Initial commit: ROW Client source code

Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Engine/Zalla3D Scene Class/ShadowVolume.h

@@ -0,0 +1,30 @@
+// ShadowVolume.h: interface for the CShadowVolume class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#if !defined(AFX_SHADOWVOLUME_H__6B48C03A_7A32_4848_8BB8_2EFAF79067F0__INCLUDED_)
+#define AFX_SHADOWVOLUME_H__6B48C03A_7A32_4848_8BB8_2EFAF79067F0__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include "BaseDataDefine.h"
+#include "3DMath.h"
+#include <vector>
+#include "MeshObject.h"
+
+class CShadowVolume  
+{
+	std::vector<vector3> m_ShadowVolumeVertexList;	    
+public:	
+	void Reset();
+	void Render(LPDIRECT3DDEVICE8 pd3dDevice);
+	void AddEdge(WORD* pEdges,int &nEdges,WORD v0,WORD v1);
+	void MakeShadowVolumeDirectionLight(vector3 *pVertex,int nVertex,WORD *pIndices,int nIndices,vector3 vecLightDir);
+	CShadowVolume();
+	virtual ~CShadowVolume();
+
+};
+
+#endif // !defined(AFX_SHADOWVOLUME_H__6B48C03A_7A32_4848_8BB8_2EFAF79067F0__INCLUDED_)