foul-magics/Mage.Sets/src/mage/cards/b/Bioshift.java

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package mage.cards.b;

import java.util.UUID;
import mage.MageItem;

import mage.constants.CardType;
import mage.abilities.Ability;
import mage.abilities.effects.OneShotEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.Outcome;
import mage.counters.CounterType;
import mage.filter.common.FilterCreaturePermanent;
import mage.filter.predicate.ObjectSourcePlayer;
import mage.filter.predicate.ObjectSourcePlayerPredicate;
import mage.filter.predicate.mageobject.AnotherTargetPredicate;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.game.stack.StackObject;
import mage.players.Player;
import mage.target.common.TargetCreaturePermanent;

/**
 *
 * @author LevelX2
 */
public class Bioshift extends CardImpl {

    public Bioshift(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.INSTANT},"{G/U}");

        // Move any number of +1/+1 counters from target creature onto another target creature with the same controller.
        getSpellAbility().addEffect(new MoveCounterFromTargetToTargetEffect());
        
        TargetCreaturePermanent target = new TargetCreaturePermanent(
                new FilterCreaturePermanent("creature (you take counters from)"));
        target.setTargetTag(1);
        this.getSpellAbility().addTarget(target);
        
        FilterCreaturePermanent filter = new FilterCreaturePermanent(
                "another target creature with the same controller (counters go to)");
        filter.add(new AnotherTargetPredicate(2));
        filter.add(new SameControllerPredicate());
        TargetCreaturePermanent target2 = new TargetCreaturePermanent(filter);
        target2.setTargetTag(2);
        this.getSpellAbility().addTarget(target2);
    }
    

    public Bioshift(final Bioshift card) {
        super(card);
    }

    @Override
    public Bioshift copy() {
        return new Bioshift(this);
    }
}

class MoveCounterFromTargetToTargetEffect extends OneShotEffect {

    public MoveCounterFromTargetToTargetEffect() {
        super(Outcome.Detriment);
        this.staticText = "Move any number of +1/+1 counters from target creature onto another target creature with the same controller";
    }

    public MoveCounterFromTargetToTargetEffect(final MoveCounterFromTargetToTargetEffect effect) {
        super(effect);
    }

    @Override
    public MoveCounterFromTargetToTargetEffect copy() {
        return new MoveCounterFromTargetToTargetEffect(this);
    }

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        if (controller != null) {
            Permanent fromPermanent = game.getPermanent(getTargetPointer().getFirst(game, source));
            Permanent toPermanent = null;
            if (source.getTargets().size() > 1) {
                toPermanent = game.getPermanent(source.getTargets().get(1).getFirstTarget());
            }
            if (fromPermanent == null || toPermanent == null || !fromPermanent.getControllerId().equals(toPermanent.getControllerId())) {
                return false;
            }
            int amountCounters = fromPermanent.getCounters(game).getCount(CounterType.P1P1);
            if (amountCounters > 0) {
                int amountToMove = controller.getAmount(0, amountCounters, "How many counters do you want to move?", game);
                if (amountToMove > 0) {
                    fromPermanent.removeCounters(CounterType.P1P1.createInstance(amountToMove), game);
                    toPermanent.addCounters(CounterType.P1P1.createInstance(amountToMove), source, game);
                }
            }
            return true;
        }
        return false;

    }
}

class SameControllerPredicate implements ObjectSourcePlayerPredicate<ObjectSourcePlayer<MageItem>> {

    @Override
    public boolean apply(ObjectSourcePlayer<MageItem> input, Game game) {
        StackObject source = game.getStack().getStackObject(input.getSourceId());
        if (source != null) {
            if (source.getStackAbility().getTargets().isEmpty()
                || source.getStackAbility().getTargets().get(0).getTargets().isEmpty()) {
                return true;
            }
            Permanent firstTarget = game.getPermanent(
                    source.getStackAbility().getTargets().get(0).getTargets().get(0));
            Permanent inputPermanent = game.getPermanent(input.getObject().getId());
            if (firstTarget != null && inputPermanent != null) {
                return firstTarget.getControllerId().equals(inputPermanent.getControllerId());
            }
        }
        return true;
    }

    @Override
    public String toString() {
        return "Target with the same controller";
    }
    
}