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/Z3DAniMixer.h

@@ -0,0 +1,63 @@
+// Z3DAniMixer.h: interface for the CZ3DAniMixer class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#if !defined(AFX_Z3DANIMIXER_H__04DC980C_7996_47FE_BF88_BF0EB534AEA5__INCLUDED_)
+#define AFX_Z3DANIMIXER_H__04DC980C_7996_47FE_BF88_BF0EB534AEA5__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+#include "Z3DSkeletonObject.h"
+#include "Z3DAniHolder.h"
+
+#include "vector.h"
+#include "quaternion.h"
+
+
+struct Z3D_POSNDIR
+{
+	vector3	pos;
+	quaternion dir;
+};
+
+class CZ3DAniMixer  
+{
+public:
+	CZ3DAniMixer();
+	virtual ~CZ3DAniMixer();
+
+	bool Init( CZ3DSkeletonObject* pSkel, const matrix* pLocalizer, Z3DAniHolder* pAniHolder, Z3DAniHolder* pAddonAniHolder, long lSkelCount, long lAniHolderCount );
+	void Swap( long lAniHolderIndex, bool bTransitFlag = true );
+	void Mix();
+
+	void SetAddonFactorPeak( float f )
+	{
+		m_fAddonFactorPeak = f;
+	}
+
+	void SustainLast( bool b )
+	{
+		m_bSustainLast = b;
+	}
+
+protected:
+	Z3D_POSNDIR* m_apOperand[2];
+	long* m_pActiveIndex;
+	bool* m_pTransitFlag;
+
+	long m_lSkelCount;
+	long m_lAniHolderCount;
+
+	float m_fAddonFactorPeak;
+	bool m_bSustainLast;
+
+	CZ3DSkeletonObject* m_rpSkeleton;
+	Z3DAniHolder* m_rpAniHolder;
+	Z3DAniHolder* m_rpAddonAniHolder;
+
+	float GetAddFactorCurve( float fCurrent, float fAniLength );
+};
+
+#endif // !defined(AFX_Z3DANIMIXER_H__04DC980C_7996_47FE_BF88_BF0EB534AEA5__INCLUDED_)