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 Base Class/GraphicLayerError.h

@@ -0,0 +1,34 @@
+// GraphicLayerError.h: interface for the CGraphicLayerError class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#if !defined(AFX_GRAPHICLAYERERROR_H__D06B571E_F0F8_41E8_AD22_257A312F48E0__INCLUDED_)
+#define AFX_GRAPHICLAYERERROR_H__D06B571E_F0F8_41E8_AD22_257A312F48E0__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include "Error.h"
+
+
+class CGraphicLayerError : public CError  
+{
+public:
+	CGraphicLayerError();
+	virtual ~CGraphicLayerError();
+	char *GetErrorMsg()
+	{
+		char msgtemp[MAX_ERRORBUFFER];
+		strcpy(msgtemp,"Graphics Layer Error:");
+		strcat(msgtemp,m_strErrormsg);
+		strcpy(m_strErrormsg,msgtemp);
+		return m_strErrormsg;
+	};
+	CGraphicLayerError(char *msg)
+	{
+		SetErrorMsg(msg);
+	};
+};
+
+#endif // !defined(AFX_GRAPHICLAYERERROR_H__D06B571E_F0F8_41E8_AD22_257A312F48E0__INCLUDED_)