var score:int = 0;

//stroring questions

nextButton.addEventListener(MouseEvent.CLICK, DeclareXMLVariables);
function DeclareXMLVariables(event:MouseEvent):void{

    nextButton.visible = false;
    var tempScore:int = 0;

    //Storing answered questions
    var answeredQuestion1:String = 'First Question';
    var answeredQuestion2:String = 'Second Question';

    //All questions
    var question1:String = test.questions.questionAnswers1.question;
    var question2:String = test.questions.questionAnswers2.question;
    var question3:String = test.questions.questionAnswers3.question;
    var question4:String = test.questions.questionAnswers4.question;
    var question5:String = test.questions.questionAnswers5.question;
    var question6:String = test.questions.questionAnswers6.question;
    var questions:Array = [question1, question2, question3, question4,
                           question5, question6]; //storing all questions from XML file

    //Answers for question 1
    var quest1Answer1:String = test.questions.questionAnswers1.answer1;
    var quest1Answer2:String = test.questions.questionAnswers1.answer2;
    var quest1Answer3:String = test.questions.questionAnswers1.answer3;
    var quest1CorrectAnswer:String = test.questions.questionAnswers1.correctAnswer;
    var quest1Answers:Array = [quest1Answer1, quest1Answer2, quest1Answer3, quest1CorrectAnswer];

    //Answers for question 2
    var quest2Answer1:String = test.questions.questionAnswers2.answer1;
    var quest2Answer2:String = test.questions.questionAnswers2.answer2;
    var quest2Answer3:String = test.questions.questionAnswers2.answer3;
    var quest2CorrectAnswer:String = test.questions.questionAnswers2.correctAnswer;
    var quest2Answers:Array = [quest2Answer1, quest2Answer2, quest2Answer3, quest2CorrectAnswer];

    //Answers for question 3
    var quest3Answer1:String = test.questions.questionAnswers3.answer1;
    var quest3Answer2:String = test.questions.questionAnswers3.answer2;
    var quest3Answer3:String = test.questions.questionAnswers3.answer3;
    var quest3CorrectAnswer:String = test.questions.questionAnswers3.correctAnswer;
    var quest3Answers:Array = [quest3Answer1, quest3Answer2, quest3Answer3, quest3CorrectAnswer];

    //Answers for question 4
    var quest4Answer1:String = test.questions.questionAnswers4.answer1;
    var quest4Answer2:String = test.questions.questionAnswers4.answer2;
    var quest4Answer3:String = test.questions.questionAnswers4.answer3;
    var quest4CorrectAnswer:String = test.questions.questionAnswers4.correctAnswer;
    var quest4Answers:Array = [quest4Answer1, quest4Answer2, quest4Answer3, quest4CorrectAnswer];

    //Answers for question 5
    var quest5Answer1:String = test.questions.questionAnswers5.answer1;
    var quest5Answer2:String = test.questions.questionAnswers5.answer2;
    var quest5Answer3:String = test.questions.questionAnswers5.answer3;
    var quest5CorrectAnswer:String = test.questions.questionAnswers5.correctAnswer;
    var quest5Answers:Array = [quest5Answer1, quest5Answer2, quest5Answer3, quest5CorrectAnswer];

    //Answers for question 6
    var quest6Answer1:String = test.questions.questionAnswers6.answer1;
    var quest6Answer2:String = test.questions.questionAnswers6.answer2;
    var quest6Answer3:String = test.questions.questionAnswers6.answer3;
    var quest6CorrectAnswer:String = test.questions.questionAnswers6.correctAnswer;
    var quest6Answers:Array = [quest6Answer1, quest6Answer2, quest6Answer3, quest6CorrectAnswer];

    var rndQuestions:String = questions[Math.floor(questions.length * Math.random())]; //randomising questions
    var randomisedQuestions = String(rndQuestions); //storing random questions

