HornOfPlenty.java example

Explorer
mage-master
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package mage.cards.h;

import java.util.UUID;
import mage.abilities.Ability;
import mage.abilities.common.SpellCastAllTriggeredAbility;
import mage.abilities.common.delayed.AtTheBeginOfNextEndStepDelayedTriggeredAbility;
import mage.abilities.costs.Cost;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.abilities.effects.Effect;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.CreateDelayedTriggeredAbilityEffect;
import mage.abilities.effects.common.DrawCardTargetEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.TargetController;
import mage.filter.FilterSpell;
import mage.game.Game;
import mage.players.Player;
import mage.target.targetpointer.FixedTarget;
import mage.constants.SetTargetPointer;

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

    public HornOfPlenty(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.ARTIFACT},"{6}");

        // Whenever a player casts a spell, he or she may pay {1}. If that player does, he or she draws a card at the beginning of the next end step.
        this.addAbility(new SpellCastAllTriggeredAbility(new HornOfPlentyEffect(), new FilterSpell("a spell"), false, SetTargetPointer.PLAYER));
    }

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

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

class HornOfPlentyEffect extends OneShotEffect {

    public HornOfPlentyEffect() {
        super(Outcome.Detriment);
        this.staticText = "he or she may pay {1}. If that player does, he or she draws a card at the beginning of the next end step";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player caster = game.getPlayer(targetPointer.getFirst(game, source));
        if (caster != null) {
            if (caster.chooseUse(Outcome.DrawCard, "Pay {1} to draw a card at the beginning of the next end step?", source, game)) {
                Cost cost = new ManaCostsImpl("{1}");
                if (cost.pay(source, game, source.getSourceId(), caster.getId(), false, null)) {
                    Effect effect = new DrawCardTargetEffect(1);
                    effect.setTargetPointer(new FixedTarget(caster.getId()));
                    return new CreateDelayedTriggeredAbilityEffect(new AtTheBeginOfNextEndStepDelayedTriggeredAbility(effect, TargetController.ANY)).apply(game, source);
                }
            }
            return true;
        }
        return false;
    }
}