import java.awt.*;

import java.applet.*;



public class Minigolf extends Applet implements MyButtonPushListener {



    Color colorFrameLight = new Color (255,255,255);     // Color.white

    Color colorFrameDark  = new Color (128,128,128);     // Color.gray

    Color colorWindow     = new Color (192,192,192);     // Color.lightGray

    Color colorPlayfield  = new Color (102,102,153);

    Color colorException  = new Color (222,222,222);



    Font textFont = new Font("Helvetica", Font.BOLD, 16);



    MyButton itsButtonReset;

    MyButton itsButtonNext;

    MyButton itsButtonPrev;



    Scrollbar itsStrength;

    MyButton itsButtonShot;



    BahnVerwalter itsBahnverwalter;







    public void init() {

        super.init();

        System.out.println("Initialisierung (init)");



        /* Buttons */

        setLayout(null);

        setBackground (colorWindow);



        itsButtonReset = new MyButton("Reset");

        itsButtonNext  = new MyButton("Next");

        itsButtonPrev  = new MyButton("Previous");

        add(itsButtonReset);

        add(itsButtonNext);

        add(itsButtonPrev);

        itsButtonReset.reshape(30,20, 100,20);

        itsButtonNext.reshape(30,45, 100,20);

        itsButtonPrev.reshape(30,70, 100,20);

        itsButtonReset.addButtonPushListener(this);

        itsButtonNext.addButtonPushListener(this);

        itsButtonPrev.addButtonPushListener(this);



        /* Slider und Zubehör */

        itsStrength = new Scrollbar(Scrollbar.VERTICAL, 100, 1, 0, 100);

        add(itsStrength);

        itsStrength.reshape(15,180, 15,150);

        itsButtonShot = new MyButton("Shot");

        add(itsButtonShot);

        itsButtonShot.reshape(40, 310, 90, 20);

        itsButtonShot.addButtonPushListener(this);



        /* Spielleiter oder Bahnvewalter */

        itsBahnverwalter = new BahnVerwalter();



        /* lese Eingabe Parameter */

        String parameterName;

        String parameterValue;

        for (int bahnNummer =1; bahnNummer <=18; bahnNummer++) {

            parameterName = "Bahn" + bahnNummer;

            parameterValue = getParameter (parameterName);

            if (parameterValue == null) continue;

            itsBahnverwalter.addNewBahn (bahnNummer, parameterValue);

        };



        /* wähle erste Bahn aus */

        itsBahnverwalter.selectBahn(1);

        itsBahnverwalter.selectNextBahn();

        itsBahnverwalter.selectPrevBahn();

        itsBahnverwalter.resetCurrentBahn();



        /* Ball */

        itsBahnverwalter.itsBall.init();

        add(itsBahnverwalter.itsBall,0);



    };



    public void destroy()

    {

        System.out.println("Destroy (destroy)");

    };







    // Method directly from Component class

    // overwrite here to see what happens if we don't clear the screen

    public void update(Graphics g) {

	//g.setColor(getBackground());

	//g.fillRect(0, 0, width, height);

	//g.setColor(getForeground());

	paint(g);

    }





    public void paint(Graphics g)

    {

        int kFrameWidth = 5;

        int kBezelWidth = 2;



        System.out.println("Jetzt wird gezeichnet");



        // zeichne Window

        //setBackground (colorWindow);  // is method of super-super-class of Applet

        //g.clearRect(0,0,size().width,size().height);

        // not used here to reduce flicker

        // but clear left side of screen

        setBackground (colorWindow);

        g.clearRect(0,0,150,size().height);



        // Buttons werden automatisch gezeichnet

        // aber plaziere Ihn am unteren Bildrand

        itsButtonShot.reshape(40, size().height - 40, 90, 20);

        int sizeYStrength = Math.min (size().height - 180, 150);

        int posYStrength = size().height - 20 - sizeYStrength;

        itsStrength.reshape(15,posYStrength, 15,sizeYStrength);



        // zeichne Rahmen, draw it yourself

        for (int i = 0; i < kFrameWidth; i++)

        {

            g.setColor (colorFrameLight);

            g.drawLine (i, i, size().width -i, i);

            g.drawLine (i, i, i, size().height -i);

            g.setColor (colorFrameDark);

            g.drawLine (size().width -i, i, size().width -i, size().height -i );

            g.drawLine (i,  size().height -i, size().width -i, size().height -i);

