java类org.bukkit.inventory.meta.FireworkMeta的实例源码

public void remove(boolean got)
{
    this.entityTitle.remove();
    this.entityItem.remove();
    this.entityBase.remove();

    Color fwColor = got ? Color.BLUE : Color.RED;

    Firework fw = this.location.getWorld().spawn(this.location.clone().add(0.5, 1, 0.5), Firework.class);
    FireworkMeta fwm = fw.getFireworkMeta();
    FireworkEffect effect = FireworkEffect.builder().withColor(fwColor).with(this.parent.isSpecial() ? FireworkEffect.Type.STAR : FireworkEffect.Type.BALL).build();

    fwm.addEffects(effect);
    fwm.setPower(0);

    fw.setFireworkMeta(fwm);

    Bukkit.getScheduler().runTaskLater(SamaGamesAPI.get().getPlugin(), fw::detonate, 1L);

    this.particlesTask.cancel();

    this.alive = false;
}

public void playFirework(Player p, Location loc, Color color1, Color color2, FireworkEffect.Type type) {
    loc.add(0.5, 1, 0.5);
    Firework fw = p.getWorld().spawn(loc, Firework.class);
    FireworkMeta fwmeta = ((org.bukkit.entity.Firework) fw).getFireworkMeta();
    FireworkEffect.Builder builder = FireworkEffect.builder();

    builder.withFlicker();
    builder.withFade(color2);
    builder.withColor(color1);
    builder.with(type);
    fwmeta.clearEffects();
    Field f;
    try {
        f = fwmeta.getClass().getDeclaredField("power");
        f.setAccessible(true);
        f.set(fwmeta, -1);
    } catch (Exception e) {
        return;
    }
    fwmeta.addEffect(builder.build());
    fw.setFireworkMeta(fwmeta);
}

public static void launchfw(Hub hub, Location location, final FireworkEffect effect)
{
    Firework fw = (Firework) location.getWorld().spawnEntity(location, EntityType.FIREWORK);
    FireworkMeta fwm = fw.getFireworkMeta();
    fwm.addEffect(effect);
    fwm.setPower(0);
    fw.setFireworkMeta(fwm);
    ((CraftFirework) fw).getHandle().setInvisible(true);

    hub.getServer().getScheduler().runTaskLater(hub, () ->
    {
        World world = (((CraftWorld) location.getWorld()).getHandle());
        EntityFireworks fireworks = ((CraftFirework) fw).getHandle();
        world.broadcastEntityEffect(fireworks, (byte) 17);
        fireworks.die();
    }, 1);
}

public void launchFireworkDisplay(final World w, final Location loc) {
    Firework fw = (Firework) w.spawn(loc.clone().add(new Vector(getRandomNum(5, -5), 1, getRandomNum(5, -5))), Firework.class);
    FireworkMeta meta = fw.getFireworkMeta();
    FireworkEffect effect = SkyWarsReloaded.getNMS().getFireworkEffect(getRandomColor(),getRandomColor(), getRandomColor(), getRandomColor(), getRandomColor(), getRandomType());
    meta.addEffect(effect);
    meta.setPower(getRandomNum(4, 1));
    fw.setFireworkMeta(meta);
    fireworksCount++;
    if (fireworksCount < ((SkyWarsReloaded.getCfg().getTimeAfterGame() - 5)*4)) {
        SkyWarsReloaded.get().getServer().getScheduler().scheduleSyncDelayedTask(SkyWarsReloaded.get(),  new Runnable() {
            public void run() {
                launchFireworkDisplay(w, loc);
            }
        }, 5);
    }
}

public static void shot(final Player p)
{


        Location loc = p.getLocation();
        Firework fw = (Firework)loc.getWorld().spawn(loc, Firework.class);
        FireworkMeta data = fw.getFireworkMeta();
        Color c = null;
        Random r = new Random();
        int i = r.nextInt(5) + 1;
        if (i == 1) {
          c = Color.BLUE;
        } else if (i == 2) {
          c = Color.RED;
        } else if (i == 3) {
          c = Color.GREEN;
        } else if (i == 4) {
          c = Color.MAROON;
        } else if (i == 5) {
          c = Color.ORANGE;
        }
        data.addEffects(new FireworkEffect[] { FireworkEffect.builder().withColor(c).with(FireworkEffect.Type.STAR).build() });
        data.setPower(1);
        fw.setFireworkMeta(data);

