mcMMO/src/main/java/com/gmail/nossr50/skills/unarmed/Unarmed.java

package com.gmail.nossr50.skills.unarmed;

import com.gmail.nossr50.config.Config;
import com.gmail.nossr50.util.sounds.SoundManager;
import com.gmail.nossr50.util.sounds.SoundType;
import org.bukkit.entity.Player;
import org.bukkit.event.entity.EntityPickupItemEvent;
import org.bukkit.inventory.ItemStack;

public class Unarmed {
    public static boolean blockCrackerSmoothBrick = Config.getInstance().getUnarmedBlockCrackerSmoothbrickToCracked();
    public static double berserkDamageModifier = 1.5;

    public static void handleItemPickup(Player player, EntityPickupItemEvent event) {
        ItemStack[] storageContents = player.getInventory().getStorageContents();
        ItemStack itemDrop = event.getItem().getItemStack();
        int heldItemSlotID = player.getInventory().getHeldItemSlot();

        int amount = itemDrop.getAmount();
        boolean grabbedItem = false;

        for(int i = 0; i <= storageContents.length-1; i++)
        {
            if(amount <= 0)
                break;

            if(i == heldItemSlotID)
                continue;

            //EMPTY SLOT!
            if(storageContents[i] == null)
            {
                player.getInventory().setItem(i, itemDrop);
                amount = 0;
                grabbedItem = true;
                break;
            }
            else if(itemDrop.isSimilar(storageContents[i]) && storageContents[i].getAmount() < storageContents[i].getMaxStackSize())
            {
                //If we can fit this whole itemstack into this item
                if(amount + storageContents[i].getAmount() <= storageContents[i].getMaxStackSize())
                {
                    ItemStack modifiedAmount = storageContents[i];
                    modifiedAmount.setAmount(amount + storageContents[i].getAmount());

                    player.getInventory().setItem(i, modifiedAmount);
                    grabbedItem = true;
                    amount = 0;
                } else {
                    //Add what we can from this stack
                    ItemStack modifiedAmount = storageContents[i];
                    int amountThatCanFit = storageContents[i].getMaxStackSize() - storageContents[i].getAmount();
                    modifiedAmount.setAmount(amountThatCanFit);

                    player.getInventory().setItem(i, modifiedAmount);

                    //Remove the amount we've added
                    grabbedItem = true;
                    amount -= amountThatCanFit;
                }
            }
        }

        if(amount <= 0)
            event.getItem().remove(); //Cleanup Item
        else
            event.getItem().getItemStack().setAmount(amount);

        event.setCancelled(true);

        if(grabbedItem)
        {
            SoundManager.sendSound(player, player.getLocation(), SoundType.POP);
            player.updateInventory();
        }
    }
}