package elte.java2_utikalauz5.j2me;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.*;
import java.io.*;

/**
Animációs midlet.

@link.forrásfájl {@docRoot}/../data/j2me/src SpriteMidlet.java
@link.letöltés {@docRoot}/../data/j2me SpriteMidlet.jar
@link.letöltés {@docRoot}/../data/j2me SpriteMidlet.jad
@since Java 2 Útikalauz programozóknak 5.0
*/
public class SpriteMidlet extends MIDlet {

    Image[] emberKepek = new Image[2];
    Image[] korKepek = new Image[1];
    Sprite emberSprite;
    Sprite korSprite;
    Display display;
    Canvas canvas;
    Timer timer = new Timer();

    class SpriteMidletCanvas extends Canvas {
        public void paint(Graphics g) {
            g.setColor(0xff0000);
            g.fillRect(0,0, getWidth(), getHeight());
            emberSprite.paint(g);
            korSprite.paint(g);
        }
    }

    class SpriteIdozito extends TimerTask {
        public void run() {
            emberSprite.lep();
            korSprite.lep();
            canvas.repaint();
        }
    }

    class Sprite {

        private Image[] kepek;
        private int aktFazis;
        private int posX, posY;
        private int sebessegX, sebessegY;

        public Sprite(Image[] kepek, int posX, int posY, int sebessegX, int sebessegY ) {
            this.kepek = kepek;
            this.posX = posX;
            this.posY = posY;
            this.sebessegX = sebessegX;
            this.sebessegY = sebessegY;
        }

        public void paint(Graphics g) {
            g.drawImage(kepek[aktFazis], posX, posY, g.TOP|g.LEFT);
        }

        public void lep() {
            aktFazis = (aktFazis + 1) % kepek.length;
            posX += sebessegX;
            posY += sebessegY;
        }
    }

    public SpriteMidlet() {
        try {
            emberKepek[0] = Image.createImage("/kepek/ember1.png");
            emberKepek[1] = Image.createImage("/kepek/ember2.png");
            korKepek[0] = Image.createImage("/kepek/kor.png");
        } catch( IOException e ) {
            System.out.println("Hiba:"+e);
        }
        emberSprite = new Sprite(emberKepek, 20, 20, 0, 0);
        korSprite = new Sprite(korKepek, 0, 0, 1, 1);
        canvas = new SpriteMidletCanvas();
        timer.scheduleAtFixedRate(new SpriteIdozito(), 1000, 200);
    }

    public void startApp() {
        if( display == null ) {
            display = Display.getDisplay(this);
        }
        display.setCurrent(canvas);
    }

    public void pauseApp() {
    }

    public void destroyApp(boolean unconditional) {
    }
}