}

public static ItemMeta parse(Element xml, ItemMeta source) {
    if (source instanceof BannerMeta) {
        return parseBanner(xml, (BannerMeta) source);
    } else if (source instanceof BookMeta) {
        return parseBook(xml, (BookMeta) source);
    } else if (source instanceof EnchantmentStorageMeta) {
        return parseEnchantmentStorage(xml, (EnchantmentStorageMeta) source);
    } else if (source instanceof FireworkMeta) {
        return parseFirework(xml, (FireworkMeta) source);
    } else if (source instanceof FireworkEffectMeta) {
        return parseFireworkEffect(xml, (FireworkEffectMeta) source);
    } else if (source instanceof LeatherArmorMeta) {
        return parseLeatherArmor(xml, (LeatherArmorMeta) source);
    } else if (source instanceof MapMeta) {
        return parseMap(xml, (MapMeta) source);
    } else if (source instanceof PotionMeta) {
        return parsePotion(xml, (PotionMeta) source);
    } else if (source instanceof SkullMeta) {
        return parseSkull(xml, (SkullMeta) source);
    } else if (source instanceof SpawnEggMeta) {
        return parseSpawnEgg(xml, (SpawnEggMeta) source);
    }

    return source;
}

public static void shot(final Player p)
{


        Location loc = p.getLocation();
        Firework fw = (Firework)loc.getWorld().spawn(loc, Firework.class);
        FireworkMeta data = fw.getFireworkMeta();
        Color c = null;
        Random r = new Random();
        int i = r.nextInt(5) + 1;
        if (i == 1) {
          c = Color.BLUE;
        } else if (i == 2) {
          c = Color.RED;
        } else if (i == 3) {
          c = Color.GREEN;
        } else if (i == 4) {
          c = Color.MAROON;
        } else if (i == 5) {
          c = Color.ORANGE;
        }
        data.addEffects(new FireworkEffect[] { FireworkEffect.builder().withColor(c).with(FireworkEffect.Type.STAR).build() });
        data.setPower(1);
        fw.setFireworkMeta(data);

}

@Override
public boolean apply(@Nullable ItemStack item1, @Nullable ItemStack item2) {
  Boolean b = precondition(item1, item2, true);
  if (b != null) {
    return b;
  }
  if (item1.getItemMeta() instanceof FireworkMeta
      && item2.getItemMeta() instanceof FireworkMeta) {
    return ((FireworkMeta) item1.getItemMeta()).getEffects()
        .equals(((FireworkMeta) item2.getItemMeta()).getEffects());
  } else if (item1.getItemMeta() instanceof FireworkEffectMeta
             && item2.getItemMeta() instanceof FireworkEffectMeta) {
    return ((FireworkEffectMeta) item1.getItemMeta()).getEffect()
        .equals(((FireworkEffectMeta) item2.getItemMeta()).getEffect());
  }
  return false;
}

/**
 * Removes a {@link FireworkEffect} by index from this item, assuming it is a firework. If it is
 * a
 * firework charge, its one and only effect is removed, disregarding the index given.
 * <p />
 * <b>UNSAFE</b>
 *
 * @param index index of the firework to remove
 *
 * @return this item builder instance, for chaining
 */
public ItemBuilder fireworkRemove(int index) {
  boolean b = isFireworkEffectMeta();
  if (b || isFireworkMeta()) {
    try {
      if (b) {
        ((FireworkEffectMeta) this.itemMeta).setEffect(null);
      } else {
        ((FireworkMeta) this.itemMeta).removeEffect(index);
      }
    } catch (Exception e) {
      if (!this.failSilently) {
        e.printStackTrace();
      }
    }
  }
  return this;
}

/**
 * Clears all {@link FireworkEffect}s on this item, assuming it is a firework or firework charge.
 * <p />
 * <b>UNSAFE</b>
 *
 * @return this item builder instance, for chaining
 */
public ItemBuilder fireworkClear() {
  boolean b = isFireworkEffectMeta();
  if (b || isFireworkMeta()) {
    try {
      if (b) {
        ((FireworkEffectMeta) this.itemMeta).setEffect(null);
      } else {
        ((FireworkMeta) this.itemMeta).clearEffects();
      }
    } catch (Exception e) {
      if (!this.failSilently) {
        e.printStackTrace();
      }
    }
  }
  return this;
}

@EventHandler
public void KimuraFirework(PlayerDeathEvent event) {
    Player player = event.getEntity();

    // check if player is Kimura or not
    if (!player.getPlayerListName().contains("schinchig")) return;

