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>

Library/dxx8/samples/Multimedia/DirectPlay/Maze/MazeCommon/ThingID.h

@@ -0,0 +1,33 @@
+//----------------------------------------------------------------------------
+// File: 
+//
+// Desc: 
+//
+// Copyright (c) 1999-2001 Microsoft Corp. All rights reserved.
+//-----------------------------------------------------------------------------
+#ifndef _CLIENT_ID_H
+#define _CLIENT_ID_H
+
+
+
+
+//-----------------------------------------------------------------------------
+// Name: 
+// Desc: Client IDs are 32-bit values that refer to a particular Client. They are 
+//       broken up into two bitfields, one of which can be used into an index 
+//       of a list of Client 'slots', the other bitfield is a "uniqueness" value 
+//       that is incremented each time a new Client is created. Hence, although
+//       the same slot may be reused by different Clients are different times, 
+//       it's possible to distinguish between the two by comparing uniqueness 
+//       values (you can just compare the whole 32-bit id).
+//-----------------------------------------------------------------------------
+typedef DWORD   CLClientID;
+
+#define CLIENT_SLOT_BITS 13
+#define MAX_CLIENTS      (1<<CLIENT_SLOT_BITS)
+#define CLIENT_SLOT_MASK (MAX_CLIENTS-1)
+
+
+
+
+#endif