流星雨

#include <graphics.h>
#include <time.h>
#include <mmsystem.h>
#pragma comment(lib,"winmm.lib")


#define MAXSTAR 100   //流星最大数量
#define MAXSTAR1 1000  //星星最大数量


IMAGE img1, img2;




//星星
struct STAR1
{
int x, y;  //星星坐标
int step;  //星星移动的速度
int color;  //星星的颜色
}star1[MAXSTAR1];


//流星
struct STAR
{
int x, y;
int step;
int style; //图片样式
}star[MAXSTAR];




void initData();
void initStar1(int i);
void initStar(int i);
void moveStar1(int i);
void moveStar();
void drawStar();




int main()
{
initData();
mciSendString("open 凉凉.mp3 alias music", 0, 0, 0);
mciSendString("play music repeat", 0, 0, 0);


while (1)
{
BeginBatchDraw();  //开始绘图界面
cleardevice();
for (int i = 0; i < MAXSTAR1; i++)
{
moveStar1(i);
}
moveStar();
drawStar();
Sleep(50);
EndBatchDraw();   //结束绘图界面,绘制上面所有的操作
}


closegraph();
return 0;


}




void initData()
{
srand((unsigned int)time(NULL));
initgraph(640, 480);
//初始化数据
loadimage(&img1, "2.jpg", 50, 50);
loadimage(&img2, "3.jpg", 50, 50);
//初始化星星
int i = 0;
for (i = 0; i < MAXSTAR1; i++)
{
initStar1(i);
star1[i].x = rand() % 640;
}
//初始化流星
for (i = 0; i < MAXSTAR; i++)
{
initStar(i);
}
}




void initStar1(int i)
{
star1[i].x = 0;
star1[i].y = rand() % 480;
star1[i].step = rand() % 5;
star1[i].color = RGB(star1[i].step * 51, star1[i].step * 51, star1[i].step * 51);
}


void initStar(int i)
{
star[i].x = rand() % 1280 - 640;  //-640-639
star[i].y = -144;
do
{
star[i].step = rand() % 30 + 1;
} while (star[i].step < 5);
star[i].style = rand() % 3 + 1;
}


//绘制移动星星
void moveStar1(int i)
{
putpixel(star1[i].x, star1[i].y, 0);
star1[i].x += star1[i].step;
if (star1[i].x>640)
initStar1(i);
putpixel(star1[i].x, star1[i].y, star1[i].color);
}


void moveStar()
{
for (int i = 0; i < MAXSTAR; i++)
{
star[i].x += star[i].step;
star[i].y += star[i].step*0.8;
}
}




void drawStar()
{
for (int i = 0; i < MAXSTAR; i++)
{
switch (star[i].style)
{
case 1:
putimage(star[i].x, star[i].y, &img1, SRCPAINT);
break;
case 2:
putimage(star[i].x, star[i].y, &img2, SRCPAINT);
break;
}
}
}






*/