@Test
public void testPersistence() {
try {
em.getTransaction().begin();
Student u = new Student();
u.setScore(12);
u.setName("eskatos");
em.persist(u);
assertTrue(em.contains(u));
em.remove(u);
assertFalse(em.contains(u));
em.getTransaction().commit();
} catch (Exception ex) {
em.getTransaction().rollback();
ex.printStackTrace();
fail("Exception during testPersistence");
}
}
/** Method run in case of wrong answer. */
private void answeredWrongly() {
student.increaseNumberOfWrongAnswers();
if (student.getNumberOfWrongAnswers() >= 9) {
student.setNumberOfWrongAnswers(0);
changeDifficulty(student.getDifficulty() - 1);
}
}
/** Method run in case of correct answer. */
private void answeredCorrectly() {
increaseScore();
student.increaseNumberOfCorrectAnswers();
if (student.getNumberOfRightAnswers() >= 9) {
changeDifficulty(student.getDifficulty() + 1);
student.setNumberOfRightAnswers(0);
}
}
/**
* Sets the desired difficulty.
*
* @param difficulty Integer; 1-10
*/
public void changeDifficulty(int difficulty) {
student.setDifficulty(difficulty);
this.questionsController =
new QuestionsController(10, student.getDifficulty(), student.getOperationType());
}
/**
* Sets a new score for the student.
*
* @param newScore Integer. The new score to set.
*/
public void setScore(int newScore) {
student.setScore(newScore);
}
/** @return Returns the students score. */
public int getScore() {
return student.getScore();
}
/** @return The players username. */
public String getPlayerName() {
return student.getName();
}
/** When called; increases the students score by the amount set in REWARD_SCORE (10) */
protected void increaseScore() {
student.setScore(student.getScore() + REWARD_SCORE);
}
/** @param student An Object of the class Student. */
public GameController(Student student) {
this.student = student;
this.questionsController =
new QuestionsController(10, student.getDifficulty(), student.getOperationType());
}
/**
* ADDITION = 0; SUBTRACTION = 1; MULTIPLICATION = 2; DIVISION = 3;
*
* @param playerName The students username
* @param operationType Desired operation type; addition, substraction, multiplication, division.
* @param difficulty Desired difficulty at game start. Will dynamically change to accomodate the
* students skill-level.
*/
public GameController(String playerName, int operationType, int difficulty) {
student = new Student(playerName);
student.setOperationType(operationType);
this.questionsController = new QuestionsController(10, difficulty, operationType);
restoreGame();
}