diff --git a/server/gameserver/building.cc b/server/gameserver/building.cc
index ec8db6c..751af79 100644
--- a/server/gameserver/building.cc
+++ b/server/gameserver/building.cc
@@ -33,7 +33,7 @@ void Building::RecalcSelfCollider()
                                   obj.y() - obj.height()/2.0 - meta->i->tileheight()/2.0);
         collider->_max = Vector2D(obj.x() + obj.width()/2.0 - meta->i->tilewidth()/2.0,
                                   obj.y() + obj.height()/2.0 - meta->i->tileheight()/2.0);
-        colliders.push_back(collider);
+        AddCollider(collider);
     }
 }
 
diff --git a/server/gameserver/bullet.cc b/server/gameserver/bullet.cc
index 0a4d909..1a3bbeb 100644
--- a/server/gameserver/bullet.cc
+++ b/server/gameserver/bullet.cc
@@ -44,7 +44,7 @@ void Bullet::RecalcSelfCollider()
     if (!self_collider_) {
         self_collider_ = new CircleCollider();
         self_collider_->owner = this;
-        colliders.push_back(self_collider_);
+        AddCollider(self_collider_);
     }
     self_collider_->pos = Vector2D();
     self_collider_->rad = gun_meta->i->bullet_rad();
@@ -99,7 +99,6 @@ void Bullet::OnHit(std::set<Entity*>& objects)
                             obstacle->meta->i->damage() > 0.01f) {
                             obstacle->Explosion(this);
                         }
-                        obstacle->ClearColliders();
                         room->ScatterDrop(obstacle->pos, obstacle->meta->i->drop());
                     }
                     obstacle->BroadcastFullState();
diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index adbc317..17ade5a 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -165,3 +165,5 @@ const int FIGHTING_MODE_BULLET_NUM = 10000 * 10000;
 
 const int MAX_NODE_ID = 8;
 const int MAX_INSTANCE_ID = 500;
+
+const int WALK_ZONE_WIDTH = 100;
diff --git a/server/gameserver/entity.cc b/server/gameserver/entity.cc
index 0a1b301..6e3d339 100644
--- a/server/gameserver/entity.cc
+++ b/server/gameserver/entity.cc
@@ -46,6 +46,9 @@ void Entity::GetCircleBox(CircleCollider& circle_box)
 bool Entity::TestCollision(Entity* b)
 {
     App::Instance()->perf.test_times++;
+    if (b->dead) {
+        return false;
+    }
     for (auto& a_collider : colliders) {
         for (auto& b_collider : b->colliders) {
             if (a_collider->Intersect(b_collider)) {
@@ -156,3 +159,8 @@ void Entity::BroadcastDeleteState()
         }
     }
 }
+
+void Entity::AddCollider(ColliderComponent* collider)
+{
+    colliders.push_back(collider);
+}
diff --git a/server/gameserver/entity.h b/server/gameserver/entity.h
index c17de48..2f521a5 100644
--- a/server/gameserver/entity.h
+++ b/server/gameserver/entity.h
@@ -50,9 +50,10 @@ class Entity
     Room* room = nullptr;
     Vector2D pos;
     int updated_times = 0;
-    std::list<ColliderComponent*> colliders;
     bool deleted = false;
     a8::XTimerAttacher xtimer_attacher;
+    bool dead = false;
+    long long dead_frameno = 0;
 
     int grid_id = 0;
     std::set<GridCell*> grid_list;
@@ -69,9 +70,13 @@ class Entity
     virtual void GetAabbBox(AabbCollider& aabb_box);
     virtual void GetCircleBox(CircleCollider& circle_box);
     bool TestCollision(Entity* b);
-    void ClearColliders();
     void FindLocationWithTarget(Entity* target);
     void BroadcastFullState();
     void BroadcastDeleteState();
+    void AddCollider(ColliderComponent* collider);
 
