/*
* 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
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*/
package mage.target;
import java.util.HashSet;
import java.util.Set;
import java.util.UUID;
import mage.abilities.Ability;
import mage.constants.Zone;
import mage.filter.FilterSpell;
import mage.game.Game;
import mage.game.stack.Spell;
import mage.game.stack.StackObject;
/**
*
* @author BetaSteward_at_googlemail.com
*/
public class TargetSpell extends TargetObject {
protected FilterSpell filter;
public TargetSpell() {
this(1, 1, new FilterSpell());
}
public TargetSpell(FilterSpell filter) {
this(1, 1, filter);
}
public TargetSpell(int numTargets, FilterSpell filter) {
this(numTargets, numTargets, filter);
}
public TargetSpell(int minNumTargets, int maxNumTargets, FilterSpell filter) {
this.minNumberOfTargets = minNumTargets;
this.maxNumberOfTargets = maxNumTargets;
this.zone = Zone.STACK;
this.filter = filter;
this.targetName = filter.getMessage();
}
public TargetSpell(final TargetSpell target) {
super(target);
this.filter = target.filter.copy();
}
@Override
public FilterSpell getFilter() {
return filter;
}
@Override
public boolean canTarget(UUID id, Ability source, Game game) {
// rule 114.4. A spell or ability on the stack is an illegal target for itself.
if (source == null || source.getId().equals(id)) {
return false;
}
Spell spell = game.getStack().getSpell(id);
if (spell != null) {
return filter.match(spell, source.getControllerId(), game);
}
return false;
}
@Override
public boolean canChoose(UUID sourceId, UUID sourceControllerId, Game game) {
int count = 0;
for (StackObject stackObject: game.getStack()) {
// rule 114.4. A spell or ability on the stack is an illegal target for itself.
if (sourceId != null && sourceId.equals(stackObject.getSourceId())) {
continue;
}
if (canBeChosen(stackObject, sourceControllerId, game)) {
count++;
if (count >= this.minNumberOfTargets) {
return true;
}
}
}
return false;
}
@Override
public boolean canChoose(UUID sourceControllerId, Game game) {
return canChoose(null, sourceControllerId, game);
}
@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 (canBeChosen(stackObject, sourceControllerId, game)) {
possibleTargets.add(stackObject.getId());
}
}
return possibleTargets;
}
@Override
public TargetSpell copy() {
return new TargetSpell(this);
}
private boolean canBeChosen(StackObject stackObject, UUID sourceControllerId, Game game) {
return stackObject instanceof Spell
&& game.getPlayer(sourceControllerId).getInRange().contains(stackObject.getControllerId())
&& filter.match((Spell) stackObject, sourceControllerId, game);
}
}