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ShieldStatus.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：3k
源码类别：

游戏

开发平台：

Visual C++

ShieldStatus.cpp：源码内容
  1. /*****************************************************************************
  2. *                                                                             
  3. *   SheildStatus.cpp
  4. *                                                                             
  5. *   Electrical Engineering Faculty - Software Lab                             
  6. *   Spring semester 1998                                                      
  7. *                                                                             
  8. *   Tanks game                                                                
  9. *                                                                             
  10. *   Module description: Implements the shield status object that is displayed
  11. *                       in the main dialog.
  12. *                       
  13. *                                                                             
  14. *   Authors: Eran Yariv - 28484475                                           
  15. *            Moshe Zur  - 24070856                                           
  16. *                                                                            
  17. *                                                                            
  18. *   Date: 23/09/98                                                           
  19. *                                                                            
  20. ******************************************************************************/
  21. #include "stdafx.h"
  22. #include "Tanks.h"
  23. #include "ShieldStatus.h"
  25. #ifdef _DEBUG
  26. #define new DEBUG_NEW
  27. #undef THIS_FILE
  28. static char THIS_FILE[] = __FILE__;
  29. #endif
  31. BEGIN_MESSAGE_MAP(CShieldStatus, CButton)
  32. //{{AFX_MSG_MAP(CShieldStatus)
  33. ON_WM_QUERYNEWPALETTE()
  34. ON_WM_PALETTECHANGED()
  35. //}}AFX_MSG_MAP
  36. END_MESSAGE_MAP()
  38. CShieldStatus::CShieldStatus():
  39.         m_uPrevShieldLevel (0),
  40.         m_uCurShieldLevel (100)
  41. {
  42.     m_DIB.CreateEmpty (SHIELD_STATUS_WIDTH, MAP_HEIGHT);
  43.     m_DIB.GetPaletteFromResourceBitmap (IDB_BULLET);
  44. }
  46. void CShieldStatus::SetLevel (UINT uShieldLevel)
  47. {
  48.     ASSERT (uShieldLevel <= 100);
  49.     m_uCurShieldLevel = uShieldLevel;
  50.     if (m_uCurShieldLevel != m_uPrevShieldLevel)
  51.         InvalidateRect (NULL, FALSE);
  52. }
  55. enum {  BLOCK_SIZE = 7,
  56.         GAP_SIZE   = 2
  57.      };
  59. CDIB *CShieldStatus::GetImage ()
  60. {
  61.     if (m_uCurShieldLevel != m_uPrevShieldLevel)
  62.     {   // Level has changed - recreate image
  63.         int iNumBars = (MAP_HEIGHT + GAP_SIZE) / (BLOCK_SIZE + GAP_SIZE);
  64.         int iColorStep = int(float(255) / float(iNumBars));
  65.         iNumBars = int (float(iNumBars) * float (m_uCurShieldLevel) / float(100));
  67.         int iCurColor = 0;
  69.         m_DIB.FillSolidColor (0,0,0); // Clear to background
  70.         for (int i=0; i < iNumBars; i++)
  71.         {
  72.             m_DIB.FillRect (0, 
  73.                             i*(BLOCK_SIZE + GAP_SIZE), 
  74.                             SHIELD_STATUS_WIDTH,
  75.                             BLOCK_SIZE, 
  76.                             255 - iCurColor, 0, iCurColor);
  77.             iCurColor += iColorStep;
  78.         }
  79.         m_uPrevShieldLevel = m_uCurShieldLevel;
  80.     }
  81.     return &m_DIB;
  82. }