import java.applet.*;
import java.awt.*;

public class CS217 extends java.applet.Applet implements Runnable {
  Thread killme = null;
  boolean threadSuspended = false;
  int delay;                         // how much tha anim. thread sleeps
  Dimension dim;                     // the fixed size of the applet
  String imagename = "duke";         // image to be used for the player
  String imagedir = "Image";   // where image located
  float deltaTime = 0.2f;            // time step
  Image imgs[];                      // allow for a series of images to use
  int nimgs = 1;                     // here we use only one
  
  Image offscreenImage;              // very helpful in avoiding blinking
  Graphics offscreenGfx;

  Player duke;                // the one who will catch the ball

  public void init() {
    String temp;
    temp = getParameter("delay");
    try {
      delay = Integer.parseInt(temp);
    } catch (NumberFormatException e) {
      delay = 100;
    }

   imgs = new Image[nimgs];
   for ( int i=0; i < nimgs; i++ ) 
     imgs[i] = getImage(getCodeBase(),imagedir + "/" + imagename + 
			 (i+1) + ".gif");
   // the series of images assumed to be named duke1.gif duke2.gif ...

   if (size().width < 200 || size().height < 200)
     resize(300,400);
   dim = size();            // the applet area will be of fixed size

   duke = new Player(this);

   // setup the graphics buffering
   offscreenImage = createImage(dim.width,dim.height);
   offscreenGfx = offscreenImage.getGraphics();
  }

  public void update(Graphics g){
      paint(g);
  }    

  void DrawBg(Graphics g){
    g.setColor(Color.white);                    /* background is white */
    g.fillRect(0,0, dim.width, dim.height);
    g.setColor(Color.black);                    /* border is black */
    g.drawRect(0, 0, dim.width-1, dim.height-1); 
  }	

  public void paint(Graphics g) {
    // first, draw everything off screen
    DrawBg(offscreenGfx);
    duke.paint(offscreenGfx);
    // then dump the result for user's enjoyment
    g.drawImage(offscreenImage, 0, 0, this);
    }

  public void start() {
    if (killme == null) {
      killme = new Thread(this);
      killme.start();
    }
  }

  public void stop() {
    killme = null;
  }

  public void run() {
    //Just to be nice, lower this thread's priority
    Thread.currentThread().setPriority(Thread.MIN_PRIORITY);

    while (killme != null) {
      advance();
      repaint();

      try {
	killme.sleep(delay);
      } catch (InterruptedException e) {
	System.err.println("ERROR in run()");
	break;
      }
    }
    killme = null;
  }

  public void advance() {
    duke.advance(deltaTime);     // the Player class also takes care of ball
  }

  public void toggleAnim() {    // Animations can be annoying!
    if (threadSuspended) {
      killme.resume();
    } else {
      killme.suspend();
    }
    threadSuspended = !threadSuspended;
  }
  
  public boolean keyDown(Event e, int key) {
  if (threadSuspended)
    return true;
  if ( key == ' ' )
    duke.jump();
  if ( key == 'j' || key == 'J')
    duke.moveinX(-5);
  if ( key == 'k' || key == 'K' )
    duke.moveinX(5);
  return true;
}

  public boolean mouseDown(Event evt, int x, int y) {
    toggleAnim();
    return true;
  }
}