学步园

   经过两天时间的编写, 这个小游戏终于可以玩一下了, 不过还没有达到大家熟悉的面孔.

以下为全部代码, 使用VC++6.0,  Win32 Application工程编译通过.

/*<br /> include files and constant variables here.<br /> */</p> <p>#ifndef _RESOURCE_H_<br /> #define _RESOURCE_H_</p> <p>#include <time.h><br /> #include <windows.h><br /> #include <stdio.h></p> <p>inline int RandInt(int x, int y) {return rand() % (y - x +1) +x; }<br /> bool block(HDC surface, int x, int y);<br /> bool circle(HDC surface, int x, int y, int radius);</p> <p>#endif //_RESOURCE_H_

/*<br /> Link list class declarations.<br /> */</p> <p>#ifndef _LIST_H_<br /> #define _LIST_H_</p> <p>#include "resource.h"</p> <p>typedef struct {<br /> int xPos;<br /> int yPos;<br /> }ElemType;</p> <p>typedef struct SNode{<br /> ElemType data;<br /> struct SNode* pNext;<br /> }Node;</p> <p>class CList{<br /> public:<br /> CList();<br /> bool Insert(int iPos, ElemType elem);<br /> bool Assign(int iPos, ElemType elem);<br /> bool GetElem(int iPos, ElemType& elem) const;<br /> bool GetHead(ElemType& elem) const;<br /> bool SetHead(ElemType elem);<br /> bool isEmpty() const; // if list is empty return true<br /> bool Traverse(HDC hDC) const; // traverse the link list<br /> int itsLength() const; // get link list's length<br /> ~CList();<br /> private:<br /> Node* head;<br /> };</p> <p>#endif // _LIST_H_

/*<br /> snake class declaration.<br /> */</p> <p>#ifndef _SNAKE_H_<br /> #define _SNAKE_H_</p> <p>#include "resource.h"<br /> #include "list.h"</p> <p>class CSnake{<br /> public:<br /> CSnake();<br /> void run();<br /> bool eat();<br /> bool north();<br /> bool south();<br /> bool west();<br /> bool east();<br /> bool collision();<br /> bool draw(HDC surface);<br /> ~CSnake();<br /> private:<br /> int iSpeed;<br /> int iScore;<br /> int iDirection; // 1: north; 2: south; 3: west; 4: east<br /> bool bStop;<br /> CList segment;<br /> ElemType food;<br /> };</p> <p>#endif // _SNAKE_H_

/*<br /> some useful functions.<br /> */</p> <p>#include "resource.h"</p> <p>//</p> <p>/*<br /> Parameter : HDC, int, int<br /> Return : true or false<br /> Description : draw a rectangle in the position : (x,y)<br /> */<br /> bool block(HDC surface, int x, int y) {<br /> int iSize = 10; // set block size<br /> RECT rect;</p> <p> rect.left = x * iSize;<br /> rect.top = y * iSize;<br /> rect.right = rect.left + iSize;<br /> rect.bottom = rect.top + iSize;</p> <p> Rectangle(surface, rect.left, rect.top, rect.right, rect.bottom);</p> <p> return true;</p> <p>} // block</p> <p>/*<br /> Parameter : HDC, int , int , int<br /> Return : true or false<br /> Description : draw a circle in the (x,y) position.<br /> */<br /> bool circle(HDC surface, int x, int y, int radius) {<br /> int iSize = 10;</p> <p> x *= iSize;<br /> y *= iSize;</p> <p> x += 5;<br /> y += 5;</p> <p> HBRUSH hBrush;<br /> HBRUSH hOldBrush;</p> <p> hBrush = CreateSolidBrush(RGB(255, 0, 0));<br /> hOldBrush = (HBRUSH)SelectObject(surface, hBrush);</p> <p> Ellipse(surface, x - radius, y - radius, x + radius, y + radius);</p> <p> SelectObject(surface, hOldBrush);<br /> // if not delete object, application will stop...<br /> DeleteObject(hBrush);</p> <p> return true;<br /> } // circle

