diff --git a/server/gameserver/mapinstance.cc b/server/gameserver/mapinstance.cc
index 52d91861..56d07f60 100644
--- a/server/gameserver/mapinstance.cc
+++ b/server/gameserver/mapinstance.cc
@@ -144,7 +144,7 @@ void MapInstance::Init()
     }
 #if 1
     {
-        dtTileRef tile_ref = navmesh_->getTileRefAt(10, 10, 0);
+        dtTileRef tile_ref = navmesh_->getTileRefAt(0, 0, 0);
         int i = 0;
     }
 #endif
@@ -621,3 +621,28 @@ a8::Vec2* MapInstance::GetSpawnPoint(const std::string& name)
     auto itr = spawn_name_hash_.find(name);
     return itr != spawn_name_hash_.end() ? &itr->second : nullptr;
 }
+
+int MapInstance::FindStraightPath(int layer,
+                                  const a8::Vec3& start,
+                                  const a8::Vec3& end,
+                                  std::vector<a8::Vec3>& paths)
+{
+    return 0;
+}
+
+int MapInstance::FindRandomPointAroundCircle(int layer,
+                                             const a8::Vec3& center_pos,
+                                             std::vector<a8::Vec3>& points,
+                                             unsigned int max_points,
+                                             float max_radius)
+{
+    return 0;
+}
+
+int MapInstance::Raycast(int layer,
+                         const a8::Vec3& start,
+                         const a8::Vec3& end,
+                         std::vector<a8::Vec3>& hit_points)
+{
+    return 0;
+}
diff --git a/server/gameserver/mapinstance.h b/server/gameserver/mapinstance.h
index 6dfae90b..6dfe0597 100644
--- a/server/gameserver/mapinstance.h
+++ b/server/gameserver/mapinstance.h
@@ -1,6 +1,10 @@
 #pragma once
 
 #include "DetourNavMesh.h"
+#include "DetourNavMeshQuery.h"
+
+#include <a8/vec2.h>
+#include <a8/vec3.h>
 
 namespace MetaData
 {
@@ -33,7 +37,22 @@ class MapInstance
     MetaData::Map* GetMapMeta() { return map_meta_; }
     Entity* GetEntityByUniId(int uniid);
     a8::Vec2* GetSpawnPoint(const std::string& name);
+
     dtNavMesh* GetNavMesh() { return navmesh_; };
+    dtNavMeshQuery* GetNavMeshQuery() { return navmesh_query_; };
+    int FindStraightPath(int layer,
+                         const a8::Vec3& start,
+                         const a8::Vec3& end,
+                         std::vector<a8::Vec3>& paths);
+    int FindRandomPointAroundCircle(int layer,
+                                    const a8::Vec3& center_pos,
+                                    std::vector<a8::Vec3>& points,
+                                    unsigned int max_points,
+                                    float max_radius);
+    int Raycast(int layer,
+                const a8::Vec3& start,
+                const a8::Vec3& end,
+                std::vector<a8::Vec3>& hit_points);
 
  private:
     void CreateThings();
@@ -52,6 +71,7 @@ class MapInstance
 
  private:
     dtNavMesh* navmesh_ = nullptr;
+    dtNavMeshQuery* navmesh_query_ = nullptr;
 
     int current_uniid_ = 0;
     int current_map_block_uniid_ = 0;