+private:
+    std::list<ColliderComponent*> colliders;
+
+    void ClearColliders();
 };
diff --git a/server/gameserver/hero.cc b/server/gameserver/hero.cc
index eca2f77..ec1a32f 100644
--- a/server/gameserver/hero.cc
+++ b/server/gameserver/hero.cc
@@ -25,7 +25,7 @@ void Hero::RecalcSelfCollider()
     if (!self_collider_) {
         self_collider_ = new CircleCollider();
         self_collider_->owner = this;
-        colliders.push_back(self_collider_);
+        AddCollider(self_collider_);
     }
     self_collider_->pos = Vector2D();
     self_collider_->rad = master->GetRadius();
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index f486305..db012de 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -47,12 +47,19 @@ Human::Human():Entity()
         inventory_[IS_12GAUGE] = FIGHTING_MODE_BULLET_NUM;
         inventory_[IS_RPG] = FIGHTING_MODE_BULLET_NUM;
     }
+    walk_zone = new AabbCollider();
+    walk_zone->_min.x = -(WALK_ZONE_WIDTH / 2.0f);
+    walk_zone->_min.y = -(WALK_ZONE_WIDTH / 2.0f);
+    walk_zone->_max.x = WALK_ZONE_WIDTH / 2.0f;
+    walk_zone->_max.y = WALK_ZONE_WIDTH / 2.0f;
 }
 
 Human::~Human()
 {
     delete movement ;
     movement = nullptr;
+    delete walk_zone;
+    walk_zone = nullptr;
 }
 
 void Human::Initialize()
@@ -279,7 +286,7 @@ void Human::RecalcSelfCollider()
     if (!self_collider_) {
         self_collider_ = new CircleCollider();
         self_collider_->owner = this;
-        colliders.push_back(self_collider_);
+        AddCollider(self_collider_);
     }
     self_collider_->pos = Vector2D();
     self_collider_->rad = meta->i->radius();
@@ -327,6 +334,43 @@ bool Human::IsCollision()
     return !objects.empty();
 }
 
+bool Human::IsCollisionInWalkZone()
+{
+    if (room->OverBorder(pos, meta->i->radius())){
+        return true;
+    }
+
+    if (a8::HasBitFlag(status, HS_Jump)) {
+        return false;
+    }
+
+    if (last_collider && !last_collider->owner->dead) {
+        CircleCollider circle_box;
+        GetCircleBox(circle_box);
+        if (circle_box.Intersect(last_collider)) {
+            if (last_collision_door != last_collider->owner) {
+                return true;
+            }
+        }
+    }
+
+    for (Entity* entity : seen_objects) {
+        switch (entity->entity_type) {
+        case ET_Obstacle:
+        case ET_Building:
+            {
+                if (!entity->dead && TestCollision(entity)) {
+                    if (last_collision_door != entity) {
+                        return true;
+                    }
+                }
+            }
+            break;
+        }
+    }
+    return false;
+}
+
 void Human::FindPath()
 {
     Vector2D old_pos = pos;
@@ -372,6 +416,51 @@ void Human::FindPath()
     pos = old_pos;
 }
 
+void Human::FindPathInWalkZone()
+{
+    Vector2D old_pos = pos;
+    {
+        float up_dot = Vector2D::UP.Dot(move_dir);
+        bool at_left_side = Vector2D::LEFT.Dot(move_dir) > 0.0001f;
+        if (std::abs(up_dot) <= 0.001f) { //相互垂直
+            //向上
+            pos = old_pos + Vector2D::UP;
+            if (!IsCollisionInWalkZone()) {
+                return;
+            } else {
+                //向下
+                pos = old_pos + Vector2D::DOWN;
+                if (!IsCollisionInWalkZone()) {
+                    return;
+                }
+            }
+        } else if (up_dot > 0.001f) { //基本相同
+            pos = old_pos + (at_left_side ? Vector2D::LEFT : Vector2D::RIGHT);
+            if (!IsCollisionInWalkZone()) {
+                return;
+            } else {
+                //向上
+                pos = old_pos + Vector2D::UP;
+                if (!IsCollisionInWalkZone()) {
+                    return;
+                }
+            }
+        } else if (up_dot < 0.001f) { //基本相反
+            pos = old_pos + (at_left_side ? Vector2D::LEFT : Vector2D::RIGHT);
+            if (!IsCollisionInWalkZone()) {
+                return;
+            } else {
+                //向下
+                pos = old_pos + Vector2D::DOWN;
+                if (!IsCollisionInWalkZone()) {
+                    return;
+                }
+            }
+        }
+    }
+    pos = old_pos;
+}
+
 float Human::GetRadius()
 {
     return meta->i->radius();
@@ -1719,6 +1808,104 @@ int Human::GetSkinConfigLv(int skin_id)
     return itr != skin_configs.end() ? itr->second : 0;
 }
 
