forked from External/mage
80e11b2052
* replaced blocking/blocked by predicates * added test for knight of dusk (currently fails) * added source parameter to filters and everything else that needs it * some changes to various predicates * test fix * small changes to filter code * merge fix * fixed a test failure * small change to Karn, Scion of Urza * removed sourceId from filter methods and other similar places * added new getobject method to fix some test failures * a few more fixes * fixed merge conflicts * merge fix
51 lines
2 KiB
Java
51 lines
2 KiB
Java
package mage.abilities.effects.common;
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import mage.abilities.Ability;
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import mage.abilities.SpellAbility;
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import mage.abilities.effects.common.cost.CostModificationEffectImpl;
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import mage.constants.CostModificationType;
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import mage.constants.Duration;
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import mage.constants.Outcome;
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import mage.filter.common.FilterControlledPermanent;
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import mage.game.Game;
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import mage.util.CardUtil;
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/**
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* 702.40. Affinity
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702.40a Affinity is a static ability that functions while the spell with affinity is on the stack.
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“Affinity for [text]” means “This spell costs you {1} less to cast for each [text] you control.”
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702.40b If a spell has multiple instances of affinity, each of them applies.
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*/
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public class AffinityEffect extends CostModificationEffectImpl {
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private final FilterControlledPermanent filter;
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public AffinityEffect(FilterControlledPermanent affinityFilter) {
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super(Duration.WhileOnStack, Outcome.Benefit, CostModificationType.REDUCE_COST);
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this.filter = affinityFilter;
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staticText = "Affinity for " + filter.getMessage();
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}
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public AffinityEffect(final AffinityEffect effect) {
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super(effect);
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this.filter = effect.filter.copy();
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}
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@Override
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public boolean apply(Game game, Ability source, Ability abilityToModify) {
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// abilityToModify.getControllerId() works with Sen Triplets and in multiplayer games, see https://github.com/magefree/mage/issues/5931
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int count = game.getBattlefield().getActivePermanents(filter, abilityToModify.getControllerId(), source, game).size();
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CardUtil.reduceCost(abilityToModify, count);
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return true;
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}
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@Override
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public boolean applies(Ability abilityToModify, Ability source, Game game) {
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return abilityToModify instanceof SpellAbility && abilityToModify.getSourceId().equals(source.getSourceId());
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}
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@Override
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public AffinityEffect copy() {
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return new AffinityEffect(this);
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}
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}
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