English
ImageManager.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：7k
源码类别：
游戏
开发平台：
Visual C++
- /*****************************************************************************
- *
- * ImageManager.cpp
- *
- * Electrical Engineering Faculty - Software Lab
- * Spring semester 1998
- *
- * Tanks game
- *
- * Module description: Implements the image manager object. Handle the game
- * objects' images - load from the resource, calculate
- * image bitmask, animate, and release the images at the
- * end.
- *
- *
- * Authors: Eran Yariv - 28484475
- * Moshe Zur - 24070856
- *
- *
- * Date: 23/09/98
- *
- ******************************************************************************/
- #include <stdafx.h>
- #include <ImageManager.h>
- #include <GameConsts.h>
- #include <BitmapTables.h>
- void CImageManager::LoadImages ()
- {
- ASSERT (!m_bCreated); // Called only once
- for (int uImgID=0; uImgID < IMG_LAST_INDEX; uImgID++)
- if (IMG_GAMEOVER != uImgID) // Conserve memory
- LoadSingleImage (ImageType(uImgID));
- m_bCreated=TRUE;
- }
- void CImageManager::LoadSingleImage (ImageType uImgID)
- {
- ASSERT (uImgID >=0 && uImgID < IMG_LAST_INDEX);
- // Traverse all images
- for (UINT uSumImgID = 0;
- uSumImgID < m_ImagesInfo[uImgID].uNumSubImages;
- uSumImgID++)
- // Traverse all sub-images
- for (UINT uFrameID = 0;
- uFrameID < m_ImagesInfo[uImgID].SubImages[uSumImgID].uNumBitmaps;
- uFrameID++)
- {
- // Traverse all bitmaps
- CDIB *pDIB = new CDIB();
- //TRACE("new dib %08xn", pDIB);
- m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].pDIB = pDIB;
- if (!pDIB->ReadFromResource(m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].uBitmapID))
- AfxThrowResourceException(); // Can't load resource bitmap
- // Create bit mask if needed (pointer is initialized to a non-null value):
- if (m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].pBitMask) {
- m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].pBitMask =
- new CBitMask(*pDIB);
- //TRACE("new bitmask %08xn", m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].pBitMask);
- }
- }
- }
- void CImageManager::ReleaseSingleImage (ImageType uImgID)
- {
- ASSERT (uImgID >=0 && uImgID < IMG_LAST_INDEX);
- // Traverse all images
- for (UINT uSumImgID = 0;
- uSumImgID < m_ImagesInfo[uImgID].uNumSubImages;
- uSumImgID++)
- // Traverse all sub-images
- for (UINT uFrameID = 0;
- uFrameID < m_ImagesInfo[uImgID].SubImages[uSumImgID].uNumBitmaps;
- uFrameID++)
- {
- // Traverse all bitmaps
- CDIB *&pDIB =
- m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].pDIB;
- if (NULL != pDIB)
- {
- delete pDIB;
- pDIB = NULL;
- }
- CBitMask *&pBitMask =
- m_ImagesInfo[uImgID].SubImages[uSumImgID].Bitmaps[uFrameID].pBitMask;
- if (NULL != pBitMask)
- {
- delete pBitMask;
- pBitMask = NULL;
- }
- }
- }
- void CImageManager::ReloadMap ()
- {
- ASSERT (m_bCreated); // Called only once
- CDIB *pDIB = m_ImagesInfo[IMG_BOARD].SubImages[0].Bitmaps[0].pDIB;
- ASSERT (NULL != pDIB);
- CDIB tmpDIB;
- BOOL bSuccess = tmpDIB.ReadFromResource (IDB_BOARD);
- ASSERT (bSuccess);
- if (!bSuccess)
- return;
- bSuccess = pDIB->CopyFrom (&tmpDIB);
- ASSERT (bSuccess);
- }
- CImageManager::~CImageManager ()
- {
- if (!m_bCreated)
- return; // Never created
- for (int uImgID=IMG_TANK0; uImgID < IMG_LAST_INDEX; uImgID++)
- ReleaseSingleImage (ImageType(uImgID));
- m_bCreated=FALSE;
- }
- void CImageManager::DisplayImage (HIMAGE &himg, CDIB *pDstDIB, CPoint &pos)
- {
- ASSERT (m_bCreated);
- ASSERT_VALID_HIMAGE (himg); // Costly call
- BitmapType *pCurBitmap = &m_ImagesInfo[himg.bImageType].SubImages[himg.bSubImgID].Bitmaps[himg.bFrame];
- pDstDIB->PasteCKRect (pCurBitmap->pDIB,
- pos.x + pCurBitmap->iXOffset,
- pos.y + pCurBitmap->iYOffset,
- TRANSP_COLOR);
- if (himg.pOverlay != NULL)
- DisplayImage (*himg.pOverlay, pDstDIB, pos);
- }
- void
- CImageManager::UpdateImage (HIMAGE &himg, BOOL &bImageChanged)
- {
- HIMAGE himgOldCopy = himg;
- ASSERT (m_bCreated);
- ASSERT_VALID_HIMAGE (himg); // Costly call
- DWORD dwFrameDelay = m_ImagesInfo[himg.bImageType].SubImages[himg.bSubImgID].dwFrameDelay;
- if (dwFrameDelay != 0) {
- // Not a static image
- DWORD dwNow = GetTickCount();
- if (0 == himg.dwStartFrameTime) // Animation isn't started yet
- {
- himg.dwStartFrameTime = dwNow; // Animation just started
- }
- else
- { // Animation is on the way, calc new frame
- ASSERT (himg.dwStartFrameTime <= dwNow);
- int iNewFrame = int ((dwNow - himg.dwStartFrameTime) / dwFrameDelay);
- UINT uNumBitmaps = m_ImagesInfo[himg.bImageType].SubImages[himg.bSubImgID].uNumBitmaps;
- if (UINT(iNewFrame) >= uNumBitmaps)
- { // Overlap occured
- if (m_ImagesInfo[himg.bImageType].SubImages[himg.bSubImgID].bCyclicAnim)
- {
- // Animation is cyclic => simply restart
- iNewFrame %= uNumBitmaps;
- himg.bFrame = BYTE(iNewFrame);
- }
- else
- { // Animation is not cyclic => Display last frame and set end flag
- himg.bFrame = BYTE(uNumBitmaps - 1);
- himg.bAnimEnded = TRUE;
- }
- } // end of overlap
- else
- himg.bFrame = BYTE(iNewFrame);
- } // End of animation on the way case
- //TRACE ("Animation: timegap = %d, delay = %d, frame = %dn",dwNow - himg.dwStartFrameTime, dwFrameDelay, himg.bFrame);
- } // End of animation image case
- if (FALSE == bImageChanged && // The calling object thinks its image hasn't changed
- 0 != memcmp (&himgOldCopy, &himg, sizeof (HIMAGE))) // but the image handle has changed
- bImageChanged = TRUE;
- }
