diff --git a/RecastDemo/Source/NavMeshPruneTool.cpp b/RecastDemo/Source/NavMeshPruneTool.cpp
index 859f67e..79a48df 100644
--- a/RecastDemo/Source/NavMeshPruneTool.cpp
+++ b/RecastDemo/Source/NavMeshPruneTool.cpp
@@ -21,6 +21,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <float.h>
+#include <vector>
 #include "SDL.h"
 #include "SDL_opengl.h"
 #include "imgui.h"
@@ -36,43 +37,6 @@
 #	define snprintf _snprintf
 #endif
 
-
-
-// Copy/paste from Recast int array
-class PolyRefArray
-{
-	dtPolyRef* m_data;
-	int m_size, m_cap;
-	inline PolyRefArray(const PolyRefArray&);
-	inline PolyRefArray& operator=(const PolyRefArray&);
-public:
-	
-	inline PolyRefArray() : m_data(0), m_size(0), m_cap(0) {}
-	inline PolyRefArray(int n) : m_data(0), m_size(0), m_cap(0) { resize(n); }
-	inline ~PolyRefArray() { dtFree(m_data); }
-	void resize(int n)
-	{
-		if (n > m_cap)
-		{
-			if (!m_cap) m_cap = n;
-			while (m_cap < n) m_cap *= 2;
-			dtPolyRef* newData = (dtPolyRef*)dtAlloc(m_cap*sizeof(dtPolyRef), DT_ALLOC_TEMP);
-			if (m_size && newData) memcpy(newData, m_data, m_size*sizeof(dtPolyRef));
-			dtFree(m_data);
-			m_data = newData;
-		}
-		m_size = n;
-	}
-	inline void push(dtPolyRef item) { resize(m_size+1); m_data[m_size-1] = item; }
-	inline dtPolyRef pop() { if (m_size > 0) m_size--; return m_data[m_size]; }
-	inline const dtPolyRef& operator[](int i) const { return m_data[i]; }
-	inline dtPolyRef& operator[](int i) { return m_data[i]; }
-	inline int size() const { return m_size; }
-};
-
-
-
-
 class NavmeshFlags
 {
 	struct TileFlags
@@ -171,13 +135,17 @@ static void floodNavmesh(dtNavMesh* nav, NavmeshFlags* flags, dtPolyRef start, u
 	// If already visited, skip.
 	if (flags->getFlags(start))
 		return;
+
+	flags->setFlags(start, flag);
 		
-	PolyRefArray openList;
-	openList.push(start);
+	std::vector<dtPolyRef> openList;
+	openList.push_back(start);
 
 	while (openList.size())
 	{
-		const dtPolyRef ref = openList.pop();
+		const dtPolyRef ref = openList.back();
+		openList.pop_back();
+
 		// Get current poly and tile.
 		// The API input has been cheked already, skip checking internal data.
 		const dtMeshTile* tile = 0;
@@ -194,7 +162,7 @@ static void floodNavmesh(dtNavMesh* nav, NavmeshFlags* flags, dtPolyRef start, u
 			// Mark as visited
 			flags->setFlags(neiRef, flag);
 			// Visit neighbours
-			openList.push(neiRef);
+			openList.push_back(neiRef);
 		}
 	}
 }