C++实现代码雨

article/2025/7/17 7:54:36

各位博友们，大家好，今天给大家打一个代码雨
接下来是代码

#include <stdio.h>
#include <time.h>
#include <Windows.h>
#include <graphics.h>#define WIDTH 960
#define HEIGHT 640
#define STR_SIZE 20
#define STR_NUM 128
#define STR_WIDTH 15typedef struct Rain
{int x;int y;int speed;TCHAR str[STR_SIZE];
}Rain; 
Rain rain[STR_NUM];// 随机生成一个字符
char CreateCh()
{char ch = 0;int flag = rand() % 3; // 0~2if (flag == 0)ch = rand() % 26 + 'a'; // 产生小写字母a~zelse if (flag == 1)ch = rand() % 26 + 'A'; // 产生大写字母A~Zelsech = rand() % 10 + '0'; // 产生数字0~9return ch;
}
// 初始化结构体成员
void InitRain()
{// 初始化字符的位置和速度for (int i = 0; i < STR_NUM; ++i){rain[i].x = i*STR_WIDTH;rain[i].y = rand() % HEIGHT;rain[i].speed = rand() % 5 + 5;}// 获取随机字符填充进数组for (int i = 0; i < STR_NUM; i++){for (int j = 0; j < STR_SIZE; j++){rain[i].str[j] = CreateCh();}}
}
// 输出到窗口中
void DrawRain()
{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]);settextcolor(RGB(0, 255-j*13, 0));}}
}
// 移动字符
void MoveRain()
{for (int i = 0; i < STR_NUM; i++){rain[i].y += rain[i].speed;if (rain[i].y- STR_WIDTH*STR_SIZE > HEIGHT){rain[i].y = 0;}}
}
// 随机改变字符
void ChangeCh()
{for (int i = 0; i < STR_NUM; i++){rain[rand() % STR_NUM].str[rand() % STR_SIZE] = CreateCh();}
}
int main()
{srand((unsigned int)time(NULL)); // 初始化随机数种子initgraph(WIDTH, HEIGHT);InitRain();DWORD t1, t2;t1 = GetTickCount();t2 = t1;while (1){BeginBatchDraw(); // 双缓冲机制DrawRain();ChangeCh();if (t2 - t1 > 20){MoveRain();t1 = t2;}t2 = GetTickCount();EndBatchDraw();}getchar();closegraph();return 0;
}