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Bomb.cpp
Package: tanksrc.zip　[view]
Upload User: royluo
Upload Date: 2007-01-05
Package Size: 1584k
Code Size: 3k
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Game Program

Development Platform:

Visual C++

Bomb.cpp：Code Content
  1. /*****************************************************************************
  2. *                                                                             
  3. *   Bomb.cpp                                                            
  4. *                                                                             
  5. *   Electrical Engineering Faculty - Software Lab                             
  6. *   Spring semester 1998                                                      
  7. *                                                                             
  8. *   Tanks game                                                                
  9. *                                                                             
  10. *   Module description: Implements the bomb object.
  11. *                       
  12. *                                                                             
  13. *   Authors: Eran Yariv - 28484475                                           
  14. *            Moshe Zur  - 24070856                                           
  15. *                                                                            
  16. *                                                                            
  17. *   Date: 23/09/98                                                           
  18. *                                                                            
  19. ******************************************************************************/
  20. #include <stdafx.h>
  21. #include <Bomb.h>
  22. #include <TankObj.h>
  24. CBomb::CBomb (CPoint& Origin, UINT uDirectionIndex) :
  25.     CMovingGameObject (         Origin.x, Origin.y,
  26.                                 BOMB_WIDTH, BOMB_HEIGHT, 
  27.                                 uDirectionIndex, 
  28.                                 BOMB_SPEED),
  30.     CExplodingGameObject (      Origin.x, Origin.y,
  31.                                 BOMB_WIDTH, BOMB_HEIGHT,
  32.                                 BOMB_INTENSITY,
  33.                                 CImageManager::IMG_SHELL_EXPLODE),   // TODO: replace(?)
  34.     m_Origin(Origin)
  35. {
  36.     m_himgBomb = m_GlobalImageManager.GetImage (CImageManager::IMG_BOMB);
  37.     m_pCurImage = &m_himgBomb; // Override explosion image as current image
  38. }
  40. StateType 
  41. CBomb::CalcState (DWORD dwCurTime)
  42. {
  43.     m_bImageChanged = FALSE;    // Assume no change since last CalcState
  44.     if (m_bIsExploding)
  45.     {
  46.         if (IsExplosionOver()) // Bomb is exploding and after its last frame
  47.         {
  48.             return STATE_DEAD;
  49.         }
  50.         else 
  51.         {
  52.             return STATE_ALIVE;
  53.         }
  54.     }
  56.     // We're flying high, we're flying high right to the sky......
  58.     // Try to advance...
  59.     int iDistSqr = CalcNewPos (dwCurTime, FALSE);
  60.     if (iDistSqr < 0) 
  61.     {   // Out of map situation
  62.         return STATE_DEAD;
  63.     }
  64.     if (m_GlobalImageManager.ImageEnded (m_himgBomb))
  65.     {
  66.         // Bomb hit's the ground
  67.         Explode ();
  68.     }
  69.     return STATE_ALIVE;
  70. }
  71.         
  72. CReaction
  73. CBomb::React(CGameObject *pTo)
  74. {
  75.     if (!m_bIsExploding ||          // We don't react until we explode
  76.         pTo->GetType() != TANK)     // We react only to tanks !
  77.     {
  78.         return CReaction(); // No reaction
  79.     }
  81.     UINT uTankID = pTo->GetID();
  82.     if (CheckAndSetTankNotification(uTankID))
  83.             // We already exploded on this tank before
  84.         return CReaction(); // No reaction
  86.         // OK, this is a tank and it is the first time we explode on it ....
  87.     return CReaction (CalcRelativeExplosionIntensity (pTo, MIN_BOMB_RADIUS, MAX_BOMB_RADIUS));
  88. }