#include<stdio.h>

#include<windows.h>

#include<time.h>

#include<conio.h>

#defineframe_height20//definemapsize

#defineframe_width40

#defineUP'w'//defineoperatekey

#defineDOWN's'

#defineLEFT'a'

#defineRIGHT'd'

inti,j,k;

charch=UP;//initialdirection

intgrow=0;//flag:ifsnakegrow

structFood{

intx;

inty;

}food;

structSnake{

intx[50];

inty[50];

intlen;

intspeed;

}snake;//snake[0]ishead

voidinit_map(void);

voidupdate_food(void);

voidmove_snake(void);

intis_alive(void);

voidget_speed(void);

voidgotoxy(intx,inty);

intmain()

{

init_map();//初始化地圖

while(1)

{

update_food();//是否產(chǎn)生食物

get_speed();//獲取速度

move_snake();//移動蛇身

Sleep(snake.speed);//移動速度

if(!(is_alive()))//蛇的死活(撞墻或自食)

break;

}

printf("GameOver!");

getch();

return0;

}

//initialize

voidinit_map(void)

{

//initialfood

srand(time(NULL));

food.x=rand()%(frame_height-2)+1;

food.y=rand()%(frame_width-2)+1;

gotoxy(food.x,food.y);

printf("!");

//initialsnake

snake.x[0]=frame_height/2;

snake.y[0]=frame_width/2;

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

printf("@");

snake.len=3;

snake.speed=200;

for(k=1;k<snake.len;k++)

{

snake.x[k]=snake.x[k-1]+1;

snake.y[k]=snake.y[k-1];

gotoxy(snake.x[k],snake.y[k]);

printf("@");

}

//initialbar

for(j=0;j<frame_width;j++)

{

gotoxy(0,j);

printf("#");

gotoxy(frame_height-1,j);

printf("#");

}

for(i=1;i<frame_height-1;i++)

{

gotoxy(i,0);

printf("#");

gotoxy(i,frame_width-1);

printf("#");

}

}

//generatefood

voidupdate_food()

{

if(snake.x[0]==food.x&&snake.y[0]==food.y)

{

srand(time(NULL));

food.x=rand()%(frame_height-2)+1;

food.y=rand()%(frame_width-2)+1;

gotoxy(food.x,food.y);

printf("!");

snake.len++;

grow=1;

}

}

//movesnake

voidmove_snake()

{

if(kbhit())

ch=getch();

if(!grow)

{

gotoxy(snake.x[snake.len-1],snake.y[snake.len-1]);

printf("");

}

for(k=snake.len-1;k>0;k--)

{

snake.x[k]=snake.x[k-1];

snake.y[k]=snake.y[k-1];

}

switch(ch)

{

caseUP:snake.x[0]--;break;

caseDOWN:snake.x[0]++;break;

caseLEFT:snake.y[0]--;break;

caseRIGHT:snake.y[0]++;break;

default:break;

}

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

printf("@");

grow=0;

gotoxy(frame_height,0);

}

//isalive

intis_alive(void)

{

if(snake.x[0]==0||snake.x[0]==frame_height-1||snake.y[0]==frame_width-1||snake.y[0]==0)

return0;

for(k=1;k<snake.len;k++)

if(snake.x[k]==snake.x[0]&&snake.y[k]==snake.y[0])

return0;

return1;

}

//speedup

voidget_speed(void)

{

if(snake.len<=6)snake.speed=200;

elseif(snake.len<=10)snake.speed=100;

elseif(snake.len<=20)snake.speed=50;

elseif(snake.len<=30)snake.speed=30;

elsesnake.speed=20;

}

//movecursor

voidgotoxy(intx,inty)

{

HANDLEhout;

COORDcor;

hout=GetStdHandle(STD_OUTPUT_HANDLE);

cor.X=y;

cor.Y=x;

SetConsoleCursorPosition(hout,cor);

}