c++简易贪吃蛇



http://blog.sina.com.cn/s/blog_641f90190100k6yo.html

模仿这个写的

基于dos

想要实现空格键暂停任意键开始（包括方向键）

因为方向键需要两个getch()获取所以没成功

有空再来重写

方向键(←)： 0xe04b
方向键(↑)： 0xe048
方向键(→)： 0xe04d
方向键(↓)： 0xe050

换算成10进制

方向键(←)： 75
方向键(↑)： 72
方向键(→)：  77
方向键(↓)：  80

//this is sample greedyshake game in dos

#include<iostream>
#include<windows.h>
#include<time.h>
#include<conio.h>
using namespace std;

#define ROW 22
#define COL 22
#define SHAKEQUE 200
#define PRESHAKELEN 3//初始的长度

inline void refresh(char q[ROW][COL], int grade, int gamespeed,int p)
{
 int i, j;
 system("cls");
 cout << endl;
 for (i = 0; i < ROW; i++){
  for (j = 0; j < COL; j++)
   cout << q[i][j]<<' ';

  if (i == 0)
   cout << "\t\t等级" << grade;
  if (i == 4)
   cout << "\t\t分数" << p;
  if (i == 8)
   cout << "\t\t间隔" << gamespeed << "ms";
  cout << endl;
 }
}//每次重新画出贪吃蛇棋盘

int main(){
 char direction;
 char newdirection;
 int i,j;
 int head, tail;
 int point=0;
 int greedyshakelocation[2][SHAKEQUE];//贪吃蛇队列中每个点的位置
 char greedyboard[ROW][COL];//贪吃蛇棋盘
 int grade=1, gamespeed=500;//等级和速度

 //初始化棋盘
 for (i = 0; i<COL; i++)
  greedyboard[0][i] = greedyboard[ROW-1][i] = '-';
 for (j = 1; j < ROW - 1; j++)
  greedyboard[j][0] = greedyboard[j][COL-1] = '|';
 //棋盘的边界
 for (i = 1; i < ROW-1;i++)
  for (j = 1; j < COL-1; j++)
   greedyboard[i][j] = ' ';//初始化棋盘空白部分
 //初始化贪吃蛇坐标
 
  
 head = PRESHAKELEN-1, tail = 0;
 for (i = 0; i < PRESHAKELEN; i++){
  greedyshakelocation[0][i] = 1;
  greedyshakelocation[1][i] = i + 1;
 }
 for (i = 1; i < PRESHAKELEN; i++)
  greedyboard[1][i] = '*';
 greedyboard[1][PRESHAKELEN] = '@';

 //随机出点
 int x1, y1;
 srand(time(0));
 do{
  x1 = rand() % (ROW-2) + 1;
  y1 = rand() % (COL-2 )+ 1;
 }while (greedyboard[x1][y1] != ' ');
 greedyboard[x1][y1] = '*';

 long start;
 //倒计时界面
 /*cout<< "\n\n\t\t游戏即将开始" << endl;
 
 for (i = 3; i > 0; i--){
  start = clock();
  while (clock() - start < 1000);
  system("cls");
  cout << "\n\n\t\t进入倒计时" << i << endl;
 }*/

 //进入游戏
 refresh(greedyboard, grade, gamespeed,point);

 direction = 77;
 newdirection = direction;

 int time;
 int x=0, y=0;//用来确定头移向的下一个位置
 int count = PRESHAKELEN;//用于晋级
 while (1){
  time = 1;
  start = clock();
  while ((time = (clock() - start) <= gamespeed) && !_kbhit());
  if (time){
   _getch();
   newdirection = _getch();
   switch (newdirection){//这是相反按键无效的处理
   case 72:
    if (direction == 80)
     newdirection = direction;
    else direction = newdirection;
    break;
   case 80:
    if (direction == 72)
     newdirection = direction;
    else direction = newdirection;
    break;
   case 75:
    if (direction == 77)
     newdirection = direction;
    else direction = newdirection;
    break;
   case 77:
    if (direction == 75)
     newdirection = direction;
    else direction = newdirection;
    break;
   }
   
  }

  switch (direction){
  case 72:
   x = greedyshakelocation[0][head] - 1;
   y = greedyshakelocation[1][head];//向上
   break;
  case 80:
   x = greedyshakelocation[0][head] + 1;
   y = greedyshakelocation[1][head];//向下
   break;
  case 75:
   x = greedyshakelocation[0][head];
   y = greedyshakelocation[1][head] - 1;//向左
   break;
  case 77:
   x = greedyshakelocation[0][head];
   y = greedyshakelocation[1][head] + 1;//向右
   break;
  
  }
  //如果撞到墙
  if (x == 0 || x == (ROW - 1) || y == 0 || y == (COL - 1)){
   cout << "\t Game over!" << endl;
   return 0;
  }
  //如果撞到自己
  if (greedyboard[x][y] != ' '&&!(x == x1&&y == y1)){
   cout << "\t Game over!" << endl;
   return 0;
  }
  //如果没有意外的话
  if (x == x1&&y == y1){//吃到的话别忘记重新生成一个点
   count++;
   point++;
   if (count>=8){
    grade++;
    count-=8;
    cout << count << endl;
    if (gamespeed >= 100){//设置一个限制
     gamespeed = 500 - grade * 50;
    }
   }
   greedyboard[x][y] = '@';
   greedyboard[greedyshakelocation[0][head]][greedyshakelocation[1][head]] = '*';
   head++;
   head = head % 100;

   greedyshakelocation[0][head] = x;
   greedyshakelocation[1][head] = y;
   do{
    x1 = rand() % (ROW - 2) + 1;
    y1 = rand() % (COL - 2) + 1;
   } while (greedyboard[x1][y1] != ' ');
   greedyboard[x1][y1] = '*';
   refresh(greedyboard, grade,gamespeed,point);

  }//吃到
  else{
   greedyboard[x][y] = '@';
   greedyboard[greedyshakelocation[0][head]][greedyshakelocation[1][head]] = '*';
   greedyboard[greedyshakelocation[0][tail]][greedyshakelocation[1][tail]] = ' ';
   head = (head++) % 100;
   tail = (tail++) % 100;
   greedyshakelocation[0][head] = x;
   greedyshakelocation[1][head] = y;
   refresh(greedyboard,grade,gamespeed,point);

  }//没吃到
 }

 
 return 0;
}