foul-magics/Mage/src/mage/abilities/effects/common/continuous/GainAbilitySourceEffect.java

/*
 *  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without modification, are
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 * 
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 *        conditions and the following disclaimer.
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 *     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.
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 *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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package mage.abilities.effects.common.continuous;

import mage.MageObjectReference;
import mage.abilities.Ability;
import mage.abilities.effects.ContinuousEffectImpl;
import mage.cards.Card;
import mage.constants.Duration;
import mage.constants.Layer;
import mage.constants.Outcome;
import mage.constants.SubLayer;
import mage.game.Game;
import mage.game.permanent.Permanent;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class GainAbilitySourceEffect extends ContinuousEffectImpl implements SourceEffect {

    protected Ability ability;
    // shall a card gain the ability (otherwise permanent)
    private boolean onCard;

    /**
     * Add ability with Duration.WhileOnBattlefield
     *
     * @param ability
     */
    public GainAbilitySourceEffect(Ability ability) {
        this(ability, Duration.WhileOnBattlefield);
    }

    public GainAbilitySourceEffect(Ability ability, Duration duration) {
        this(ability, duration, false);
    }

    public GainAbilitySourceEffect(Ability ability, Duration duration, boolean onCard) {
        super(duration, Layer.AbilityAddingRemovingEffects_6, SubLayer.NA, Outcome.AddAbility);
        this.ability = ability;
        staticText = "{this} gains " + ability.getRule() + " " + duration.toString();
        this.onCard = onCard;
    }

    public GainAbilitySourceEffect(Ability ability, Duration duration, boolean onCard, boolean noStaticText) {
        super(duration, Layer.AbilityAddingRemovingEffects_6, SubLayer.NA, Outcome.AddAbility);
        this.ability = ability;
        this.onCard = onCard;
        if (noStaticText) {
            staticText = null;
        }
    }

    public GainAbilitySourceEffect(final GainAbilitySourceEffect effect) {
        super(effect);
        this.ability = effect.ability.copy();
        ability.newId(); // This is needed if the effect is copied e.g. by a clone so the ability can be added multiple times to permanents
        this.onCard = effect.onCard;
    }

    @Override
    public GainAbilitySourceEffect copy() {
        return new GainAbilitySourceEffect(this);
    }
    
    @Override
    public void init(Ability source, Game game) {
        super.init(source, game);
        if (affectedObjectsSet) {
            affectedObjectList.add(new MageObjectReference(source.getSourceId(), game));
        }
    }

    @Override
    public boolean apply(Game game, Ability source) {
        if (onCard) {
            Card card;
            if (affectedObjectsSet) {
                card = affectedObjectList.get(0).getCard(game);
            } else {
                card = game.getCard(source.getSourceId());
            }
            if (card != null) {
                // add ability to card only once
                game.getState().addOtherAbility(card, ability);
                return true;
            }
        } else {
            Permanent permanent;
            if (affectedObjectsSet) {
                permanent = affectedObjectList.get(0).getPermanent(game);
            } else {
                permanent = game.getPermanent(source.getSourceId());
            }
            if (permanent != null) {
                permanent.addAbility(ability, source.getSourceId(), game, false);
                return true;
            }
        }
        if (duration.equals(Duration.Custom)) {
            this.discard();
        }
        return true;
    }
}