175 lines
4.7 KiB
C++
175 lines
4.7 KiB
C++
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose: An object that is used, when modifying the state of the document,
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// to collect information about what objects changed and how they changed.
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// This aggregate info is then passed to CMapDoc::UpdateObjects which performs
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// post processing and view updates.
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//
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// $NoKeywords: $
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//=============================================================================//
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//-----------------------------------------------------------------------------
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// Purpose: Iterates the list of updated objects.
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//-----------------------------------------------------------------------------
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POSITION CUpdateHint::GetHeadPosition(int nIndex)
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{
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return(m_NotifyList[nIndex].Objects.GetHeadPosition());
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}
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//-----------------------------------------------------------------------------
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// Purpose: Iterates the list of updated objects.
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//-----------------------------------------------------------------------------
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CMapClass *CUpdateHint::GetNext(POSITION &pos)
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{
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return(m_NotifyList[nIndex].Objects.GetNext(pos));
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}
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//-----------------------------------------------------------------------------
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// Purpose: Returns the notification code for this update.
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//-----------------------------------------------------------------------------
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int CUpdateHint::GetNotifyCode(void)
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{
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return(m_NotifyList[nIndex].nCode);
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}
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//-----------------------------------------------------------------------------
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// Purpose: Returns the current update region.
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//-----------------------------------------------------------------------------
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BoundBox const &CUpdateHint::GetUpdateRegion(void)
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{
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return(m_UpdateRegion);
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}
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//-----------------------------------------------------------------------------
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// Purpose: Prepares to update an object.
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// Input : pObject - Object that will be updated.
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//-----------------------------------------------------------------------------
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void CUpdateHint::PreUpdateObject(CMapClass *pObject)
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{
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if (pObject != NULL)
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{
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CMapObjectList TempList;
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TempList.AddTail(pObject);
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PreUpdateObjects(&TempList);
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}
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else
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{
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PreUpdateObjects(NULL);
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Prepares to update the list of objects.
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// Input : pObjects - List of objects, NULL if none.
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//-----------------------------------------------------------------------------
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void CUpdateHint::PreUpdateObjects(CMapObjectList *pObjects)
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{
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if (pObjects != NULL)
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{
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POSITION pos = pObjects->GetHeadPosition();
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while (pos != NULL)
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{
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CMapClass *pObject = pObjects->GetNext(pos);
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if (pObject != NULL)
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{
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m_UpdateRegion.UpdateBounds(pObject);
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}
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Prepares to update an object.
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// Input : pObject - Object that will be updated.
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//-----------------------------------------------------------------------------
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void CUpdateHint::PostUpdateObject(CMapClass *pObject, int nNotifyCode)
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{
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if (pObject != NULL)
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{
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CMapObjectList TempList;
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TempList.AddTail(pObject);
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PostUpdateObjects(&TempList, nNotifyCode);
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}
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else
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{
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PostUpdateObjects(NULL, nNotifyCode);
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose: Prepares to update the list of objects.
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// Input : pObjects - List of objects, NULL if none.
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//-----------------------------------------------------------------------------
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void CUpdateHint::PostUpdateObjects(CMapObjectList *pObjects, int nNotifyCode)
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{
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int nIndex = 0;
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bool bFound = false;
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while (!bFound && (nIndex < m_ListEntries))
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{
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if (m_NotifyList[nIndex].nCode == nNotifyCode)
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{
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bFound = true;
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}
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else
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{
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nIndex++;
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}
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}
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if ((!bFound && (nIndex < MAX_NOTIFY_CODES))
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{
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if (nIndex < MAX_NOTIFY_CODES)
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{
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m_ListEntries++;
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}
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}
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else
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{
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ASSERT(nIndex < MAX_NOTIFY_CODES);
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return;
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}
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m_NotifyList[nIndex].Objects.AddTail(pObjects);
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if (pObjects != NULL)
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{
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POSITION pos = pObjects->GetHeadPosition();
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while (pos != NULL)
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{
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CMapClass *pObject = pObjects->GetNext(pos);
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if (pObject != NULL)
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{
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m_UpdateRegion.UpdateBounds(pObject);
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}
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CUpdateHint::Reset(void)
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{
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m_Objects.RemoveAll();
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m_UpdateRegion.ResetBounds();
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}
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//-----------------------------------------------------------------------------
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// Purpose:
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//-----------------------------------------------------------------------------
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void CUpdateHint::UpdateBounds(BoundBox &bbox)
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{
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m_UpdateRegion.UpdateBounds(&bbox);
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}
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