java粒子爱心特效代码

以下是一个使用Java实现的粒子爱心特效的代码示例：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ParticleHeartEffect extends JPanel implements ActionListener {
    private Timer timer;
    private Particle[] particles;

    public ParticleHeartEffect() {
        particles = new Particle[1000];
        for (int i = 0; i < particles.length; i++) {
            particles[i] = new Particle();
        }

        timer = new Timer(10, this);
        timer.start();
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2d = (Graphics2D) g;

        g2d.setColor(Color.RED);
        for (Particle particle : particles) {
            g2d.fillOval((int) particle.x, (int) particle.y, 2, 2);
        }
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        for (Particle particle : particles) {
            particle.update();
        }
        repaint();
    }

    private class Particle {
        private double x;
        private double y;
        private double vx;
        private double vy;

        public Particle() {
            x = ParticleHeartEffect.this.getWidth() / 2;
            y = ParticleHeartEffect.this.getHeight() / 2;
            double angle = Math.random() * 2 * Math.PI;
            double speed = Math.random() * 2 + 1;
            vx = Math.cos(angle) * speed;
            vy = Math.sin(angle) * speed;
        }

        public void update() {
            x += vx;
            y += vy;

            if (x < 0 || x > ParticleHeartEffect.this.getWidth() || y < 0 || y > ParticleHeartEffect.this.getHeight()) {
                x = ParticleHeartEffect.this.getWidth() / 2;
                y = ParticleHeartEffect.this.getHeight() / 2;
                double angle = Math.random() * 2 * Math.PI;
                double speed = Math.random() * 2 + 1;
                vx = Math.cos(angle) * speed;
                vy = Math.sin(angle) * speed;
            }
        }
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Particle Heart Effect");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 400);
        frame.setLocationRelativeTo(null);

        ParticleHeartEffect particleHeartEffect = new ParticleHeartEffect();
        frame.add(particleHeartEffect);

        frame.setVisible(true);
    }
}

这段代码使用Java的Swing库实现了一个粒子爱心特效。它创建了一个面板，并在面板上绘制了一些红色的小圆点，模拟了粒子的运动轨迹。通过定时器不断更新粒子的位置，实现了流动的爱心形状动画特效。