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CryEntitySystem/IDGenerator.h

@@ -0,0 +1,57 @@
+//////////////////////////////////////////////////////////////////////
+//
+//  Game Source Code
+//
+//  File: IDGenerator.h
+//  Description: ID Generator class.
+//
+//  History:
+//  - August 6, 2001: Created by Alberto Demichelis
+//
+//////////////////////////////////////////////////////////////////////
+
+#ifndef GAME_IDGENERATOR_H
+#define GAME_IDGENERATOR_H
+#if _MSC_VER > 1000
+# pragma once
+#endif
+
+#include <vector>
+
+typedef std::vector<bool> BitVector;							// depending on STL implementation this might be a bit vector or a byte vector
+typedef BitVector::iterator BitVectorItor;
+
+class CIDGenerator  
+{
+public:
+	//! constructor
+	CIDGenerator();
+	//! destructor
+	virtual ~CIDGenerator();
+	//!
+	void Reset();
+	//! just a different range, might return a static id if there is no dynamic left (very unlikely)
+	WORD GetNewDynamic();
+	//! just a different range, might return a static id if there is no dynamic left (very unlikely)
+	WORD GetNewStatic();
+	//!
+	void Remove(WORD nID);
+	//!
+	void Mark(WORD nID);
+	//!
+	unsigned sizeofThis()const
+	{
+		return sizeof(*this) + sizeof(m_vUsedIDs[0]) * m_vUsedIDs.size();
+	}
+	//!
+	bool IsUsed(WORD nID);
+
+	//!
+	static bool IsDynamicEntityId( WORD nID );
+
+private: // ------------------------------------------------------------
+
+	BitVector				m_vUsedIDs;			//!<
+};
+
+#endif // GAME_IDGENERATOR_H