Package mage.target

Source Code of mage.target.TargetStackObject

/*
*  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:
*
*     1. Redistributions of source code must retain the above copyright notice, this list of
*        conditions and the following disclaimer.
*
*     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.
*
*  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
*  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
*  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
*  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
*  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
*  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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*  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*  The views and conclusions contained in the software and documentation are those of the
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*/

package mage.target;

import mage.constants.Zone;
import mage.abilities.Ability;
import mage.filter.FilterStackObject;
import mage.game.Game;
import mage.game.stack.StackObject;

import java.util.HashSet;
import java.util.Set;
import java.util.UUID;

/**
*
* @author BetaSteward_at_googlemail.com
*/
public class TargetStackObject extends TargetObject {

    protected FilterStackObject filter;

    public TargetStackObject() {
        this(1, 1, new FilterStackObject());
    }

    public TargetStackObject(FilterStackObject filter) {
        this(1, 1, filter);
    }

    public TargetStackObject(int numTargets, FilterStackObject filter) {
        this(numTargets, numTargets, filter);
    }

    public TargetStackObject(int minNumTargets, int maxNumTargets, FilterStackObject filter) {
        this.minNumberOfTargets = minNumTargets;
        this.maxNumberOfTargets = maxNumTargets;
        this.zone = Zone.STACK;
        this.filter = filter;
        this.targetName = filter.getMessage();
    }

    public TargetStackObject(final TargetStackObject target) {
        super(target);
        this.filter = target.filter.copy();
    }

    @Override
    public FilterStackObject getFilter() {
        return filter;
    }

    @Override
    public boolean canTarget(UUID id, Ability source, Game game) {
        StackObject stackObject = game.getStack().getStackObject(id);
        if (stackObject != null) {
            return filter.match(stackObject, game);
        }
        return false;
    }

    @Override
    public boolean canChoose(UUID sourceId, UUID sourceControllerId, Game game) {
        return canChoose(sourceControllerId, game);
    }

    @Override
    public boolean canChoose(UUID sourceControllerId, Game game) {
        int count = 0;
        for (StackObject stackObject: game.getStack()) {
            if (game.getPlayer(sourceControllerId).getInRange().contains(stackObject.getControllerId()) && filter.match(stackObject, game)) {
                count++;
                if (count >= this.minNumberOfTargets) {
                    return true;
                }
            }
        }
        return false;
    }

    @Override
    public Set<UUID> possibleTargets(UUID sourceId, UUID sourceControllerId, Game game) {
        return possibleTargets(sourceControllerId, game);
    }

    @Override
    public Set<UUID> possibleTargets(UUID sourceControllerId, Game game) {
        Set<UUID> possibleTargets = new HashSet<>();
        for (StackObject stackObject: game.getStack()) {
            if (game.getPlayer(sourceControllerId).getInRange().contains(stackObject.getControllerId()) && filter.match(stackObject, game)) {
                possibleTargets.add(stackObject.getId());
            }
        }
        return possibleTargets;
    }

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

}
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