简单的贪吃蛇游戏实现

贪吃蛇功能实现：

(1)定义贪吃蛇游戏棋盘图

(2)初始化棋盘

(3)输出棋盘所在信息

(3)选择游戏难度

(4)随机产生食物

(5)更新游戏动态

(6)设置游戏相应的操作

(7)打印游戏结果

代码实现:

#include <windows.h>  #include <stdlib.h>  #include <conio.h>  #include <time.h>  #include <cstring>  #include <cstdio>  #include <iostream>   using namespace std;const int N = 32;//定义贪吃蛇地图大小//定义贪吃蛇的坐标类  class SnakePosition{public:int x, y;      //x表示行，y表示列  void Initialize(int & j)//初始化坐标{x = 1;y = j;}};//定义贪吃蛇坐标类数组，有(N-2)*(N-2)个坐标  SnakePosition position[(N - 2)*(N - 2) + 1]; class SnakeMap//定义贪吃蛇的游戏类{public:SnakeMap(int h = 4, int t = 1, int l = 4, char d = 77, int s = 0)//构造: length(l), direction(d), head(h), tail(t), score(s){}void Initialize()   //定义初始化函数，将贪吃蛇的棋盘图进行初始化{int i, j;for (i = 1; i <= 3; i++)s[1][i] = '*';s[1][4] = '#';for (i = 1; i <= N - 2; i++)for (j = 1; j <= N - 2; j++)s[i][j] = ' '; // 初始化贪吃蛇棋盘中间空白部分  for (i = 0; i <= N - 1; i++)s[0][i] = s[N - 1][i] = '-'; //初始化贪吃蛇棋盘上下墙壁  for (i = 1; i <= N - 2; i++)s[i][0] = s[i][N - 1] = '|'; //初始化贪吃蛇棋盘左右墙壁  }void ShowGame()//输出贪吃蛇棋盘信息 {system("cls"); // 清屏  int i, j;cout << endl;for (i = 0; i<N; i++){cout << '\t';for (j = 0; j<N; j++)cout << s[i][j] << ' '; // 输出贪吃蛇棋盘  if (i == 2)cout << "\t等级：" << grade;if (i == 6)cout << "\t速度：" << gamespeed;if (i == 10)cout << "\t得分：" << score << "分";if (i == 14)cout << "\t暂停：按一下空格键";if (i == 18)cout << "\t继续：按两下空格键";cout << endl;}}int UpdataGame()//更新当前游戏进度{P p;p.x1 = 0;p.y1 = 0;int gameover = 1;int key = direction;long start = clock();while ((gameover = (clock() - start <= gamespeed)) && !_kbhit());//如果有键按下或时间超过自动前进时间间隔则终止循环  if (gameover){_getch();//_getch()接受任意一个从键盘上输入的字符，//转化为对应的ASCII(不需要输入回车就可以接收)key = _getch();}if (key == ' '){//按空格键暂停//按空格键继续的功能while (_getch() != ' '){}}elsedirection = key;switch (direction){case 72:// 向上  x = position[head].x - 1;y = position[head].y;break; case 80:// 向下 x = position[head].x + 1;y = position[head].y;break;  case 75:// 向左x = position[head].x;y = position[head].y - 1;break;   case 77:// 向右x = position[head].x;y = position[head].y + 1;   }// 按键非方向键  if (!(direction == 72 || direction == 80 || direction == 75 || direction == 77))   gameover = 0;else if (x == 0 || x == N - 1 || y == 0 || y == N - 1)   // 碰到墙壁  gameover = 0;else if (s[x][y] != ' ' && !