forked from External/mage
291 lines
15 KiB
Java
291 lines
15 KiB
Java
package mage.game.stack;
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import mage.MageObject;
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import mage.abilities.Abilities;
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import mage.abilities.AbilitiesImpl;
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import mage.abilities.Ability;
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import mage.abilities.Mode;
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import mage.abilities.dynamicvalue.common.StaticValue;
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import mage.constants.Outcome;
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import mage.filter.FilterPermanent;
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import mage.game.Game;
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import mage.game.permanent.Permanent;
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import mage.players.Player;
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import mage.target.Target;
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import mage.target.TargetAmount;
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import java.util.Set;
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import java.util.UUID;
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/**
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* @author LevelX2
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*/
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public abstract class StackObjImpl implements StackObject {
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protected boolean targetChanged; // for Psychic Battle
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/**
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* Choose new targets for a stack Object
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*
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* @param game
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* @param playerId Player UUID who changes the targets.
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* @return
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*/
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public boolean chooseNewTargets(Game game, UUID playerId) {
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return chooseNewTargets(game, playerId, false, false, null);
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}
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/**
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* 114.6. Some effects allow a player to change the target(s) of a spell or
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* ability, and other effects allow a player to choose new targets for a
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* spell or ability.
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* <p>
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* 114.6a If an effect allows a player to "change the target(s)" of a spell
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* or ability, each target can be changed only to another legal target. If a
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* target can't be changed to another legal target, the original target is
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* unchanged, even if the original target is itself illegal by then. If all
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* the targets aren't changed to other legal targets, none of them are
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* changed.
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* <p>
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* 114.6b If an effect allows a player to "change a target" of a spell or
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* ability, the process described in rule 114.6a is followed, except that
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* only one of those targets may be changed (rather than all of them or none
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* of them).
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* <p>
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* 114.6c If an effect allows a player to "change any targets" of a spell or
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* ability, the process described in rule 114.6a is followed, except that
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* any number of those targets may be changed (rather than all of them or
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* none of them).
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* <p>
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* 114.6d If an effect allows a player to "choose new targets" for a spell
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* or ability, the player may leave any number of the targets unchanged,
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* even if those targets would be illegal. If the player chooses to change
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* some or all of the targets, the new targets must be legal and must not
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* cause any unchanged targets to become illegal.
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* <p>
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* 114.6e When changing targets or choosing new targets for a spell or
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* ability, only the final set of targets is evaluated to determine whether
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* the change is legal.
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* <p>
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* Example: Arc Trail is a sorcery that reads "Arc Trail deals 2 damage to
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* any target and 1 damage to another target creature or player." The
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* current targets of Arc Trail are Runeclaw Bear and Llanowar Elves, in
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* that order. You cast Redirect, an instant that reads "You may choose new
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* targets for target spell," targeting Arc Trail. You can change the first
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* target to Llanowar Elves and change the second target to Runeclaw Bear.
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* <p>
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* 114.7. Modal spells and abilities may have different targeting
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* requirements for each mode. An effect that allows a player to change the
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* target(s) of a modal spell or ability, or to choose new targets for a
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* modal spell or ability, doesn't allow that player to change its mode.
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* (See rule 700.2.)
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* <p>
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* 706.10c Some effects copy a spell or ability and state that its
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* controller may choose new targets for the copy. The player may leave any
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* number of the targets unchanged, even if those targets would be illegal.
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* If the player chooses to change some or all of the targets, the new
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* targets must be legal. Once the player has decided what the copy's
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* targets will be, the copy is put onto the stack with those targets.
