C/C++——星空&下雪特效(Easyx)

一时失言乱红尘 2022-10-17 05:29 342阅读 0赞

## 实现效果如图： ##

1、星空  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70]  
2、下雪  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70 1]

## 代码如下： ##

\-1-星空

#include<graphics.h>
    #include<time.h>
    #include<conio.h>
    
    #define MAXSTAR 800 //星星最大值
    #define WIDTH 640 //图表宽度
    #define HEIGHT 480 //图表高度
    //星星封装结构体
    struct STAR
    { 
    	int x, y;
    	double step;//用于星星移动速度
    	int color;
    };
    STAR star[MAXSTAR];
    //星星初始化
    void InitStart(int i)
    { 
    	star[i].x = 0;
    	star[i].y = rand() % HEIGHT;
    	star[i].step = (rand()% 5000) / 1000.0 + 1;
    	star[i].color = (int)(star[i].step * 255 / 6.0 + 0.5);//速度越快，星星越亮
    	star[i].color = RGB(star[i].color, star[i].color, star[i].color);
    }
    //星星移动
    void MoveStar(int i)
    { 
    	putpixel(star[i].x, star[i].y, 0);
    	
    	star[i].x += star[i].step;
    	if (star[i].x >= WIDTH)
    		InitStart(i);
    	putpixel(star[i].x, star[i].y, star[i].color);
    }
    int main(void)
    { 
    	srand((unsigned)time(NULL));//播种随机种子
    	initgraph(WIDTH, HEIGHT);//初始化图形
    
    	for (int i = 0; i < MAXSTAR; i++)//遍历初始全部星星
    	{ 
    		InitStart(i);
    		star[i].x = rand() % WIDTH;
    	}
    	//星星移动
    	while (!_kbhit())//按任意键退出
    	{ 
    		for (int i = 0; i < MAXSTAR; i++)
    			MoveStar(i);
    		Sleep(20);
    	}
    	system("pause");
    	closegraph();
    	return 0;
    }

\-2-下雪

#include<graphics.h>
    #include<conio.h>
    #include<time.h>
    
    #define MAXSNOW 500
    #define WIDTH 840
    #define HEIGHT 620
    
    struct SNOW
    { 
    	int x, y;
    	char color;
    };
    SNOW snow[MAXSNOW];
    
    void initSNOW(int i)
    { 
    	snow[i].x = rand() % WIDTH;
    	snow[i].y = 0;
    	snow[i].color = RGB(225, 225, 225);
    }
    void moveSNOW(int i)
    { 
    	putpixel(snow[i].x, snow[i].y, 0);
    
    	snow[i].y += rand() % 10;
    	if (snow[i].y > HEIGHT)
    		initSNOW(i);
    
    	putpixel(snow[i].x, snow[i].y, WHITE);
    }
    int main(void)
    { 
    	srand((unsigned)time(NULL));
    	initgraph(WIDTH, HEIGHT);
    
    	for (int i = 0; i < MAXSNOW; i++)
    	{ 
    		initSNOW(i);
    		snow[i].y = rand() % HEIGHT;
    	}
    	while (!_kbhit())
    	{ 
    		for (int i = 0; i < MAXSNOW; i++)
    		{ 
    			moveSNOW(i);
    		}
    		Sleep(20);
    	}
    	system("pause");
    	closegraph();
    	return 0;
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70]: /images/20221014/f47025ff38de41b58ffc080c063ed428.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70 1]: /images/20221014/df39b8046b6b4489a63d5ef464576bbc.png