//
#include?"stdafx.h"
#include?<stdio.h>
#include?<windows.h>
#include?<time.h>
#include?<conio.h>
#define?frame_height?20?//define?map?size
#define?frame_width?40
#define?UP?'w'?//define?operate?key
#define?DOWN?'s'
#define?LEFT?'a'
#define?RIGHT?'d'
int?i,?j,?k;
char?ch?=?UP;?//initial?direction
int?grow?=?0;?//flag:?if?snake?grow
struct?Food?{
int?x;
int?y;
}food;
struct?Snake?{
int?x[50];
int?y[50];
int?len;
int?speed;
}snake;?//snake[0]?is?head
void?init_map(void);
void?update_food(void);
void?move_snake(void);
int?is_alive(void);
void?get_speed(void);
void?gotoxy(int?x,?int?y);
int?main()
{
init_map();//初始化地圖
while?(1)
{
update_food();
//是否產生食物
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("Game?Over!");
_getch();
return?0;
}
//initialize
void?init_map(void)
{
//initial?food
srand(time(NULL));
food.x?=?rand()?%?(frame_height?-?2)?+?1;
food.y?=?rand()?%?(frame_width?-?2)?+?1;
gotoxy(food.x,?food.y);
printf("!");
//initial?snake
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("@");
}
//initial?bar
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("#");
}
}
//generate?food
void?update_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;
}
}
//move?snake
void?move_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)
{
case?UP:snake.x[0]--;?break;
case?DOWN:snake.x[0]++;?break;
case?LEFT:snake.y[0]--;?break;
case?RIGHT:snake.y[0]++;?break;
default:break;
}
gotoxy(snake.x[0],?snake.y[0]);
printf("@");
grow?=?0;
gotoxy(frame_height,?0);
}
//is?alive
int?is_alive(void)
{
if?(snake.x[0]?==?0?||?snake.x[0]?==?frame_height?-?1?||?snake.y[0]?==?frame_width?-?1?||?snake.y[0]?==?0)
return?0;
for?(k?=?1;?k<snake.len;?k++)
if?(snake.x[k]?==?snake.x[0]?&&?snake.y[k]?==?snake.y[0])
return?0;
return?1;
}
//speed?up
void?get_speed(void)
{
if?(snake.len?<=?6)
snake.speed?=?200;
else?if?(snake.len?<=?10)
snake.speed?=?100;
else?if?(snake.len?<=?20)
snake.speed?=?50;
else?if?(snake.len?<=?30)
snake.speed?=?30;
else?snake.speed?=?20;
}
//move?cursor
void?gotoxy(int?x,?int?y)
{
HANDLE?hout;
COORD?cor;
hout?=?GetStdHandle(STD_OUTPUT_HANDLE);
cor.X?=?y;
cor.Y?=?x;
SetConsoleCursorPosition(hout,?cor);
}