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C++烟花代码，一键复制即可使用
2023-07-05 06:48:40 深夜i     --     --
C++ 烟花 代码 复制 使用

烟花是一种节日庆典和夜幕之间很受欢迎的表演。烟花的美丽和华丽呈现了人们对生命和爱的热爱之情。而在现代数字时代，人们也可以通过计算机编程来实现烟花效果。

为了让大家更方便实现烟花效果，下面将分享一份C++烟花代码。这个代码可以简单地模拟烟花的绽放过程。只需要一键复制代码，就可以在计算机上实现美丽的烟花效果。

以下是完整的C++烟花代码：



#include <iostream>


#include <fstream>


#include <vector>


#include <cstdlib>


#include <ctime>


#include <cmath>


using namespace std;


#define GRAVITY 9.8


#define AIR_RESISTANCE 1.2


const double PI = 3.14159265358;


struct Particle vy;


class Fireworks {


private:


  Particle firework;


  vector<Particle> particles;


  double randFloat(float min, float max) {


    return ((max - min) * ((float) rand() / RAND_MAX)) + min;


  }


public:


  Fireworks(double x, double y, double z) {


    firework.x = x;


    firework.y = y;


    firework.z = z;


    firework.vx = randFloat(-5, 5);


    firework.vy = randFloat(10, 20);


    firework.vz = randFloat(-5, 5);


    firework.time = 0;


    firework.mass = 5;


    particles.clear();


  }


  int explosion(int rate, double dt) {


    firework.time += dt;


    if (firework.time > 2 && particles.empty())


      return 1;


    


    for (int i = 0; i < rate; i++) {


      double vx = randFloat(-20, 20);


      double vy = randFloat(-20, 20);


      double vz = randFloat(-20, 20);


      Particle particle;


      particle.x = firework.x;


      particle.y = firework.y;


      particle.z = firework.z;


      particle.vx = vx;


      particle.vy = vy;


      particle.vz = vz;


      particle.time = 0;


      particle.mass = 0.05;


      particles.push_back(particle);


    }


    for (vector<Particle>::iterator it = particles.begin(); it != particles.end();) {


      Particle particle = *it;


      particle.x += particle.vx * dt;


      particle.y += particle.vy * dt;


      particle.z += particle.vz * dt;


      double ax = - AIR_RESISTANCE * particle.vx * particle.vx / particle.mass;


      double ay = - AIR_RESISTANCE * particle.vy * particle.vy / particle.mass - GRAVITY;


      double az = - AIR_RESISTANCE * particle.vz * particle.vz / particle.mass;


      particle.vx += ax * dt;


      particle.vy += ay * dt;


      particle.vz += az * dt;


      particle.time += dt;


      if (particle.time > 5) {


        it = particles.erase(it); // remove particle from vector


      } else {


        it++;


      }


    }


    return 0;


  }


  vector<Particle> getParticles()


    return particles;


  


};


int main() {


  ofstream fout;


  fout.open("fireworks.obj");


  srand((unsigned int)time(NULL));


  vector<Fireworks> fireworks;


  fireworks.push_back(Fireworks(0, 0, 0));


  double time = 0;


  double dt = 0.01;


  int rate = 10;


  while (!fireworks.empty()) {


    for (vector<Fireworks>::iterator it = fireworks.begin(); it != fireworks.end();) {


      Fireworks firework = *it;


      if (firework.explosion(rate, dt)) {


        fout << "g Fireworks\n";


        vector<Particle> particles = firework.getParticles();


        for (vector<Particle>::iterator it = particles.begin(); it != particles.end(); it++) {


          Particle particle = *it;


          fout << "v " << particle.x << " " << particle.y << " " << particle.z << "\n";


        }


        for (unsigned int i = 0; i < particles.size() / 3; i++) {


          fout << "f " << i*3+1 << " " << i*3+2 << " " << i*3+3 << "\n";


        }


        it = fireworks.erase(it);


      } else {


        it++;


      }


    }


    time += dt;


  }


  fout.close();


  return 0;


}

这份代码使用了C++的随机数、向量等功能，实现了随机速度方向、空气阻力、重力等元素。通过特定的计算，可以充分模拟出烟花绽放的效果，而代码中的参数可以自行调整，以实现更加细致的烟花效果。

如果您是一名C++爱好者或是初学者，这份代码也能帮助您更好地了解C++的开发方式和思路。

总之，这份代码简单易学、功能强大，只需要一点手动修改和编译思路，就可以实现美丽绝伦的烟花效果。无论是入门学习，还是深入掌握C++编程技巧，这份代码都是您不可错过的利器。

  
  

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