SoulshiftTrigger.java

package magic.model.trigger;

import magic.model.MagicCard;
import magic.model.MagicGame;
import magic.model.MagicLocationType;
import magic.model.MagicPermanent;
import magic.model.action.ShiftCardAction;
import magic.model.choice.MagicMayChoice;
import magic.model.choice.MagicTargetChoice;
import magic.model.event.MagicEvent;
import magic.model.target.MagicCMCCardFilter;
import magic.model.target.MagicGraveyardTargetPicker;
import magic.model.target.MagicTargetFilter;
import magic.model.target.MagicTargetFilterFactory;
import magic.model.target.MagicTargetHint;
import magic.model.target.Operator;

public class SoulshiftTrigger extends ThisDiesTrigger {

    private final int cmc;

    public SoulshiftTrigger(final int cmc) {
        this.cmc = cmc;
    }

    @Override
    public MagicEvent executeTrigger(final MagicGame game,final MagicPermanent permanent,final MagicPermanent died) {
        final MagicTargetFilter<MagicCard> targetFilter =
            new MagicCMCCardFilter(
                MagicTargetFilterFactory.SPIRIT_CARD_FROM_GRAVEYARD,
                Operator.LESS_THAN_OR_EQUAL,
                cmc
            );
        final MagicTargetChoice targetChoice =
            new MagicTargetChoice(
                targetFilter,
                MagicTargetHint.None,
                "target Spirit card from your graveyard"
            );
        return new MagicEvent(
            permanent,
            new MagicMayChoice(targetChoice),
            MagicGraveyardTargetPicker.ReturnToHand,
            this,
            "PN may$ return target Spirit card$ with " +
            "converted mana cost " + cmc + " or less " +
            "from his or her graveyard to his or her hand."
        );
    }
    @Override
    public void executeEvent(final MagicGame game, final MagicEvent event) {
        if (event.isYes()) {
            event.processTargetCard(game, (final MagicCard card) ->
                game.doAction(new ShiftCardAction(
                    card,
                    MagicLocationType.Graveyard,
                    MagicLocationType.OwnersHand
                ))
            );
        }
    }
}