C++编写的小程序，将字符图像作为宇宙天体在控制台中动态绘制

以下是一个使用C++编写的简单示例代码，将字符图像作为宇宙天体在控制台中动态绘制：

#include <iostream>
#include <vector>
#include <cmath>
#include <cstdlib>
#include <ctime>

const int SCREEN_WIDTH = 80;
const int SCREEN_HEIGHT = 24;
const int NUM_STARS = 100;

struct Body {
    double x, y;   // 位置
    double vx, vy; // 速度
    char character; // 字符
};

void updateVelocity(Body& body) {
    // 在范围[-1, 1)内生成随机速度分量
    body.vx += (2.0 * rand() / RAND_MAX) - 1.0;
    body.vy += (2.0 * rand() / RAND_MAX) - 1.0;

    // 限制速度范围在[-1, 1)
    body.vx = std::min(std::max(body.vx, -1.0), 1.0);
    body.vy = std::min(std::max(body.vy, -1.0), 1.0);
}

void updatePosition(Body& body) {
    body.x += body.vx;
    body.y += body.vy;

    // 边界处理
    if (body.x < 0) body.x = SCREEN_WIDTH - 1;
    else if (body.x >= SCREEN_WIDTH) body.x = 0;

    if (body.y < 0) body.y = SCREEN_HEIGHT - 1;
    else if (body.y >= SCREEN_HEIGHT) body.y = 0;
}

void initializeStars(std::vector<Body>& stars) {
    // 随机生成星星的位置和字符
    for (int i = 0; i < NUM_STARS; ++i) {
        Body star;
        star.x = rand() % SCREEN_WIDTH;
        star.y = rand() % SCREEN_HEIGHT;
        star.character = '*';
        updateVelocity(star);
        stars.push_back(star);
    }
}

void clearScreen() {
    // 清除控制台屏幕
    std::cout << "\033[2J";
}

void moveCursorToHome() {
    // 移动控制台光标到起始位置
    std::cout << "\033[H";
}

void drawFrame(const std::vector<Body>& bodies) {
    // 清除屏幕并绘制字符图像
    clearScreen();
    moveCursorToHome();

    std::vector<std::vector<char>> frame(SCREEN_HEIGHT, std::vector<char>(SCREEN_WIDTH, ' '));

    for (const auto& body : bodies) {
        int x = std::round(body.x);
        int y = std::round(body.y);

        if (x >= 0 && x < SCREEN_WIDTH && y >= 0 && y < SCREEN_HEIGHT) {
            frame[y][x] = body.character;
        }
    }

    for (int y = 0; y < SCREEN_HEIGHT; ++y) {
        for (int x = 0; x < SCREEN_WIDTH; ++x) {
            std::cout << frame[y][x];
        }

        std::cout << '\n';
    }

    std::cout.flush();
}

int main() {
    std::srand(std::time(nullptr));

    std::vector<Body> stars;
    initializeStars(stars);

    while (true) {
        for (auto& star : stars) {
            updatePosition(star);
            updateVelocity(star);
        }

        drawFrame(stars);
    }

    return 0;
}