游戏基础010---单一背景滚动

源码下载：/2012/0118/20120118081046132.rar

/************************************************************************/
/*
单一背景滚动：利用一张相当大的背景图，当游戏进行的时候，随着画面中人物的
移动，背景的现实区域也跟着移动。只要在每次背景画面更新时改变要显示到窗口
上的区域就可以了
*/
/************************************************************************//
#include "stdafx.h"

//全局变量声明
HINSTANCE hInst;
HBITMAP map;
HDC     hdc,mdc;
HWND    hWnd;
DWORD   tPre,tNow;
int     x=0,y=0;

//全局函数
void MyPaint(HDC);
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);

//****程序入口**************************************
int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    MSG msg;

    MyRegisterClass(hInstance);

    //运行初始化函数
    if (!InitInstance (hInstance, nCmdShow))
    {
        return FALSE;
    }

    //游戏循环
    PeekMessage(&msg, NULL, 0, 0, PM_REMOVE);
    while (msg.message != WM_QUIT)
    {
        if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
       else
        {
            tNow = GetTickCount();
            if (tNow-tPre >= 10)
            {
                MyPaint(hdc);
            }
        }

    }

    return msg.wParam;
}

//****定义及注册窗口类别函数*************************
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          = NULL;
    wcex.hCursor        = NULL;
    wcex.hCursor        = LoadCursor(NULL, IDC_ARROW);
    wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName   = NULL;
    wcex.lpszClassName = "canvas"; //类别名称
    wcex.hIconSm        = NULL;

    return RegisterClassEx(&wcex);
}

//****初始化*************************************
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
    char filename[20] = "";
    int i;

    hInst = hInstance;

    hWnd = CreateWindow("canvas", "绘图窗口" , WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

    if (!hWnd)
    {
        return FALSE;
    }

    MoveWindow(hWnd,10,10,600,450,true);
    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

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

   map = (HBITMAP)LoadImage(NULL,"map.bmp",IMAGE_BITMAP,1548,1129,LR_LOADFROMFILE);

    SelectObject(mdc,map);

    MyPaint(hdc);

    return TRUE;
}
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/************************************************************************/
/*
按背景图剪裁左上角坐标经行贴图
*/
/************************************************************************/
void MyPaint(HDC hdc)
{
    BitBlt(hdc,0,0,640,480,mdc,x,y,SRCCOPY);
    tPre = GetTickCount();
}

//****回调函数***********************************
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{

    switch (message)
    {
    case WM_KEYDOWN:                 //按键消息
        switch (wParam)
        {
        case VK_UP:              //按下向上箭头
            y -= 20;
            if(y < 0)

补充：综合编程 , 其他综合 ,