/* "Lizards.java" */
/* <c> 1997 Joe Rosen */
/* java applet, "Giant Human Head Eating LIZARDS" */

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

// "Credits" class
class Credits {

 // vars

 /* Credits strings' font */
 Font        credits_Font;
 /* Credits text font metrics (used to retrieve Credits string width) */
 FontMetrics credits_FontMetrics;
 /* Credits text string */
 String      credits_String;
 /* Credits text string width */
 int         creditsText_Width;
 /* Credits text string left coord */
 int         creditsText_LeftCoord;

 // methods

 // constructer
 Credits(Graphics g) {
  /* Credits text strings' font */
  credits_Font = new Font("Helvetica", Font.BOLD, 24);
  /* get Credits text font metrics (used to retrieve Credits string width) */
  credits_FontMetrics = g.getFontMetrics(credits_Font);
  /* Credits string */
  credits_String =
   "GIANT HUMAN HEAD EATING LIZARDS -- An Electromics <tm> Movie by Joe Rosen";
  /* get Credits text string width */
  creditsText_Width = credits_FontMetrics.stringWidth(credits_String);
  /* init Credits text string left coord (left=138) */
  creditsText_LeftCoord = 138 + 4;
 }

 // methods

 // scroll credits
 public void ScrollCredits(Graphics g) {

  /* Credits text crop */
  Graphics clip_g;

  /* frame Credits text box (138W X 31H) */
  g.setColor(Color.black);
  g.drawRect(7,268+13,137+4,31);

  /* scroll/reset Credits text string left (left=14) */
  if (creditsText_LeftCoord > -(creditsText_Width))
   creditsText_LeftCoord = creditsText_LeftCoord - 2;
  else
   creditsText_LeftCoord = 138 + 4;

  /* create clip rect */
  clip_g = g.create();
  clip_g.clipRect(14,275 + 13,123 + 4,23);

  /* write Credits text string */
  clip_g.setColor(Color.black);
  clip_g.setFont(credits_Font);
  clip_g.drawString(credits_String,creditsText_LeftCoord,293 + 13);

  /* dispose clip rect */
  clip_g.dispose();

 } // end "ScrollCredits()"

}
// end "Credits" class

// "Lizards" applet class
public class Lizards extends java.applet.Applet implements Runnable {

 /* program constants */

 /* applet canvas size */
 final int  APPLET_WDTH = 480;
 final int  APPLET_HGHT = 320;

 /* title width and height */
 final int  TITLE_WDTH = 196;
 final int  TITLE_HGHT = 226;

 /* variables */

 /* images */
 /* title gif ("Lizards") */
 Image         lizards;
 /* titles gif ("Giant" "Human" "Head" "Eating") */
 Image         title_1_4;
 /* "See:" gif */
 Image         see;
 /* scream button gif */
 Image         scream_btn;
 /* bite button gif */
 Image         bite_btn;
 /* bleed button gif */
 Image         bleed_btn;
 /* joe's body gif */
 Image         joe_body;
 /* joe's head (mouths) gif */
 Image         joe_mouths;
 /* joe's head (bleeding necks) gif */
 Image         joe_bleeds;
 /* lizard bodies gif */
 Image         lizard_bodies;
 /* lizard tail (#1) gif */
 Image         lizard_tail_1;
 /* lizard tail (#2) gif */
 Image         lizard_tail_2;
 /* lizard tongues gif */
 Image         lizard_tongues;

 /* Lizards, MediaTracker */
 MediaTracker  lizards_MediaTracker;

 /* Lizards, offscreen graphics context (composite buffer) */
 Image         offLizards_Image;
 Graphics      offLizards_Graphics;

 /* title index */
 int           title_Idx;
 /* title delay */
 long          title_Delay;

 /* scream_btn offset */
 int           scream_btn_offset;
 /* bite_btn offset */
 int           bite_btn_offset;
 /* bleed_btn offset */
 int           bleed_btn_offset;

 /* scream_btn flag */
 boolean       scream_btn_flg;
 /* bite_btn flag */
 boolean       bite_btn_flg;
 /* bleed_btn flag */
 boolean       bleed_btn_flg;

