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package mage.abilities.keyword;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;
import java.util.UUID;
import mage.abilities.Ability;
import mage.abilities.common.AttacksTriggeredAbility;
import mage.abilities.dynamicvalue.DynamicValue;
import mage.abilities.effects.Effect;
import mage.abilities.effects.common.continuous.BoostSourceEffect;
import mage.constants.Duration;
import mage.constants.WatcherScope;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.watchers.Watcher;
/**
*
* @author emerald000
*/
public class MeleeAbility extends AttacksTriggeredAbility {
public MeleeAbility() {
super(new BoostSourceEffect(new MeleeDynamicValue(), new MeleeDynamicValue(), Duration.EndOfTurn), false);
this.addWatcher(new MeleeWatcher());
}
public MeleeAbility(final MeleeAbility ability) {
super(ability);
}
@Override
public MeleeAbility copy() {
return new MeleeAbility(this);
}
@Override
public String getRule() {
return "Melee <i>(Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked with a creature this combat.)</i>";
}
}
class MeleeWatcher extends Watcher {
private final HashMap<UUID, Set<UUID>> playersAttacked = new HashMap<>(0);
MeleeWatcher() {
super("MeleeWatcher", WatcherScope.GAME);
}
MeleeWatcher(final MeleeWatcher watcher) {
super(watcher);
this.playersAttacked.putAll(watcher.playersAttacked);
}
@Override
public void watch(GameEvent event, Game game) {
if (event.getType() == EventType.BEGIN_COMBAT_STEP_PRE) {
this.playersAttacked.clear();
}
else if (event.getType() == EventType.ATTACKER_DECLARED) {
Set<UUID> attackedPlayers = this.playersAttacked.getOrDefault(event.getPlayerId(), new HashSet<>(1));
attackedPlayers.add(event.getTargetId());
this.playersAttacked.put(event.getPlayerId(), attackedPlayers);
}
}
public int getNumberOfAttackedPlayers(UUID attackerId) {
return this.playersAttacked.get(attackerId).size();
}
@Override
public MeleeWatcher copy() {
return new MeleeWatcher(this);
}
}
class MeleeDynamicValue implements DynamicValue {
@Override
public int calculate(Game game, Ability sourceAbility, Effect effect) {
MeleeWatcher watcher = (MeleeWatcher) game.getState().getWatchers().get(MeleeWatcher.class.getSimpleName());
if (watcher != null) {
return watcher.getNumberOfAttackedPlayers(sourceAbility.getControllerId());
}
return 0;
}
@Override
public MeleeDynamicValue copy() {
return new MeleeDynamicValue();
}
@Override
public String getMessage() {
return "number of opponents you attacked this combat";
}
@Override
public String toString() {
return "X";
}
}