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easyx-mingw64-dev/xingkong/xingkong.cc
Steven Hobs d8ba288e1d init
2026-03-04 17:47:10 +08:00

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// 编译环境Visual C++ 6.0~2022EasyX_25.9.10
// https://easyx.cn
//
#include <graphics.h>
#include <time.h>
#include <conio.h>
#define MAXSTAR 200 // 星星总数
struct STAR
{
double x;
int y;
double step;
int color;
};
STAR star[MAXSTAR];
// 初始化星星
void InitStar(int i)
{
star[i].x = 0;
star[i].y = rand() % 480;
star[i].step = (rand() % 5000) / 1000.0 + 1;
star[i].color = (int)(star[i].step * 255 / 6.0 + 0.5); // 速度越快,颜色越亮
star[i].color = RGB(star[i].color, star[i].color, star[i].color);
}
// 移动星星
void MoveStar(int i)
{
// 擦掉原来的星星
putpixel((int)star[i].x, star[i].y, 0);
// 计算新位置
star[i].x += star[i].step;
if (star[i].x > 640) InitStar(i);
// 画新星星
putpixel((int)star[i].x, star[i].y, star[i].color);
}
// 主函数
int main()
{
srand((unsigned)time(NULL)); // 随机种子
initgraph(640, 480); // 创建绘图窗口
// 初始化所有星星
for(int i = 0; i < MAXSTAR; i++)
{
InitStar(i);
star[i].x = rand() % 640;
}
// 绘制星空,按任意键退出
while(!_kbhit())
{
for(int i = 0; i < MAXSTAR; i++)
MoveStar(i);
Sleep(20);
}
closegraph(); // 关闭绘图窗口
return 0;
}