    question.text = randomisedQuestions; //stores random questions in a text box

    //stores answers into three different text boxes on a specific question
    if (question.text == questions[0]){
        answer1.text = quest1Answers[0];
        answer2.text = quest1Answers[1];
        answer3.text = quest1Answers[2];
    } else if(question.text == questions[1]){
        answer1.text = quest2Answers[0];
        answer2.text = quest2Answers[1];
        answer3.text = quest2Answers[2];
    } else if(question.text == questions[2]){
        answer1.text = quest3Answers[0];
        answer2.text = quest3Answers[1];
        answer3.text = quest3Answers[2];
    } else if(question.text == questions[3]){
        answer1.text = quest4Answers[0];
        answer2.text = quest4Answers[1];
        answer3.text = quest4Answers[2];
    } else if (question.text == questions[4]){
        answer1.text = quest5Answers[0];
        answer2.text = quest5Answers[1];
        answer3.text = quest5Answers[2];
    } else if (question.text == questions[5]){
        answer1.text = quest6Answers[0];
        answer2.text = quest6Answers[1];
        answer3.text = quest6Answers[2];
    }

    answer1Button.addEventListener(MouseEvent.CLICK, CheckQuestion1Answer);
    function CheckQuestion1Answer(event:MouseEvent):void{
        if (answer1.text == quest1Answers[3] || answer1.text == quest2Answers[3] || answer1.text == quest3Answers[3] ||
            answer1.text == quest4Answers[3] || answer1.text == quest5Answers[3] || answer1.text == quest6Answers[3]){
            //increments 1 to user score
            tempScore++;
            score =+ tempScore;
            userScore.text = String(score);

            //stores randomised question
            answeredQuestion1 = String(randomisedQuestions);
            trace(answeredQuestion1);

            //checks to see if first randomised answered question is stored
            if(answeredQuestion1 == 'First Question'){
                answeredQuestion2 = String(randomisedQuestions);
                trace(answeredQuestion2);
            }

            //randomises questions
            rndQuestions = questions[Math.floor(questions.length * Math.random())];
            randomisedQuestions = String(rndQuestions);

            var rndQuestionCount:int = 0;

            while(randomisedQuestions != answeredQuestion1 && rndQuestionCount == 0 || randomisedQuestions != answeredQuestion2 && rndQuestionCount == 0){
                rndQuestions = questions[Math.floor(questions.length * Math.random())];
                randomisedQuestions = String(rndQuestions);
                rndQuestionCount++;
            }

            question.text = randomisedQuestions;

        } else {
            //increments -1 to user score
            tempScore--;
            score =+ tempScore;
            userScore.text = String(score);
            //randomises questions
            rndQuestions = questions[Math.floor(questions.length * Math.random())];
            randomisedQuestions = String(rndQuestions);
            question.text = randomisedQuestions;
        }

        //stores answers into three different text boxes on a specific question
        if (question.text == questions[0]){
            answer1.text = quest1Answers[0];
            answer2.text = quest1Answers[1];
            answer3.text = quest1Answers[2];
        } else if(question.text == questions[1]){
            answer1.text = quest2Answers[0];
            answer2.text = quest2Answers[1];
            answer3.text = quest2Answers[2];
        } else if(question.text == questions[2]){
            answer1.text = quest3Answers[0];
            answer2.text = quest3Answers[1];
            answer3.text = quest3Answers[2];
        } else if(question.text == questions[3]){
            answer1.text = quest4Answers[0];
            answer2.text = quest4Answers[1];
            answer3.text = quest4Answers[2];
        } else if (question.text == questions[4]){
            answer1.text = quest5Answers[0];
            answer2.text = quest5Answers[1];
            answer3.text = quest5Answers[2];
        } else if (question.text == questions[5]){
            answer1.text = quest6Answers[0];
            answer2.text = quest6Answers[1];
            answer3.text = quest6Answers[2];
        }
    }
    answer2Button.addEventListener(MouseEvent.CLICK, CheckQuestion2Answer);
    function CheckQuestion2Answer(event:MouseEvent):void{
        if (answer2.text == quest1Answers[3] || answer2.text == quest2Answers[3] || answer2.text == quest3Answers[3] ||
            answer2.text == quest4Answers[3] || answer2.text == quest5Answers[3] || answer2.text == quest6Answers[3]){
            //increments 1 to user score
            tempScore++;
            score =+ tempScore;
            userScore.text = String(score);
            //randomises questions
            rndQuestions = questions[Math.floor(questions.length * Math.random())];
            randomisedQuestions = String(rndQuestions);
            question.text = randomisedQuestions;
        } else {
            //increments -1 to user score
            tempScore--;
            score =+ tempScore;
            userScore.text = String(score);
            //randomises questions
            rndQuestions = questions[Math.floor(questions.length * Math.random())];
            randomisedQuestions = String(rndQuestions);
            question.text = randomisedQuestions;
        }

