IRecipe class

package com.fluffy.amnesia.handler;

import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.world.World;

import com.fluffy.amnesia.Amnesia;
import com.fluffy.amnesia.items.ItemLanternoff;

public class LanternRefuelRecipe implements IRecipe
{

	public boolean matches(InventoryCrafting inv, World w)
	{
		int numoil = 0;
		int numlanterns = 0;
		int lanternslot = -1;
		boolean containsforeignobject = false;

		for (int item = 0; item < inv.getSizeInventory(); ++item)
		{
			ItemStack oildif = inv.getStackInSlot(item);

			if (oildif != null)
			{
				if (oildif.getItem() != Amnesia.lanternoffItem)
				{
					if (oildif.getItem() != Amnesia.lanternoil)
					{
						containsforeignobject = true;
					}
					else
					{
						++numoil;
					}
				}
				else
				{
					++numlanterns;
					lanternslot = item;
				}
			}
		}

		if (numlanterns == 1 && lanternslot >= 0 && numoil > 0 && !containsforeignobject)
		{
			ItemStack var9 = inv.getStackInSlot(lanternslot);
			int var10 = Amnesia.lanternFuelCapacity * 60 - ItemLanternoff.getOilLevel(var9);

			if (numoil * Amnesia.fuelMinutesPerBottle * 60 <= var10)
			{
				return true;
			}

			if ((numoil - 1) * Amnesia.fuelMinutesPerBottle * 60 < var10)
			{
				return true;
			}
		}

		return false;
	}

	public ItemStack getCraftingResult(InventoryCrafting inv)
	{
		int numoil = 0;
		int lampslot = -1;
		boolean type = true;

		for (int item = 0; item < inv.getSizeInventory(); ++item)
		{
			ItemStack newLevel = inv.getStackInSlot(item);

			if (newLevel != null)
			{
				if (newLevel.getItem() == Amnesia.lanternoffItem)
				{
					lampslot = item;
					type = false;
				}
				else if (newLevel.getItem() == Amnesia.lanternoil)
				{
					++numoil;
				}
			}
		}

		if (lampslot >= 0)
		{
			ItemStack var8 = inv.getStackInSlot(lampslot);
			int var9 = ItemLanternoff.getOilLevel(var8) + Amnesia.fuelMinutesPerBottle * 60 * numoil;

			if (var9 > Amnesia.lanternFuelCapacity * 60)
			{
				var9 = Amnesia.lanternFuelCapacity * 60;
			}

			ItemStack out = null;

			if (!type)
			{
				out = new ItemStack(Amnesia.lanternoffItem, 1);
			}

			ItemLanternoff.setOilLevel(out, var9);
			return out;
		}
		else
		{
			return null;
		}
	}

	public int getRecipeSize()
	{
		return 2;
	}

	public ItemStack getRecipeOutput()
	{
		return new ItemStack(Amnesia.lanternoffItem, 1);
	}
}