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ObjectsArray.inl
资源名称：tanksrc.zip　[点击查看]
上传用户：royluo
上传日期：2007-01-05
资源大小：1584k
文件大小：3k
源码类别：

游戏

开发平台：

Visual C++

ObjectsArray.inl：源码内容
  1. /*****************************************************************************
  2. *                                                                             
  3. *   ObjectsArray.inl
  4. *                                                                             
  5. *   Electrical Engineering Faculty - Software Lab                             
  6. *   Spring semester 1998                                                      
  7. *                                                                             
  8. *   Tanks game                                                                
  9. *                                                                             
  10. *   Contents: Inline functions implementations.
  11. *                                                                             
  12. *   Authors: Eran Yariv - 28484475                                           
  13. *            Moshe Zur  - 24070856                                           
  14. *                                                                            
  15. *                                                                            
  16. *   Date: 23/09/98                                                           
  17. *                                                                            
  18. ******************************************************************************/
  19. inline CObjectsArray::CObjectsArray () :
  20. m_uSize(0),
  21. m_Array(NULL),
  22. m_lplpTop(NULL)
  23. {
  24. }
  26. inline void
  27. CObjectsArray::Init (UINT uSize)
  28. {
  29.     m_uSize = uSize;
  30.     // Ensure array size is bigger than 0, and allocation succeeded:
  31.     ASSERT(m_uSize);
  32.     m_Array = new CGameObject*[m_uSize];
  33.     m_lplpTop = m_Array;
  34.     m_lplpLast = &m_Array[m_uSize-1];
  35. }
  37. inline CObjectsArray::~CObjectsArray()
  38. {
  39.     delete [] m_Array;
  40. }
  42. inline ARR_POS
  43. CObjectsArray::GetHeadPosition()
  44. {
  45.     return m_Array;     // Initialized to NULL on empty array
  46. }
  48. inline CGameObject* 
  49. CObjectsArray::GetNext(ARR_POS& pos)
  50. {
  51.     CGameObject *pObj = NULL;
  53.     if (pos < m_lplpTop && pos >= m_Array)   // If legal and we can still advance
  54.         pObj = *pos++;
  56.     return pObj;
  57. }
  59. inline BOOL 
  60. CObjectsArray::Add(CGameObject *pGameObj)
  61. {
  62.     if (m_lplpTop <= m_lplpLast) {  // Is there a place ?
  63.         ASSERT(pGameObj);
  64.         pGameObj->SetArrayPosition(m_lplpTop);   // Store position for fast removal
  65.         *m_lplpTop++ = pGameObj;    // Store pointer and advance
  66.         return TRUE;
  67.     }
  68.     return FALSE;
  69. }
  71. inline BOOL 
  72. CObjectsArray::Remove(CGameObject *pGameObj)
  73. {
  74.     // Object stores his position in list:
  75.     ASSERT(pGameObj);
  76.     CGameObject **lplpDelObj = pGameObj->GetArrayPosition();
  77.     ASSERT(lplpDelObj && lplpDelObj>=m_Array && lplpDelObj<m_lplpTop);
  78.     
  79.     // Replace last entry with the one just evacuated:
  80.     *lplpDelObj = *(--m_lplpTop);   // This will also move top one entry down
  81.     
  82.     // Update the newly shuffled object's position:
  83.     (*lplpDelObj)->SetArrayPosition(lplpDelObj);
  85.     // And ofcourse - delete object
  86.     delete pGameObj;
  88.     return TRUE;
  89. }
  91. inline BOOL 
  92. CObjectsArray::IsEmpty()
  93. {
  94.     return (m_lplpTop == m_Array);
  95. }
  97. inline int 
  98. CObjectsArray::GetObjectsCount() const
  99. {
  100.     return (DWORD(m_lplpTop) - DWORD(m_Array)) / sizeof(CGameObject*);
  101. }
  103. inline void
  104. CObjectsArray::Empty()
  105. {
  106.     for (CGameObject** p = m_Array; p < m_lplpTop; p++)
  107.         delete (*p);
  108.     m_lplpTop = m_Array;
  109. }