C++ 之 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;}