贪吃蛇

#include <iostream>
#include <windows.h>
#include <stdlib.h>
#include<iomanip>
#include <conio.h>
#include <time.h>  //使用当前时间做种子;
enum dir{up_key = 1,down_key,left_key,right_key};  //枚举类型enum dir;
//围墙;
using namespace std;
class Fence{
public:
 void InitFence();
 void OutputF();
 char game[20][20];
}f; //定义对象;
//画框框;
void Fence::InitFence(){
 for(int i=0; i<20; i++)
  for(int j=0; j<20; j++){
   if(i==0||i==19||j==0||j==19)
    game[i][j]= '$';
   else game[i][j]= ' ';
     }
}
void Fence::OutputF(){

 for(int i=0; i<20; i++){
  for(int j=0; j<20; j++)
   cout<<game[i][j]<<' ';
   cout<<endl;
 }
}
class Time
{
 public:

  Time(){
   second=0,minute=0,hour=0;
  }
  void display();
  void settime();
  private:
    int second;
    int minute;
    int hour;
 }t;
 void Time::settime()
{
 second++;
 if(60==second)
  {
   second=0;
   minute+=1;
 }
  else if(60==minute)
  {
   minute=0;
   hour+=1;
  }
  int i, j;
 for (i = 0; i < 1000; i++)
  for (j = 0; j < 1000; j++);
}
void Time::display()
{
   cout<<"\t"<<right<<setfill('0')<<setw(2)<<hour
  <<':'<<right<<setfill('0')<<setw(2)<<minute
   <<':'
   <<right<<setw(2)<<second<<setfill('0')<<"\n";
   cout<<"\n";
}
//蛇结点;
class SnakeNode{
private:
 int x,y;
 SnakeNode *prior,*next;
public:
 void add_head(int x,int y);
 int get_x();
 int get_y();
 void delete_tail();
 SnakeNode* next_return(){return next;}
 void DestroyList(SnakeNode L);
}*head=NULL, *tail =NULL;
//插入头结点;
void SnakeNode::add_head(int x,int y){
 SnakeNode *q=new SnakeNode;
 q->x =x; q->y =y;
 q->next =head;
 q->prior =NULL;
 if(head) head->prior =q;
 head =q;
 if(!tail) tail = head;
 f.game[x][y]= '*';  //f对象可以在定义Fence类时定义; 且Fence类在SnakeNode类前定义;
}
int SnakeNode::get_x(){
 return x;
}
int SnakeNode::get_y(){
 return y;
}
void SnakeNode::delete_tail()
{
 SnakeNode *p =tail;
 f.game[tail->get_x()][tail->get_y()]= ' ';
 if(tail==head)
  tail= head= NULL;
 else{
  tail= tail->prior;
  tail->next= NULL;
 }
 delete p;
}
class move{
public:
    move(string n):Name(n){score = 0;}
 dir point;    //枚举变量point: 控制方向;
 int food_x;
 int food_y;
public:
 char moving(string *n,int *s);
 void change_point(char);  //改变方向;
 void get_food();
    int score_return(int n){
                         cout<<"    积分:"<<score;cout<<"    leavel:"<<n;
       }

 string Name;
 int score;
};
char move::moving(string *n,int *s){
 int a,b,k = 0;
 char YN;
 string swp;
 int swp2;
 SnakeNode *p = head,*q,*z;
 a= head->get_x();  //取得头结点横坐标
 b= head->get_y();  //头结点纵坐标
 switch(point){
 case 1: --a; break;
 case 2: ++a; break;
 case 3: --b; break;
 case 4: ++b; break;
 }
if(a==19||b==19||a==0||b==0)
{    
        cout<<"\t\t\t\tgame over!!!\n\n\n"<<endl;
        cout<<"本次游戏所用时间为:";
        t.display();
        cout<<"    积分:"<<score;
  exit(0);
  }
 if(a==food_x && b==food_y){     //吃food;
  head->add_head(a,b);
  score += 10;
  get_food();
 }
 else{
  head->add_head(a,b); //插入头结点;
  head->delete_tail(); //删除尾结点;
 }
 if(a!=food_x && b!=food_y&&f.game[a][b]=='*')
 {
  cout<<"咬到自己"<<endl;
  exit(0);
 }
}
void help()
{
     cout<<"\t\t\t----------------帮助-------------------"<<endl;
     cout<<"\t\t\t1.使用'W','S,'A,'D控制上下左右         "<<endl;
     cout<<"\t\t\t2.按任意方向键开始游戏，按'Q'键暂停游戏"<<endl;
     cout<<"\t\t\t3.退出游戏请按'T'键!!!                 "<<endl;
     cout<<"\t\t\t按任意键进入游戏。。。。。。。。。。。"<<endl;
     while(!kbhit()){Sleep(1000);}
     getch();
     system("cls");
}
void move::change_point(char keydown){
 switch(keydown){
    case 'W':
 case 'w': point= up_key; break;
 case 'S':
    case 's': point= down_key; break;
 case 'A':
    case 'a': point= left_key; break;
 case 'D':
    case 'd': point= right_key; break;
 case 'Q':
    case 'q': while(!kbhit()){Sleep(1000);};break;
 case 'E':
 case 'e': help();break;
 case 'T':
    case 't': cout<<"正在退出。。。。。。";Sleep(2000);exit(0);break;
 }
}
void move::get_food(){
 srand((unsigned int) time(NULL)); //做种子(程序运行时间);
 food_x= rand()%17+1;
 food_y= rand()%17+1;
 f.game[food_x][food_y]= '#';
}
int leave(int n)
{
    cout<<"\t\t\t\t游戏难度级别1——5"<<endl;
    cout<<"\t\t\t\t当前难度"<<n<<endl;
  cout<<"\t\t\t\t选择难度[ ]\b\b";
    cin>>n;
    system("cls");
    return n;
}

int menu()
{   int k = 1;
 cout<<"\t\t\t************************"<<endl;
    cout<<"\t\t\t\t<1>开始游戏"<<endl;
    cout<<"\t\t\t\t<2>选择难度"<<endl;
    cout<<"\t\t\t\t<3>退出游戏"<<endl;
    cout<<"\t\t\t\t输入你的选择[ ]\b\b";
    cin>>k;
    return k;
}
void game_play(int n,string *name,int *s)
{ string na;
 system("cls");
 system("color a4");
 move m(na);
    char k;
    f.InitFence();
 head->add_head(4,3);
 head->add_head(4,4);
 head->add_head(4,5);
 m.get_food();
 f.OutputF();
 while (true){
  char keydown = getch();
  t.settime();t.display();
  m.change_point(keydown);
  while(!kbhit()){
   system("cls");
   k = m.moving(name,s);
   f.OutputF();
    m.score_return(n);
    Sleep(200/n);
  }
 }
 end:
        system("cls");
}
int main(){
 int n = 1,k = 1;
    string name[3];
    int score[3] = {0};
 while(n)
    {
        k = menu();
        system("cls");
        switch(k){
        case 1:help(),game_play(n,name,score);break;
        case 2:n = leave(n);break;
        case 3:cout<<"\t\t\t\t退出游戏中。。。。";Sleep(2000);exit(0);break;
        }
    }
 return 0;
}