 /* scream anim index */
 int           scream_Idx; // 0= frown mouth/1= smile mouth
 /* bleed anim index */
 int           bleed_Idx; // 0= frame 1/1= frame 2
 /* lizard body (eye/tongue) anim index */
 int           lizard_body_Idx; // 0= frame 1/1= frame 2
 /* lizard body (eye/tongue) anim delay */
 long          lizard_body_delay;
 /* lizard (tail wag) anim index */
 int           lizard_tail_Idx; // 0= frame 1/1= frame 2
 /* lizard (tail wag) anim delay */
 long          lizard_tail_delay;
 /* lizard (tongue) anim index */
 int           lizard_tongue_Idx; // 0= short tongue/1= long tongue

 /* Credits object */
 Credits       theCredits;
 /* Credits visible flag (flip-flop visibility) */
 boolean       theCredits_flag; // true= visible/false= invisible

 /* Lizards, animation thread */	
 Thread        animation_Thread = null;


 /* methods invoked by Java */

 /* "init()"
  * initialize the applet */
 public void init()
 {

  // initialization loop counter
  int  lpCnt;

  /* resize canvas */
  resize(APPLET_WDTH,APPLET_HGHT);

  /* create offscreen graphics context, Lizards composite buffer */
  offLizards_Image = createImage(APPLET_WDTH,APPLET_HGHT);
  offLizards_Graphics = offLizards_Image.getGraphics();

  /* retrieve .gif images */
  /* title ("Lizards") */
  lizards = getImage(getCodeBase(),"images/lizards.gif");
  /* titles ("Giant" "Human" "Head" "Eating") */
  title_1_4 = getImage(getCodeBase(),"images/title_1_4.gif");
  /* "See:" */
  see = getImage(getCodeBase(),"images/see.gif");
  /* scream button */
  scream_btn = getImage(getCodeBase(),"images/scream_btn.gif");
  /* bite button */
  bite_btn = getImage(getCodeBase(),"images/bite_btn.gif");
  /* bleed button */
  bleed_btn = getImage(getCodeBase(),"images/bleed_btn.gif");
  /* joe's body */
  joe_body = getImage(getCodeBase(),"images/joe_body.gif");
  /* joe's head (mouths) */
  joe_mouths = getImage(getCodeBase(),"images/joe_mouths.gif");
  /* joe's head (bleeding necks) */
  joe_bleeds = getImage(getCodeBase(),"images/joe_bleeds.gif");
  /* lizard bodies */
  lizard_bodies = getImage(getCodeBase(),"images/lizard_bodies.gif");
  /* lizard tail (#1) */
  lizard_tail_1 = getImage(getCodeBase(),"images/lizard_tail_1.gif");
  /* lizard tail (#2) */
  lizard_tail_2 = getImage(getCodeBase(),"images/lizard_tail_2.gif");
  /* tongues */
  lizard_tongues = getImage(getCodeBase(),"images/lizard_tongues.gif");

  /* init Lizards MediaTracker */
  lizards_MediaTracker = new MediaTracker(this);
  lizards_MediaTracker.addImage(lizards,0);
  lizards_MediaTracker.addImage(title_1_4,1);
  lizards_MediaTracker.addImage(see,2);
  lizards_MediaTracker.addImage(scream_btn,3);
  lizards_MediaTracker.addImage(bite_btn,4);
  lizards_MediaTracker.addImage(bleed_btn,5);
  lizards_MediaTracker.addImage(joe_body,6);
  lizards_MediaTracker.addImage(joe_mouths,7);
  lizards_MediaTracker.addImage(joe_bleeds,8);
  lizards_MediaTracker.addImage(lizard_bodies,9);
  lizards_MediaTracker.addImage(lizard_tail_1,10);
  lizards_MediaTracker.addImage(lizard_tail_2,11);
  lizards_MediaTracker.addImage(lizard_tongues,12);

  /* init title index */
  title_Idx = 0;
  /* init title delay (.75 sec delay) */
  title_Delay = System.currentTimeMillis();

  /* init scream btn offset */
  scream_btn_offset = 0;
  /* init bite btn offset */
  bite_btn_offset = 0;
  /* init bleed btn offset */
  bleed_btn_offset = 0;

  /* init scream_btn flag */
  scream_btn_flg = true;
  /* init bite_btn flag */
  bite_btn_flg = false;
  /* init bleed_btn flag */
  bleed_btn_flg = false;