        //stores answers into three different text boxes on a specific question
        if (question.text == questions[0]){
            answer1.text = quest1Answers[0];
            answer2.text = quest1Answers[1];
            answer3.text = quest1Answers[2];
        } else if(question.text == questions[1]){
            answer1.text = quest2Answers[0];
            answer2.text = quest2Answers[1];
            answer3.text = quest2Answers[2];
        } else if(question.text == questions[2]){
            answer1.text = quest3Answers[0];
            answer2.text = quest3Answers[1];
            answer3.text = quest3Answers[2];
        } else if(question.text == questions[3]){
            answer1.text = quest4Answers[0];
            answer2.text = quest4Answers[1];
            answer3.text = quest4Answers[2];
        } else if (question.text == questions[4]){
            answer1.text = quest5Answers[0];
            answer2.text = quest5Answers[1];
            answer3.text = quest5Answers[2];
        } else if (question.text == questions[5]){
            answer1.text = quest6Answers[0];
            answer2.text = quest6Answers[1];
            answer3.text = quest6Answers[2];
        }
    }
    answer3Button.addEventListener(MouseEvent.CLICK, CheckQuestion3Answer);
    function CheckQuestion3Answer(event:MouseEvent):void{
        if (answer3.text == quest1Answers[3] || answer3.text == quest2Answers[3] || answer3.text == quest3Answers[3] ||
            answer3.text == quest4Answers[3] || answer3.text == quest5Answers[3] || answer3.text == quest6Answers[3]){
            //increments 1 to user score
            tempScore++;
            score =+ tempScore;
            userScore.text = String(score);
            //randomises questions
            rndQuestions = questions[Math.floor(questions.length * Math.random())];
            randomisedQuestions = String(rndQuestions);
            question.text = randomisedQuestions;
        } else {
            //increments -1 to user score
            tempScore--;
            score =+ tempScore;
            userScore.text = String(score);
            //randomises questions
            rndQuestions = questions[Math.floor(questions.length * Math.random())];
            randomisedQuestions = String(rndQuestions);
            question.text = randomisedQuestions;
        }

        //stores answers into three different text boxes on a specific question
        if (question.text == questions[0]){
            answer1.text = quest1Answers[0];
            answer2.text = quest1Answers[1];
            answer3.text = quest1Answers[2];
        } else if(question.text == questions[1]){
            answer1.text = quest2Answers[0];
            answer2.text = quest2Answers[1];
            answer3.text = quest2Answers[2];
        } else if(question.text == questions[2]){
            answer1.text = quest3Answers[0];
            answer2.text = quest3Answers[1];
            answer3.text = quest3Answers[2];
        } else if(question.text == questions[3]){
            answer1.text = quest4Answers[0];
            answer2.text = quest4Answers[1];
            answer3.text = quest4Answers[2];
        } else if (question.text == questions[4]){
            answer1.text = quest5Answers[0];
            answer2.text = quest5Answers[1];
            answer3.text = quest5Answers[2];
        } else if (question.text == questions[5]){
            answer1.text = quest6Answers[0];
            answer2.text = quest6Answers[1];
            answer3.text = quest6Answers[2];
        }
    }
}