/*
 * PercentMove.java
 *
 * Created on January 6, 2007, 4:47 PM
 *
 * This file is a part of Shoddy Battle.
 * Copyright (C) 2006  Colin Fitzpatrick
 *
 * 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 2
 * 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, visit the Free Software Foundation, Inc.
 * online at http://gnu.org.
 */

package org.pokenet.server.battle.mechanics.statuses;
import org.pokenet.server.battle.Pokemon;
import org.pokenet.server.battle.mechanics.moves.MoveList.HealBlockEffect;

/**
 * This class represents an effect that heals or does damage
 * based on a percentage. It can also represent statuses that
 * do damage each turn.
 * @author Ben
 */
public class PercentEffect extends StatusEffect {
    
    private double m_percent;
    private boolean m_staysOnSwitch; //true if the effects remains upon switching out
    private int m_tier; //a tier other than -1 indicates that the move is a tick effect
    private String m_description; //extra description applied when an effect or tick is applied
    
    /** Creates a new instance of PercentEffect */
    public PercentEffect(double percent, boolean staysOnSwitch, int tier,
            String description) {
        m_percent = percent;
        m_staysOnSwitch = staysOnSwitch;
        m_tier = tier;
        m_description = description;
    }
    
    public String getName() {
        return "Percent effect";
    }
    
    public boolean switchOut(Pokemon p) {
        return !m_staysOnSwitch;
    }
    
    /**
     * Change the percent that this move heals/hurts.
     * @author Colin
     */
    public void setPercent(double percent) {
        m_percent = percent;
    }
    
    public double getPercent() {
        return m_percent;
    }
    
    protected int calculateChange(Pokemon poke, double percent) {
        double maximum = (double)poke.getStat(Pokemon.S_HP);
        double change = maximum * m_percent;
        int floor = (int)change;
        return floor;
    }
    
    public boolean tick(Pokemon p) {
        if (p.hasEffect(HealBlockEffect.class)) {
            return false;
        }
        p.getField().showMessage(p.getName() + m_description);
        p.changeHealth(calculateChange(p, m_percent), true);
        return false;
    }
    
    public int getTier() {
        return m_tier;
    }
    
    public boolean apply(Pokemon p) {
        if (m_tier != -1) return true;
        if (p.hasEffect(HealBlockEffect.class)) {
            return false;
        }
        if (m_description != null) {
            p.getField().showMessage(m_description);
        }
        p.changeHealth(calculateChange(p, m_percent), true);
        return false;
    }
    
    public boolean isSingleton() {
        return false;
    }
    
    public void unapply(Pokemon p) {
    }
    
    public String getDescription() {
        return null;
    }
    
    public boolean immobilises(Pokemon poke) {
        return false;
    }
}