贪吃蛇（版本1.0还有bug，但是基本能使了）

</pre><pre code_snippet_id="1773311" snippet_file_name="blog_20160720_2_6912133" name="code" class="cpp"></pre><pre code_snippet_id="1773311" snippet_file_name="blog_20160720_2_6912133" name="code" class="cpp">

.h  窗体内运动范围为红线内的

630*350，一个单元是10*10

// G716Dlg.h : 头文件//#pragma once// CG716Dlg 对话框class CG716Dlg : public CDialogEx{// 构造public:CG716Dlg(CWnd* pParent = NULL);// 标准构造函数// 对话框数据enum { IDD = IDD_G716_DIALOG };protected:virtual void DoDataExchange(CDataExchange* pDX);// DDX/DDV 支持// 实现protected:HICON m_hIcon;// 生成的消息映射函数virtual BOOL OnInitDialog();afx_msg void OnSysCommand(UINT nID, LPARAM lParam);afx_msg void OnPaint();afx_msg HCURSOR OnQueryDragIcon();DECLARE_MESSAGE_MAP()public:afx_msg void OnBnClickedButton1();afx_msg void OnTimer(UINT_PTR nIDEvent);int mtime;int speed;void cell(int x,int y);void clearcell(int x,int y);int positionx;int positiony;int number;BOOL PreTranslateMessage(MSG* pMsg);int direction;CPoint food();CPoint foodposition;CPoint headposition;CPoint tailposition;CPoint snakebody[20];//CPoint temppoint;int length;//snake's lengthvoid snakemove(int direc);int eaten;void drawedge();int failtest();};

