/**
 * Copyright (c) 2011-2015, SpaceToad and the BuildCraft Team
 * http://www.mod-buildcraft.com
 * <p/>
 * BuildCraft is distributed under the terms of the Minecraft Mod Public
 * License 1.0, or MMPL. Please check the contents of the license located in
 * http://www.mod-buildcraft.com/MMPL-1.0.txt
 */
package buildcraft.builders.schematics;

import net.minecraft.item.ItemStack;
import net.minecraft.nbt.NBTTagCompound;

import buildcraft.api.blueprints.IBuilderContext;
import buildcraft.api.blueprints.MappingRegistry;
import buildcraft.api.blueprints.SchematicBlock;

public class SchematicMetadataMask extends SchematicBlock {
	private final int mask;

	public SchematicMetadataMask(int mask) {
		this.mask = mask;
	}

	@Override
	public void initializeFromObjectAt(IBuilderContext context, int x, int y, int z) {
		super.initializeFromObjectAt(context, x, y, z);
		meta &= mask;
	}

	@Override
	public void readSchematicFromNBT(NBTTagCompound nbt, MappingRegistry registry) {
		super.readSchematicFromNBT(nbt, registry);
		meta &= mask;
	}

	@Override
	public void storeRequirements(IBuilderContext context, int x, int y, int z) {
		if (block != null) {
			storedRequirements = new ItemStack[1];
			storedRequirements[0] = new ItemStack(block, 1, meta & mask);
		}
	}

	@Override
	public boolean isAlreadyBuilt(IBuilderContext context, int x, int y, int z) {
		return block == context.world().getBlock(x, y, z) && (meta & mask) == (context.world().getBlockMetadata(x, y, z) & mask);
	}
}