贪吃蛇游戏的程序框架（很久以前的程序框架了拿出来一起看看）

//贪吃蛇游戏的程序框架（很久以前的程序框架了拿出来一起看看）

#include
#include
#include
#include

#define HENG 80
#define SHU 25  //HENG是宽度，SHU是高度
#define TIME 400 //初始速度

void Gotoxy(int x, int y);//光标
void Food(struct SHE *head);//food食物
int Move(struct SHE *head);//用于蛇的移动
int Panduan(struct SHE *head, int x, int y);//用于食物与失败条件的判断
struct SHE *link(struct SHE *head);//蛇身增长
void FreeShe(struct SHE *head);//释放内存
void Gameover(void);//游戏失败画面，如果窗口大小不是80*25导致画面不协调可舍去
void Huitu(struct SHE *head);//绘图

int Fx, Fy;  //食物的位置
int fen;   //得分
int fang; //方向参数
int Tx, Ty;

//构造蛇身
struct SHE
{
    int x;
    int y;
    struct SHE *next;
};

int main(void)
{
    struct SHE *head = NULL;
    int temp;
    int times = TIME;
    char m;

    do
    {
 fen = 0;
 fang = 2;
 temp = fen;
 times = TIME;
 head = NULL;

 head = (struct SHE *)malloc(sizeof(struct SHE));
 head -> x = 40;
 head -> y = 13;
 head -> next = NULL;

 Food(head);

 while (1)
 {
     Huitu(head);
     Sleep(times);
     if (0 == Move(head))
     {
  FreeShe(head);
  Gameover();
  break;
     }
     if (temp < fen)
     {
  Food(head);
  temp = fen;
  if (times > 50)
  {
      times -=10;
  }
  else if (times > 20)
  {
      times -=1;
  }
  else
      ;
     }
 }

 do
 {
     Gotoxy(19,21);
     printf("是否继续？Y/N:");
     scanf(" %c", &m);
     system("cls");//清屏
 } while (m != 'Y' && m != 'y' && m != 'n' && m != 'N');
    } while (m == 'Y' || m == 'y');

    return 0;
}

//绘图
void Huitu(struct SHE *head)
{
    int flag = 1;

    while (head != NULL)
    {
 Gotoxy(head -> x, head -> y);
 if (flag == 1)
 {
     printf("□");
 }
 else if (flag == 2)
 {
     printf("■");
 }
 else
     ;
 Gotoxy(Tx, Ty);
 printf(" ");
 flag++;
 head = head -> next;
    }
}

//用于光标的移动
void Gotoxy(int x, int y)
{ 
  COORD coord; 
  coord.X = x; 
  coord.Y = y; 
  SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}

//食物位置构造
void Food(struct SHE *head)
{
    int flag = 0;
    struct SHE *pr = head;

    do
    {
 srand(GetTickCount()); //基于毫秒级的随机数产生办法，需头文件winbase.h, windows中设计程序可以用windows.h
 Fx = (rand()%40) * 2;
 Fy = (rand()%12) * 2;
 flag = 0;
 pr = head;
 while (pr != NULL) //防止食物位置与蛇形重合
 {
     if (pr -> x == Fx && pr -> y == Fy)
     {
  flag = 1;
  break;
     }
     pr = pr -> next;
 }
    } while (flag == 1);
    Gotoxy(Fx, Fy);
    printf("■");
}

//用于蛇的移动
int Move(struct SHE *head)
{
    char op;
    int tox, toy, flag, temp;

    if (kbhit())  //kbhit函数用于检查当前是否有键盘输入，若有则返回一个非0值，否则返回0，需头文件conio.h
    {
 op = getch();
 switch (op)
 {
     case 'w':
  if (fang != 3)
  fang = 1;
  break;
     case 'd':
  if (fang != 4)
  fang = 2;
  break;
     case 's':
  if (fang != 1)
  fang = 3;
  break;
     case 'a':
  if (fang != 2)
  fang = 4;
  break;
     default:
  break;
 }
    }

    switch (fang)
    {
 case 1:
     toy = (head -> y) - 1;
     tox = (head -> x);
     break;
 case 2:
     tox = (head -> x) + 2;
     toy = (head -> y);
     break;
 case 3:
     toy = (head -> y) + 1;
     tox = (head -> x);
     break;
 case 4:
     tox = (head -> x) - 2;
     toy = (head -> y);
     break;
 default:
     break;
    }
    flag = Panduan(head, tox, toy);
    if (flag == 0)
    {
 return 0; //game over
    }
    else if (flag == 1)
    {
 head = link(head);
 fen++;
    }
    else
    {
 ;
    }
    while (head != NULL)
    {
 temp = head -> x;
 head -> x = tox;
 tox = temp;

 temp = head -> y;
 head -> y = toy;
 toy = temp;

 head = head -> next;
    }
    return 1;
}

//用于食物与失败条件的判断
int Panduan(struct SHE *head, int x, int y)
{

    int flag = 1;

    if (x < 0 || x > HENG - 1 || y < 0 || y > SHU - 1)
    {
 return 0;  //撞墙
    }
    while (head != NULL)
    {
 if (head -> x == x && head -> y == y && flag != 1)
 {
     return 0; //咬到自己
 }
 flag++;
 if (head -> next == NULL)
 {
     Tx = head -> x;
     Ty = head -> y;
 }
 head = head -> next;
    }
    if (x == Fx && y == Fy)
    {
 return 1;//有食物
    }
    return 2;//无异常
}

//蛇身增长
struct SHE *link(struct SHE *head)
{
    struct SHE *p, *pr;

    pr = head;//指针指向链的头head
    p = (struct SHE *)malloc(sizeof(struct SHE));//申请内存，创建新的节点
    if (p == NULL)
    {
 printf("发生错误！！！");
 exit(0);
    }
    if (head == NULL)//如果链是空的，新节点就是链的头
    {
 head = p;
    }
    else
    {
 while (pr -> next != NULL)
 {
     pr = pr -> next;//循环语句，将指针pr移到链的末尾
 }
 pr -> next = p;//新节点加到链的末尾
    }
    p -> x = Tx;////给新节点赋值
    p -> y = Ty;
    p -> next = NULL;///p->next 指向下一个元素，就相当于下一个元素的指针，指向空值，表示是尾。
    return head;
}

//释放内存
void FreeShe(struct SHE *head)
{
    struct SHE *pr = NULL;

    while (head != NULL)
    {
 pr = head;
 head = head -> next;
 free(pr);
    }
}

//游戏失败画面，如果窗口大小不是80*25导致画面不协调可舍去
void Gameover(void)
{
    int i,j;

    int a[SHU][HENG]={插入你想要的内容！}};

    Gotoxy(0, 0);
    for (i = 0; i < SHU; i++)
    {
 for (j = 0; j< HENG; j++)
 {
     if (a[i][j] == 0)
     {
  printf(" ");
     }
     else
     {
  printf("0");
     }
 }
    }

    Gotoxy(19, 20);
    printf("游戏最终得分是 %d 分！！！n", fen);
}