/*
* Copyright 2011 BetaSteward_at_googlemail.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 BetaSteward_at_googlemail.com ``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 BetaSteward_at_googlemail.com OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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*/
package mage.abilities.effects.common.combat;
import java.util.UUID;
import mage.constants.Duration;
import mage.abilities.Ability;
import mage.abilities.effects.RequirementEffect;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.watchers.common.BlockedAttackerWatcher;
/**
*
* @author BetaSteward_at_googlemail.com
*/
public class MustBeBlockedByTargetSourceEffect extends RequirementEffect {
public MustBeBlockedByTargetSourceEffect() {
this(Duration.EndOfTurn);
}
public MustBeBlockedByTargetSourceEffect(Duration duration) {
super(duration);
staticText = "Target creature blocks {this} this turn if able";
}
public MustBeBlockedByTargetSourceEffect(final MustBeBlockedByTargetSourceEffect effect) {
super(effect);
}
@Override
public boolean applies(Permanent permanent, Ability source, Game game) {
if (permanent.getId().equals(source.getFirstTarget())) {
Permanent blocker = game.getPermanent(source.getFirstTarget());
if (blocker != null && blocker.canBlock(source.getSourceId(), game)) {
Permanent attacker = game.getPermanent(source.getSourceId());
if (attacker != null) {
BlockedAttackerWatcher blockedAttackerWatcher = (BlockedAttackerWatcher) game.getState().getWatchers().get("BlockedAttackerWatcher");
if (blockedAttackerWatcher != null && blockedAttackerWatcher.creatureHasBlockedAttacker(attacker, blocker)) {
// has already blocked this turn, so no need to do again
return false;
}
return true;
}
}
}
return false;
}
@Override
public boolean mustAttack(Game game) {
return false;
}
@Override
public boolean mustBlock(Game game) {
return true;
}
@Override
public UUID mustBlockAttacker(Ability source, Game game) {
return source.getSourceId();
}
@Override
public MustBeBlockedByTargetSourceEffect copy() {
return new MustBeBlockedByTargetSourceEffect(this);
}
}