pos + (at_left_side ? a8::Vec2::LEFT : a8::Vec2::RIGHT));
-            if (!IsCollisionInMapService()) {
+            if (!CheckCollision()) {
                 return;
             } else {
                 //向上
                 SetPos(old_pos + a8::Vec2::UP);
-                if (!IsCollisionInMapService()) {
+                if (!CheckCollision()) {
                     return;
                 }
             }
         } else if (up_dot < 0.001f) { //基本相反
             SetPos(old_pos + (at_left_side ? a8::Vec2::LEFT : a8::Vec2::RIGHT));
-            if (!IsCollisionInMapService()) {
+            if (!CheckCollision()) {
                 return;
             } else {
                 //向下
                 SetPos(old_pos + a8::Vec2::DOWN);
-                if (!IsCollisionInMapService()) {
+                if (!CheckCollision()) {
                     return;
                 }
             }
@@ -1838,7 +1777,7 @@ void Human::_InternalUpdateMove(float speed)
 
     #if 1
     SetPos(old_pos + a8::Vec2(nx, ny));
-    if (!IsCollisionInMapService()) {
+    if (!CheckCollision()) {
         room->grid_service->MoveCreature(this);
         return;
     } else {
@@ -1853,7 +1792,7 @@ void Human::_InternalUpdateMove(float speed)
                 a8::Vec2 new_dir = tmp_dir * rate;
                 SetPos(GetPos() + new_dir);
             }
-            if (!IsCollisionInMapService()) {
+            if (!CheckCollision()) {
                 room->grid_service->MoveCreature(this);
                 return;
             }
@@ -1866,7 +1805,7 @@ void Human::_InternalUpdateMove(float speed)
     }
 
     SetPos(old_pos + a8::Vec2(nx, 0));
-    if (IsCollisionInMapService()) {
+    if (CheckCollision()) {
         if (a8::HasBitFlag(status, CS_Collisioning)) {
             SetPos(old_pos);
             return;
@@ -1879,7 +1818,7 @@ void Human::_InternalUpdateMove(float speed)
     }
 
     SetPos(old_pos + a8::Vec2(nx, ny));
-    if (IsCollisionInMapService()) {
+    if (CheckCollision()) {
         if (a8::HasBitFlag(status, CS_Collisioning)) {
             SetPos(old_pos);
             return;
@@ -3232,7 +3171,7 @@ void Human::OnLand()
                  hum->refresh_view_timer_ = nullptr;
              });
     }
-    if (IsCollisionInMapService()) {
+    if (CheckCollision()) {
         a8::Vec2 old_pos = GetPos();
         std::vector<a8::Vec2> dirs;
         {
@@ -3244,7 +3183,7 @@ void Human::OnLand()
         for (int i = 0; i < 10000000; i += 10) {
             for (const a8::Vec2& dir : dirs) {
                 SetPos(old_pos + dir * i);
-                if (!IsCollisionInMapService()) {
+                if (!CheckCollision()) {
                     room->grid_service->MoveCreature(this);
                     return;
                 }
diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index 2311c02..7e5ae76 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -147,7 +147,6 @@ class Human : public Creature
     void FillMFTeamData(cs::MFTeamData* team_data, bool is_game_over);
     void CarShot(const a8::Vec2& target_dir);
     virtual void RecalcSelfCollider() override;
-    bool IsCollisionInMapService();
     void FindPathInMapService();
     void BeKill(int killer_id, const std::string& killer_name, int weapon_id);
     virtual void DecHP(float dec_hp, int killer_id, const std::string& killer_name, int weapon_id) override;
@@ -219,8 +218,6 @@ class Human : public Creature
     virtual void DropItems(Obstacle* obstacle) override;
     void OnEnable();
     void OnDisable();
-    Entity* GetLastCollisionDoor() { return last_collision_door_; }
-    void SetLastCollisionDoor(Entity* door) { last_collision_door_ = door; }
     ObjectSyncFlags* GetObjectSyncFlags(int obj_uniid);
     bool HasSpecMove();
     void _UpdateSpecMove();
@@ -328,7 +325,6 @@ protected:
     std::vector<Skin> skins;
 
 private:
-    CircleCollider* self_collider_ = nullptr;
     long long last_sync_gas_frameno = 0;
     std::map<int, int> items_;
     std::set<int> battling_items_;
@@ -341,8 +337,6 @@ private:
     bool sent_battlereport_ = false;
     bool sent_game_end_ = false;
 
-
-    Entity* last_collision_door_ = nullptr;
     long long jump_frameno_ = 0;
     float old_sync_speed = 0;
 
diff --git a/server/gameserver/obstacle.cc b/server/gameserver/obstacle.cc
index e6a0e1f..05ea2fa 100644
--- a/server/gameserver/obstacle.cc
+++ b/server/gameserver/obstacle.cc
@@ -667,8 +667,10 @@ bool Obstacle::DoInteraction(Human* sender)
     return false;
 }
 
-void Obstacle::OnCollisionTrigger(Creature* c, ColliderComponent* collider, OptResult& opt_result)
+int Obstacle::OnCollisionTrigger(Creature* c, ColliderComponent* collider)
 {
+    return 0;
+    #if 0
     opt_result = kOptPass;
     switch (meta->i->thing_type()) {
     case kObstacleSpring:
@@ -700,6 +702,7 @@ void Obstacle::OnCollisionTrigger(Creature* c, ColliderComponent* collider, OptR
         }
         break;
     }
+    #endif
     #if 0
     Global::last_collider = collider;
     #endif
diff --git a/server/gameserver/obstacle.h b/server/gameserver/obstacle.h
index 6e01fa5..69bb897 100644
--- a/server/gameserver/obstacle.h
+++ b/server/gameserver/obstacle.h
@@ -48,7 +48,7 @@ class Obstacle : public Entity
     virtual bool CanThroughable(Creature* c);
     virtual bool CanThroughable(Bullet* bullet);
     virtual bool DoInteraction(Human* sender);
-    virtual void OnCollisionTrigger(Creature* c, ColliderComponent* collider, OptResult& opt_result);
+    virtual int OnCollisionTrigger(Creature* c, ColliderComponent* collider);
     virtual bool CanSeeMe(Human* hum);
     virtual bool ReceiveExplosionDmg(Explosion* explosion) override;
     void SetDoorInfo(Building* building, int door_id_x);
@@ -102,4 +102,3 @@ protected:
 
     friend class EntityFactory;
 };
-