/*<br /> CList class definition.<br /> */</p> <p>#include "list.h"</p> <p>/*<br /> Parameter : none<br /> Return : none<br /> Description : class default constructor.<br /> */<br /> CList::CList() {</p> <p> head = new Node;<br /> head->pNext = NULL;</p> <p>} // default constructor</p> <p>/*<br /> Parameter : int, ElemType<br /> Return : true or false<br /> Description : insert an element in the iPos.<br /> */<br /> bool CList::Insert(int iPos, ElemType elem) {<br /> int i = 0;<br /> Node* p = head;<br /> Node* q = new Node;</p> <p> // search for the destination<br /> while (p && i < iPos - 1) {<br /> p = p->pNext;<br /> i++;<br /> }</p> <p> if (!p || i > iPos - 1) {<br /> MessageBox(NULL, "less than or more the list length...", "List insert", MB_OK);</p> <p> return false;<br /> }</p> <p> // do insert action<br /> q->data = elem;<br /> q->pNext = p->pNext;<br /> p->pNext = q;</p> <p> return true;<br /> } // Insert</p> <p>/*<br /> Parameter : int, ElemType<br /> Return : true or false<br /> Description : get an element int the iPos.<br /> */<br /> bool CList::GetElem(int iPos, ElemType& elem) const {<br /> int i = 0;<br /> Node* p = head->pNext;</p> <p> if (iPos < 1 || iPos > itsLength()) {<br /> MessageBox(NULL, "wrong position in GetElem function!", "snake game", MB_OK);<br /> return false;<br /> }</p> <p> // search for the destination<br /> while (p && i < iPos - 1) {<br /> p = p->pNext;<br /> i++;<br /> }</p> <p> if (!p || i > iPos - 1) {<br /> MessageBox(NULL, "less than or more the list length...", "List insert", MB_OK);</p> <p> return false;<br /> }</p> <p> elem = p->data;</p> <p> return true;<br /> } // Delete</p> <p>/*<br /> Parameter : ElemType&<br /> Return : true or false<br /> Description : get list head: last element;<br /> */<br /> bool CList::GetHead(ElemType& elem) const {</p> <p> int iLast = itsLength();</p> <p> if (GetElem(iLast, elem)) {<br /> return true;<br /> }<br /> else {<br /> return false;<br /> }</p> <p>} // GetHead</p> <p>/*<br /> Parameter : ElemType<br /> Return : true or false<br /> Description : set head element in the list.<br /> */<br /> bool CList::SetHead(ElemType elem) {</p> <p> int iLast = itsLength();</p> <p> if (Assign(iLast, elem)) {<br /> return true;<br /> }<br /> else {<br /> return false;<br /> }</p> <p>} // SetHead</p> <p>/*<br /> Parameter : int, ElemType<br /> Return : true or false<br /> Description : assign an element to the list.<br /> */<br /> bool CList::Assign(int iPos, ElemType elem) {<br /> int i = 0;<br /> Node* p = head->pNext;</p> <p> if (iPos < 1 || iPos > itsLength()) {<br /> MessageBox(NULL, "wrong position in Assign function ", "snake game", MB_OK);<br /> return false;<br /> }</p> <p> // move to the position<br /> while (p && i < iPos - 1) {<br /> p = p->pNext;<br /> i++;<br /> }</p> <p> if (!p || i > iPos - 1) {<br /> MessageBox(NULL, "less than or more than list length", "snake game", MB_OK);<br /> return false;<br /> }</p> <p> // assign data to element<br /> p->data = elem;</p> <p> return true;<br /> } // Assign</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : if list is empty return ture;<br /> */<br /> bool CList::isEmpty() const {</p> <p> if (head->pNext) {<br /> return false;<br /> }<br /> else {<br /> return true;<br /> }</p> <p>} // isEmpty</p> <p>/*<br /> Parameter : none<br /> Return : list's length.<br /> Description : get list length.<br /> */<br /> int CList::itsLength() const {<br /> Node* p = head->pNext;<br /> int iLen = 0;</p> <p> while (p) {<br /> p = p->pNext;<br /> iLen++;<br /> }</p> <p> return iLen;</p> <p>} // itsLength</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : visit queue every element.<br /> */<br /> bool CList::Traverse(HDC hDC) const {</p> <p> Node* p = head->pNext;</p> <p> while(p) {</p> <p> block(hDC, p->data.xPos, p->data.yPos);</p> <p> p = p->pNext;<br /> }</p> <p> return true;<br /> } // Traverse</p> <p>/*<br /> Parameter : none<br /> Return : none<br /> Description : destroy queue no matter empty or not.<br /> */<br /> CList::~CList() {</p> <p>} // default destructor