    // spawn Firework
    World world = player.getWorld();
    Firework firework = (Firework) world.spawnEntity(player.getLocation(), EntityType.FIREWORK);

    // set firework random meta infomations
    FireworkMeta meta = firework.getFireworkMeta();
    FireworkEffect.Builder builder = FireworkEffect.builder();

    builder.withColor(getRandomColors(1 + rand.nextInt(5)));
    builder.withFade(getRandomColors(1 + rand.nextInt(3)));
    builder.flicker(rand.nextBoolean());
    builder.trail(rand.nextBoolean());
    builder.with(FireworkEffect.Type.values()[rand.nextInt(5)]);

    meta.setPower(1 + rand.nextInt(4));

    meta.addEffect(builder.build());
    firework.setFireworkMeta(meta);
}

public void loop(){
    Bukkit.getScheduler().scheduleSyncRepeatingTask(Bukkit.getServer().getPluginManager().getPlugin("gFeatures"), new Runnable() {
        public void run(){
            try{
                if(Basic.flagger instanceof Player){
                    Firework fw = (Firework) Bukkit.getServer().getWorld(Basic.mapName).spawnEntity(Basic.flagger.getLocation(), EntityType.FIREWORK);
                    FireworkMeta fwm = fw.getFireworkMeta();
                    FireworkEffect effect = FireworkEffect.builder().withColor(Color.WHITE).with(Type.BALL).build();

                    fwm.addEffect(effect);
                    fwm.setPower(2);

                    fw.setFireworkMeta(fwm);
                }
            }
            catch(Exception e){}
        }
       }, 80L, 80L);
}

public static FireworkMeta getFireworkMeta(JSONObject json) {
    try {
        FireworkMeta dummy = (FireworkMeta) new ItemStack(Material.FIREWORK).getItemMeta();
        dummy.setPower(json.optInt("power", 1));
        JSONArray effects = json.getJSONArray("effects");
        for (int i = 0; i < effects.length(); i++) {
            JSONObject effectDto = effects.getJSONObject(i);
            FireworkEffect effect = FireworkEffectSerialization.getFireworkEffect(effectDto);
            if (effect != null)
                dummy.addEffect(effect);
        }
        return dummy;
    } catch (JSONException e) {
        e.printStackTrace();
        return null;
    }
}

public void spawnFirework(Location location) {
    Firework fw = (Firework) location.getWorld().spawnEntity(location, EntityType.FIREWORK);
    FireworkMeta fwm = fw.getFireworkMeta();
    Random r = new Random();
    int rt = r.nextInt(4) + 1;
    FireworkEffect.Type type = FireworkEffect.Type.BALL;
    if (rt == 1) type = FireworkEffect.Type.BALL;
    if (rt == 2) type = FireworkEffect.Type.BALL_LARGE;
    if (rt == 3) type = FireworkEffect.Type.BURST;
    if (rt == 4) type = FireworkEffect.Type.CREEPER;
    if (rt == 5) type = FireworkEffect.Type.STAR;
    int r1i = r.nextInt(17) + 1;
    int r2i = r.nextInt(17) + 1;
    Color c1 = getColor(r1i);
    Color c2 = getColor(r2i);
    FireworkEffect effect = FireworkEffect.builder().flicker(r.nextBoolean()).withColor(c1).withFade(c2).with(type).trail(r.nextBoolean()).build();
    fwm.addEffect(effect);
    int rp = r.nextInt(2) + 1;
    fwm.setPower(rp);
    fw.setFireworkMeta(fwm);
}

/**
 * Make a packet object
 *
 * @param location       Location to play firework effect at
 * @param fireworkEffect FireworkEffect to play
 * @return Packet constructed by the parameters
 */
private static Object makePacket(Location location, FireworkEffect fireworkEffect) {
    try {
        Firework firework = location.getWorld().spawn(location, Firework.class);
        FireworkMeta data = firework.getFireworkMeta();
        data.clearEffects();
        data.setPower(1);
        data.addEffect(fireworkEffect);
        firework.setFireworkMeta(data);
        Object nmsFirework = ReflectionUtil.getHandle(firework);
        firework.remove();
        return PACKET_PLAY_OUT_ENTITY_STATUS.newInstance(nmsFirework, (byte) 17);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

/**
 * Event handler called when an explosive is primed.
 * 
 * We use it to detect impending creeper explosions. The event is fired
 * immediately before the explosion.
 */
@EventHandler(ignoreCancelled = true)
public void onCreeperDetonate(ExplosionPrimeEvent event) {
    if (!CONFIG.isAffectedWorld(event)) {
        return;
    }

    if (event.getEntityType() == EntityType.CREEPER) {
        event.setRadius((float) CONFIG.BLAST_RADIUS_SCALE * event.getRadius());

