C语言实现流星雨效果流程

#include<stdio.h>
#include<easyx.h>	//第三方图形库，需要安装
#include<time.h>
#include<coNIO.h>
 
#include<mmsystem.h>
#pragma comment(lib,"winmm.lib")

struct Star		//小星星
{
	int x;
	int y;
	int r;
	int speed;			//速度
	COLORREF color;		//颜色
};
struct Meteor
{
	int x;
	int y;
	int speed;
};

//初始化星星
void initStar(int i)
{
	star[i].x = rand() % getwidth();
	star[i].y = rand() % getheight();
	star[i].r = rand() % 3 + 1;
	star[i].speed = rand() % 5;	//0 1 2 3 4
	star[i].color = RGB(rand() % 256, rand() % 256, rand() % 256);
}
//初始化流星
void initMeteor(int i)
{
	//[0,2400)
	//[-1200,1200)
	meteor[i].x = rand() % (2 * getwidth()) - getwidth();	//[-1200,1200)
	meteor[i].y = 20 - 200;
	meteor[i].speed = rand()%15+1;
}

绘制星星
void drawStar()
{
	for (size_t i = 0; i < STAR_NUM; i++)
	{
		//putpixel(star[i].x, star[i].y, star[i].color);
		setfillcolor(star[i].color);
		solidcircle(star[i].x, star[i].y, star[i].r);
	}
}
//绘制流星
void drawMeteor()
{
	for (size_t i = 0; i < METEOR_NUM; i++)
	{
		putimage(meteor[i].x, meteor[i].y, img + rand() % 2,SRCPaiNT);
	}
}

//星星的移动
void moveStar()
{
	for (size_t i = 0; i < STAR_NUM; i++)
	{
		star[i].x+=star[i].speed;
		if (star[i].x > getwidth())
		{
			star[i].x = 0;
		}
	}
}
 
//流星的移动
void moveMeteor()
{
	for (size_t i = 0; i < METEOR_NUM; i++)
	{
		meteor[i].x += meteor[i].speed;
		meteor[i].y += meteor[i].speed;
		if (meteor[i].x >= getwidth() || meteor[i].y >= getheight())
		{
			initMeteor(i);
		}
	}
}

void welcome()
{
	//播放音乐 mci media device interface 
	mciSendString(_T("open ./images/浪漫空气.mp3 alias bgm"), NULL, 0, NULL);
	mciSendString(_T("play bgm"), NULL, 0, NULL);
 
	//设置随机数种子
	srand((unsigned)time(NULL));
	
 
	//设置背景模式
	setbkmode(TRANSPARENT);
 
	//设置文字样式
	settextstyle(40, 0, _T("华文行楷"));
 
	//如果没有按键按下，就一直循环
	while (!_kbhit())
	{
		//清屏
		cleardevice();
		putimage(0, 0, &bk);
 
		//设置文字颜色
		settextcolor(RGB(rand()%256, rand() % 256, rand() % 256));
 
		//输出文字
		int tx = (getwidth() - textwidth(_T("XXX我喜欢你"))) / 2;
		outtextxy(tx, 20, _T("XXX我喜欢你"));
 
		outtextxy(200, 100, _T("血包我不要，我只要你"));
		outtextxy(200, 150, _T("老师我在床上更爱你"));
		outtextxy(200, 200, _T("宝 你就想cf里的源武器 便宜但没人要"));
		outtextxy(200, 250, _T("春风十里 ，我只爱你"));
		outtextxy(200, 300, _T("我的程序只有你一个主函数"));
		outtextxy(200, 350, _T("孤单不是与生俱来，而是由你爱上一个人的那一刻开始。"));
		outtextxy(200, 400, _T("如果奇迹有颜色，那一定是彩虹的颜色"));
		outtextxy(200, 450, _T("山有木兮木有枝，心悦君兮君不知"));
		outtextxy(200, 500, _T("我从不畅享未来，遇到了你以后我每天都在想"));
		outtextxy(200, 550, _T("------------ 爱你XXX"));
		
		for (size_t i = 0; i < 10; i++)
		{
			settextcolor(RGB(rand() % 256, rand() % 256, rand() % 256));
			outtextxy(rand()%getwidth(), rand()%getheight(), _T("♥"));
		}
		
		
		Sleep(1000);
	}
}

int main()
{
	//1,创建图形窗口
	initgraph(1200, 800);
	//设置背景颜色
	//setbkcolor(RGB(99, 99, 99));
	//cleardevice();
 
	
	loadimage(&bk, _T("./images/bk.png"),getwidth(),getheight());
 
 
	for (size_t i = 0; i < STAR_NUM; i++)
	{
		initStar(i);
	}
	for (size_t i = 0; i < METEOR_NUM; i++)
	{
		initMeteor(i);
	}
	loadImg();
	welcome();
 
	//双缓冲绘图
	BeginBatchDraw();
	while (true)
	{
		cleardevice();
		putimage(0, 0, &bk);
 
		drawStar();
		moveStar();
 
		drawMeteor();
		moveMeteor();
 
		FlushBatchDraw();
	}
	EndBatchDraw();
getchar();
	return 0;
}