利用 C++面向对象的编程思想，设计并实现多束烟花上升并在一定高度绽放绽放效 果

以下是一个简单的 C++ 代码示例，用于实现多束烟花上升并在一定高度绽放绽放效果：

#include <iostream>
#include <vector>
#include <cstdlib>
#include <ctime>
#include <windows.h>

using namespace std;

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

class Firework {
public:
    Firework(int x, int y) : m_x(x), m_y(y), m_height(0), m_exploded(false) {}
    void rise();
    void explode();
    bool is_exploded() { return m_exploded; }
private:
    int m_x;
    int m_y;
    int m_height;
    bool m_exploded;
};

void Firework::rise() {
    if (m_height >= SCREEN_HEIGHT / 2) {
        explode();
    } else {
        m_height++;
        cout << "\033[" << m_y - m_height << ";" << m_x << "H*";
    }
}

void Firework::explode() {
    m_exploded = true;
    static const vector<int> colors = { 31, 32, 33, 34, 35, 36, 37 };
    static const vector<char> shapes = { '*', '+', '-', '=', '#' };
    static const int num_particles = 50;
    for (int i = 0; i < num_particles; i++) {
        int color = colors[rand() % colors.size()];
        char shape = shapes[rand() % shapes.size()];
        int x_offset = rand() % 6 - 2;
        int y_offset = rand() % 6 - 2;
        int x = m_x + x_offset;
        int y = m_y - m_height + y_offset;
        if (x >= 0 && x < SCREEN_WIDTH && y >= 0 && y < SCREEN_HEIGHT) {
            cout << "\033[" << y << ";" << x << "H\033[" << color << "m" << shape << "\033[0m";
        }
    }
}

int main() {
    srand(time(nullptr));
    vector<Firework> fireworks;
    while (true) {
        if (rand() % 10 == 0) {
            int x = rand() % SCREEN_WIDTH;
            int y = SCREEN_HEIGHT - 1;
            fireworks.emplace_back(x, y);
        }
        for (auto& firework : fireworks) {
            if (!firework.is_exploded()) {
                firework.rise();
            }
        }
        fireworks.erase(remove_if(fireworks.begin(), fireworks.end(),
            [](const Firework& firework) { return firework.is_exploded(); }), fireworks.end());
        Sleep(50);
    }
    return 0;
}

该代码利用了面向对象的编程思想，设计了一个 Firework 类来表示每个烟花。每个烟花具有 x、y 坐标、高度和是否已经绽放的状态。在主循环中，首先根据一定概率生成新的烟花，并将其添加到烟花向量中。然后遍历烟花向量，逐个调用 rise() 方法使其上升，在达到一定高度后调用 explode() 方法绽放烟花。在 explode() 方法中，生成一定数量的颜色、形状随机的粒子，并输出到屏幕上。最后，将已经绽放的烟花从烟花向量中移除。