MarketBuilding.java

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 * Copyright (c) 2016
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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package jsettlers.logic.buildings.trading;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import jsettlers.common.buildings.EBuildingType;
import jsettlers.common.material.EMaterialType;
import jsettlers.common.material.EPriority;
import jsettlers.common.position.ShortPoint2D;
import jsettlers.common.utils.collections.IPredicate;
import jsettlers.common.utils.collections.IteratorFilter;
import jsettlers.logic.buildings.IBuildingsGrid;
import jsettlers.logic.buildings.stack.IRequestStack;
import jsettlers.logic.movable.strategies.trading.IDonkeyMarket;
import jsettlers.logic.player.Player;

/**
 * 
 * @author Andreas Eberle
 *
 */
public class MarketBuilding extends TradingBuilding implements IDonkeyMarket {
	private static final long serialVersionUID = 4979115926871683024L;

	private static final List<MarketBuilding> ALL_MARKETS = new ArrayList<MarketBuilding>();

	public static Iterable<MarketBuilding> getAllMarkets(final Player player) {
		return new IteratorFilter<>(ALL_MARKETS, new IPredicate<MarketBuilding>() {
			@Override
			public boolean evaluate(MarketBuilding building) {
				return building.getPlayer() == player;
			}
		});
	}

	public static void clearState() {
		ALL_MARKETS.clear();
	}

	public MarketBuilding(EBuildingType type, Player player, ShortPoint2D position, IBuildingsGrid buildingsGrid) {
		super(type, player, position, buildingsGrid, false);
		ALL_MARKETS.add(this);
	}

	private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
		ois.defaultReadObject();
		ALL_MARKETS.add(this);
	}

	@Override
	protected void killedEvent() {
		super.killedEvent();
		ALL_MARKETS.remove(this);
	}

	@Override
	public boolean needsDonkey() {
		return isTargetSet() && getPriority() != EPriority.STOPPED && super.getStackWithMaterial() != null;
	}

	@Override
	public EMaterialType tryToTakeDonkeyMaterial() {
		if (!isTargetSet() || getPriority() == EPriority.STOPPED) { // if no target is set, or work is stopped don't give materials
			return null;
		}

		IRequestStack stack = super.getStackWithMaterial();

		if (stack != null) {
			EMaterialType materialType = stack.getMaterialType(); // get this before pop, as pop may reset the currentType of the stack
			if (stack.pop()) {
				return materialType;
			}
		}

		return null;
	}

	@Override
	public Iterator<ShortPoint2D> getWaypointsIterator() {
		return new WaypointsIterator(getWaypoints());
	}

	private static class WaypointsIterator implements Iterator<ShortPoint2D>, Serializable {
		private static final long serialVersionUID = 5229610228646171358L;

		private final ShortPoint2D[] waypoints;
		private int i = 0;

		WaypointsIterator(ShortPoint2D[] waypoints) {
			this.waypoints = waypoints;
			hasNext();
		}

		@Override
		public boolean hasNext() {
			for (; i < waypoints.length && waypoints[i] == null; i++)
				;
			return i < waypoints.length;
		}

		@Override
		public ShortPoint2D next() {
			return hasNext() ? waypoints[i++] : null;
		}

		@Override
		public void remove() {
			throw new UnsupportedOperationException();
		}
	}
}