import cn.nukkit.level.particle.SmokeParticle; //导入依赖的package包/类
@Override
public void onRun(int currentTick) {
    int diff = currentTick - startAction;
    double p = (double) diff / 20;
    double f = Math.min((p * p + p * 2) / 3, 1) * 2;
    Vector3 motion = new Vector3(
            -Math.sin(player.yaw / 180d * Math.PI) * Math.cos(player.pitch / 180d * Math.PI),
            -Math.sin(player.pitch / 180d * Math.PI),
            Math.cos(player.yaw / 180d * Math.PI) * Math.cos(player.pitch / 180d * Math.PI)
    ).multiply(f);
    Vector3 point = new Vector3(player.x, player.y + player.getEyeHeight(), player.z);
    while (!player.level.getBlock(point).isSolid()) {
        player.level.addParticle(new SmokeParticle(point), player);
        // TODO: Find a new way that visible from long distance
        motion.y -= 0.05f;
        point.x += motion.x;
        point.y += motion.y;
        point.z += motion.z;
    }
}
 

import cn.nukkit.level.particle.SmokeParticle; //导入依赖的package包/类
@Override
public void close() {
    super.close();

    if (linkedEntity instanceof Player) {
        linkedEntity.riding = null;
        linkedEntity = null;
    }

    SmokeParticle particle = new SmokeParticle(this);
    level.addParticle(particle);
}
 

import cn.nukkit.level.particle.SmokeParticle; //导入依赖的package包/类
@Override
public void close() {
    super.close();

    if (this.linkedEntity instanceof Player) {
        this.linkedEntity.riding = null;
    }

    SmokeParticle particle = new SmokeParticle(this);
    this.level.addParticle(particle);
}
 

import cn.nukkit.level.particle.SmokeParticle; //导入依赖的package包/类
/**
 * Creates fizzing sound and smoke. Used when lava flows over block or mixes with water.
 */
protected void triggerLavaMixEffects(Vector3 pos) {
    this.getLevel().addSound(new FizzSound(pos.add(0.5, 0.5, 0.5), 2.6F + (ThreadLocalRandom.current().nextFloat() - ThreadLocalRandom.current().nextFloat()) * 0.8F));

    for (int i = 0; i < 8; ++i) {
        this.getLevel().addParticle(new SmokeParticle(pos.add(Math.random(), 1.2, Math.random())));
    }
}