/**
* Lets the given robot pick up and use an item.
*
* @param robot The robot that has to execute this command.
* @effect The given robot picks up and use a random item on its current position, provided
* there is an item on the same position.
*/
@Override
public void execute(Robot robot)
throws NullPointerException, IllegalArgumentException, IllegalStateException {
try {
Item item = robot.getBoard().getRandomItemOnPosition(robot.getPosition());
if (item != null) robot.pickUp(item);
robot.use(item);
} catch (NullPointerException exc) {
assert false;
} catch (IllegalArgumentException exc) {
System.err.println(exc.getMessage());
} catch (IllegalStateException exc) {
assert false;
} catch (NoSuchElementException exc) {
System.err.println(exc.getMessage());
}
}
