C++控制台实现贪吃蛇游戏

struct Snake
{
 int x, y;
};
class snake
{
public:
 snake()    //构造函数
 {
 length = 3;
 s[2].x = 10;
 s[2].y = 10;
 s[1].x = 9;
 s[1].y = 10;
 s[0].x = 8;
 s[0].y = 10;
 up = right = left = down = 0;
 }
 ~snake(){}
 void display();  //显示蛇身函数
 void Rightmove();  //右移函数
 void Leftmove();  //左移函数
 void Upmove();   //上移函数
 void Downmove();  //下移函数
 int cheak();   //检查是否撞墙或撞到自身
 void creat_food();  //产生食物
 int eat_food();  //吃食物
private:
 struct Snake s[100]; //先定义蛇身最长100
 int length;   //当前蛇长度
 int x3, y3;   //食物坐标
 int up, down, right, left; //蛇的状态，是上移还是下移或...
};
 
void make_frame();  //打印框架的函数
void show();   //游戏开始倒计时函数
void gameover();  //游戏结束函数

# include <iostream>
# include <Windows.h>
# include <time.h>
# include "snake.h"
# define MaxLen 20
# define MaxWen 30
using namespace std;
HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE); //获取句柄
void gotoxy(HANDLE hOut, int x, int y)   //输出位置的函数
{
 COORD pos;
 pos.X = x;
 pos.Y = y;
 SetConsoleCursorPosition(hOut, pos);
}
 
void snake::display()      //打印蛇身
{
 for (int i = length - 1; i >= 0; i--)
 {
 if (i == length - 1)    //打印蛇头
 {
 gotoxy(hOut, s[i].x, s[i].y); 
 cout << char(15);
 }
 else        //打印蛇身
 {
 gotoxy(hOut, s[i].x, s[i].y);
 cout << '*';
 }
 }
 gotoxy(hOut, 0, 22);
}
void snake::Rightmove()     //右移
{
 right = 1; up = down = left = 0;
 int x1, x2, y1, y2;
 x1 = x2 = s[length - 1].x;
 y1 = y2 = s[length - 1].y;
 s[length - 1].x++;      //蛇头x坐标自增
 for (int i = length - 2; i >= 0; i--)  //除了蛇头，其他的结点都等于它的上一个结点的坐标
 {
 x2 = s[i].x; y2 = s[i].y;
 s[i].x = x1; s[i].y = y1;
 x1 = x2; y1 = y2;
 }
 gotoxy(hOut, x2, y2);   //消除蛇移动遗留的 ‘*'
 cout << ' ';
}
void snake::Leftmove()    //左移
{
 left = 1; right = up = down = 0;
 int x1, x2, y1, y2;
 x1 = x2 = s[length - 1].x;
 y1 = y2 = s[length - 1].y;
 s[length - 1].x--;      //同上
 for (int i = length - 2; i >= 0; i--)
 {
 x2 = s[i].x; y2 = s[i].y;
 s[i].x = x1; s[i].y = y1;
 x1 = x2; y1 = y2;
 }
 gotoxy(hOut, x2, y2);   //同上
 cout << ' ';
}
void snake::Downmove()   //下移
{
 down = 1; right = up = left = 0;
 int x1, x2, y1, y2;
 x1 = x2 = s[length - 1].x;
 y1 = y2 = s[length - 1].y;
 s[length - 1].y++;      //同上
 for (int i = length - 2; i >= 0; i--)
 {
 x2 = s[i].x; y2 = s[i].y;
 s[i].x = x1; s[i].y = y1;
 x1 = x2; y1 = y2;
 }
 gotoxy(hOut, x2, y2);   //同上
 cout << ' ';
}
void snake::Upmove()    //上移
{
 up = 1; down = right = left = 0;
 int x1, x2, y1, y2;
 x1 = x2 = s[length - 1].x;
 y1 = y2 = s[length - 1].y;
 s[length - 1].y--;      //同上
 for (int i = length - 2; i >= 0; i--)
 {
 x2 = s[i].x; y2 = s[i].y;
 s[i].x = x1; s[i].y = y1;
 x1 = x2; y1 = y2;
 }
 gotoxy(hOut, x2, y2);  //同上
 cout << ' ';
}
int snake::cheak()
{
 int flag = 0;
 for (int i = length - 2; i >= 0; i--)   //是否撞到自身
 {
 if (s[i].x == s[length - 1].x && s[i].y == s[length - 1].y)
 {
 flag = 1;  //是，标识符为1
 break;
 }
 }
 if (flag == 1 || (s[length - 1].x >= 30 + 1 || s[length - 1].x < 4) || (s[length - 1].y <= 1 || s[length - 1].y >= 20))
 {
 return 0;   //检测是否撞自身，或者撞墙
 }
 else
 {
 return 1;
 }
}
void snake::creat_food()   //产生食物坐标
{
xy: x3 = (rand() % (25)) + 3;
 y3 = (rand() % (17)) + 2;
 for (int i = length - 1; i >= 0; i--) //检查食物是否在蛇身上
 {
 if (s[i].x == x3 && s[i].y == y3) //是就重新产生食物坐标
 goto xy;
 }
 gotoxy(hOut, x3, y3);  //显示食物
 cout << '*';
}
int snake::eat_food()
{
 if (s[length - 1].x == x3 && s[length - 1].y == y3) //蛇头碰到食物
 {
 if (up == 1)     //如果蛇是在上移，增加一个结点，为蛇头的上一个结点
 {
 s[length].x = x3;
 s[length].y = y3 - 1;
 }
 else if (down == 1)    //同上
 {
 s[length].x = x3;
 s[length].y = y3 + 1;
 }
 else if (right == 1)   //同上
 {
 s[length].x = x3 + 1;
 s[length].y = y3;
 }
 else if (left == 1)    //同上
 {
 s[length].x = x3 - 1;
 s[length].y = y3;
 }
 length++;      //蛇长加1
 return 1;
 }
 else
 return 0;
}
void make_frame()      //打印框架函数
{
 cout << "   贪吃蛇游戏" << endl;
 gotoxy(hOut, 2, 1);
 cout << "?";
 for (int i = 4; i < 2 + MaxWen; i++)
 {
 gotoxy(hOut, i, 1);
 printf("=");
 }
 for (int i = 2; i < MaxLen; i++)
 {
 gotoxy(hOut, 2, i);
 printf("?");
 }
 gotoxy(hOut, 2 + MaxWen, 1);
 printf("?");
 for (int i = 2; i < MaxLen; i++)
 {
 gotoxy(hOut, 2 + MaxWen, i);
 printf("?");
 }
 gotoxy(hOut, 2, MaxLen);
 printf("?");
 gotoxy(hOut, 2 + MaxWen, MaxLen);
 printf("?");
 for (int i = 4; i < 2 + MaxWen; i++)
 {
 gotoxy(hOut, i, MaxLen);
 printf("=");
 }
}
void show()   //显示操作方法和游戏开始倒计时
{
 gotoxy(hOut, 35, 5);
 cout << "↑:" << 'w';
 gotoxy(hOut, 35, 6);
 cout << "←:" << 'a';
 gotoxy(hOut, 35, 7);
 cout << "↓:" << 's';
 gotoxy(hOut, 35, 8);
 cout << "→:" << 'd';
 gotoxy(hOut, 16, 5);
 cout << '3';
 Sleep(1000);
 gotoxy(hOut, 16, 5);
 cout << '2';
 Sleep(1000);
 gotoxy(hOut, 16, 5);
 cout << '1';
 Sleep(1000);
 gotoxy(hOut, 16, 5);
 cout << ' ';
}
void gameover()  //游戏结束函数
{
 system("cls");
 system("color 3B");
 gotoxy(hOut, 14, 5);
 cout << "  GAME OVER!";
 gotoxy(hOut, 14, 6);
 cout << "PLAY AGAIN ? Y(yes) \ N(no)";
}

