Applied-Energistics-2-tilera-Edition/src/main/java/appeng/recipes/game/FacadeRecipe.java

/*
 * This file is part of Applied Energistics 2.
 * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
 *
 * Applied Energistics 2 is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Applied Energistics 2 is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
 */

package appeng.recipes.game;

import net.minecraft.inventory.InventoryCrafting;
import net.minecraft.item.ItemStack;
import net.minecraft.item.crafting.IRecipe;
import net.minecraft.world.World;
import appeng.api.AEApi;
import appeng.api.util.AEItemDefinition;
import appeng.items.parts.ItemFacade;

public class FacadeRecipe implements IRecipe
{

	private final AEItemDefinition anchor = AEApi.instance().parts().partCableAnchor;
	private final ItemFacade facade = (ItemFacade) AEApi.instance().items().itemFacade.item();

	private ItemStack getOutput(InventoryCrafting inv, boolean createFacade)
	{
		if ( inv.getStackInSlot( 0 ) == null && inv.getStackInSlot( 2 ) == null && inv.getStackInSlot( 6 ) == null && inv.getStackInSlot( 8 ) == null )
		{
			if ( anchor.sameAsStack( inv.getStackInSlot( 1 ) ) && anchor.sameAsStack( inv.getStackInSlot( 3 ) ) && anchor.sameAsStack( inv.getStackInSlot( 5 ) )
					&& anchor.sameAsStack( inv.getStackInSlot( 7 ) ) )
			{
				ItemStack facades = facade.createFacadeForItem( inv.getStackInSlot( 4 ), !createFacade );
				if ( facades != null && createFacade )
					facades.stackSize = 4;
				return facades;
			}
		}
		return null;
	}

	@Override
	public boolean matches(InventoryCrafting inv, World w)
	{
		return getOutput( inv, false ) != null;
	}

	@Override
	public ItemStack getCraftingResult(InventoryCrafting inv)
	{
		return getOutput( inv, true );
	}

	@Override
	public int getRecipeSize()
	{
		return 9;
	}

	@Override
	public ItemStack getRecipeOutput() // no default output..
	{
		return null;
	}

}