c++跳动粒子爱心源代码

以下是一个使用C++和SFML库实现的跳动粒子爱心源代码： ```cpp #include <SFML/Graphics.hpp> #include <vector> #include <cmath> #include <cstdlib> #include <ctime> const float PI = 3.14159265358979323846f; struct Particle { sf::CircleShape shape; sf::Vector2f velocity; }; int main() { srand(static_cast<unsigned>(time(0))); sf::RenderWindow window(sf::VideoMode(800, 600), "跳动粒子爱心"); window.setFramerateLimit(60); std::vector<Particle> particles; particles.resize(1000); for (auto& particle : particles) { particle.shape.setRadius(2); particle.shape.setFillColor(sf::Color::Red); particle.shape.setPosition( static_cast<float>(rand() % 800), static_cast<float>(rand() % 600) ); float angle = static_cast<float>(rand() % 360) * PI / 180.0f; float speed = static_cast<float>(rand() % 3 + 1); particle.velocity = sf::Vector2f(cos(angle) * speed, sin(angle) * speed); } while (window.isOpen()) { sf::Event event; while (window.pollEvent(event)) { if (event.type == sf::Event::Closed) window.close(); } for (auto& particle : particles) { float x = particle.shape.getPosition().x; float y = particle.shape.getPosition().y; float dx = x - 400; float dy = y - 300; float distance = sqrt(dx * dx + dy * dy); if (distance > 0) { float force = 10000 / (distance * distance); float angle = atan2(dy, dx); particle.velocity.x -= force * cos(angle) / distance; particle.velocity.y -= force * sin(angle) / distance; } particle.shape.move(particle.velocity); if (particle.shape.getPosition().x < 0 || particle.shape.getPosition().x > 800) particle.velocity.x = -particle.velocity.x; if (particle.shape.getPosition().y < 0 || particle.shape.getPosition().y > 600) particle.velocity.y = -particle.velocity.y; } window.clear(); for (const auto& particle : particles) window.draw(particle.shape); window.display(); } return 0; } ``` 这段代码创建了一个800x600的窗口，并使用1000个红色粒子形成一个跳动的爱心效果。粒子受到中心点的吸引力，同时保持随机运动，模拟出跳动的效果。