Implemented Balduvian Warlord

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package mage.cards.b;
import java.util.Set;
import java.util.UUID;
import mage.MageInt;
import mage.abilities.Ability;
import mage.abilities.condition.common.IsStepCondition;
import mage.abilities.costs.common.TapSourceCost;
import mage.abilities.decorator.ConditionalActivatedAbility;
import mage.abilities.effects.Effect;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.RemoveFromCombatTargetEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.SubType;
import mage.constants.Outcome;
import mage.constants.PhaseStep;
import mage.constants.Zone;
import mage.filter.common.FilterAttackingCreature;
import mage.filter.common.FilterBlockingCreature;
import mage.game.Game;
import mage.game.combat.CombatGroup;
import mage.game.events.GameEvent;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.TargetPermanent;
import mage.target.common.TargetAttackingCreature;
import mage.watchers.common.BlockedByOnlyOneCreatureThisCombatWatcher;
/**
*
* @author L_J
*/
public class BalduvianWarlord extends CardImpl {
public BalduvianWarlord(UUID ownerId, CardSetInfo setInfo) {
super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{3}{R}");
this.subtype.add(SubType.HUMAN);
this.subtype.add(SubType.BARBARIAN);
this.power = new MageInt(3);
this.toughness = new MageInt(2);
// {T}: Remove target blocking creature from combat. Creatures it was blocking that hadn't become blocked by another creature this combat become unblocked, then it blocks an attacking creature of your choice. Activate this ability only during the declare blockers step.
Ability ability = new ConditionalActivatedAbility(Zone.BATTLEFIELD, new BalduvianWarlordUnblockEffect(), new TapSourceCost(), new IsStepCondition(PhaseStep.DECLARE_BLOCKERS, false));
ability.addTarget(new TargetPermanent(new FilterBlockingCreature()));
this.addAbility(ability, new BlockedByOnlyOneCreatureThisCombatWatcher());
}
public BalduvianWarlord(final BalduvianWarlord card) {
super(card);
}
@Override
public BalduvianWarlord copy() {
return new BalduvianWarlord(this);
}
}
class BalduvianWarlordUnblockEffect extends OneShotEffect {
public BalduvianWarlordUnblockEffect() {
super(Outcome.Benefit);
this.staticText = " Remove target blocking creature from combat. Creatures it was blocking that hadn't become blocked by another creature this combat become unblocked, then it blocks an attacking creature of your choice";
}
public BalduvianWarlordUnblockEffect(final BalduvianWarlordUnblockEffect effect) {
super(effect);
}
@Override
public BalduvianWarlordUnblockEffect copy() {
return new BalduvianWarlordUnblockEffect(this);
}
@Override
public boolean apply(Game game, Ability source) {
Player controller = game.getPlayer(source.getControllerId());
Permanent permanent = game.getPermanent(source.getTargets().getFirstTarget());
if (controller != null && permanent != null) {
// Remove target creature from combat
Effect effect = new RemoveFromCombatTargetEffect();
effect.apply(game, source);
// Make blocked creatures unblocked
BlockedByOnlyOneCreatureThisCombatWatcher watcher = (BlockedByOnlyOneCreatureThisCombatWatcher) game.getState().getWatchers().get(BlockedByOnlyOneCreatureThisCombatWatcher.class.getSimpleName());
if (watcher != null) {
Set<CombatGroup> combatGroups = watcher.getBlockedOnlyByCreature(permanent.getId());
if (combatGroups != null) {
for (CombatGroup combatGroup : combatGroups) {
if (combatGroup != null) {
combatGroup.setBlocked(false);
}
}
}
}
// Choose new creature to block
if (permanent.isCreature()) {
TargetAttackingCreature target = new TargetAttackingCreature(1, 1, new FilterAttackingCreature(), true);
if (target.canChoose(source.getSourceId(), controller.getId(), game)) {
while (!target.isChosen() && target.canChoose(controller.getId(), game) && controller.canRespond()) {
controller.chooseTarget(outcome, target, source, game);
}
} else {
return true;
}
Permanent chosenPermanent = game.getPermanent(target.getFirstTarget());
if (chosenPermanent != null && permanent != null && chosenPermanent.isCreature() && controller != null) {
CombatGroup chosenGroup = game.getCombat().findGroup(chosenPermanent.getId());
if (chosenGroup != null) {
// Relevant ruling for Balduvian Warlord:
// 7/15/2006 If an attacking creature has an ability that triggers When this creature becomes blocked,
// it triggers when a creature blocks it due to the Warlords ability only if it was unblocked at that point.
boolean notYetBlocked = true;
if (!chosenGroup.getBlockers().isEmpty()) {
notYetBlocked = false;
}
chosenGroup.addBlocker(permanent.getId(), controller.getId(), game);
if (notYetBlocked) {
game.fireEvent(GameEvent.getEvent(GameEvent.EventType.CREATURE_BLOCKED, chosenPermanent.getId(), null));
}
game.fireEvent(GameEvent.getEvent(GameEvent.EventType.BLOCKER_DECLARED, chosenPermanent.getId(), permanent.getId(), permanent.getControllerId()));
}
}
return true;
}
}
return false;
}
}