WIN32GDI双缓冲打螃蟹小游戏

// plane.cpp : Defines the entry point for the application. // #include "stdafx.h" #include "resource.h" #include "math.h" #define MAX_LOADSTRING 100 #define WNDWIDTH 400 #define WNDHEIGHT 600 #define MAXBULLETS 70 // Global Variables: HINSTANCE hInst; // current instance TCHAR szTitle[MAX_LOADSTRING]; // The title bar text TCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text HWND hMainWnd; typedef struct unit{ int x; int y; HBITMAP hbmp; int heal; }*punit; bool g_bActive = false; HDC hdc; HDC hMemDC, hMemDC2; HBITMAP hBmp, hbmpPlane, hbmpEnemy, hbmpBullet; HBRUSH hbr= CreateSolidBrush(RGB(255,0,0)); HANDLE TimerHandle, RenderHandle; HICON hIcon; unit plane, enemy, bullet[MAXBULLETS]; int newbullet=0; RECT rc={20,8,20+enemy.heal*(300/30), 16}, rc2={19,7,21+300,17}; bool bUp=false, bDown=false, bLeft=false, bRight=false; // Foward declarations of functions included in this code module: ATOM MyRegisterClass(HINSTANCE hInstance); BOOL InitInstance(HINSTANCE, int); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); LRESULT CALLBACK About(HWND, UINT, WPARAM, LPARAM); BOOL InitDC(); void Render(); void OnKeyDown(UINT nKey, UINT nFlags); void OnKeyUp(UINT nKey, UINT nFlags); DWORD WINAPI TimerProc(LPVOID lpParameter); DWORD WINAPI RenderProc(LPVOID lpParameter); void Reset(); int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // TODO: Place code here. MSG msg; HACCEL hAccelTable; // Initialize global strings LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_PLANE, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // Perform application initialization: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } if(!InitDC()) return FALSE; hIcon=LoadIcon(hInst, (LPCTSTR)IDI_ENEMY); DWORD threadID; TimerHandle=CreateThread(0, 0, (LPTHREAD_START_ROUTINE)TimerProc, NULL, 0, &threadID); RenderHandle=CreateThread(0, 0, (LPTHREAD_START_ROUTINE)RenderProc, NULL, 0, &threadID); hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_PLANE); // Main message loop: while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } return msg.wParam; } // // FUNCTION: MyRegisterClass() // // PURPOSE: Registers the window class. // // COMMENTS: // // This function and its usage is only necessary if you want this code // to be compatible with Win32 systems prior to the 'RegisterClassEx' // function that was added to Windows 95. It is important to call this function // so that the application will get 'well formed' small icons associated // with it. // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEX wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_PLANE); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = NULL;//(LPCSTR)IDC_PLANE; wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL); return RegisterClassEx(&wcex); } // // FUNCTION: InitInstance(HANDLE, int) // // PURPOSE: Saves instance handle and creates main window // // COMMENTS: // // In this function, we save the instance handle in a global variable and // create and display the main program window. // BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { HWND hWnd; hInst = hInstance; // Store instance handle in our global variable hWnd = CreateWindow(szWindowClass, szTitle, WS_POPUP|WS_CAPTION|WS_SYSMENU|WS_MINIMIZEBOX, CW_USEDEFAULT, 0, WNDWIDTH, WNDHEIGHT, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } hMainWnd=hWnd; ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // // FUNCTION: WndProc(HWND, unsigned, WORD, LONG) // // PURPOSE: Processes messages for the main window. // // WM_COMMAND - process the application menu // WM_PAINT - Paint the main window // WM_DESTROY - post a quit message and return // // LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { int wmId, wmEvent; TCHAR szHello[MAX_LOADSTRING]; LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING); switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // Parse the menu selections: switch (wmId) { case IDM_ABOUT: DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } break; case WM_ACTIVATE: // 窗口的活动状态 { switch((LOWORD(wParam))) { case WA_ACTIVE: case WA_CLICKACTIVE: g_bActive = true; break; case WA_INACTIVE: g_bActive = false; break; default: break; } } break; case WM_CREATE: g_bActive=true; break; // case WM_PAINT: // Render(); // break; case WM_DESTROY: PostQuitMessage(0); break; case WM_KEYDOWN: OnKeyDown(wParam, lParam); Render(); break; case WM_KEYUP: OnKeyUp(wParam, lParam); Render(); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } // Mesage handler for about box. LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) { case WM_INITDIALOG: return TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return TRUE; } break; } return FALSE; } BOOL InitDC() { hdc=GetDC(hMainWnd); if(hdc==NULL) return FALSE; hMemDC=::CreateCompatibleDC(NULL); if(hMemDC==NULL) return FALSE; hBmp=::CreateCompatibleBitmap(hdc, WNDWIDTH, WNDHEIGHT); if(hBmp==NULL) return FALSE; SelectObject(hMemDC, hBmp); hbmpBullet=LoadBitmap(hInst, (LPCTSTR)IDB_BITMAP_BULLET); enemy.hbmp=LoadBitmap(hInst, (LPCTSTR)IDB_BITMAP_ENEMY); plane.hbmp=LoadBitmap(hInst, (LPCTSTR)IDB_BITMAP_PLANE); hMemDC2=::CreateCompatibleDC(hdc); plane.x=WNDWIDTH/2; plane.y=WNDHEIGHT-200; plane.heal=3; enemy.x=0; enemy.y=200; enemy.heal=30; for(int i=0; i<MAXBULLETS; i++) { bullet[i].heal=1; bullet[i].x=-1; bullet[i].y=-1; bullet[i].hbmp=hbmpBullet; } return TRUE; } void Render() { ::Rectangle(hMemDC, -1,-1, WNDWIDTH, WNDHEIGHT); DrawIconEx(hMemDC, 4, 6, hIcon, 12, 12, 0, NULL, DI_NORMAL); rc.right=20+enemy.heal*(300/30); FrameRect(hMemDC, &rc2, hbr); FillRect(hMemDC, &rc, hbr); SetTextColor(hMemDC, RGB(255,0,0)); if(plane.heal>0) { SelectObject(hMemDC2, plane.hbmp); BitBlt(hMemDC, plane.x, plane.y, 32, 32, hMemDC2, 0, 0, SRCCOPY); } else TextOut(hMemDC, 110, 20, "You loss! Retry-F1", 18); if(enemy.heal>0) { SelectObject(hMemDC2, enemy.hbmp); BitBlt(hMemDC, enemy.x, enemy.y, 32, 32, hMemDC2, 0, 0, SRCCOPY); } else TextOut(hMemDC, 110, 20, "You win! Retry-F1", 17); for(int i=0; i<MAXBULLETS; i++) { if(bullet[i].heal>0) { if(bullet[i].x!=-1 && bullet[i].y!=-1) { SelectObject(hMemDC2, hbmpBullet); BitBlt(hMemDC, bullet[i].x, bullet[i].y, 8, 7, hMemDC2, 0, 0, SRCCOPY); } } else { bullet[i].x=-1; bullet[i].y=-1; bullet[i].heal=1; } } BitBlt(hdc, 0, 0, WNDWIDTH, WNDHEIGHT,