NMS enchant table

so I am trying to send packets to allow the player to click the enchant options:
however all of my tries don't seem to work

Code:

ContainerEnchantTable enchant = (ContainerEnchantTable) player.activeContainer;
                    enchant.costs[0] = 5;
                    enchant.costs[1] = 8;
                    enchant.costs[2] = 10;
                    player.setContainerData(enchant, 0, enchant.costs[0]);
                    player.setContainerData(enchant, 1, enchant.costs[1]);
                    player.setContainerData(enchant, 2, enchant.costs[2]);

and I tried with simple packets

Code:

PacketPlayOutWindowData data = new PacketPlayOutWindowData(enchant.windowId, 0, enchant.costs[0]);

yet nothing is happening

 

Does anything happen, or is nothing being changed?

 

@CoolDude53 as said nothing is happening.. the buttons stay gray and unchanged and there is no error. I know the code reaches there

 

@guitargun

Took a while, but I managed to get it working. You are going to need to do it in an InventoryClickEvent.

Code:

@EventHandler
    public void onEnchantClick(InventoryClickEvent event)
    {
        new BukkitRunnable()
        {
            @Override
            public void run()
            {
                if (event.getWhoClicked() instanceof Player && event.getInventory().getType().equals(InventoryType.ENCHANTING))
                {
                    ContainerEnchantTableInventory originalInv = (ContainerEnchantTableInventory) ((CraftInventory) event.getInventory()).getInventory();

                    try
                    {
                        Field container = ContainerEnchantTableInventory.class.getDeclaredField("enchantTable");
                        container.setAccessible(true);

                        ContainerEnchantTable original = (ContainerEnchantTable) container.get(originalInv);

                        if (original.enchantSlots.getItem(0) != null)
                        {
                            original.costs[0] = 2;
                            original.costs[1] = 4;
                            original.costs[2] = 6;
                            original.b();
                        }
                    } catch (NoSuchFieldException | IllegalAccessException e)
                    {
                        e.printStackTrace();
                    }
                }
            }
        }.runTask(plugin);
    }

 

@CoolDude53 thx man
also to simplify:

Code:

    new BukkitRunnable() {
                       
                        @Override
                        public void run() {
                            EntityPlayer player = ((CraftPlayer) ((Player) event
                                    .getWhoClicked())).getHandle();
                            ContainerEnchantTable enchant = (ContainerEnchantTable) player.activeContainer;
                            enchant.costs[0] = 5;
                            enchant.costs[1] = 8;
                            enchant.costs[2] = 10;
                            enchant.b();
                        }
                    }.runTask(plugin);

no need for reflection. you just need to entityplayer since the containerenchanttableis unique for each player

 

That container didn't return an ContainerEnchantmentTable when I tested it, but I only tested it in an InventoryOpenEvent.