coneParticles

public static void cone(Player player){
        final Location loc = player.getLocation();
        new BukkitRunnable() {
            double t = 0;
            double r = 1.5;
            @Override
            public void run() {
                t += Math.PI/8;
                r -= 0.1;
                double x = r*Math.cos(t);
                double y = 0.5*t;
                double z = r*Math.sin(t);
                double xb = -r*Math.cos(t);
                double zb = -r*Math.sin(t);
                double xc = r*Math.cos(t+Math.PI/2);
                double zc = r*Math.sin(t+Math.PI/2);
                double xd = -r*Math.cos(t+Math.PI/2);
                double zd = -r*Math.sin(t+Math.PI/2);
                loc.add(x, y, z);
                ParticleEffect.FIREWORKS_SPARK.display(0, 0, 0, 0, 5, loc, 100);
                loc.subtract(x, y, z);
                loc.add(xb, y, zb);
                ParticleEffect.FIREWORKS_SPARK.display(0, 0, 0, 0, 5, loc, 100);
                loc.subtract(xb, y, zb);
                loc.add(xc, y, zc);
                ParticleEffect.FIREWORKS_SPARK.display(0, 0, 0, 0, 5, loc, 100);
                loc.subtract(xc, y, zc);
                loc.add(xd, y, zd);
                ParticleEffect.FIREWORKS_SPARK.display(0, 0, 0, 0, 5, loc, 100);
                loc.subtract(xd, y, zd);
                if(r <= 0.4){
                    this.cancel();
                }
            }
        }.runTaskTimer(pl, 0, 1);
    }