ItemSharedSouls

package com.techmage.magetech.item;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.world.World;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

import java.util.List;

public class ItemShardSouls extends ItemMageTech
{
    private static final int maxSouls = 5000;

    public ItemShardSouls()
    {
        super();

        this.setMaxStackSize(1);
    }

    @Override
    public ItemStack onItemRightClick(ItemStack itemStackIn, World worldIn, EntityPlayer playerIn)
    {
        if (hasSoulsTag(itemStackIn))
        {
            if (itemStackIn.getTagCompound().getInteger("storedSouls") + 100 <= maxSouls)
                itemStackIn.getTagCompound().setInteger("storedSouls", itemStackIn.getTagCompound().getInteger("storedSouls") + 100);

            else
                itemStackIn.getTagCompound().setInteger("storedSouls", maxSouls);
        }

        else
        {
            itemStackIn.setTagCompound(new NBTTagCompound());
            itemStackIn.getTagCompound().setInteger("storedSouls", 100);
        }

        return itemStackIn;
    }

    @Override
    @SideOnly(Side.CLIENT)
    public void addInformation(ItemStack stack, EntityPlayer playerIn, List<String> tooltip, boolean advanced)
    {
        if (hasSoulsTag(stack))
            tooltip.add(stack.getTagCompound().getInteger("storedSouls") + " : " + maxSouls);

        else
            tooltip.add("0 : " + maxSouls);
    }

    private boolean hasSoulsTag(ItemStack stack)
    {
        return stack.hasTagCompound() && stack.getTagCompound().hasKey("storedSouls");
    }

    public int getStoredSouls(ItemStack stack)
    {
        if (hasSoulsTag(stack))
            return stack.getTagCompound().getInteger("storedSouls");

        else
            return 0;
    }

    public void useSouls(ItemStack stack, int amount)
    {
        if (hasSoulsTag(stack))
            stack.getTagCompound().setInteger("storedSouls", stack.getTagCompound().getInteger("storedSouls") - amount);
    }
}