public void merge(Tile another) {
getStyleClass().remove("tile-" + value);
this.value += another.getValue();
setText(value.toString());
merged = true;
getStyleClass().add("tile-" + value);
}
public boolean isMergeable(Tile anotherTile) {
return anotherTile != null && getValue().equals(anotherTile.getValue());
}