#include?
#include?
#include?
#include?
#include?
#include?
#define?X_BORDER?70
#define?Y_BORDER?30
#define?INTERVAL?150
#define?FAST_INTERVAL?50

void?gotoxy（HANDLE?int?int）;
void?drawBorderUI（HANDLE）;
void?gameStart（HANDLE）;
void?initMoveSnake（HANDLE?int）;
void?generateBean（HANDLE?int）;
void?gameOver（HANDLE）;

struct?beans?{
????int?x;
????int?y;
};
struct?snakeNode?{
????int?x;
????int?y;
};
struct?beans?bean;
struct?snakeNode?node[X_BORDER?*?Y_BORDER];
int?score?=?0?highscore?=?0?snakeLength?=?2?retry?=?0;

/******************************************/

int?main（int?argc?char*?argv[]）
{
????int?direction?=?0;
????HANDLE?hOut?=?GetStdHandle（STD_OUTPUT_HANDLE）;
????gameStart（hOut）;
????RETRY:
????drawBorderUI（hOut）;
????initMoveSnake（hOut?direction）;

????if?（retry）?{
????????system（“cls“）;
????????goto?RETRY;
????}
????gotoxy（hOut?0?Y_BORDER?+?1）;
????return?0;
}

void?gotoxy（HANDLE?hOut?int?x?int?y）
{
????COORD?pos;
????pos.X?=?x;
????pos.Y?=?y;
????SetConsoleCursorPosition（hOut?pos）;
}

void?gameStart（HANDLE?hOut）
{
????CONSOLE_CURSOR_INFO?cursor_info?=?{1?0};
????SetConsoleCursorInfo（hOut?&cursor_info）;?//?hide?cursor
????gotoxy（hOut?X_BORDER?/?2?-?11?Y_BORDER?/?2）;
????printf（“Press?Space?to?Start?Game“）;
????gotoxy（hOut?0?0）;
????while?（getch（）?!=?VK_SPACE）?;
????system（“cls“）;
}

void?drawBorderUI（HANDLE?hOut）
{
????gotoxy（hOut?0?0）;
????????for?（int?i?=?0;?i?????gotoxy（hOut?0?Y_BORDER）;
????????for?（int?i?=?0;?i?????for?（int?i?=?0;?i?????????gotoxy（hOut?0?i）;?putchar（‘X‘）;}
????for?（int?i?=?0;?i?????????gotoxy（hOut?X_BORDER?i）;?putchar（‘X‘）;}
????gotoxy（hOut?X_BORDER?+?5?Y_BORDER?/?2?-?3）;
????printf（“W?S?A?D?to?Control?Snake?“）;
????gotoxy（hOut?X_BORDER?+?5?Y_BORDER?/?2?-?1）;
????printf（“?Space?to?Switch?Speed“）;
????gotoxy（hOut?X_BORDER?+?5?Y_BORDER?/?2?+?1）;
????printf（“????Highscore?%d“?highscore）;
}

void?initMoveSnake（HANDLE?hOut?int?direction）
{
????int?fast?=?0;
????memset（node?0?sizeof（node））;
????gotoxy（hOut?X_BORDER?/?2?-?1?Y_BORDER?/?2）;
????putchar（‘O‘）;
????putchar（‘@‘）;
????node[0].x?=?X_BORDER?/?2;
????node[1].x?=?X_BORDER?/?2?-?1;
????node[0].y?=?node[1].y?=?Y_BORDER?/?2;
????direction?=?6;??//?6?right?2?down?8?up?4?left

????generateBean（hOut?snakeLength）;
????for?（;?;）?{
????????while?（kbhit（））?{
????????????switch?（getch（））?{
????????????????case?‘w‘:?if?（direction?!=?2）?direction?=?8;?break;
????????????????case?‘s‘:?if?（direction?!=?8）?direction?=?2;?break;
????????????????case?‘a‘:?if?（direction?!=?6）?direction?=?4;?break;
????????????????case?‘d‘:?if?（direction?!=?4）?direction?=?6;?break;
????????????????case?VK_SPACE:?fast?=?1?-?fast;
????????????????default:?;
????????????}
????????}
???????