diff --git a/VCS PC/PtrList.h b/VCS PC/PtrList.h
new file mode 100644
index 0000000..3c640e4
--- /dev/null
+++ b/VCS PC/PtrList.h	
@@ -0,0 +1,167 @@
+#ifndef __PTRLIST
+#define __PTRLIST
+
+class CPtrNode
+{
+public:
+	void*							m_pPtr;
+	union
+	{
+		class CPtrNodeSingleLink*	m_psNext;
+		class CPtrNodeDoubleLink*	m_pdNext;
+
+		class CPtrNode*				m_pNext;	// for CPtrList methods
+	};
+
+public:
+	CPtrNode(void* pItem)
+		: m_pPtr(pItem)
+	{
+	}
+};
+
+class CPtrNodeSingleLink : public CPtrNode
+{
+public:
+	CPtrNodeSingleLink(void* pItem)
+		: CPtrNode(pItem)
+	{
+	}
+};
+
+class CPtrNodeDoubleLink : public CPtrNode
+{
+public:
+	CPtrNodeDoubleLink*			m_pdPrev;
+
+public:
+	CPtrNodeDoubleLink(void* pItem)
+		: CPtrNode(pItem)
+	{
+	}
+};
+
+class CPtrList
+{
+public:
+	union
+	{
+		CPtrNodeSingleLink*		m_psNodes;
+		CPtrNodeDoubleLink*		m_pdNodes;
+
+		CPtrNode*				m_pNodes;	// for CPtrList methods
+	};
+
+	bool						IsMemberOfList(void* pItem)
+	{
+		if ( CPtrNode* pCurNode = m_pNodes )
+		{
+			while ( pCurNode->m_pPtr != pItem )
+			{
+				pCurNode->m_pNext;
+				if ( !pCurNode )
+					return false;
+			}
+			return true;
+		}
+		return false;
+	};
+
+	int							CountElements()
+	{
+		CPtrNode*	pCurMode = m_pNodes;
+		int			nCount = 0;
+
+		while ( pCurMode )
+		{
+			++nCount;
+			pCurMode = pCurMode->m_pNext;
+		}
+		return nCount;
+	};
+};
+
+class CPtrListSingleLink : public CPtrList
+{
+public:
+	// TODO: NEEDS NEW/DELETE OVERLOADS & FLUSH METHOD
+	CPtrNodeSingleLink*				AddItem(void* pItem)
+	{
+		CPtrNodeSingleLink*		pNewLink = new CPtrNodeSingleLink(pItem);
+
+		pNewLink->m_psNext = m_psNodes;
+		m_psNodes = pNewLink;
+
+		return pNewLink;
+	}
+
+	void							DeleteItem(void* pItem)
+	{
+		CPtrNodeSingleLink*		pCurNode = m_psNodes;
+		CPtrNodeSingleLink*		pPrevNode = nullptr;
+
+		if ( pCurNode )
+		{
+			while ( pCurNode->m_pPtr != pItem )
+			{
+				pPrevNode = pCurNode;
+				pCurNode = pCurNode->m_psNext;
+				if ( !pCurNode )
+					return;
+			}
+
+			if ( m_psNodes == pCurNode )
+				m_psNodes = pCurNode->m_psNext;
+			else if ( pPrevNode )
+				pPrevNode->m_psNext = pCurNode->m_psNext;
+
+			delete pCurNode;
+		}
+	}
+};
+
+class CPtrListDoubleLink : public CPtrList
+{
+public:
+	// TODO: NEEDS NEW/DELETE OVERLOADS & FLUSH METHOD
+	CPtrNodeDoubleLink*				AddItem(void* pItem)
+	{
+		CPtrNodeDoubleLink*		pNewLink = new CPtrNodeDoubleLink(pItem);
+
+		pNewLink->m_pdNext = m_pdNodes;
+		pNewLink->m_pdPrev = nullptr;
+
+		if ( m_pdNodes )
+			m_pdNodes->m_pdPrev = pNewLink;
+		m_pdNodes = pNewLink;
+
+		return pNewLink;
+	}
+
