一个PC上的贪吃蛇程序，为以后12864做准备

//-----C-FREE上测试通过-----//
//-----可能有BUG，欢迎指出------//
#include<stdio.h>
#include<windows.h>
#include<conio.h>
#include<time.h>
#include<stdlib.h>

struct COOR
{
   int x;
   int y;
};

struct SNAKE
{
   int length;
   struct COOR body[500];
   char dir;
};
struct SNAKE snake = {3, {6, 0}, 77};
struct FOOD
{
   int x;
   int y;
};
typedef enum {false = 0, true = !false} bool;

#define B_DU 58
#define B_LR 26

struct FOOD food;
char KEY=77; //键盘按键
bool flag_isgameover=false;
bool flag_iseat=false;
int foodcount=0;
int score=0;
int delaytime=700;
int gamelevel=1;

/*************设置光标位置*****************/
void gopos(int x,int y)
{
   COORD pos;       //COORD系统已定义的一个关于光标的结构体
   HANDLE han;     //新建一个句柄
   pos.X=x;         //为结构体赋初值
   pos.Y=y;
   han=GetStdHandle(STD_OUTPUT_HANDLE);   //将获得的输入输出状态的函数句柄赋给已经新建的那个
   SetConsoleCursorPosition(han,pos);     //windows api 设置光标位置函数
}

void creatmap()
{
   int x,y;
   for(x=0;x<=B_DU;x+=2)
   {
       gopos(x,0);
       printf("■");
       gopos(x,26);
       printf("■");
   }

   for(y=0;y<=B_LR;y++)
   {
       gopos(0,y);
       printf("■");
       gopos(58,y);
       printf("■");
   }
}

void initconlose()
{
   HANDLE han;               //新建一个句柄
   srand((long)time(NULL)); //使用time函数做随机数种子【time：函数返回当前时
                              //间，如果发生错误返回零。如果给定参数time ，那么
                              //当前时间存储到参数time中。】
    system ("mode con: cols=60 lines=29");//显示模式
    system ("title 贪吃蛇");
   han=GetStdHandle(STD_OUTPUT_HANDLE);   //将获得的输入输出状态的函数句柄赋给已经新建的那个
    SetConsoleTextAttribute(han, 0xe); //设置控制台显示颜色
}

void initsnake()            //初始化蛇身
{
   int i;
   for(i=0;i<snake.length;i++)
   {
       snake.body[i].x=6-i*2;
       snake.body[i].y=1;
       gopos(snake.body[i].x,snake.body[i].y);
       printf("■");
   }
}
void setlevel()
{
   if(foodcount==15)
   {
       foodcount=0;
       gamelevel++;
       delaytime-=50;
   }
   gopos(0,27);
   printf("score=%d",score);
   gopos(10,27);
   printf("等级=%d",gamelevel);
}
void initfood()
{
   int i;
   while (1)
   {
       food.x = (rand() % 28 + 1) * 2;
        food.y = rand() % 24 +1;
       for(i=0;i<snake.length;i++)
       {
           if(food.x==snake.body[i].x&&food.y==snake.body[i].y)
               break;
       }
       if(i==snake.length)
           break;
   }
   gopos(food.x,food.y);
   printf("■");
   flag_iseat=false;
   setlevel();
}

int jbitself(int x,int y)        //判断蛇是否咬到自己
{
   int i;
   for(i=1;i<snake.length;i++)
   {
       if(x==snake.body[i].x&&y==snake.body[i].y)
           return 1;            //咬到了自己
   }
   return 0;
}

int jgameover()
{
   int x=snake.body[0].x;
   int y=snake.body[0].y;
   if(jbitself(x,y)||x==0||x==B_DU||y==0||y==B_LR)
       return 1;           //游戏结束
   else
       return 0;           //没有结束
}

void move(char key)
{
   int i;
   int s_x=snake.body[0].x;
   int s_y=snake.body[0].y;

   switch(key)
   {
       case 72:s_y--;break;
       case 75:s_x-=2;break;
       case 77:s_x+=2;break;
       case 80:s_y++;break;
       default:break;
   }

   if(jgameover())
   {
       flag_isgameover=true;
   }
   else
   {
       if(s_y==food.y&&s_x==food.x)
           {
               score=score+gamelevel;
               foodcount++;
               snake.length++;
               flag_iseat=true;
           }
           else
           {
               gopos(snake.body[snake.length-1].x,snake.body[snake.length-1].y);
                printf(" ");
           }

       gopos(s_x,s_y);
       printf("■");
       for(i=snake.length-1;i>0;i--)
       {
           snake.body[i]=snake.body[i-1];
       }
       snake.body[0].x=s_x;
       snake.body[0].y=s_y;
       KEY=key;
   }

}

int play()
{
   char key1=0,key2=0;
   while(key1!=27&&flag_isgameover==false)
   {
       Sleep(delaytime);
       if(kbhit())
       {
           key1=getch();
           if(key1<=0)
           {
               key2=getch();
           }
            if (key2 == 72 || key2 == 75 || key2 == 77 || key2 == 80)//说明是方向键
            {
                if (key2 != KEY && key2 + KEY != 152)//说明是使蛇转向的方向键
                    move(key2);
                else
                    move(KEY);
            }
            else                                      //暂停
            {
                gopos(10,10);
               printf("游戏暂停中，请按回车键继续游戏！");
               key1=getchar();
               gopos(10,10);
               printf("                                ");
            }

       }
       else
           move(KEY);
       if(flag_iseat==true)
           initfood();
       if(flag_isgameover==true)
       {
           gopos(10,10);
           printf("游戏结束,请按任意键结束程序！");
           key1=getch();
           break;
       }
   }
   return;

}

int main()
{
   initconlose();
   creatmap();
   initsnake();
   initfood();
   play();
   return 0;

}