商业编程-源码-贪吃蛇源代码MFC.zip

// SnakeView.cpp : implementation of the CSnakeView class // #include "stdafx.h" #include "Snake.h" #include "MainFrm.h" #include "SnakeDoc.h" #include "SnakeView.h" #include "ScoreBoardDlg.h" #include "ChangeSpeedDlg.h" #include <mmsystem.h> #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif #define IDT_TIMER 1000 ///////////////////////////////////////////////////////////////////////////// // CSnakeView IMPLEMENT_DYNCREATE(CSnakeView, CView) BEGIN_MESSAGE_MAP(CSnakeView, CView) //{{AFX_MSG_MAP(CSnakeView) ON_WM_SIZE() ON_WM_PAINT() ON_WM_CONTEXTMENU() ON_WM_CREATE() ON_WM_DESTROY() ON_WM_TIMER() ON_WM_KEYDOWN() ON_WM_CLOSE() ON_COMMAND(IDM_CHANGELEVEL, OnChangeLevel) //}}AFX_MSG_MAP // Standard printing commands ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint) ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CSnakeView construction/destruction CSnakeView::CSnakeView() : m_pDCMemDB(0), m_pBmpDB(0), m_pActionHandler(0), m_numCellsX(10), m_numCellsY(10), m_timerID(0) { } CSnakeView::~CSnakeView() { if (m_pDCMemDB) delete m_pDCMemDB; if (m_pBmpDB) delete m_pBmpDB; if (m_pActionHandler) delete m_pActionHandler; } BOOL CSnakeView::PreCreateWindow(CREATESTRUCT& cs) { // TODO: Modify the Window class or styles here by modifying // the CREATESTRUCT cs return CView::PreCreateWindow(cs); } ///////////////////////////////////////////////////////////////////////////// // CSnakeView drawing void CSnakeView::OnDraw(CDC* pDC) { CSnakeDoc* pDoc = GetDocument(); ASSERT_VALID(pDoc); m_pDC = pDC; CRect rect; GetClientRect(&rect); // draw boundary CBitmap bmpBrick; bmpBrick.LoadBitmap(IDB_BRICK); CBrush brBrick; brBrick.CreatePatternBrush(&bmpBrick); CBrush *pBrOld = pDC->SelectObject(&brBrick); pDC->PatBlt(rect.left, rect.top, rect.Width(), rect.Height(), PATCOPY); pDC->SelectObject(pBrOld); // draw interior field CBitmap bmpCell; bmpCell.LoadBitmap(IDB_CELL); CBrush brCell; brCell.CreatePatternBrush(&bmpCell); pBrOld = pDC->SelectObject(&brCell); pDC->PatBlt(rect.left+32, rect.top+32+32, rect.Width()-64, rect.Height()-64-32, PATCOPY); pDC->SelectObject(pBrOld); // draw scoreboard drawSprite(pDC, IDB_SCOREBOARD, (int)((m_numCellsX-9)/2.0+1)*32, 5); pDC->SetBkMode(TRANSPARENT); pDC->TextOut((int)((m_numCellsX-9)/2.0+2)*32, 16, "Scores:"); // draw all game components if (m_pActionHandler) m_pActionHandler->draw(); m_pDC = 0; } ///////////////////////////////////////////////////////////////////////////// // CSnakeView printing BOOL CSnakeView::OnPreparePrinting(CPrintInfo* pInfo) { // default preparation return DoPreparePrinting(pInfo); } void CSnakeView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add extra initialization before printing } void CSnakeView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/) { // TODO: add cleanup after printing } ///////////////////////////////////////////////////////////////////////////// // CSnakeView diagnostics #ifdef _DEBUG void CSnakeView::AssertValid() const { CView::AssertValid(); } void CSnakeView::Dump(CDumpContext& dc) const { CView::Dump(dc); } CSnakeDoc* CSnakeView::GetDocument() // non-debug version is inline { ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CSnakeDoc))); return (CSnakeDoc*)m_pDocument; } #endif //_DEBUG ///////////////////////////////////////////////////////////////////////////// // CSnakeView message handlers void CSnakeView::OnInitialUpdate() { CView::OnInitialUpdate(); CClientDC dcClient(this); OnPrepareDC(&dcClient); m_pDCMemDB = new CDC; m_pDCMemDB->CreateCompatibleDC(&dcClient); m_pDCMemDB->SetMapMode(dcClient.GetMapMode()); } void CSnakeView::OnSize(UINT nType, int cx, int cy) { CView::OnSize(nType, cx, cy); CRect rect; GetClientRect(&rect); // device coordinates // API without DC as arguments, // always use device coordinates if ((rect.right <= m_sizeDB.cx) && (rect.bottom <= m_sizeDB.cy)) return; if (rect.right > m_sizeDB.cx) m_sizeDB.cx = rect.right; if (rect.bottom > m_sizeDB.cy) m_sizeDB.cy = rect.bottom; CClientDC dcClient(this); OnPrepareDC(&dcClient); // order dependency: after adjustScrollSizes() if (m_pBmpDB) delete m_pBmpDB; m_pBmpDB = new CBitmap; m_pBmpDB->CreateCompatibleBitmap(&dcClient, m_sizeDB.cx, m_sizeDB.cy); } void CSnakeView::OnPaint() { CPaintDC dc(this); // device context for painting OnPrepareDC(&dc); CBitmap *pBmpOld = m_pDCMemDB->SelectObject(m_pBmpDB); CRect rectInvalid; dc.GetClipBox(&rectInvalid); // logical coordinate m_pDCMemDB->SelectClipRgn(NULL); m_pDCMemDB->IntersectClipRect(&rectInvalid); /* CBrush brBackground((COLORREF)::GetSysColor(COLOR_WINDOW)); CBrush *pBrOld = m_pDCMemDB->SelectObject(&brBackground); m_pDCMemDB->PatBlt(rectInvalid.left, rectInvalid.top, rectInvalid.Width(), rectInvalid.Height(), PATCOPY); m_pDCMemDB->SelectObject(pBrOld); */ OnDraw(m_pDCMemDB); dc.BitBlt(rectInvalid.left, rectInvalid.top, rectInvalid.Width(), rectInvalid.Height(), m_pDCMemDB, // MM_TEXT mode rectInvalid.left, rectInvalid.top, SRCCOPY); m_pDCMemDB->SelectObject(pBmpOld); } void CSnakeView::drawSprite(CDC *pDC, int resID, int ix, int iy) { BITMAP bmpInfo; CSize sizeBmp; CDC dcMem1, dcMem2; dcMem1.CreateCompatibleDC(pDC); dcMem2.CreateCompatibleDC(pDC); // Step 1 // create mask step 1: XOR the specified color CBitmap bmpSprite; bmpSprite.LoadBitmap(resID); bmpSprite.GetBitmap(&bmpInfo); sizeBmp = CSize(bmpInfo.bmWidth, bmpInfo.bmHeight); CBitmap bmpMask1; bmpMask1.CreateCompatibleBitmap(pDC, bmpInfo.bmWidth, bmpInfo.bmHeight); CBitmap *pOldBmp1 = (CBitmap *)dcMem1.SelectObject(&bmpMask1); CPen *pPen = (CPen *) dcMem1.SelectStockObject(NULL_PEN); CBrush br(RGB(131,0,0)); CBrush *pBr = (CBrush *)dcMem1.SelectObject(&br); dcMem1.Rectangle(0,0,bmpInfo.bmWidth+1, bmpInfo.bmHeight+1); dcMem1.SelectObject(pBr); dcMem1.SelectObject(pPen); CBitmap *pOldBmp2 = (CBitmap *)dcMem2.SelectObject(&bmpSprite); // transparent color will now be black dcMem1.SetMapMode(MM_TEXT); dcMem2.SetMapMode(MM_TEXT); dcMem1.BitBlt(0, 0, bmpInfo.bmWidth, bmpInfo.bmHeight, &dcMem2, 0, 0, SRCINVERT); dcMem1.SelectObject(pOldBmp1); dcMem2.SelectObject(pOldBmp2); // Step 2 // create mask step 2: make transparent color region white CBitmap bmpMask2; bmpMask2.CreateCompatibleBitmap(pDC, bmpInfo.bmWidth, bmpInfo.bmHeight); pOldBmp2 = (CBitmap *)dcMem2.SelectObject(&bmpMask2); pOldBmp1 = (CBitmap *)dcMem1.SelectObject(&bmpMask1); dcMem1.SetMapMode(MM_TEXT); dcMem2.SetMapMode(MM_TEXT); dcMem2.BitBlt(0, 0, bmpInfo.bmWidth, bmpInfo.bmHeight, &dcMem1, 0, 0, NOTSRCCOPY); dcMem1.SelectObject(pOldBmp1); dcMem2.Selec