# include <iostream>
# include <Windows.h>
# include <conio.h>
# include "snake.h"
using namespace std;
char ch;
int main()
{
 while (1)
 {
 snake sn;    //声明对象
 system("cls");   //清屏
 system("color 3B");  //背景和字体颜色调整
 make_frame();   //打印框架
 sn.display();   //显示蛇
 show();     //游戏开始
 sn.creat_food();   //产生食物
 while (sn.cheak())  //检查是否死亡
 { 
 sn.Rightmove();  //右移
 sn.display();  //显示蛇身
 if (sn.eat_food()) //检查是否吃到食物
 {
 sn.creat_food(); //重新产生食物
 sn.display();
 }
 Sleep(500);   //等待500Ms
 p: if (_kbhit())      //是否有按键
 {
 ch = _getch();
 if (ch == 97 || ch == 100)
  goto p;
 if (ch == 115 || ch == 119)
  break;
 }
 }
 pp: switch (ch)   //有按键
 {
 case 119:    //上移的情况
 {
 while (sn.cheak())
 {
  sn.Upmove();
  sn.display();
  if (sn.eat_food())
  {
  sn.creat_food();
  sn.display();
  Sleep(300);
  }
  Sleep(500);
 pw: if (_kbhit())
 {
  ch = _getch();
  if (ch == 119 || ch == 115)
  goto pw;
  if (ch == 97 || ch == 100)
  goto pp;
 }
 }
 }break;
 case 97:    //左移的情况
 {
  while (sn.cheak())
  { 
  sn.Leftmove();
  sn.display();
  if (sn.eat_food())
  {
  sn.creat_food();
  sn.display();
  }
  Sleep(500);
  pa: if (_kbhit())
  {
  ch = _getch();
  if (ch == 97 || ch == 100)
   goto pa;
  if (ch == 115 || ch == 119)
   goto pp;
  }
  }
 }break;
 case 115:    //下移的情况
 {
 while (sn.cheak())
 { 
  sn.Downmove(); 
  sn.display();
  if (sn.eat_food())
  {
  sn.creat_food();
  sn.display();
  Sleep(300);
  }
  Sleep(500);
 ps: if (_kbhit())
 {
  ch = _getch();
  if (ch == 115 || ch == 119)
  goto ps;
  if (ch == 97 || ch == 100)
  goto pp;
 }
 }
 }break;
 case 100:     //右移的情况
 {
 while (sn.cheak())
 {
  sn.Rightmove(); 
  sn.display();
  if (sn.eat_food())
  {
  sn.creat_food();
  sn.display();
  } 
  Sleep(500);
 pd: if (_kbhit())
  {
  ch = _getch();
  if (ch == 100 || ch == 97)
  goto pd;
  if (ch == 119 || ch == 115)
  goto pp;
  }
 }
 }break;
 default:
 break;
 }
 gameover();   //显示游戏结束，是否重玩
 py: ch = _getch();
 if (ch == 110)   //否
 {
 system("cls");
 break;
 }
 else if (ch == 121) //是
 continue;
 else
 goto py;
 }
 return 0;
}