/*<br /> snake class definitions.<br /> */</p> <p>#include "snake.h"</p> <p>/*<br /> Parameter : none<br /> Return : none<br /> Description : class default constructor.<br /> */<br /> CSnake::CSnake() {</p> <p> ElemType elem;<br /> elem.yPos = 8;</p> <p> // set random seed<br /> srand((unsigned)time(NULL));</p> <p> for (int i = 8; i > 6; --i ) {<br /> elem.xPos = i;<br /> segment.Insert(1, elem);<br /> }</p> <p> // set default direction<br /> iDirection = 4;</p> <p> // set first food position<br /> food.xPos = RandInt(1, 62);<br /> food.yPos = RandInt(1, 43);</p> <p>} // default constructor</p> <p>/*<br /> Parameter : HDC<br /> Return : true or false<br /> Description : draw the snake.<br /> */<br /> bool CSnake::draw(HDC surface) {</p> <p> circle(surface, food.xPos, food.yPos, 5);</p> <p> segment.Traverse(surface);</p> <p> return true;<br /> } // draw</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : move snake head to east direction.<br /> */<br /> bool CSnake::east() {</p> <p> ElemType elem;<br /> ElemType data;<br /> ElemType next;</p> <p> segment.GetHead(elem);<br /> segment.GetHead(data);</p> <p> // move head segment to east<br /> elem.xPos += 1;<br /> segment.SetHead(elem);</p> <p> // move the rest segments<br /> for (int i = segment.itsLength() - 1; i > 0; --i) {<br /> segment.GetElem(i, next);<br /> segment.Assign(i, data);</p> <p> data = next;<br /> }</p> <p> // eat<br /> eat();</p> <p> return true;<br /> } // east</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : move snake head to west direction.<br /> */<br /> bool CSnake::west() {</p> <p> ElemType elem;<br /> ElemType data;<br /> ElemType next;</p> <p> segment.GetHead(elem);<br /> segment.GetHead(data);</p> <p> // move head segment to west<br /> elem.xPos -= 1;<br /> segment.SetHead(elem);</p> <p> // move rest segments<br /> for (int i = segment.itsLength() - 1; i > 0; --i) {<br /> segment.GetElem(i, next);<br /> segment.Assign(i, data);</p> <p> data = next;<br /> } </p> <p> //<br /> eat();</p> <p> return true;<br /> } // west</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : move snake head to north direction.<br /> */<br /> bool CSnake::north() {</p> <p> ElemType elem;<br /> ElemType data;<br /> ElemType next;</p> <p> segment.GetHead(elem);<br /> segment.GetHead(data); // store head inofrmation in data</p> <p> // move head segment to west<br /> elem.yPos -= 1;<br /> segment.SetHead(elem);</p> <p> // move rest segments<br /> for (int i = segment.itsLength() - 1; i > 0; --i) {<br /> segment.GetElem(i, next);<br /> segment.Assign(i, data);</p> <p> data = next;<br /> }</p> <p> eat();</p> <p> return true;<br /> } // north</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : move snake head to south direction.<br /> */<br /> bool CSnake::south() {</p> <p> ElemType elem;<br /> ElemType data;<br /> ElemType next;</p> <p> segment.GetHead(elem);<br /> segment.GetHead(data);</p> <p> // move head segment to west<br /> elem.yPos += 1;<br /> segment.SetHead(elem);</p> <p> // move rest segment<br /> for (int i = segment.itsLength() - 1; i > 0; --i) {<br /> segment.GetElem(i, next);<br /> segment.Assign(i, data);</p> <p> data = next;<br /> }</p> <p> //<br /> eat();</p> <p> return true;<br /> } // north</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : check the snake crash itself or wall.<br /> */<br /> bool CSnake::collision() {</p> <p> ElemType head;<br /> ElemType data;</p> <p> segment.GetHead(head);</p> <p> // collision with wall<br /> if (head.xPos < 0 || head.xPos > 62 || head.yPos < 0 || head.yPos > 43) {<br /> MessageBox(NULL, "collision with wall! GAME OVER", "snake game", MB_OK);<br /> return true;<br /> }</p> <p> // collision with itself<br /> for (int i = segment.itsLength() - 1; i > 0; --i) {<br /> segment.GetElem(i, data);</p> <p> if (head.xPos == data.xPos && head.yPos == data.yPos) {<br /> MessageBox(NULL, "collision with itselt! GAME OVER", "snake game", MB_OK);<br /> return true;<br /> }<br /> }</p> <p> return false;<br /> } // move</p> <p>/*<br /> Parameter : none<br /> Return : true or false<br /> Description : check if eat food.<br /> */<br /> bool CSnake::eat() {<br /> ElemType head;<br /> segment.GetHead(head);</p> <p> if (head.xPos == food.xPos && head.yPos == food.yPos) {<br /> //MessageBox(NULL, "full! can not eat more... ", "snake game", MB_OK);</p> <p> // reset food position<br /> food.xPos = RandInt(0, 62);<br /> food.yPos = RandInt(0, 43);</p> <p> // increase snake length<br /> ElemType data;<br /> segment.GetElem(1, data);<br /> segment.Insert( 1, data);</p> <p> return true;<br /> }</p> <p> return false;<br /> } // eat</p> <p>/*<br /> Parameter : none<br /> Return : none<br /> Description : class default destructor.<br /> */<br /> CSnake::~CSnake() {<br /> } // default destructor

