[1.16.4] AnvilUpdateEvent

[Luis_ST]

Ijust use the AnvilUpdateEvent to transfer enchantments from an item to a book all work fine but i cant take the item from the output slot

I just creat this:

 

	@SubscribeEvent
	public static void AnvilUpdateEvent(net.minecraftforge.event.AnvilUpdateEvent event) {
		
		ItemStack inputLeft = event.getLeft();
		ItemStack inputRight = event.getRight();
		
		if (inputLeft != null && inputRight != null) {
			
			if (inputLeft.isEnchanted()) {
				
				Map<Enchantment, Integer> enchantments = EnchantmentHelper.getEnchantments(inputLeft);
				
				if (inputRight.getItem() instanceof BookItem) {
					
					if (!inputRight.isEnchanted()) {
						
						ItemStack output = new ItemStack(Items.ENCHANTED_BOOK);
						
						for(Entry<Enchantment, Integer> entry : enchantments.entrySet()) {
							
							Enchantment enchantment = entry.getKey();
							output.addEnchantment(enchantment, entry.getValue());
							
						}
						
						
						event.setOutput(output);
						
					}
					
				}
				
			}
			
		}
		
	}

 

 

[Luis_ST]

19 minutes ago, diesieben07 said:

For enchanted books EnchantedBookItem.addEnchantment must be used instead of ItemStack#addEnchantment.

The Enchanted Book looks now like a "normal" EnchantedBook but i cant still take the item (the Enchanted Book) form the slot

 

	@SubscribeEvent
	public static void AnvilUpdateEvent(net.minecraftforge.event.AnvilUpdateEvent event) {
		
		ItemStack inputLeft = event.getLeft();
		ItemStack inputRight = event.getRight();
		
		if (inputLeft != null && inputRight != null) {
			
			if (inputLeft.isEnchanted()) {
				
				Map<Enchantment, Integer> enchantments = EnchantmentHelper.getEnchantments(inputLeft);
				
				if (inputRight.getItem() instanceof BookItem) {
					
					if (!inputRight.isEnchanted()) {
						
						ItemStack output = new ItemStack(Items.ENCHANTED_BOOK);
						
						for(Entry<Enchantment, Integer> entry : enchantments.entrySet()) {
							
							Enchantment enchantment = entry.getKey();
							EnchantedBookItem.addEnchantment(output, new EnchantmentData(enchantment, entry.getValue()));
							
						}
						
						event.setOutput(output);
						
					}
					
				}
				
			}
			
		}
		
	}

 

Edited December 30, 2020 by Luis_ST
add code

[Luis_ST]

2 hours ago, diesieben07 said:

You need to set the maximum cost as well.

It works fine but if I try to give the player the item from which he "removes" a random enchantment, the player gets the item 4 times and if I take the unenchanted book from the slot I get a new random enchantment, is there a way to prevent this

 

this is now my code:

	@SubscribeEvent
	public static void AnvilUpdateEvent(net.minecraftforge.event.AnvilUpdateEvent event) {
		
		ItemStack inputLeft = event.getLeft();
		ItemStack inputRight = event.getRight();
		PlayerEntity player = event.getPlayer();
		
		if (inputLeft != null && inputRight != null) {
			
			if (inputLeft.isEnchanted()) {
				
				Map<Enchantment, Integer> enchantments = EnchantmentHelper.getEnchantments(inputLeft);
				int mapSize = enchantments.size();
				
				if (inputRight.getItem() instanceof BookItem) {
					
					if (!inputRight.isEnchanted()) {
						
						ItemStack output = new ItemStack(Items.ENCHANTED_BOOK);
						
						List<Enchantment> enchantmenList = new ArrayList<Enchantment>(enchantments.keySet());
						int random = new Random().nextInt(enchantmenList.size());
						Enchantment randomEnchantment = enchantmenList.get(random);
						
						List<Integer> levelList = new ArrayList<Integer>(enchantments.values());
						int randomEnchantmentLevel = levelList.get(random);
								
						EnchantedBookItem.addEnchantment(output, new EnchantmentData(randomEnchantment, randomEnchantmentLevel));
						
						event.setCost(1 + mapSize);
						event.setOutput(output);
						
						ItemStack item = inputLeft.copy();
						enchantments.remove(randomEnchantment);
						EnchantmentHelper.setEnchantments(enchantments, item);
						ItemHandlerHelper.giveItemToPlayer(player, item);
						
					}
					
				}
				
			}
			
		}
		
	}

 

Edited December 30, 2020 by Luis_ST
add code