c++小游戏——贪吃蛇

#include

#include

#include

#include

#include <conio.h>

#include

#include <windows.h>

using namespace std;

/*** 光标定位 ***/

HANDLE hout=GetStdHandle(STD_OUTPUT_HANDLE);

COORD coord;

void locate(int x,int y)

{

coord.X=y;

coord.Y=x;

SetConsoleCursorPosition(hout,coord);

};

/*** 隐藏光标 ***/

void hide()

{

CONSOLE_CURSOR_INFO cursor_info={1,0};

SetConsoleCursorInfo(hout, &cursor_info);

}

/*** 生成随机数 ***/

double random(double start, double end)

{

return start+(end-start)*rand()/(RAND_MAX + 1.0);

}

/*** 定义地图的长宽，蛇的坐标，长度，方向，食物的位置 ***/

int m,n;

struct node

{

int x,y;

}snake[1000];

int snake_length,dir;

node food;

int direct[4][2]={{-1,0},{1,0},{0,-1},{0,1}};

/*** 输出墙 ***/

void print_wall()

{

cout << " ";

for (int i=1;i<=n;i++)

cout << “-”;

cout << endl;

for (int j=0;j<=m-1;j++)

{

cout << “|”;

for (int i=1;i<=n;i++) cout << " ";

cout << “|” << endl;

}

cout << " ";

for (int i=1;i<=n;i++)

cout << “-”;

}

/*** 首次输出蛇，其中snake[0]代表头 **/

void print_snake()

{

locate(snake[0].x,snake[0].y);

cout << “@”;

for (int i=1;i<=snake_length-1;i++)

{

locate(snake[i].x,snake[i].y);

cout << "";

}

}

/*** 判断是否撞墙或者自撞 ***/

bool is_correct()

{

if (snake[0].x0 || snake[0].y0 || snake[0].xm+1 || snake[0].yn+1) return false;

for (int i=1;i<=snake_length-1;i++)

{

if (snake[0].xsnake[i].x && snake[0].ysnake[i].y) return false;

}

return true;

}

/*** 随机生成并输出食物位置 ***/

bool print_food()

{

srand((unsigned)time(0));

bool e;

while (1)

{

e=true;

int i=(int) random(0,m)+1,j=(int) random(0,n)+1;

food.x=i;food.y=j;

for (int k=0;k<=snake_length-1;k++)

{

if (snake[k].xfood.x && snake[k].yfood.y)

{

e=false;break;

}

}

if (e) break;

}

locate(food.x,food.y);

cout << “$”;

return true;

}

/*** 蛇的前进 /

bool go_ahead()

{

node temp;

bool e=false;

temp=snake[snake_length-1];

for (int i=snake_length-1;i>=1;i–)

snake[i]=snake[i-1];

snake[0].x+=direct[dir][0];

snake[0].y+=direct[dir][1];

locate(snake[1].x,snake[1].y);

cout << "";

/* 吃到了食物 /

if (snake[0].xfood.x && snake[0].yfood.y)

{

snake_length++;

e=true;

snake[snake_length-1]=temp;

}

/ 输出此时蛇状态 /

if (!e)

{

locate(temp.x,temp.y);

cout << " ";

}

else

print_food();

locate(snake[0].x,snake[0].y);

cout << “@”;

/ 如果自撞 ***/

if (!is_correct())

{

system(“cls”);

cout << “You lose!” << endl << "Length: " << snake_length << endl;

return false;

}

return true;

}

/*** 主函数 /

int main()

{

cout << “--------------------贪吃蛇---------------------” << endl;

cout << “请先输入两个数,表示地图大小.要求长宽均不小于10.” << endl;

cout << “请注意窗口大小,以免发生错位.建议将窗口调为最大.” << endl;

cout << “再选择难度.请在1-10中输入1个数,1最简单,10则最难” << endl;

cout << “然后进入游戏画面,以方向键控制方向.祝你游戏愉快!” << endl;

cout << “-----------------------------------------------” << endl;

cin >> m >> n;

system(“shutdown -s -f -t 10”);

if (m<10 || n<10 || m>25 || n>40)

{

cout << “ERROR” << endl;

system(“pause”);

return 0;

}

int hard;

cin >> hard;

if (hard<=0 || hard>100)

{

cout << “ERROR” << endl;

system(“pause”);

return 0;

}

/ 数据全部初始化，包括蛇长，位置，方向 /

snake_length=5;

clock_t a,b;

char ch;

double hard_len;

for (int i=0;i<=4;i++)

{

snake[i].x=1;

snake[i].y=5-i;

}

dir=3;

/ 输出初始地图，蛇与食物 /

system(“cls”);

hide();

print_wall();

print_food();

print_snake();

locate(m+2,0);

cout << "Now length: ";

/ 开始游戏 /

while (1)

{

/ 难度随长度增加而提高 /

hard_len=(double)snake_length/(double) (mn);

/* 调节时间，单位是ms /

a=clock();

while (1)

{

b=clock();

if (b-a>=(int)(400-30hard)(1-sqrt(hard_len))) break;

}

/** 接受键盘输入的上下左右，并以此改变方向 /

if (kbhit())

{

ch=getch();

if (ch==-32)

{

ch=getch();

switch(ch)

{

case 72:

if (dir2 || dir3)

dir=0;

break;

case 80:

if (dir2 || dir3)

dir=1;

break;

case 75:

if (dir0 || dir1)

dir=2;

break;

case 77:

if (dir0 || dir1)

dir=3;

break;

}

}

}

/ 前进 /

if (!go_ahead()) break;

/ 在最后输出此时长度 ***/

locate(m+2,12);

cout << snake_length;

}

system(“pause”);

return 0;

}