edu.oregonstate.eecs.mcplan.domains.voyager.policies.FortifyPolicy.java Source code

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Here is the source code for edu.oregonstate.eecs.mcplan.domains.voyager.policies.FortifyPolicy.java

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/* LICENSE
Copyright (c) 2013-2016, Jesse Hostetler (jessehostetler@gmail.com)
All rights reserved.
    
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    
1. Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
    
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**
 * 
 */
package edu.oregonstate.eecs.mcplan.domains.voyager.policies;

import java.util.ArrayList;
import java.util.Arrays;

import org.apache.commons.lang3.builder.HashCodeBuilder;

import edu.oregonstate.eecs.mcplan.Policy;
import edu.oregonstate.eecs.mcplan.domains.voyager.LaunchAction;
import edu.oregonstate.eecs.mcplan.domains.voyager.NothingAction;
import edu.oregonstate.eecs.mcplan.domains.voyager.Planet;
import edu.oregonstate.eecs.mcplan.domains.voyager.Player;
import edu.oregonstate.eecs.mcplan.domains.voyager.SetProductionAction;
import edu.oregonstate.eecs.mcplan.domains.voyager.Unit;
import edu.oregonstate.eecs.mcplan.domains.voyager.Voyager;
import edu.oregonstate.eecs.mcplan.domains.voyager.VoyagerAction;
import edu.oregonstate.eecs.mcplan.domains.voyager.VoyagerState;
import edu.oregonstate.eecs.mcplan.util.Fn;

/**
 * @author jhostetler
 *
 */
public class FortifyPolicy extends Policy<VoyagerState, VoyagerAction> {
    private final Player player_;
    private final int[] planets_;
    private final int batch_;
    private final int garrison_;

    private VoyagerState s_ = null;
    private long t_ = 0L;

    public FortifyPolicy(final Player player, final int[] planets, final int batch, final int garrison) {
        player_ = player;
        planets_ = planets;
        batch_ = batch;
        garrison_ = garrison;
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder(859, 863).append(player_).append(planets_).append(batch_).append(garrison_)
                .toHashCode();
    }

    @Override
    public boolean equals(final Object obj) {
        if (obj == null || !(obj instanceof FortifyPolicy)) {
            return false;
        }
        final FortifyPolicy that = (FortifyPolicy) obj;
        return player_ == that.player_ && Arrays.equals(planets_, that.planets_) && batch_ == that.batch_
                && garrison_ == that.garrison_;
    }

    @Override
    public void setState(final VoyagerState s, final long t) {
        s_ = s;
        t_ = t;
    }

    @Override
    public VoyagerAction getAction() {
        final ArrayList<Planet> friendly = Voyager.playerPlanets(s_, player_);
        final ArrayList<Planet> srcs = new ArrayList<Planet>();
        final ArrayList<Planet> dests = new ArrayList<Planet>();
        for (final Planet p : friendly) {
            if (!Fn.contains(planets_, p.id)) {
                srcs.add(p);
            }
        }
        for (final Planet p : s_.planets) {
            if (Fn.contains(planets_, p.id)) {
                dests.add(p);
            }
        }
        for (final Planet src : srcs) {
            final int src_soldiers = src.population(Unit.Soldier);
            if (src_soldiers >= garrison_ + batch_) {
                int min_soldiers = Integer.MAX_VALUE;
                Planet dest = null;
                for (final Planet d : dests) {
                    final int dest_soldiers = Voyager.effectivePopulation(s_, d, player_)[Unit.Soldier.ordinal()];
                    if (dest_soldiers < min_soldiers) {
                        min_soldiers = dest_soldiers;
                        dest = d;
                    }
                }
                if (dest != null) {
                    return new LaunchAction(src, dest, new int[] { 0, src_soldiers - garrison_ });
                }
            }
        }
        // Nobody has spare soldiers; ensure soldiers are being produced
        int producing_soldiers = 0;
        for (final Planet q : friendly) {
            if (q.nextProduced() == Unit.Soldier) {
                producing_soldiers += 1;
            }
        }
        if (producing_soldiers == 0) {
            for (final Planet q : friendly) {
                if (q.nextProduced() != Unit.Soldier && q.population(Unit.Worker) > 0) {
                    return new SetProductionAction(q, Unit.Soldier);
                }
            }
        } else {
            for (final Planet p : friendly) {
                if (p.nextProduced() != Unit.Soldier && p.population(Unit.Worker) >= p.capacity) {
                    return new SetProductionAction(p, Unit.Soldier);
                }
            }
        }
        return new NothingAction();
    }

    @Override
    public void actionResult(final VoyagerState sprime, final double[] r) {
        // TODO Auto-generated method stub

    }

    @Override
    public String getName() {
        return "FortifyPolicy";
    }

}