Examples of mage.abilities.effects.RequirementEffect

mage.abilities.effects.RequirementEffect
@author BetaSteward_at_googlemail.com

        //20101001 - 508.1d
        for (Permanent creature : player.getAvailableAttackers(game)) {
            boolean mustAttack = false;
            Set<UUID> defendersForcedToAttack = new HashSet<>();
            for (Map.Entry<RequirementEffect, HashSet<Ability>> entry : game.getContinuousEffects().getApplicableRequirementEffects(creature, game).entrySet()) {
                RequirementEffect effect = entry.getKey();
                if (effect.mustAttack(game)) {
                    mustAttack = true;
                    for (Ability ability : entry.getValue()) {
                        UUID defenderId = effect.mustAttackDefender(ability, game);
                        if (defenderId != null) {
                            defendersForcedToAttack.add(defenderId);
                        }
                        break;
                    }

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                // Creature is already blocking but not forced to do so
                if (creature.getBlocking() > 0) {
                    // get all requirement effects that apply to the creature (e.g. is able to block attacker)
                    for (Map.Entry<RequirementEffect, HashSet<Ability>> entry : game.getContinuousEffects().getApplicableRequirementEffects(creature, game).entrySet()) {
                        RequirementEffect effect = entry.getKey();
                        // get possible mustBeBlockedByAtLeastOne blocker
                        for (Ability ability : entry.getValue()) {
                            UUID toBeBlockedCreature = effect.mustBlockAttackerIfElseUnblocked(ability, game);
                            if (toBeBlockedCreature != null) {
                                Set<UUID> potentialBlockers;
                                if (mustBeBlockedByAtLeastOne.containsKey(toBeBlockedCreature)) {
                                    potentialBlockers = mustBeBlockedByAtLeastOne.get(toBeBlockedCreature);
                                } else {
                                    potentialBlockers = new HashSet<>();
                                    mustBeBlockedByAtLeastOne.put(toBeBlockedCreature, potentialBlockers);
                                }
                                potentialBlockers.add(creature.getId());
                            }
                        }
                    }
                }


                // Creature is not blocking yet
                if (creature.getBlocking() == 0) {
                    // get all requirement effects that apply to the creature
                    for (Map.Entry<RequirementEffect, HashSet<Ability>> entry : game.getContinuousEffects().getApplicableRequirementEffects(creature, game).entrySet()) {
                        RequirementEffect effect = entry.getKey();
                        // get possible mustBeBlockedByAtLeastOne blocker
                        for (Ability ability : entry.getValue()) {
                            UUID toBeBlockedCreature = effect.mustBlockAttackerIfElseUnblocked(ability, game);
                            if (toBeBlockedCreature != null) {
                                Set<UUID> potentialBlockers;
                                if (mustBeBlockedByAtLeastOne.containsKey(toBeBlockedCreature)) {
                                    potentialBlockers = mustBeBlockedByAtLeastOne.get(toBeBlockedCreature);
                                } else {
                                    potentialBlockers = new HashSet<>();
                                    mustBeBlockedByAtLeastOne.put(toBeBlockedCreature, potentialBlockers);
                                }
                                potentialBlockers.add(creature.getId());
                            }
                        }


                        // check the mustBlockAny requirement ----------------------------------------
                        if (effect.mustBlockAny(game)) {
                            // check that it can block at least one of the attackers
                            // and no restictions prevent this
                            boolean mayBlock = false;
                            for (UUID attackingCreatureId : getAttackers()) {
                                if (creature.canBlock(attackingCreatureId, game)) {

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        }
    }


    private void removeAttackerIfPossible(Game game, Permanent attacker) {
        for (Map.Entry entry : game.getContinuousEffects().getApplicableRequirementEffects(attacker, game).entrySet()) {
            RequirementEffect effect = (RequirementEffect)entry.getKey();
            if (effect.mustAttack(game)) {
                if (game.getCombat().getMaxAttackers() >= game.getCombat().getCreaturesForcedToAttack().size() && game.getCombat().getDefenders().size() == 1) {
                    return; // we can't change creatures forced to attack if only one possible defender exists and all forced creatures can attack
                }
            }
        }

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Related Classes of mage.abilities.effects.RequirementEffect

mage.game.combat.Combat

mage.player.human.HumanPlayer

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