C/C++——黑客数字雨特效

心已赠人 2022-10-15 10:48 130阅读 0赞

## **实现效果如图:** ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70]

## **代码如下：** ##

#include<stdio.h>
    #include<graphics.h>
    #include<time.h>
    #define WIDTH 1680 //宽度
    #define HEIGTH 820 //高度
    #define STR_SIZE 20 //字符串长度
    #define STR_NUM 128 //字符串最大值
    #define STR_WIDTH 15//字符串所占宽度
    //数字雨结构体
    struct Rain
    { 
    	int x, y;
    	int speed;
    	char str[STR_SIZE];
    }rain[STR_NUM];
    //创建随机字符串
    char CreateCh()
    { 
    	char temp = 0;
    	int flag = rand() & 3;
    	
    	if (flag == 0)
    		temp = rand() % 26+'a';
    	else if(flag == 1)
    		temp = rand() % 26+'A';
    	else
    		temp = rand() % 10+'0';
    
    	return temp;
    }
    //字符串初始化
    void GameInit()
    { 
    	//字符串位置初始化
    	for (int i = 0; i < STR_NUM; i++)
    	{ 
    		rain[i].x = i * STR_WIDTH;
    		rain[i].y = rand() % HEIGTH;
    		rain[i].speed = rand() % 5 + 5;
    	}
    	//赋予字符串
    	for (int i = 0; i < STR_NUM; i++)
    	{ 
    		for (int j = 0; j < STR_SIZE; j++)
    		{ 
    			rain[i].str[j] = CreateCh();
    		}
    	}
    
    }
    //字符串条形绘制
    void GameDraw()
    { 
    	cleardevice();
    	for (int i = 0; i < STR_NUM; i++)
    	{ 
    		for (int j = 0; j < STR_SIZE; j++)
    		{ 
    			outtextxy(rain[i].x,rain[i].y-STR_WIDTH*j,rain[i].str[j]);//rain[i].y-STR_WIDTH*j-->成条形字符串
    			settextcolor(RGB(0, 255 - 13 * j,0));
    		}
    	}
    }
    //字符串掉落
    void GamePlay()
    { 
    	for (int i = 0; i < STR_NUM; i++)
    	{ 
    		rain[i].y += rain[i].speed;
    		//rain[i].y-STR_SIZE*STR_WIDTH-->使每串字符串到底结束
    		if (rain[i].y-STR_SIZE*STR_WIDTH > HEIGTH)
    		{ 
    			rain[i].y = 0;
    		}
    	}
    }
    //字符串掉落过程字符随机改变
    void ChangeCh()
    { 
    	for (int i = 0; i < STR_NUM; i++)
    	{ 
    		rain[rand() % STR_NUM].str[rand() % STR_SIZE] = CreateCh();
    	}
    }
    int main()
    { 
    	initgraph(WIDTH, HEIGTH);
    	GameInit();//字符串初始化
    	DWORD t1, t2;//定义两个获取系统时间变量
    	t1 = t2 = GetTickCount();//获取系统时间
    	while (1)
    	{ 
    		BeginBatchDraw();//开始批量绘制
    		GameDraw();//绘制字符串于界面
    		ChangeCh();//随机改变字符串
    		if (t2 - t1 > 20)
    		{ 
    			GamePlay();//掉落时间为20ms
    			t1 = t2;
    		}
    		t2 = GetTickCount();
    		EndBatchDraw();
    	}
    	closegraph();
    	return 0;
    }

\*\*

> 过程步骤：

\*\*![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70]: /images/20221014/68ad81766e2e43da8befad17acd7d0f3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl81MzM5MTk1Nw_size_16_color_FFFFFF_t_70 1]: /images/20221014/6b6e9917a52a466cb637bdf255e79c50.png