  /* init scream anim index */
  scream_Idx = 0; // initially 0 (0= frown mouth/1= smile mouth)
  /* init bleed anim index */
  bleed_Idx = 0; // initially 0 (0= frame 1/1= frame 2)
  /* init lizard body (eye/tongue) anim index */
  lizard_body_Idx = 0; // 0= frame 1/1= frame 2
  /* init lizard (tail wag) anim index */
  lizard_tail_Idx = 0; // 0= frame 1/1= frame 2

  /* lizard body (eye/tongue) anim delay (change every .50 to 1.5 seconds) */
  lizard_body_delay =
   System.currentTimeMillis() + (((long) (Math.random() * 1000)) + 500);
  /* lizard (tail wag) anim delay (change every .50 to 1.5 seconds) */
  lizard_tail_delay =
   System.currentTimeMillis() + (((long) (Math.random() * 1000)) + 500);

  /* instantiate Credits object */
  theCredits = new Credits(offLizards_Graphics);
  /* init Credits visible flag (flip-flop visibility; true= visible/false= invisible) */
  theCredits_flag = false; // initially invisible (false= invisible)

 } /* end method "init" */


 /* "start()"
  * called when the applet becomes visible on screen */
 public void start()
 {

  /* start animator thread */
  animation_Thread = new Thread(this);
  animation_Thread.start();

 } /* end method "start" */


 /* "run()"
  * called (repeatedly) by the Thread created in "start()" */
 public void run()
 {

  /* update animator thread */
  while (Thread.currentThread() == animation_Thread) {

   /* repaint (update) the screen */
   repaint();

   /* begin: thread delay (125 milliseconds) */
   try {
    Thread.sleep(125);
   } catch (InterruptedException e) {
      break;
     } /* end: thread delay */

  } /* end "while (Thread.currentThread() == animation_Thread)" */

 } /* end method "run" */


 /* "stop()"
  * called when the applet is no longer visible on screen */
 public void stop()
 {

  /* stop animator thread */
  if (animation_Thread != null)
   animation_Thread.stop();

  animation_Thread = null;

 } /* end method "stop" */


 /* "destroy()"
  * called just before the browser exits */
 public void destroy() {

  /* dispose offscreen graphics context, Lizards composite buffer */
  offLizards_Graphics.dispose(); offLizards_Graphics = null;

 } /* end method "destroy" */


 /* "update()"
  * update the screen */
 public void update(Graphics  g)
 {

  /* (intercepting "update" avoids background erase) */
  /* call "paint" */
  paint(g);

 } /* end method "update" */


 /* "mouseDown()"
  * called when the mouse button is down */
 public boolean mouseDown(Event evt, int x, int y) {
  
  // begin: scream btn
  if ( ((x >= 390) && (x <= (390 + 83))) &&
       ((y >= 42) && (y <= (42 + 58))) ) {
   // toggle
   if (scream_btn_flg == false)
    scream_btn_flg = true;
   if (bite_btn_flg == true)
    bite_btn_flg = false;
   else if (bleed_btn_flg == true)
    bleed_btn_flg = false;
   /* force repaint */
   repaint();
  }
  // end: scream btn
  
  // begin: bite btn
  else if ( ((x >= 390) && (x <= (390 + 83))) &&
            ((y >= 149) && (y <= (149 + 58))) ) {
   // toggle
   if (bite_btn_flg == false) {
    bite_btn_flg = true;
    /* lizard (tongue) anim index (0= short tongue/1= long tongue) */
    lizard_tongue_Idx = 0; // initially 0= short tongue
   }
   if (scream_btn_flg == true)
    scream_btn_flg = false;
   else if (bleed_btn_flg == true)
    bleed_btn_flg = false;
   /* force repaint */
   repaint();
  }
  // end: bite btn
  
  // begin: bleed btn
  else if ( ((x >= 390) && (x <= (390 + 83))) &&
            ((y >= 255) && (y <= (255 + 58))) ) {
   // toggle
   if (bleed_btn_flg == false)
    bleed_btn_flg = true;
   if (scream_btn_flg == true)
    scream_btn_flg = false;
   else if (bite_btn_flg == true)
    bite_btn_flg = false;
   /* force repaint */
   /* force repaint */
   repaint();
  }
  // end: bleed btn

