来自程序猿的流星雨

昨天在一个公众号上看到用C++实现的一场流星雨场景图，惊艳到了一直没怎么接触过图形库的我，于是想着自己实现一个类似的场景，不知道是codeblocks本身的原因还是我安装图形库的过程出了点问题，反正就是好多错误，于是弃用CB改用VS2013进行编程了，下面先归纳一下用到的一些东西：

图形库

头文件：grphics.h

创建图形窗口：initgraph(int width,int height);

画点：putpixel(int x,int y,color);

音乐

头文件：mmsystem.h

加载静态库：#pragma comment(lib,"winmm.lib")

打开音乐：mciSendString("open 音乐路径 alias music", 0, 0, 0);
播放音乐：mciSendString("play music repeat", 0, 0, 0);

贴图

设置图片变量：IMAGE

加载图片：loadimage(&img, 图片路径, 长, 宽);

输出图片：putimage(0, 0, &img, SRCPAINT);

随机数

随机数种子：srand((unsigned int)time(NULL));

使用：rand()函数

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

写的真的很一般的代码：

#include<time.h>
//#include<mmsystem.h>此头文件有些问题.....
#include <graphics.h>//图形库头文件
#pragma comment(lib,"winmm.lib")
#define MAXStar 1000 //星星
#define MAXStar0 300 //流星
IMAGE img1, img2, img3, img4;
void initData();
void initStar(int i);
void initStar0(int i);
void moveStar(int i);
void moveStar0();
void drawStar0();
struct STAR//星星
{
	int x, y;
	int v;
	int color;
}star[MAXStar];

struct STAR0//流星
{
	int x, y;
	int v;
	int style;//图片样式
}star0[MAXStar0];

int main()
{
	initData();
	mciSendString("open 666.mp3 alias music", 0, 0, 0);//背景音乐
	mciSendString("play music repeat", 0, 0, 0);
	while (1)
	{
		BeginBatchDraw();//开始绘图界面
		cleardevice();//刷新窗口
		for (int i = 0; i < MAXStar; i++)
		{
			moveStar(i);
		}
		moveStar0();
		drawStar0();
		Sleep(100);
		EndBatchDraw();//结束绘图界面，绘制上面所有操作
	}
	closegraph();
	return 0;
}
void  initData()
{
	srand((unsigned int)time(NULL));
    initgraph(980,720);
	//初始化数据
	loadimage(&img1, "P1.jpg", 50, 50);
	loadimage(&img2, "P2.jpg", 50, 50);
	loadimage(&img3, "P3.jpg", 50, 50);
	loadimage(&img4, "P4.jpg", 50, 50);
	//初始化星星
	int i;
	for (i = 0; i<MAXStar; i++)
	{
		initStar(i);
		star[i].x = rand() % 640;
	}
	//初始化流星
	for (i = 0; i<MAXStar0; i++)
	{
		initStar0(i);
		star0[i].x = rand() % 640;
	}

}
void initStar(int i)
{
	star[i].x = 0;
	star[i].y = rand() % 480;
	star[i].v = rand() % 5;
	star[i].color = RGB(star[i].v * 51, star[i].v * 51, star[i].v * 51);//255/5=51;
}
void initStar0(int i)
{
	star0[i].x = rand() % 1280 - 2080;
	star0[i].y = -100;
	do
	{
		star0[i].v = rand() % 30 + 1;
	} while (star0[i].v<5);//避免出现速度过慢的
	star0[i].style = rand() % 4 + 1;//1-4
}
void moveStar(int i)
{
	putpixel(star[i].x, star[i].y, 0);
	star[i].x += star[i].v;
	if (star[i].x>640)
		initStar(i);
	putpixel(star[i].x, star[i].y, star[i].color);
}
void moveStar0( )
{
	for (int i = 0; i < MAXStar0; i++)
	{
		star0[i].x += star0[i].v;
		star0[i].y += star0[i].v;
	}
}
void drawStar0()
{
	for (int i = 0; i < MAXStar0; i++)
	{
		switch (star0[i].style)
		{
		case 1:
			putimage(star0[i].x, star0[i].y, &img1, SRCPAINT);
			break;
		case 2:
			putimage(star0[i].x, star0[i].y, &img2, SRCPAINT);
			break;
		case 3:
			putimage(star0[i].x, star0[i].y, &img3, SRCPAINT);
			break;
		case 4:
			putimage(star0[i].x, star0[i].y, &img4, SRCPAINT);
			break;
		}
	}
}

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#include<time.h>

//#include<mmsystem.h>此头文件有些问题.....

