標(biāo)題: 《駭客帝國(guó)》中數(shù)字雨的代碼 [打印本頁(yè)]
作者: liuyang 時(shí)間: 2011-9-6 04:05
標(biāo)題: 《駭客帝國(guó)》中數(shù)字雨的代碼
《駭客帝國(guó)》中電腦程序代碼看起來(lái)很神秘，，但是真的是嗎，，一起來(lái)，你也可以，方法是在VC++6.0中建立一個(gè)Win32 Console Application工程再在工程樹(shù)下建立一個(gè)C++ Source File文件，將下面的程序（全部）復(fù)制粘貼進(jìn)去保存并編譯，你看到了什么~~~~~~~~~~~
#include <windows.h>
#define ID_TIMER 1
#define STRMAXLEN 25 //一個(gè)顯示列的最大長(zhǎng)度
#define STRMINLEN 8 //一個(gè)顯示列的最小長(zhǎng)度
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
//////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////
typedef struct tagCharChain //整個(gè)當(dāng)作屏幕的一個(gè)顯示列,這是個(gè)雙向列表
{
struct tagCharChain *prev; //鏈表的前個(gè)元素
TCHAR ch; //一個(gè)顯示列中的一個(gè)字符
struct tagCharChain *next; //鏈表的后個(gè)元素
}CharChain, *pCharChain;
typedef struct tagCharColumn
{
CharChain *head, *current, *point;
int x, y, iStrLen; //顯示列的開(kāi)始顯示的x,y坐標(biāo),iStrLen是這個(gè)列的長(zhǎng)度
int iStopTimes, iMustStopTimes; //已經(jīng)停滯的次數(shù)和必須停滯的次數(shù),必須停滯的次數(shù)是隨機(jī)的
}CharColumn, *pCharColumn;
int main(HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("matrix") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if(!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("此程序必須運(yùn)行在NT下!"), szAppName, MB_ICONERROR) ;
return 0;
}
hwnd = CreateWindow (szAppName, NULL,
WS_DLGFRAME | WS_THICKFRAME | WS_POPUP,
0, 0,
GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN),
NULL, NULL, hInstance,
NULL) ;
ShowWindow (hwnd, SW_SHOWMAXIMIZED) ; //最大化顯示
UpdateWindow (hwnd) ;
ShowCursor(FALSE); //隱藏鼠標(biāo)光標(biāo)
srand ((int) GetCurrentTime ()) ; //初始化隨機(jī)數(shù)發(fā)生器
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
ShowCursor(TRUE); //顯示鼠標(biāo)光標(biāo)
return msg.wParam ;
}
TCHAR randomChar() //隨機(jī)字符產(chǎn)生函數(shù)
{
return (TCHAR)(rand()%(126-33)+33); //33到126之間
}
int init(CharColumn *cc, int cyScreen, int x) //初始化
{
int j;
cc->iStrLen = rand()%(STRMAXLEN-STRMINLEN) + STRMINLEN; //顯示列的長(zhǎng)度
cc->x = x+3 ; //顯示列的開(kāi)始顯示的x坐標(biāo)
cc->y =rand()%3?rand()%cyScreen:0; //顯示列的開(kāi)始顯示的y坐標(biāo)
cc->iMustStopTimes = rand()%6 ;
cc->iStopTimes = 0 ;
cc->head = cc->current =
(pCharChain)calloc(cc->iStrLen, sizeof(CharChain)); //生成顯示列
for(j=0; j<cc->iStrLen-1; j++)
{
cc->current->prev = cc->point; //cc->point一個(gè)顯示列的前個(gè)元素
cc->current->ch = '\0';
cc->current->next = cc->current+1; //cc->current+1一個(gè)顯示列的后個(gè)元素
cc->point = cc->current++; //cc->point = cc->current; cc->current++;
}
cc->current->prev = cc->point; //最后一個(gè)節(jié)點(diǎn)
cc->current->ch = '\0';
cc->current->next = cc->head;
cc->head->prev = cc->current; //頭節(jié)點(diǎn)的前一個(gè)為此鏈的最后一個(gè)元素
cc->current = cc->point = cc->head; //free掉申請(qǐng)的內(nèi)存要用current當(dāng)參數(shù)
cc->head->ch = randomChar(); // 對(duì)鏈表頭的 元素填充
return 0;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
//ctn 用來(lái)確定一個(gè)顯示鏈?zhǔn)欠?向下前進(jìn),如果等待次數(shù)超過(guò)必須等待的次數(shù),ctn就代表要向下前進(jìn)
int i, j, temp, ctn; //j為一個(gè)顯示鏈中除鏈表頭外的在屏幕上顯示的y坐標(biāo),temp綠色過(guò)度到黑色之用
static HDC hdcMem;
HFONT hFont;
static HBITMAP hBitmap;
static int cxScreen, cyScreen; //屏幕的寬度 高度.
