forked from External/mage
115 lines
4.4 KiB
Java
115 lines
4.4 KiB
Java
/*
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* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are those of the
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* authors and should not be interpreted as representing official policies, either expressed
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* or implied, of BetaSteward_at_googlemail.com.
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*/
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package mage.abilities.effects;
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import mage.constants.Duration;
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import mage.constants.EffectType;
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import mage.constants.Outcome;
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import mage.abilities.Ability;
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import mage.game.Game;
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import mage.game.events.DamageEvent;
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import mage.game.events.GameEvent;
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/**
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*
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* @author BetaSteward_at_googlemail.com
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*/
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public abstract class PreventionEffectImpl extends ReplacementEffectImpl implements PreventionEffect {
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protected int amountToPrevent;
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protected final boolean onlyCombat;
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protected boolean consumable;
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public PreventionEffectImpl(Duration duration) {
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this(duration, Integer.MAX_VALUE, false);
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}
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public PreventionEffectImpl(Duration duration, int amountToPrevent, boolean onlyCombat) {
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this(duration, amountToPrevent, onlyCombat, true);
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}
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public PreventionEffectImpl(Duration duration, int amountToPrevent, boolean onlyCombat, boolean consumable) {
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super(duration, Outcome.PreventDamage);
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this.effectType = EffectType.PREVENTION;
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this.amountToPrevent = amountToPrevent;
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this.onlyCombat = onlyCombat;
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this.consumable = consumable;
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}
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public PreventionEffectImpl(final PreventionEffectImpl effect) {
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super(effect);
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this.amountToPrevent = effect.amountToPrevent;
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this.onlyCombat = effect.onlyCombat;
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this.consumable = effect.consumable;
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}
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@Override
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public boolean apply(Game game, Ability source) {
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// not used for prevention effect
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return true;
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}
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protected PreventionEffectData preventDamageAction(GameEvent event, Ability source, Game game) {
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PreventionEffectData preventionData = game.preventDamage(event, source, game, amountToPrevent);
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if (!preventionData.isError() && !preventionData.isReplaced()) {
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if (consumable) {
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amountToPrevent = preventionData.getRemainingAmount();
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}
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if (amountToPrevent == 0) {
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this.discard();
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}
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}
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return preventionData;
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}
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@Override
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public boolean replaceEvent(GameEvent event, Ability source, Game game) {
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preventDamageAction(event, source, game);
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// damage amount is reduced or set to 0 so complete replacement of damage event is never neccessary
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return false;
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}
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@Override
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public boolean checksEventType(GameEvent event, Game game) {
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switch (event.getType()) {
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case DAMAGE_CREATURE:
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case DAMAGE_PLAYER:
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case DAMAGE_PLANESWALKER:
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return true;
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}
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return false;
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}
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@Override
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public boolean applies(GameEvent event, Ability source, Game game) {
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return event.getFlag() && (!onlyCombat || ((DamageEvent)event).isCombatDamage());
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}
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}
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