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/SceneLayerError.h

@@ -0,0 +1,34 @@
+// SceneLayerError.h: interface for the CSceneLayerError class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#if !defined(AFX_SCENELAYERERROR_H__1FF8B734_844A_420E_84CD_D6EA19F9D74F__INCLUDED_)
+#define AFX_SCENELAYERERROR_H__1FF8B734_844A_420E_84CD_D6EA19F9D74F__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include <error.h>
+
+class CSceneLayerError : public CError
+{
+public:
+	char *GetErrorMsg()
+	{
+		char msgtemp[MAX_ERRORBUFFER];
+		strcpy(msgtemp,"Scene Layer Error:");
+		strcat(msgtemp,m_strErrormsg);
+		strcpy(m_strErrormsg,msgtemp);
+		return m_strErrormsg;
+	};
+	CSceneLayerError();
+	virtual ~CSceneLayerError();
+	CSceneLayerError(char *msg)
+	{
+		SetErrorMsg(msg);
+	};
+
+};
+
+#endif // !defined(AFX_SCENELAYERERROR_H__1FF8B734_844A_420E_84CD_D6EA19F9D74F__INCLUDED_)