//-----------------------------------------------------------------------------<br /> // Copyright (c) 2009 eryar All rights reserved.<br /> //<br /> // File : main.cpp<br /> // Author : eryar@163.com<br /> // Date : 2010-01-07<br /> // Version : 1.0v<br /> //<br /> // Description : classic game : Snake Game.<br /> //<br /> //=============================================================================</p> <p>#include "resource.h"<br /> #include "snake.h"</p> <p>char* g_szAppName = "Snake Game";<br /> CSnake snake;</p> <p>LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);<br /> int WINAPI WinMain(HINSTANCE hInstance,<br /> HINSTANCE hPrevInstance,<br /> LPSTR lpCmdLine,<br /> int nShowCmd)<br /> {<br /> MSG Msg;<br /> HWND hWnd;<br /> WNDCLASSEX wc;<br /> bool bFlag = false;</p> <p> char* szClassName = "CTeris";</p> <p> wc.cbSize = sizeof(WNDCLASSEX);<br /> wc.style = CS_HREDRAW|CS_VREDRAW;<br /> wc.lpfnWndProc = WndProc;<br /> wc.cbClsExtra = 0;<br /> wc.cbWndExtra = 0;<br /> wc.hInstance = hInstance;<br /> wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);<br /> wc.hCursor = LoadCursor(NULL, IDC_ARROW);<br /> wc.hbrBackground = NULL;<br /> wc.lpszMenuName = NULL;<br /> wc.lpszClassName = szClassName;<br /> wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);</p> <p> if (!RegisterClassEx(&wc)) {<br /> MessageBox(NULL, "register window class failed! ", g_szAppName, MB_OK|MB_ICONERROR);<br /> return false;<br /> }</p> <p> hWnd = CreateWindowEx(NULL,<br /> szClassName,<br /> g_szAppName,<br /> WS_CAPTION|WS_OVERLAPPED|WS_SYSMENU|WS_VISIBLE|WS_THICKFRAME,<br /> 0,0,<br /> 645, 485,<br /> NULL,<br /> NULL,<br /> hInstance,<br /> NULL);</p> <p> if (!hWnd) {<br /> MessageBox(NULL, "create window failed! ", g_szAppName, MB_OK|MB_ICONERROR);<br /> return false;<br /> }</p> <p> ShowWindow(hWnd, nShowCmd);<br /> UpdateWindow(hWnd);</p> <p> while (!bFlag) {<br /> while(PeekMessage(&Msg, NULL, 0, 0, PM_REMOVE)) {</p> <p> if (Msg.message == WM_QUIT) {<br /> bFlag = true;<br /> }<br /> else {<br /> TranslateMessage(&Msg);<br /> DispatchMessage(&Msg);<br /> }<br /> }</p> <p> // This will call WM_PAINT which well render our scene<br /> InvalidateRect(hWnd, NULL, true);<br /> UpdateWindow(hWnd);<br /> }</p> <p> UnregisterClass(szClassName, wc.hInstance);</p> <p> return Msg.wParam;<br /> }</p> <p>LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam) {</p> <p> // these hold the dimensions of the client windows area<br /> static cxClient, cyClient;</p> <p> // used to create the back buffer<br /> HDC hDC;<br /> static HDC hDCBackBuffer;<br /> static HBITMAP hBitmap;<br /> static HBITMAP hOldBitmap;<br /> PAINTSTRUCT ps;</p> <p> switch(Msg) {<br /> case WM_CREATE:<br /> RECT rect;</p> <p> GetClientRect(hWnd, &rect);<br /> cxClient = rect.right;<br /> cyClient = rect.bottom;</p> <p> // create a surface for us to render to(back buffer)<br /> hDCBackBuffer = CreateCompatibleDC(NULL);<br /> hDC = GetDC(hWnd);<br /> hBitmap = CreateCompatibleBitmap(hDC, cxClient, cyClient);</p> <p> // select the bitmap into the memory device context<br /> hOldBitmap = (HBITMAP)SelectObject(hDCBackBuffer, hBitmap);</p> <p> // don't forget to release the DC<br /> ReleaseDC(hWnd, hDC);</p> <p> break;</p> <p> case WM_SIZE:<br /> cxClient = LOWORD(lParam);<br /> cyClient = HIWORD(lParam);</p> <p> SelectObject(hDCBackBuffer, hOldBitmap);<br /> hDC = GetDC(hWnd);<br /> hBitmap = CreateCompatibleBitmap(hDC, cxClient, cyClient);<br /> hOldBitmap = (HBITMAP)SelectObject(hDCBackBuffer, hBitmap);<br /> ReleaseDC(hWnd, hDC);</p> <p> break;</p> <p> case WM_PAINT:<br /> hDC = BeginPaint(hWnd, &ps);</p> <p> // fill our back buffer with white<br /> BitBlt(hDCBackBuffer, 0, 0, cxClient, cyClient, NULL,NULL, NULL, WHITENESS);</p> <p> // render scene code here<br /> snake.draw(hDCBackBuffer);</p> <p> // now blit the back buffer to front<br /> BitBlt(hDC, 0, 0, cxClient, cyClient, hDCBackBuffer, 0, 0, SRCCOPY);</p> <p> ReleaseDC(hWnd, hDC);<br /> EndPaint(hWnd, &ps);<br /> break;</p> <p> case WM_KEYDOWN:<br /> switch(wParam) {<br /> case VK_ESCAPE:<br /> PostQuitMessage(0);<br /> break;</p> <p> case VK_RETURN:</p> <p> break;</p> <p> case VK_SPACE:</p> <p> break;</p> <p> case VK_LEFT:</p> <p> if (!snake.collision()) {<br /> snake.west();<br /> }</p> <p> break;</p> <p> case VK_RIGHT:</p> <p> if (!snake.collision()) {<br /> snake.east();<br /> }</p> <p> break;</p> <p> case VK_UP:</p> <p> if (!snake.collision()) {<br /> snake.north();<br /> }</p> <p> break;</p> <p> case VK_DOWN:</p> <p> if (!snake.collision()) {<br /> snake.south();<br /> }</p> <p> break;</p> <p> default:<br /> break;</p> <p> }</p> <p> SendMessage(hWnd, WM_PAINT, wParam, lParam);</p> <p> break;</p> <p> case WM_DESTROY:<br /> SelectObject(hDCBackBuffer, hOldBitmap);</p> <p> // clean up our back buffer objects<br /> DeleteDC(hDCBackBuffer);<br /> DeleteObject(hBitmap);</p> <p> // kill the application, this sends a WM_QUIT message<br /> PostQuitMessage(0);</p> <p> break;</p> <p> default:<br /> break;</p> <p> }</p> <p> return DefWindowProc(hWnd, Msg, wParam, lParam);<br /> } // WndProc

请大家指导啊...