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*
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* @param game
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* @param targetControllerId - player that can/has to change the target of
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* the spell
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* @param forceChange - does only work for targets with maximum of one
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* targetId
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* @param onlyOneTarget - 114.6b one target must be changed to another
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* target
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* @param filterNewTarget restriction for the new target, if null nothing is
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* cheched
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* @return
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*/
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@Override
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public boolean chooseNewTargets(Game game, UUID targetControllerId, boolean forceChange, boolean onlyOneTarget, FilterPermanent filterNewTarget) {
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Player targetController = game.getPlayer(targetControllerId);
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if (targetController != null) {
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StringBuilder oldTargetDescription = new StringBuilder();
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StringBuilder newTargetDescription = new StringBuilder();
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// Fused split spells or spells where "Splice on Arcane" was used can have more than one ability
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Abilities<Ability> objectAbilities = new AbilitiesImpl<>();
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if (this instanceof Spell) {
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objectAbilities.addAll(((Spell) this).getSpellAbilities());
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} else {
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objectAbilities.add(getStackAbility());
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}
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for (Ability ability : objectAbilities) {
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// Some spells can have more than one mode
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for (UUID modeId : ability.getModes().getSelectedModes()) {
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Mode mode = ability.getModes().get(modeId);
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ability.getModes().setActiveMode(mode);
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oldTargetDescription.append(ability.getTargetDescription(mode.getTargets(), game));
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for (Target target : mode.getTargets()) {
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Target newTarget = chooseNewTarget(targetController, ability, mode, target, forceChange, filterNewTarget, game);
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// clear the old target and copy all targets from new target
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target.clearChosen();
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for (UUID targetId : newTarget.getTargets()) {
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target.addTarget(targetId, newTarget.getTargetAmount(targetId), ability, game, false);
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}
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}
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newTargetDescription.append(ability.getTargetDescription(mode.getTargets(), game));
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}
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}
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if (!newTargetDescription.toString().equals(oldTargetDescription.toString()) && !game.isSimulation()) {
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game.informPlayers(this.getLogName() + " is now " + newTargetDescription);
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}
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return true;
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}
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return false;
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}
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/**
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* Handles the change of one target instance of a mode
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*
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* @param targetController - player that can choose the new target
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* @param ability
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* @param mode
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* @param target
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* @param forceChange
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* @param game
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* @return
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*/
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private Target chooseNewTarget(Player targetController, Ability ability, Mode mode, Target target, boolean forceChange, FilterPermanent filterNewTarget, Game game) {
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Target newTarget = target.copy();
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if (!targetController.getId().equals(getControllerId())) {
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newTarget.setTargetController(targetController.getId()); // target controller for the change is different from spell controller
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newTarget.setAbilityController(getControllerId());
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}
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newTarget.clearChosen();
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for (UUID targetId : target.getTargets()) {
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String targetNames = getNamesOftargets(targetId, game);
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String targetAmount = "";
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if (target.getTargetAmount(targetId) > 0) {
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targetAmount = " (amount: " + target.getTargetAmount(targetId) + ")";
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}
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// change the target?
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Outcome outcome = mode.getEffects().isEmpty() ? Outcome.Detriment : mode.getEffects().get(0).getOutcome();
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if (targetNames != null
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&& (forceChange || targetController.chooseUse(outcome, "Change this target: " + targetNames + targetAmount + '?', ability, game))) {
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Set<UUID> possibleTargets = target.possibleTargets(this.getSourceId(), getControllerId(), game);
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// choose exactly one other target - already targeted objects are not counted
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if (forceChange && possibleTargets != null && possibleTargets.size() > 1) { // controller of spell must be used (e.g. TargetOpponent)
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int iteration = 0;
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do {
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if (iteration > 0 && !game.isSimulation()) {
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game.informPlayer(targetController, "You may only select exactly one target that must be different from the origin target!");
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}
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iteration++;
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newTarget.clearChosen();
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newTarget.chooseTarget(outcome, getControllerId(), ability, game);
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// check target restriction TODO: add multiple target checks
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if (newTarget.getFirstTarget() != null && filterNewTarget != null) {
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Permanent newTargetPermanent = game.getPermanent(newTarget.getFirstTarget());
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if (newTargetPermanent == null || !filterNewTarget.match(newTargetPermanent, game)) {
