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package mage.abilities.keyword;
import java.util.UUID;
import mage.ObjectColor;
import mage.abilities.Ability;
import mage.abilities.SpellAbility;
import mage.abilities.common.SimpleStaticAbility;
import mage.abilities.costs.AdjustingSourceCosts;
import mage.abilities.costs.mana.ManaCost;
import mage.abilities.costs.mana.ManaCosts;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.choices.Choice;
import mage.choices.ChoiceImpl;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.filter.common.FilterControlledCreaturePermanent;
import mage.filter.predicate.Predicates;
import mage.filter.predicate.permanent.TappedPredicate;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.Target;
import mage.target.common.TargetControlledCreaturePermanent;
import mage.util.CardUtil;
/*
* 502.46. Convoke
*
* 502.46a Convoke is a static ability that functions while the spell is on the stack. "Convoke"
* means "As an additional cost to play this spell, you may tap any number of untapped creatures
* you control. Each creature tapped this way reduces the cost to play this spell by {1} or by
* one mana of any of that creature's colors." Using the convoke ability follows the rules for
* paying additional costs in rules 409.1b and 4091f-h.
*
* Example: You play Guardian of Vitu-Ghazi, a spell with convoke that costs {3}{G}{W}. You announce
* that you're going to tap an artifact creature, a red creature, and a green-and-white creature to
* help pay for it. The artifact creature and the red creature each reduce the spell's cost by {1}.
* You choose whether the green-white creature reduces the spell's cost by {1}, {G}, or {W}. Then
* the creatures become tapped as you pay Guardian of Vitu-Ghazi's cost.
*
* 502.46b Convoke can't reduce the cost to play a spell to less than 0.
*
* 502.46c Multiple instances of convoke on the same spell are redundant.
*
* You can tap only untapped creatures you control to reduce the cost of a spell with convoke
* that you play.
*
* While playing a spell with convoke, if you control a creature that taps to produce mana, you
* can either tap it for mana or tap it to reduce the cost of the spell, but not both.
*
* If you tap a multicolored creature to reduce the cost of a spell with convoke, you reduce
* the cost by {1} or by one mana of your choice of any of that creature's colors.
*
* Convoke doesn't change a spell's mana cost or converted mana cost.
*
*
* @author LevelX2
*/
public class ConvokeAbility extends SimpleStaticAbility implements AdjustingSourceCosts {
private static final FilterControlledCreaturePermanent filter = new FilterControlledCreaturePermanent();
static {
filter.add(Predicates.not(new TappedPredicate()));
}
public ConvokeAbility() {
super(Zone.STACK, null);
this.setRuleAtTheTop(true);
}
public ConvokeAbility(final ConvokeAbility ability) {
super(ability);
}
@Override
public ConvokeAbility copy() {
return new ConvokeAbility(this);
}
@Override
public void adjustCosts(Ability ability, Game game) {
Player player = game.getPlayer(controllerId);
if (player == null || !(ability instanceof SpellAbility)) {
return;
}
Target target = new TargetControlledCreaturePermanent(1, Integer.MAX_VALUE, filter,true);
target.setTargetName("creatures to convoke");
if (!target.canChoose(sourceId, controllerId, game)) {
return;
}
if (player.chooseUse(Outcome.Detriment, "Convoke creatures?", game)) {
player.chooseTarget(Outcome.Tap, target, ability, game);
if (target.getTargets().size() > 0) {
for (UUID creatureId: target.getTargets()) {
Permanent perm = game.getPermanent(creatureId);
if (perm == null || ability.getManaCostsToPay().convertedManaCost() == 0) {
continue;
}
if (!perm.isTapped() && perm.tap(game)) {
ManaCosts<ManaCost> manaCostsToReduce = new ManaCostsImpl<>();
int costBefore = ability.getManaCostsToPay().convertedManaCost();
Choice chooseManaType = buildChoice(perm.getColor(), ability.getManaCostsToPay());
if (chooseManaType.getChoices().size() > 0) {
if (chooseManaType.getChoices().size() > 1) {
chooseManaType.getChoices().add("Colorless");
chooseManaType.setMessage("Choose mana color to reduce from " + perm.getName());
while (!chooseManaType.isChosen()) {
player.choose(Outcome.Benefit, chooseManaType, game);
}
} else {
chooseManaType.setChoice(chooseManaType.getChoices().iterator().next());
}
if (chooseManaType.getChoice().equals("Black")) {
manaCostsToReduce.load("{B}");
}
if (chooseManaType.getChoice().equals("Blue")) {
manaCostsToReduce.load("{U}");
}
if (chooseManaType.getChoice().equals("Green")) {
manaCostsToReduce.load("{G}");
}
if (chooseManaType.getChoice().equals("White")) {
manaCostsToReduce.load("{W}");
}
if (chooseManaType.getChoice().equals("Red")) {
manaCostsToReduce.load("{R}");
}
if (chooseManaType.getChoice().equals("Colorless")) {
manaCostsToReduce.load("{1}");
}
CardUtil.reduceCost((SpellAbility)ability, manaCostsToReduce);
} else {
manaCostsToReduce.load("{1}");
CardUtil.reduceCost((SpellAbility)ability, manaCostsToReduce);
}
if (costBefore == ability.getManaCostsToPay().convertedManaCost()) {
// creature could not reduce mana costs so tap must be reverted
perm.untap(game);
} else {
game.informPlayers("Convoke: " + player.getName() + " taps " + perm.getLogName() + " to reduce mana costs by " + manaCostsToReduce.getText());
}
}
}
}
}
}
private Choice buildChoice(ObjectColor creatureColor, ManaCosts manaCostsSpell) {
Choice choice = new ChoiceImpl();
String spellCosts = manaCostsSpell.getText();
if (creatureColor.isBlack() && spellCosts.contains("B")) {
choice.getChoices().add("Black");
}
if (creatureColor.isBlue() && spellCosts.contains("U")) {
choice.getChoices().add("Blue");
}
if (creatureColor.isGreen() && spellCosts.contains("G")) {
choice.getChoices().add("Green");
}
if (creatureColor.isRed() && spellCosts.contains("R")) {
choice.getChoices().add("Red");
}
if (creatureColor.isWhite() && spellCosts.contains("W")) {
choice.getChoices().add("White");
}
return choice;
}
@Override
public String getRule() {
return "Convoke <i>(Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)</i>";
}
}