CapitalValuator.java

/*  Copyright (C) 2010 - 2011  Fabian Neundorf, Philip Caroli,
 *  Maximilian Madlung,	Usman Ghani Ahmed, Jeremias Mechler
 *
 *  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 org.ojim.client.ai.valuation;

import java.util.logging.Level;

import org.ojim.client.ai.commands.SellCommand;
import org.ojim.logic.state.Player;
import org.ojim.logic.state.fields.BuyableField;
import org.ojim.logic.state.fields.Field;

/**
 * 
 * Die Klasse CapitalValuator bewertet, ob sich der KI-Client leisten kann, Geld auszugeben
 * 
 * @author Jeremias Mechler
 */
public final class CapitalValuator extends ValuationFunction {

	/**
	 * Default constructor
	 */
	protected CapitalValuator() {
	}

	private static boolean hackDisable = true;

	/**
	 * This is a singleton object!
	 * 
	 * @return An instance
	 */
	public static CapitalValuator getInstance() {
		return ValuationFunction.getInstance(false, CapitalValuator.class);
	}

	/**
	 * Sometimes we have to specify an amount, for example if we want to buy something
	 * 
	 * @param amount
	 *            Amount of money
	 * @return Valuation 0 if granted, -1 if denied
	 */
	@Override
	public double returnValuation(int playerID, int amount) {

		// Da die Klasse ein Singleton ist, muss der aktive Spieler bei jedem
		// Aufruf bestimmt werden
		getLogger();
//		OJIMLogger.changeLogLevel(logger, Level.FINE);
		Player currentPlayer = this.getGameState().getPlayerById(playerID);
		logger.log(Level.FINE, "Current cash = " + currentPlayer.getBalance() + " Price = " + amount);
		// Die Gesamtgeldsumme aller Gegenspieler
		int sum = 0;
		// Der Geldbetrag des Spielers mit dem meisten Geld
		int max = 0;
		int count = 0;
		Player[] players = this.getGameState().getPlayers();
		for (Player player : players) {
			if (player == currentPlayer) {
				continue;
			}
			sum += player.getBalance();
			count++;
			if (player.getBalance() > max) {
				max = player.getBalance();
			}
		}
		assert(server != null);
		double required = parameters.getBaseCash() + max * parameters.getMaxCashPercentage() + parameters.getAverageCashPercentage() * (sum / count) + 0.05 * (40 - server.getNumberOfHousesLeft());


		// Nach dem Papier
//		double required = ValuationParameters.baseCash
//		 + ValuationParameters.averageCashPercentage
//		 * (((double) sum / (double) (players.length - 1)) + sum)
//				+ ValuationParameters.maxCashPercentage * max;
		logger.log(Level.FINE, "Required = " + required);

		if (currentPlayer.getBalance() - amount >= required) {
			logger.log(Level.FINE, "Granted");
			return 0;
		} else {
			logger.log(Level.FINE, "Denied");
			// HACK: Sell!
			if (!hackDisable) {
				if (currentPlayer.getBalance() < 1000) {
					int field = -1;
					for (int i = 0; i < 40; i++) {
						if (field == -1) {
							Field bla = getGameState().getFieldAt(i);
							if (bla instanceof BuyableField) {
								if (((BuyableField) bla).getOwner().getId() == currentPlayer.getId()) {
									field = i;
								}
							}
						}
					}
					if (field != -1) {
						// assert (false);
						new SellCommand(getLogic(), getServer(), getGameState().getActivePlayer().getId(), field, 2, 1)
								.execute();
						hackDisable = true;
					}
				}
			}
			return -1;

		}
	}
}