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>

Tools/Checksum/Crc32Static.h

@@ -0,0 +1,27 @@
+#ifndef _CRC32STATIC_H_
+#define _CRC32STATIC_H_
+
+#include "Common.h"
+#include <windows.h>
+
+class CCrc32Static
+{
+public:
+	CCrc32Static();
+	virtual ~CCrc32Static();
+
+	static unsigned long BufferCrc32(const char *szBuffer, size_t size, unsigned long &dwCrc32);
+	static unsigned long StringCrc32(const char *szString, unsigned long &dwCrc32);
+	static unsigned long FileCrc32Streams(const char *szFilename, unsigned long &dwCrc32);
+	static unsigned long FileCrc32Win32(const char *szFilename, unsigned long &dwCrc32);
+	static unsigned long FileCrc32Filemap(const char *szFilename, unsigned long &dwCrc32);
+	static unsigned long FileCrc32Assembly(const char *szFilename, unsigned long &dwCrc32);
+
+protected:
+	static bool GetFileSizeQW(const HANDLE hFile, __int64 &qwSize);
+	static inline void CalcCrc32(const unsigned char byte, unsigned long &dwCrc32);
+
+	static unsigned long s_arrdwCrc32Table[256];
+};
+
+#endif