010--VS2013 C++ 平面地图贴图

先准备好地图的小图片:



//全局变量
HDC mdc;
HBITMAP fullmap;
const int rows = 8, cols = 8;

//--------------------------------------------InitInstance() 函数----------------------------------------------
//加载资源
//-------------------------------------------------------------------------------------------------------------
BOOL InitInstance(HINSTANCE hInstance, int nShowCmd)
{
HWND hwnd;
HDC hdc, tmpdc;

//创建窗口第三步:正式创建窗口
//创建窗口函数
hwnd = CreateWindow("GameClass", WINDOW_TITLE, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);
if (!hwnd)
{
return FALSE;
}
//创建窗口第四步:窗口的移动,显示和更新
MoveWindow(hwnd, 250, 80, WINDOW_WIDTH, WINDOW_HEIGHT, true);//调整窗口显示时的位置及窗口的大小
ShowWindow(hwnd, nShowCmd);//设定显示窗口时的状态
UpdateWindow(hwnd);//将窗口绘制于显示设备上

int mapIndex[rows * cols] =
{
0, 1, 2, 2, 0, 1, 0, 1,
0, 1, 2, 0, 0, 0, 1, 1,
2, 0, 0, 0, 0, 0, 0, 1,
2, 0, 0, 1, 1, 0, 2, 2,
2, 2, 0, 0, 2, 2, 0, 0,
0, 2, 2, 2, 2, 0, 0, 1,
0, 2, 2, 2, 2, 2, 1, 1
};
//DC
hdc = GetDC(hwnd);
mdc = CreateCompatibleDC(hdc);
tmpdc = CreateCompatibleDC(hdc);
//建立一空白的位图,其宽与高分别为"行数*图块宽" 与 "列数*图块高"
fullmap = CreateCompatibleBitmap(hdc, cols * 50, rows * 50);
//将fullmap存入mdc中
SelectObject(mdc, fullmap);

HBITMAP map[3];
char mapname[20] = "";

//加载各图块图像
for (int i = 0; i < 3; i++)
{
wsprintf(mapname, "map%d.bmp", i);
map[i] = (HBITMAP)LoadImage(NULL, mapname, IMAGE_BITMAP, 50, 50, LR_LOADFROMFILE);
}

//按照mapIndex数组的定义取出对应的图块,进行地图拼接
for (int i = 0; i < rows * cols; i++)
{
int x, y;
SelectObject(tmpdc, map[mapIndex[i]]);
//i / cols;//求列编号
//i % cols;//求行编号
x = i % cols * 50;//求贴图x坐标
y = i / cols * 50;//求贴图y坐标

BitBlt(mdc, x, y, 50, 50, tmpdc, 0, 0, SRCCOPY);
}

MyPaint(hdc);

ReleaseDC(hwnd, hdc);
DeleteDC(tmpdc);

return TRUE;
}

//--------------------------------------------MyPaint() 函数---------------------------------------------------
//绘制图形
//-------------------------------------------------------------------------------------------------------------
void MyPaint(HDC hdc)
{
SelectObject(mdc, fullmap);
BitBlt(hdc, 10, 10, cols * 50, rows * 50, mdc, 0, 0, SRCCOPY);
}

//--------------------------------------------Game_CleanUp() 函数----------------------------------------------
//资源清理函数,在此函数中进行退出前的资源的清理工作
//-------------------------------------------------------------------------------------------------------------
BOOL Game_CleanUp(HWND hwnd)
{
DeleteDC(mdc);
DeleteObject(fullmap);
return TRUE;
}

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