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game.informPlayer(targetController, "Target does not fullfil the target requirements (" + filterNewTarget.getMessage() + ')');
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newTarget.clearChosen();
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}
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}
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// workaround to stop infinite AI choose (remove after chooseTarget can be called with extra filter to disable some ids)
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if (iteration > 10) {
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break;
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}
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}
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while (targetController.canRespond() && (targetId.equals(newTarget.getFirstTarget()) || newTarget.getTargets().size() != 1));
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// choose a new target
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} else {
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// build a target definition with exactly one possible target to select that replaces old target
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Target tempTarget = target.copy();
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if (target instanceof TargetAmount) {
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((TargetAmount) tempTarget).setAmountDefinition(new StaticValue(target.getTargetAmount(targetId)));
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}
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tempTarget.setMinNumberOfTargets(1);
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tempTarget.setMaxNumberOfTargets(1);
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if (!targetController.getId().equals(getControllerId())) {
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tempTarget.setTargetController(targetController.getId());
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tempTarget.setAbilityController(getControllerId());
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}
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boolean again;
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do {
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again = false;
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tempTarget.clearChosen();
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if (!tempTarget.chooseTarget(outcome, getControllerId(), ability, game)) {
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if (targetController.chooseUse(Outcome.Benefit, "No target object selected. Reset to original target?", ability, game)) {
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// use previous target no target was selected
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newTarget.addTarget(targetId, target.getTargetAmount(targetId), ability, game, false);
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} else {
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again = true;
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}
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} else // if possible add the alternate Target - it may not be included in the old definition nor in the already selected targets of the new definition
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{
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if (newTarget.getTargets().contains(tempTarget.getFirstTarget()) || target.getTargets().contains(tempTarget.getFirstTarget())) {
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if (targetController.isHuman()) {
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if (targetController.chooseUse(Outcome.Benefit, "This target was already selected from origin spell. Reset to original target?", ability, game)) {
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// use previous target no target was selected
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newTarget.addTarget(targetId, target.getTargetAmount(targetId), ability, game, false);
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} else {
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again = true;
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}
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} else {
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newTarget.addTarget(targetId, target.getTargetAmount(targetId), ability, game, false);
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}
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} else if (!target.canTarget(getControllerId(), tempTarget.getFirstTarget(), ability, game)) {
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if (targetController.isHuman()) {
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game.informPlayer(targetController, "This target is not valid!");
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again = true;
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} else {
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// keep the old
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newTarget.addTarget(targetId, target.getTargetAmount(targetId), ability, game, false);
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}
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} else if (newTarget.getFirstTarget() != null && filterNewTarget != null) {
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Permanent newTargetPermanent = game.getPermanent(newTarget.getFirstTarget());
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if (newTargetPermanent == null || !filterNewTarget.match(newTargetPermanent, game)) {
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game.informPlayer(targetController, "This target does not fullfil the target requirements (" + filterNewTarget.getMessage() + ')');
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again = true;
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}
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} else {
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// valid target was selected, add it to the new target definition
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newTarget.addTarget(tempTarget.getFirstTarget(), target.getTargetAmount(targetId), ability, game, false);
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}
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}
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} while (again && targetController.canRespond());
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}
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} // keep the target
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else {
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newTarget.addTarget(targetId, target.getTargetAmount(targetId), ability, game, false);
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}
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}
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return newTarget;
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}
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private String getNamesOftargets(UUID targetId, Game game) {
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MageObject object = game.getObject(targetId);
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String name = null;
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if (object == null) {
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Player targetPlayer = game.getPlayer(targetId);
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if (targetPlayer != null) {
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name = targetPlayer.getLogName();
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}
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} else {
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name = object.getName();
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}
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return name;
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}
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@Override
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public void removePTCDA() {
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}
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@Override
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public boolean isTargetChanged() {
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return targetChanged;
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}
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@Override
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public void setTargetChanged(boolean targetChanged) {
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this.targetChanged = targetChanged;
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}
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}
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