贪吃蛇

#include<iostream>
#include<windows.h>
#include<conio.h>
#include<time.h>
#include<stdlib.h>
using namespace std;
const int N=21;
void Get_xy(int x,int y)   //定位光标位置
{
    HANDLE hout;
    COORD pos;
    pos.X=x*2;
    pos.Y=y;
    hout=GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleCursorPosition(hout,pos);
}

void Color(int num)   //设置颜色
{
    HANDLE hout;
    hout=GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleTextAttribute(hout,num);
}

void Initial()   //初始化
{
    int i,j;
    int wall[N+2][N+2]={{0}};
    for(i=1;i<=N;i++)
        for(j=1;j<=N;j++)
            wall[i][j]=1;
    Color(11);
    for(i=0;i<N+2;i++)
    {
        for(j=0;j<N+2;j++)
        {
            if(wall[i][j])
                cout<<"■";
            else cout<<"□";
        }
        cout<<endl;
    }
    Get_xy(N+3,1); Color(20);
    cout<<"按'W','S','A','D'进行操作"<<endl;
    Get_xy(N+3,2); Color(20);
    cout<<"按任意键暂停"<<endl;
    Get_xy(N+3,3); Color(20);
    cout<<"得分："<<endl;
}

void game()
{
    int** snake=NULL;
    int len=1;
    int i;
    int score=0;
    int apple[2];
    int tail[2];
    char ch='p';
    Initial();
    srand((unsigned)time(NULL));
    apple[0]=rand()%N+1;
    apple[1]=rand()%N+1;
    Get_xy(apple[0],apple[1]);
    Color(12);
    cout<<"●"<<endl;
    snake=(int**)realloc(snake,sizeof(int*)*len);
    for(i=0;i<len;i++)
        snake[i]=(int*)malloc(sizeof(int)*2);
    snake[0][0]=N/2;
    snake[0][1]=N/2+1;
    Get_xy(snake[0][0],snake[0][1]); Color(14);
    cout<<"⊙"<<endl;
    int flag=1;
    while(1)
    {
        if(flag)
        {
        tail[0]=snake[len-1][0];
        tail[1]=snake[len-1][1];
        Get_xy(tail[0],tail[1]);
        Color(11);
        cout<<"■"<<endl;
        }
        flag=1;
        for(i=len-1;i>0;i--)
        {
            snake[i][0]=snake[i-1][0];
            snake[i][1]=snake[i-1][1];
            Get_xy(snake[i][0],snake[i][1]);
            Color(14);
            cout<<"★"<<endl;
        }
        if(kbhit())
        {
            Get_xy(0,N+3);
            ch=getche();
        }
        switch(ch)
        {
        case 'W':
        case 'w': snake[0][1]--; break;
        case 'S':
        case 's': snake[0][1]++; break;
        case 'A':
        case 'a': snake[0][0]--; break;
        case 'D':
        case 'd': snake[0][0]++; break;
        default :break;
        }
        for(i=1;i<len;i++)
        {
            if(snake[0][0]==snake[i][0] && snake[0][1]==snake[i][1])
            {
                Get_xy(N/2,N/2); Color(30);
                cout<<"Game over!"<<endl;
                exit(0);
            }
        }
        Get_xy(snake[0][0],snake[0][1]);
        Color(14); cout<<"⊙"<<endl;
        Sleep(abs(200-0.5*score));
        if(snake[0][0]==apple[0] && snake[0][1]==apple[1])
        {
            flag=0; score++; len++;   srand((unsigned)time(NULL));
            snake=(int**)realloc(snake,sizeof(int*)*len);
            snake[len-1]=(int*)malloc(sizeof(int)*2);
            Get_xy(N+6,3); Color(20); cout<<score<<endl;
            apple[0]=rand()%N+1; apple[1]=rand()%N+1;
            Get_xy(apple[0],apple[1]);
            Color(12);
            cout<<"●"<<endl;
        }
        if(snake[0][0]==0 || snake[0][0]==N || snake[0][1]==0 || snake[0][1]==N)
        {
            Get_xy(N/2,N/2); Color(30);
            cout<<"Game Over!"<<endl;
            for(i=0;i<len;i++)
                free(snake[i]);
            Sleep(INFINITE);
            exit(0);
        }
        if(len>=N*N/20)
        {
            Get_xy(N/2,N/2); Color(30);
            cout<<"Win!"<<endl;
            for(i=0;i<len;i++)
                free(snake[i]);
            Sleep(INFINITE);
            exit(0);
        }
    }
}
int main()
{
    game();
    return 0;
}