+	void							DeleteItem(void* pItem)
+	{
+		CPtrNodeDoubleLink*		pCurNode = m_pdNodes;
+
+		if ( pCurNode )
+		{
+			while ( pCurNode->m_pPtr != pItem )
+			{
+				pCurNode = pCurNode->m_pdNext;
+				if ( !pCurNode )
+					return;
+			}
+
+			if ( m_pdNodes == pCurNode )
+				m_pdNodes = pCurNode->m_pdNext;
+			if ( pCurNode->m_pdPrev )
+				pCurNode->m_pdPrev->m_pdNext = pCurNode->m_pdNext;
+			if ( pCurNode->m_pdNext )
+				pCurNode->m_pdNext->m_pdPrev = pCurNode->m_pdPrev;
+			
+			delete pCurNode;
+		}
+	}
+};
+
+
+#endif
\ No newline at end of file
diff --git a/VCS PC/VCS PC.vcxproj b/VCS PC/VCS PC.vcxproj
index a2c2a20..a854f3a 100644
--- a/VCS PC/VCS PC.vcxproj	
+++ b/VCS PC/VCS PC.vcxproj	
@@ -452,6 +452,7 @@ popd</Command>
     <ClInclude Include="Pools.h" />
     <ClInclude Include="PostEffects.h" />
     <ClInclude Include="Project2dfx.h" />
+    <ClInclude Include="PtrList.h" />
     <ClInclude Include="Queue.h" />
     <ClInclude Include="RealTimeShadowMgr.h" />
     <ClInclude Include="Replay.h" />
diff --git a/VCS PC/VCS PC.vcxproj.filters b/VCS PC/VCS PC.vcxproj.filters
index 7a42640..773b70d 100644
--- a/VCS PC/VCS PC.vcxproj.filters	
+++ b/VCS PC/VCS PC.vcxproj.filters	
@@ -494,6 +494,9 @@
     <ClInclude Include="PostEffects.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="PtrList.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="LoadVars.inc">
diff --git a/VCS PC/World.cpp b/VCS PC/World.cpp
index 8f51fda..8a6bcf0 100644
--- a/VCS PC/World.cpp	
+++ b/VCS PC/World.cpp	
@@ -19,8 +19,8 @@ void CWorld::ClearForRestart()
 	// Clear shadows from CBuildings
 	for ( int i = 0; i < 14400; i++ )
 	{
-		for ( auto it = ms_aSectors[i].building.sNode; it; it = it->next )
-			static_cast<CBuilding*>(it->entity)->ClearForRestart();
+		for ( auto it = ms_aSectors[i].building.m_psNodes; it; it = it->m_psNext )
+			static_cast<CBuilding*>(it->m_pPtr)->ClearForRestart();
 	}
 }
 
diff --git a/VCS PC/World.h b/VCS PC/World.h
index 4557a1a..c1bc11f 100644
--- a/VCS PC/World.h	
+++ b/VCS PC/World.h	
@@ -3,39 +3,15 @@
 
 #include "General.h"
 #include "PlayerInfo.h"
+#include "PtrList.h"
 
 #define NUM_PLAYERS		2;
 
-class CPtrNodeSingle
-{
-public:
-	CEntity*		entity;
-	CPtrNodeSingle*	next;
-};
-
-class CPtrNodeDouble
-{
-public:
-	CEntity*		entity;
-	CPtrNodeDouble*	next;
-	CPtrNodeDouble*	prev;
-};
-
-class CPtrList
-{
-public:
-	union
-	{
-		CPtrNodeSingle* sNode;
-		CPtrNodeDouble* dNode;
-	};
-};
-
 class CSector
 {
 public:
-	CPtrList		building;
-	CPtrList		dummy;
+	CPtrListSingleLink		building;
+	CPtrListSingleLink		dummy;
 };