[1.16.4] Enchant a BookItem with random Enchantment

[Luis_ST]

how do i enchant a book with a random enchantment i need this for my costum trade

i just use this but i think ist not correct:

	private static ItemStack EnchantedBook(int level) {
		
		ItemStack book = new ItemStack(Items.ENCHANTED_BOOK);
		Random rng = new Random();
		ItemStack dummy = EnchantmentHelper.addRandomEnchantment(rng, new ItemStack(Items.DIAMOND_SWORD), level, true);
		Map<Enchantment, Integer> map = EnchantmentHelper.getEnchantments(dummy);
		List<Enchantment> enchantmenList = new ArrayList<Enchantment>(map.keySet());
		List<Integer> levelList = new ArrayList<Integer>(map.values());
		EnchantedBookItem.addEnchantment(book, new EnchantmentData(enchantmenList.get(0), levelList.get(0)));
		
		return book;
		
	}

 

Edited January 13, 2021 by Luis_ST

[Draco18s]

Maybe use a rng.Next instead of 0?

[Luis_ST]

45 minutes ago, Draco18s said:

Maybe use a rng.Next instead of 0?

i just use this:

	private static BasicTrade enchantedBook(int xp) {
		
		Random rng = new Random();
		ItemStack book = new ItemStack(Items.ENCHANTED_BOOK);
		List<Enchantment> enchantments = Registry.ENCHANTMENT.stream().filter((enchantment) -> {
			return !enchantment.isCurse();
		}).collect(Collectors.toList());
		Enchantment enchantment = enchantments.get(rng.nextInt(enchantments.size()));
		int enchLevel = MathHelper.nextInt(rng, enchantment.getMinLevel(), enchantment.getMaxLevel());
		EnchantedBookItem.addEnchantment(book, new EnchantmentData(enchantment, enchLevel));
		int count = 2 + rng.nextInt(5 + enchLevel * 10) + 3 * enchLevel;
		
		return new BasicTrade(new ItemStack(Items.EMERALD, count > 64 ? 64 : count), new ItemStack(Items.BOOK), book, 16, xp, 0.2f);
		
	}

and it work fine