import java.awt.*;

public class BallFrame extends Frame implements MovableObj {
    int x = 0, y = 0;
    int sx = 15, sy = 15;
    int ux, uy;
    Image ball, backgr;
    String text;

    public Image loadImage(String imagePath, MediaTracker mt, int imageID) {
        Image img = getToolkit().getImage(imagePath);
        mt.addImage(img, imageID);
        try {
            mt.waitForID(imageID);
        }
        catch (Exception e) {}
        return img;
    }

    public BallFrame(String name) {
        super(name);
        setSize(FRAME_WIDTH, FRAME_HEIGHT);			// Fenstergröße setzen
        setFont(new Font("TimesRoman", Font.PLAIN, 14));	// Font für Textausgaben
        MediaTracker tracker = new MediaTracker(this);		// überwacht das Laden von Bildern
        ball = loadImage("images/logo.gif", tracker, 0);	// Grafik mit Mediatracker laden
        sx = ball.getWidth(this);				// Größe des Images merken
        sy = ball.getHeight(this);
    }

    public void moveAbs(int x, int y) {
        this.x = x;
        this.y = y;
        text = null;
        update(this.getGraphics());
    }

    public void moveRel(int dx, int dy) {
        this.x += dx;
        this.y += dy;
        text = null;
        update(this.getGraphics());
    }

    public void textOut(String text) {
        this.text = text;
        update(this.getGraphics());
    }

    public void paint(Graphics g) {
        Dimension d = this.getSize();			// Größe des Fensters ermitteln
        ux = d.width / 2;				// Mittelpunkt als Bezugspunkt setzen
        uy = d.height / 2;
        showText(g, d);					// Textinformationen ausgeben
        showObj(g);					// Objekt überlagernd zeichnen
    }

    public void showText(Graphics g, Dimension d) {
        g.setColor(this.getForeground());
        g.drawString("U: (" + ux + ", " + uy + "); Pos: (" +
            x + ", " + y + ")", 10, d.height-10);
        if (text != null) g.drawString(text, 10, 40);	// Text ausgeben
    }

    public void showObj(Graphics g) {
        g.translate(ux-sx/2, uy-sy/2);			// Koordinatenursprung setzen
        if (ball != null) g.drawImage(ball, x, -y, this);
        else g.fillOval(x, y, sx, sy);
        g.translate(0, 0);
    }
}