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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*  or implied, of BetaSteward_at_googlemail.com.
*/

package mage.target;

import java.util.HashSet;
import java.util.Set;
import java.util.UUID;
import mage.Constants.Zone;
import mage.abilities.Ability;
import mage.filter.FilterStackObject;
import mage.game.Game;
import mage.game.stack.StackObject;

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

  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);
    }
    return false;
  }

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

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

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

}
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