直接上代码

#include<iostream>
#include<windows.h>
#include<time.h>
#include<conio.h>
#define H 22
#define W 22
using namespace std;class chessboard
{
public:char qp[H][W];int i,j,x1,y1;chessboard();void food();void prt(int grade,int score,int gamespeed);};
chessboard::chessboard()
{for(i=1;i<=H-2;i++)for(j=1;j<=W-2;j++)qp[i][j]=' ';for(i=0;i<=H-1;i++)qp[0][i] = qp[H-1][i] = '#';for(i=1;i<=H-2;i++)qp[i][0] = qp[i][W-1] = '#';food();
}
void chessboard::food()
{srand(time(0));do{x1=rand()%W-2+1;y1=rand()%H-2+1;}while(qp[x1][y1]!=' ');qp[x1][y1]='$';
}
void chessboard::prt(int grade,int score,int gamespeed)
{system("cls");cout << endl;for(i=0;i<H;i++){cout << "\t";for(j=0;j<W;j++)cout<<qp[i][j]<<' ';if(i==0) cout << "\tGrade:" << grade;if(i==2) cout << "\tScore:" << score;if(i==4) cout << "\tAutomatic forward";if(i==5) cout << "\ttime interval:" << gamespeed << "ms";cout<<endl;}
}
class snake:public chessboard
{
public:int zb[2][100];long start;int head,tail,grade,score,gamespeed,length,timeover,x,y;char direction;snake();void move();};
snake::snake()
{cout<<"\n\n\t\tThe game is about to begin!"<<endl;for(i=3;i>=0;i--){start=clock();while(clock()-start<=1000);system("cls");if(i>0)cout << "\n\n\t\tCountdown:" << i << endl;}for(i=1;i<=3;i++)qp[1][i]='*';qp[1][4]='@';for(i=0; i<4; i++){zb[0][i] = 1;zb[1][i] = i + 1;}
}
void snake::move()
{score=0;head = 3,tail = 0;grade = 1, length = 4;gamespeed = 500;direction = 77;while(1){timeover = 1;start = clock();while((timeover=(clock()-start<=gamespeed))&&!kbhit());if(timeover){getch();direction = getch();}switch(direction){case 72: x= zb[0][head]-1; y= zb[1][head];break;case 80: x= zb[0][head]+1; y= zb[1][head];break;case 75: x= zb[0][head]; y= zb[1][head]-1;break;case 77: x= zb[0][head]; y= zb[1][head]+1;break;}if(x==0 || x==21 ||y==0 || y==21){cout << "\tGame over!" << endl;break;}if(qp[x][y]!=' '&&!(x==x1&&y==y1)){cout << "\tGame over!" << endl;break;}if(x==x1 && y==y1){length ++;score=score+100;if(length>=8){length -= 8;grade ++;if(gamespeed>=200)gamespeed = 550 - grade * 50;}qp[x][y]= '@';qp[zb[0][head]][zb[1][head]] = '*';head = (head+1)%100;zb[0][head] = x;zb[1][head] = y;food();prt(grade,score,gamespeed);}else{qp[zb[0][tail]][zb[1][tail]]=' ';tail=(tail+1)%100;qp[zb[0][head]][zb[1][head]]='*';head=(head+1)%100;zb[0][head]=x;zb[1][head]=y;qp[zb[0][head]][zb[1][head]]='@';prt(grade,score,gamespeed);}}
}
int main()
{chessboard cb;snake s;s.move();
}