#include<Windows.h>
COORD cor;
cor.X = 0;
cor.Y =2;
//光標位置更新到(0,2)
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cor);

#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<Windows.h>
#include<conio.h>
#define WIDE 60
# define HIGH 20
//1設(shè)置地圖邊界
//2初始化蛇的初始坐標、以及事務
//3、將蛇和食物顯示
//4 蛇的移動（WASD）
/*
 規(guī)則：
 蛇碰到強死掉
 蛇碰到自己死掉
 蛇碰到食物，身體增長，增加分數(shù)
*/
//5.蛇死掉顯示分數(shù)
//存儲蛇的每一節(jié)的坐標
typedef struct _body
{
 int x;
 int y;
}BODY;
typedef struct _snake
{
 //存儲蛇的身體
 BODY list[WIDE * HIGH];//身體的每一節(jié)坐標
 int size;//記錄身體長度
 BODY food;//食物的位置
 int dx;//x移動方向
 int dy;//y移動方向
 //記錄設(shè)尾位置
 int lastx;
 int lasty;
}SNAKE;
 
//初始化食物坐標
void initFood(SNAKE* s)
{
 srand(time(NULL));
 s->food.x = rand() % WIDE;
 s->food.y = rand() % HIGH;
 
}
 
//初始化蛇
void initSnake(SNAKE* s)
{
 //頭部
 s->list[0].x = WIDE / 2;
 s->list[0].y = HIGH / 2;
 //第一節(jié)
 s->list[1].x = WIDE / 2-1;
 s->list[1].y = HIGH / 2;
 //記錄身體大小
 s->size = 2;
 //初始化食物的坐標
 initFood(s);
 //默認向右移動
 s->dx = 1;
 s->dy = 0;
}
//顯示蛇
void showUi(SNAKE* s)
{
 /*
 每次顯示都要設(shè)置光標的位置
 
 */
 //顯示蛇
 COORD cor;
 for (int i = 0; i < s->size; ++i)
 {
 //設(shè)置光標的位置
 
 cor.X = s->list[i].x;
 cor.Y = s->list[i].y;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),cor);
 
 //蛇頭
 if (i == 0)
 {
  printf("@");
  continue;
 }
 printf("*");
 }
 //顯示食物
 cor.X = s->food.x;
 cor.Y = s->food.y;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),cor);
 printf("#");
 //清除掉蛇尾
 cor.X = s->lastx;
 cor.Y = s->lasty;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cor);
 printf(" ");
 
}
//更新的蛇的坐標
void moveSnake(SNAKE* s)
{
    //記錄下蛇尾的位置
 s->lastx = s->list[s->size - 1].x;
 s->lasty = s->list[s->size - 1].y;
 for (int i = s->size-1; i >0; --i)
 {
 s->list[i].x = s->list[i - 1].x;
 s->list[i].y = s->list[i - 1].y;
 }
 s->list[0].x += s->dx;
 s->list[0].y += s->dy;
 
}
 
void controlSnake(SNAKE* s)
{
 char key=0;
 //判斷按鍵
 while (_kbhit())
 {
 key = _getch();
 }
 switch (key)
 {
 case 'a':
 s->dx = -1;
 s->dy = 0;
 break;
 case 's':
 s->dx = 0;
 s->dy = 1;
 break;
 case 'd':
 s->dx = 1;
 s->dy = 0;
 break;
 case 'w':
 s->dx = 0;
 s->dy = -1;
 break;
 default:
 break;
 }
}
 
//游戲結(jié)束
void gameEnd(SNAKE* s)
{
 COORD cor;
 cor.X = 0;
 cor.Y = HIGH + 1;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cor);
 printf("游戲結(jié)束，最終得分為%d\n", (s->size - 2) * 10);
 //直接退出程序
 exit(0);
}
//蛇吃到自己
void snakeEatSelf(SNAKE* s)
{
 for (int i = 1; i < s->size; ++i)
 {
 if (s->list[0].x == s->list[i].x && s->list[0].y == s->list[i].y)
 {
  gameEnd(s);
 }
 }
}
//吃到食物
void snakeEatFood(SNAKE* s)
{
 if (s->list[0].x == s->food.x && s->list[0].y == s->food.y)
 {
 //食物重置
 initFood(s);
 //蛇加長
 s->size++;//增加后的坐標在移動的時候會自己進行加長
 }
}
 
//開始游戲
void startGame(SNAKE* s)
{
 //每次對蛇頭是否碰墻進行判斷
 while (s->list[0].x<WIDE&&s->list[0].x>=0&&s->list[0].y<HIGH&&s->list[0].y>0)
 {
 //控制方向
  controlSnake(s);
 //更新蛇的坐標
 moveSnake(s);
 //system("cls");//清屏
 //蛇移動
 showUi(s);
 //判斷蛇是否碰到自己
 snakeEatSelf(s);
 //吃到食物
 snakeEatFood(s);
 //蛇的速度可以通過睡眠時間進行調(diào)整
 Sleep(200);
 
 }
 gameEnd(s);
}
//初始化邊界
void initWall()
{
 COORD cor;
 for (int i = 0; i <= WIDE; ++i)
 {
 for (int j = 0; j <= HIGH; ++j)
 {
  if (i == 0 || i == WIDE||j==0||j==HIGH)
  {
 
  COORD cor;
  cor.X = i;
  cor.Y = j;
  SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cor);
  printf("+");
  }
 }
 }
}
//隱藏光標
void hideCursor()
{
 CONSOLE_CURSOR_INFO cursor;
 cursor.bVisible = FALSE;
 cursor.dwSize = sizeof(cursor);
 HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
 SetConsoleCursorInfo(handle, &cursor);
}
int main()
{
 //隱藏光標
 hideCursor();
 //初始化地圖
 initWall();
 //蛇類型定義
 SNAKE* snake = (SNAKE*)malloc(sizeof(SNAKE));
 
 //初始化蛇和食物
 initSnake(snake);
 //顯示蛇
 showUi(snake);
 //開始游戲
 startGame(snake);
 
 
 free(snake);
 //程序在HIGH+1行后面輸出
 COORD cor;
 cor.X = 0;
 cor.Y =HIGH+2;
 SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cor);
 return 0;
}