diff --git a/server/gameserver/mapcollider.cc b/server/gameserver/mapcollider.cc
index bb71e25f..871fb981 100644
--- a/server/gameserver/mapcollider.cc
+++ b/server/gameserver/mapcollider.cc
@@ -48,6 +48,7 @@ namespace mc
 
     void BoxCollider::Read(std::shared_ptr<a8::XObject> xobj)
     {
+        type = kBoxCollider;
         Collider::Read(xobj);
         Vec3_Read(center, xobj->At("center"));
         Vec3_Read(size, xobj->At("size"));
@@ -55,6 +56,7 @@ namespace mc
 
     void MeshCollider::Read(std::shared_ptr<a8::XObject> xobj)
     {
+        type = kMeshCollider;
         Collider::Read(xobj);
         {
             auto verts_xobj = xobj->At("mesh")->At("vertices");
diff --git a/server/gameserver/mapcollider.h b/server/gameserver/mapcollider.h
index bdba98ba..efc91852 100644
--- a/server/gameserver/mapcollider.h
+++ b/server/gameserver/mapcollider.h
@@ -30,8 +30,10 @@ namespace mc
         glm::vec3 size = glm::vec3(0.0f, 0.0f, 0.0f);
     };
 
+    struct ColliderNode;
     struct Triangle
     {
+        ColliderNode* node = nullptr;
         glm::vec3 vert0 = glm::vec3(0.0f, 0.0f, 0.0f);
         glm::vec3 vert1 = glm::vec3(0.0f, 0.0f, 0.0f);
         glm::vec3 vert2 = glm::vec3(0.0f, 0.0f, 0.0f);
@@ -48,12 +50,11 @@ namespace mc
         void Read(std::shared_ptr<a8::XObject> xobj);
     };
 
-
     struct Mesh
     {
         std::vector<glm::vec3> vertices;
         std::vector<int> raw_triangles;
-        //std::vector<Triangle> triangles;
+        std::vector<Triangle> triangles;
         Bounds bounds;
     };
 
@@ -65,6 +66,7 @@ namespace mc
         bool is_trigger = false;
         Bounds bounds;
 
+        virtual ~Collider() {};
         virtual void Read(std::shared_ptr<a8::XObject> xobj);
     };
 
diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index 5e356129..eb72289b 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -832,8 +832,43 @@ void MapInstance::LoadHouse()
             }
         }
         {
+            things_.reserve(1024 * 10);
+            auto cb =
+                [this] (mc::ColliderNode* node)
+                {
+                    if (!node->colliders.empty()) {
+                        for (auto c : node->colliders) {
+                            if (c->type == mc::kMeshCollider) {
+                                mc::MeshCollider* mesh_collider = (mc::MeshCollider*)c;
+                                mesh_collider->mesh.triangles.reserve(mesh_collider->mesh.raw_triangles.size() / 3);
+                                for (int i = 0; i < mesh_collider->mesh.raw_triangles.size(); i += 3) {
+                                    auto& tri = a8::FastAppend(mesh_collider->mesh.triangles);
+                                    tri.node = node;
+                                    tri.vert0 = mesh_collider->mesh.vertices[i + 0];
+                                    tri.vert1 = mesh_collider->mesh.vertices[i + 1];
+                                    tri.vert2 = mesh_collider->mesh.vertices[i + 2];
+                                    tri.min_y = tri.vert0.y;
+                                    tri.max_y = tri.vert0.y;
+                                    for (int ii = 1; ii < 3; ++ii) {
+                                        float y = mesh_collider->mesh.vertices[i + ii].y;
+                                        if (y < tri.min_y) {
+                                            tri.min_y = y;
+                                        }
+                                        if (y > tri.max_y) {
+                                            tri.max_y = y;
+                                        }
+                                    }//end for ii
+                                    tri.min_y -= 1.0f;
+                                    tri.max_y += 1.0f;
+                                    map_service_->AddTriangle(&tri);
+                                }//end for i
+                            }//end if
+                        }//end forc
+                        things_.push_back(node);
+                    }
+                };
             for (auto& pair : GetMapMeta()->collider_info->GetNodes()) {
-
+                TraverseMapColliderNode(pair.second, cb);
             }
         }
     }
diff --git a/server/gameserver/mapservice.cc b/server/gameserver/mapservice.cc
index 9a2ef4b4..5443a004 100644
--- a/server/gameserver/mapservice.cc
+++ b/server/gameserver/mapservice.cc
@@ -76,6 +76,11 @@ bool MapService::CanAdd(const glm::vec3& pos, int rad)
     return true;
 }
 
+void MapService::AddTriangle(mc::Triangle* tri)
+{
+
+}
+
 int MapService::GetGridId(float world_x, float world_y)
 {
     int grid_id = (int)(world_x/cell_width_) + (int)(world_y/cell_width_) * map_width_;
diff --git a/server/gameserver/mapservice.h b/server/gameserver/mapservice.h
index 2d867ccf..8d8d292d 100644
--- a/server/gameserver/mapservice.h
+++ b/server/gameserver/mapservice.h
@@ -2,6 +2,11 @@
 
 class Human;
 
+namespace mc
+{
+    struct Triangle;
+}
+
 struct CellNode
 {
     list_head entry;
@@ -19,6 +24,7 @@ class MapService
     void UnInit();
 
     bool CanAdd(const glm::vec3& pos, int rad);
+    void AddTriangle(mc::Triangle* tri);
 
  private:
     int GetGridId(float world_x, float world_y);