I want make a game like pacman, now I want to end the game when all score disappear. This is my Code << Code Omitted >> It's not work, I want to know how to solve it. I am sorry that my English is not good.

if (getObjectsInRange(555, Score.class).size() == 0) {

// or
if (getObjectsInRange(555, Score.class).isEmpty()) {

// or possibly
if (getWorld().getObjects(Score.class).isEmpty()) {

The condition in line 1 will always be false. A List object is always returned by getObjectsInRange. You need to check the size of the list returned; or rather, check if it is an empty list