static int iFontWidth=10, iFontHeight=15, iColumnCount; //字體的寬度 高度, 列數(shù)
static CharColumn *ccChain;
switch (message)
{
case WM_CREATE:
cxScreen = GetSystemMetrics(SM_CXSCREEN) ; //屏幕寬度
cyScreen = GetSystemMetrics(SM_CYSCREEN) ;
SetTimer (hwnd, ID_TIMER, 10, NULL) ;
hdc = GetDC(hwnd);
hdcMem = CreateCompatibleDC(hdc);
hBitmap = CreateCompatibleBitmap(hdc, cxScreen, cyScreen);
SelectObject(hdcMem, hBitmap);
ReleaseDC(hwnd, hdc);
//創(chuàng)建字體
hFont = CreateFont(iFontHeight, iFontWidth-5, 0, 0, FW_BOLD, 0, 0, 0,
DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DRAFT_QUALITY, FIXED_PITCH | FF_SWISS, TEXT("Fixedsys"));
SelectObject(hdcMem, hFont);
DeleteObject (hFont) ;
SetBkMode(hdcMem, TRANSPARENT); //設(shè)置背景模式為 透明
iColumnCount = cxScreen/(iFontWidth*3/2); //屏幕所顯示字母雨的列數(shù)
ccChain = (pCharColumn)calloc(iColumnCount, sizeof(CharColumn));
for(i=0; i<iColumnCount; i++)
{
init(ccChain+i, cyScreen, (iFontWidth*3/2)*i);
}
return 0 ;
case WM_TIMER:
hdc = GetDC(hwnd);
PatBlt (hdcMem, 0, 0, cxScreen, cyScreen, BLACKNESS) ; //將內(nèi)存設(shè)備映像刷成黑色
for(i=0; i<iColumnCount; i++)
{
ctn = (ccChain+i)->iStopTimes++ > (ccChain+i)->iMustStopTimes;
//
(ccChain+i)->point = (ccChain+i)->head; //point用于遍歷整個(gè)顯示列
//第一個(gè)字符顯示為 白色
SetTextColor(hdcMem, RGB(255, 255, 255));
TextOut(hdcMem, (ccChain+i)->x, (ccChain+i)->y, &((ccChain+i)->point->ch), 1);
j = (ccChain+i)->y;
(ccChain+i)->point = (ccChain+i)->point->next;
//遍歷整個(gè)顯示列,將這個(gè)顯示列里的字符從下往上顯示
temp = 0 ; //temp綠色過(guò)度到黑色之用
while((ccChain+i)->point != (ccChain+i)->head && (ccChain+i)->point->ch)
{
SetTextColor(hdcMem, RGB(0, 255-(255*(temp++)/(ccChain+i)->iStrLen), 0));
TextOut(hdcMem, (ccChain+i)->x, j-=iFontHeight, &((ccChain+i)->point->ch), 1);
(ccChain+i)->point = (ccChain+i)->point->next;
}
if(ctn)
(ccChain+i)->iStopTimes = 0 ;
else continue;
(ccChain+i)->y += iFontHeight; //下次開(kāi)始顯示的y坐標(biāo) 為當(dāng)前的y坐標(biāo)加上 一個(gè)字符的高度
//如果開(kāi)始顯示的y坐標(biāo)減去 整個(gè)顯示列的長(zhǎng)度超過(guò)了屏幕的高度
if( (ccChain+i)->y-(ccChain+i)->iStrLen*iFontHeight > cyScreen)
{
free( (ccChain+i)->current );
init(ccChain+i, cyScreen, (iFontWidth*3/2)*i);
}
//鏈表的頭 為此鏈表的前個(gè)元素,因?yàn)橄麓伍_(kāi)始顯示的時(shí)候 就相當(dāng)與在整個(gè)顯示列的開(kāi)頭添加個(gè)元素,然后在開(kāi)始往上顯示
(ccChain+i)->head = (ccChain+i)->head->prev;
(ccChain+i)->head->ch = randomChar();
}
BitBlt(hdc, 0, 0, cxScreen, cyScreen, hdcMem, 0, 0, SRCCOPY);
ReleaseDC(hwnd, hdc);
return 0;
case WM_RBUTTONDOWN:
KillTimer (hwnd, ID_TIMER) ;
return 0;
case WM_RBUTTONUP:
SetTimer (hwnd, ID_TIMER, 10, NULL) ;
return 0;
//處理善后工作
case WM_KEYDOWN:
case WM_LBUTTONDOWN:
case WM_DESTROY:
KillTimer (hwnd, ID_TIMER) ;
DeleteObject(hBitmap);
DeleteDC(hdcMem);
for(i=0; i<iColumnCount; i++)
{
free( (ccChain+i)->current );
}
free(ccChain);
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
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