(x == p.x1 && y == p.y1))    // 蛇头碰到蛇身  gameover = 0;else if (x == p.x1 && y == p.y1){// 吃到食物，长度加1  length++;if (length >= 8 && gameauto){length -= 8;grade++;if (gamespeed >= 200)gamespeed -= 200; // 改变贪吃蛇前进速度  elsegamespeed = 100;}s[x][y] = '#';  //更新蛇头  s[position[head].x][position[head].y] = '*'; //吃米后将原先蛇头变为蛇身  head = (head + 1) % ((N - 2)*(N - 2));   //取蛇头坐标  position[head].x = x;position[head].y = y;ShowGame();gameover = 1;score += grade * 20;  //加分  SetPoint();   //产生米  }else{// 不吃米  s[position[tail].x][position[tail].y] = ' ';//将蛇尾置空  tail = (tail + 1) % ((N - 2) * (N - 2));//更新蛇尾坐标  s[position[head].x][position[head].y] = '*';  //将蛇头更为蛇身  head = (head + 1) % ((N - 2) * (N - 2));position[head].x = x;position[head].y = y;s[position[head].x][position[head].y] = '#'; //更新蛇头  gameover = 1;}return gameover;}void SetPoint()//随机产生食物{P p;srand((unsigned int)time(0));//设置rand()随机序列种子。对于给定的种子seed, rand()会反复产生特定的随机序列do{p.x1 = rand() % (N - 2) + 1;p.y1 = rand() % (N - 2) + 1;} while (s[p.x1][p.y1] != ' ');s[p.x1][p.y1] = '*';}void GetGrade()//选择游戏等级 {cin >> grade;while (grade>7 || grade<1){cout << "请输入数字1-7选择等级，输入其他数字无效" << endl;cin >> grade;}switch (grade){case 1:gamespeed = 1000;gameauto = 0;break;case 2:gamespeed = 800;gameauto = 0;break;case 3:gamespeed = 600;gameauto = 0;break;case 4:gamespeed = 400;gameauto = 0;break;case 5:gamespeed = 200;gameauto = 0;break;case 6:gamespeed = 100;gameauto = 0;break;case 7:grade = 1;gamespeed = 1000;gameauto = 1;break;}}void Display()//输出等级，得分情况以及称号  {cout << "\n\t\t\t\t等级：" << grade;cout << "\n\n\n\t\t\t\t速度：" << gamespeed;cout << "\n\n\n\t\t\t\t得分：" << score << "分";}private:char s[N][N];//定义贪吃蛇棋盘，包括墙壁。  int grade, length;int gamespeed; //前进时间间隔  char direction; // 初始情况下，向右运动  int head, tail;int score;bool gameauto;struct P{int x1;int y1; // 随机出米  };int x, y;}; int main(){char ctn = 'y';int nodead = 1;cout << "\n\n\n\n\n\t\t\t 欢迎进入贪吃蛇游戏!" << endl;//欢迎界面;  cout << "\n\n\n\t\t\t 按任意键马上开始。。。" << endl;//准备开始;;  _getch();while (ctn == 'y'){system("cls"); // 清屏  SnakeMap snake;snake.Initialize();cout << "\n\n请输入数字选择游戏等级：" << endl;cout << "\n\n\n\t\t\t1.等级一：速度 1000 \n\n\t\t\t2.等级二：速度 800\\n\n\t\t\t3.等级三：速度 600 \n\n\t\t\t4.等级四：速度 400\ \n\n\t\t\t5.等级五：速度 200 \n\n\t\t\t6.等级六：速度 100\ \n\n\t\t\t7.自动升级模式" << endl;snake.GetGrade();//获取等级  for (int i = 1; i <= 4; i++){position[i].Initialize(i);//初始化坐标  }snake.SetPoint();  // 产生第一个米  do{snake.ShowGame();nodead = snake.UpdataGame();} while (nodead);system("cls"); //清屏  cout << "\n\n\n\t\t\t\tGameover！\n\n" << endl;snake.Display();//输出等级/得分情况  cout << "\n\n\n\t\t    是否选择继续游戏？输入 y 继续，n 退出" << endl;cin >> ctn;}return 0;}