#include <graphics.h>//图形库头文件

#pragma comment(lib,"winmm.lib")

#define MAXStar 1000 //星星

#define MAXStar0 300 //流星

IMAGE img1, img2, img3, img4;

void initData();

void initStar(int i);

void initStar0(int i);

void moveStar(int i);

void moveStar0();

void drawStar0();

struct STAR//星星

{

int x, y;

int v;

int color;

}star[MAXStar];

struct STAR0//流星

{

int x, y;

int v;

int style;//图片样式

}star0[MAXStar0];

int main()

{

initData();

mciSendString("open 666.mp3 alias music", 0, 0, 0);//背景音乐

mciSendString("play music repeat", 0, 0, 0);

while (1)

{

BeginBatchDraw();//开始绘图界面

cleardevice();//刷新窗口

for (int i = 0; i < MAXStar; i++)

{

moveStar(i);

}

moveStar0();

drawStar0();

Sleep(100);

EndBatchDraw();//结束绘图界面，绘制上面所有操作

}

closegraph();

return 0;

}

void initData()

{

srand((unsigned int)time(NULL));

initgraph(980,720);

//初始化数据

loadimage(&img1, "P1.jpg", 50, 50);

loadimage(&img2, "P2.jpg", 50, 50);

loadimage(&img3, "P3.jpg", 50, 50);

loadimage(&img4, "P4.jpg", 50, 50);

//初始化星星

int i;

for (i = 0; i<MAXStar; i++)

{

initStar(i);

star[i].x = rand() % 640;

}

//初始化流星

for (i = 0; i<MAXStar0; i++)

{

initStar0(i);

star0[i].x = rand() % 640;

}

void initStar(int i)

{

star[i].x = 0;

star[i].y = rand() % 480;

star[i].v = rand() % 5;

star[i].color = RGB(star[i].v * 51, star[i].v * 51, star[i].v * 51);//255/5=51;

}

void initStar0(int i)

{

star0[i].x = rand() % 1280 - 2080;

star0[i].y = -100;

{

star0[i].v = rand() % 30 + 1;

} while (star0[i].v<5);//避免出现速度过慢的

star0[i].style = rand() % 4 + 1;//1-4

}

void moveStar(int i)

{

putpixel(star[i].x, star[i].y, 0);

star[i].x += star[i].v;

if (star[i].x>640)

initStar(i);

putpixel(star[i].x, star[i].y, star[i].color);

}

void moveStar0( )

{

for (int i = 0; i < MAXStar0; i++)

{

star0[i].x += star0[i].v;

star0[i].y += star0[i].v;

}

void drawStar0()

{

for (int i = 0; i < MAXStar0; i++)

{

switch (star0[i].style)

{

case 1:

putimage(star0[i].x, star0[i].y, &img1, SRCPAINT);

break;

case 2:

putimage(star0[i].x, star0[i].y, &img2, SRCPAINT);

break;

case 3:

putimage(star0[i].x, star0[i].y, &img3, SRCPAINT);

break;

case 4:

putimage(star0[i].x, star0[i].y, &img4, SRCPAINT);

break;

}

附上一张效果图

666 - 来自程序猿的流星雨

随手将最后的可执行文件拉到了百度云里链接：https://pan.baidu.com/s/1P4NHMVMn7pRTP272ujOhug 密码：m1qu

好多事情，做起来真的没有看起来那么简单(っ ̯ -｡) ......

http://xzh.i3geek.com

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