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/DirectShow_WinXP/VMR/VMRMix/Demonstration.h

@@ -0,0 +1,95 @@
+//------------------------------------------------------------------------------
+// File: Demonstration.h
+//
+// Desc: DirectShow sample code
+//       Header file and class description for CDemonstration, 
+//       "special effects" module to represent capabilities of VMR.
+//       This class is called from CVMRMixDlg by the "Play" button.
+//       CDemonstration contains CVMRCore member (VMR engine), through which 
+//       it performs initialization of the graph builder and presentation.
+//
+// Copyright (c) 2000-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+#ifndef HDR_DEMONSTRATION
+#define HDR_DEMONSTRATION
+
+#include "stdafx.h"
+
+class CVMRMixDlg;
+
+class CDemonstration
+{
+private:
+    CVMRMixDlg *    m_pDlg;             // 'parent' dialog
+    char            m_szMsg[MAX_PATH];  // auxiliary string for debug messages
+    bool            m_bInitialized;     // true if graph is build and files are rendered;
+                                        // false otherwise
+    CMediaList      m_MList;            // media list to be played
+    CVMRCore *      m_pCore;            // 'main' class that implements VMR management
+    VMRALPHABITMAP  m_sBmpParams;       // used in IVMRMixerBitmap; parameters 
+                                        // of the bitmap overlapping the video
+    HBITMAP         m_hbmp;             // handle to the bitmap overlapping the video
+
+    HRESULT SetAlphaBitmapColorKey(UINT ImageID);   // set color key for overlapping bitmap
+    HRESULT GetValidVMRBitmap(UINT ImageID);        // create bitmap compatible with renderer's settings
+
+public:
+    CDemonstration( CVMRMixDlg * pDlg,      // 'parent' dialog
+                    CMediaList * pMajorList,// media list to play 
+                    int nSize,              // size of pMajorList
+                    HRESULT *phr) :         
+        m_pDlg(pDlg),
+        m_hbmp(NULL),
+        m_pCore(NULL),
+        m_bInitialized(false)
+    {
+        ASSERT(phr);
+        ASSERT( nSize > 0);
+
+        strcpy( m_szMsg, "");
+
+        *phr = S_OK;
+
+        ZeroMemory( &m_sBmpParams, sizeof(VMRALPHABITMAP));
+        srand( clock());
+        
+        pMajorList->Shuffle();
+        if( false == pMajorList->Clone(nSize, &m_MList))
+        {
+            *phr = E_INVALIDARG;
+            return;
+        }
+    };
+    virtual ~CDemonstration()
+    {
+        if( m_pCore )
+        {
+            delete m_pCore;
+        }
+        if( m_hbmp)
+        {
+            DeleteObject( m_hbmp );
+        }
+        if( m_sBmpParams.hdc )
+        {
+            DeleteDC( m_sBmpParams.hdc );
+        }
+        m_MList.Clean();
+    };
+
+    HRESULT Initialize(); 
+    HRESULT UpdateStreams(clock_t tStart);
+    virtual HRESULT Perform();
+
+    // this function calculates parameters for the 'swirling windows' effect
+    void FountainPath(  long t, 
+                        long T, 
+                        int n, 
+                        NORMALIZEDRECT r0,  
+                        double A0, 
+                        NORMALIZEDRECT * pR, 
+                        double * pA);
+};
+
+#endif