/**
* zoom to the card before or after the current zoomed card (direction = 1 for next, -1 for
* previous)
*/
private void changeZoomedCard(int direction) {
stopMakingSpace();
zoomCard.addAction(Actions.scaleTo(1.0f, 1.0f, 0.2f, Interpolation.pow2));
addCard(zoomCard, zoomReturnIndex);
makeSpace(zoomReturnIndex + direction);
zoomCard = (CardGroup) cards.getChildren().get(zoomReturnIndex + direction);
zoomCard.clearActions();
zoomCard.remove();
addActor(zoomCard);
zoomCard.setScale(3.0f);
zoomCard.setPosition(600, 100);
zoomReturnIndex += direction;
updateZoomControls();
}
