（Visual C++）游戏开发笔记之十一：基础动画显示（四）排序贴图 - windows编程基础

f(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";
wcex.hIconSm = NULL;

return RegisterClassEx(&wcex);
}

//****初始化函数*************************************
// 加载位图并设定各初始值
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HBITMAP bmp;
hInst = hInstance;
int i;

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,10,10,640,480,true);
ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);

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

bmp = CreateCompatibleBitmap(hdc,640,480); //建立一个空位图并放入mdc中
SelectObject(mdc,bmp);

//加载各张恐龙跑动图及背景图，这里以0,1,2,3来代表恐龙的上，下，左，右移动
draPic[0] = (HBITMAP)LoadImage(NULL,"dra0.bmp",IMAGE_BITMAP,528,188,LR_LOADFROMFILE);
draPic[1] = (HBITMAP)LoadImage(NULL,"dra1.bmp",IMAGE_BITMAP,544,164,LR_LOADFROMFILE);
draPic[2] = (HBITMAP)LoadImage(NULL,"dra2.bmp",IMAGE_BITMAP,760,198,LR_LOADFROMFILE);
draPic[3] = (HBITMAP)LoadImage(NULL,"dra3.bmp",IMAGE_BITMAP,760,198,LR_LOADFROMFILE);
bg = (HBITMAP)LoadImage(NULL,"bg.bmp",IMAGE_BITMAP,640,480,LR_LOADFROMFILE);

//设定所有恐龙初始的贴图坐标都为（200,200），初始的移动方向都为向左。
for(i=0;i {
dra[i].dir = 3; //起始方向
dra[i].x = 200; //贴图的起始X坐标
dra[i].y = 200; //贴图的起始Y坐标
}

MyPaint(hdc);

return TRUE;
}

//气泡排序

void BubSort(int n)
{
int i,j;
bool f;
dragon tmp;

for(i=0;i {
f = false;
for(j=0;j {
if(dra[j+1].y < dra[j].y)
{
tmp = dra[j+1];
dra[j+1] = dra[j];
dra[j] = tmp;
f = true;
}
}
if(!f)
break;
}
}

//****自定义绘图函数*********************************
// 1.对窗口中跑动的恐龙进行排序贴图
// 2.恐龙贴图坐标修正
void MyPaint(HDC hdc)
{
int w,h,i;

if(picNum == 8)
picNum = 0;

//在mdc中先贴上背景图
SelectObject(bufdc,bg);
BitBlt(mdc,0,0,640,480,bufdc,0,0,SRCCOPY);

BubSort(draNum); //贴上恐龙图之前调用BubSort（）函数进行排序

//下面这个for循环，按照目前恐龙的移动方向dra[i].dir，选取对应的位图到bufdc中，并设定截切的大小。每一张要在窗口上出现的恐龙图案依次先在mdc上进行透明贴图的操作。
for(i=0;i {
SelectObject(bufdc,draPic[dra[i].dir]);
switch(dra[i].dir)
{
case 0:
w = 66;
h = 94;
break;
case 1:
w = 68;
h = 82;
break;
case 2:
w = 95;
h = 99;
break;
case 3:
w = 95;
h = 99;
break;
}
BitBlt(mdc,dra[i].x,dra[i].y,w,h,bufdc,picNum*w,h,SRCAND);
BitBlt(mdc,

（Visual C++）游戏开发笔记之十一：基础动画显示（四）排序贴图 (二)