[游戏模版15] Win32 飞机射击

>_<:Only give you the code,try to understand it!

>_<:picture resource

 #include <windows.h>
 // C 运行时头文件
 #include <stdlib.h>
 #include <cstdio>
 #include <malloc.h>
 #include <memory.h>
 #include <tchar.h>
 #include <string>

 //定义结构,飞机子弹
 struct BULLET{
     int x,y;
     bool exist;
 };

 // 全局变量:
 HINSTANCE hInst;                                // 当前实例

 HBITMAP bg,ship,bullet;//背景图，飞机图，子弹图
 HDC hdc,mdc,bufdc;
 HWND hWnd;
 int x,y,nowX,nowY;//鼠标坐标，飞机坐标（贴图坐标）
 int w=,bcount;//滚动背景所要剪切的宽度，子弹数目
 BULLET b[];//存储飞机发出的子弹

 // 此代码模块中包含的函数的前向声明:
 ATOM                MyRegisterClass(HINSTANCE hInstance);
 BOOL                InitInstance(HINSTANCE, int);
 LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);
 INT_PTR CALLBACK    About(HWND, UINT, WPARAM, LPARAM);
 void                MyPaint(HDC hdc);

 int APIENTRY _tWinMain(HINSTANCE hInstance,
                      HINSTANCE hPrevInstance,
                      LPTSTR    lpCmdLine,
                      int       nCmdShow){

     MSG msg;
     MyRegisterClass(hInstance);
     // 执行应用程序初始化:
     if (!InitInstance (hInstance, nCmdShow)){
         return FALSE;
     }
     // 主消息循环:
     while (GetMessage(&msg, NULL, , )){
         TranslateMessage(&msg);
         DispatchMessage(&msg);
     }
     return (int) msg.wParam;
 }

 //  函数: MyRegisterClass()
 //
 //  目的: 注册窗口类。
 ATOM MyRegisterClass(HINSTANCE hInstance){
     WNDCLASSEX wcex;

     wcex.cbSize = sizeof(WNDCLASSEX);

     wcex.style            = CS_HREDRAW | CS_VREDRAW;
     wcex.lpfnWndProc    = WndProc;
     wcex.cbClsExtra        = ;
     wcex.cbWndExtra        = ;
     wcex.hInstance        = hInstance;
     wcex.hIcon            = NULL;
     wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
     wcex.hbrBackground    = (HBRUSH)(COLOR_WINDOW+);
     wcex.lpszMenuName    = "Beautifulzzzz";
     wcex.lpszClassName    = "Beautifulzzzz";
     wcex.hIconSm        = NULL;

     return RegisterClassEx(&wcex);
 }

 //   函数: InitInstance(HINSTANCE, int)
 //
 //   目的: 保存实例句柄并创建主窗口
 //
 //   注释:
 //
 //        在此函数中，我们在全局变量中保存实例句柄并
 //        创建和显示主程序窗口。
 //        1.设定飞机的初始位置
 //        2.设定鼠标位置及隐藏
 //        3.设定鼠标光标移动区域
 //
 BOOL InitInstance(HINSTANCE hInstance, int nCmdShow){

    HBITMAP bmp;
    POINT pt,lt,rb;
    RECT rect;

    hInst = hInstance; // 将实例句柄存储在全局变量中

    hWnd = CreateWindow("Beautifulzzzz","Beautifulzzzz", WS_OVERLAPPEDWINDOW,
       CW_USEDEFAULT, , CW_USEDEFAULT, , NULL, NULL, hInstance, NULL);

    if (!hWnd)
    {
       return FALSE;
    }

    MoveWindow(hWnd,,,,,true);
    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

    hdc=GetDC(hWnd);
    mdc=CreateCompatibleDC(hdc);
    bufdc=CreateCompatibleDC(hdc);

    bmp=CreateCompatibleBitmap(hdc,,);
    SelectObject(mdc,bmp);

    bg=(HBITMAP)LoadImageA(NULL,"bg.bmp",IMAGE_BITMAP,,,LR_LOADFROMFILE);
    ship=(HBITMAP)LoadImageA(NULL,"ship.bmp",IMAGE_BITMAP,,,LR_LOADFROMFILE);
    bullet=(HBITMAP)LoadImageA(NULL,"bullet.bmp",IMAGE_BITMAP,,,LR_LOADFROMFILE);

    x=;
    y=;
    nowX=;
    nowY=;

    //设定鼠标光标位置
    pt.x=;
    pt.y=;
    ClientToScreen(hWnd,&pt);
    SetCursorPos(pt.x,pt.y);