        Entity creeper = event.getEntity();
        launchReinforcements(creeper);

        Location origin = creeper.getLocation();
        World world = origin.getWorld();
        Firework firework = (Firework) world.spawnEntity(origin, EntityType.FIREWORK);
        if (firework != null) {
            FireworkMeta meta = firework.getFireworkMeta();
            meta.setPower(random(0, 1));
            meta.addEffect(randomFireworkFffect(true));
            firework.setFireworkMeta(meta);
        }
    }
}

public static void shootRandomFirework(Location loc, int height) {
    Firework f = (Firework) loc.getWorld().spawnEntity(loc, EntityType.FIREWORK);
    FireworkMeta fm = f.getFireworkMeta();
    fm.setPower(height);
    int effectAmount = random.nextInt(3) + 1;
    for(int i = 0; i < effectAmount; i++) {
        Builder b = FireworkEffect.builder();
        int colorAmount = random.nextInt(3) + 1;
        for(int ii = 0; ii < colorAmount; ii++) {
            b.withColor(Color.fromBGR(random.nextInt(256), random.nextInt(256), random.nextInt(256)));
        }
        b.with(Type.values()[random.nextInt(Type.values().length)]);
        b.flicker(random.nextInt(2) == 0 ? false : true);
        b.trail(random.nextInt(2) == 0 ? false : true);
        fm.addEffect(b.build());
    }
    f.setFireworkMeta(fm);
}

public static void spawnFirework(Location loc) {
    Random colour = new Random();

    Firework fw = loc.getWorld().spawn(loc, Firework.class);
    FireworkMeta fwMeta = fw.getFireworkMeta();

    Type fwType = Type.BALL_LARGE;

    int c1i = colour.nextInt(17) + 1;
    int c2i = colour.nextInt(17) + 1;

    Color c1 = getFWColor(c1i);
    Color c2 = getFWColor(c2i);

    FireworkEffect effect = FireworkEffect.builder().withFade(c2).withColor(c1).with(fwType).build();

    fwMeta.addEffect(effect);
    fwMeta.setPower(1);
    fw.setFireworkMeta(fwMeta);
}

public void playFirework(Location loc, FireworkEffect fe) throws Exception {
    World world = loc.getWorld();
    Firework fw = (Firework) world.spawn(loc, Firework.class);
    Object nms_world = null;
    Object nms_firework = null;
    if (world_getHandle == null) {
        world_getHandle = getMethod(world.getClass(), "getHandle");
        firework_getHandle = getMethod(fw.getClass(), "getHandle");
    }
    nms_world = world_getHandle.invoke(world, (Object[]) null);
    nms_firework = firework_getHandle.invoke(fw, (Object[]) null);
    if (nms_world_broadcastEntityEffect == null) {
        nms_world_broadcastEntityEffect = getMethod(nms_world.getClass(),
                "broadcastEntityEffect");
    }
    FireworkMeta data = (FireworkMeta) fw.getFireworkMeta();
    data.clearEffects();
    data.setPower(1);
    data.addEffect(fe);
    fw.setFireworkMeta(data);
    nms_world_broadcastEntityEffect.invoke(nms_world, new Object[] {
            nms_firework, (byte) 17 });
    fw.remove();
}

public static void spawnFirework(Location loc) {
Random colour = new Random();

Firework fw = loc.getWorld().spawn(loc, Firework.class);
FireworkMeta fwMeta = fw.getFireworkMeta();
Type fwType = Type.BALL_LARGE;

int c1i = colour.nextInt(17) + 1;
int c2i = colour.nextInt(17) + 1;

Color c1 = getFWColor(c1i);
Color c2 = getFWColor(c2i);

FireworkEffect effect = FireworkEffect.builder().withFade(c2).withColor(c1).with(fwType).build();

fwMeta.addEffect(effect);
fwMeta.setPower(1);
fw.setFireworkMeta(fwMeta);
}

public static void Fireworks(Player p){
    Firework rfw = (Firework) p.getWorld()
            .spawnEntity(p.getLocation(),EntityType.FIREWORK);
    FireworkMeta rfwm = rfw.getFireworkMeta();
    FireworkEffect.Type rtype = FireworkEffect.Type.BALL_LARGE;
    FireworkEffect reffect = (FireworkEffect.builder().trail(false)
            .withColor(Color.RED).flicker(false).with(rtype).build());
    rfwm.addEffect(reffect);
    rfwm.setPower(0);
    rfw.setFireworkMeta(rfwm);

