diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index 0e9d0ea..0d80cce 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -105,6 +105,7 @@ enum InventorySlot_e
     IS_SHIELD_WALL = 22, //盾墙
     IS_SINGAL_GUN = 23, //信号枪
     IS_SHEN_BAO = 24, //肾上腺速
+    IS_OIL_BUCKET = 25, //汽油桶
 
     IS_MAX = 30,
     IS_END
diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index f5da7b4..1b21375 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -198,6 +198,10 @@ void MapInstance::CreateTerrain()
     for (auto idx : terrain->grass()) {
         grasses.insert(idx + 1);
     }
+    std::set<int> mountain_tops;
+    for (auto idx : terrain->mountain_top()) {
+        mountain_tops.insert(idx + 1);
+    }
 
     int mask = A8_DEFINE_RANGE_BIT(int, 0, 22);
     for (auto layer : *layers) {
@@ -235,6 +239,9 @@ void MapInstance::CreateTerrain()
                     } else if (grasses.find(grid_val) != grasses.end()) {
                         a8::SetBitFlag(collider_tag, kColliderTag_Grass);
                         assert(collider_tag > 0);
+                    } else if (mountain_tops.find(grid_val) != mountain_tops.end()) {
+                        a8::SetBitFlag(collider_tag, kColliderTag_MountainTop);
+                        assert(collider_tag > 0);
                     }
                     if (collider_tag != 0) {
                         assert(w < 300 && h < 300);
diff --git a/server/gameserver/metamgr.cc b/server/gameserver/metamgr.cc
index 4ba55b6..88b184a 100755
--- a/server/gameserver/metamgr.cc
+++ b/server/gameserver/metamgr.cc
@@ -945,45 +945,3 @@ std::string MetaMgr::GetText(const std::string& textid, const std::string& def_t
     auto itr = loader_->text_hash.find(textid);
     return itr != loader_->text_hash.end() ? itr->second : def_text;
 }
-
-int MetaMgr::GetSpecMapAreaBuffId(int tag)
-{
-    switch (tag) {
-    case kColliderTag_Grass:
-        return kInGrassBuffId;
-    case kColliderTag_Water:
-        return kInWaterBuffId;
-    case kColliderTag_Ice:
-        return kInIceBuffId;
-    default:
-        return 0;
-    }
-}
-
-int MetaMgr::GetSpecMapAreaEnterTime(int tag)
-{
-    switch (tag) {
-    case kColliderTag_Grass:
-        return grass_invisible_time;
-    case kColliderTag_Water:
-        return water_invisible_time;
-    case kColliderTag_Ice:
-        return ice_invisible_time;
-    default:
-        return 0;
-    }
-}
-
-int MetaMgr::GetSpecMapAreaLeaveTime(int tag)
-{
-    switch (tag) {
-    case kColliderTag_Grass:
-        return grass_show_time;
-    case kColliderTag_Water:
-        return water_show_time;
-    case kColliderTag_Ice:
-        return ice_show_time;
-    default:
-        return 0;
-    }
-}
diff --git a/server/gameserver/metamgr.h b/server/gameserver/metamgr.h
index 80383ec..d4a12b2 100755
--- a/server/gameserver/metamgr.h
+++ b/server/gameserver/metamgr.h
@@ -56,9 +56,6 @@ class MetaMgr : public a8::Singleton<MetaMgr>
     MetaData::Robot* RandRobot(std::set<int>& refreshed_robot_set);
     MetaData::AI* GetAI(int ai_level, int ai_mode);
     std::string GetText(const std::string& textid, const std::string& def_text="");
-    int GetSpecMapAreaBuffId(int tag);
-    int GetSpecMapAreaEnterTime(int tag);
-    int GetSpecMapAreaLeaveTime(int tag);
 
     int gas_inactive_time = 10;
     int newbie_gas_inactive_time = 5;
diff --git a/server/gameserver/obstacle.cc b/server/gameserver/obstacle.cc
index 21b1371..0bc6b99 100644
--- a/server/gameserver/obstacle.cc
+++ b/server/gameserver/obstacle.cc
@@ -88,6 +88,11 @@ void Obstacle::RecalcSelfCollider()
                 permanent_map_service->AddCollider(self_collider2_);
             }
             break;
+        default:
+            {
+                abort();
+            }
+            break;
         }
     }
     if (!self_collider_) {
@@ -101,6 +106,9 @@ void Obstacle::RecalcSelfCollider()
         collider->tag = collider_tag;
         collider->param1 = collider_param1;
         collider->param2 = collider_param2;
+        if (meta->i->attack_type() == 3) {
+            a8::SetBitFlag(collider->tag, kHalfWallTag);
+        }
     }
 }
 
@@ -474,7 +482,7 @@ bool Obstacle::Attackable()
 
 bool Obstacle::Throughable()
 {
-    return meta->i->attack_type() == 2;
+    return meta->i->attack_type() == 2 || meta->i->attack_type() == 3;
 }
 
 int Obstacle::GetTeamId(Room* room)