.cpp

// G716Dlg.cpp : 实现文件//#include "stdafx.h"#include "G716.h"#include "G716Dlg.h"#include "afxdialogex.h"#ifdef _DEBUG#define new DEBUG_NEW#endif// 用于应用程序“关于”菜单项的 CAboutDlg 对话框class CAboutDlg : public CDialogEx{public:CAboutDlg();// 对话框数据enum { IDD = IDD_ABOUTBOX };protected:virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持// 实现protected:DECLARE_MESSAGE_MAP()};CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD){}void CAboutDlg::DoDataExchange(CDataExchange* pDX){CDialogEx::DoDataExchange(pDX);}BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)END_MESSAGE_MAP()// CG716Dlg 对话框CG716Dlg::CG716Dlg(CWnd* pParent /*=NULL*/): CDialogEx(CG716Dlg::IDD, pParent){m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);}void CG716Dlg::DoDataExchange(CDataExchange* pDX){CDialogEx::DoDataExchange(pDX);}BEGIN_MESSAGE_MAP(CG716Dlg, CDialogEx)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(IDC_BUTTON1, &CG716Dlg::OnBnClickedButton1)ON_WM_TIMER()END_MESSAGE_MAP()// CG716Dlg 消息处理程序BOOL CG716Dlg::OnInitDialog(){CDialogEx::OnInitDialog();// 将“关于...”菜单项添加到系统菜单中。// IDM_ABOUTBOX 必须在系统命令范围内。ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL){BOOL bNameValid;CString strAboutMenu;bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);ASSERT(bNameValid);if (!strAboutMenu.IsEmpty()){pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);}}// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动//  执行此操作SetIcon(m_hIcon, TRUE);// 设置大图标SetIcon(m_hIcon, FALSE);// 设置小图标// TODO: 在此添加额外的初始化代码mtime = 0;length = 0;return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE}void CG716Dlg::OnSysCommand(UINT nID, LPARAM lParam){if ((nID & 0xFFF0) == IDM_ABOUTBOX){CAboutDlg dlgAbout;dlgAbout.DoModal();}else{CDialogEx::OnSysCommand(nID, lParam);}}// 如果向对话框添加最小化按钮，则需要下面的代码//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，//  这将由框架自动完成。void CG716Dlg::OnPaint(){if (IsIconic()){CPaintDC dc(this); // 用于绘制的设备上下文SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);// 使图标在工作区矩形中居中int cxIcon = GetSystemMetrics(SM_CXICON);int cyIcon = GetSystemMetrics(SM_CYICON);CRect rect;GetClientRect(&rect);int x = (rect.Width() - cxIcon + 1) / 2;int y = (rect.Height() - cyIcon + 1) / 2;// 绘制图标dc.DrawIcon(x, y, m_hIcon);}else{CDialogEx::OnPaint();}}//当用户拖动最小化窗口时系统调用此函数取得光标//显示。HCURSOR CG716Dlg::OnQueryDragIcon(){return static_cast<HCURSOR>(m_hIcon);}void CG716Dlg::OnBnClickedButton1(){// TODO: 在此添加控件通知处理程序代码GetDlgItem(IDC_BUTTON1)->ShowWindow(SW_HIDE);SetTimer(1,1000,NULL);speed = 300;SetTimer(2,speed,NULL);drawedge();length = 2;//initdirection = 1;//uppositionx = 30;positiony = 15;snakebody[0].x = positionx;snakebody[0].y = positiony;cell(snakebody[0].x , snakebody[0].y);//the first cellsnakebody[1].x = positionx;snakebody[1].y = positiony-1;cell(snakebody[1].x , snakebody[1].y);//the second cellsnakebody[length].x = positionx;snakebody[length].y = positiony-2;cell(snakebody[2].x , snakebody[2].y);//the third cellheadposition.x = snakebody[0].x;headposition.y = snakebody[0].y;tailposition.x = snakebody[length].x;tailposition.y = snakebody[length].y;foodposition = food();}void CG716Dlg::OnTimer(UINT_PTR nIDEvent){// TODO: 在此添加消息处理程序代码和/或调用默认值CString str;switch(nIDEvent){case 1:mtime++;str.Format(_T("%d min,%d s"),mtime/60,mtime%60);SetDlgItemText(IDC_STATIC,str);break;case 2:drawedge();cell(foodposition.x,foodposition.y);snakemove(direction);//exam whether meet the foodif(headposition.x == foodposition.x && headposition.y == foodposition.y){eaten = 1;length++;speed -= 25;SetTimer(2,speed,NULL);}if(failtest()){KillTimer(1);KillTimer(2);AfxMessageBox(_T("Sorry, you are failed!"));GetDlgItem(IDC_BUTTON1)->ShowWindow(SW_SHOW);CString stri;stri.Format(_T("restart?"));SetDlgItemText(IDC_BUTTON1,stri);}break;}CDialogEx::OnTimer(nIDEvent);}void CG716Dlg::cell(int x,int y){y = y*10 + 50;x = x*10;CRect rect;GetClientRect(rect);CClientDC aDC(this);CPen pen(PS_SOLID,1,RGB(0,0,0));CPen* pold=aDC.SelectObject(&pen);//控制颜色CPoint mp;//画线mp.x = x;mp.y = y;aDC.MoveTo(mp);mp.x = x+10;mp.y = y;aDC.LineTo(mp);//ABmp.x = x+10;mp.y = y;aDC.MoveTo(mp);mp.x = x+10;mp.y = y+10;aDC.LineTo(mp);//BCmp.x = x+10;mp.y = y+10;aDC.MoveTo(mp);mp.x = x;mp.y = y+10;aDC.LineTo(mp);//BDmp.x = x;mp.y = y+10;aDC.MoveTo(mp);mp.x = x;mp.y = y;aDC.LineTo(mp);//ABaDC.SelectObject(pold);//控制颜色}void CG716Dlg::clearcell(int x,int y){y = y*10 + 50;x = x*10;CRect rect;GetClientRect(rect);CClientDC aDC(this);CPen pen(PS_SOLID,1,RGB(240,240,240));CPen* pold=aDC.SelectObject(&pen);//控制颜色CPoint mp;//画线mp.x = x;mp.y = y;aDC.MoveTo(mp);mp.x = x+10;mp.y = y;aDC.LineTo(mp);//ABmp.x = x+10;mp.y = y;aDC.MoveTo(mp);mp.x = x+10;mp.y = y+10;aDC.LineTo(mp);//BCmp.x = x+10;mp.y = y+10;aDC.MoveTo(mp);mp.x = x;mp.y = y+10;aDC.LineTo(mp);//BDmp.x = x;mp.y = y+10;aDC.MoveTo(mp);mp.x = x;mp.y = y;aDC.LineTo(mp);//ABaDC.SelectObject(pold);//控制颜色}//按键响应函数BOOL CG716Dlg::PreTranslateMessage(MSG* pMsg){    if(pMsg->message == WM_KEYDOWN)    {          switch(pMsg->wParam)        {        case VK_DOWN:direction = 1;break;        case VK_UP:direction = 0;break;case VK_LEFT:direction = 3;break;case VK_RIGHT:direction = 2;break;        }//return TRUE;    }return CDialog::PreTranslateMessage(pMsg);}CPoint CG716Dlg::food(){eaten = 0;int fx = rand()%63;int fy = rand()%35;cell(fx,fy);CPoint point;point.x = fx;point.y = fy;return point;}void CG716Dlg::snakemove(int direc){if(eaten){eaten = 0;foodposition = food();}elseclearcell(tailposition.x,tailposition.y);for(int i = length ; i>0 ; i--)//update the bodysnakebody[i] = snakebody[i-1];//keep the headtailposition.x = snakebody[length].x;tailposition.y = snakebody[length].y;switch (direc){case 0://uppositionx = headposition.x;positiony = headposition.y - 1;cell(positionx,positiony);snakebody[0].x = positionx;snakebody[0].y = positiony;headposition.x = snakebody[0].x;headposition.y = snakebody[0].y;break;case 1://backpositionx = headposition.x;positiony = headposition.y + 1;cell(positionx,positiony);snakebody[0].x = positionx;snakebody[0].y = positiony;headposition.x = snakebody[0].x;headposition.y = snakebody[0].y;break;case 2://rightpositionx = headposition.x + 1;positiony = headposition.y;cell(positionx,positiony);snakebody[0].x = positionx;snakebody[0].y = positiony;headposition.x = snakebody[0].x;headposition.y = snakebody[0].y;break;case 3://leftpositionx = headposition.x - 1;positiony = headposition.y;cell(positionx,positiony);snakebody[0].x = positionx;snakebody[0].y = positiony;headposition.x = snakebody[0].x;headposition.y = snakebody[0].y;break;}cell(snakebody[length].x,snakebody[length].y);}void CG716Dlg::drawedge(){CRect rect;GetClientRect(rect);CClientDC aDC(this);CPen pen(PS_SOLID,1,RGB(255,0,0));CPen* pold=aDC.SelectObject(&pen);//控制颜色CPoint mp;//画线mp.x = 0;mp.y = 48;aDC.MoveTo(mp);mp.x = rect.right;aDC.LineTo(mp);mp.x = 0;mp.y = 49;aDC.MoveTo(mp);mp.x = rect.right;aDC.LineTo(mp);mp.x = 0;mp.y = 50;aDC.MoveTo(mp);mp.x = rect.right;aDC.LineTo(mp);mp.x = 630;mp.y = 50;aDC.MoveTo(mp);mp.y = rect.bottom;aDC.LineTo(mp);mp.x = 630+1;mp.y = 50;aDC.MoveTo(mp);mp.y = rect.bottom;aDC.LineTo(mp);mp.x = 630+2;mp.y = 50;aDC.MoveTo(mp);mp.y = rect.bottom;aDC.LineTo(mp);mp.x = 0;mp.y = 400;aDC.MoveTo(mp);mp.x = rect.right;aDC.LineTo(mp);mp.x = 0;mp.y = 401;aDC.MoveTo(mp);mp.x = rect.right;aDC.LineTo(mp);mp.x = 0;mp.y = 402;aDC.MoveTo(mp);mp.x = rect.right;aDC.LineTo(mp);aDC.SelectObject(pold);//控制颜色}int CG716Dlg::failtest(){int fail;if(headposition.x < 0 || headposition.y > 63 || headposition.y < 0 || headposition.y > 35)fail = 1;elsefail = 0;for(int i = 1; i<=length; i++){if(snakebody[0] == snakebody[i]){fail = 1;break;}}return fail;}