    Firework gfw = (Firework) p.getWorld()
            .spawnEntity(p.getLocation(),EntityType.FIREWORK);
    FireworkMeta gfwm = gfw.getFireworkMeta();
    FireworkEffect.Type gtype = FireworkEffect.Type.BALL_LARGE;
    FireworkEffect geffect = (FireworkEffect.builder().trail(false)
            .withColor(Color.LIME).flicker(false).with(gtype).build());
    gfwm.addEffect(geffect);
    gfwm.setPower(0);
    gfw.setFireworkMeta(gfwm);
}

public void shot(Location location)
{
    Firework firework = (Firework)location.getWorld().spawnEntity(location, EntityType.FIREWORK);
    FireworkEffect.Builder effect = FireworkEffect.builder();

    for (int cc = 1; cc <= colorCounter; cc++) {
        effect.withColor(colors[cc]);
    }

    FireworkMeta meta = firework.getFireworkMeta();
    effect.with(type);
    if (this.fadeTo != null) {
        effect.withFade(fadeTo);
    }

    meta.setPower(this.duration);
    meta.addEffect(effect.build());
    firework.setFireworkMeta(meta);
}

public ItemStack getAsStack(int _stackSize)
{
    ItemStack item = new ItemStack(Material.FIREWORK, _stackSize);
    FireworkEffect.Builder effect = FireworkEffect.builder();

    String colorString = "";

    for (int cc = 1; cc <= colorCounter; cc++) {
        effect.withColor(colors[cc]);
        colorString = colorString + " " + this.colorToString(colors[cc]);
    }

    FireworkMeta meta = (FireworkMeta) item.getItemMeta();
    meta.setDisplayName("Firework: " + colorString + " " + this.effectToString(this.type)  );
    effect.with(type);

    if (this.fadeTo != null) {
        effect.withFade(fadeTo);
    }

    meta.setPower(this.duration);
    meta.addEffect(effect.build());
    item.setItemMeta(meta);

    return item;
}

/**
 * Gets a String representing all special meta of this ItemStack, if any.
 *
 * @param is         the ItemStack
 * @param separators the separators
 *
 * @return a String representing this ItemStack's special meta or an empty String
 *
 * @throws InventoryUtilException if something goes wrong
 */
public static String getSpecialMetaString(final ItemStack is, final String[] separators) throws InventoryUtilException {
    final ItemMeta meta = is.getItemMeta();

    if (meta instanceof BookMeta) {
        return getBookMetaString((BookMeta)meta);
    } else if (meta instanceof EnchantmentStorageMeta) {
        return getEnchantmentStorageMetaString((EnchantmentStorageMeta)meta, separators);
    } else if (meta instanceof FireworkEffectMeta) {
        return getFireworkEffectMetaString((FireworkEffectMeta)meta);
    } else if (meta instanceof FireworkMeta) {
        return getFireworkMetaString((FireworkMeta)meta, separators);
    } else if (meta instanceof LeatherArmorMeta) {
        return getLeatherArmorMetaString((LeatherArmorMeta)meta);
    } else if (meta instanceof MapMeta) {
        return getMapMetaString((MapMeta)meta);
    } else if (meta instanceof PotionMeta) {
        return getPotionMetaString((PotionMeta)meta, separators);
    } else if (meta instanceof SkullMeta) {
        return getSkullMetaString((SkullMeta)meta);
    } else {
        throw new InventoryUtilException("Unknown Meta type '" + meta.getClass().getName() + "', please report this to the author (Ribesg)!");
    }
}

/**
 * Launch a firework at a given location with specified properties
 * 
 * @param spawnLocation the location for the firework
 * @param type the firework type
 * @param power the power of the firework
 * @param colors the colors of the fireworks
 * @param fadecolors the colors for the firework to fade to
 * @param trail if the firework should leave a trail
 * @param flicker if the firework should flicker
 */
static public Firework LaunchFirework(Location spawnLocation, FireworkEffect.Type type, int power, ArrayList<Color> colors, ArrayList<Color> fadecolors, boolean flicker, boolean trail) {

    Firework firework = spawnLocation.getWorld().spawn(spawnLocation, Firework.class);
    FireworkMeta metadata = firework.getFireworkMeta();

    Builder builder = FireworkEffect.builder();
    builder.with(type);
    builder.flicker(flicker);
    builder.trail(trail);
    builder.withColor(colors);
    builder.withFade(fadecolors);

