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Thread: Help with repaint

  1. #1
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    Unhappy Help with repaint

    Hey guys,

    Ok so basically what I want to do is that when the user clicks on one of the squares, the cercle with in it changes places.

    So far, I have the hit detection ( I know which square, so which cercle have been clicked ). I have added the coordinates, but the repaint()( in my GestEVT and mousePressed) doesnt work...

    I followed the following tutorials:
    http://zetcode.com/tutorials/java2dtutorial/hitmove/

    Here is my code:
     
    /**
     * Travail fait par Aravinthan Sivaneswaran
     * Date: 27-Sep-2011
     * Nom du projet: Projet d'intégration (La guerre des pions)
     */
    /**
     * Cette classe permet d'avoir les differents fenetres
     * necessaire pour le projet ainsi que les
     * �v�nements de gestion ( clavier et souris )
     */
    // Les imports necessaire au projet
    import javax.swing.*;
    import java.awt.*;
    import java.awt.geom.*;
    import java.awt.event.*;
     
    class views extends JFrame {
     
        // Declarer le panneau de jeu
        JPanel gameplayPanel;
     
        // D�clarer les boutons qui sera utilis� a travers la classe.
        JComboBox moveWhite;
        JComboBox moveBlack;
     
        // Declarer les formes qui sera utilise a travers la classe.
        Rectangle2D.Double[] rectangle;
        ZEllipse[] cercle;
     
     
        // Fonction qui permet d'avoir les differents f�netres du fonction.
        public views() {
     
            super("Creer les formes pour le jeu");
     
            setTitle("Game window");
            setSize(1200, 700);
     
            gameplayPanel = new JPanel();
            JPanel movesPanel = new JPanel();
     
            GestEvt listener=new GestEvt();
            gameplayPanel.addMouseListener(listener);
     
            Container contentPane = getContentPane();
     
     
            JLabel white_label = new JLabel("Bouger les pions blanc");
            moveWhite = new JComboBox();
            //moveWhite.addItemListener(this);
            moveWhite.addItem("Bouger pion 1");
            moveWhite.addItem("Bouger pion 2");
     
            JLabel black_label = new JLabel("Bouger les pions noir");
            moveBlack = new JComboBox();
            //moveBlack.addItemListener(this);
            moveBlack.addItem("Bouger pion 1");
            moveBlack.addItem("Bouger pion 2");
     
            JTextArea userMoves = new JTextArea(20, 100);
     
     
            gameplayPanel.add(white_label);
            gameplayPanel.add(moveWhite);
            gameplayPanel.add(black_label);
            gameplayPanel.add(moveBlack);
     
            movesPanel.add(userMoves);
     
            contentPane.add(gameplayPanel, BorderLayout.CENTER);
            contentPane.add(movesPanel, BorderLayout.SOUTH);
     
        }
     
        // Fonction qui permet de dessiner les diff�rent formes 2D.
        public void paint(Graphics g) {
     
            // Appeler la méthode paint de la superclasse.
            super.paint(g);
     
            // Créer la 2D par le remplacement du type de g en Graphics2D.
            Graphics2D g2d = (Graphics2D) g;
     
     
            // Tracer autant de rectangles demandes par l'utilisateur.
            rectangle = new Rectangle.Double[5];
     
            for (int x = 0; x < 5; x++) {
                rectangle[x] = new Rectangle2D.Double(250 + (x * 100), 250, 100, 100);
                rectangle[x].setFrame(250 + (x * 100), 250, 100, 100);
                g2d.draw(rectangle[x]);
            }
     
            // Tracer autant de cercles necessaire.
            cercle = new ZEllipse[4];
            int y = 0;
     
            for (int x = 0; x < 5; x++) {
                g2d.setPaint(Color.black);
                if (x == 2) {
                    g2d.setPaint(Color.white);
                    x = 3;
                } else if (x == 4) {
                    g2d.setPaint(Color.white);
                }
                cercle[y] = new ZEllipse(300 + (x * 100), 300, 10, 10);
                g2d.fill(cercle[y]);
                y++;
            }
     
        }
     
        class ZEllipse extends Ellipse2D.Float {
            public ZEllipse(float x, float y, float width, float height) {
                setFrame(x, y, width, height);
            }
     
            public void addX(float x) {
                this.x += x;
            }
     
            public void addY(float y) {
                this.y += y;
            }
     
     
        }
     
        class validation{
            public boolean isHit(int s, int c, int x, int y){
                double cercleX = cercle[c].getX();
                double cercleY = cercle[c].getY();
                System.out.println("Square"+s+"Cercle"+c);
                if(rectangle[s].contains(cercleX, cercleY)){
                    return true;
                }
                else{
                    return false;
                }
     
            }
        }
     
        private class GestEvt extends MouseAdapter{
            public void mousePressed(MouseEvent event){
               int x = event.getX();
               int y = event.getY();
               int square;
               int point;
               validation v = new validation();
     
               // Creer la zone du rectangle
               if(((y>249 && y<351) && (x>250 && x<(250+(5*100))))){
                    square = (x-250)/100;
                    point = square;
                    if(square == 4){
                        point = 3;
                    }
     
                    // Verifier s'il contient un point
                    for (int i = 0; i < 4; i++) {
                        if(v.isHit(square, i, x, y)){
                            System.out.println("IS HIT");
                            System.out.println("X before:" +cercle[i].getX());
                            cercle[i].addX(100);
                            cercle[i].addY(100);
                            repaint();
                            System.out.println("X after:" +cercle[i].getX()); 
                        }
                    }
     
              }
            }
        }
     
    }

    Thanks for your help,
    Ara
    Last edited by AraHabs; October 16th, 2011 at 09:33 AM.


  2. #2
    Administrator copeg's Avatar
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    Default Re: Help with repaint

    Please define "Doesn't work". For what its worth, you should consider drawing within a JPanel, and override the paintComponent method (as opposed to drawing directly in a JFrame using paint)

  3. #3
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    Default Re: Help with repaint

    Quote Originally Posted by copeg View Post
    Please define "Doesn't work". For what its worth, you should consider drawing within a JPanel, and override the paintComponent method (as opposed to drawing directly in a JFrame using paint)
    Well, it doesnt paint. I mean the println give me the right infos ( "IS HIT" ), changes the x coordinates but it doesnt repaint...
    As for drawing in JPanel, it would mean that I would have to repaint the whole Panel... woudn't it be easier to repaint just that shape?

  4. #4
    Administrator copeg's Avatar
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    Default Re: Help with repaint

    Quote Originally Posted by AraHabs View Post
    Well, it doesnt paint. I mean the println give me the right infos ( "IS HIT" ), changes the x coordinates but it doesnt repaint...
    The cercle references are remade every call to paint - they are not being reused. Thus every call to addX/Y is lost when the reference is assigned a new value
    Quote Originally Posted by AraHabs View Post
    As for drawing in JPanel, it would mean that I would have to repaint the whole Panel... woudn't it be easier to repaint just that shape?
    That is exactly what you are doing now, repainting the JFrame.

  5. #5
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    Default Re: Help with repaint

    Well what should I do then?

    I am kind of lost to what to do... I've been trying to make this work for the last week or so...

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    Default Re: Help with repaint

    What does your code look like now. Did you add a JPanel to contain the drawing and override its paintComponent method?

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