+void Human::GenerateWalkZone()
+{
+    in_walk_zone = true;
+    walk_zone_center = pos;
+    seen_colliders.clear();
+    seen_objects.clear();
+    last_collider = nullptr;
+    for (auto& grid : grid_list) {
+        for (Entity* entity : grid->entity_list) {
+            switch (entity->entity_type) {
+            case ET_Obstacle:
+            case ET_Building:
+                {
+                    if (
+                        (last_collision_door == nullptr || last_collision_door != entity)
+                        ){
+                        AabbCollider aabb_box;
+                        entity->GetAabbBox(aabb_box);
+                        if (IntersectAabbAabb(walk_zone_center + walk_zone->_min,
+                                              walk_zone_center + walk_zone->_max,
+                                              aabb_box.owner->pos + aabb_box._min,
+                                              aabb_box.owner->pos + aabb_box._max)
+                            ) {
+                            seen_objects.insert(entity);
+                        }
+                    }
+                }
+                break;
+            default:
+                {
+                }
+                break;
+            }
+        }
+    }//end for
+}
+
+bool Human::InWalkZone()
+{
+    float delta = 10.0f;
+    if (pos.x - meta->i->radius() < walk_zone_center.x + walk_zone->_min.x - delta) {
+        return false;
+    }
+    if (pos.x + meta->i->radius() > walk_zone_center.x + walk_zone->_max.x - delta) {
+        return false;
+    }
+    if (pos.y - meta->i->radius() < walk_zone_center.y + walk_zone->_min.y - delta) {
+        return false;
+    }
+    if (pos.y + meta->i->radius() > walk_zone_center.y + walk_zone->_max.y - delta) {
+        return false;
+    }
+    return false;
+}
+
+void Human::ClearWalkZone()
+{
+    in_walk_zone = false;
+}
+
+void Human::UpdateMoveInWalkZone(int speed)
+{
+    for (int i = 0; i < speed; ++i) {
+        Vector2D old_pos = pos;
+        pos = pos + move_dir;
+        if (InWalkZone()) {
+            if (IsCollisionInWalkZone()) {
+                pos = old_pos;
+                FindPathInWalkZone();
+                if (rand() % 3 == 0) {
+                    i += 1;
+                }
+            }
+        } else {
+            ClearWalkZone();
+            pos = old_pos;
+            UpdateMoveInMap(speed - i);
+            return;
+        }
+        room->grid_service.MoveHuman(this);
+    }
+}
+
+void Human::UpdateMoveInMap(int speed)
+{
+    for (int i = 0; i < speed; ++i) {
+        Vector2D old_pos = pos;
+        pos = pos + move_dir;
+        if (IsCollision()) {
+            pos = old_pos;
+            GenerateWalkZone();
+            UpdateMoveInWalkZone(speed - i);
+            return;
+        }
+        room->grid_service.MoveHuman(this);
+    }
+}
+
 void Human::ClearFrameData()
 {
     if (!new_objects.empty()) {
diff --git a/server/gameserver/human.h b/server/gameserver/human.h
index c684a8f..46089c8 100644
--- a/server/gameserver/human.h
+++ b/server/gameserver/human.h
@@ -29,6 +29,7 @@ enum HumanStatus
 
 struct xtimer_list;
 class CircleCollider;
+class AabbCollider;
 class Obstacle;
 class MovementComponent;
 class Human : public Entity
@@ -123,7 +124,9 @@ class Human : public Entity
     void Shot(Vector2D& target_dir);
     void RecalcSelfCollider();
     bool IsCollision();
+    bool IsCollisionInWalkZone();
     void FindPath();
+    void FindPathInWalkZone();
     float GetRadius();
     float GetMaxHP();
     void UpdatePoisoning();
@@ -186,6 +189,13 @@ class Human : public Entity
     int GetWeaponConfigLv(int weapon_id);
     int GetSkinConfigLv(int skin_id);
 
+protected:
+    void GenerateWalkZone();
+    bool InWalkZone();
+    void ClearWalkZone();
+    void UpdateMoveInWalkZone(int speed);
+    void UpdateMoveInMap(int speed);
+
 private:
     void ClearFrameData();
     void GenBattleReportData(a8::MutableXObject* params);
@@ -222,6 +232,13 @@ protected:
     bool follow_synced_active_player = false;
     MovementComponent* movement = nullptr;
 
