gamecanvas2.java

Basic Game Source for J2me learner

import javax.microedition.lcdui.*;

public class GameCanvas2 extends Canvas implements Runnable {
  Thread myThread;
  GameMIDlet parentMIDlet;
  Image[] eagleImgs;
  int imgIndex, posX=0, posY=0;

  public GameCanvas2(GameMIDlet parentMIDlet){
    this.parentMIDlet = parentMIDlet;
    myThread  = new Thread(this);
    initImage();
    myThread.start();
  }

  public void initImage(){
    eagleImgs = new Image[3];
    try{
      for (int i=0; i<eagleImgs.length; i++){
        eagleImgs[i] = Image.createImage("/eagle00" + i + ".png");
      }
    }catch(Exception e){
    }
  }

  public void clearScreen(Graphics g){
    g.setColor(220, 220, 220);
    g.fillRect(0, 0, getWidth(), getHeight());
  }

  public void paint(Graphics g) {
    clearScreen(g);
    posX = getWidth()/2;
    posY = getHeight()/2;
    g.drawImage( eagleImgs[imgIndex], posX, posY, g.VCENTER|g.HCENTER );
  }

  public void run() {
    while (parentMIDlet.running) {
      if (imgIndex ==2 )
        imgIndex = 0;
      else
        imgIndex++;
      System.out.println("imgIndex = " + imgIndex);
      repaint();

      try{
        Thread.sleep(500);   // 500 mimi second
      }catch (InterruptedException e){
      }

    }  // end-of wile-loop
  }  // end-of run()

}