  //  Credits visible flag (flip-flop visibility; true= visible/false= invisible)
  else if (theCredits_flag == true)
   theCredits_flag = false;
  else
   theCredits_flag = true;
   

  return true;

 } /* end method "mouseDown" */


 /* "paint()"
  * paint the screen */
 public void paint(Graphics  g)
 {

  /* font */
  Font  txt_Font;

  /* image crop */
  Graphics clip_g;

  /* fill buffer with white paint */
  offLizards_Graphics.setColor(Color.white);
  offLizards_Graphics.fillRect(0,0,APPLET_WDTH,APPLET_HGHT);

  /* wait for images to laod before drawing */
  if (lizards_MediaTracker.checkAll(true) == true) {

   /* draw title ("Lizards") */
   offLizards_Graphics.drawImage(lizards,0,0,this);

   /* draw titles ("Giant" "Human" "Head" "Eating") */
   if (title_Idx < 4) {
    clip_g = offLizards_Graphics.create();
    clip_g.clipRect(0,0,115,106);
    clip_g.drawImage(title_1_4,(title_Idx * -115),0,this);
    clip_g.dispose();
   }

   /* next title (Giant, Human, Head, Eating, BLANK) every .75 secs */
   if (System.currentTimeMillis() >= title_Delay) {
    title_Delay = System.currentTimeMillis() + 750;
    if (title_Idx < 4)
     title_Idx++;
    else
     title_Idx = 0;
   } /* end "title" */

   /* draw "See:" */
   offLizards_Graphics.drawImage(see,387,7,this);
   offLizards_Graphics.drawImage(see,387,114,this);
   offLizards_Graphics.drawImage(see,387,220,this);
   
   /* scream btn */
   clip_g = offLizards_Graphics.create();
   clip_g.clipRect(390,42,83,58);
   clip_g.drawImage(scream_btn,390,(42 - scream_btn_offset),this);
   clip_g.dispose();
   /* inc/reset scream btn offset */
   if (scream_btn_offset < (57 * 3))
    scream_btn_offset = scream_btn_offset + 57;
   else
    scream_btn_offset = 0;
   
   /* bite btn */
   clip_g = offLizards_Graphics.create();
   clip_g.clipRect(390,149,83,58);
   clip_g.drawImage(bite_btn,390,(149 - bite_btn_offset),this);
   clip_g.dispose();
   /* inc/reset bite btn offset */
   if (bite_btn_offset < (57 * 3))
    bite_btn_offset = scream_btn_offset + 57;
   else
    bite_btn_offset = 0;
   
   /* bleed btn */
   clip_g = offLizards_Graphics.create();
   clip_g.clipRect(390,255,83,58);
   clip_g.drawImage(bleed_btn,390,(255 - bleed_btn_offset),this);
   clip_g.dispose();
   /* inc/reset bleed btn offset */
   if (scream_btn_offset < (57 * 3))
    bleed_btn_offset = bleed_btn_offset + 57;
   else
    bleed_btn_offset = 0;

   /* hilite btns */
   offLizards_Graphics.setColor(Color.black);
   if (scream_btn_flg == true) {
    offLizards_Graphics.drawRect(388,40,86,61);
    offLizards_Graphics.drawRect(387,39,88,63);
   }
   else if (bite_btn_flg == true) {
    offLizards_Graphics.drawRect(388,147,86,61);
    offLizards_Graphics.drawRect(387,146,88,63);
   }
   else if (bleed_btn_flg == true) {
    offLizards_Graphics.drawRect(388,253,86,61);
    offLizards_Graphics.drawRect(387,252,88,63);
   }

   /* draw joe's body */
   offLizards_Graphics.drawImage(joe_body,259,80,this);

