Solved Removing an ItemStack from your Cursor

I am listening to an InventoryClickEvent and when certain conditions are met, I want to get rid of the item that is being held with the cursor. Is this possible?

 

Try setting the item air ..

Code:java

 
new ItemStack(Material.AIR)
 

 

@MaTaMoR_ No success.

 

@WiseHollow What did you try? Paste code please.

 

I have a method that would be helpful here:

Code:java

/**
 * Returns the inventory slot for the item in a Player's hand.
 *
 * @since 0.1.0
 * @version 0.1.0
 *
 * @throws IllegalStateException if the item is modified during the method
 * @param p The player to get the item slot from
 * @return The non-raw slot number of the item being held
 */
public static synchronized int getHeldItemSlot(Player p) {
    byte[] b = new byte[32];
    new Random().nextBytes(b);
    List<String> bitStr = new ArrayList<>(Arrays.asList(Base64.encode(b)));
    ItemStack[] contents = p.getInventory().getContents();
    //Time is of the essence now
    List<String> oldLore = p.getItemInHand().getItemMeta().getLore();
    p.getItemInHand().getItemMeta().setLore(bitStr);
    for (int w = 0; w < 9; w++) {
        if (contents[w].getItemMeta().getLore().equals(bitStr)) {
            p.getItemInHand().getItemMeta().setLore(oldLore);
            return w;
        }
    }
    p.getItemInHand().getItemMeta().setLore(oldLore);
    throw new IllegalStateException("Race conflict with other plugin while running method!");
}

Essentially with the implementation of this you can do:

Code:java

@EventHandler
public void onClick(InventoryClickEvent event) {
    //other code...
    //Presuming the below is already checked or done, do this on your own
    Player p = (Player) event.getWhoClicked();
    if (p.getItemInHand() != null) {
        p.getInventory().setItem(InventoryUtil.getHeldItemSlot(p), null); //InventoryUtil is the class I use for my method
    }
}

Note that a race condition can occur doing this, so you should be care to note that an IllegalStateException will be thrown if this occurs (very rare). If you want you can handle the error or change my method for your use and instead of throwing the error you can just call the method again:

Code:java

return InventoryUtil.getHeldItemSlot(p);

Which will make it a factor of n^n times more unlikely to happen (i.e. impossible).