    FireworkEffect effect = builder.build();
    metadata.addEffect(effect);
    metadata.setPower(power);

    firework.setFireworkMeta(metadata);

    return firework;
}

@EventHandler
public void onRankUpEvent(RankUpEvent event){
    Player player = Bukkit.getPlayer(event.getUserID());
    User user = userManager.getUser(event.getUserID());
    user.addRank();
    user.addToken();
    user.scoreboard();
    player.sendMessage(ChatColor.AQUA + "You Ranked up!");
    Location loc = player.getLocation();
    Firework firework = (Firework) loc.getWorld().spawnEntity(loc, EntityType.FIREWORK);
    FireworkMeta meta = firework.getFireworkMeta();
    FireworkEffect fe = FireworkEffect.builder().with(Type.BALL_LARGE).withColor(Color.BLUE).build();
    meta.addEffect(fe);
    meta.setPower(3);
    firework.setFireworkMeta(meta);
}

protected final Firework fire(Location location, IConsumableDetails details, Object userObject) {
    final Firework firework = (Firework) location.getWorld().spawnEntity(location, EntityType.FIREWORK);
    FireworkMeta meta = firework.getFireworkMeta();
    final FireworkPlayerDetails fDetails = FireworkPlayerDetails.fromConsumableDetails(details, firework, userObject);
    if (!onFire(fDetails, meta)) {
        firework.remove();
        return null;
    }
    firework.setFireworkMeta(meta);

    final BukkitTask[] task = new BukkitTask[1];
    task[0] = Bukkit.getScheduler().runTaskTimer(getPlugin(), new Runnable() {
        @Override
        public void run() {
            if (firework.isDead()) {
                onExplode(fDetails);
                task[0].cancel();
            }
            firework.setTicksLived(Integer.MAX_VALUE);
        }
    }, 10 * (1 + meta.getPower()), 2);
    return firework;
}

@EventHandler
public void onBowShoot(EntityShootBowEvent event) {
    FireworkMeta fireworkMeta = (FireworkMeta) (new ItemStack(
            Material.FIREWORK)).getItemMeta();
    Firework firework = (Firework) event
            .getProjectile()
            .getLocation()
            .getWorld()
            .spawnEntity(event.getProjectile().getLocation(),
                    EntityType.FIREWORK);

    fireworkMeta.addEffect(FireworkEffect.builder().with(Type.BURST)
            .withColor(Color.RED).withColor(Color.WHITE)
            .withColor(Color.BLUE).withTrail().build());
    firework.setFireworkMeta(fireworkMeta);
    event.getProjectile().setPassenger(firework);
}

private void randomizeFirework(Firework firework) {
    FireworkEffect.Builder effect = FireworkEffect.builder();
    FireworkMeta meta = firework.getFireworkMeta();

    // construct [1, 3] random colours
    int numColours = r.nextInt(3) + 1;
    Color[] colourArray = new Color[numColours];
    for (int i = 0; i < numColours; i++) {
        colourArray[i] = getColor(r.nextInt(17) + 1);
    }

    // randomize effects
    effect.withColor(colourArray);
    effect.flicker(r.nextDouble() < 0.5);
    effect.trail(r.nextDouble() < 0.5);
    effect.with(FireworkEffect.Type.values()[r.nextInt(FireworkEffect.Type.values().length)]);

    // set random effect and randomize power
    meta.addEffect(effect.build());
    meta.setPower(r.nextInt(2) + 1);

    // apply it to the given firework
    firework.setFireworkMeta(meta);
}

@EventHandler
public void onNewLevel(PlayerLevelChangeEvent event) {
    Player player = event.getPlayer();
    if (event.getNewLevel() == 30) {
        MessageFormat formatter = new MessageFormat(Language.getBundle().getString("exp-treasury.reminder"));
        player.sendMessage(formatter.format(new Object[]{30}));
    }

    if (event.getOldLevel() < event.getNewLevel() && bank.getConfig().getBoolean("fireworks")) {
        Firework firework = player.getWorld().spawn(event.getPlayer().getLocation(), Firework.class);
        FireworkMeta meta = firework.getFireworkMeta();
        meta.addEffects(FireworkEffect.builder().withColor(Color.BLACK, Color.YELLOW, Color.RED).withFlicker().withFade(Color.YELLOW, Color.RED, Color.BLACK).withTrail().build());
        meta.setPower(1);
        firework.setFireworkMeta(meta);
    }

}