经典贪吃蛇

·once· · 2021-08-16 14:44:31 · 个人记录

• 经典贪吃蛇

  //WASD控制/开始游戏
  #include <stdio.h>
  #include <stdlib.h>
  #include <time.h>
  #include <conio.h>
  #include <windows.h>
  #define W 32
  #define H 22
  const int SIZE_SK = 30*20;
  HANDLE hout;
  COORD pos= {0, 0};
  CONSOLE_CURSOR_INFO cur_info = {1, 0};
  struct snake {
  short x, y; //节点坐标
  short md; //节点运动方向
  short num; //节点内容
  int col; //节点颜色
  } snake[30*20];
  const short dx[4] = {-1, 1, 0, 0}; //方向?
  const short dy[4] = {0, 0, -1, 1}; //方向?
  short gamemap[W][H];
  short head, tail, score=0;
  void initmap(int tm);
  void createFood(void);
  int getkeys(void);
  int move(int idx);
  void pntSnake(int i);
  void drawEdge(void);
  void gameinfo(char *s, int n);
  int main(void)
  {
  int tm = 150; //刷新间隔150毫秒?
  hout = GetStdHandle(STD_OUTPUT_HANDLE);
  SetConsoleCursorInfo(hout, &cur_info); //隐藏光标?
  system("COLOR 2f");
  initmap(tm);
  return 0;
  }
  void initmap(int tm)
  {
  short x, y, i, j;
  int index, tmp, ret_m;
  while (1){
  head=0;
  tail=-1;
  score=0;
  //初始化蛇节点随机颜色
  srand(time(0));
  for (i=0; i<SIZE_SK; i++)
  snake[i].col = 0x20;
  //初始化地图数组
  for (i=0; i<W; i++)
  for (j=0; j<H; j++)
  gamemap[i][j] = 0;
  system("cls");
  //绘制边界?
  drawEdge();
  //打印蛇头
  srand(time(0));
  do {
  x = rand()%(W-2) + 1;
  y = rand()%(H-2) + 1;
  } while (gamemap[x][y] != 0); //只在空白处生成?
  snake[head].x = x;
  snake[head].y = y;
  gamemap[x][y] = snake[head].num = 1;
  pos.X = x*2;
  pos.Y = y;
  SetConsoleCursorPosition(hout, pos);
  printf("█");
  //打印食物
  createFood();
  while ((index=getkeys()) == 4)
  Sleep(500);
  //循环开始
  while (1){
  ret_m = move(index);
  if (ret_m == 1){
  pos.X = 0; pos.Y = H;
  SetConsoleCursorPosition(hout, pos);
  printf("哎呀，挂了哦 ^_^");
  break;
  }
  else if (ret_m == 2){
  pos.X = 0; pos.Y = H;
  SetConsoleCursorPosition(hout, pos);
  printf("哎呀，超神了 ^_^");
  break;
  }
  Sleep(tm);
  if ((tmp = getkeys()) != 4)
  index = tmp;
  }
  //菜单代码
  puts(" 按w\\s\\a\\d 继续玩，退出请关闭我");
  getch();
  }
  }
  void createFood(void)
  {
  short x, y;
  srand(time(0));
  do {
  x = rand()%(W-2) + 1;
  y = rand()%(H-2) + 1;
  } while (gamemap[x][y] != 0);
  gamemap[x][y] = 2;
  pos.X = x*2; pos.Y = y;
  SetConsoleCursorPosition(hout, pos);
  SetConsoleTextAttribute(hout, 0xccccc);
  printf("█");
  }
  int getkeys(void) //获取方向键?
  {
  char ch;
  while(kbhit()){
  ch = getch();
  if(ch == 'w')
  return 2;
  if(ch == 's')
  return 3;
  if(ch == 'a')
  return 0;
  if(ch == 'd')
  return 1;
  while (kbhit());
  }
  return 4;
  }
  int move(int idx)
  {
  int newx, newy, pt_tail, i;
  newx = snake[head].x + dx[idx];
  newy = snake[head].y + dy[idx];
  switch (gamemap[newx][newy]){
  case 0:
  if ((head = ++head%SIZE_SK) != tail){ //不相等即蛇节点队列未满
  snake[head].x = newx;
  snake[head].y = newy;
  snake[head].num = 1;
  gamemap[newx][newy] = 1;
  tail = ++tail%SIZE_SK;
  snake[tail].num = 0; //清除尾部，打印空字符
  gamemap[snake[tail].x][snake[tail].y] = 0;
  snake[head].md = idx; //存储移动方向?
  pt_tail = tail - 1;
  }
  else
  return 2; //回合结束标记2代表蛇填满空间
  break;
  case 2:
  if ((head = ++head%SIZE_SK) != tail){ //不相等即蛇节点队列未满
  snake[head].x = newx; //head+1后存储新坐标为蛇头?
  snake[head].y = newy;
  snake[head].num = 1;
  gamemap[newx][newy] = 1;
  snake[head].md = idx; //存储移动方向
  pt_tail = tail = tail%SIZE_SK;
  score++;
  createFood();
  }
  break;
  case 3:
  return 1; //遇到墙壁
  case 1:
  return 1; //遇到自身
  default: ;
  }
  //打印蛇
  if (pt_tail == -1)
  pt_tail++;
  if (pt_tail < head){ //尾巴在头部后面（这两者是数组索引）?
  for (i=pt_tail; i<=head; i++){
  pntSnake(i); //打印?
  }
  }
  else{
  for (i=pt_tail; i<SIZE_SK; i++)
  pntSnake(i);
  for (i=0; i<=head; i++)
  pntSnake(i);
  }
  gameinfo(" 分数", score);
  return 0;
  }
  void pntSnake(int i)
  {
  //转换x坐标：内部是连续整数，打印时一个字符占位2，所以要2x
  pos.X = snake[i].x * 2;
  pos.Y = snake[i].y;
  SetConsoleCursorPosition(hout, pos);
  if (snake[i].num == 0){
  putchar('\0'); //清除蛇尾
  putchar('\0');}
  else if (snake[i].num == 1){
  //下面函数第二个参数低4位控制前景色，高4位控制背景色，共8位?
  SetConsoleTextAttribute(hout, snake[i].col);
  printf("█");
  }
  }
  void drawEdge(void)
  {
  int i;
  for (i=0; i<W; i++){
  pos.X = i*2; pos.Y = 0;
  SetConsoleCursorPosition(hout, pos);
  printf("█");
  gamemap[i][pos.Y] = 3;
  pos.Y = H-1;
  SetConsoleCursorPosition(hout, pos);
  printf("█");
  gamemap[i][H-1] = 3;
  }
  for (i=1; i<H-1; i++){
  pos.X = 0; pos.Y = i;
  SetConsoleCursorPosition(hout, pos);
  printf("█");
  gamemap[pos.X][i] = 3;
  pos.X = (W-1)*2;
  SetConsoleCursorPosition(hout, pos);
  printf("█");
  gamemap[W-1][i] = 3;
  }
  }
  void gameinfo(char *s, int n)
  {
  pos.X = 0; pos.Y = H;
  SetConsoleCursorPosition(hout, pos);
  SetConsoleTextAttribute(hout, 0x2f);
  printf(" 贪吃蛇");
  printf(" %s: %d", s, n);
  }