致敬黑客帝国（最初使我萌发对IT行业兴趣的引路人）——用EasyX和C实现字符雨

静态字符阵的创建

#include<graphics.h>
#include<time.h>
#include<conio.h>

#define high 800
#define width 1000
#define size 25

int main()
{
	int highNum = high / size;				//宽
	int widthNum = width / size;			//长

	int CharRain[width / size][high / size];
	int CNum[width / size];					//每列的有效字符个数
	int i, j, x, y;
	srand((unsigned)time(NULL));		//设随机函数seed

	for(i = 0; i < widthNum; i++)
	{
		CNum[i] = (rand() % (highNum * 9 / 10)) + highNum / 10;
		for(j = 0; j < CNum[i]; j++)
			CharRain[j][i] = (rand() % 26) + 65;	//产生A~Z的random ASCII码
	}

	initgraph(width, high);
	BeginBatchDraw();
	setfont(25, 10, "Courier");
	setcolor(GREEN);

	for(i = 0; i < widthNum; i++)
	{
		x = i * size;
		for(j = 0; j < CNum[i]; j++)
		{
			y = j * size;
			outtextxy(x, y, CharRain[j][i]);
		}
	}

	FlushBatchDraw();
	EndBatchDraw();
	getch();
	closegraph();
	return 0;
}

注意：由于这里定义了随机种子，所以每次运行得到的字符阵是不一样的

用代码求一场字符雨

#include<graphics.h>
#include<time.h>
#include<conio.h>

#define high 800						//高
#define width 1000						//宽
#define size 25

int main()
{
	int highNum = high / size;				 
	int widthNum = width / size;			 
	int CharRain[width / size][high / size];	//字符array
	int CNum[width / size];					//每列字符个数
	int i, j, x, y;
	srand((unsigned)time(NULL));		//设随机函数seed

	for(i = 0; i < widthNum; i++)
	{
		CNum[i] = (rand() % (highNum * 9 / 10)) + highNum / 10;
		for(j = 0; j < CNum[i]; j++)
			CharRain[j][i] = (rand() % 26) + 65;	//产生A~Z的random ASCII码
	}

	initgraph(width, high);
	BeginBatchDraw();
	setfont(25, 10, "Courier");
	setcolor(GREEN);

	while(1)
	{
		for(i = 0; i < widthNum; i++)
		{
			if(CNum[i] < highNum - 1)
			{
				for(j = CNum[i] - 1; j >= 0; j--)
				{
					CharRain[j + 1][i] = CharRain[j][i];
				}
				CharRain[0][i] = (rand() % 26) + 65;
				CNum[i]++;
			}
		}


		for(i = 0; i < widthNum; i++)
		{
			x = i * size;
			for(j = 0; j < CNum[i]; j++)
			{
				y = j * size;
				outtextxy(x, y, CharRain[j][i]);
			}
		}

		FlushBatchDraw();
		Sleep(1000);
		clearrectangle(0, 0, width - 1, high - 1);
	}
	EndBatchDraw();
	getch();
	closegraph();
	return 0;
}

终极版字符雨动画

注：因为黑客帝国里字符雨是绿色的，所以关于颜色的变化参数只要选择RGB里中间那个，RGB里是红绿蓝，所以选绿色

详细代码如下：

#include<graphics.h>
#include<time.h>
#include<conio.h>

#define high 800						//高
#define width 1000						//宽
#define size 25

int main()
{
	int highNum = high / size;				 
	int widthNum = width / size;			 
	int CharRain[width / size][high / size];	//字符array
	int CNum[width / size];					//每列字符个数
	int i, j, x, y;
	int color[width / size];			//存储每列的颜色
	srand((unsigned)time(NULL));		//设随机函数seed

	for(i = 0; i < widthNum; i++)
	{
		CNum[i] = (rand() % (highNum * 9 / 10)) + highNum / 10;
		color[i] = 255;					//先都定为纯绿255
		for(j = 0; j < CNum[i]; j++)
			CharRain[j][i] = (rand() % 26) + 65;	//产生A~Z的random ASCII码
	}

	initgraph(width, high);
	BeginBatchDraw();
	setfont(25, 10, "Courier");

	while(1)
	{
		for(i = 0; i < widthNum; i++)
		{
			if(CNum[i] < highNum - 1)			//使得每列字符保持饱和状态
			{
				for(j = CNum[i] - 1; j >= 0; j--)
				{
					CharRain[j + 1][i] = CharRain[j][i];		//字符向下移动
				}
				CharRain[0][i] = (rand() % 26) + 65;
				CNum[i]++;
			}
			else				//已处于饱和状态
			{
				if(color[i] > 40)
					color[i] -= 20;		//变暗
				else			//太暗了就初始化该列字符
				{
					CNum[i] = (rand() % (highNum * 9 / 10)) + highNum / 10;
					color[i] = rand() % 75 + 180;
					for(j = 0; j < CNum[i]; j++)
						CharRain[j][i] = (rand() % 26) + 65;
				}
			}
		}


		for(i = 0; i < widthNum; i++)
		{
			x = i * size;
			for(j = 0; j < CNum[i]; j++)
			{
				y = j * size;
				setcolor(RGB(0, color[i], 0));
				outtextxy(x, y, CharRain[j][i]);
			}
		}

		FlushBatchDraw();
		Sleep(100);
		clearrectangle(0, 0, width - 1, high - 1);
	}
	EndBatchDraw();
	getch();
	closegraph();
	return 0;
}

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