   /* begin: draw joe's head */
   /* create temp clip rect */
   clip_g = offLizards_Graphics.create();
   clip_g.clipRect(282,11,64,78);
   /* scream */
   if (scream_btn_flg == true)
    /* flip-flop scream anim index */
    if (scream_Idx == 0) {
     clip_g.drawImage(joe_mouths,282,11,this);
     scream_Idx = 1;
    }
    else {
     clip_g.drawImage(joe_mouths,282 - 64,11,this);
     scream_Idx = 0;
    }
   /* bite */
   else if (bite_btn_flg == true)
    clip_g.drawImage(joe_mouths,282 - 64,11,this);
   /* bleed */
   else if (bleed_btn_flg == true)
    /* flip-flop bleed anim index */
    if (bleed_Idx == 0) {
     clip_g.drawImage(joe_bleeds,282,11,this);
     bleed_Idx = 1;
    }
    else {
     clip_g.drawImage(joe_bleeds,282 - 64,11,this);
     bleed_Idx = 0;
    }
   /* we're done, destroy temp clip rect */
   clip_g.dispose();
   /* end: draw joe's head */

   /* draw lizard body */
   /* create temp clip rect */
   clip_g = offLizards_Graphics.create();
   clip_g.clipRect(117,59,141,156);
   if (lizard_body_Idx == 0) 
    clip_g.drawImage(lizard_bodies,117,59,this);
   else if (lizard_body_Idx == 1) 
    clip_g.drawImage(lizard_bodies,(117 - 141),59,this);
   /* we're done, destroy temp clip rect */
   clip_g.dispose();
   /* lizard body (eye/tongue) anim index (0= frame 1/1= frame 2) */
   if (lizard_body_delay <= System.currentTimeMillis()) {
    if (lizard_body_Idx == 0) 
     lizard_body_Idx = 1;
    else if (lizard_body_Idx == 1)
     lizard_body_Idx = 0;
    /* re-init lizard body (eye/tongue) anim delay (change every .50 to 1.5 seconds) */
    lizard_body_delay =
     System.currentTimeMillis() + (((long) (Math.random() * 1000)) + 500);
   }

   /* draw lizard tail */
   if (lizard_tail_Idx == 0) 
    offLizards_Graphics.drawImage(lizard_tail_1,126,215,this);
   else if (lizard_tail_Idx == 1) 
    offLizards_Graphics.drawImage(lizard_tail_2,8,215,this);
   /* lizard (tail wag) anim index (0= frame 1/1= frame 2) */
   if (lizard_tail_delay <= System.currentTimeMillis()) {
    if (lizard_tail_Idx == 0) 
     lizard_tail_Idx = 1;
    else if (lizard_tail_Idx == 1)
     lizard_tail_Idx = 0;
    /* re-init lizard (tail wag) anim delay (change every .50 to 1.5 seconds) */
    lizard_tail_delay =
     System.currentTimeMillis() + (((long) (Math.random() * 1000)) + 500);
   }

   /* bite */
   if (bite_btn_flg == true) {
    /* create temp clip rect */
    clip_g = offLizards_Graphics.create();
    clip_g.clipRect(188,8,174,106);
    /* draw lizard tongue (flip-flop short and long tongues) */
    if (lizard_tongue_Idx == 0) {
     clip_g.drawImage(lizard_tongues,188,8,this);
     lizard_tongue_Idx = 1;
    }
    else {
     clip_g.drawImage(lizard_tongues,(188 - 174),8,this);
     lizard_tongue_Idx = 0;
    }
    /* we're done, destroy temp clip rect */
    clip_g.dispose();
   }

   // scroll credits (theCredits_flag: true= visible/false= invisible)
   if (theCredits_flag == true)
    theCredits.ScrollCredits(offLizards_Graphics);

  } // end "if (lizards_MediaTracker.checkAll(true) == true)"

  /* begin: write text message, "Loading Images..." */
  else {
   /* text font */
   txt_Font = new Font("Helvetica", Font.PLAIN, 9);
   /* set text string font */
   offLizards_Graphics.setFont(txt_Font);
   /* set text string color */
   offLizards_Graphics.setColor(Color.black);
   /* write/draw text message */
   offLizards_Graphics.drawString("Loading Images...",25,25);
  }
  /* end: write text message, "Loading Images..." */

  /* frame entire buffer with black color */
  offLizards_Graphics.setColor(Color.black);
  offLizards_Graphics.drawRect(0,0,APPLET_WDTH - 1,APPLET_HGHT - 1);

  /* blast buffer to screen */
  g.drawImage(offLizards_Image,0,0,this);

 } /* end method "paint" */

} /* end class "Lizards" */

/* end file "Lizards.java" */