    ShowCursor(false);//隐藏鼠标光标

    //限制鼠标光标移动区域
    GetClientRect(hWnd,&rect);
    lt.x=rect.left;
    lt.y=rect.top;
    rb.x=rect.right;
    rb.y=rect.bottom;
    ClientToScreen(hWnd,&lt);
    ClientToScreen(hWnd,&rb);
    rect.left=lt.x;
    rect.top=lt.y;
    rect.right=rb.x;
    rect.bottom=rb.y;
    ClipCursor(&rect);

    SetTimer(hWnd,,,NULL);
    MyPaint(hdc);

    return TRUE;
 }

 //
 //  函数: WndProc(HWND, UINT, WPARAM, LPARAM)
 //
 //  目的: 处理主窗口的消息。
 //
 //  WM_COMMAND    - 处理应用程序菜单
 //  WM_PAINT    - 绘制主窗口
 //  WM_DESTROY    - 发送退出消息并返回
 //
 LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){
     int i;
     int wmId, wmEvent;
     PAINTSTRUCT ps;

     switch (message)
     {
     case WM_KEYDOWN:          //按下消息
         if(wParam==VK_ESCAPE) //按下[esc]
             PostQuitMessage();
         break;
     case WM_LBUTTONDOWN:      //单击鼠标左键消息
         for(i=;i<;i++)
         {
             if(!b[i].exist)
             {
                 b[i].x=nowX;
                 b[i].y=nowY+;
                 b[i].exist=true;
                 bcount++;
                 break;
             }
         }
     case WM_MOUSEMOVE:
         x=LOWORD(lParam);    //取得鼠标x坐标
         if(x>)
             x=;
         else if(x<)
             x=;

         y=HIWORD(lParam);
         if(y>)
             y=;
         else if(y<)
             y=;

         break;
     case WM_TIMER:
         A:MyPaint(hdc);
         break;
     case WM_PAINT:
         hdc = BeginPaint(hWnd, &ps);
         // TODO: 在此添加任意绘图代码...
         EndPaint(hWnd, &ps);
         break;
     case WM_DESTROY:
         ClipCursor(NULL);//回复鼠标移动区域

         DeleteDC(mdc);
         DeleteDC(bufdc);
         DeleteObject(bg);
         DeleteObject(bullet);
         DeleteObject(ship);
         ReleaseDC(hWnd,hdc);

         PostQuitMessage();
         break;
     default:
         return DefWindowProc(hWnd, message, wParam, lParam);
     }
     return ;
 }

 //1.设定飞机坐标并进行贴图
 //2.设定所有子弹坐标并进行贴图
 //3.显示真正的鼠标坐标所在的坐标
 void MyPaint(HDC hdc){
     char str[]="";
     int i;

     //贴上背景图
     SelectObject(bufdc,bg);
     BitBlt(mdc,,,w,,bufdc,-w,,SRCCOPY);
     BitBlt(mdc,w,,-w,,bufdc,,,SRCCOPY);

     //飞机坐标向鼠标坐标位置靠近
     if(nowX<x){
         nowX+=;
         if(nowX>x)
             nowX=x;
     }else{
         nowX-=;
         if(nowX<x)
             nowX=x;
     }

     if(nowY<y){
         nowY-=;
         if(nowY<y)
             nowY=y;
     }else{
         nowY+=;
         if(nowY>y)
             nowY=y;
     }

     //贴上飞机图
     SelectObject(bufdc,ship);
     BitBlt(mdc,nowX,nowY,,,bufdc,,,SRCAND);
     BitBlt(mdc,nowX,nowY,,,bufdc,,,SRCPAINT);

     SelectObject(bufdc,bullet);
     if(bcount!=)
         for(i=;i<;i++)
             if(b[i].exist){
                 //贴上子弹图
                 BitBlt(mdc,b[i].x,b[i].y,,,bufdc,,,SRCAND);
                 BitBlt(mdc,b[i].x,b[i].y,,,bufdc,,,SRCPAINT);

                 b[i].x-=;
                 if(b[i].x<){
                     bcount--;
                     b[i].exist=false;
                 }
             }

     //显示鼠标坐标
     sprintf(str,"x坐标:  %d   ",x);
     TextOutA(mdc,,,str,strlen(str));
     sprintf(str,"y坐标:  %d   ",y);
     TextOutA(mdc,,,str,strlen(str));

     BitBlt(hdc,,,,,mdc,,,SRCCOPY);

     w+=;
     if(w==)
         w=;
 }