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Shell.cpp
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：4k
源码类别：

游戏

开发平台：

Visual C++

Shell.cpp：源码内容
  1. /*****************************************************************************
  2. *                                                                             
  3. *   Shell.cpp                                                            
  4. *                                                                             
  5. *   Electrical Engineering Faculty - Software Lab                             
  6. *   Spring semester 1998                                                      
  7. *                                                                             
  8. *   Tanks game                                                                
  9. *                                                                             
  10. *   Module description: Implements the shell game 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 <Shell.h>
  22. #include <TankObj.h>
  23. #include <SoundManager.h>
  25. CShell::CShell (UINT uXPos, UINT uYPos, UINT uDirectionIndex, UINT uParentTankID) :
  26.     CMovingGameObject (         uXPos, uYPos,
  27.                                 SHELL_WIDTH, SHELL_HEIGHT, 
  28.                                 uDirectionIndex, 
  29.                                 SHELL_SPEED),
  31.     CExplodingGameObject (      uXPos, uYPos,
  32.                                 SHELL_WIDTH, SHELL_HEIGHT,
  33.                                 SHELL_INTENSITY,
  34.                                 CImageManager::IMG_SHELL_EXPLODE),
  35.     m_uParentTankID (uParentTankID)
  36. {
  37.     m_himgShell = m_GlobalImageManager.GetImage (CImageManager::IMG_SHELL);
  38.     m_GlobalImageManager.RotateImage (m_himgShell, uDirectionIndex);
  39.     m_pCurImage = &m_himgShell; // Ovverride explosion image as current image
  40. }
  42. StateType 
  43. CShell::CalcState (DWORD dwCurTime)
  44. {
  45.     m_bImageChanged = FALSE;    // Assume no change since last CalcState
  46.     if (m_bIsExploding)
  47.     {
  48.         if (IsExplosionOver()) // Shell is exploding and after its last frame
  49.         {
  50.             return STATE_DEAD;
  51.         }
  52.         else 
  53.         {
  54.             return STATE_ALIVE;
  55.         }
  56.     }
  58.     // We're flying high, we're flying high right to the sky......
  60.     // Try to advance...
  61.     int iDistSqr = CalcNewPos (dwCurTime);
  62.     if (iDistSqr < 0) 
  63.     {   // Out of map situation
  64.         return STATE_DEAD;
  65.     }
  67.     // See what the rest of the world thinks about our movement
  68.     CReaction react = m_GlobalObjsList.GetGameReaction (this);
  69.     TerrainType ter = react.GetTerrainDifficulty();
  71.     if ((ter < TERR_BLOCKED) ||  
  72.             // Cool - didn't hit a thing or ...
  73.         ((HIT_TANK == ter) && (react.GetTankID() == m_uParentTankID)))
  74.             // Hit a tank but it's our father
  75.     {
  76.         
  77.         m_bImageChanged = TRUE;
  78.         return STATE_ALIVE;
  79.     }
  81.         // Now we're either hitting a wall or a tank !!
  82.     Explode ();
  83.         // Play the explosion sound
  84.     TANKS_APP->m_gSoundManager.Play(CSoundManager::SHELL_EXPLODE);
  85.     return STATE_ALIVE;
  86. }
  87.         
  88. CReaction
  89. CShell::React(CGameObject *pTo)
  90. {
  91.     if (!m_bIsExploding ||          // We don't react until we explode
  92.         pTo->GetType() != TANK)     // We react only to tanks !
  93.     {
  94.         return CReaction(); // No reaction
  95.     }
  97.     UINT uTankID = pTo->GetID();
  98.     if (CheckAndSetTankNotification(uTankID))
  99.             // We already exploded on this tank before
  100.         return CReaction(); // No reaction
  102.         // OK, this is a tank and it is the first time we explode on it ....
  103.     return CReaction (CalcRelativeExplosionIntensity (pTo, MIN_SHELL_RADIUS, MAX_SHELL_RADIUS));
  104. }