private boolean checkAbilityStillExists(
Ability ability, ContinuousEffect effect, GameEvent event, Game game) {
switch (effect
.getDuration()) { // effects with fixed duration don't need an object with the source
// ability (e.g. a silence cast with isochronic Scepter has no more a card
// object
case EndOfCombat:
case EndOfGame:
case EndOfStep:
case EndOfTurn:
case OneUse:
case Custom: // custom duration means the effect ends itself if needed
return true;
}
if (ability.getSourceId() == null) { // commander replacement effect
return true;
}
MageObject object;
if (event.getType().equals(EventType.ZONE_CHANGE)
&& ((ZoneChangeEvent) event).getFromZone().equals(Zone.BATTLEFIELD)
&& event.getTargetId().equals(ability.getSourceId())) {
object = ((ZoneChangeEvent) event).getTarget();
} else {
object = game.getObject(ability.getSourceId());
}
if (object == null) {
return false;
}
boolean exists = true;
if (!object.getAbilities().contains(ability)) {
exists = false;
if (object instanceof PermanentCard) {
PermanentCard permanent = (PermanentCard) object;
if (permanent.canTransform() && event.getType() == GameEvent.EventType.TRANSFORMED) {
exists = permanent.getCard().getAbilities().contains(ability);
}
}
} else {
if (object instanceof PermanentCard) {
PermanentCard permanent = (PermanentCard) object;
if (permanent.isFaceDown(game) && !ability.getWorksFaceDown()) {
return false;
}
} else if (object instanceof Spell) {
Spell spell = (Spell) object;
if (spell.isFaceDown(game) && !ability.getWorksFaceDown()) {
return false;
}
}
}
return exists;
}