+    bool in_walk_zone = false;
+    Vector2D walk_zone_center;
+    AabbCollider* walk_zone = nullptr;
+    std::set<ColliderComponent*> seen_colliders;
+    std::set<Entity*> seen_objects;
+    ColliderComponent* last_collider = nullptr;
+
 private:
     CircleCollider* self_collider_ = nullptr;
     long long last_sync_gas_frameno = 0;
diff --git a/server/gameserver/obstacle.cc b/server/gameserver/obstacle.cc
index 3b9cae6..cb0e896 100644
--- a/server/gameserver/obstacle.cc
+++ b/server/gameserver/obstacle.cc
@@ -33,7 +33,7 @@ void Obstacle::RecalcSelfCollider()
         if (!self_collider2_) {
             self_collider2_ = new AabbCollider();
             self_collider2_->owner = this;
-            colliders.push_back(self_collider2_);
+            AddCollider(self_collider2_);
         }
         if (door_state == DoorStateClose) {
             self_collider2_->_min = Vector2D(0.0f - door_state0->width() / 2.0f,
@@ -51,7 +51,7 @@ void Obstacle::RecalcSelfCollider()
                 if (!self_collider_) {
                     self_collider_ = new CircleCollider();
                     self_collider_->owner = this;
-                    colliders.push_back(self_collider_);
+                    AddCollider(self_collider_);
                 }
                 self_collider_->pos = Vector2D();
                 self_collider_->rad = meta->i->height() / 2.0;
@@ -62,7 +62,7 @@ void Obstacle::RecalcSelfCollider()
                 if (!self_collider2_) {
                     self_collider2_ = new AabbCollider();
                     self_collider2_->owner = this;
-                    colliders.push_back(self_collider2_);
+                    AddCollider(self_collider2_);
                 }
                 self_collider2_->_min = Vector2D(meta->i->width() / -2.0f, meta->i->height() / -2.0f);
                 self_collider2_->_max = Vector2D(meta->i->width() / 2.0f, meta->i->height() / 2.0f);
@@ -216,7 +216,6 @@ void Obstacle::Explosion(Bullet* bullet)
                                 obstacle->dead = obstacle->health <= 0.01f;
                                 obstacle->dead_frameno = room->frame_no;
                                 if (obstacle->dead) {
-                                    obstacle->ClearColliders();
                                     room->ScatterDrop(obstacle->pos, obstacle->meta->i->drop());
                                 }
                                 obstacle->BroadcastFullState();
diff --git a/server/gameserver/obstacle.h b/server/gameserver/obstacle.h
index c7e234f..4d8a47a 100644
--- a/server/gameserver/obstacle.h
+++ b/server/gameserver/obstacle.h
@@ -25,8 +25,6 @@ class Obstacle : public Entity
  public:
     MetaData::MapThing* meta = nullptr;
     float health = 0.0f;
-    bool dead = false;
-    long long dead_frameno = 0;
 
     bool is_door = false;
     int door_id = 0;
diff --git a/server/gameserver/player.cc b/server/gameserver/player.cc
index 622cad8..3eff93c 100644
--- a/server/gameserver/player.cc
+++ b/server/gameserver/player.cc
@@ -13,6 +13,7 @@
 #include "loot.h"
 #include "app.h"
 #include "movement.h"
+#include "collider.h"
 
 Player::Player():Human()
 {
@@ -121,6 +122,7 @@ void Player::UpdateMove()
 #endif
         return;
     }
+#if 0
     int speed = std::max(1, (int)GetSpeed());
 #ifdef RAY_DETECTION
     for (int i = 0; i < speed; ++i) {
@@ -162,6 +164,12 @@ void Player::UpdateMove()
         room->grid_service.MoveHuman(this);
     }
 #endif
+#endif
+    if (in_walk_zone) {
+        UpdateMoveInWalkZone(std::max(1, (int)GetSpeed()));
+    } else {
+        UpdateMoveInMap(std::max(1, (int)GetSpeed()));
+    }
     if (last_collision_door && !TestCollision(last_collision_door)) {
         last_collision_door = nullptr;
     }