1

hammer/updatehint.h

@@ -0,0 +1,61 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef UPDATEHINT_H
+#define UPDATEHINT_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+
+class CUpdateHint : public CObject
+{
+	#define MAX_NOTIFY_CODES 16
+
+	struct NotifyList_t
+	{
+		int nCode;
+		CMapObjectList Objects;
+	};
+
+	public:
+
+		CUpdateHint(void) {}
+
+		//
+		// Called by the code that modifies map objects:
+		//
+		inline void PreUpdateObject(CMapClass *pObject);
+		inline void PreUpdateObjects(CMapObjectList *pObjects);
+
+		inline void PostUpdateObject(CMapClass *pObject, int nNotifyCode);
+		inline void PostUpdateObjects(CMapObjectList *pObjects, int nNotifyCode);
+
+		inline BoundBox const &GetUpdateRegion(void);
+		inline void Reset(void);
+		inline void UpdateBounds(BoundBox &bbox);
+
+		//
+		// Called by the document when processing an update:
+		//
+		inline int GetNotifyCodeCount(void);
+		inline int GetNotifyCode(int nIndex);
+
+		inline POSITION GetHeadPosition(int nIndex);
+		inline CMapClass *GetNext(int nIndex, POSITION &pos);
+
+	protected:
+
+		NotifyList_t m_NotifyList[MAX_NOTIFY_CODES];	// Lists of objects with common notification codes.
+		int m_nListEntries;								// Number of items in the notify list.
+
+		BoundBox m_UpdateRegion;						// 3D map extents that were affected by the change.
+};
+
+
+#endif // UPDATEHINT_H