private boolean canMoveBoxAt(PositionSwitcher movement, Box box) {
if (box != null) {
Position newBoxPos = movement.change(box.getPosition());
return isEmpty(newBoxPos);
}
return false;
}
public void movePlayer(PositionSwitcher movement) {
Position newPlayerPos = movement.change(player.getPosition());
Box box = boxIn(newPlayerPos);
if (canMoveBoxAt(movement, box)) {
box.move(movement);
player.move(movement);
} else if (isEmpty(newPlayerPos)) {
player.move(movement);
}
}
