OutputPipePart.java

/*
 * CraftBook Copyright (C) 2010-2017 sk89q <http://www.sk89q.com>
 * CraftBook Copyright (C) 2011-2017 me4502 <http://www.me4502.com>
 * CraftBook Copyright (C) Contributors
 *
 * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program. If not,
 * see <http://www.gnu.org/licenses/>.
 */
package com.sk89q.craftbook.sponge.mechanics.pipe.parts;

import org.spongepowered.api.block.BlockState;
import org.spongepowered.api.block.BlockTypes;
import org.spongepowered.api.data.key.Keys;
import org.spongepowered.api.item.inventory.ItemStack;
import org.spongepowered.api.util.Direction;
import org.spongepowered.api.world.Location;
import org.spongepowered.api.world.World;

import java.util.ArrayList;
import java.util.List;

public class OutputPipePart implements PipePart {

    @Override
    public boolean isValid(BlockState blockState) {
        return blockState.getType() == BlockTypes.PISTON;
    }

    @Override
    public List<Location<World>> findValidOutputs(Location<World> location, ItemStack itemStack, Direction inputSide) {

        List<Location<World>> locations = new ArrayList<>();

        //The only location an output can pass to is the one it points at.
        locations.add(location.getRelative(location.get(Keys.DIRECTION).orElse(null)));

        return locations;
    }
}