        }



        // 'Zeichne' Text

        g.setColor(Color.black);

        g.setFont(textFont);

        g.drawString ("Bahn: "+itsBahnverwalter.currentBahnIndex(), 40, 120);

        g.drawString ("Par: ", 40, 140);

        g.drawString ("Shot: 1", 40, 160);

        g.drawString ("Strength", 40, posYStrength +20);





        // zeichne Bezel ausserhalb der Zeichenfläche, use 3D method

        g.setColor (colorWindow);

        for (int i = 0; i < kBezelWidth; i++)

        {

            g.draw3DRect (150-i-1, 15-i-1, size().width -165+2*(i+1), size().height -30+2*(i+1), false);

        }



        // teste auf Exception und zeichne entsprechende Zeichenfläche

        if (itsBahnverwalter.eineBahnHatException())

            drawExceptionField(g, 150, 15, size().width -15-150+1, size().height -15-15+1);

        else

            drawPlayField(g, 150, 15, size().width -15-150+1, size().height -15-15+1);

    };





    private void drawExceptionField(Graphics g, int fieldPosX, int fieldPosY, int fieldWidth, int fieldHeight)

    {

        // for combining Fontstyle, just add the 'constants'

        Font f = new Font("TimesRoman", Font.BOLD + Font.ITALIC, 14);

        FontMetrics metrics = getFontMetrics(f);



        g.setColor(colorException);

        g.fillRect(fieldPosX, fieldPosY, fieldWidth, fieldHeight);



        // use predefined red color

        g.setColor(Color.red);

        g.setFont(f);

        int posX = 10;

        int posY = 25 + metrics.getHeight();

        if (itsBahnverwalter.bahnException() != null) {

            for (int i=0; i<itsBahnverwalter.bahnException().length; i++) {

                g.drawString (itsBahnverwalter.bahnException()[i], fieldPosX + posX, fieldPosY + posY);

                posY += metrics.getHeight();

            };

        };



    }



    private void drawPlayField(Graphics g, int fieldPosX, int fieldPosY, int fieldWidth, int fieldHeight)

    {

        g.setColor(colorPlayfield);

        g.fillRect(fieldPosX, fieldPosY, fieldWidth, fieldHeight);



        if (itsBahnverwalter.currentBahn() != null)

            itsBahnverwalter.currentBahn().draw (g, fieldPosX, fieldPosY);

        itsBahnverwalter.itsBall.repaint();

        itsBahnverwalter.itsBall.drawArrow(g);

    }





    public void myButtonPushed (MyButton aPressedButton) {

        // Irgend ein Button wurde gedrückt

        // suche welcher

        // teste Reset Button

        if (aPressedButton == itsButtonReset) {

            System.out.println("Reset!!");

            itsBahnverwalter.resetCurrentBahn();

            //zeichne die gewählte Bahn

            repaint ();

        }

        // teste Next Button

        else if (aPressedButton == itsButtonNext) {

            System.out.println("Next!!");

            itsBahnverwalter.selectNextBahn();

            itsBahnverwalter.resetCurrentBahn();

            System.out.println("Neue Bahn: "+ itsBahnverwalter.currentBahnIndex());

            //zeichne die gewählte Bahn

            repaint ();

        }

        // teste Previous Button

        else if (aPressedButton == itsButtonPrev) {

            System.out.println("Previous!!");

            itsBahnverwalter.selectPrevBahn();

            itsBahnverwalter.resetCurrentBahn();

            System.out.println("Neue Bahn: "+ itsBahnverwalter.currentBahnIndex());

            //zeichne die gewählte Bahn

            repaint ();

        }

        // teste Shot Button

        else if (aPressedButton == itsButtonShot) {

            System.out.println("Schuss!!, Stärke: " + (100-itsStrength.getValue()));

            itsBahnverwalter.itsBall.setSpeedPercent(100-itsStrength.getValue());

            itsBahnverwalter.itsBall.start();

        };



    };



    public boolean mouseMove(Event evt, int x, int y) {

        if (itsBahnverwalter.itsBall.newDirectionSet(x,y)) {

            this.repaint(itsBahnverwalter.itsBall.getPos().x-30,itsBahnverwalter.itsBall.getPos().y-30,60,60);

        };

       	return false;

    }



}