diff --git a/server/gameserver/mapservice.cc b/server/gameserver/mapservice.cc
index d31be70b..655805cf 100644
--- a/server/gameserver/mapservice.cc
+++ b/server/gameserver/mapservice.cc
@@ -165,37 +165,6 @@ void MapService::AddTriangle(mc::Triangle* tri)
                     glm::vec3 a[3 * 2];
                     a[0] = glm::vec3(0.0f, 0.0f, 0.0f);
 
-                    glm::vec2 bary_position;
-                    float distance;
-
-                    glm::vec3 v1;
-                    glm::vec3 v2;
-                    glm::vec3 orig = v1;
-                    glm::vec3 dir = v2 - v1;
-                    GlmHelper::Normalize(dir);
-                    float max_distance = GlmHelper::Norm(v2 - v1);
-                    for (int i = 0; i < 2; ++i){
-                        bool hit = glm::intersectRayTriangle
-                            (orig,
-                             dir,
-                             a[i * 3 + 0],
-                             a[i * 3 + 1],
-                             a[i * 3 + 2],
-                             bary_position,
-                             distance
-                             );
-                        if (hit && distance > 0.00001f) {
-                            if (distance < max_distance + 1) {
-                                found = true;
-                                int grid_id = x  + y * map_width_;
-                                list_head* head = &map_cells_[grid_id];
-                                CellNode* node = new CellNode();
-                                node->tri = tri;
-                                list_add_tail(&node->entry, head);
-                                break;
-                            }
-                        }
-                    }
                 }
 #if 0
                 if (dtOverlapPolyPoly2D(tri_verts, 3, aabb_verts, 4)) {
@@ -234,3 +203,34 @@ void MapService::GetGridList(int grid_id, list_head* grid_list[9], int& grid_cou
         }
     }
 }
+
+bool MapService::TriIntersect(const glm::vec3 t1[3], const glm::vec3 t2[3])
+{
+    glm::vec2 bary_position;
+    float distance;
+    for (int v = 0; v < 2; ++v) {
+        glm::vec3 v1;
+        glm::vec3 v2;
+        glm::vec3 orig = v1;
+        glm::vec3 dir = v2 - v1;
+        GlmHelper::Normalize(dir);
+        float max_distance = GlmHelper::Norm(v2 - v1);
+        for (int i = 0; i < 2; ++i){
+            bool hit = glm::intersectRayTriangle
+                (orig,
+                 dir,
+                 t2[0],
+                 t2[1],
+                 t2[2],
+                 bary_position,
+                 distance
+                 );
+            if (hit && distance > 0.00001f) {
+                if (distance < max_distance + 1) {
+                    return true;
+                }
+            }
+        }
+    }
+    return false;
+}
diff --git a/server/gameserver/mapservice.h b/server/gameserver/mapservice.h
index efbcd953..065a1d59 100644
--- a/server/gameserver/mapservice.h
+++ b/server/gameserver/mapservice.h
@@ -27,6 +27,7 @@ class MapService
     void AddTriangle(mc::Triangle* tri);
     int GetGridId(float world_x, float world_y);
     void GetGridList(int grid_id, list_head* grid_list[9], int& grid_count);
+    bool TriIntersect(const glm::vec3 t1[3], const glm::vec3 t2[3]);
 
  private:
     list_head* map_cells_ = nullptr;