//飞翔的小鸟
#include<stdio.h>//C语言标准头文件
#include<graphics.h>//图形库头文件
#include<conio.h>//按键处理
#include<time.h>//随机函数
#include<mmstream.h>//多媒体库
#pragma comment(lib,"winmm.lib")
/********************************************
          数据设计
*********************************************/
IMAGE background;
IMAGE bigBird[2]; //bigBird[0] bigBird[1]
IMAGE endImg[2];
IMAGE up[2];
IMAGE down[2];
HWND hwnd;//句柄-表示的是窗口的意思
//结构体
struct bird
{
  int x;//鸟的x和y坐标
  int y;
  int speed; //鸟的速度
};
//鸟的属性
struct bird myBird = { 124,304,100 };
//加载资源：把图片和变量名绑定在一起
void loadResource()
{
  //先加载掩码如 再加载背景图
  loadimage(&background, "./images/background.bmp");
  loadimage(&bigBird[0], "./images/birdy.bmp",48,48);
  loadimage(&bigBird[1], "./images/bird.bmp",48,48);
  loadimage(&endImg[0], "./images/endy.bmp");
  loadimage(&endImg[1], "./images/end.bmp");

  loadimage(&down[0], "./images/downy.bmp");
  loadimage(&down[1], "./images/down.bmp");

  loadimage(&up[0], "./images/upy.bmp");
  loadimage(&up[1], "./images/up.bmp");
}
/********************************************
          鸟的模块
          1.绘制鸟的过程
          2.按键操作控制鸟的过程
          3.音乐部分---多线程知识
          要开辟一个线程来播放音乐，要不他会影响背景的效果
*********************************************/
//绘制鸟的过程
void drawBigbird(int x ,int y)
{
  //贴图（掩码图）
  putimage(x, y, &bigBird[0], SRCAND);
  putimage(x, y, &bigBird[1], SRCPAINT);
}
//线程处理函数---》C语言中函数指针
DWORD WINAPI playMusic(LPVOID pVoid)
{
  mciSendString("open jump.mp3", 0, 0, 0);
  mciSendString("play jump.mp3 wait", 0, 0, 0);
  mciSendString("clos jump.mp3", 0, 0, 0);
  return 0;
}
/********************************************
        柱子部分
        1.画柱子
        2.初始化柱子
        3.移动柱子
*********************************************/
struct pillar
{ 
  //上面柱子的属性
  int x ;
  int y ;
  int h ;
  //根据上面柱子的属性能够退出下面柱子的属性
  //Height - h
};
struct pillar zhuzi[3];
//初始化柱子
void initPillar(struct pillar zhuzi[], int i)
{
  zhuzi[i].h = rand() % 100 + 160;
  zhuzi[i].y = 0;
  zhuzi[i].x = 288; 
}
//画柱子
void drawPillar(struct pillar zhuzi)
{
  //上面的柱子
  putimage(zhuzi.x, 0, 52, zhuzi.h,&down[0],0,320 - zhuzi.h,SRCAND);
  putimage(zhuzi.x, 0, 52, zhuzi.h, &down[1], 0, 320 - zhuzi.h, SRCPAINT);
  //下面的柱子
  putimage(zhuzi.x, 512-(320-zhuzi.h), 52, 320-zhuzi.h, &up[0], 0,0, SRCAND);
  putimage(zhuzi.x, 512 - (320 - zhuzi.h), 52, 320 - zhuzi.h, &up[1], 0, 0, SRCPAINT);

}
/********************************************
      通用性技术：
      1.并发编程
      2.网络编程
      3.数据库编程
*********************************************/
//按键交互
void keyDown()
{
  char userKey = '\0';
  userKey = _getch();
  //暂停功能
  if (userKey == ' ')
  {
    while (_getch() != ' ');
  }
  switch (userKey)
  {
  case 'w':
  case 'W':
  case 72:
    myBird.y -= myBird.speed;
    CreateThread(NULL,NULL, playMusic, NULL, NULL, NULL);
    break;
  default:
    break;
  }
}
//碰地板和上边界处理
int hitFloor()
{
  if (myBird.y <= 0 || myBird.y >= (512 - 48))
  {
    return 1;
  }
  return 0;
}
//结束动画
void gameOverAction()
{
  int  x = 60;
  int y = 608;
  while (y >= 240)
  {
    putimage(0, 0, &background);
    putimage(x, y, &endImg[0], SRCAND);
    putimage(x, y, &endImg[1], SRCPAINT);
    y -= 50;
    Sleep(50);
  }
  MessageBox(hwnd,"GameOver You Die!","提示",MB_OK);
}
/********************************************
          入口函数
*********************************************/
int main(void)
{ 
  srand((unsigned int)time(NULL));
  //加载资源
  loadResource();
  //创建图形窗口
  initgraph(288, 608);
  //柱子
  for (int i = 0; i < 3; i++)
  {
    initPillar(zhuzi, i);
    zhuzi[i].x = 288 + i * 150;
  }
  while (1)
  {
    putimage(0, 0, &background);
    //加载图片
    drawBigbird(myBird.x, myBird.y);
    for (int i = 0; i < 3; i++)
    {
      zhuzi[i].x -= 10;
      if(zhuzi[i].x < (-52 - 150))
      {
        initPillar(zhuzi, i);
      }
    }
    for (int i = 0; i < 3; i++)
    {
      drawPillar(zhuzi[i]);
    }
    if (hitFloor())
    {
      gameOverAction();
      break;
    }
    //鸟的自由落体
    myBird.y += 10;
    //只有按键处理，没有按键不处理
    if (_kbhit())
    {
      keyDown();
    }
    //延时处理
    Sleep(50);
  }
  _getch();//等待用户按键-防止闪屏
  //关闭窗口
  closegraph();
  return 0;
}