/** The threads run method */
public void run() {
Console.println("Quiz thread running", Console.MSG_DEBUG);
this.runGame();
// Doing some cleanup before exiting
Console.println("Quiz thread terminating", Console.MSG_DEBUG);
for (int i = 0; i < this.clients.size(); i++) {
QuizClientServices client = (QuizClientServices) this.clients.elementAt(i);
try {
client.setQuizMode(false);
this.servant.leaveGame(client);
} catch (RemoteException e) {
System.err.println(e.getMessage());
e.printStackTrace();
}
}
this.servant.setActiveQuiz(false);
this.clients.removeAllElements();
return;
}
/**
* Method to fetch a question for the quiz
*
* @return Next question to be displayed
*/
public QuizQuestion fetchQuestion() {
Console.println("Fetching a new quiz question", Console.MSG_NORMAL);
// If the quiz is just beginning or all question have been answered, begin again
if (this.questionCounter >= this.questions.size()) {
this.questionCounter = 0;
// After one round mix questions
this.questions = QuizQuestionFactory.mixQuestions(this.questions);
}
QuizQuestion question = (QuizQuestion) this.questions.elementAt(this.questionCounter);
this.questionCounter += 1;
return question;
}
/**
* Send a question to all clients of the quiz
*
* @param question The question to send
* @return Number of sent questions
* @throws RemoteException
*/
private int sendQuestion(QuizQuestion question) {
int i = 0;
Console.println("Sending question to all clients in the game", Console.MSG_NORMAL);
for (i = 0; i < this.clients.size(); i++) {
QuizClientServices client = (QuizClientServices) this.clients.elementAt(i);
try {
question.setSender((QuizClientServices) this.clients.elementAt(0));
client.display(question);
} catch (RemoteException e) {
System.err.println("RemoteException in Quiz.sendQuestion");
System.err.println("Client=" + i);
System.err.println(e.getMessage());
e.printStackTrace();
}
}
return i;
}
/**
* Method checks all answers to a question
*
* @param question
* @return Number of correct answers
*/
private int checkAnswers(QuizQuestion question) {
int correctAnswers = 0;
Vector answers = this.servant.getAnswers();
Console.println("Current question: " + question.getId(), Console.MSG_DEBUG);
Console.println("Correct answer: #" + question.getCorrectAnswer(), Console.MSG_DEBUG);
Console.println("There are " + answers.size() + " answers to be checked", Console.MSG_DEBUG);
// Iterating over the available answers
for (int i = 0; i < answers.size(); i++) {
QuizAnswer answer = (QuizAnswer) answers.elementAt(i);
String nick = null;
QuizClientServices client = null;
try {
client = answer.getSender();
if (this.servant.getConnectedClients().contains(client)) nick = client.getNickname();
} catch (RemoteException e) {
e.printStackTrace();
}
if (!this.servant.getConnectedClients().contains(client)) {
continue;
}
// Just to be sure that the current answer is related to the current question (SimpleClient)
if (answer.getQuestionId() != question.getId()) {
Console.println(
"Answer from client " + nick + " is not related to the current question",
Console.MSG_NORMAL);
continue;
}
Console.println(nick + " answered: #" + answer.getAnswer(), Console.MSG_DEBUG);
// Check if the answer is correct
if (answer.getAnswer() == question.getCorrectAnswer()) {
try {
// Updating client's score
client.updateScore(question.getPoints());
SystemMessage sysMsg = new SystemMessage();
sysMsg.setOpCode(SystemMessage.RIGHT_ANSWER);
sysMsg.setBody("Your answer was right. " + question.getPoints() + " points!");
client.display(sysMsg);
} catch (RemoteException e) {
System.err.println(e.getMessage());
e.printStackTrace();
}
Console.println(
"Correct answer from " + nick + ". " + question.getPoints() + " points added.",
Console.MSG_DEBUG);
correctAnswers += 1;
}
}
if (correctAnswers == 0) {
Console.println("No correct answer", Console.MSG_DEBUG);
}
// Reset the servant's answer vector
this.servant.clearAnswers();
return correctAnswers;
}