Package mage.abilities.effects.common

Source Code of mage.abilities.effects.common.SkipNextUntapTargetEffect

/*
* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
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*
*    2. Redistributions in binary form must reproduce the above copyright notice, this list
*       of conditions and the following disclaimer in the documentation and/or other materials
*       provided with the distribution.
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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package mage.abilities.effects.common;

import java.util.UUID;
import mage.MageObject;
import mage.abilities.Ability;
import mage.abilities.Mode;
import mage.abilities.effects.ContinuousRuleModifiyingEffectImpl;
import mage.constants.Duration;
import mage.constants.Outcome;
import mage.constants.PhaseStep;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.game.permanent.Permanent;

/**
* @author BetaSteward_at_googlemail.com
*/
public class SkipNextUntapTargetEffect extends ContinuousRuleModifiyingEffectImpl {

    private int validForTurnNum;

    /**
     * Attention: This effect won't work with targets controlled by different controllers
     * If this is needed, the validForTurnNum has to be saved per controller.
     *
     */
    public SkipNextUntapTargetEffect() {
        super(Duration.Custom, Outcome.Detriment, false, true);
    }

    public SkipNextUntapTargetEffect(String text) {
        this();
        this.staticText = text;
    }

    public SkipNextUntapTargetEffect(final SkipNextUntapTargetEffect effect) {
        super(effect);
        this.validForTurnNum = effect.validForTurnNum;
    }

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

    @Override
    public boolean apply(Game game, Ability source) {
        return false;
    }

    @Override
    public String getInfoMessage(Ability source, GameEvent event, Game game) {
        MageObject mageObject = game.getObject(source.getSourceId());
        Permanent permanentToUntap = game.getPermanent((event.getTargetId()));
        if (permanentToUntap != null && mageObject != null) {
            return permanentToUntap.getLogName() + " doesn't untap (" + mageObject.getLogName() + ")";
        }
        return null;
    }
   
    @Override
    public boolean applies(GameEvent event, Ability source, Game game) {
        // the check for turn number is needed if multiple effects are added to prevent untap in next untap step of controller
        // if we don't check for turn number, every untap step of a turn only one effect would be used instead of correctly only one time
        // to skip the untap effect.
       
        // Discard effect if related to previous turn
        if (validForTurnNum > 0 && validForTurnNum < game.getTurnNum()) {
            discard();
            return false;
        }
        // remember the turn of the untap step the effect has to be applied
        if (GameEvent.EventType.UNTAP_STEP.equals(event.getType())) {           
            UUID controllerId = null;
            for(UUID targetId : getTargetPointer().getTargets(game, source)) {
                Permanent permanent = game.getPermanent(targetId);
                if (permanent != null) {
                    controllerId = permanent.getControllerId();
                }
            }
            if (controllerId == null) { // no more targets on the battlefield, effect can be discarded
                discard();
                return false;                               
            }
           
            if (game.getActivePlayerId().equals(controllerId)) {
                if (validForTurnNum == game.getTurnNum()) { // the turn has a second untap step but the effect is already related to the first untap step
                    discard();
                    return false;                               
                }
                validForTurnNum = game.getTurnNum();
            }
           
        }
       
        if (game.getTurn().getStepType() == PhaseStep.UNTAP && event.getType() == EventType.UNTAP) {
            if (targetPointer.getTargets(game, source).contains(event.getTargetId())) {
                return true;
            }
        }
        return false;
    }

    @Override
    public String getText(Mode mode) {
            if (staticText.length() > 0) {
                return staticText + " doesn't untap during its controller's next untap step";
            }
            else {
                return "Target " + mode.getTargets().get(0).getTargetName() + " doesn't untap during its controller's next untap step";
            }
    }

}
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